Txheej txheem yam ntxwv ntawm Precision Casting

Stainless hlau precision casting yog tag nrho ntawm pwm muaj peev xwm. Rau nyias thiab complex castings, high fluidity yog yuav tsum tau, txwv tsis pub, tag nrho cov pwm yuav tsum tau sau. Lub casting ua ib qho khoom pov tseg. Qhov tseeb fluidity ntawm stainless hlau yog feem ntau hais txog nws cov tshuaj muaj pes tsawg leeg thiab pouring kub. Piv txwv li, alloys nrog eutectic Cheebtsam los yog ze rau eutectic Cheebtsam, raws li zoo raws li alloys nrog ib tug nqaim khoom kub ntau yam, muaj fluidity zoo; phosphorus hauv cam khwb cia hlau tuaj yeem txhim kho fluidity, thaum sulfur ua rau fluidity tsis zoo. Ua kom qhov kub thiab txias tuaj yeem txhim kho fluidity.

Txij li thaum lub shrinkage ntawm stainless hlau precision casting zoo heev tshaj li ntawm cam khwb cia hlau, nyob rau hauv thiaj li yuav tiv thaiv shrinkage kab noj hniav thiab shrinkage defects nyob rau hauv castings, feem ntau ntawm cov txheej txheem casting txais kev ntsuas xws li risers, txias hlau, thiab nyiaj pab kom ua tau raws li kev sib tw.

Txhawm rau tiv thaiv qhov tshwm sim ntawm shrinkage kab noj hniav, shrinkage porosity, pores thiab kab nrib pleb nyob rau hauv stainless hlau castings, cov phab ntsa thickness yuav tsum yog uniform, ntse ces kaum thiab txoj cai-angle lug yuav tsum tau zam, sawdust yog ntxiv rau cov xuab zeb casting, coke ntxiv. mus rau cov tub ntxhais, thiab hollow hom Cores thiab roj xuab zeb cores los txhim kho lub retreatability thiab huab cua permeability ntawm xuab zeb pwm los yog cores.

Vim tias qhov dej tsis zoo ntawm cov hlau molten, txhawm rau tiv thaiv cov teeb meem txias thiab tsis txaus ntawm cov hlau castings, phab ntsa thickness ntawm cov hlau castings yuav tsum tsis pub tsawg tshaj 8 hli; siv qhuav casting los yog kub casting; tsim nyog nce qhov kub thiab txias, feem ntau 1520 ° ~ 1600 ° C, Vim tias qhov kub thiab txias yog siab, cov hlau molten muaj qib siab ntawm overheating, thiab nws nyob twj ywm kua rau lub sij hawm ntev, thiab fluidity tuaj yeem txhim kho. Txawm li cas los xij, yog tias qhov ntsuas kub siab dhau lawm, nws yuav ua rau muaj qhov tsis xws luag xws li cov nplej ntxhib, kub tawg, pores thiab xuab zeb nplaum. Yog li ntawd, feem ntau me me, nyias-walled thiab complex-zoo li tus precision castings, lub pouring kub yog hais txog lub melting point kub ntawm steel + 150 ℃; cov qauv ntawm cov txheej txheem pouring yog qhov yooj yim thiab cov seem loj yog loj dua li cov hlau cam khwb cia; lub pouring kub ntawm loj thiab tuab-walled castings Nws yog hais txog 100 ° C siab tshaj nws melting point.