Cov khoom siv dab tsi yog Stk 400 Erdw Yeeb Nkab
Stk400 Hluav Taws Xob Hluav Taws Xob Welded Welded Yeeb Nkab yog cov hlau txheem steel yeeb nkab uas ua raws li cov qauv kev lag luam Japanese (JIS).
Dab tsi yog cov khoom siv tshuab ntawm stk400 hluav taws xob tiv thaiv welded yeeb nkab?
Cov cuab yeej ua haujlwm ntawm STK400 tau raws li cov cai ntawm JIS cov qauv:
- Tensile lub zog: ntau dua lossis sib npaug nrog 400 MPA, uas tuaj yeem ua tau raws li cov kev coj ua ntawm cov qauv dav dav.
- Tawm lub zog: ntau dua los yog sib npaug rau 245 MPa, muab cov nyom tsis ruaj khov.
- Elongation: ntau dua los yog sib luag rau 17%, qhia tau tias cov khoom muaj peev xwm zoo, muaj peev xwm ua tau zoo yas ua ntej kev cuam tshuam thiab tuaj yeem hloov kho kom haum lossis kev co kom haum rau ib puag ncig.
Tsis tas li ntawd, nws brinell hardness (HB) feem ntau yog nyob rau hauv ntau ntawm 120-160, ntsuas kev coj tsis kam thiab ua kom yooj yim.
Dab tsi yog qhov sib txawv ntawm Stk400 thiab SS400?
SS400: kub-rolled steel phaj / profile, nrog tib lub zog tensile ntawm 400Mpa, tab sis STK400 yog hais txog hluav taws xob vemes (ERW kav);
Cov txheej txheem sib txawv: STK400 siv high-zaus tiv thaiv vuam rau yob thiab weld steel strips rau hauv cov kav dej, thaum SS400 yog lub phaj dov.
