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What is tungsten alloy (high specific gravity tungsten alloy)? Tungsten alloy is usually a refractory metal, generally composed of W-Ni-Fe (tungsten-nickel-iron) or W-Ni-Cu (tungsten-nickel-copper) or W-Ni-Cu-Fe (tungsten-nickel-copper-iron) ), some tungsten alloys also add Co (cobalt), Mo (molybdenum), Cr (chromium), etc. They have a high melting point, are twice as dense as steel, and are 50% heavier than lead. The content of tungsten in the alloy usually accounts for 90% to 98%, which is why tungsten alloys can have high density (usually 16.5 g/cm3 to 18.75 g/cm3). Ni, Fe, and Cu are used as adhesives to bond brittle tungsten together, thereby enhancing the ductility of the tungsten alloy and making it easy to process. Ni-Fe is a commonly used additive, and its ratio is 7Ni:3Fe or 8Ni:2Fe (weight ratio). The conventional production process of tungsten alloy includes mixing, cold pressing and liquid phase sintering until the required density is achieved. During the liquid phase sintering process, this matrix alloy is in a molten state, which helps tungsten to better dissolve into the liquid and disperse large tungsten particles (20~60 microns) into this matrix alloy. This material in the sintered state usually undergoes thermomechanical processing, such as forging, to enhance its hardness and strength. Currently, WNiFe is the most popular component of high specific gravity alloys (tungsten alloys), such as 93W-4.9Ni-2.lFe and 95W-4Ni-lFe. Adding an appropriate amount of cobalt to WNiFe alloy can enhance its strength and ductility. Main properties of tungsten alloy Tungsten alloy has many special properties, such as: Small size but high density (usually 16.5 g/cm3~18.75 g/cm3), high melting point, high hardness, excellent wear resistance, high ultimate tensile strength, good ductility, low vapor pressure, high temperature resistance, It has good thermal stability, easy processing, corrosion resistance, good shock resistance, extremely high radiation absorption capacity, excellent impact resistance and crack resistance, and is non-toxic and environmentally friendly, consistent with international environmental protection standards.
Applications of tungsten alloy
Because tungsten alloy has the above-mentioned special properties, it is widely used in many fields, such as: sports, including golf clubs, fishing sinkers, darts, motorboats, racing cars; medicine, including radiation shielding, collimators, isotope containers, radiation protection Test tubes; technology, including tungsten alloy electronic subassemblies, oil drilling, coal mining; military, bullets, shrapnel, flying missile balance balls, etc.Main tungsten alloy products and services provided by Zhuzhou Century Tool Co., Ltd1. Tungsten alloy--Tungsten alloy rods, blocks, disks, etc. used in various aspects--Mainly used in the production of tungsten rods for darts--Golf nuts, fishing weights--Counterweight for yachts, boats, submarines or other types of vessels--Planes, helicopters, F1 cars and other models--Kinetic energy armor-piercing projectiles used to penetrate armor--Balance weight, oil drilling equipment--bullets, pistols and bomb blocks, balls--Shielding parts, power racks for depleted uranium energy, X-rays, medical equipment, etc.--Mobile phone/clock oscillator--Tungsten alloy nozzle.
