Hlau etching tom qab kho

Tom qab etching, silk screen number case yuav tsum tau muab tshem tawm. General acid resistant number case yog yooj yim soluble nyob rau hauv alkali. Muab lub phaj etching rau hauv cov tshuaj sodium hydroxide ntawm 40-60g/L ntawm qhov kub ntawm 50-80 degree rau ob peb feeb kom tshem tawm cov number case. Tom qab tshem tawm, yog tias xav tau lub teeb ci siab, nws tuaj yeem polished thiab tom qab ntawd dyed. Tom qab dyeing, kom tsis txhob muaj xim thiab ua rau hnav thiab corrosion kuj, pob tshab gloss xim tuaj yeem txau. Rau qee cov hlau uas muaj kev tiv thaiv corrosion zoo thiab tsis stain, cov xim pob tshab yuav tsis siv, nyob ntawm qhov xav tau tiag tiag.