Kev kho saum npoo av yog txheej txheem ntawm kev tsim cov txheej txheej npog saum npoo ntawm cov khoom ua haujlwm los ntawm qee txoj kev, lub hom phiaj uas yog txhawm rau kom muaj qhov zoo nkauj thiab tiv thaiv tawm tsam rau saum npoo ntawm cov khoom. Cov txheej txheem kev kho saum toj ntawm cov ntsia hlau thiab cov noob txiv yog tsim rau cov hauv qab no:
1. Kev Siv Hluav Taws Xob: nqus cov ntu ua electroplated hauv cov kua tshuaj aqueous uas muaj cov ntawv tso ua hlau, thiab dhau qhov tam sim no los ntawm kev daws lub plating rau nag lossis daus thiab tso cov hlau hluav taws xob rau ntawm qhov chaw. Feem ntau, electroplating suav nrog galvanizing, tooj liab, npib tsib xee, chromium, tooj-nickel alloys, thiab lwm yam. Qee zaum qee zaum rhaub (xiav), phosphating, thiab lwm yam.
2. Kub-dip galvanizing: Nws ua tiav los ntawm kev tso cov pa roj carbon steel rau hauv qhov chaw zinc plating da dej nrog qhov kub txog txog 510 ° C. Raws li cov khoom siv, cov hlau-zinc alloy nyob rau qhov chaw ntawm cov ntawv steel maj mam dhau los ua passivated zinc rau thaj chaw sab nraud ntawm cov khoom. Kub-dip aluminizing yog cov txheej txheem sib xws.
3. Mechanical plating: Cov lus ntawm cov xim muaj hlau yog siv los cuam tshuam rau saum npoo ntawm cov khoom, thiab txheej txheej yog txias-welded rau saum npoo ntawm cov khoom.