Ntawm cov txheej txheem ntau txheej txheem, cov hlau tsis muaj txheej txheem ntau yog los ntawm kev tso peev casting lossis ploj ciab casting txheej txheem, vim tias nws muaj qhov tseeb ntau dua qhov tseeb thiab vim li cas cov peev txheej peev kuj tseem muaj npe precision casting.
Stainless hlau yog qhov luv ntawm stainless thiab acid-resistant hlau. Nws hu ua stainless hlau uas tiv taus cov tsis muaj zog corrosive media xws li huab cua, chav, thiab dej. Corrosion steel yog hu ua acid-resistant steel.
Vim tias qhov sib txawv hauv cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov dog dig stainless hlau thiab acid-resistant steel, lawv qhov kev txhim kho corrosion yog qhov sib txawv. Ordinary stainless hlau feem ntau tsis tiv taus tshuaj xeb, thaum cov kua qaub-resistant hlau feem ntau tsis xeb. Lo lus "stainless hlau" tsis tsuas yog hais txog ib hom ntawm cov hlau tsis huv, tab sis kuj tseem hais txog ntau tshaj li ib puas ntawm cov qib steel hlau. Txhua tus hlau stainless tsim muaj cov kev ua tau zoo hauv nws daim teb thov tshwj xeeb.
Stainless hlau feem ntau muab faib ua martensitic stainless hlau, ferritic stainless hlau, austenitic stainless hlau, austenitic-ferritic (duplex) stainless hlau thiab nag lossis daus hardness stainless hlau raws li lub xeev microstructure. Tsis tas li, raws li cov ntawv sau tshuaj lom neeg, nws tuaj yeem faib ua chromium stainless hlau, chromium nickel stainless hlau thiab chromium manganese nitrogen stainless hlau, thiab lwm yam.
Hauv kev ua cov khoom lag luam, feem ntau ntawm cov hlau nplaum castings yog ua tiav los ntawm kev siv peev casting. Qhov txheej saum npoo ntawm cov hlau stainless castings tsim los ntawm peev casting yog smoother thiab qhov tseeb ntawm qhov ntev yog qhov yooj yim los tswj. Yog lawm, tus nqi ntawm kev nqis peev casting stainless hlau qhov chaw yog tus nqi heev dua piv rau lwm cov txheej txheem thiab cov ntaub ntawv.
Peev casting, tseem hu ua precision casting lossis poob ciab casting, yog dav siv raws li nws muab cov asymmetrical casting nrog cov ntsiab lus zoo heev los tsim cov khoom pheej yig. Cov txheej txheem cuam tshuam nrog tsim cov hlau casting siv refractory pwm ua los ntawm cov qauv siv quav ciab. Cov kauj ruam muab kev koom tes hauv cov txheej txheem lossis cov poob ciab casting yog:
• Tsim cov qauv ciab lossis rov ua dua
• Caws cov qauv ciab
• Tshawb cov qauv ciab
• Tshem tawm cov qauv ciab los ntawm hlawv nws (hauv qhov cub lossis hauv dej kub) kom tsim pwm.
• Yuam cov hlau molten nchuav rau hauv cov pwm
• Txias thiab ua kom pom tseeb
• Tshem tawm ntawm cov tawm suab
• Ua kom tiav thiab txhuam cov peev txheej tiav
Lub sij hawm tshaj tawm: Lub Ib Hlis-06-2021