Kev ceev faj rau kev siv cov kua nplaum PVC: PVC kua nplaum yog cov nplaum tshwj xeeb rau polyvinyl chloride (PVC) tsim los ntawm ntau yam khoom siv polymer. Nws muaj qhov zoo ntawm kev siv yooj yim, qhov chaw nrawm, thiab lub zog sib txuas siab. Tom qab lub workpiece yog sib txuas, nws muaj cov yam ntxwv ntawm dej tsis kam, kub tsis kam thiab corrosion kuj. Txawm li cas los xij, PVC kua nplaum yog cov nplaim taws thiab yuav tsum tau muab cia rau hauv qhov chaw txias thiab qhov cua. Thaum siv, xyuam xim rau qhov cua thiab tiv thaiv kev sib cuag nrog cov nplaim taws qhib. Cov kua nplaum yuav tsum tau npog txhua lub sijhawm tom qab siv kom tsis txhob muaj qhov hnyav volatilization.
