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化學配方數(shù)據庫

配方類型：	METALS AND THEIR TREATMENT
配方說明：	Metal Cleaning Prior to Powder Coating
配方組成：
配制方法：	Prior to powder coating the parts pass through a three stage spray washer and phosphatizing machine. Soil is removed in the first stage with a 1-min phosphoric acid spray at 150F, followed by an ambient temperature water rinse for 1/2 min, then a chromic acid rinse at 160F for 1/2 min. Moisture is removed in a 4-min. pass through a dry-off oven at 350F. Cooling time is 8 to 10 min.

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