Effective stainless steel tensile cracking prevention measures
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For deep-drawing stainless steel deep drawing and difficult forming, in the actual production can use polyvinyl fluoride film to act as a lubricant. Polyvinyl fluoride film has excellent tear strength, a certain degree of toughness and elongation, and is easy to clean. After coating the dry film, the dry film can be deformed along with the blank during the drawing process, and the blank can be separated from the mold at all times. In addition, the film itself has a certain porosity and a large number of fiber cracks, so it is also possible to store a certain amount of lubricating oil, so the film The equivalent of a dry film lubricant. This lubrication method can effectively separate the deformed stainless steel plate from the surface of the mold, which has a good lubrication effect and is conducive to improving the service life of the mold and the qualification rate of the product.