What are the general reasons for the deformation of Vacuum Casting Prototype?
1. If time permits, experienced people usually have to pour the mold one month before taking out the shape and starting to use the mold.
2. The quality of the mold silicone used is too poor, or the shrinkage rate is too high or the filling is too much (to reduce the cost of mold glue). The shrinkage rate of high-grade mold glue is 0.1%, and the normal one is about 3%. higher.
3. The vacuum casting mold requires a very high temperature when casting, and the silicone liquid is affected by thermal expansion and contraction. At that time, the size may be just right. Once it cools down, it will shrink, which is smaller than the actual size. a lot of.