Buy 45 Steel for CNC Work | Plate, Block, Round Bar Supply

Machining suggestion: rough machining rotational speed 100–150m/min, fine machining 180m/min, feed 0.15–0.3mm/r; cutting before quench and temper treatment (quench 840℃ + temper 560℃), improve wear resistance and dimension stability.

Plate

Parameters & Uses

Machine tool clamping 12 mm thick hard alloy cutter head crashes toward 45 steel plate, main shaft's load meter instantly soars to 35%. Cutter head one minute runs 2500 circles, towards down digs out 3 mm thick metal slice, flying out iron chips all turned into dark blue. Iron chips emitting blue explains metal friction zone's temperature is fast approaching 500 degrees Celsius. At this state under, iron chips broken off length maintains at 15 to 25 mm between, groove inside's waste slag discharges very smoothly.

Want to suppress 500 degrees Celsius high temperature, water-soluble cutting fluid's concentration must strictly mix to 8% to 10% interval. High pressure water pump pushing 20 bar pressure, takes cooling water dead dead smashes at high speed rotating blade upon, prevent surface's coating by high temperature burned melted falling off. Continuously cut 40 minutes stop machine tool, take micrometer go caliper just planed flat surface, heat expand cold shrink will let dimension extra come out 0.02 to 0.04 mm deviation.

Change on 8.5 mm twist drill bit prepare to hit hole, steel plate's resistance compared to 6061 aluminum alloy big much. Rotational speed forcedly drops to per minute 800 revolutions, drill bit every towards inside pricks 3 mm then must pull out discharge one time iron chips. Hole hit finished needs to inside lathe out M10 thread, wire tap walk knife speed is strictly stuck dead at per minute 5 to 8 meters between.

· Coating alloy cutter head: per minute cutting walk distance controlled at 100 to 150 meters

· Normal high speed steel drill bit: per minute walk distance pressed down to 20 to 30 meters

· Lathe scrape outer circle: main shaft turns one circle eat knife 0.2 to 0.4 mm

· Surface fine repair polish: every time only scrape off 0.1 to 0.2 mm thickness

Just bought come 45 steel plate anti-pull strength stops at 600 megapascal, original form taken go use extremely easy wear tear. Worker takes plate throws into electric furnace burns to 840 degrees Celsius, endures 90 minutes again fiercely scoops out throws into room temperature salt water inside. Receive cold shrink plate's Rockwell hardness will soar to HRC 55, take steel file go rub surface all will slip emit fire stars.

Hardness pulled full steel plate becomes follow glass same brittle, casually take heavy object smash a bit edge then will collapse off one piece. Quench fire finish two hours within hurry take it stuff into 600 degrees Celsius furnace inside again slowly roast 3 hours. Anew take out measure, hardness dropped to HRC 22 to 30 between, anti-impact data climbed back 39 joules, plate becomes both wear-resistant and not easy break.

This kind roasted pass two times thick plate often by taken go make injection molding machine's mold base. One piece length width each 50 centimeters, thickness 60 mm plate, installed into machine needs hard resist 250 tons instant squeeze press force. Plate inside also drilled diameter 10 to 12 mm cold water pipe line, pipe mouth lathe on 1/4 inch thread, connect on 8 bar pressure water also leaks not out one drop come.

Several tens tons heavy large type lathe also takes 60 mm thick 45 steel plate act as cushion foot base. Weight reaching 4 tons cast iron machine body, relies on bottom's 8 pieces M20 thick high strength screws nailed dead at cushion plate upon. Cushion plate assemble before all at large grinder upon back forth seek flat pass, 1 meter long one segment distance inside, high low undulating error by forcedly pressed at 0.015 mm within.

· 10 to 20 mm thick: make motor's flange plate or light type conveyor belt bracket

· 30 to 50 mm thick: make medium type gear box's side edge baffle plate

· 60 to 100 mm thick: cushioned at heavy type hydraulic press's below act as receive force base

· Exceed 100 mm: used at heavy type truck's axle big connect piece upon

Take two pieces 30 mm thick plates piece at together weld, joint seam's edge cold down time specially easy open crack. Take weld gun before must first use oxygen acetylene fire take joint seam place roast to 150 to 250 degrees Celsius preheat. Change on J507 low hydrogen weld rod, electric weld machine's current twist to 160 to 200 amperes. First layer weld seam's depth dead dead controlled at 4 to 5 mm, prevent current too big take plate burn through.

Wait weld seam cool to 100 degrees Celsius around, whole part again must stuff into furnace inside use 600 degrees Celsius roast one circle remove stress. Quality inspect personnel holding ultrasonic flaw detector at plate upon slides, search inside has not has exceed 2 mm empty hole or miscellaneous slag.

Deformation & Dimension

Take one piece length 600 mm, width 400 mm, thickness 30 mm 45 steel plate flat placed at mill machine table upon. Machine tool not yet start, steel plate internal already been steel factory roll time sealed stored high reach 200 megapascal residual stress. Mill knife sticking surface shovels off 3 mm thick oxide skin, originally tight stretched force field instantly breaks. Whole piece steel plate's four corners receive not control ground towards up warp, micrometer dial at diagonal line upon one pull, warp up height can reach 0.8 to 1.2 mm.

Operate worker toggles hydraulic flat mouth pliers' handle, towards steel plate side face presses on 15 megapascal clamp tight force. Steel plate by brute force pressed flat sticking at work table upon, flesh eye looks strictly no gap. Flying knife disc opens full 2000 revolutions horse power at above scrapes one layer skin, scrapes out like mirror same bright flat face.

Machine tool cut iron like mud time produce 500 degrees Celsius high temperature, follows iron chips and knife tool towards steel plate internal drills. Even if has 8% concentration cutting fluid not stop wash, steel plate overall temperature still will slowly climb rise to 45 degrees Celsius around. Take one piece 1000 mm long 45 steel plate calculate account, temperature every elevate high 10 degrees Celsius, its absolute length then will silently expand 0.11 mm.

