1. Kev kho cua sov rau txias- polled q355gnh daim phiaj (piv txwv li, rau boiler tshav kub sib pauv)
Txheej txheem ua ntu zus: Kub {- rolled coil ai acid pickling → Tem Tawg Nrov
Qhov Tseem Ceeb Annealing tsis (Ntsug Nruam Annealing Rauv):
Post - annealing tempering FLUPER DOV: Lub teeb rolling txheej txheem nrog ibElongation tus nqi ntawm 0.2-0.6%Txhawm rau kom muaj phaj daim duab (piv txwv li, tiaj) thiab ntxiv rau saum npoo.
2. Kev kho cua sov rau nruab nrab-} daim hlau tuab (piv txwv li rau choj, rau kev tsim kho)
Cov txheej txheem tseem ceeb: Cam khwb cia Slab cua sov kub → ob - theem tswj dov → dej txias → dej txiasSlab cov cua kub (Pretreatment):
Cua sov cov metefficition: 8-11 min / cm (ua kom muaj zog niaj hnub no cov nplais tuab).
Tawm kub: 1050-1150℃(zam dhau - hlawv thaum ua kom tiav cov ntsiab lus xws li CR, Cu).
Ob -} theem tswj dov (yuam sij rau microstructure):
Thawj theem: Ua tiav cov dov ntawm ntau dua lossis sib npaug nrog 950℃nrog qhov sib piv compression ntau dua los yog sib npaug rau 60% (tawg coarse ustenite nplej).
Ob theem ob: Pib dov tsawg dua lossis sib npaug ntawm 920 degree, ua tiav rolling ntawm 810-8 Qib rau txhim kho kev nruj thiab ua kom muaj kev tiv thaiv).
Kev Tsim Txias:
Dej txias tam sim ntawd tom qab dov, nrog aLiab rov qab txias ntawm 670-710 degree(tswj tus nqi cua txias los ua tus nplua ferrite - pumbite qauv, zam kev sib tw loj).
Tom ntej cua txias rau chav kub (tshem tawm qhov xav tau ntawm cov stacking qeeb, ua kom luv luv mus ncig).
3. Nto Reg Kev Kho Mob (rau kev ua kom zoo dua hnav tsis kam thiab nkees muaj zog)
Cov Ntsiab Lus Txheej Txheem: High {{{- zaus induction Tam sim no cov khoom siv hluav taws xob tam sim no (Austenitization), ua raws li los ntawm kev ua kom txias sai (quenching) los ua cov mosensite sai sai rau saum npoo.
Cov ntsiab lus tseem ceeb:
Cov tawv tawv saum npoo muaj zog ntxiv los ntawm 2-3 hrc piv rau cov pa hluav taws kub kom huv.
Hnav tsis kam thiab qaug zog tau txhim kho (vim tias zoo martensite nplej, muaj kev ntxhov siab carbide, thiab kev sib tw ua kom sib txawv, thiab kev ntxhov siab compressive).
Txo cov neeg tsis paub tseeb ntawm cov cheebtsam (tseem ceeb rau load - cov kabmob ib nrab {}} shafts).
4. Ua raws li cov qauv thiab cov hom phiaj tseem ceeb
Khaws Cia Cua Tiv Thaiv Tsis Tau: Ua kom cov kev tsim kom ruaj khov, ntom cov yeeb yaj kiab oxide (nplua nuj) ntawm qhov chaw kho cua sov uas rhuav tshem cov kev faib khoom siv hluav taws xob ua kom puas tsuaj.
Tshuav cov khoom siv me me: Ua tiav cov txiaj ntsig lub zog ntau dua los yog sib npaug, sib npaug ntawm 4903), thiab muaj kev sib luag ntawm 44J ntau dua lossis sib npaug ntawm -20 degree).
Haum rau Cov Khoom Muag Khoom: Cold {- rolled daim hlau tsom rau annealing rau kev ua siab loj thiab cov tiaj tiaj; nruab nrab - Cov paib tuab} tuab tuab siv tmcp rau kev ua haujlwm thiab lub zog; Nto kho cov hom phiaj nyob hauv zos hnav tsis kam.
