Hauv peev txheej lag luam,ib qho qauv lossis qauv qauv yog tsim (feem ntau yog siv quav ciab) thiab muab tso rau sab hauv lub hlau kheej hu ua flask. Cov ntub dej ntub yog hliv rau hauv lub tog raj kheej ib ncig ntawm cov ciab puab. Tom qab cov plaster tau ua tiav, lub tog raj kheej muaj cov qauv ciab thiab plaster muab tso rau hauv qhov cub thiab yog kho kom txog thaum siv quav ciab tau ua tiav tag nrho. Tom qab siv quav ciab tau hlawv zoo tag nrho (de-waxing), lub raj nplaim taws tawm ntawm qhov cub, thiab hlau yaj (feem ntau yog cov hlau tsis xeb, hlau tsis muaj tooj, tooj daj ... thiab lwm yam) tau nchuav mus rau hauv qhov kab noj hniav sab laug ntawm cov ciab. Thaum cov hlau tau txias thiab qhov ua kom zoo, cov nplauv plaster yog chipped tam sim ntawd, thiab cov hlau nrum yog qhia tawm.
Casting yog qhov tseem ceeb heev rau kev tsim cov khoom puab lossis duab yam xws li tshuab nrog cov qauv ntsuas hauv cov hlau. Qhov chaw cam khwb cia muaj qhov tshwj xeeb saib rau lawv, qhov sib txawv ntawm cov ntu tshuab. Qee qhov qauv uas yuav nyuaj rau tshuab tau yooj yim dua yog pov. Tseem muaj cov khoom siv pov tseg tsawg dua rau ntau qhov, vim tias tsis zoo li kev siv lub tshuab, kev nrum tsis yog qhov ua kom yooj yim. Txawm li cas los xij, qhov kev ntsuas meej ua tau los ntawm kev ntog tsis zoo li kev siv lub tshuab.
Thaum Twg Koj Yuav Tsum Xaiv Cov Peev Xwm Txheej Cuam Tshuam thiab Thaum Twg Koj Yuav Tsum Xaiv Tsho Xaum Hlau?
Ib qho loj dua ntawm kev nqis peev yog tias nws tuaj yeem tso cai rau undercuts hauv tus qauv, thaum xuab zeb casting tsis. Hauvxuab zeb casting, cov qauv xav tau yuav tsum tau rub tawm ntawm cov xuab zeb tom qab nws tau ntim, qhov twg hauv kev nqis peev casting tus qauv yog vaporized nrog kub. Hollow castings thiab thinner seem tuaj yeem ua tau yooj yim dua nrog peev casting, thiab cov txheej txheem nto zoo dua feem ntau ua tiav. Ntawm qhov tod tes, kev nqis peev yog qhov txheej txheem ntau dua li sijhawm thiab kim, thiab tuaj yeem muaj qis dua kev ua tiav zoo dua li cov xuab zeb nrum dua vim tias muaj ntau cov kauj ruam hauv cov txheej txheem thiab ntau txoj hauv kev rau tej yam tsis raug.
Sijhawm Post: Dec-18-2020