Workshop room temperature maintains at 22 degrees Celsius, just down machine tool's steel plate carrying residual temperature. Measure personnel take caliper caliper out width is 399.98 mm, think drawing marked negative 0.02 mm tolerance reached standard. Take this piece plate placed at constant temperature rack upon air 24 hours, internal heat scatter exhaust thoroughly cool through. Take three coordinate measure machine's ruby probe bump one under, width shrink water became 399.93 mm, thoroughly become one piece scrap defective product.

Electric heat wire takes furnace chamber burns to 600 degrees Celsius, plate at inside red glowing ground stuff on 4 hours, internal tight stretched fiber by thoroughly roasted loose soft. Close off power source let it stay at furnace inside spend 12 hours slowly drop back room temperature, take out anew up one time machine tool. Micrometer dial again go measure, deformation amount dead dead stops at 0.01 mm within.

Old machine tool worker hand inside has one set specially target thick plate dimension control's cutting formula, machine tool walk knife parameters by divided into several absolute boundaries.

Only adjust machine tool parameters press not hold large area warp, deal with 45 steel plate most waste time work calls do turn face. One piece 50 mm thick plate wants cut to 40 mm, absolutely cannot one mouth breath at above dig off 10 mm. Mill knife first at front face thin thin shovel off 2.5 mm, loosen clamp take several tens kilograms iron block turn a body. Bottom's reverse face face up, machine tool sticking skin again shovel off 2.5 mm.

Come back turn face action wants repeat four to five times, every time turn body all at offset single side receive force cause bending, turn face sequence and leave down margin have strict rule.

· First time turn body: shovel off surface black skin, two sides each cut off total margin 60%

· Second time turn body: release deep layer stress, two sides each eat off total margin 30%

· Third time turn body: cooperate bottom cushion iron seek flat, cut remove remaining 9% leave act as fine repair

· Fourth time turn body: change on total new alloy blade, scrape exhaust last 0.1 mm

Marble platform's surface pass through human work scrape grind, one square meter area within high low difference only has 3 micrometers. Worker takes one handle 500 mm long knife mouth ruler sticks at steel plate surface, back behind hits one beam strong light. Vision line stares ruler and steel plate stick close that strip seam, even 0.01 mm's one thread leak light all escape not pass eye.

Measure these tiny undulating dimensions, workshop inside's measure tool precision all by pushed to micrometer level.

· Micrometer dial pointer: measure head press hold metal surface's force path control at 0.5 to 1.5 Newtons between

· Feeler gauge piece probe bottom: 0.02 mm thick steel piece specially probe base has not has hang empty gap

· Lever measure dial: ruby probe sweeps pass inner hole edge, reads out 0.005 mm round degree difference

· Three coordinate measure head: apply add 0.08 Newtons trigger force, point out three dimensional coordinate inside space deflect angle

At one piece long 800 mm plate upon drill two mutually distant 600 mm pin holes. Drill hole time's metal friction expand bump upon residual stress release, second day these two holes' distance will quiet quiet shrink short 0.05 mm. Assemble fitter takes two roots 10 mm thick standard cylinder pins towards inside smash, hole distance deflect this bit distance, second root pin uses 8 pounds iron hammer dead alive knock not in.

Operate personnel first take 9.5 mm drill bit hit through bottom hole, give hole wall four surround leave down 0.25 mm meat. Wait plate place cool, stress let finish, main shaft change on carry scale dial fine tune bore knife. Bore knife head upon that grain extremely small alloy blade stretches into hole inside, with per minute 30 mm turtle speed turning circle scrape, take hole diameter one thread one thread expand to standard 10 mm.

Hole inside thread dimension change shape same let human head ache, bump upon machine M16 above large thread more trouble. Use routine wire tap forcedly squeeze press cut, 45 steel plate thread tooth shape will be torn get emit hair, plug gauge twist to one half stuck dead twist not move. Understand line master change use multi edge thread mill knife, rely machine tool three axis link move walk spiral line. Thread middle diameter dimension margin dead dead pinch at 0.015 mm up down, mill out come thread hole both smooth slip and strictly no shape change.

Purchase Avoid Pit Guide

One family stall boss gives 45 steel quote out per kilogram 5.2 yuan, separate wall merchant only quote 4.5 yuan. One piece 2000 mm long, 1000 mm wide, 50 mm thick plate material, theory calculation heavy reach 785 kilograms. Unit price differenced 0.7 yuan, one whole piece plate settle account gold amount mutual difference high reach 550 yuan.

Cheap goods inside often mixed Q235 low carbon steel. Q235 carbon content only has 0.20%, even 45 steel's one half all not reach. Holding hand carry angle grind machine go scene grind one under edge. Q235 flying out come fire flower is dark red long strip straight line, 45 steel's fire flower will burst split out bright bright yellow multi fork star shape.

Workshop old hand go take goods, pocket inside forever tucks one piece palm big hard alloy waste blade, at steel plate corner upon ruthless ruthless scratch one knife look scratch mark deep shallow.

Label upon clear clear writes thickness 30 mm, take vernier caliper caliper one under edge, read number stop at 29.8 mm. Wait take back factory inside use saw machine cut open measure middle part, thickness hard raw raw shrink water arrived 28.5 mm. Steel factory for the sake of save material, roll out come plate middle thin two sides thick, line words call “waist drum shape” negative tolerance.

Pound scale upon number same kind will cheat human. Boss takes 50 mm thick plate throw up ground pound, show 802 kilograms. Set use volume multiply 7.85 density formula go calculate, full hit full calculate only need 785 kilograms. Ground pound bottom below possible early ahead cushion 15 kilograms match weight iron block, or logic calculate formula set use more thick name meaning dimension.

