PRETREATMENT FOR POWDER COATING
2017-4-12 · The aluminium material is very sensitive to alkaline attack. There for alkaline cleaners are milder for aluminium than for mild steel. However, if there is anodizing layer on aluminium, caustic soda based strong alkaline cleaner has to be used. However, this leaves black smut on the surface. To remove this aluminium is deeped in weak bath ...
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