Hardware talk about the main features and common problems of metal stamping parts

Many of the products we see in our daily lives are metal stamping parts, ranging from airplanes and automobiles to small pins. They are all metal stamping parts. What are the main characteristics of metal stamping parts and what are the common problems? Xiaoshuo will take you to take a look! The main features of metal stamping parts 1. The metal stamping parts are manufactured by stamping under the premise of low material consumption. The parts are light in weight and rigid. After the sheet material is plastically deformed, the internal structure of the metal is improved , So that the strength of stamping parts has been improved. 2. The metal stamping parts have high dimensional accuracy, the same size as the mold parts, and good interchangeability. No further machining is required to meet general assembly and use requirements. 3. In the stamping process, because the surface of the material is not damaged, it has a good surface quality and a smooth and beautiful appearance, which provides convenient conditions for surface painting, electroplating, phosphating and other surface treatments. Common problems and reasons in the processing of metal stamping parts 1. Burr: In the process of punching or cutting edges and corners, there is not completely leftover material, and burrs are generated under the section of the steel plate. Based on the section, the burr height is 0.2mm or more. The iron powder will damage the mold and produce unevenness. 2. Concave and convex: The surface of the material is abnormally convex or concave, which is caused by foreign matter (iron filings, dust) in the uncoiling line. 3. Roller printing: The cleaning roller or the feeding roller is caused by foreign matter attached to it (occurred at a fixed pitch). Generally, the foreign matter on the roller printing on the sheet can be removed. 4. Sliding mark: It is caused by the sliding of the roller, which occurs when it stops or accelerates suddenly. 5. The roll material may be crushed or the edges may be wrinkled: the guide roller of the uncoiling line may be wrinkled when the guide roller gap on the mold is small, which is caused by the unbalanced feeding of the coil. 6. Scratches: The main reason for the scratches on the parts is that there are sharp scars on the mold or metal dust falling into the mold. The preventive measures are grinding the scars on the mold and removing the metal dust. 7. Bottom cracking: The main reason for the bottom cracking of the part is poor plasticity of the material or excessive pressing of the die holder ring. The preventive measures are to replace the material with better plasticity or loosen the holder ring. 8. Wrinkles on the side wall: The main reason for the wrinkles on the side wall of the part is that the thickness of the material is not enough (thinner than the minimum allowable thickness) or the upper and lower molds are installed eccentrically, resulting in a large gap on one side and a small gap on the other side. Preventive measures are immediate replacement of materials and readjustment of molds.