Txheej txheem kev kawm ntawm oriented hluav taws xob steel
1. Kev lag luam ntawm cov nplej-taw qhia cov hluav taws xob hlau ib txwm siv cov txheej txheem kub kub rau cov slabs los xyuas kom ruaj khov siab hlau nplaum. Txawm li cas los xij, qhov tsis zoo yog tias muaj ntau cov oxide slag, qhov kub hnyiab tuaj yeem ncav cuag 5%, thiab tus nqi tawm los tsawg; lub cub tawg hauv qab yuav tsum tau ntxuav tas li, uas txo cov zis. ; Cov nqi roj siab; lub neej luv luv; cov nqi tsim khoom siab; ntau yam khoom nto tsis xws luag. Kev sim txo cov cua kub ntawm cov cam khwb cia slabs tau ua rau ntau xyoo. Tam sim no, muaj ntau txoj hauv kev hauv qab no: hloov Si nrog Mn, ntxiv Cu thiab nitriding, thiab lwm yam. High manganese hluav taws xob steel hloov ib feem ntawm Si nrog Mn thiab ntxiv ib qho kab ntawm Al raws li ib qho inhibitor, uas tuaj yeem txo cov slab cua sov kub. , txo qhov kub annealing ntawm cov khoom kawg thiab tshem tawm cov txheej txheem decarburization annealing. Xyoo 1989, Yuki Yabu thiab lwm tus los ntawm Sumitomo Hlau Corporation ntawm Nyij Pooj tau thov ib qho tshiab carbon-free Si-Mn hluav taws xob hlau uas yooj yim rau txheej txheem. Nyob ib ncig ntawm 1995, Yasunari Yoshitomi thiab lwm tus los ntawm Nippon Steel Corporation kuj tau kawm hom tshiab ntawm Si-Mn hluav taws xob hlau. Mn hlau. Nyob rau hauv xyoo tas los no, Nyiv tau kawm txog cov hlau tshiab no. Lwm txoj hauv kev los txo cov slab cua sov yog ntxiv Cu rau hluav taws xob hlau. Cu muaj ntau yam cuam tshuam rau cov khoom ntawm cov nplej-taw qhia txog hluav taws xob hlau, ib qho ntawm nws lub luag haujlwm tseem ceeb yog los ua tus pab cuam inhibitor thiab txo qhov kub ntawm lub slab. Qhov thib peb txoj hauv kev los txo qhov kub ntawm qhov kub yog nitriding tom qab decarburization annealing. Nippon Steel Corporation tau ua haujlwm tshawb fawb hauv cheeb tsam no. Tsis ntev los no, Ste-fano Fortunati thiab lwm tus los ntawm Terni Lub Tuam Txhab hauv Ltalis tau thov ib txoj hauv kev los tsim cov hlau nplaum sib nqus induction oriented hluav taws xob siv CSP (Compact Strip Production) txheej txheem thiab cov txheej txheem nitriding.
2. Siv nyias slab nruam nruam casting thiab dov thiab nyias strip casting thiab dov txheej txheem los tsim cov nplej-taw qhia txog hluav taws xob hlau
Nrog rau txoj kev loj hlob ntawm lub ntiaj teb kev lag luam, tshwj xeeb tshaj yog tsav los ntawm Suav kev lag luam, lub ntiaj teb kev tsim khoom thiab kev siv hluav taws xob hlau tau nce xyoo los ntawm xyoo. Nyob rau tib lub sijhawm, txhawm rau txo tus nqi ntawm cov khoom siv hluav taws xob thiab cov khoom siv, cov tuam txhab tau them nyiaj ntau dua rau kev txhim kho thiab kev tshawb fawb ntawm cov khoom siv hluav taws xob uas tsis muaj nqi, kev ua haujlwm siab tshiab. Kev tshawb fawb hauv tsev thiab txawv teb chaws tau pib tsim cov nplej-taw qhia cov khoom siv hluav taws xob steel ntau lawm hauv cov txheej txheem luv luv, tus nqi qis, thiab kev ua haujlwm siab ntawm nyias slab nruam casting thiab dov. Nyias slab nruam nruam casting thiab dov tshuab yog ib tug tshiab luv luv txheej txheem, uas tsis muaj nqi hlau metallurgical ntau lawm technology. Tuam Tshoj tau ua tiav kev txhim kho thiab kev tshawb fawb ntawm nyias slab nruam casting thiab dov tshuab los tsimnon-oriented hluav taws xob steel. Yog hais tias nyias slab nruam nruam casting thiab dov txheej txheem yog siv los tsim cov khoom siv hluav taws xob dav dav, nws yuav tsis tsuas yog txo cov kev nyuaj ntawm kev txhim kho thiab kev tshawb fawb, tab sis kuj ua tau raws li cov kev xav tau ntawm cov khoom sib txawv thiab qib.
Nyias sawb casting thiab dov tshuab ncaj qha cam khwb cia thiab yob molten steel rau hauv kub dov coils ntawm 2 mus rau 3 hli, uas yuav txo cov txheej txheem ntws. Nyob rau hauv cov txheej txheem no, lub sij hawm-kub kev sib raug zoo yog qhov tseem ceeb tshaj plaws, vim hais tias tus inhibitor yuav tsum tau precipitated los ntawm crystallizer qhov hluav taws xob mus rau lub winding tshuab nyob rau hauv li 1 feeb. Los ntawm kev tswj cov cua txias thiab deformation hauv internet, uniformity yuav tau txais ntawm inhibitors. Txhawm rau kom ruaj khov thiab txhim kho cov xwm txheej ntawm inhibitor, normalization yuav tsum tau ua. Txhawm rau kom tau txais txiaj ntsig zoo dua thiab ua haujlwm txias ua haujlwm zoo ntawm cov hlau sawb, cov hlua hlau tuaj yeem raug kho kom sov hauv online. Nyob rau hauv cov nqe lus ntawm sawb puab, thickness kam rau ua thiab nto defects, tseem muaj chaw nyob rau hauv-tob txoj kev loj hlob thiab kev tshawb fawb.
3. Nruam annealing ntawmtaw qhia hluav taws xob hlauhloov tswb annealing
Hloov lub tswb annealing rauv nrog lub tshuab hluav taws xob txuas ntxiv kom ua tiav theem nrab recrystallization thiab purify inhibitors hauv steel tau dhau los ua ib qho tseem ceeb rau kev tsim high-end oriented hluav taws xob hlau. Cov txheej txheem annealing no tsuas siv feeb xwb tsis yog hnub, txo cov sij hawm annealing. High-temperature nruam annealing tsis tsuas yog muaj cov zis siab, tab sis kuj tuaj yeem txuag hluav taws xob ntau dua 20%. Nruam annealing units yog tsim los ntawm kev kub ceev thiab multi-function.