Prevent guard plan price hand segment's several actions:

· Check examine ground pound back zero: plate hang lift hang empty after, stare display screen must firm firm stop at 0.00 number upon.

· Agree order saw seam buy bill: cut become 600 mm square block, by saw strip eat drop's 3 mm width waste material who out money must early ahead speak clear.

· Refuse water part logic calculate: firm strict not according mark name thickness calculate volume, take micrometer real measure three points take level average value calculate weight.

Factory inside heap put hot roll hair blank plate surface attach catch one layer 0.5 mm thick black grey oxygen turn iron skin. Firm hard outside shell bottom below frequent frequent hide deep pit and clip slag. Buy one piece 40 mm thick black skin plate want mill to 35 mm, face mill knife just scrape off surface 2 mm, bottom below pop out one 3 mm deep sand eye, whole piece material only can throw into waste iron basket.

Buy machine work pass fine mill light plate can avoid open inside part sand eye. Supply goods merchant use large type dragon door mill machine take 40 mm original material up down each scrape drop 2 mm, sell to per kilogram 6.5 yuan. Stare surface knife line texture look, cut turn line texture resemble saw tooth one same rough rough (rough rough degree Ra exceed 6.3), bare expose out opposite square for the sake of catch time take advance give speed push arrived per minute 1000 mm.

Rough rough mill knife line texture will cover cover plate material inside part micro small crack line, knife line depth exceed 0.1 mm, stay at CNC machine tool upon fine repair find flat dimension remain amount then not enough use.

Take one handle 1 meter long steel straight ruler step put at plate face middle space, bottom below can light loose stuff enter 2 mm thick stuff ruler piece, plate early already bend become potato piece shape. Take it move up machine work center use liquid press pliers dead dead clip tight, must hard raw raw scrape drop 3 mm iron meat talent can plane out one flat tidy base standard face.

Sell family mark call plate do pass retreat fire go respond force place manage, per kilogram want add collect 1.5 yuan machine work fee. Dig out convenient carry type Li family hard degree calculate towards up one poke, not place manage pass original material hard degree at 190 HB left right. Hit out come number value if is still stop at 195 HB up down, enter 600 degree Celsius keep warm furnace retreat fire speak method pure pure is weave make lie words.

Measure try material state earth handle method:

· Listen sound sound: take half catty heavy iron hammer knock strike edge margin, retreat fire plate sound sound emit stuffy, not place manage raw material sound sound clear crisp pierce ear.

· Look color color: at high temperature furnace inside stuffy pass tens several hours steel plate, surface will pass through out one strand uniform uniform dark blue color tune.

· Try iron scraps: take hemp flower drill try hit bottom hole, not pass place manage iron scraps connect stretch not cut, tune pure pass iron scraps short urge moreover crisp.

Want seek cut become 500 mm square block, file mouth work human take 3000 degree Celsius oxygen acetyl flame gun go cut. Edge margin by high temperature melt transform again cold retreat, will form become one path 10 mm wide hot shadow response area. Edge margin hard degree soaring lift arrived HRC 45, combine metal mill knife one bump then will collapse break.

Rather wish per kilogram more dig 0.5 yuan, also want point fix bring saw machine down material. Double metal saw strip with per minute 40 meter speed come return pull pull, whole pass course pour wet water dissolve nature cold retreat liquid. Cut out come edge margin hard degree dead dead protect hold at 190 HB original begin state. Cut break public difference by press at right 2 mm inside, one point not hurt CNC high speed knife head.

Bump up thickness exceed 80 mm, absolute not can receive hot change form heavy type base seat material, per meter 15 yuan high price water knife cut break is narrow one can protect hold machine work precise degree hand segment.

Lift goods time wrap go store house most bottom layer go turn look store survive. Put 6 months not paint prevent rust oil 45 steel plate, surface will rot out 0.2 mm deep red rust pit. Pull return car room which fear use work business spray sand machine hit drop iron rust, pit puddle surface return must rely machine tool more eat knife 0.5 mm. Surface grow out orange piece skin one same deep layer rust spot plate absolute not can pack car.

1.5 ton heavy one fold steel plate use goods car pull arrived factory area door mouth. Supply goods merchant pack car time not at plate between place cushion up 100 mm multiply 100 mm wood square, fork car two root real heart steel fork root origin insert not enter seam gap inside. Work human must take two meter long pry stick hard raw raw pry open 50 mm empty gap, risk press break hand finger wind danger towards inside stuff lift heavy hang belt.

Block

Black Skin & Light Plate

Steel factory out come 45 steel big plate, surface bring have one layer 0.5 mm arrived 1.2 mm thick black hu hu oxygen turn skin. Take bring saw machine go cut 12 meter long steel material, cut mouth leave down saw tooth print, high low drop difference can reach arrived 0.8 mm. This kind bring skin hair material surface hard degree have Bu family hard degree 350, inside face hard degree is 190.

CNC main shaft turn speed open arrived per minute 2500 turn, common pass hard quality combine metal knife bump arrive black skin, knife point horse up collapse drop micro small break scraps. Black skin dreg drop enter cut turn liquid, will take machine tool lead rail draw out small mouth. Car room face deal black skin material have one set hard point mark:

· Single side leave foot 2.5 mm meat.

· Change up 45 degree lean angle fly knife plate open rough.

· Advance give speed strong walk chop drop 40%.

· First knife deep tie 1.5 mm cross pass hard shell.

Bump arrive 80 mm above thick iron block, saw machine cut turn speed extreme slow, supply goods merchant change use fire flame cut break. 3000 degree high temperature fire seedling burn pass steel plate, cut out seam gap have 6 mm wide. Melt transform again solid firm iron water hang at material edge margin up, take hammer strike can hear see crisp sound.

Fire burn pass material leave have 4 mm arrived 7 mm hot shadow response area. Edge margin part position hard degree cross pass Luo family hard degree 55. Mill knife press per minute 1200 mm speed bump up go, knife piece exactly field break become dreg. Machine work fire cut material, single side strong make increase add 10 mm above remain amount.

