The advantages of tin-phosphorus-copper electronic spring

The copper parts in the household socket are the key components to ensure smooth current flow and reduce heat generation. High-quality household sockets are made of high-quality copper parts, which are anti-oxidation, strong toughness, thick copper sheets, and less riveting, which are the four major indicators of whether the socket copper parts are of high quality. A. Thick copper sheet, improve the current passing capacity, reduce the resistance of the copper part itself; 　　 B, anti-oxidation, no rust, reduce resistance increase and heating problems caused by rust; 　　 C, less riveting, preferably a whole piece of copper It can further reduce the rupture of the riveted part and the heating of the rivet.　　D, strong toughness, especially applied to the socket part, not easy to deform. Even if the socket is used for a long time, it can maintain a proper clamping force to ensure that the socket and the plug are tightly connected to reduce the arc; 　　 In the past few years, the use of brass as the current-carrying part of the socket was the mainstream; now, it is still made of brass. The current-carrying parts are dead, and the quality must be inferior. Brass has a bright yellow appearance, excellent conductivity, soft texture, and wear resistance, but its performance in terms of oxidation resistance and toughness (elasticity) is not ideal. After the brass is used for a long time, the surface of the copper parts will be oxidized and rusted, the color will darken, and the contact resistance will be increased; after repeated plugging and unplugging, due to poor toughness and serious deformation of the brass sheet, it is often impossible to get electricity or due to poor contact. An electric arc is formed, and the safe use of electricity cannot be guaranteed.　　 The current mainstream sockets all use tin phosphor bronze as the copper material. The tin-phosphorus bronze alloy has a purple-red appearance, and its biggest feature is its very high fatigue strength, strong elasticity, and excellent corrosion resistance and oxidation resistance. Even after long-term use, the surface will not be oxidized and corroded, the insert sleeve will not be deformed, and the proper clamping force will always be maintained.　　Considering the thickness of the copper parts, if the product cannot be disassembled for visual inspection, a simple method of weighing the weight by hand can be used. The more copper parts are used, the heavier the weight of the socket.　　The socket products of big brands basically use tin-phosphorus bronze as current-carrying parts, so as to ensure the normal service life of sockets for more than 12 years. For example, Ningbo metal stamping manufacturer's spring hardware socket copper sheet uses an integrated socket copper sheet. It uses continuous mold technology and selects high-quality tin-phosphorus copper high-precision tape to form at one time, avoiding too many riveting points and reducing the material itself. The resistance reduces the rupture of the riveted part and the heating of the rivet, fundamentally eliminates the risk of the riveting point affecting the quality, and the safety performance of the socket is greatly improved. It is understood that the tin-phosphorus bronze material selected for the socket shrapnel of the hardware factory not only has the good electrical conductivity of copper, but also has good elasticity, fatigue resistance, corrosion resistance, and oxidation resistance.