Use a brush or rag to stain lime slurry, magnesium oxide, stain remover, washing powder or metal degreaser, and wipe the surface of the parts called wiping and degreasing. Wiping and degreasing does not require degreasing equipment, has great operational flexibility, does not require additional energy, and has low cost, and can degreasing any part. Its disadvantages are manual operation, low efficiency and poor working conditions, so it is mainly used for oil removal of parts with large volume, small batch and complex shape, which are difficult to handle by other methods.
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