Kev kho cov qhov dej yog ib txoj hau kev tsim cov txheej txheej ntawm txheej txheem workpiece los ntawm ib txoj kev. Lub hom phiaj ntawm qhov kev kho mob saum npoo av yog ua kom muaj kev zoo siab thiab ua kom tsis zoo los ntawm corrosive rau saum npoo ntawm cov khoom ua haujlwm. Cov kev kho qhov chaw saum npoo txhua yam yog vim muaj cov nram qab no:
Ua ntej, yam ntawm kev kho mob nto:
1. Electroplating: Cov khoom siv electroplated yog raus tes rau hauv kev tov dej uas muaj cov txheej txheem hlau, thiab ib qho hluav taws xob tam sim no dhau los ntawm qhov kev daws plating kom ua rau cov hlau electroplated kom muab tso thiab tso rau hauv kev tivthaiv. Feem ntau, electroplating xws li galvanizing, tooj liab, tooj npib, chrome, tooj liab-nickel alloy, etc., tej zaum kuj muab dub (xiav), phosphating, thiab lwm yam, peb muaj peev xwm tam sim no galvanize (xiav, dawb, multicolored, dub) dub dub Phosphating (grey phosphorus), nickel plating (dub nickel, tooj liab, tooj).
2. Kub dip galvanizing: Qhov no yog ua los ntawm kev sib tw cov carbon cov tivthaiv hauv plating da dej ntawm molten zinc nrog kub ntawm 5100C. Qhov tshwm sim yog hais tias hlau-zinc hlau nyob rau saum npoo ntawm hlau thau maj yuav kis tau zinc ntawm sab nraud ntawm cov khoom. Kub dip aluminizing yog ib txoj kev zoo sib xws.
3. Lub plhaws txhua yam: Cov nplais ntawm cov khoom yog cuam tshuam los ntawm cov khoom ntawm coated hlau, thiab txheej yog txias welded mus rau saum npoo ntawm cov khoom.
Thib ob, txoj haujlwm:
(1) Galvanized (xim xiav, dawb, ntau npaug, dub)
1. Kev Kho Mob Ua Ntej: kub degreasing tank (5 tso tsheb hlau luam) - roj ntsha hluav taws xob tank (3 tso tsheb hlau luam) - lub tank (4 tso tsheb hlau luam);
2, electroplating: electroplating tank (20 tso tsheb hlau luam) (ammonium chloride, zinc oxide, ci zog, softener tov);
3. Kev kho mob tom qab: lub pob tawb (1 lub tank) - cov tshuaj ntsuab tee (1 lub tawb) - xiav dawb / ntau yam / dub).
(2) Ua noj dub:
1. Kev Kho Mob Ua Ntej: kub degreasing tank (4 tso tsheb hlau luam) - ntov cov chamber (4 tso tsheb hlau luam);
2, hau dub: hau dub (5 lub tais) (ntsev alkali, sodium nitrite kua);
3. Kev kho mob tom qab: cov roj xeb (1 pob).
(3) Phosphating:
1. Kev Kho Mob Ua Ntej: kub degreasing tank (1 tank) - tshuaj tso dej tank (1 lub tank) - electrolytic degreasing tank (1 lub tank), - kev kho deg (1 lub tank);
2. Phosphating: phosphating (forming a movie);
3. Kev kho mob tom qab: Hlauv cov roj xeb (2 tso tsheb hlau luam).