Zoo nyob rau hauv-tob tsab xov xwm, kev tshawb fawb ntawm annealing txheej txheem ntawm tiav lawm ultra-thin tooj liab strips
1. Taw qhia
Lub hom phiaj ntawm kev kho cua sov yog siv qee cov cua sov los hloov nws cov qauv sab hauv thiab tshem tawm cov metastable plasticity ntawm cov qauv thiab cov khoom los ntawm qhov txias deformation. Lub sawb undergoes rov qab thiab recrystallization annealing kom tau txais cov khoom uas xav tau. Cov khoom tiav annealing yog hais txog qhov kawg annealing ntawm cov khoom, uas tswj kev ua haujlwm ntawm cov khoom muag muag. Rau cov txheej txheem no, peb yuav tsum xub ua kom tau raws li ntau yam kev ua tau zoo uas cov neeg siv xav tau, thiab tib lub sijhawm, kev ua haujlwm yuav tsum zoo ib yam thiab zoo ib yam, tsis muaj khawb, tsis muaj cov khoom txawv teb chaws nias rau hauv qhov chaw, smoothness, thiab tsis muaj oxidation. Lub thickness ntawm ultra-thin tooj liab strip tau mus txog 0.05mm. Vim tias cov sawb nyias dhau lawm thiab muaj kev ntxhov siab nyob hauv, nws yog ib qho yooj yim los ua kom muaj kev sib raug zoo hauv lub tswb annealing rauv. Cov khoom tiav annealing thev naus laus zis tau dhau los ua qhov tseem ceeb hauv kev tshawb fawb thiab kev loj hlob ntawm 0.05mm ultra-thin tooj liab sawb. .
2. Ua rau kev tsom xam
Ultra-thin tooj liab strips yog nquag rau kev sib txuas thaum lub sij hawm annealing txheej txheem ntawm cov khoom tiav. Yog vim li cas rau kev sib raug zoo yog: interlayer bonding yog vim kev sib nrig sib diffusion ntawm tooj liab atoms ntawm qhov chaw ntawm ob txheej nyob ib sab ntawm tooj liab strips ntawm kub kub thaum lub sij hawm annealing txheej txheem. tshwm sim los ntawm. Qhov ntau dua qhov degree ntawm atomic diffusion, qhov loj dua qhov interlayer bonding. Qhov degree ntawm atomic diffusion yog ncaj qha ntsig txog cov txheej txheem hauv qab no:
1. Qhov loj ntawm interlayer nro
Qhov ntau dua qhov kev sib txuas ntawm qhov nro, qhov me dua qhov kev ncua deb ntawm ob txheej uas nyob ib sab ntawm tooj liab strips thiab qhov me me ntawm qhov chaw sib cuag.
Qhov loj ntawm cov khoom, qhov ntau dua ntawm kev sib nrig sib diffusion ntawm atoms thiab ntau dua cov degree ntawm diffusion; thaum lub interlayer nro me me, qhov opposite yog qhov tseeb;
2. Annealing kub thiab tag nrho annealing lub sij hawm
Qhov siab dua qhov kub ntawm qhov annealing, qhov ceev ntawm atomic diffusion, qhov ntev ntawm tag nrho cov annealing lub sij hawm, ntau dua cov atomic diffusions, thiab cov degree ntawm diffusion yog intensified; thaum lub annealing kub yog qis dua thiab tag nrho lub sij hawm annealing yog luv, qhov teeb meem yog opposite;
3. Qhov hnyav ntawm lub coil: qhov hnyav ntawm lub kauj ntau dua, qhov sib txawv ntawm qhov nro ntau dua, qhov ntev ntawm lub sij hawm annealing yuav tsum tau ntev dua, thiab qhov ntau dua qhov kev sib txuas raws li tau piav qhia hauv 1 thiab 2; thaum qhov hnyav ntawm lub kauj me me, qhov sib txawv yog qhov tseeb. .
