Pretreatment method before painting - degrease treatment
Release time:
2022-11-30 15:51:25.759
Metal materials will adhere to various oil stains during processing and storage. According to the nature of oil pollution, it can be divided into saponified oil and non-saponified oil. Saponified oil is animal and vegetable oil, which mainly exists in drawing oil, polishing paste and other products. From the structure, it is an ester structure, which can be saponified with alkali to form soluble substances; Non-saponifiable oil is mineral oil,
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