Tungsten And Molybdenum Materials
Tungsten and molybdenum materials refers to molybdenum material and tungsten material. There are three main smelting methods for tungsten and molybdenum material manufacturing, powder metallurgy, electron beam melting and vacuum melting fused. Tungsten and molybdenum are all refractory metals, its melting point is generally higher than 1650 ℃, commonly made into high-temperature structural materials, used in various high-temperature applications.
Tungsten and molybdenum materials applications: Tungsten material: 50% tungsten material is used for high-quality steel smelting, 35% used for rigid steel production, about 10% used for tungsten wire production and about 5% of used for other fields. Tungsten can be manufactured guns, rocket nozzles, armor-piercing, cutting metal blade, drill, hard mold, drawing dies and so on, uses a wide range of tungsten, involving mining, metallurgy, machinery, construction, transportation, electronics, chemicals, light industry, textile, military, aerospace, science and technology, used in various industrial fields.
Molybdenum materials: molybdenum is mainly used in the steel industry, most of which used molybdenum oxide as raw material to make into block used for steelmaking or cast iron and small amount of is made into molybdenum iron used in steelmaking. Low alloy steel has small molybdenum content, which is not more than 1%, but the consumption accounted for about 50% of the total consumption of molybdenum. Doped with small amount of molybdenum in stainless steel can improve the corrosion resistance of the steel. Molybdenum is added to cast iron, which can improve the strength and wear resistance of iron. Nickel-base superalloy containing 18% molybdenum having high melting point, low density and thermal expansion coefficient and other good properties, used in the manufacture of various high-temperature aerospace components.
Tungsten and molybdenum materials advantages:
1. high melting point;
2. low vapor pressure;
3.high temperature physical strength;
4. creep resistance;
5. high modulus of elasticity;
6. low coefficient of expansion;
7. excellent electrical conductivity;
8. excellent thermal conductivity;
9. corrosion resistance;
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