Jan 22, 2020 Viewed: 296 Tag: stamping tooling  

How to solve the surface defects of metal tensile molds

Hardware drawing molds are very common in the molding process, but during the production process, the appearance of the product is not complete, and there are some defects, such as scratches, indentations, etc. If these defects occur, can we solve them? How to solve it?


Metal stretch mold First of all, if you want to solve the surface defects, you must first understand why the hardware stretch mold has defects and what causes it. When we use a common structure for bending, because the bending punch of the metal stretching mold and the surface of the material are relatively sliding, and the material is soft, the metal stretching mold will inevitably leave scratches on the surface of the material. Secondly, analyze the bad position of the hardware drawing mold to find the final factor. Check whether there are foreign objects such as iron filings on the surface or inside of the metal stretching mold product before molding, and then check whether there are a lot of burrs on the bending edge of the metal stretching mold. The easiest way to solve the surface defects of the metal stretching mold is to change the structure and change the sliding friction of the bending punch of the metal stretching mold into rolling friction. This can minimize scratches. You can also add stamping oil or The surface is covered with a plastic film to prevent scratches, but this cost is not low. If you want to completely prevent this phenomenon, or if conditions permit, you can use the flap structure, because the flap structure does not exist relative friction at all, so there will be no surface problems of metal stretching molds.


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