How to solve the problem of bending and cracking of bending stamping parts

In the bending production process of metal stamping parts, the outer layer of the bending part will be affected by tensile stress. When the bending radius is small to a certain extent, the product quality problems of bending and cracking are prone to occur, resulting in product scrap. Let's take a look at how stamping and drawing manufacturers solve the problem of bending and cracking of bent stamping parts in actual production practice. 1. Use materials with good surface quality and no defects. If the blank is defective, it should be cleaned up before bending, otherwise it will crack at the defect when it is bent. 2. For the bending of thicker materials, if the structure permits, grooves can be made on the inner side of the bend fillet first, and then bend. 3. For relatively brittle materials, thick materials, and cold-work hardened materials, heating and bending can be used, or annealing can be used to increase material shaping and then bending. 4. The bending line is perpendicular to the fiber direction of the material. 5. The bending radius of the workpiece is smaller than the Minimum bending radius. 6. The burr side of the blank is used as the inner side of the curve. Due to the influence of various very complicated factors, the value of Minimum bending radius is generally determined by test methods. [Related recommendation] Learn more: How to select processing equipment reasonably for stamping parts Learn more: How to choose a motor housing? Learn more: Stamping parts matching verification stage