3. Kev daws teeb meem
1. Cov xwm txheej tam sim no ntawm annealing tshuab rau tiav tooj liab strips Cua cushion nruam annealing: Qhov tsawg kawg nkaus thickness ntawm annealed strips yog 0.1mm, 0.1mm
Cov khoom siv hauv qab no nyias nyias tuaj yeem ua tsis tau raws li qhov yuav tsum tau ua; Tswb furnace annealing: hnyav annealing thiab kev sib txuas ntawm cov coils loj; hnyav annealing ntawm me me coils muaj qhov tsis zoo ntawm kev ruaj ntseg tsis zoo ntawm lub cub tawg, kev siv hluav taws xob siab, thiab tus nqi siab.
2. Raws li cov laj thawj saum toj no, tom qab ntau qhov kev ntsuam xyuas, cov kev daws teeb meem hauv qab no tau txiav txim siab los txo qhov nro: ntawm qhov chaw ua kom ntseeg tau tias cov ntug ntauwd zoo li tsis loj dua 1 hli, lub coiling nro yog tswj hauv qab 12N / mm2. ; txhawm rau txo cov kauj qhov hnyav: ntawm chav txiav txiav txiav cov yob tiav ntawm ntau tshaj 5 tons rau hauv cov yob me me uas tsis pub tshaj 500kg. Ib lub tes tsho tshwj xeeb annealing thiab rauv loading spreader tau tsim thiab tsim. Sab hauv txoj kab uas hla ntawm lub nruas steel yog 300mm.
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Tom qab ntau qhov kev sib tham thiab kev ntsuam xyuas, nws tau txiav txim siab los siv lub tshuab hluav taws xob txuas ntxiv rau qhov cub rau annealing cov khoom tiav. Cov txheej txheem annealing yog qhia hauv Table 1:
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Los ntawm kev soj ntsuam ntawm cov qauv metallographic hauv daim duab 2, nws tuaj yeem pom tau tias thaum qhov kub ntawm qhov annealing yog 360 degree, cov nplej pib loj hlob qeeb, tab sis cov qoob loo loj hlob tsis txaus. Thaum qhov kub nce mus txog 380 degree, cov nplej loj yog qhov sib xws. Hais txog lub koom haum sab hauv, qhov me me thiab ruaj khov ntawm cov nplej loj yog, qhov zoo dua qhov kev ua tau zoo tag nrho yuav yog. Yog li ntawd, ntau lub tuam txhab domestic thiab txawv teb chaws vam khom rau kev tswj cov qoob loo kom tswj tau qhov kev ua tau zoo. Thaum kub tshaj
Thaum 400 degree, lossis txawm nce mus txog 420 degree, cov nplej loj pib tsis sib xws. Qhov no yog theem uas cov nplej engulf ib leeg thiab loj hlob unevenly tom qab recrystallization, thiab lub microstructure yog uneven.
4. Cov lus xaus
Los ntawm kev tshawb fawb tob txog cov yam ntxwv ntawm cov menyuam lub qhov cub hluav taws xob annealing, cov teeb meem tseem ceeb hauv annealing thiab kev sib txuas ntawm cov strips tiav tau raug daws. Tom qab ntau qhov kev ntsuam xyuas thiab kev tshuaj ntsuam xyuas, cov txheej txheem zoo tshaj plaws tau txiav txim siab tias yog: qhov kub thiab txias 380 degree, lub sij hawm annealing 30 feeb, thiab tag nrho lub sij hawm annealing 270 feeb. Tom qab 0.05mm ultra-thin tooj liab strip yog annealed nyob rau hauv cov menyuam hearth annealing rauv, cov kev ua tau zoo tsom xam ntawm 3 randomly xaiv coils ntawm T2 thiab TU2 yog nqa tawm. Cov txiaj ntsig kev tshuaj ntsuam tau qhia hauv Table 3:
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Raws li tau pom los ntawm Table 3, qhov kev ua tau zoo kawg ntawm cov sawb tiav ua tau raws li cov qauv tsim, tsis muaj adhesion ntawm cov khaubncaws sab nraud povtseg, thiab cov resistivity tuaj yeem ua kom zoo ib yam.
