Txhawm rau ua kom tau raws li qhov xav tau ntawm cov neeg siv khoom, Shijiazhuang dong huan malleable hlau castings co., ltd tau tsim tshiab malleable hlau fittings. Rau cov tshuaj muaj pes tsawg leeg ntawm raw khoom peb muaj ib co ntsiab lus.
C, Si, CE thiab Mg qhov tseem ceeb ntawm cov casting yuav tsum ua tau raws li qhov tseem ceeb ntawm qhov casting. Qhov loj me me ntawm qhov casting txiav txim siab qhov txias ntawm qhov casting, thaum cov tshuaj muaj pes tsawg leeg thiab tus nqi cua txias ua ke txiav txim siab cov qauv metallographic ntawm cov khoom.
Ob leeg ferrite cam khwb cia hlau thiab pearlitic cam khwb cia hlau xav tau Si (hloov cov ntsiab lus ntawm Si txhais tau tias hloov CE) thiab MN.
Castings tuaj yeem muab faib ua ib qho ntawm ob lub substrates raws li lawv cov tshuaj muaj pes tsawg leeg, uas txhais tau hais tias muaj tsawg kawg yog plaub cov khoom xyaw kom ua tiav cov tshuaj lom neeg muaj pes tsawg leeg hauv kev tsim cov qib sib txawv ntawm nyias-walled thiab tuab-walled qhov chaw.
Nco tseg:
1. Qhov hnyav ntawm ntau yam khoom xyaw tuaj yeem xam los ntawm kev sib npaug ntawm qhov hnyav ntawm cov hlau molten uas tsim los ntawm % % ntawm cov khoom xyaw ntxiv.
2. Cov ntsiab lus ntawm MN yog txhob txwm tshaj tawm nyob rau theem qis, vim tias nyob rau hauv ferrite nodular hlau, txawm tias cov ntsiab lus qis, nws tuaj yeem txhawb kev tsim cov pearlite, hauv pearlite, siab MN cov ntsiab lus yog ib qho yooj yim los ua kom muaj kev sib cais ntawm MN hauv pearlite, siv Cu los ua hardness kom tau raws li qhov yuav tsum tau ua ntej yog qhov kev xaiv zoo dua.
3. Silicon carbide tuaj yeem muab ntxiv kom txo tau cov hlau oxidation thiab tiv thaiv lub tshuab hluav taws xob hauv ob sab phlu (cov nqi ntxiv yog 0.2%), nws tuaj yeem ua si ib feem ntawm qhov nce hauv C thiab silicon nyhuv.
4. Tus nqi nqus feem ntau yog rau C thiab Si.
Post lub sij hawm: Mar-08-2022