Cia peb saib ntawm cov txheej txheem anealing tshwj xeeb.
Annealing yog cov txheej txheem tseem ceeb hauv kev siv cua sov, tuav cov khoom siv cua sov thiab cov khoom (piv txwv li kev nyuaj siab, thiab cov nplej zom). Annealing cov txheej txheem sib txawv raws li cov khoom (piv txwv li, steel, txhuas alloy) thiab appinate (piv txwv li, softening tom qab dov tawm). Cov kev siv hauv qab no Recrystallization analing ntawm txias txias {8} Hais cov qauv hlau (feem ntau los muab cov ncauj lus piav qhia ntxaws ntxaws ntawm cov txheej txheem tshwj xeeb:
1. Ua ntej - annealing npaj
Kev Soj Ntsuam Cov Khoom Siv Raw: Paub meej cov khoom (piv txwv li, qis} Cov roj carbon steel), pub dawb}}} polled steels kom tsis txhob muaj qhov tsis xws luag thaum cua sov. Cov ntaub ntawv yog tom qab ntawd ua tiav hauv cov kab ke raws li cov sijhawm tsim khoom.
Kev ntsuas chaw thau khoom: thauj cov khaub thuas - rolled steel ntawv (feem ntau yog cov nplooj ntawv txuas ntxiv) rau hauv kev txuas ua kom nrawm dua hluav taws xob los yog lub thawv txuas txuas rau qhov cub tawg. Nruam annealing rauv yog haum rau loj {2} teev ntau lawm, nrog cov ntawv hlau txuas ntxiv mus rau ntawm cov menyuam conveyor. Lub thawv annealing rauv yog haum rau me me batches, nrog workpieces muab tib yam nkaus xwb, thiab yuav tsum tau ua kom sov nyob rau hauv lub cub tawg. Rauv taws cua Contrigphere Control:
Txhawm rau cov ntaub ntawv yooj yim xws li cov cua tiv thaiv me me (xws li cov nitrogen + hydrogen cov ntsiab lus ntawm 5% thiab kom txo tau cov kab ntawv sib xyaw ua ke (feo to fe) uas yuav muaj nyob rau saum npoo.
Lub lwg taw tes ntawm cov huab cua tiv thaiv yuav tsum tau nruj me ntsis kev tswj hwm (feem ntau tsawg dua lossis sib npaug lossis sib npaug ntawm cov dej noo los ntawm kev nkag noo thiab ua rau oxidation.
2. Cua Kub Theem
Kev tswj cua sov: Tus nqi cua sov yuav tsum tau teeb tsa raws li cov khoom tuab thiab cov cua sov (feem ntau 5-20℃/ min). Zam kev ua cua sov ntau dhau, uas tuaj yeem ua rau muaj qhov sib txawv loj ntawm sab hauv thiab sab nraud ntawm kev ua haujlwm lossis kev tawm tsam (tshwj xeeb).
Cua sov kub: ncav cuag cov recrystallization kub (kwv yees li 650- 720℃rau cov hlau me me, kho raws cov ntsiab lus carbon). Lub recrystallization kub yog qhov tseem ceeb rau kev muag muag txias-rolled steel los xij. Thaum lub sij hawm dov tawm, yas deformation tsim ntau qhov kev cuam tshuam ntau (ua haujlwm hnyav). Thaum rhuab saum cov recrystallization kub, cov kev tsis txaus siab no ploj, thiab cov ntaub ntawv rov qab ua nws cov plasticity, txo nws lub hardness.
Cov ris tsho kub: Cov khoom siv cua sov nyob rau hauv cov cub hluav taws xob (xws li cov xov hluav taws xob thiab cov xov hluav taws xob tsis sib xws rau hauv ± 5℃kom tsis txhob muaj kev ua haujlwm hauv zos.
