Tin-phosphor bronze is an alloy with copper as the main component and tin and phosphorus added. Copper, as the base metal, gives the alloy good electrical and thermal conductivity. The addition of tin improves the strength, hardness and corrosion resistance of the alloy ...... Some friends ask, what role does "phosphorus" play? Today to talk about the role of "phosphorus". Tin phosphorus bronze in the "phosphorus" play a role, can be viewed from the following four aspects: First, "phosphorus" play the role of deoxidizer in the copper alloy melting process, phosphorus can be used as a deoxidizer. It can combine with the oxygen in the copper liquid to generate a stable oxide, thus reducing the oxygen content in the copper liquid, preventing copper in the solidification process due to oxidation and produce porosity, inclusions and other defects, improve the densification and quality of the alloy. Second, "phosphorus" can improve mechanical properties such as hardness and strength - phosphorus can be added to refine the grain, hinder the dislocation movement, thus improving the hardness and strength of tin-phosphorus bronze. This makes the alloy stronger and more durable when subjected to external forces, and is suitable for the manufacture of parts that require high strength and wear resistance, such as springs and connectors. It also improves the wear resistance of the alloy - during friction, phosphorus can form a protective film that reduces wear on the friction surface and extends the life of the part. This makes tin-phosphorus bronze widely used in the manufacture of plain bearings, worm gears and other wear parts. Third, "phosphorus" can improve corrosion resistance Phosphorus can form stable compounds with copper, enhance the corrosion resistance of the alloy. Tin phosphor bronze in the atmosphere, freshwater and seawater have good corrosion resistance, can resist oxidation, corrosion and erosion and other effects, suitable for use in a variety of harsh environments. Fourth, "phosphorus" can improve casting performance Phosphorus can be added to reduce the melting point of the alloy, improve mobility, so that the alloy in the casting process is easier to fill the mold cavity, reduce casting defects. At the same time, phosphorus can also refine the casting organization, improve the quality and performance of castings. What are the main application areas of tin-phosphorus bronze?
Electrical and electronic field connectors and connectors: tin phosphor bronze has good electrical conductivity, elasticity and fatigue resistance, is the manufacture of computers, cell phones, TVs and other electronic equipment in the connectors, connectors, ideal materials, to ensure the reliability and stability of the connection, can be achieved by frequent plugging and unplugging operations and not easy to damage. Electronic springs: spring elements used in electronic and electrical equipment, such as relay springs, switch springs and so on. Its elasticity is good, can be in the long-term compression and tension process to maintain stable elastic performance. Leadframes: In electronic components such as integrated circuits, leadframes play a role in connecting chips and external circuits. The strength and conductivity of tin phosphor bronze make it suitable for the production of lead frames, which can ensure the normal operation of electronic components. Electrical connectors: Used as connecting parts in various electrical equipment, such as connectors of wires and cables, metal parts of sockets, etc., to ensure stable transmission of current. Wear-resistant parts in the field of machinery manufacturing: The wear-resistant nature of tin phosphor bronze makes it suitable for the manufacture of a variety of mechanical parts subject to friction, such as gears, worm gears, bearings, bushings and so on. In these parts, tin phosphor bronze can reduce wear and prolong the service life of the equipment. Spring: It can be used to make all kinds of mechanical springs, such as springs in automobile suspension systems, compression springs and extension springs in industrial equipment. Its good elasticity and anti-fatigue properties can meet the requirements of springs in different working conditions. Moulds: some of the key components of the mold will be used in tin phosphorus bronze, such as injection mold slider, guide pillar, etc., to take advantage of its good abrasion resistance and machining performance, to improve the accuracy and service life of the mold. Shipbuilding propellers: ship propellers operate in seawater for a long time, requiring materials with good seawater corrosion resistance and anti-wear properties. Tin-phosphor bronze can meet these requirements and is used in the manufacture of ship propellers. Shaft tiles and fasteners: Ship's shaft tiles need to withstand greater pressure and friction, tin phosphor bronze wear resistance and strength make it suitable for the manufacture of shaft tiles. In addition, some fasteners on ships also use tin phosphor bronze because it is not easy to corrode in seawater environment. Pipes and valves: Pipes and valves on ships need to have good corrosion resistance and sealing, tin phosphor bronze can be used to manufacture these parts to ensure the normal operation of the ship. Crafts field due to the tin phosphorus bronze has good processing performance and color, often used in the production of high-grade crafts, such as sculpture, ornaments, jewelry and so on. Its unique metallic texture and processability provide more possibilities for the design and production of handicrafts ......
