Beijing Katherine Knott Steel Co., Ltd. 





 I. Glossary 



 beryllium bronze beryllium as the major alloying elements in copper alloys, also known as beryllium bronze. It is the best performance in the copper alloy-elastic material, high strength, elasticity, hardness, fatigue strength, elastic hysteresis, corrosion resistance, abrasion resistance, cold, high conductivity, non-magnetic, shock does not produce sparks series of excellent physical, chemical and mechanical properties. 

 Second, beryllium copper Category 

 Processing beryllium bronze and cast beryllium bronze points. Commonly used in cast beryllium bronze Cu-2Be-0.5Co-0.3Si, Cu-2.6Be-0.5Co-0.3Si, Cu-0.5Be-2.5Co and so on. Processing beryllium bronze beryllium content was controlled in less than 2%, domestic beryllium copper to 0.3% nickel, or plus 0.3% cobalt. Commonly used in the processing of beryllium bronze: Cu-2Be-0.3Ni, Cu-1.9Be-0.3Ni-0.2Ti etc.. Beryllium copper is a heat treatment to strengthen the alloy. Machining beryllium copper used for a variety of advanced flexible components, especially the good conductivity, corrosion resistance, abrasion resistance, cold, non-magnetic variety of components, a large number as a diaphragm, diaphragm, bellows, the micro-switch and so on. Casting beryllium copper is used in explosion-proof tools, various molds, bearings, bearings, bushings, gears and a variety of electrode. Beryllium oxides and dust is harmful to the production and use to pay attention to protection. Beryllium copper is a good performance of mechanics, physics, chemistry, an alloy, after quenching of the quenched and tempered, high strength, elasticity, abrasion resistance, fatigue resistance and heat resistance, while beryllium copper with high conductivity , thermal conductivity, resistance to cold and non-magnetic, no sparks when crashing, ease of welding and brazing and corrosion resistance, excellent in the atmosphere, freshwater and seawater. Beryllium copper alloy corrosion in seawater: (1.1-1.4) × 10 - 2mm / year. Corrosion depth: (10.9-13.8) × 10-3mm / year. Corrosion, strength, elongation did not change, it is also water can be maintained more than 40 years, the submarine cable repeater constructs irreplaceable materials. : In less than 80% concentration of sulfuric acid in sulfuric acid (room temperature) and 0.0012-0.1175mm, the concentration is greater than 80% corrosion slightly accelerated the corrosion depth. 

 Performance and parameters of the three, beryllium copper 

 Beryllium copper is a supersaturated solid solution copper alloy, mechanical properties, physical properties, chemical properties and good corrosion resistance combined with non-ferrous alloys after solid solution and aging treatment, with special steel of high strength limit, elastic limit, yield strength and fatigue limit, but also have to have a high conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, widely used in manufacturing various types of mold inserts, replace steel production high precision, complex shape of the mold, welding electrode materials, die-casting machines, injection molding machines to punch, wear and corrosion work and so on. Beryllium copper strip used in the micro-motor brushes, mobile phones, batteries, products, industrial materials is indispensable for national economic construction. Parameters: the density of 8.3g/cm Hardness ≥ 36-42HRC conductivity ≥ 18% of IACS tensile strength ≥ 1000mPa thermal conductivity ≥ 105w/m.k20 ℃ 

 Use and performance parameters of beryllium copper 

 High-performance beryllium copper around the non-ferrous metal low pressure and gravity casting mold used in a variety of conditions, failure causes through in-depth study of beryllium bronze mold material, composition, and resistance to liquid metal erosion of the inherent relationship between the development of high conductivity (heat) of high The combination of high performance beryllium copper mold material strength, wear resistance, heat resistance, high toughness, resistance to liquid metal erosion, to solve the domestic non-ferrous metal low pressure, gravity casting mold is easy to crack, easy to wear and other problems, significantly improve the mold life, stripping speed and casting strength; to overcome the adhesion of the molten metal slag and the erosion of the mold; to improve the quality of the casting surface; reduce the cost of production; die life close to the level of imports. Tsugae high performance beryllium copper hardness HRC43 density 8.3g/cm3 beryllium-containing 1.9% -2.15%, widely used in plastic injection molding mold inserts, the mold core, die-casting punch, hot runner cooling system, thermal conductivity of mouth the overall cavity of the blow mold, automotive mold, wear plate, and so on.