Increase add pre calculate can buy arrived six face fine mill light plate. Sell steel material factory child open move double head water grind machine with dragon door mill, take black skin complete department pull out dry clean. 300 mm see square iron block suck at electric magnet plate up, 250 mm straight path knife plate sweep pass go, two face do flat only want 15 minute.

Fine mill light plate long wide dimension error difference press at +0.1 mm arrived +0.3 mm, thickness clip exact at ±0.05 mm. Take 0.02 mm stuff ruler measure flat tidy degree, thin piece stuff not enter bottom face seam gap. Up machine front not use hold heart respond force change form, stuff enter flat mouth pliers hit table then can dry live.

Dry clean light plate up machine can dig out not little real benefit:

· Save down change fly knife plate face knife 12 minute.

· Seek edge implement bump number error difference press enter 0.005 mm.

· Bottom face with table tiger pliers cushion block paste gather degree cross 95%.

· Single piece material save out 15 block money knife piece consume waste.

Buy bring skin hair material one kilo gram 5 block 5. Light plate one kilo gram more collect 1 block 5 arrived 2 block 2 machine work fee. Buy one piece 30 kilo gram plate, difference price at 60 block money up down. CNC open move one small hour cost basis 80 block, take machine tool bite black skin account face lose basis. Light plate heavy measure error difference not arrived 0.5%, hair material bring dreg pass pound heavy measure false high 4% arrived 7%.

Long wide ratio example big pass 6 compare 1 thin long strip light plate, 800 mm long 120 mm wide whole material, peel drop two face each 3 mm skin, inside part respond force flat balance hit break. Put frame up dry 48 small hour, two head towards up lift 0.4 mm. Hit table measure out change form, must stuff enter furnace burn arrived 550 degree retreat fire, keep warm 4 small hour put cold use grind machine rub drop 0.1 mm.

Not skin iron block touch dot wet air pop out yellow rust. Car room wet degree cross pass 65%, light face 4 small hour grow full brown spot. Prevent rust oil one square meter wipe 15 gram, outside face wrap up 3 layer wrap around film strict close hit pack. Delicate expensive material save put at material frame have complete body rule rectangle:

· Bottom below cushion 50 mm thick dry pine wood separate wet.

· Iron block stack put high degree not exact cross pass 1.2 meter.

· Every layer middle space clip 2 mm thick tile corrugate paper board.

· Far apart sour nature cut turn liquid empty barrel put place.

Bear responsibility weave program human take arrived this two batch material, electric brain write knife path give data complete complete two set. Black skin material long wide towards outside expand 3 mm, Z axis top face lift high 2 mm. Light plate material hair blank frame paste tight three dimension picture paper, first handle knife run straight line light tidy edge margin, empty cut road line little walk 40%.

45 Steel Superior Force

45 steel contain carbon amount clip at 0.42% arrived 0.50% number value area space. Iron water inside mix enter this ratio example carbon element, let material Bu family hard degree out factory state stable fix at HB 170 arrived 210 between. Machine work car room pick buy single up, 10 piece not standard fix make piece inside have 7 piece mark note use should brand mark.

Low carbon steel Q235 cut lift come resemble cow skin sugar, aluminum combine metal hold easy stick knife. 45 steel up machine walk knife, cut turn back feed hold exactly beg happy. Main shaft turn speed set fix per minute 1500 turn, advance give speed push arrived 800 mm per minute, cut down come iron scraps will self nature roll become C word shape or 6 word shape.

Roll bend iron scraps long degree reach arrived 10 mm arrived 15 mm then will self line fold break. Break scraps dry crack profit drop avoid depart iron wire wrap around main shaft trouble. Cut turn liquid rush brush down, break scraps smooth along drain scraps trough hua la la drop enter receive gather car, work human not use every divide 20 minute stop machine take iron hook clear manage machine tool inside part.

Drain scraps smooth open let knife tool life destiny extend long approx 30%. One handle 12 mm straight path tungsten steel stand mill knife can connect continuous machine work 8 small hour above. Use straight path 50 mm fly knife plate run flat flat face, cut turn deep degree set fix 0.2 mm, out come surface rough rough degree can light loose reach arrived Ra 1.6.

45 steel call tyrant car room original cause at hot place manage furnace inside. Take steel block send enter 840 degree add hot furnace keep warm 2 small hour. Take out come quick fast throw enter room temperature salt water or quench fire oil inside cold retreat, original basis HB 200 hard degree can blink eye soaring lift arrived Luo family hard degree HRC 55.

Just quench complete fire steel block too crisp, drop at water mud ground up hold easy collapse corner. Work human take it again send enter 600 degree return fire furnace inside roast 4 small hour. Take out come material inside part gold phase group weave change become return fire Suo family body, hard degree return drop arrived HRC 28 arrived 32, tough nature big width degree lift lift.

Tune pure place manage post steel block resist pull strong degree sudden break 600 mega Pa. Take come do bump bed down mold plate, receive bear tens several ton bump press force not will collapse fall concave fall. Make become shaft bear seat, inside part hole path public difference at connect continuous move turn half year post rely naturally protect hold at 0.01 mm change move range surround inside.

45 steel light plate batch emit price common year maintain hold at per kilo gram 7 yuan arrived 8 yuan float move. Same level thickness Cr12MoV mold implement steel per kilo gram want price touch near 25 yuan.

Several time difference price at batch amount connect single time take cost basis pull open huge big large ditch. Meet arrive common rule strong degree machine tool structure piece, picture paper work art column full screen all is 45 steel print stamp. Drop solid arrived dry live fine detail up, superior force tear understand become complete body machine work data:

· Attack thread damage waste extreme low, M8 snail turn trough wire cone connect continuous attack out 500 thread hole, tooth distance error difference not cross 0.02 mm.

