Sand Casting Txheej txheem cej luam
Cov khoom siv tseem ceeb rau kev tsim cov xuab zeb yog molding xuab zeb thiab xuab zeb binder. Feem ntau siv cov xuab zeb yog silica xuab zeb. Kev kub siab ua haujlwm ntawm silica xuab zeb tsis tuaj yeem ua tau raws li kev siv zircon xuab zeb, chromite xuab zeb, corundum xuab zeb thiab lwm yam xuab zeb tshwj xeeb. Txhawm rau kom ntseeg tau tias cov xuab zeb molding thiab cov tub ntxhais muaj lub zog muaj zog thiab yuav tsis raug deformed lossis puas thaum tuav, shaping thiab nchuav cov kua hlau, cov xuab zeb molding feem ntau ntxiv thaum lub sij hawm casting los khi cov xuab zeb xoob rau hauv cov xuab zeb molding. xuab zeb. Feem ntau siv xuab zeb binder yog av nplaum. Ntau yam roj ziab los yog roj ib nrab ziab, dej-soluble silicates los yog phosphates, thiab ntau yam hluavtaws resins tuaj yeem siv los ua cov xuab zeb binders.
Cov xuab zeb moulds siv rau hauv cov xuab zeb casting yog muab faib ua peb hom: av nplaum ntsuab xuab zeb pwm, av nplaum qhuav xuab zeb pwm thiab chemically hardened xuab zeb pwm raws li hom thiab lub zog ntawm cov xuab zeb pwm.
