Zinc-aluminium die-casting yog ib feem ntawm hmoov tuag-casting nrog zinc raws li lub ntsiab tivthaiv. Qhov sab nrauv ntawm ib sab yog ib txheej tuab ntom ntom heev nrog ib tus qauv uas ntxeem tau hauv tsev. Cov neeg siv degtyasing acids tsis siv, thiab alkaline degreasing tsuas yog siv tau rau degreasing.
Feem ntau ntawm cov zinc-aluminium yuav tsum tau tooj liab-plated nickel-chromium ntau txheej txheej, uas muaj kev cai siab rau kev kho kom zoo nkauj. Nws yog mechanically polished ua ntej yuav degreasing. Yog li waxing (qhov muab tshuaj txhuam muaj nplaum yog xim dawb) yog thawj kauj ruam, ua raws li cov tshuaj degreasing thiab roj ntsha electrolytic.
Txij li thaum lub melting point ntawm dawb quav yog saum toj no 70%, kom emulsify dawb wax, nws yog ib qhov tseem ceeb kom tshem tawm cov kub ntawm cov dej saum toj no 70 ° C. Yav tag los, txhua leej txhua tus tsuas siv cov tshuaj uas siv tshuaj deg degasing kom zoo dua qub kom tshem tau cov khoom tawm. Txoj kev no ntev thiab muaj hwj chim tsawg. Niaj hnub no, muaj ib qho tshwj xeeb ntawm cov dej ciav-tshem dej, uas luv zog txhua lub sij hawm thiab muaj cov kab mob zoo. Yog siv ultrasound zoo heev. Feem ntau, ntxiv rau qhov siv quav ciab, cov quav tsis degreased, thiab yuav tsum tau siv tshuaj degreasing. Yam tshuaj lom neeg ntawm zinc alloy yog muaj zog heev, thiab alkalinity ntawm tshuaj degreasing kua tsis yog ib qho dhau lawm, txwv tsis pub nws yuav corrode cov tsos. Qhov kub no feem ntau tswj tau ntawm 50 thiab 70 ° C rau 3 mus rau 5 feeb. Cov khoom uas tau muab los ntawm kev ua lag luam kuj muaj ib tus neeg saib xyuas degreasing uas muab cov kev siv degreasing thiab tshem tawm tawm, thiab cov nyhuv ultrasonic zoo.
Qhov muaj pes tsawg leeg ntawm lub tshuab electrolytic ntawm zinc alloy yog zoo li cov tshuaj degreaser. Txawm li cas los xij, nws yog ib qhov tsim nyog yuav tau nplua nuj nyob hauv cov neeg ua haujlwm nyuaj. Nyob rau hauv electrolytic degreasing, zinc alloy die-casting yuav tsum tau txo ntawm qhov cathode, qhov kub li 50-70 ° C, qhov ceev ceev yog 3 ~ 5 A / dm 2 , thiab lub sijhawm yog 1-2 min.
Nyob rau hauv kev xaiv ntawm cov ciab tawm thiab degreasing ob-rau-ib txheej txheem, ib zaj duab xis xim av qee zaus kuj tshwm sim nyob rau ntawm lub qhov tuag ntawm qhov tuag-casting nyob rau hauv cov nyhuv ultrasonic. Qhov kev ntsuas no yuav tsum tsis txhob siv. Degreasers siab rau zinc tuag castings yuav tsum tau hloov. Qhov no yuav tsum tau them nyiaj tshwj xeeb.