Kev nqis peev casting pwm tuaj yeem muab faib ua ob hom: pwm pwm thiab ntau- txheej plhaub pwm.
Tom qab cov pwm yog coated nrog ib tug refractory txheej, granular refractory khoom yog sprinkled on to top, ua raws li los ntawm qhuav thiab hardening. Cov txheej txheem no rov ua dua ntau zaus kom txog thaum cov txheej txheej refractory nce mus txog qhov xav tau tuab, yog li ua rau ntau- txheej txheej ntawm cov pwm. Feem ntau, nws yog sab laug kom tawv rau ib lub sij hawm ua ntej cov pwm yuav yaj, uas ua rau ntau - txheej plhaub.
Qee qhov ntau- txheej plhaub xav tau xuab zeb sau; lwm tus ua tsis tau thiab tuaj yeem tso ncaj qha tom qab tua hluav taws.
Thaum lub sij hawm melting thiab pouring ntawm peev pwm, lub plhaub yog raug rau lub siab ntawm molten pwm khoom, uas yog nce nyob rau hauv ntim. Thaum tua hluav taws thiab nchuav, qhov sib txawv ntawm lub plhaub tau txais kev nthuav dav thiab kev cog lus tsis sib xws, uas tuaj yeem ua rau siab -kub tshuaj tiv thaiv ntawm cov hlau thiab cov khoom siv plhaub. Yog li ntawd, lub plhaub muaj qee yam kev ua tau zoo, xws li kev nthuav dav thiab kev cog lus tsawg; siab mechanical zog, thermal shock resistance, refractoriness, thiab tshuaj stability ntawm kub kub; thiab ib qho℃ntawm permeability tso cai rau cov roj kom dim thaum lub sij hawm pouring. Cov no yog tag nrho cov muaj feem xyuam rau cov ntaub ntawv refractory, adhesives, thiab cov txheej txheem siv los tsim lub plhaub.
