The surface treatment of Car light fixing bracket mold is crucial to improve the demoulding performance. Here are some approaches and related analysis that can be taken.
First, hard chrome plating can be used. Hard chromium plating can form a hard, smooth and corrosion-resistant coating on the surface of the mold. This coating can significantly reduce the friction between the mold and the injection molded part, making it easier for the injection molded part to separate from the mold during the demoulding process. When performing hard chromium plating, it is necessary to strictly control the process parameters of chromium plating, such as the composition of the plating solution, temperature, current density and time. Ensure that the thickness of the chromium plating layer is uniform and the bonding force is strong to avoid peeling off during use. At the same time, the surface finish of the mold after hard chromium plating is high, which is beneficial to reducing surface defects of injection molded parts and improving product quality.
Secondly, nitriding is also an effective method. Nitriding can form a nitrided layer with high hardness and good wear resistance on the surface of the mold. This can not only improve the wear resistance of the mold and extend the service life of the mold, but also improve the demoulding performance. Nitriding treatment can adopt gas nitriding, ion nitriding and other methods. During the treatment process, the appropriate nitriding process and parameters must be selected according to the material and specific requirements of the mold. For example, the nitriding temperature and time are controlled to ensure the quality and performance of the nitrided layer. The nitrided mold surface has a lower friction coefficient, making the injection molded parts easier to demould, while also improving the mold's corrosion resistance.
Alternatively, using Teflon coating is a viable option. Teflon has extremely low surface energy and excellent non-stick properties, which can greatly reduce the adhesion between the mold and the injection molded part. Coating Teflon coating on the surface of the mold can make the injection molded parts hardly stick to the mold during demoulding, thereby improving the demoulding performance. Applying Teflon coating requires professional equipment and technology to ensure the uniformity and firmness of the coating. At the same time, the Teflon coating needs to have good stability in high-temperature and high-pressure injection molding environments to ensure long-term use.
In addition, polishing the mold surface can also improve the demoulding performance. Through fine polishing, the surface of the mold can be made extremely smooth and the surface roughness can be reduced. A smooth surface can reduce the friction between the injection molded part and the mold, making demoulding smoother. During the polishing process, attention should be paid to selecting appropriate polishing tools and materials, and controlling the intensity and time of polishing to avoid changes in mold dimensions caused by excessive polishing.
In summary, through surface treatment methods such as hard chromium plating, nitriding, Teflon coating and polishing, the release performance of the Car light fixing bracket mold can be effectively improved, and production efficiency and product quality can be improved.
