Influence factors of plastic plating-forming process of plastic parts on plastic plating

Influence factors of plastic plating-forming process of plastic parts on plastic plating.
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Forming process of plastic parts.
Due to the characteristics of the molding process, the injection molding parts inevitably have internal stress, but if the process conditions are properly controlled, the internal stress of the plastic parts will be reduced to the minimum, which can ensure the normal use of the parts. On the contrary, if the process is not controlled properly, there will be a lot of internal stress, which will not only reduce the strength and performance of the parts, but also warp or even crack in the process of storage and use, resulting in the cracking and even shedding of the coating. Therefore, the control of process parameters should make the internal stress of the parts as small as possible. The process conditions to be controlled are raw material drying, mold temperature, processing temperature, injection speed, injection time, injection pressure, holding pressure, holding time, cooling time and so on.
Effect of Post-treatment of plastic parts on Electroplating.
Due to the reasons of injection molding conditions, injection machine selection, product modeling design and mold design, there will be internal stress in different parts, which will cause insufficient local coarsening and difficulty in activation and metallization. Finally, the metallized layer is not resistant to collision and the adhesion decreases. The experimental results show that both heat treatment and finishing agent treatment can effectively reduce and eliminate the internal stress of plastic parts and increase the adhesion of the coating by 2060%.
In addition, the molded plastic parts should be specially packed and isolated, and it is strictly forbidden to scratch or scratch the surface, so as not to affect the appearance of electroplating. During the inspection, the inspector should wear skimmed gloves to prevent contamination of the plated surface and affect the adhesion of the coating.