Vim yog cov cuab yeej ntawm kev tuag casting, kev xaiv qhov tseeb ntawm ntau cov txheej txheem tsis yog kom tau txais cov zoo nkauj castings, thiab pwm yog kev xaiv kom raug thiab kho cov txheej txheem tsis, tuag tsim yog qhov tseem zoo uas yuav tshwm sim hauv cov khoom tuag casting yog yuav cia siab rau kev qhia txog ntau yam. Yog hais tias cov pwm tsim tsim nyog, muaj teeb meem tsawg dua hauv cov khoom muaj nqis, thiab qhov casting tus nqi siab tshaj plaws.Rau qhov kev sib tw, kev tsim pwm tsis tsim nyog, muaj cov txheej txheem ntawm cov qauv quab yuam thaum casting tsim tau tib yam, thiab feem ntau ntawm cov cuab yeej kaw hauv lub pwm, thiab tsis tuaj yeem noj cov tshuaj tom qab cov punch filling thiab sab qab teb ntawm kev tuag casting tshuab ntau lawm, tuaj yeem tsis tau li qub, tau glued rau ntawm cov pwm taag.
Txawm hais tias qhov luminosity ntawm cov qauv kab noj hniav yog lub teeb heev, vim ntawm qhov sib sib zog nqus kab noj hniav, qhov phenomenon ntawm sticking to pwm tseem tuaj. Yog li tsim nyob rau hauv cov qauv tsim, nws yuav tsum yog kev txhim kho ntawm cov qauv ntawm cov castings, paub txog kev lag luam txheej txheem kev tuag casting tshuab, paub tseem tuag casting tshuab thiab cov txheej txheem tsis hloov kho, npaj cov yam ntxwv ntawm cov xwm txheej sib txawv, thiab kev xav txog cov txheej txheem pwm, qhov dej, thiab cov ntawv tas, tsim kom muaj cov tswv yim tsim nyog, ua tau raws li qhov yuav tsum tau muaj pwm.Qhov pib tau hais ua ntej, cov hlau ua puv sij hawm luv luv, hlau cov dej siab thiab tshaj tawm yog siab heev, kev ua haujlwm tsis zoo rau kev tuag casting thiab chilling cuam tshuam ntawm cov kev kub ntxhov ntawm lwm qhov kev kub ntxhov muaj kev cuam tshuam zoo rau lub neej pwm ntawm cov pwm.Qhov kev ua haujlwm pwm feem ntau yog siv los ntawm cov qauv tsim thiab ua khoom siv, raws li kev siv li niaj zaus siv, qhov kev puas tsuaj ntuj raug pom nyob rau hauv kev tu xyuas kev zoo, ua ntej tsis tuaj yeem kho thiab seem, tuag casting modulus (nrog rau cov khib nyiab) tuag casting ntau lawm