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US5516372A Process for phosphating steel strip galvanized on one side 失效
一面镀锌钢带磷化工艺

Process for phosphating steel strip galvanized on one side
摘要:
A process for phosphating a galvanized surface of a steel strip electrolytically galvanized on one side by contacting the galvanized surface of the steel strip with a phosphating solution containing 1.0 to 6 g/l zinc, 0.5 to 5.0 g/l nickel and 14 to 25 g/l phosphate at a temperature of 40.degree. to 70.degree. C. for from 2 to 20 seconds. The ungalvanized surface remains metal bright.
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