Yuav ua li cas tiv thaiv qhov chaw pitting tsis xws luag ntawm cov xim -coated steel coils?

Dec 23, 2025 Tso lus

1.Yuav ua li cas tswj qhov zoo ntawm cov ntaub ntawv raw?

Kev huv huv substrate:

Xyuas kom lub ntsej muag ntawm cov galvanized lossis aluminium-zinc plated substrate tsis muaj xeb, roj, plua plav, lossis cov khoom seem. Siv cov cuab yeej ntsuas kev huv (piv txwv li, kev sib cuag lub kaum sab xis) thaum tuaj xyuas.

Tsis txhob ya raws thiab plua plav paug thaum khaws cia; xeb- pov thawj ntim thiab ib puag ncig qhuav raug pom zoo.

Txheej Txheej Txheej Txheem:

Lim cov txheej txheem kom huv si ua ntej siv (5-10μm lim pom zoo), ua kom cov txheej txheem viscosity thiab cov khoom khib nyiab raws li cov txheej txheem.

Tsis tu ncua xyuas txheej compatibility kom tsis txhob sib tov sib txawv batch los yog hom, uas yuav ua rau muaj feem cuam tshuam.

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2.Yuav ua li cas optimize cov txheej txheem pretreatment?

Cleaning Section Management:

Xyuas kom lub degreasing tov concentration thiab kub nyob rau hauv cov txheej txheem ntau yam (feem ntau 2-4% concentration, 40-60 degree), thiab hloov cov tshuaj da dej tsis tu ncua.

Ntxiv dag zog rau kev saib xyuas cov dej kom zoo (conductivity Tsawg dua lossis sib npaug li 50μS / cm) kom tsis txhob muaj tshuaj lom.

Txheeb xyuas qhov xwm txheej ntawm cov hlua khi thiab hloov cov chais hnav tam sim kom tsis txhob ya raws los ntawm kev nqa mus rau cov txheej txheem tom ntej.

Tshuaj Kho Mob:

Tswj pH, qhov kub thiab txias, thiab zaj duab xis tuab ntawm cov tshuaj passivation (xws li, chromium-dawb passivation) kom ntseeg tau tias txheej adhesion thiab txo cov txheej txheem tom ntej.

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3.Yuav tswj cov txheej txheem txheej txheem li cas

Txheej Uniformity:

Kho cov menyuam coater tsis tau (cov menyuam ceev piv, siab) kom ntseeg tau tias cov txheej tuab tuab. Tom qab kev teeb tsa thawj zaug, siv zaj duab xis thickness ntsuas los xyuas ntawm ntau lub ntsiab lus.

Tsis txhob siab dhau los yog qis xim viscosity (hloov raws li tus neeg muag khoom xim cov lus pom zoo; feem ntau, daim ntawv thov viscosity ntawm 20-30 vib nas this rau 4-khob txheej) yog txaus.

Curing txheej txheem tswj:

Qhov cub kub qhov profile yuav tsum precisely phim cov xim yuav tsum. Cov cua kub ceev tuaj yeem ua rau hnyav evaporation thiab tsim npuas; segmented cua sov (preheating, curing, txias) yog pom zoo.

Xyuas kom lub qhov cub nozzles huv si thiab airflow zoo ib yam kom tsis txhob muaj overheating hauv zos los yog cov volatiles seem.

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4.Yuav ua li cas tswj ib puag ncig thiab khoom siv?

Painting Room Cleanness:

Tuav lub siab zoo hauv cheeb tsam tha xim thiab teeb tsa lub tshuab lim cua (ISO Chav Kawm 8 lossis qib kev huv siab dua pom zoo).

Tsis tu ncua ntxuav cov menyuam coaters, pleev xim kab, tshuaj tsuag phom, thiab lwm yam khoom siv los tiv thaiv cov xim qhuav kom tsis txhob poob.

Khoom siv tu:

Tshawb xyuas qhov hnav thiab sib npaug ntawm cov txheej txheej txheej (piv cov menyuam, daim ntawv thov chais), thiab zom lossis hloov lawv raws li xav tau.

Xyuas kom cov tsav chais yog huv si tiv thaiv impurities adhering rau cov menyuam nto los ntawm kev hloov mus rau lub vaj huam sib luag nto.

 

5.Txoj kev saib xyuas thiab kev sim ua li cas?

Kev soj ntsuam online:

Nruab ib lub siab - daws teeb meem ntawm qhov chaw soj ntsuam (xws li kab scan lub koob yees duab) txhawm rau txheeb xyuas qhov tsis xws luag xws li pitting hauv lub sijhawm tiag tiag thiab ua rau lub tswb nrov.

Periodic sampling rau kev soj ntsuam kuaj (xws li kev soj ntsuam microscopic thiab lub zog dispersive spectroscopy) los txiav txim qhov muaj pes tsawg leeg ntawm pitting (zinc hais, plua plav, resin hais, thiab lwm yam) thiab taug qab nws cov hauv paus ntsiab lus.

Cov Ntaub Ntawv Txheej Txheem thiab Traceability:

Sau cov txheej txheem ntxaws ntxaws rau txhua qhov yob ntawm cov khoom siv (ntxuav tsis huv, txheej txheej, kho qhov kub thiab lwm yam) kom pab daws teeb meem sai thaum muaj teeb meem tshwm sim.