o thiab flaking yog ib qho tsis xws luag hauv casting. Flaking feem ntau tshwm sim ntawm qhov sib cais ntawm cov castings thiab yog ib qho nyias, tsis sib luag hlau protrusion perpendicular rau saum npoo ntawm casting. Qhov o yog qhov o hauv zos ntawm qhov chaw sab hauv thiab sab nrauv ntawm ib qho casting, tsim cov hlau tsis zoo nodular protrusions. Nws kuj yog ib qho kev tshwm sim ntawm cov pits hauv zos nyob rau hauv cov txheej txheem molding ntawm cov xuab zeb, uas ua rau cov ntxhib thiab imprecise castings.
Yog vim li cas rau qhov tshwm sim no yog: lub solidity ntawm molding xuab zeb tsis hooked, lub zog tsis txaus, nws kuj yuav yog vim muaj cov ntsiab lus ntawm cov dej noo, tsis sib xws thaum lub sij hawm casting, siab dhau heev lawm, los yog ceev casting ceev.
Kev tiv thaiv kev tiv thaiv muaj xws li kev txhim kho lub compactness thiab uniformity ntawm pwm, zam lub zos nruj los yog xoob, kho cov xuab zeb sib tov txheej txheem, siv pearl xuab zeb kom ntau li ntau tau los tswj cov dej noo thiab ua kom lub zog, thiab maj mam txo cov casting ceev kom txo tau siab.
Baozhu xuab zeb yog ib tug spherical particle nrog zoo fluidity, muaj zog breathability, thiab breathability zoo, uas yog conducive rau zus tau tej cov high-precision castings. Lub coefficient ntawm thermal expansion yog me me, thiab nws cov kev ua tau zoo yuav muab piv rau cov zircon xuab zeb. Nrog nws cov kev teeb tsa ntawm molding xuab zeb, castings yuav tsis tsim qhov tsis xws luag. Qhov saum npoo yog du thiab cov qauv yog ntom, cia cov nplaum kom npog tusyees. Baozhu xuab zeb yog cov khoom siv nruab nrab uas tuaj yeem siv ua ob qho tib si acid thiab alkali binders. Kev ua tau zoo rov ua dua tshiab thiab muaj txiaj ntsig zoo. Baozhu xuab zeb, raws li kev tsim kho tshiab hauv cov khoom siv molding ib txwm, tam sim no tau txais kev lees paub ntau ntxiv hauv kev lag luam casting thiab tau thov los ntawm ntau thiab ntau lub lag luam.