How to solve the problem of dark color and poor luster of injection mold?
Injection mold production and processing manufacturing process will often encounter the phenomenon of dark color and luster is relatively poor, then what is the reason for the appearance of dark color and luster is relatively poor? And how do we solve it?
Normal injection mold production and processing manufacturing process, the gloss of the mold surface is mainly by the type of plastic, coloring agent and mold surface finish to determine, resulting in the emergence of dark color and poor gloss reasons and solutions are mainly the following points.
1. Poor finish of the injection mold, cavity surface rust, etc., poor mold exhaust.
2. The use of too much recycled material, plastic or colorant quality is poor, mixed with water vapor or other impurities, the use of lubricants of poor quality.
3. Injection mold casting system is defective, should increase the cold material well, increase the runner, polishing the main flow channel, manifold and gate.
4. The material temperature and mold temperature is low, if necessary, the gate can be used to local heating methods.
5. Plastic should be fully plasticized, but to prevent material degradation, heat should be stable, cooling should be sufficient, especially thick-walled products.
6. The clamping force should be enough during the manufacturing process of injection molds.
7. Injection mold processing pressure is too low, too slow, insufficient injection time, insufficient back pressure, resulting in poor compactness and make the surface of the dark color
8. Prevent cold material from entering the parts, if necessary, change to self-locking spring or reduce the nozzle temperature.
Do the above 8 points that can be very good to avoid the phenomenon of injection mold color dark and poor gloss, even in the production process of this phenomenon can also be very good to do a good job of remedial measures to minimize the impact on the production schedule of the enterprise, increase the production efficiency of the enterprise.
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