· Drill head enter knife stable fix, hit pass 50 mm thick real heart plate, hole path single side lean swing press make at 0.05 mm inside.

· Grind machine eat knife amount big, 46 grain degree sand wheel single time down press 0.02 mm fire flower even uniform, not easy lead emit surface burn hurt micro crack line.

· Lead hot rate reach arrived 48 W/(m·K), high speed cut turn birth emit 600 degree high temperature have one half can smooth along iron scraps bring walk.

Take three money car room common guest do cross direction data hold compare, old gold work master partial love it original cause complete at table frame data inside.

Q235 too soft, 40Cr price block partial high moreover machine work eat knife block force increase big 15%. 45 steel fill supplement middle space huge big real use ground belt. Bump arrive need want weld connect piece install not standard piece, it same sample can no seam connect link weld work human operate table.

Two oxygen turn carbon gas body protect protect weld face face 45 steel have special fix parameter group combine. Plate thick cross pass 20 mm, weld front take fire flame spray gun take connect seam place advance hot arrived 150 degree arrived 200 degree between. Weld wire choose use ER50-6 shape mark, electric flow tune arrived 220 ampere, electric press stable at 24 volt.

Advance hot operate prevent stop weld seam area space quick fast cold retreat birth emit horse family body crisp transform. Smooth along slope mouth weld complete three layer, take keep warm cotton wrap hold connect mouth slow slow drop temperature 4 small hour. Cross sound wave seek hurt instrument sweep pass weld seam no cold crack line letter number, connect head resist pull strong degree reach arrived mother material 85% above.

Electric plate factory work art pool connect manage post follow flow pass course. Emit black place manage is most cheap do method, take piece throw enter 140 degree hydrogen oxygen turn sodium with sub-nitric acid turn sodium mix combine boil liquid inside boil up 40 minute.

Surface birth become 1 micro meter fine dense four oxygen turn three iron blue black film single price press kilo gram calculate not arrived 1 block money, prevent rust energy force support pass room inside save put half year. Demand beg high picture paper will mark clear plate hard chrome. Electric dissolve liquid pool inside hang up 2 small hour, piece surface attach catch up thickness 20 micro meter arrived 50 micro meter chrome layer.

Plate chrome 45 steel shaft surface hard degree rush break Wei family hard degree HV 800. Throw enter salt fog test try box inside connect continuous spray shower 96 small hour, take out come surface find not arrived one rust point. One root make price two hundred block common pass light shaft, spend thirty block money electric plate, bear wear life destiny flip three time.

Machine tool basis body base seat make create big amount consume waste should brand mark steel plate. Number control install prepare main shaft with 8000 turn high speed transport turn, will take high frequency micro small shake move pass hand give complete table machine implement. Real heart 45 steel mold block inside part gold phase crystal border can suck receive drop one part shake swing wave width.

Measure calculate instrument implement hit at bed body up, shake width by press make at micro meter level separate. Heavy reach 5 ton dragon door mill machine stand pillar, complete steel plate weld connect structure frame little not drop tens several piece thickness 40 mm 45 steel add strong rib.

Thickness

Store room material frame up 45 steel plate press thickness stroke divide out clear manifest object manage camp field. 10 mm arrived 30 mm thin plate, roll material pick buy open flat place manage, flat tidy degree error difference at 2 mm up down. Cross pass 50 mm dimension door threshold, steel factory adopt use steel ingot advance walk hot roll press stretch. Out factory rule format one road soaring lift arrived 300 mm above special thick block material.

Thickness number value branch distribute down material car room cut break machine shape. 3000 watt shock light cut break machine face face 50 mm limit below steel plate, 1 minute inside cut pass 2 meter long seam gap, cut face rough rough degree press near Ra 12.5. Meet arrive 150 mm big thick block, shock light light bunch pass completely energy force weak lose completely exhaust. Car room work human open move heavy type dragon door bring saw machine connect hand big thick plate cut break work business.

Double stand pillar bring saw machine install match 41 mm wide M42 double metal saw strip. Saw cut 200 mm thick 45 steel real heart material, line speed set fix at per minute 25 meter. Cold retreat liquid face hold cut mouth fierce rush bring walk rub wipe high hot. Cut break one piece long wide each 400 mm square block, machine implement connect continuous roar cry 45 minute.

Pick buy single up mark note thickness 100 mm hair material, long wide square direction strong make add put 5 mm remain amount. Thickness square direction eat knife receive force huge big, up down two face arrive little each leave out 3 mm black skin remain amount, supply give double face water grind machine scrape flat.

Steel ingot at melt steel factory pour build cold retreat step section, outside part first knot crystal, inside part slow slow firm solid. Thickness sudden break 120 mm 45 steel mold block, middle heart area space extreme easy nourish birth shrink hole with loose relax. Cut open thick plate cross cut face, meat eye occasional occasional can glimpse see needle point big small sand eye. Heavy load mold implement avoid open bring have sand eye area space advance walk picture paper row edition.

CNC machine tool install up straight path 63 mm corn mill knife carry out hold open rough course sequence. Z axis down tie deep degree push arrived 50 mm, main shaft bear carry climb lift reach 85%. Knife piece bump up inside part hide hide micro small clip slag, paint layer knife grain blink eye collapse crack. Report waste tungsten steel shatter block inlay embed at iron block inside, work human take combine metal cone pick remove remain bone spend waste half small hour.

Respond face thick plate inside part flaw speck, enter factory check examine flow pass course strong make lead enter cross sound wave seek hurt instrument. Seek head wipe up machine oil paste hold steel block surface slide move, sound wave pass completely 150 mm thick steel layer back shoot return wave. Instrument implement screen curtain up wave shape jump out strange common point peak. Bring lack fall whole piece big material original road pull return steel material batch emit merchant store house.

