1. Cov txheej txheem ua tiav thiab cov khoom tiav tiav yuav tsum lees txais los ntawm daim ntawv qhia txog tus neeg ua ntej kev kho saum npoo tuaj yeem nqa tawm.
2. Cov kab tawg, vuam vuam vuam, vuam vias vias vias vias vias vias vias vias vias vias vias vias vias vias vias vias zoo zoo ua ntej muaj xeb. Nyob rau tib lub sijhawm, fluffy oxide nplai thiab tuab txheej txheej yuav tsum tau muab tshem tawm.
3. Yog tias muaj roj thiab roj nyob rau saum npoo ntawm welded steel yeeb nkab, nws yuav tsum tau muab rho tawm thiab ntxuav ua ntej xeb tshem tawm. Yog tias muaj cov roj stains thiab roj rau ntawm tsuas yog ib thaj chaw, ib txoj kev pov tseg ib leeg tuaj yeem siv rau hauv cov sijhawm zoo tib yam; yog tias muaj thaj chaw loj lossis txhua qhov chaw, cov kuab tshuaj lom los yog kub alkali tuaj yeem siv rau kev ntxuav.
4. Thaum muaj kua qaub, alkali lossis ntsev rau saum npoo ntawm welded steel yeeb nkab, koj tuaj yeem xaiv ntxuav nws kom huv nrog dej kub lossis tso pa. Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau qhov pov tseg cov dej khib nyiab, kom tsis txhob ua rau cov pa phem ib puag ncig.
5. Qee cov kauv tshiab tshiab ntawm cov kav xaib tau pleev xim nrog cov xim pleev xim kom tsis txhob xeb thaum lub sijhawm khaws cia thiab kev thauj mus los hauv lub sijhawm luv. Cov kav hlau tsis xeb coated nrog cov xim saib xyuas yuav tsum tau muab pov tseg raws li kev tshwj xeeb ib puag ncig. Yog tias cov xim txij nkawm yog ob txheej txheej uas kho los ntawm tus neeg sawv cev kho kom zoo, thiab cov xim txheej yog qhov pib khov kho, nws tuaj yeem kho nrog daim ntaub emery, stainless hlau raj velvet lossis tawg me me, thiab tom qab hmoov av tau ntxuav, txheej txheem txuas ntxiv tuaj yeem nqa tawm.
6. Rau saum npoo ntawm welded steel kav, xim kav khw primer los yog primer li ib txwm rau kev saib xyuas, thiab feem ntau xaiv cov txheej txheem pov tseg raws li cov xwm txheej tam sim no ntawm cov xim thiab xim tom qab xim. Txhua yam uas tsis tuaj yeem pleev xim ntxiv lossis cuam tshuam rau kev nplaum ntawm cov txheej tom ntej yuav tsum tau muab tshem tawm.
