What Are The Inspection Requirements For O-rings During Injection Molding

1. Injection molding processing: The raw materials must be fully dried according to the process requirements, and there should be no moisture, otherwise there will be silver streaks on the surface after injection molding

2. The temperature, pressure, time, etc. of the injection molding process meet the requirements of the process parameter card. The injection speed should be strictly controlled. Too fast injection speed will lead to poor adhesion between the coating and the substrate (the injection speed of the electroplated parts is controlled at 15 percent -35 percent between)

3. After the intermediate shutdown, the material should be cleaned to avoid the brittleness of the injection molded product caused by the degradation of the raw material in the screw due to the long residence time.

4. During the injection molding process, release agents, especially those containing silicone oils, cannot be used, otherwise the adhesion of the coating will be affected.

5. The operator must wear clean cotton gloves during the injection molding process to avoid the surface of the injection molded product from being polluted.

6. The surface of the injection molded parts shall not be polished and ground, so as not to affect the adhesion between the coating and the substrate.

7. Internal stress control: The product is not allowed to have large internal stress, and internal stress testing should be carried out after injection molding.

8. Size control: the length, assembly feet or assembly holes meet the measurement requirements of drawings and inspection tools.