Peb paub txog cov txheej txheem kev ua haujlwm muaj peb yam: ploj pwm casting, xuab zeb casting thiab hlau casting, uas hlau casting txias ceev yog qhov ceev tshaj plaws, txias nkhaus nce thiab nqis tsis tshwm eutectic platform, tus naj npawb ntawm graphite hauv lub koom haum metallographic yog. txo qis heev, txuas ntxiv tshuab cuab yeej castings radially generated ib tug loj tus naj npawb ntawm nplua thawj thiab theem nrab carbide, nws hardness thiab tej yam toughness yog ho zoo dua lwm yam ob txoj kev casting.
Cov txiaj ntsig ntawm vanishing pwm casting thiab xuab zeb casting yog ze ze, tsuas yog qhov sib txawv me ntsis. Ua ntej cov tshuaj tiv thaiv eutectic, qhov txias nkhaus yuav luag sib tshooj, tab sis qhov sib txawv ntawm ob qhov nce los ntawm qhov pib ntawm cov tshuaj tiv thaiv eutectic. Piv nrog rau cov xuab zeb casting, lub sij hawm co-crystal cov tshuaj tiv thaiv lub sij hawm ntawm vanishing tuag casting yog ntev dua, thiab txias tus nqi tom qab lub co-crystal cov tshuaj tiv thaiv yog qeeb qeeb, yog li cov co-crystal matrix ntawm vanishing tuag casting yog coarser, tus naj npawb ntawm carbides. raug txo, tus naj npawb ntawm graphite yog nce, thiab qhov sib thooj hardness thiab cuam tshuam toughness raug txo.
Lub solidification yam ntxwv ntawm vanishing pwm casting tshuab cuab tam castings:
1, ploj lawm pwm tshuab cuab yeej castings txias solidification ceev yog qeeb, qeeb dua li qub xuab zeb casting.
2, ploj pwm casting nyob rau hauv qhov tsis zoo siab casting, casting hlau yog zoo, casting cam khwb cia hlau qhov chaw yuav tsis tshwm nyob rau hauv lub cev, castings txij li thaum lub shrinkage muaj peev xwm, zoo heev txo qhov tsos ntawm lub casting shrinkage nyiam.
3, ploj mus pwm casting tshuab cuab yeej casting txias tus nqi yog qeeb, castings los ntawm casting kuj yog me me, tsawg dua av nplaum xuab zeb casting, yog li qhov tsim ntawm castings kev nyuaj siab yog me me, sov nyiam yog me me.