![]() High-speed stamping technology is a high-tech that integrates various technologies such as equipment, molds, materials, and processes. Compared with ordinary stamping, the speed of high-speed stamping is hundreds of times to thousands of times per minute. Defining 'High Speed' High-speed stamping is a relative term. What is considered high speed varies depending on the size of the part? For an automotive fender, 100 parts per minute (PPM) would be very fast. In comparison, stamping a small, simple washer at 100 strokes per minute (spm) would be very slow. High-speed progressive stamping dies for forming very small, complex parts, such as electrical connectors, which can be designed so the parts can run at 1,200 to 1,500 SPM. High-speed stamping means compare with tradition stamping machines, their stroke operation speed much faster than normal. High-speed stamping is an operation that generates special needs due to fast operating speeds. These special requirements generally relate to stock control, slug control and excessive wear problems. Speed-related problems typically start when press speeds exceed 100 strokes per minute. High-speed stamping is one of the progressive die stampings. It has an auto-transfer feeding system. And it also special designed for lots of numbers of parts of production. From the internet videos or view stamping factory at first glance, high-speed stamping appears do not require a big force to punching or blank out parts. Components at most times are produced from thin, small and relatively soft metal sheet material. Because the component material is thin and small, It’s easy to stack up and jam in the workstation, die plate, or the matrix. If the punch lacks the necessary hardness of strength, it fails or wears at a short time. Two factors affect compressive strength: alloy content and punch material hardness. Alloy content generally speaking it is means you should choose what kind of materials. Most of the times it will affect the lifetime of the tooling. Alloy elements such as molybdenum and tungsten contribute a great deal to the compressive strength. Meanwhile, the hardness of steel also can improve the wear resistance. But the material content will limit the highest of hardness. Generally speaking, tungsten carbide punch and hardened steel bushings are more often used as die tools when stamping metal parts. Because carbide punch and carbide dies has the better hardness and wear resistance compared with steel punches or dies. When the punching load exceeds the part material tensile strength limit, the slug suddenly separates from the part. This sudden loading of pressure on the punch generates a reverse force that often leads to punch head breakage. The punch head must have good tensile strength. it was determined by the material alloy and hardness. When the punch force removed, the deformed high-speed stamping part partially restored. The dimension of the blanked component is not 100% according to the shape of stamping tooling, then it will out the range of tolerance of mold. Stamping not only generates plastic deformation, but it also generates elastic deformation. The art of high-speed stamping is a tool maker’s skill. The high-speed stamping tooling has designed a special system to release the slug out of the matrix to avoid jammed in the workstation. This is very important to get stable quality products with high-speed stamping. #carbidebushings #hardenedsteelbushings #punchanddie #carbidemoldcomponents #carbidepunch
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AuthorAbby Zhang Archives
August 2021
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