Zinc casting tuaj yeem ua hmoov coated

zinc casting tuaj yeem ua hmoov coated

Ib feem cam khwb cia yuav muaj porosity uas yuav ua rau blemishes nyob rau hauv lub txheej ntawm kub. Cov huab cua uas nyob ze ntawm qhov chaw yuav nthuav dav thiab tawg cov zaj duab xis thaum lub sijhawm kho. Muaj sevral txoj kev los txo qhov teeb meem. Koj tuaj yeem ua kom sov ib feem kom tsav tawm qee qhov cua ntxiab uas ua rau muaj teeb meem. Tshav kub rau qhov kub txog li 50 ° F siab tshaj qhov kho qhov kub, txias nws, thiab siv cov txheej. Kho ntawm qhov kub qis tshaj plaws kom txo tau qhov teeb meem. Koj tseem tuaj yeem siv cov hmoov uas tau tsim los rau lub voj voog khiav uas yuav pab tso tawm cov huab cua tsis muaj qhov tsis zoo.

Lub adhesion rau zinc casting yog lwm qhov teeb meem. Yog hais tias lub hmoov txheej tsis txhob lo, nws yog vim koj tsis tau ntxuav thiab npaj qhov chaw kom raug. Koj yuav tsum tau tshem tawm tag nrho cov organic av (greas, roj, av), thiab tej zaum koj yuav tau polish los yog moj tej tawg nto kom tshem tawm ntawm inorganic av (tuag tso los yog zoo sib xws cov tebchaw). Saib qhov xwm txheej ntawm adhesion tsis ua haujlwm. Puas yog nws nyob rau txhua qhov chaw ntawm qhov chaw lossis ntau dua yuav tshwm sim hauv tib thaj chaw txhua lub sijhawm? Yog tias nws nyob txhua qhov chaw, qhov chaw tsis huv, thiab koj xav tau lub tshuab ntxhua khaub ncaws ntau dua nrog cua sov. Yog tias nws nyob hauv thaj chaw sib cais, tej zaum nws yog cov khoom tso tawm. Hlau phosphate yoojyim ib zaj duab xis ntawm zinc, tab sis nws tsis yog qhov tseeb hloov dua siab tshiab txheej rau zinc. koj sim cov kauj ruam polish (tumble qhov chaw nyob rau hauv lub vibratory ntaus ntawv, ultrasonic tu los yog ib co zoo sib xws txoj kev) saib seb qhov teeb meem yog tuag-tso cov neeg ua hauj lwm. Tham nrog tus neeg muag tshuaj ntxiv txog kev tshuaj xyuas tag nrho ntawm ntu thiab cov kev xaiv rau kev npaj.