Plastic mold processing factory, improving the quality of injection molded products
The injection molding factory mainly considers two aspects to solve the quality problem of plastic electroplating:
One is the quality inspection of the blank;
The second is to check whether the plating solution, operating method, and process are reasonable.
Today, the injection mold processing factory will share with you which way to start by changing the operation method to solve the quality problems of electroplated products.
1、 Reasonable and appropriate fixtures.
The fixture for plastic electroplating is very important. It should not only have appropriate conductive contacts, but also have appropriate tightness. The product should have good conductivity and be tightened, but also prevent deformation due to clamping. Don’t think that removing the parts without deformation after trial clamping is enough, but also consider the deformation after large-scale electroplating, especially in nickel plating where deformation is more likely due to higher temperatures. The insulation of the electroplating fixture is good, otherwise it will cause pitting on the surface of the plated part during the electroplating process. After chrome plating, the fixture will retract the chrome layer until it is completely removed to prevent it from falling off and causing surface pitting when copper is plated on the chrome layer.
2、 The plating solution has good cleanliness.
The electroplating copper plating solution in the injection molding plant is equipped with continuous filtration and air stirring devices, which ensure the clarity of the copper plating solution through continuous filtration. Copper plating solution should have good leveling and dispersing ability, as well as a wide operating range of current density.
Nickel plating should also meet the above conditions, but attention should be paid to the thickness of the coating. Many manufacturers often do not attach importance to this issue and believe that chromium plating is necessary in the future. The nickel layer is not a big deal, as long as bright copper is plated and bright, the nickel layer is white. This view is not correct enough. Improper coating thickness makes it difficult for plated parts to meet the requirements in corrosion resistance experiments. Therefore, in the plastic electroplating of automotive and motorcycle components, double-layer nickel and three-layer nickel seals are also plated to produce microporous chromium, in order to meet the requirements of corrosion resistance testing.