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Pickling before painting must be cautious
Workpieces are often subjected to electrophoretic coating after pickling treatment. In order to achieve better results, a separate pickling is sometimes carried out. But pickling may have some undesirable effects. This refers to the acid mist commonly formed in pickling, which may corrode related machinery and equipment, and at the same time endanger human health. Therefore, whether to pickle or not needs to be considered. In addition, there are some precautions for pickling, which will be described next.
1. The acid mist formed by pickling will corrode related machinery and equipment, and also endanger human health.
2. It will reduce the strength of the workpiece. If there is residue on the workpiece, it will also affect the salt spray resistance of the electrophoretic paint film.
3. If the cleaning is not clean after pickling, it will affect the stability of the electrophoresis tank and destroy the stability of the electrophoresis resin. If things go on like this, the electrophoresis tank will be scrapped.
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