Lub ntiajteb txawj nqus casting yog txheej txheem uas molten hlau yog poured rau hauv pwm nyob rau hauv lub zog ntawm lub ntiaj teb lub ntiajteb txawj nqus. Nws tseem hu ua gravity pouring. Feem ntau, nws suav nrog xuab zeb casting, hlau pwm casting, thiab peev casting; nyob rau hauv ib qho kev nkag siab nqaim, nws tshwj xeeb yog hais txog hlau pwm casting. Cov txheej txheem no belongs rau cov khoom siv hlau ua tshuab thiab, nrog rau kev ua haujlwm siab, ua ob txoj hauv kev tseem ceeb hauv cov txheej txheem casting.
Hlau pwm gravity casting siv tshav kub-resistant alloy steel pwm. Cov pwm yuav tsum tau preheated rau 200-300℃(txhua yam alloy qhov chaw) los yog 250-350℃(grey cam khwb cia hlau qhov chaw). Cov kab noj hniav pwm yog txau nrog txheej txheej ua los ntawm zinc oxide hmoov, thiab lwm yam, thiab cov pwm qhib thiab ib feem raug tshem tawm 10-60 vib nas this tom qab nchuav. Nws muaj kev ua haujlwm siab ntau lawm thiab tsim nyog rau cov khoom loj ntawm aluminium alloy thiab tooj liab alloy castings. Nws yog tsuas yog siv nyob rau hauv tsheb cav qhov chaw (xws li txhuas lub tog raj kheej blocks thiab lub tog raj kheej taub hau) thiab nyob rau hauv lub aerospace, lub hwj chim machinery, thiab lwm yam teb. Anti-gravity casting siv lub siab tsis tshua muaj siab los yog qhov sib txawv los tsav cov hlau molten filling rau hauv pwm, thaum microgravity casting siv electromagnetic teb los simulate ib puag ncig microgravity kom tshem tawm qhov sib cais ntawm qhov ntom ntom. Ob leeg yog derivative technologies. Cov neeg hlau muaj peev xwm tuaj yeem koom ua ke rau hauv lub ntiajteb txawj nqus casting ntau lawm kab los ua cov txheej txheem xws li kev teeb tsa tseem ceeb, pwm tu, thiab nchuav, yog li ua tiav kev tsim khoom.