Cross pass 100 mm 45 steel big block material, pick buy combine contract strong make tie fix GB/T 2970-2016 seek hurt standard rule. Clause paragraph clear exact seek hurt level separate reach arrived II level, protect exactly steel block deep place not have straight path cross pass 5 mm right measure lack fall.

Thickness data clip dead 45 steel hot place manage up limit. It quench pass nature object manage point mark partial low, furnace temperature pull lift arrived 840 degree burn red, scoop out dip enter room temperature water pool cold retreat. Water flow bring walk surface hot amount, only can take towards inside 15 mm arrived 20 mm steel layer quench hard reach HRC 50.

Cut open one piece thickness 80 mm quench fire mold block measure calculate cut face hard degree. Outside side edge margin Luo family hard degree calculate hit out HRC 52. Towards middle heart shift move seek head, every advance advance 5 mm hard degree data towards down drop one cut section. Most middle heart core part area space hard degree calculate read number drop pass HRC 25, protect stay not quench fire front soft state special quality.

Machine work place manage big thick plate outside hard inside soft special nature, have one set already fix data law rule:

· High frequency quench fire replace generation complete body quench fire, sense respond circle add hot surface 2 mm deep degree.

· Set plan picture paper take receive force point complete department gather middle at hard degree most high outside side edge margin area space.

· Middle heart soft area space real act dig empty, inlay embed hard degree HRC 60 Cr12MoV bump head part piece.

Big thickness steel block quench fire outside hard inside soft, thin plate quench fire face near huge big twist bend change form. Long 600 mm, thickness only act 15 mm 45 steel plate, down water cold retreat blink eye inside part respond force burst emit. Two head towards up lift lift high reach 8 mm. Car room master reject absolute connect receive long thick ratio cross pass 10 compare 1 thin plate quench fire send work single.

Strong walk take change form thin plate throw up 100 ton oil press machine school flat. Inside part dark hide micro crack line will at post follow mill cut dig trough middle sudden run explode crack. Thickness low at 20 mm structure piece, hot place manage work art retreat let act tune pure, avoid open high hard degree bring come shape change disaster difficult.

Mill machine machine work not same thickness mold block, cushion block high degree match put big have speak究. Clip hold 40 mm thick steel block, flat level cushion block high degree choose fix 30 mm. Tiger pliers pliers mouth dead dead bite hold 10 mm side edge. Advance give speed push arrived per minute 600 mm, machine tool main shaft cut turn sound sound sink stuffy flat steady.

Change become 12 mm thick thin plate, tiger pliers have effect clip hold high degree drop reach 3 mm. Cut turn liquid rush brush knife tool side direction eat knife receive force, extreme easy take thin plate follow pliers mouth raw pull hard drag out come. Operate human withdraw drop flat mouth pliers, material block flat pave at true empty suck plate up open start negative press suck attach bottom face.

Thick mold block hit deep hole, drain iron scraps become thorn hand difficult problem. Common pass hemp flower drill hit pass 150 mm thick 45 steel, roll bend cut scraps block plug at snail turn trough inside part. Drill head at hole bottom rub wipe lift temperature reach 400 degree, cold retreat liquid pour not enter go. High speed steel drill head point end number second inside burn become blue color retreat fire soft transform.

Weave program point command strong make write enter G83 deep hole peck drill generation code. Every towards down drill enter 5 mm deep degree, drill head pull out hole outside swing drop iron scraps. One strip 150 mm deep hole, hemp flower drill up down towards return move move 30 time, cut turn liquid ride opportunity pour pour hole bottom drop temperature.

Batch amount machine work thickness cross pass 80 mm bottom plate, car room wash complete hemp flower drill change install inside cold U drill. Bring press force water pump take cut turn liquid smooth along U drill inside part water hole spray shoot, water press open arrived 2 mega Pa point mark. High press water flow take iron scraps strong walk rush brush out hole wall, drill hole waste time shrink short four time.

Fold add thickness let snail turn thread attack wire twist distance present finger number put big. At 100 mm thick steel block up attack M16 deep hole blind tooth, wire cone down seek arrived 60 mm deep place. Cut turn rub wipe block force press near wire cone twist break limit border. Car room strict forbid connect continuous towards down attack tooth, break crack tungsten steel wire cone clip at hole bottom let complete block material report waste.

Face pay deep hole snail turn thread, CNC main shaft change install single blade snail turn thread mill knife. Smooth along hole wall walk snail turn thread line insert supplement track trace. Single time cut turn deep degree transform complete act zero, knife tool bear receive block force drop reach common pass wire cone ten divide one. 100 mm thick snail turn thread hole divide 5 knife flat steady mill out standard tooth shape.

Round Bar Supply

Hot Roll Black Skin Bar vs Cold Pull Light Round Bar

Steel factory at 1100℃ fire furnace inside take steel block burn red, press become round pillar body. This piece steel one connect touch empty air, surface then will stand quarter knot out one layer 1.5 arrived 3 mm thick black grey hard shell, this also is we common say hot roll black skin bar.

This layer black skin special separate hard moreover crisp, inside face wrap hide talent is face correct soft one dot normal 45 steel. If straight connect take knife go cut this layer outside skin, car bed knife piece will rub waste get very fast. Work human dry live time, only can take machine implement turn speed tune arrived 800 arrived 1200 turn, let knife point one down child tie enter 2.5 mm deep, hard raw raw cross pass this layer hard shell, go cut inside face clean clean steel material.

Except outside skin hurt knife, black skin bar base body also not too round.

· 30 mm thick steel bar, allow agree have ±0.4 mm error difference.

· Surface touch lift come very rough rough, concave convex not flat.

· Clip at car bed inside time, very easy because receive force not even uniform emit birth light micro shake move.

Because this kind not rule regular, high precise degree number control walk heart machine root origin no method use black skin bar. This time then need want take original basis steel material first soak sour wash drop black skin, correct post at common temperature down, use several hundred ton strength energy take it hard pull pass one tungsten steel make mold child, this then become complete cold pull light round bar.