III. Tuav Theem
Lub sijhawm sib tuav tau teeb tsa raws li cov ntawv hlau tuab thiab hom phiaj ua tau zoo, feem ntau xws li 1 txog 4 teev (cov tuab tuab, lub sijhawm siv sijhawm ntev dua). Lub hom phiaj yog tso cai rau kev hloov pauv tiav ntawm microstructure sab hauv ntawm cov steel ntawv:
Cov nyom "nplej zom" tom qab siv txias txias tau hloov pauv rau hauv "equiaeved recrystallized nplej," tshem tawm ua haujlwm tawv;
Tso cai rau kev sib txawv ntawm kev sib txawv ntawm cov ntsiab lus xws li cov pa roj carbon thiab nitrogen thoob thaj tsam zeb, txo cov kev ntxhov siab sab hauv.
Kev Txij Nkawm Kev Tiv Thaiv Kev Tiv Thaiv yog cov tswv yim tiv thaiv tam sim no hauv kev tuav theem kom muaj qhov sib txawv ntawm lub rauv taws (tiv thaiv cua infiltration) thiab xyuas kom muaj kev ywj pheej ntawm oxidation. IV. Cua txias theem
Cov txheej txheem cua txias: tus nqi cua txias yog xaiv raws li kev ua tsis tau. Recrystallization annealing feem ntau siv qeeb cua txias (rhuab txias lossis tswj txias txias) kom tsis txhob txias lossis kev hloov pauv tshiab (xws li martensitic hloov).
Hauv qhov txuas txuas ntxiv hluav taws xob, cov phaj steel tau txias txias los ntawm cov dej txias lossis cov pa txias ntawm qhov muaj kwv yees li 5-10 qib / min.
Box -} Hom annealing rauv taws tuaj yeem muab rhaub nrog cov cua sov ua kom txias, tso cai rau kev ua haujlwm txias rau hauv qab no 200℃ua ntej tshem tawm.
Kawg txias txias: lub workpiece yuav tsum txias rau hauv qab no 200 degree) ua ntej tshem tawm oxidation los tiv thaiv oxidation los tiv thaiv kev kub siab thaum muaj huab cua.
V. Post - annerting kev kho mob
Performance Testing: Samples of steel plates are tested for hardness (eg, Vickers hardness HV) and elongation (eg, δ5) to confirm whether softening requirements are met (eg, the hardness of cold-rolled low-carbon steel is approximately 150 HV, which is reduced to 80-100 HV after annealing, while the elongation increases from 20% to over 30%). Kev soj ntsuam sab deg: saib xyuas qhov chaw tshwm sim xws li oxidation discoloration thiab pitting kom ntseeg tau tias qhov ua tau zoo ntawm kev tiv thaiv kev tiv thaiv.
Cov txheej txheem tom ntej: annealed steel ntawv tuaj yeem mus ncaj qha rau cov txheej txheem tom ntej (xws li galvanizing lossis stamping). Nyob rau theem no, cov khoom ua pov thawj zoo yooj yim yas thiab tsis tshua muaj kev ntxhov siab, ua rau tsawg dua raug rau tawg thaum ua.
Cov Ntsiab Lus Tseem Ceeb: Qhov ntsuas kub thiab sijhawm thiab sijhawm kub lossis luv luv lossis luv luv lub sijhawm tiv thaiv kev ua kom rov ua haujlwm, ua rau muaj cov khoom siv nyuaj thiab loj. Kev ntsuas kub ntau dhau los yog lub caij nyoog tuav lub sijhawm ua hauv cov noob coarsearsarsarse thiab txo qis.
Kev tswj cov cua: lub purity thiab lwg taw qhia txog cov chaw tiv thaiv yog qhov kev tiv thaiv cov nplooj ntawv hlau uas yuav tom qab sgcc substrates). Oxidation tuaj yeem ua rau cov tsis zoo zinc nplaum.
Cov txheej txheem rau hom sib txawv (xws li kev nyuaj siab annealing thiab spheiding annealing) sib txawv me ntsis, tab sis cov tseem ceeb- txias "kom ua tiav cov phiaj xwm.