Cov yam ntxwv uas zoo tagnrho molding xuab zeb binder yuav tsum muaj xws li:
① Tsawg viscosity hauv cov kua, tso cai rau nws sib tov sib xyaw nrog cov xuab zeb nplej thaum xuab zeb - sib tov; Tsis tas li ntawd, lub resulting molding xuab zeb yuav tsum muaj zoo heev flowability, ua rau cov creation ntawm cov xuab zeb pwm thiab cores nrog complex geometries uas yog replicate nto contours ntawm tus qauv.
② Kev kho nrawm nrawm- qhov zoo tshaj plaws, cov ntawv khi yuav tsum muaj peev xwm kho tsis tau siv cov cua sov- txhawm rau txuag lub zog thiab pab kev siv cov khoom pheej yig uas tsis yog- hlau lossis txhuas alloy qauv thiab cov thawv tseem ceeb. Yog tias "kho-ua ntej- stripping" txoj kev tuaj yeem siv tau, cov duab thiab qhov tseeb ntawm qhov ua tau zoo tuaj yeem txhim kho tau zoo.
③ Lub zog siab tom qab kho, ua kom cov khoom tsim ntawm cov cores nrog cov duab nyuaj thiab nyias nyias - ntu; qhov no tseem tso cai rau txo qis ntawm qhov sib txuas ntxiv, yog li txo qis cov nqi tsim khoom, txo cov roj evolution thaum lub sij hawm nchuav, thiab txo qhov yuav muaj roj- cuam tshuam txog qhov tsis xws luag (xws li porosity) hauv cov castings.
④ Tsawg roj evolution-tshwj xeeb, lub binder yuav tsum tau evolve roj maj mam thiab nyob rau hauv tsawg npaum li cas thaum raug tshav kub. Rau castings xws li cam khwb cia hlau thiab ductile hlau, nws yog ntxiv stipulated tias lub binder muaj ib tug tsawg nitrogen cov ntsiab lus los tiv thaiv kev tsim ntawm defects xws li subcutaneous porosity thiab pinholes.
⑤ Zoo collapsibility- lub binder yuav tsum muaj peev xwm ntawm tus kheej - decomposition thiab disintegration thaum raug kub siab - los tiv thaiv lub tsim ntawm sab hauv kev ntxhov siab thiab tawg nyob rau hauv lub casting raws li nws solidifies, thiab kom yooj yim tshem tawm cov xuab zeb thaum lub sij hawm ntxuav.
Tsis tas li ntawd, lub binder yuav tsum tiv taus qhov nqus dej thiab degradation, muab lub txee ntev siv tau - lub neej tom qab sib tov, nthuav tawm tsis yog - ua raws li cov qauv thiab cov thawv tseem ceeb, tsis yog - tshuaj lom rau tib neeg, ua phooj ywg ib puag ncig, thiab muaj nyob rau ntawm tus nqi pheej yig.
