Cold-rolled steel: yam ntxwv, nta, kev siv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cold-rolled steel (txias-dov) yog ib qho ntawm cov xav tau tshaj plaws ntawm cov hlau niaj hnub. Nyob rau hauv tag nrho cov nqi ntawm cov hlau tsim, lub ntim ntawm nyias nplooj ntawv yog tsis tu ncua nce. Nws yog tsim, raws li lub npe implies, los ntawm txias dov. Ductile hlau yog ua tiav los ntawm lub siab yam tsis muaj preheating los ntawm ib txoj kev tshwj xeeb. Nws yog tsim nyob rau hauv ob hom - txias-kuav los tiag ntawv thiab nyob rau hauv yob. Cov khoom tiav tuaj yeem ua qhov ntev thiab qhov ntau thiab tsawg, txiav ntug, crimped.

yam ntxwv ntawm txias dov steel

Qhov kev thov loj zuj zus rau cov khoom siv txias txias yog vim muaj cov yam ntxwv zoo dua li cov khoom kub dov. Tsis tas li ntawd, kev tsim cov ntawv hlau nrog lub thickness ntawm 1 hli los yog tsawg dua yog kev lag luam tsuas yog nyob rau hauv txoj kev txias. Txias dov yog siv rau cov pa roj carbon zoo tib yam, cov pa roj carbon zoo, alloy thiab cov hlau alloy siab, corrosion-resistant, kub-resistant thiab kub-resistant alloys. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov txheej txheem hlau txiav txim siab cov khoom ntawm qhov tshwm sim ntawm cov hlau dov thiab, rau qee qhov, qhov peev txheej ntawm nws daim ntawv thov. Yog, rauComplex stamped khoom, low-carbon txias-rolled sheet hlau, GOST 19904-90, yog siv. Lub microstructure ntawm cov hlau tom qab dov loj txiav txim siab nws cov ductility, tag nrho lwm yam yog sib npaug.

Cold-rolled steel yog tsim nrog lub thickness ntawm 0.25-5.0 hli thiab muab nkag rau hauv cov ntawv ntawm ntau qhov ntau thiab tsawg - los ntawm 510x710 hli mus rau 1250x2500 hli. Hlau 0.25-2 hli tuab tuaj yeem muab galvanized. Cold-rolled transformer steel ntawv yog tsim nrog lub thickness ntawm 0.28-0.5 hli, daim ntawv qhov ntev 750-1000 hli. Cov kev cai tseem ceeb yog muab tso rau pem hauv ntej rau transformer steel, uas yog, qhov loj ntawm magnetic induction thiab qhov loj ntawm watt poob. Cold-rolled steel sheets thiab coils yog tsim los ntawm cov qauv hlau, alloyed zoo structural steels rau lub hom phiaj tshwj xeeb, hluav taws xob tsawg-carbon thiab silicon steels. Txias-dov caij nplooj ntoos hlav sawb, cuab yeej sawb, rau sib nqus circuits yog tsim.

Ntawm daim ntawv txias dov

Cov ntawv txias-kua nplaum yog tsim los ntawm qib steel, cov tshuaj muaj pes tsawg leeg uas tau txiav txim siab los ntawm GOST 1050-88: 08ps, 08kp, 10kp, 10ps, 15ps, 15kp, 20ps, 20kp, 25, 30, 35, 40, 45. Rau txias stamping yog raug rau high-zoo steel qib 08yu, 08kp thiab 08ps. Qhov saum npoo ntawm cov hlau txias txias yog smoother thiab cov geometry yog qhov tseeb dua.

Txawm li cas los xij rau nws lub npe, txias dov hlau tsis zam kev kho cua sov. Txhua yam txias-kuav los tiag steel yog tsim los ntawm kub dov billets.

