Hauv cov txheej txheem ntau lawm ntawm cov hlau, kub dov thiab dov tawm yog ob qho kev ua tiav txoj kev ua cov txheej txheem. Lawv muaj feem cuam tshuam rau lub koom haum thiab cov khoom ntawm cov hlau. Lub hom phiaj ntawm tsab xov xwm no yog los tham txog qhov sib txawv ntawm ob txheej txheem no hauv qhov tob thiab pab nyeem kom nkag siab zoo dua lawv cov ntawv thov thiab cov khoom.
Ua ntej, cov txheej txheem kub kub dov
Kub dov, raws li lub npe qhia, yog cov txheej txheem dov hauv tus hlau rhaub kom sov rau lub xeev kub. Feem ntau, lub ingot lossis billet yuav tau rhuab rau 1100 degree ~ 1250 degree kub ntau, ua raws li dov hauv zeb. Lub txiav kom sov ntawm kub dov yog feem ntau tswj hwm ntawm 800 degree rau 900 degree, tom qab uas cov steel yog txias nyob rau hauv huab cua.
Lub saum npoo ntawm kub dov steel yuav tsim ib txheej ntawm cov hlau oxide, yog li nws tuaj yeem khaws cia rau hauv cov pa hluav taws xob, tab sis kuj ua rau lub ntsej muag muaj ntsis thiab loj dua. Yog li ntawd, rau cov steel nrog high li siab rau saum npoo thiab qhov khoob yog qhov tseeb yog feem ntau nqa tawm ntawm cov khoom siv kub lossis ua tiav cov khoom lag luam.
Qhov zoo ntawm kub dov xws li kev tsim nrawm nrawm, thiab muaj peev xwm ua tau ntau cov qauv ntawm cov hlau uas tsis muaj txheej txheem. Tsis tas li ntawd, kub dov yuav ua rau nce cov txiaj ntsig ntawm cov hlau thiab txhim kho nws cov khoom siv neeg.
Thib ob, cov txheej txheem dov txias
Tsis zoo li kub dov, txias dov yog cov txheej txheem siv hlau siv hauv chav tsev kub. Txawm hais tias lub phaj steel yuav ua kom sov thaum lub sijhawm ua, tab sis kub tshaj plaws tseem nyob hauv qis dua. Txias zog dov yog feem ntau kub rolled steel chev li cov khoom siv roj, tom qab siv cov tawv nqaij oxide, hauv cov tshuab dov, thiab thaum kawg tau dov lub kauj.
Txias rolled steel muaj qhov siab ua kom tiav thiab ib qho kev xav du, uas yog vim yog tus txheej txheem pickling. Nyob rau tib lub sijhawm, lub zog thiab hardness ntawm txias rolled steel kuj tseem muaj ntau, nrog siv tau zoo, yog li nws tau siv lub tshuab zoo, yog li nws tau siv hauv tsev, cov khoom siv hauv tsev thiab kev kho vajtse.
Lub ntsiab kom zoo ntawm lub txias rolling yog tias nws tuaj yeem rhuav tshem lub chaw ua haujlwm sib xws ntawm cov microstructure, yog li kev txhim kho cov khoom siv me me ntawm cov hlau. Tsis tas li ntawd, dov txias tuaj yeem rau qee qhov tshem tawm qhov tsis xws luag xws li npuas, kab nrib pleb thiab looseness tsim thaum lub sijhawm ua.
Thib peb, qhov sib txawv ntawm kub dov thiab txias dov
1. Qhov kub sib txawv: kub dov ntawm qhov kub thiab txias, thaum txias dov lawm tau ua tiav ntawm chav tsev kub. Qhov no yog qhov sib txawv tshaj plaws ntawm ob qho txheej txheem.
2. Cov saum npoo av zoo: khaub thuas dov steel nto tas yog siab, thaum lub kub dov steel yog qhov ntxhib.
3. Kev ua txujci cov yam ntxwv: Cov txiaj ntsig tau tawm ntawm kub siv kub yog siab dua, tab sis lub zog thiab hardness ntawm txias rolled steel yog siab dua. Ib qho ntxiv, cov qauv tsim ntawm cov hlau txias cov hlau yog zoo dua rau cov ntawm kub dov steel.
Zuag qhia tag nrho, kub dov thiab txias yob thiab cov yam ntxwv txias muaj lawv tus cwj pwm uas muaj kev xav tau ntawm daim ntawv thov thiab cov kev xav tau ntawm cov hlau. Los ntawm kev nkag siab txog qhov sib txawv thiab cov yam ntxwv ntawm ob qho txheej txheem no, peb tuaj yeem xaiv cov hlau zoo dua rau txoj haujlwm.
