Selection of high-quality tungsten carbide punching pins

       punching pins are also called punches, punches or male molds, which are parts used to shape the inner surface of a product in a mold. According to different materials, it can be divided into SKD punching pins, SKH punching pins, ASP punching pins, tungsten carbide punching pins and high-speed steel punching pins. They are different in appearance because of their different materials. The following mainly introduces the selection of high-quality tungsten carbide punching pin products. Selection pictures of high-quality tungsten carbide punching pins (1) Look at gloss. High-quality punching pins should be black, high-gloss, and free of rust or spots. In reflection, if you find bright shiny reflections on the edges, it is likely that the product has been used twice or has been naturally oxidized. (2) Listen to the sound. The high-quality tungsten carbide punching pin will emit a crisp metal sound when tapped. If it is a short sound, it may be made of synthetic materials or low-quality tungsten steel. punching pins made of inferior tungsten carbideare prone to breakage. Selection pictures of high-quality tungsten carbide punching pins (3) Look at the weight. Take a few tungsten carbide punching pins and feel the weight with your hands. If it is a real tungsten carbide punching pin, it will be heavier, while a synthetic product will be lighter. (4) The punching pin should choose different tungsten carbideaccording to the different material and thickness of the punching. Normally, the greater the thickness of the stamped product, the better toughness and lower hardness of the tungsten carbidemodel should be selected; the greater the hardness of the stamped material, the lower the hardness of the tungsten steel, so as to prevent the punching pin from being punched out; The smaller the thickness of the stamped material or the lower the hardness, the higher the hardness of the tungsten carbidemodel should be selected. punching pins can be used not only in small computer cases, mobile phones, and smart appliances, but also in large-scale punching machines such as drilling machines and milling machines, mainly for processing round holes.