Cov txheej txheem casting yog cov kauj ruam tseem ceeb hauv kev tsim cov casting, ncaj qha cuam tshuam rau sab hauv thiab sab nraud zoo ntawm cov khoom. Cov txheej txheem casting suav nrog kev tswj ntau qhov tsis sib xws, suav nrog qhov ntsuas kub, nchuav nrawm, thiab lub sijhawm nchuav.
Kev xaiv ntawm qhov kub thiab txias yuav tsum tau txiav txim siab raws li cov khoom siv thiab cov yam ntxwv ntawm cov khoom. Kev kub siab ntau dhau tuaj yeem ua rau muaj qhov tsis xws luag xws li porosity thiab shrinkage kab noj hniav nyob rau hauv ib feem; Piv txwv li, qhov kub thiab txias tsis txaus yuav ua rau cov hlau tsis zoo molten, tiv thaiv tag nrho cov pwm kab noj hniav los ntawm kev sau.
Kev tswj qhov nrawm nrawm thiab lub sijhawm nchuav yog qhov tseem ceeb sib npaug. Tsim nyog pouring ceev thiab lub sij hawm xyuas kom meej tias cov molten hlau ntws smoothly mus rau hauv lub pwm thiab nyob rau hauv tag nrho cov kab noj hniav, txo eddies thiab splashing, yog li txo qhov tshwm sim ntawm sab hauv tsis xws luag nyob rau hauv ib feem.