Pass through this sample one pull tear, steel material inside part by pull tight, change get more hard more crisp. Good place is cut turn time, drop down come iron scraps very easy break open, not will one long strip complete wrap around at machine implement up.

Cold pull light round dimension extreme its exact standard, surface float bring bright light gold belong light bright.

· One root 20 mm thick cold pull round bar, error difference by strict rule clip at -0.052 mm inside.

· Surface flat slip degree very high, meat eye few care look not arrive machine work trace mark.

· Machine implement turn speed soaring arrived 4000 turn, long strip steel bar at inside face turn get steady steady exact exact, complete complete not shake.

Dimension this sample standard, buy come then can straight connect dry live. Compare like do one outside path 15 mm small shaft, buy 15.2 mm light round, surface only want thin thin car drop 0.1 mm then walk. Original basis use black skin bar must from 20 mm open begin one dot dot towards down peel, want spend 4 divide half clock, change become light round post only want 1 divide 50 second then can do good one.

Not pass, machine work become light round need want dig remove rust fee, mold implement fee with human work fee. Calculate down come, per ton cold pull light round want compare black skin bar expensive up 800 arrived 1200 block money.

Save put lift come also very delicate expensive. Black skin bar self bring one layer oxygen turn skin act protect protect umbrella, throw at bare sky empty ground up shower rain all can connect touch use. But cold pull light round if is not have paint prevent rust oil, not have use special gate prevent rust film wrap catch, put at tide wet empty air inside 48 small hour then will birth out yellow rust, flat time must honest honest real real stay at 25℃ left right room inside goods frame up.

Straight Line Degree

One root 3 meter long 45 steel round bar flat put at cast iron check examine flat table up, use hand push catch roll move several circle, bottom below leak out light gap lift show material true real object manage state limit. Steel factory become batch roll make post become heap put place at car room cold retreat, several ton heavy gold belong mutual mutual squeeze press, out factory time every meter bring have 2 arrived 4 mm bend song amount extreme its flat common. Bring catch bend song arc degree steel material strong walk stuff enter machine work set prepare, post follow car turn operate work will trouble not cut.

Three claw liquid press clip plate clip tight this cut segment bend song steel material, follow catch main shaft turn speed climb lift arrived 2500 turn/divide, peaceful quiet machine tool outside shell open begin emit out low sink weng weng sound. Material tail part at leave heart force pull tear down drama intense swing move, lean heart quality measure emit birth path direction jump move amount can put big arrived 0.8 mm above.

Drama intense shake move smooth along knife frame pass lead, heavy reach 5 ton machine tool base seat also press not live main shaft box total shake. Several thousand turn high speed turn turn down, bend song round bar transform body one root lean heart shaft, connect continue face machine tool inside part pottery porcelain main shaft bear bear apply add number hundred kilo gram not exact common side direction rush hit force. New change P4 level separate high precise degree bear bear, out factory mark note have 8000 small hour transport turn life destiny, several pass destroy remain not arrived three month roll road then will out appear strict heavy strip drop phenomenon elephant.

Eat knife amount follow catch material jump move sudden big sudden small, every second clock receive bear tens several time break connect cut turn bring come machine implement rush hit. Single piece pick buy price 85 yuan advance mouth knife piece, cut turn light round can hold pass 400 piece birth product, bump up bend song jump move material, machine work not arrived 50 piece knife point then will collapse crack, drop fall broken scraps will at zero piece surface stroke out one path extreme deep ditch trough.

One root outside path 40 mm hot roll black skin bar send enter double roll tune straight machine, two root bring have special fix double curve line wheel profile combine metal roll press with 15 degree tilt angle up down wrong open. Liquid press pump station open start, apply add cross pass 200 ton heavy press, take bend song steel material resemble knead face group one same return back roll press.

Steel material at roll press room one side self turn one side with per minute 12 meter speed towards front walk advance. Rough rough surface at several hundred ton squeeze press rub wipe down strip drop down one layer black grey color oxygen turn iron skin, bend song inside respond force by strong walk hit cut moreover heavy start divide arrange. Walk complete 3 meter complete course only need 15 second, push up check examine flat table use thousand divide table hit table measure calculate, jump move amount already jing by dead dead press make at 0.5 mm inside.

Common pass car bed face short material contain endure degree tiny micro high one dot, walk heart style number control car bed face long shaft material flat straight degree have catch extreme its strict harsh demand beg. Walk heart machine lead sleeve hole path compare material outside path only big 0.01 arrived 0.02 mm, special use at machine work fine long shaft kind zero piece. One root 2.5 meter long, straight path 16 mm cold pull light round, middle space have cross pass 0.3 mm micro small bend song, root origin pass not pass that path narrow narrow tungsten steel lead sleeve.

Hard insert enter go post fruit is material at lead sleeve inside clip dead, wait serve electric machine cross load report police, 3000 watt drive move implement blink eye flash lift red light stop machine. Reluctant strong pass pass go, spring force also will take material tight tight press at lead sleeve inside wall up mad rub. Surface rough rough degree Ra 1.6 micro meter light clean outside view, turn up several circle then by grind out pull hurt net texture, rub wipe birth hot reach arrived two hundred degree above, take cut turn oil roast out pierce nose white smoke.

Machine work car room at down reach pick buy single time, will face material pen straight course degree do complete body measure transform divide level:

· Common pass shaft kind rough car work business: every meter bend song degree not cross pass 3.0 mm, cut turn remain amount big.

· High speed number control fine car work business: jump move amount control make at every meter 1.0 mm inside, protect main shaft.

· Walk heart machine long material machine work work business: public difference extreme strict, every meter bend song degree only allow agree 0.3 mm.

· Deep hole drill cut machine work work business: prevent stop drill head walk lean, every meter jump move amount small at 0.5 mm.

