Kev siv cov graphite pwm feem ntau yog tias nws qhov kub thiab txias kuj zoo dua. Qhov ntsuas kub ntawm cov tooj liab ntshiab yog li 1200 degrees. Kev ua haujlwm ntawm graphite pwm tseem nyob ruaj khov ntawm qhov kub thiab txias. Qhov kub thiab txias shrinkage yog me me, uas tuaj yeem tsis quav ntsej. Ntawm qhov tod tes, lub lubrication zoo dua. Thaum lub sij hawm solidification txheej txheem, cov hlau tov yog tsis yooj yim rau lo rau graphite pwm. Txawm hais tias thermal conductivity tsis zoo, nws tsis tas yuav tsum txias hauv casting, yog li qhov no yuav dhau los ua lub zog. Graphite pwm feem ntau yog siv nyob rau hauv kab rov tav casting, vim hais tias lub ntiajteb txawj nqus ntawm no casting txoj kev muaj kev cuam tshuam ntau dua rau solidification, thiab lub lubrication tsis zoo thiab tsis tuaj yeem cam khwb cia horizontally.
Lub ntsiab tsis zoo yog tias nws tsuas yog siv tau rau 1 mus rau 2 lub lis piam, vim tias cov kua hlau yuav nyob ntawm cov pwm, thiab nws yuav cuam tshuam rau cov crystallization rau qee yam, uas yuav ua rau lub ntsej muag zoo ntawm cov khoom siv. High-quality ingots txawm siv cov laug cam tshiab, uas yog siab. Feem ntau cov tuam txhab cia siab rau kev xa khoom, feem ntau ntau dua hauv Nyiv thiab Tebchaws Meskas, thiab kim.
Kuj tseem muaj hlau pwm casting hauv kev tsim khoom tam sim no. Txawm li cas los xij, txhawm rau txhim kho lubrication, feem ntau lubricants xws li carbon dub thiab roj feem ntau ntxiv. Feem ntau, nws tsuas yog siv nyob rau hauv ntsug semi-linked casting.