Non-cyanogen strike copper plating technique
A cyanide-free copper pre-plating and process technology, which is applied in the field of cyanide-free copper pre-plating technology, can solve the problems of unreliable coating bonding, cumbersome operation and maintenance, and poor process performance, and achieve reliable coating bonding, simple process, and low cost Effect
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[0026] Method one (steel parts):
[0027] Chemical degreasing → normal temperature water washing → electrolytic degreasing → hot water washing → normal temperature water washing → 10% sulfuric acid activation → two normal temperature water washing → non-cyanide electroplating solution copper pre-plating → recycling → normal temperature water washing → 10% sulfuric acid activation → electroplating other metal layers.
[0028] 1. Clean before pre-plating
[0029] First, the steel parts to be plated are chemically degreased. After degreasing, they are cleaned with water at room temperature. After washing, the steel parts to be plated are electrolytically degreased, and then cleaned with hot water at 60℃ and then cleaned with water at room temperature. After cleaning, use the concentration 10% sulfuric acid is used to activate the surface of steel parts, and on this basis, the surface-activated steel parts are washed twice with water.
[0030] 2. Pre-plated copper on steel parts
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