Kev ua kom txias txiassteel

Cov ntawv txias-dov yog ua ob txoj kev: daim ntawv lossis yob. Nrog rau daim ntawv-los-daim ntawv txoj kev, kub-kuav los tiag hlau ua nyob rau hauv ib tug coil tom qab txias dov yog txiav mus rau hauv nplooj ntawv, uas yog twb xa mus rau tus kheej rau kev ua hauj lwm ntxiv (annealing, straightening, thiab lwm yam).

Nyob rau hauv niaj hnub tsim, nyiam yog muab rau txoj kev yob. Nyob rau hauv cov ntaub ntawv no, tag nrho cov theem ntawm zus tau tej cov txias steel yog nqa tawm nyob rau hauv yob thiab cov khoom tiav yog txiav mus rau hauv nplooj ntawv manually los yog txiav. Cov txheej txheem dov ua rau nws muaj peev xwm ua kom cov khoom siv thev naus laus zis ua haujlwm ntau, ua kom cov khoom tiav tiav, txhim kho cov khoom thiab cov duab ntawm cov hlau vim kev ruaj ntseg ntawm cov txheej txheem ntau lawm. Nrog rau txoj kev no, kev nce hauv cov zis ntawm cov khoom tiav tuaj yeem ua tau ntawm tib qhov chaw. Qee zaum, txias dov steel yog nkag rau hauv coils. Nyob ntawm cov txheej txheem thev naus laus zis ntawm qee lub tuam txhab tsim tshuab, qhov no txo cov khoom pov tseg. Hauv kev tsim cov hlau txias, cov haujlwm yuav tsum tau ua yog ntxuav cov kub dov strips los ntawm nplai, dov ntawm mills (rov qab los yog txuas ntxiv), kev kho cua sov, txiav, ncaj.

Cov yam ntxwv tshwj xeeb ntawm cov khoom kub-kuav los tiag thiab cov khoom txias-kub

Kub dov hlau yog yooj yim rau txheej txheem. Rau cov khoom tsim los ntawm kub dov, qib qis, qis-nqi steel yog siv ntau dua. Cov khoom tiav yog feem ntau them nrog nplai thiab yuav tsum tau ua ntxiv. Vim nws tsis yooj yim suaxam cov kev txwv ntawm cov hlau deformation thaum lub sij hawm txias, geometry ntawm kub dov hlau tsis nruj (tsis sib npaug thickness, tsis sib luag npoo thiab cov fab).

Cov txheej txheem txias-kuav los ntawm dov ua rau nws muaj peev xwm tswj tau qhov ntev ntawm cov khoom. Qhov saum npoo ntawm cov khoom dov yog smoother, lub thickness yog uniform, yog li qhov kawg ua ntawm cov khoom yog txo, thiab tej zaum kuj tsis yuav tsum tau. Vim nws homogeneous qauv, txias-kuav los tiag hlau yog ntau ruaj thiab muaj zoo tensile, dabtsi yog khoov, thiab tensile zog. Cov hlau qib siab yog siv rau kev tsim khoom.

Daim ntawv thov txias dov steel

Cold-rolled steel yog siv nyob rau hauv ntau industries: nyob rau hauv lub tsheb kev lag luam rau lub cev ua hauj lwm, rau tshuab cuab yeej lub cev, ntau lawm cov cuab yeej, tshuab qhov chaw, kev tsim kho, kev lag luam, khoom siv hauv tsev.

Quiet steel 3 txias dov yog ib qho kim tshaj plaws ntawm tus nqi. Qhov tsawg kawg nkaus cov ntsiab lus ntawm cov pa oxygen ua rau muaj kev nce hauv qhov sib xws ntawm cov qauv, ductility thiab tiv thaiv corrosion. Nws yog siv rau cov khoom siv hlau nruj thiab cov khoom siv thauj khoom, zoo li cov hlau, qhov chaw ntawm cov kav dej fittings. Txias dov steel yog siv rau hauv kev tsim cov khoom raug thermal thiab tshuaj tua kab mob.