In the field of modern industrial manufacturing, copper electrical stamped parts play a key role in many fields with its excellent electrical conductivity, good thermal conductivity and outstanding mechanical properties. From a piece of copper raw material to a stamped part that meets high-precision requirements, this process involves a series of complex and sophisticated production processes.
Mold design and manufacturing
The mold is the core tool for the production of copper stamping parts, and its design and manufacturing quality directly determine the quality of the stamped parts. During the design stage, engineers need to fully consider the material properties of copper. Copper has good ductility but is relatively soft, which requires the gap between the punch and the die of the mold to be precisely controlled. Generally speaking, for a copper sheet with a thickness of t, the blanking gap is usually between (0.05 - 0.1) t. This gap must ensure that the blanking process proceeds smoothly and avoid excessive burrs.
The structural design of the mold is also crucial. For Stamped Copper Electrical Components with complex shapes, multi-station molds may be required. For example, when producing copper relay contact pieces with multiple holes and complex contours, multiple processes can be completed in one stamping stroke through progressive dies, including punching, blanking, bending, etc. The manufacturing precision of the mold is extremely high. Advanced processing equipment, such as CNC machining centers, is used to control the dimensional tolerance of mold parts within ±0.01mm and the surface roughness Ra value reaches below 0.8μm to ensure the high precision and long life of the mold.
Raw material preparation
The quality of copper raw materials is the basis of the quality of stamping parts. First of all, copper with appropriate purity should be selected. Generally, the purity of industrial copper is above 99.9%. Before production, copper sheets need to be inspected, including hardness testing, metallographic analysis, etc. The hardness should meet a specific range. For example, the hardness of T2 copper is usually between HB35-45, and the metallographic structure should be uniform and defect-free.
At the same time, surface treatment of raw materials is also an indispensable link. Since copper may oxidize during storage and transportation, a layer of copper oxide film will form on the surface. Through chemical treatment methods such as pickling, this oxide film can be removed to ensure the purity of the material surface during stamping, and improve the quality of stamping parts and subsequent processing performance.
Stamping process
The stamping process is a key link in the production of Metal Stamping Parts Electric Copper. The first is the punching process, which separates the copper sheet from the raw material according to the predetermined shape and size. During the punching process, the pressure of the punch press should be accurately adjusted according to the thickness of the sheet and the structure of the mold. Generally, when punching small copper stamping parts, the punch press pressure ranges from several tons to tens of tons.
Then comes the bending process, if the stamping parts have bending shape requirements. For materials such as copper with good ductility, the bending radius needs to be reasonably designed. Generally, the bending radius should not be less than 1-1.5 times the thickness of the material to prevent cracks in the material at the bend. During the bending process, the rebound problem also needs to be considered. The rebound amount can be controlled by reasonably adjusting the die angle and applying appropriate correction force to ensure the accuracy of the bending angle.
For some copper stamping parts with special shape requirements, complex processes such as drawing and flanging may also be involved. During the drawing process, the drawing coefficient should be controlled to prevent the material from cracking or wrinkling. The drawing coefficient is generally determined according to the material thickness and part shape. For copper materials, the first drawing coefficient is usually between 0.5 and 0.6.
Post-processing and quality inspection
The stamped copper parts for electricity need to be post-processed after stamping. This includes removing burrs, and grinding, rolling and other methods can be used to make the edges of the stamped parts smooth. For some stamped parts with special surface requirements, surface treatments such as electroplating may also be required to improve their corrosion resistance and appearance quality.
Quality inspection is the last checkpoint to ensure that the copper stamped parts meet the requirements. Through high-precision testing equipment such as three-coordinate measuring instruments, the dimensional accuracy of the stamped parts is fully tested, and the dimensional tolerance should be controlled within the design requirements. At the same time, an appearance inspection is carried out, and defects such as cracks and scratches are not allowed. It is also necessary to sample and test the physical properties of the stamped parts, such as conductivity testing, to ensure that their performance meets the requirements of use.
In short, the production process of Electrical Copper Stamping Components is a complex process involving multi-faceted knowledge and technology. From mold design and manufacturing to raw material preparation, stamping operations, post-processing and quality inspection, each link is closely linked to ensure the high-quality production of copper stamping parts and lay a solid foundation for its wide application in various fields.
our products
Metal Stamping Parts Electric Copper is a component that occupies an important position in the industrial field. Our copper stamping parts are made of high-purity copper, which has excellent physical properties. It has extremely high electrical conductivity, which can ensure efficient and stable transmission of current, which makes it excellent in the electrical field. At the same time, good thermal conductivity makes it have excellent performance in heat dissipation, effectively avoiding problems caused by overheating. In the production process, we use advanced and precise stamping technology. High-precision molds ensure the accuracy of the shape and size of the stamping parts, with extremely small tolerances, which can perfectly adapt to various types of equipment.
