Tell you what 98% of people want to know about defect prevention and improvement measures in the processing of stainless steel stamping parts

In the process of processing, any slight error will lead to defects. The more common ones are cracks under small bending radius and the problem of substandard bending height. It is necessary to further analyze the causes of stainless steel stamping parts, so as to ensure the accuracy of stamping parts processing. In the processing of stainless steel stamping parts, if the radius is less than 0.5 when bending ordinary cold-rolled steel sheets, cracks on the outer surface will occur. This is mostly caused by compressive or tensile stress on the inner and outer surfaces of the bent part of the stamping part. For a certain bending radius, the greater the thickness of the material and the longer the bending width, the easier it is to produce cracks. The former is because the distance from the neutral surface to the inner surface becomes larger, and the latter is because the bending width limits the amount of external deformation, so it is necessary to control the bending radius of the stamping part. However, the processing of stainless steel stamping parts cannot reach the required bending height, which may be because the material is in a free state between the convex and concave dies, which is prone to mis-shift. Tests have proved that in the L-shaped bending, the bending radius, the size of the die radius and the degree of finishing of the side wall cause the friction to increase and the material is pulled into the die, and the length of the material in the rotary convex die is reduced. In order to further improve the processing accuracy of stainless steel stamping parts, it is necessary to study the rationality, economy and value of its dimensional accuracy. In the case of mass production, progressive bending molds should be used as much as possible. Since the gap of the guide pins is directly related to the accuracy of the parts, it is also helpful to improve the accuracy if it is adjusted. From the perspective of the structure and shape of stainless steel stamping parts, when the thickness and hardness of the materials are different, the height dimension cannot be kept constant, a post-bending resection process should also be appropriately added to ensure the desired processing accuracy. Need to know more, welcome to consult: