Cam khwb cia hlau yog ib lo lus dav dav rau hlau-raws li alloys siv los tsim cov castings uas tsis dhau eutectic transformation thaum solidification. Ib hom cam khwb cia hlau. Lub ntsiab alloying ntsiab ntawm cam khwb cia hlau yog hlau thiab carbon raws li cov ntsiab lus tseem ceeb, thiab cov ntsiab lus carbon yog 0-2%. Cam khwb cia hlau tau muab faib ua peb pawg: cam khwb cia carbon steel, cam khwb cia hlau tsis tshua muaj hlau thiab cam khwb cia tshwj xeeb steel.
1. Cam khwb cia carbon hlau. Cam khwb cia hlau nrog carbon ua lub ntsiab alloying caij thiab me me ntawm lwm cov ntsiab lus. Casting low carbon steel nrog cov ntsiab lus carbon tsawg dua 0.2%, casting nruab nrab carbon steel nrog cov ntsiab lus ntawm 0.2% mus rau 0.5%, thiab casting siab carbon steel nrog cov ntsiab lus carbon ntau dua 0.5%. Nrog kev nce ntawm cov ntsiab lus carbon, lub zog thiab hardness ntawm cam khwb cia carbon steel nce. Cam khwb cia carbon steel muaj lub zog siab, plasticity thiab toughness, thiab tus nqi qis. Nws yog siv rau hauv cov tshuab hnyav los tsim cov khoom uas dais hnyav, xws li dov zeb stands, hydraulic xovxwm bases, thiab lwm yam. Cov khoom uas tseem cuam tshuam xws li bolsters, sab ncej, log thiab couplers.
2. Cast low alloy steel. Cam khwb cia hlau uas muaj alloying ntsiab xws li manganese, chromium, thiab tooj liab. Tag nrho cov ntsiab lus ntawm alloying feem ntau tsawg dua 5%, uas muaj kev cuam tshuam ntau dua toughness thiab zoo mechanical zog los ntawm kev kho cua sov. Casting low alloy steel muaj kev ua tau zoo dua li carbon steel, uas tuaj yeem txo qhov zoo ntawm qhov chaw thiab txhim kho lub neej kev pab cuam.
3. Cam khwb cia hlau tshwj xeeb. Alloy cam khwb cia hlau ua kom tau raws li cov kev xav tau tshwj xeeb muaj ntau yam, feem ntau muaj ib lossis ntau lub ntsiab lus siab kom tau txais qee yam khoom tshwj xeeb. Piv txwv li, siab manganese hlau uas muaj 11% mus rau 14% manganese yog resistant rau tej yam hnav thiab feem ntau yog siv rau hnav-resistant qhov chaw ntawm mining machinery thiab siv machinery; ntau yam stainless hlau nrog chromium los yog chromium-nickel raws li lub ntsiab alloying ntsiab yog siv nyob rau hauv corrosion los yog 650 yam uas ua hauj lwm nyob rau hauv lub kub kub tej yam kev mob saum toj no ℃, xws li tshuaj valve lub cev, twj tso kua mis, ntim los yog chav turbine casings ntawm loj-muaj peev xwm fais fab nroj tsuag.
