What problems will appear in the processing of silicone prototype model

The rapid production of silicone prototype model is one of the ways of prototype model processing. The reason why it is different from other prototypes is that the processing cycle is short, the number of processing is also relatively large and the cost is low. If you want to do hundreds of prototypes in other processing methods, not only the processing cycle is long, but also the processing cost is quite expensive. Usually, CNC Machining requires a prototype of several hundred yuan, which is done by silicone film covering. It takes only a few tens of yuan. So what problems will silicone prototypes encounter in the process of processing?

The prototype model of silica gel is in the process of processing, the problem often encountered is that bubbles and shrinkage occur. When the molding temperature of the silicone mold is too high, the silicone raw materials on the surface have begun to be formed in the process of pressing the mold, at this time, the air is already trapped inside and it is difficult to discharge, so it will cause formed bubbles. For this reason, you only need to reduce the molding temperature appropriately.

The shrinkage is mainly due to the influence of hot expansion and cold contraction, in the process of molding, the silicone is injected into the mold at the beginning, and the temperature is very high. However, when the silicone liquid is cooled, the volume will shrink. Therefore, if the silicone prototype model wants to be the same as the size on the drawing, it needs to be slightly larger when opening the mold.

so the silicone prototype model is in the process of processing, there will be bubbles and shrinkage, I hope to help you.

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