Stainless steel stretch effective measures to prevent cracking

Using the appropriate lubricant for stainless steel drawing had a significant effect. A layer of lubricant can have a certain toughness and elongation of the film between the convex and concave mold is formed, which is conducive to the stainless steel deep drawing.

For widening the deep deformation, forming hard stainless steel drawing parts, it can be used in the actual production of polyvinyl fluoride film to act as a lubricant. Polyvinyl fluoride film having excellent tear strength of Hangzhou, a certain toughness and elongation, and easy to clean. After the coating dry, dry in the drawing process can be deformed together with the blank, can always be blank and mold are separated, combined with the film itself has a certain porosity and a lot of fiber crack, it can also be stored in certain lubricants, so the film equivalent to a layer of dry film lubricants. This lubrication can be effectively deformed stainless steel plate and the mold surface isolated, lubrication good effect, help to improve the passing rate of the mold and product life.

There are also some other simple precautions such as using white cast iron do blankholder abrasive, because white cast iron oil deposit of good performance, easy to form a lubricating film; another example tapered bead ring; additionally machining the workpiece edge smooth removing microcracks gap and to be effective in preventing cracking.