How to polish the mold best?


Mold polishing is to use appropriate polishing tools (s […]

Mold polishing is to use appropriate polishing tools (such as sandpaper, polishing paste, oil stone, polishing machine or other mechanical polishing tools) to reprocess the surface of the mold cavity that has been processed in a small amount to make the surface reach the required size and surface roughness Degree requirements. It is usually the last process (or grinding if there is any).

Mold polishing has two purposes; one is to increase the smoothness of the mold, so that the surface of the product from the mold is smooth, beautiful and beautiful, and the other is to make the mold easy to demold, so that the plastic does not stick to the mold and cannot be removed. Mold polishing generally uses oilstone, sandpaper, polishing paste, etc. to polish the surface of the mold cavity so that the working surface of the mold can be as bright as a mirror. This is called mold polishing.

Do not use the finest whetstone, sandpaper, or abrasive polishing paste at the beginning of the mold polishing, as you can't throw away the rough lines. The living surface polished in that way looks very shiny, but when you take a side view, the rough lines appear. Therefore, it is necessary to polish from coarse whetstone, sandpaper or abrasive polishing paste, then change to finer oilstone, sandpaper or abrasive polishing paste for polishing, and finally polish with the finest abrasive polishing paste. This seems to be cumbersome and requires many processes. In fact, it is not slow, one after the other, the rough processing lines in the front are polished off, and then the following processes are carried out without rework, and the finish of the mold can meet the requirements with one step.