Decrypting Cleaning Methods rau Painting txawv hlau nto

Txhawm rau kom ntseeg tau tias kev siv cov hlau zoo dua, peb tuaj yeem ua cov txheej txheem ntxuav ntawm cov hlau. Kev xaiv ntawm txheej txheej txheej txheej ntxuav tu nws txawv nyob ntawm qhov ua tau zoo ntawm cov hlau sib txawv. Hauv qab no, Jiechang Electroplating Factory yuav piav qhia txog txoj hauv kev zoo tshaj plaws rau txheej ntxuav kev kho mob ntawm tsib hom hlau nto: steel, galvanized steel, aluminium, thiab lwm yam hlau mos thiab hlau alloy.
1. Hlau
Txoj kev zoo tshaj plaws rau kev ntxuav cov hlau tsis muaj coated yog siv cov kuab tshuaj los yog chav ntxuav tom qab sandblasting. Qhov tseeb, SSPC tus qauv yuav tsum tau ntxuav cov kuab tshuaj ua ntej phau ntawv thiab cov cuab yeej hluav taws xob tu thiab sandblasting. Nws raug nquahu kom siv txoj kev sandblasting los ntxuav qhov chaw puas. Dej dav hlau thiab dej sandblasting kuj yog cov kev xaiv zoo, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas qhuav sandblasting tsis tau. Lwm txoj hauv kev, xws li kev siv phau ntawv lossis kev siv fais fab tu, yog qhov tsim nyog rau kev tu me me.
2. Galvanized hlau
Cov kev pom zoo tu txoj kev rau cov tsis pleev xim galvanized steel sib txawv nyob ntawm seb qhov chaw nyob. Ib qho yooj yim hnyav ntxuav ntawm daim ntawv tshiab thiab huv galvanized yog txaus kom tshem tawm cov roj tiv thaiv siv rau sab nraum zoov cia ntawm daim ntawv galvanized. Lwm yam kev tiv thaiv ib ntus xws li kev kho chromate yuav tsum raug tshem tawm los ntawm txoj kev pom zoo los ntawm cov chaw tsim khoom. Epoxy thiab latex coatings tsis muaj qhov yuav tsum tau ua roughness thiab tuaj yeem ua kom nruj ntawm daim ntawv du thiab huv ntawm galvanized. Txawm li cas los xij, qee tus neeg ua haujlwm tsim kho ntseeg tias yuav tsum siv phosphoric acid lossis lwm yam tshuaj kho mob.
3. Aluminium thiab lwm yam hlau mos
Tshiab thiab huv si txhuas thiab lwm yam hlau mos tuaj yeem ntxuav tau zoo nrog cov kuab tshuaj. Cov plua plav thiab xoob corrosive tuaj yeem raug tshem tawm kom huv si nrog cov tshuaj ntxuav; Cov txheej qub tuaj yeem raug tshem tawm siv cov khoom yas los yog lwm txoj hauv kev sandblasting, thaum sandblasting nrog cov khoom ntxhib (steel balls lossis txhaj tshuaj) tuaj yeem ua rau cov hlau tsis zoo. Cov hlau saum npoo no tuaj yeem raug ntxuav ua ntej kom ua rau adhesion rau oily lossis latex coatings.
4. Alloy hlau
Cov hlau tsis tshua muaj hlau feem ntau tsis tas yuav tsum tau txheej rau kev tiv thaiv, tab sis cia siab rau lub ntuj oxide zaj duab xis tsim. Yog tias tsim nyog los tshem tawm cov xim tsis pom tseeb rau kev pleev xim, kev siv dej siab lossis ultra-high-pressure spraying txoj kev yuav tsum tau ua. Txhawm rau ua kom tiav qhov roughness, nws tseem yuav tsum tau ntxiv sandblasting hais. Feem ntau, txheej txheej txheej feem ntau siv rau cov qauv steel.
Lus Ceeb Toom: Lub hom phiaj ntawm txheej txheej ntawm cov ntaub ntawv hlau yog kom txaus siab rau qhov zoo li. Txhawm rau ua kom cov primer thiab cov hlau tsis zoo sib txuas, yuav tsum muaj roughness txaus, thiab cov tawv tsis yog hlau sandblasting hais xws li alumina, garnet, thiab emery feem ntau yog siv.