1. Kev soj ntsuam
Tom qab tu, tshawb xyuas lub cav los ntawm cov chaw nres nkoj roj. Yog tias tsis muaj qhov chaw seem dub sludge thiab cov nplaim yog xim hlau hauv cov xim, qhov no feem ntau qhia tau kev tu ua tiav. Rau cov chaw hlau, so lub npoo nrog daim ntaub dawb huv. Yog tias tsis muaj stains, nws huv.
2. Kuaj Hydrophilicity
Cov hlau kom huv si yuav tsum yog hydrophilic. Raus rau hauv workpiece hauv dej huv thiab hle nws. Yog tias ib daim duab hnav tsoos tsho muaj dej nyob saum npoo uas tsis muaj roj pob lossis dej ntws tawm, lub sludge tau raug tshem tawm. Koj tseem tuaj yeem siv tus cwj mem DYNEne DYNE; Yog hais tias cov kab ncaj thiab tsis ntsws, nws qhia tau tias kev ntxuav tu yog txaus siab.
3. Lim ntawv xeem
Tso ib qho me me ntawm cov roj uas tau huv rau hauv cov ntawv lim dawb. Yog tias cov roj nplhaib yog tusyees kis, nrog cov npoo ntshiab thiab tsis muaj kev cuam tshuam, cov seem tau raug tshem tawm. If the center of the oil ring is dark or the edges are blurred, re-cleaning is necessary. 4. Qauv liab liab
Thov cov mem kua liab rau ntawm qhov chaw qhuav ntawm ib feem. Yog tias lub cim liab liab tshwm sim tom qab nqus nws nrog daim ntawv lim, degreasing yog muaj kev vam meej. Yog tias lub lim ntawv qhia txog thaj chaw tsis muaj xim liab, cov roj stain tsis tau muab tshem tawm tag nrho.
