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What should be paid attention to the sand polishing of mould?

  • Author:liuweiqiong
  • Source:liuweiqiong
  • Release on:2017-09-05
Polishing with sandpaper requires the use of a soft stick or bamboo stick. When polishing round surface or spherical surface, using cork bar can better match the radian of spherical surface and spherical surface. The harder wood, like cherry wood, is more suitable for smooth surface polishing. Trim the ends of the wood so that it fits well with the surface of the steel so that the sharp angle of the wood (or bamboo bar) is avoided, causing deeper scratches on the surface of the steel. 

When using different types of sandpaper, the polishing direction should be changed 45 degrees ~90 degrees, so that the previous model of sandpaper polished left stripes shadow can be identified. Before the change of different types of sandpaper, must use 100% pure cotton dipped in the cleaning liquid from alcohol, on the polished surface carefully wipe, because a very small gravel on the surface will destroy the next whole polishing work. The process of cleaning is also important when it is changed from sandpaper to diamond paste. Before polishing continues, all particles and kerosene must be completely cleaned. 

To avoid scuffing and burn, the workpiece surface must be specially handled with #1200 and #1500 sandpaper. Therefore, it is necessary to load a light load and polish the surface by two steps polishing method. Polishing with each type of abrasive paper should be done two times in two different directions, each turning 45 degrees ~90 degrees between two directions.