Dab tsi yogtxias dov dub annealed steel sawb?
Txias- dov dub annealed steel sawb yog cov hlau uas tau txias - dov thiab annealed tab sis tsis nto - tiav (xws li pickling, txheej lossis polishing). Qhov saum npoo khaws cov oxide zaj duab xis (dub grey los yog dub) tsim thaum lub sij hawm annealing.
Cov khoom qib ntawm txias dov dub annealed steel sawb
Suav Standard (GB/Enterprise Standard)
|
Hom |
txheem |
siv |
|
SPCC-BA |
GB/T 5213 |
Lub hom phiaj dav dav - dov dub annealed steel sawb |
|
DC01-BK |
GB/T 3280 |
Rau kev kos duab sib sib zog nqus, automotive tha xim sab hauv |
|
BLC-B |
Standard ntawm steel enterprise |
Cov khoom siv hauv tsev cov khoom siv, cov khoom siv kho vajtse |
International Standards
|
Hom |
txheem |
ua piv txwv |
|
SAE 1008-B |
ASTM A568 Cov Khoom Siv Hluav Taws Xob |
Tsawg carbon steel, dav dav lub hom phiaj dub annealed sawb |
|
DC04-BK |
TS EN 10130 |
High elongation, complex stampings |
|
SPCC-BK |
TIAB SA 3141 |
Japanese qauv, lub tsev npog |
Dab tsi yog Txoj Kev Dub Annealing?
Dub Annealing yog txheej txheem annealing rau hlau thaum tsis muaj cua tiv thaiv. Nws yog lub npe vim hais tias saum npoo ntawm cov hlau reacts nrog oxygen los tsim cov hlau oxide (Fe₃O₄) txheej tom qab annealing. Cov ntaub ntawv siv tau yog cov pa roj carbon steel thiab cov hlau tsis tshua muaj hlau.
Dab tsi yog qhov txawv ntawm dub annealed steel thiab txias dov hlau?
Kev ua tau zoo sib txawv (Siv SPCC txias dov daim ntawv ua piv txwv)
|
Kev ua haujlwm tsis zoo |
Dub annealing |
Cold dov hlau |
|
Tensile zog (MPa) |
280~350 |
350~600 |
|
Elongation (%) |
35~45 |
5~15 |
|
Vickers hardness (HV) |
80~120 |
120~200 |
|
Yield zog (MPa) |
180~220 |
300~450 |
Tej yam txias- dov steel txheej txheem:
Kub- dov coil → pickling → txias dov → annealing → tiav
Dub annealed steel: feem ntau yog cov khoom nruab nrab hauv cov txheej txheem txias dov
Txias-rolled steel: hais txog qhov kawg txias-rolled xeev lossis lub xeev ua ntej kev kho mob tom ntej (xws li galvanizing)
Dab tsi yog qhov zoo ntawm dub annealing?
1.Economical: Tsis muaj cov cuab yeej tiv thaiv huab cua yuav tsum tau ua, thiab tag nrho cov nqi tau txais kev cawmdim los ntawm 15% -25%, uas yog tsim rau cov pa roj carbon steel loj loj.
2.Process adaptability: Zoo tshem tawm txias dov hardening, restore plasticity (elongation nce mus rau 35%-45%), thiab homogenize nplej (ASTM 7-9 qib), haum rau tom qab ua xws li sib sib zog nqus nqus thiab welded kav.
3.Surface yam ntxwv: Cov nplai oxide tuaj yeem npog qhov tsis xws luag ntawm lub substrate, thiab qhov ntxhib nto tom qab pickling yog qhov zoo rau txheej adhesion.
4.Kev cia yooj yim: Cov txheej oxide muab luv luv - lub sij hawm tiv thaiv - xeb, thiab cov khoom nruab nrab tuaj yeem khaws cia rau lub sijhawm ntev.
