Annealed tsis yog lub xeev tus qauv xa khoomrau SPA-H steel daim hlau raws li JIS G 3125; lub neej ntawd yog kub- dov (raws li - dov, AR) los yog tswj- dov (TMCP) rau kub- dov daim hlau, thiab txias- dov (CR) rau nyias strips. Annealing yog ib txoj kev xaiv, tsis yog tus qauv.
◎Txoj kev xa khoom xa tuaj rau SPA-H Steel Phaj
Kub-rolled SPA-H daim hlau
Lub mainstream shipping xeev yograws li -rolled (AR)los yogThermo{0}} txheej txheem tswj kev tswj hwm (TMCP). Nyob rau hauv raws li - dov lub xeev, cov hlau tau dov saum toj no lub recrystallization kub thiab ces ntuj txias, tsim ib tug ruaj khov ferrite - pearlite microstructure. Lub xeev no ua kom muaj kev sib npaug ntawm cov khoom siv kho tshuab (yield zog ntau dua lossis sib npaug ntawm 235 MPa, elongation Ntau dua lossis sib npaug li 22%) uas ua tau raws li cov kev cai yooj yim ntawm kev siv sab nraum zoov, xws li cov cim qhia, guardrails, thiab ntim khoom. Lub xeev TMCP, ua tiav los ntawm kev tswj cov dov thiab txias, ntxiv cov nplej loj thiab txhim kho lub zog thiab tawv yam tsis muaj kev kho cua sov ntxiv. Ob qho tib si li - dov thiab TMCP lub xeev yog tus nqi - zoo thiab tsis cuam tshuam nrog kev sib tsoo, ua rau lawv xaiv qhov kev xaiv rau feem ntau ntawm kev lag luam xaj.
Txias- dov SPA-H strips/plates
Lub xeev tus qauv xa khoom yogtxias- dov (CR)tsis muaj annealing. Txias dov yog ua nyob rau hauv chav tsev kub siv kub - dov SPA-H raws li cov khoom siv hauv paus, uas ua rau cov yas deformation thiab ua hauj lwm hardening ntawm cov hlau. Cov txheej txheem no txhim kho qhov ua tiav ntawm qhov kawg thiab qhov tseeb ntawm cov phaj steel tab sis nce hardness thaum me ntsis txo ductility. Lub txias txias -rolled xeev yog haum rau daim ntaub ntawv uas yuav tsum tau nyias gauge (0.3-3 hli) thiab meej shaping, xws li hniav panels thiab me me precision Cheebtsam.
◎ Annealing raws li kev kho mob
Annealing dhau los ua cov txheej txheem xaiv tau tsuas yog thaum cov neeg siv khoom muaj kev ua tau zoo lossis kev ua tiav. Hom annealing ntau rau SPA-H steel phaj suav nrog:
Tag nrho annealing: Cua sov cov hlau mus rau 850-900 degree, tuav nws rau lub sijhawm txaus, thiab tom qab ntawd maj mam txias. Qhov no tshem tawm kev ua hauj lwm hardening los ntawm txias dov, softens cov khoom, thiab restores ductility, ua rau nws yooj yim dua rau tom qab khoov, stamping, los yog vuam txheej txheem.
Txheej txheem annealing: Ib qho qis -kub annealing (550–650 degree) siv rau txias -rolled SPA-H los txo cov kev ntxhov siab sab hauv yam tsis muaj qhov txo qis zog, uas yog tsim rau cov khoom uas xav tau kom muaj qhov sib npaug ntawm hardness thiab formability.
Nws yuav tsum tau muab sau tseg tias thov kev kho annealing yuav ua rau kom cov nqi ntau lawm thiab ncua lub sij hawm xa tuaj, raws li nws ntxiv ib qho kev kho cua sov ntxiv rau cov txheej txheem ntau lawm. Yog li ntawd, nws yuav tsum tau qhia meej meej hauv daim ntawv cog lus yuav khoom.
● Cov Lus Cim Tseem Ceeb ntawm Kev Xaiv Lub Xeev
Rau kev thauj khoom sab nraum zoov dav dav -cov kabmob (xws li, cov cim qhia loj, cov qauv steel), tus qauv raws li - dov los yog TMCP kub-rolled SPA-H yog txaus thiab tsis tas yuav tsum tau annealing.
Rau txias -rolled SPA-H siv nyob rau hauv precision processing (xws li, zoo nkauj kos npe panels uas yuav tsum tau complex dabtsi yog khoov), annealing yuav tsum tau teev los txhim kho formability thiab tsis txhob tawg thaum lub sij hawm ua.
Lub xeev annealing yuav cuam tshuam rau patina tsim ceev ntawm SPA-H steel: annealed nto yog huv si thiab ntau dua, uas yuav pab tsim kom muaj kev tiv thaiv patina sai dua nyob rau hauv ib puag ncig sab nraum zoov.
