Qhov saum npoo Rockwell hardness ntawm annealed tiaj carbon steel feem ntau yog 55+-3, thiab hardness ntawm unannealed hard-dov-dov-dov-dov strip steel yog siab tshaj 80. Cold-dov sawb thiab daim ntawv feem ntau muaj ib tug tuab ntawm 0.1-3mm thiab ib tug dav. 100-2000mm; ob leeg yog ua los ntawm kub-kuav los tiag sawb los yog steel phaj. .
CRS yog lub ntsiab lus ntawm lus Askiv txias dov hlau, uas yog, txias dov hlau. Nws hais txog cov txheej txheem dov ntawm cov hlau. Piv txwv li, q235 zoo tib yam carbon steel phaj tuaj yeem txias dov, thiab 10 # steel phaj kuj tuaj yeem txias dov. Nws hardness tuaj yeem ua raws li tus qauv siv raws li qib steel siv. .
Dab tsi yog qib ntawm cov ntawv txias-dov nyuaj dua spcc? .
Cold-rolled sheet yog cov ntawv luv ntawm cov qauv carbon steel txias-kuav los tiag ntawv, tseem hu ua cov ntawv txias-dov, feem ntau hu ua cov ntawv txias-dov, thiab qee zaus sau yuam kev ua ntawv txias-dov. Cov phaj txias yog ua los ntawm cov pa roj carbon zoo tib yam steel kub-kuav los tiag steel sawb, uas yog ntxiv txias dov rau hauv cov hlau nrog lub thickness tsawg dua 4 hli. .
Daim ntawv txias-dov tau muab faib ua: 1/8 nyuaj, 1/4 nyuaj, 1/2 nyuaj thiab tag nrho lub xeev nyuaj. Feem ntau muaj ob lub ntsiab tseem ceeb ntawm tus nqi hardness: HRB (Rockwell) HV (Vickers) raws li hauv qab no: Cov cim zoo sib txawv HRB (Rockwell) HV (Vickers) 1/8 nyuaj. .
Pickling phaj yog lub phaj kub-dov uas raug rau cov txheej txheem xws li dephosphorization (tshem tawm ntawm xeb, residues, thiab lwm yam., ua thaum kub dov) thiab lwm yam txheej txheem rau pickle saum npoo kom tau lub phaj steel nrog kev ua tau zoo dua li kub. - yob nto. Nws tuaj yeem pom los ntawm nws cov txheej txheem tsim khoom uas nws qhov hardness yog kub dov nrog tib qib. .
Tsis muaj qhov sib txawv ntawm qhov tawv tawv ntawm qhov txias-dov thiab galvanized. Vim tias qhov chaw galvanized tsuas yog plated nrog ib txheej ntawm zinc los ntawm ob peb microns mus txog 20 microns ntawm lub substrate. Cov substrates feem ntau yog txias-kuav los tiag thiab kub dov. Lub hardness feem ntau yog nyob ntawm qib ntawm cov khoom, thiab cov qib sib txawv. .
Siv DC01, DC03 ua piv txwv. DC01 sab sauv txwv tsis pub muaj zog 280 DC03 sab sauv txwv ntawm cov khoom muaj zog 240, dc06+ze, lawv sib raug rau cov ntawv txias-dov, tus lej sawv cev rau qib stamping, thiab tus lej loj dua.
Cov ntawv txias-dov yog ua los ntawm kub-kuav los tiag cov khoom siv raw, dov ntawm chav tsev kub hauv qab qhov kub ntawm recrystallization, thiab nws hardness yog li ntawm 150HV. Lub tshuab txiav tshuab feem ntau yog ua los ntawm cov cuab yeej hlau, nrog lub hardness ntawm HRC55 ~ 58 °, uas tuaj yeem txiav lawv feem ntau.
