Several methods of surface treatment of copper

Due to the characteristics of copper material, its surface is poor in the air corrosion resistance, often in a humid environment is easier to rust, so we want to carry out surface treatment of copper, the following is a few copper tube surface treatment process.

First, according to the severity of rust on the surface of copper material treatment

1, the treatment process of serious rust: copper degreaser → washing → copper pickling polishing liquid → washing → copper chromium passivation liquid → (washing) → copper film protection liquid.

2, slight rust treatment process: copper degreaser → washing → ultrasonic cleaning agent → washing → copper chromium passivation liquid → (washing) → copper film protection liquid.

3, just a little bit of rust and oil processing process: copper rust degreaser → washing → copper chromium passivation liquid → (washing) → copper film protection liquid.

Two, according to the material classification of copper

1, copper (pure copper) treatment process has two kinds: copper degreasing agent, washing, copper pickling polishing liquid, washing, copper passivation liquid A, (washing), copper protective film liquid copper degreasing agent, washing, copper pickling polishing liquid, washing, copper chromium-free passivation liquid, (washing), copper protective film liquid.

2, brass, bronze, copper treatment process: copper degreaser, washing, environmental protection copper washing water, washing, copper chromium passivation liquid (washing), copper film protection liquid.

Three, according to the special use of the workpiece classification

1, the later stage of the workpiece needs to conduct electricity, heat conduction, welding processing technology: copper degreaser → washing → copper pickling polishing liquid → washing → copper passivation liquid → (washing).

2, the workpiece does not need to conduct, heat conduction, welding and other processing processes: copper degreaser → washing → copper pickling polishing liquid → washing → copper passivation liquid → (washing) → copper film protection liquid.

Four, according to the size of the workpiece classification

1, small size of the workpiece processing process: copper degreaser → washing → copper pickling polishing liquid → washing → copper passivation liquid → (washing) → copper film protection liquid.

2, large size of the workpiece processing process: water washing → copper cleaning water → water washing.