Make create steam car pass move empty heart shaft, want at outside path 50 mm real heart round bar middle heart hit one deep reach 400 mm blind hole. Drill head every minute turn speed high reach 1500 turn, middle heart point lean depart 0.1 mm, drill head front end will at pipe inside more walk more crooked.

Pick buy account base record catch clear fine, not same machine work square style face straight line degree demand beg with partner follow hide shape cost basis can clear clear measure transform hold compare.

Account face up more dig several hundred block money tune straight fee, exchange come complete individual machine work flow pass course smooth clear transport turn. Not use every day early morning spend one more small hour row check machine strange sound, operate work not need want lift heart hang gall stare catch clip plate look it follow time fly out material head. Material straight finish machine tool life destiny self nature pull long.

Material Quality Standard Rule

One sheet bring red stamp material quality single pat at pick buy handle public desk up, print catch GB/T 699-2015 country family standard rule word sample, is divide exact 45 steel true real become divide accurate birth proof. Melt steel furnace inside flip roll catch 1600℃ steel water, several kilo gram combine metal original material add subtract, will let complete furnace 80 ton steel material object manage temper gas emit birth huge change.

Change examine single up row at first one position is carbon element, match compare by dead dead clip at 0.42% arrived 0.50% narrow tight area space inside. Little at 0.42%, material too soft, up machine tool cut turn time iron scraps will resemble year cake one same stick at knife point up drain not out go. More add 0.05% carbon, steel bar enter water quench fire time surface stand horse will collapse out several mm deep fine small crack line.

Carbon contain amount is firm nature check examine number word. Change examine single hit out come show show 0.46%, hot place manage car room master take go high temperature add hot again quench fire heart inside then have finish bottom, hard degree absolute limit can steady steady fall at HRC 45.

Melt steel use big amount waste steel with raw iron block inside, sky naturally bring catch sulfur with phosphorus two individual pound egg ghost. Country standard word piece take sulfur with phosphorus allow agree up limit complete department press make at 0.035% inside. Phosphorus cross pass standard finish, steel material at zero down 20 degree door outside view mark middle will change get resemble glass one same crisp; sulfur cross pass standard finish, several hundred degree cut turn high temperature down material inside part will self move collapse shatter.

Sulfur phosphorus contain amount soaring lift arrived 0.06% bad quality black skin bar steal steal mix enter correct rule material store, machine work out come tooth wheel install pack at minus speed machine inside turn not arrived three month then will drop tooth.

Want pull out come history not clear steel material, check examine human tight stare catch round bar end face hit up one string steel print number word. Six position number furnace number (Heat Number) with material quality single up weave code one one face answer. Rely pass connect string number word, can one road chase trace arrived three month front Bao steel or Sha steel certain one time concrete real melt refine record record.

· Furnace number chase trace source: 823451

· Carbon (C) contain amount: 0.45%

· Manganese (Mn) contain amount: 0.65%

· Silicon (Si) contain amount: 0.23%

Big type steel factory out factory front take straight read light spectrum instrument face catch steel bar cut face hit one bunch fire flower, 3 second clock inside electric brain screen curtain up will jump out ten several kind element exact confirm hundred divide ratio. Check examine table frame up change examine data complete department bright lift green light, big batch amount round bar talent can by hit pack paste up mark label emit towards each place machine work car room.

Have some partial remote small steel factory for the sake of save down high lift manganese iron combine metal cost basis, will at steel water inside steal steal scatter up one handle cheap profit boron element. One ton steel material add advance go tens several gram boron, surface quench fire post hard degree measure try light sample can reach arrived HRC 45 standard rule, cheat mix pass border light and easy.

Luo family hard degree calculate seek head at steel bar surface smash out one shallow pit, read number not have problem. Cut open round bar take seek head go measure try cut face middle heart, hard degree break cliff style down fall arrived HRC 20.

Mix finish boron steel bar inside part root origin quench not pass completely, machine work become straight path 60 mm pass move real heart shaft, surface look catch quite hard, inside core soft get resemble one piece common pass raw iron. Drag pull machine hang up heavy load start step blink eye, several hundred cow meter twist distance pass lead pass go, complete root shaft will at middle space resemble twist hemp flower one same exactly field twist break.

Divide open carbon, silicon, manganese, correct original 45 steel inside allow agree contain have micro amount chrome, nickel, copper, every one kind up limit by strict rule limit make at 0.25% inside. Mix mixed waste material not pass through fine refine remove mixed quality, bring advance go cross pass 0.3% copper element, steel material high temperature forge build time surface will crack open resemble turtle shell one same net shape texture road.

Light look transform learn become divide report tell return difference one step, force learn nature energy pull stretch measure try is check examine material strong degree hard point mark. From complete bundle steel bar inside follow convenient saw down 200 mm long one cut segment, up car bed machine work become middle space fine two head thick dog bone head shape state, clip at ten thousand energy material try verify machine up down tungsten steel pliers mouth inside.

Liquid press pull stretch machine with per minute 10 mm speed towards up raw pull hard drag, electric brain screen curtain up receive force curve line not cut break climb lift. Pull force sudden break 355 MPa time, measure try bar open begin emit birth pull long moreover no method return original change form, pass sense implement take read number exact confirm record record as bend submit strong degree.

· Bend submit strong degree measure try: ≥ 355 MPa

· Resist pull extreme limit strong degree: ≥ 600 MPa

· Mark distance stretch long rate: ≥ 16%

· Cut face receive shrink rate: ≥ 40%

Connect continue add big pull force arrived 600 MPa above, partner follow “peng” one sound stuffy ring, steel bar by hard raw raw pull break. Break mouth place face accumulate shrink small finish 40% above, prove clear by measure material force gas big moreover possess have extreme good tough nature, meet arrive drama intense bump hit only will bend song not will light easy break become two cut segment.