Common problems and solutions in the stamping process of stainless steel precision stamping parts 'hardware'

Common problems and solutions in the stamping process of stainless steel precision stamping parts 1. Scratches are formed on the surface of stainless steel precision stamping parts. Scratches on the surface of stainless steel precision stamping parts are mainly due to the relative movement of the workpiece and the mold surface. Under certain pressure, the blank is caused Direct friction with the local surface of the mold, combined with the deformation heat of the blank, causes the blank and metal shavings to melt on the surface of the mold, causing scratches on the surface of the workpiece. 2. The stainless steel precision stamping parts are cracked. The cold work hardening index of austenitic stainless steel is high, and the martensite phase will be induced by phase transformation during deformation. Martensite is relatively brittle and is prone to cracking. In addition, as the amount of deformation increases during plastic deformation, the induced martensite content will also increase with the increase of the amount of deformation. The greater the residual stress caused, the easier it is to crack during processing. 3. The die of stainless steel precision stamping parts wears too quickly. The gap of the die of stainless steel stamping parts is too small, the centering of the convex and concave die is not good, and the lack of precision of the die seat, die guide assembly and turret insert will cause die wear. In addition, continuous long time stamping of the same mold causes overheating of the punch, and multiple partial punching, such as nibbling, angle of attack or lateral force during shearing, which will bias the punch to one side, causing serious mold wear. 4. Stripping of stainless steel precision stamping molds. Factors such as the sharpness of the edge of the stainless steel precision stamping molds, the modulus of the mold, and whether the gap between the molds is reasonable, etc., will all cause the mold to have a striping problem. In addition, if you use non-dedicated stamping oil, the problem of gumming and viscosity increase due to oxidation of the oil will also cause material banding. 5. The quality of the stamping oil used in stainless steel precision stamping parts is extremely important. The stamping and drawing oil with good performance contains sulfur and chlorine compound additives, which can ensure the extreme pressure processing performance while avoiding the hardening, deformation, burrs, and burrs of the workpiece. Problems such as rupture. At the same time, for the easy cleaning of the finished product, low-viscosity stamping and drawing oil should be used as much as possible. The above are the common factors that cause problems in the stamping process of stainless steel precision stamping parts. Reasonable arrangement of the process, the use of special stamping drawing oil, and the selection of reliable raw materials can effectively improve the quality of the workpiece.