Q345B yog Suav qauv qis qis -}} Alloy ecoy, nruab nrab tensile lub zog steel ua los ntawm kub- rolling txheej txheem. Nws yog dav siv hauv kev tsim kho, tshuab, thiab cov cuab yeej hnyav, xws li excavator thoob, ntev pa npab, thiab lwm yam kev sib xyaw ua ke.
Cov qib steel yog muaj nuj nqis rau nws cov neeg npau taws me me, uas ua rau nws yooj yim rau daim ntawv yooj yim thiab weld, muab cov ntawv thov kev siv khoom.
Tshuaj Muaj Tshuaj
Cov pa roj carbon (c): tsawg dua lossis sib npaug rau 0.2%
Silicon (si): tsawg dua lossis sib npaug rau 0.55%
Impurities: suav nrog cov nqi ntawm cov neeg Sulphur, chromium, thiab npib tsib xee
Cov Khoom Siv Neeg Kho Tshuab
| Ntiag tug | Tus nqi |
|---|---|
| Paib lub zog | 345 MPa |
| Lub zog tensile | 470-660 MPA |
| Elongation thaum so | 20–21% |
| Hardness (HB) | Raug 130-200 Hb |
CEEB TOOM: Cov lus cog tseg muaj zog qhia qhov kev ntxhov siab ntawm Q345B pib deform plastically. Nws txoj kev txhim kho zoo thiab cuam tshuam yuav ua nws haum rau hnyav- cov phiaj xwm kev siv.
Txhawm rau kom cov ncauj lus kom ntxaws thiab kev txhawb nqa kev pab, koj tuaj yeem tiv toj Cibbon hlau muag pab pawg rau cov kev daws teeb meem.
