Tungsten - China Tungsten Industry Association News Center

Tungsten

Information

Tungsten Molybdenum Alloy 2021-10-14 1,152

Tungsten alloys have three kinds of types, tungsten molybdenum alloys, niobium tungsten alloys and hard alloys according to different added elements. Tungsten Molybdenum Alloy is an alloy containing molybdenum and tungsten, which includes two series of molybdenum tungsten alloy with…

Information

Production Technology of High Density Tungsten Alloy 2021-10-14 240

Strict control of high density tungsten alloy production technology has a vital impact on the strength, brittleness, impact toughness, hardness and corrosion resistance of products. There is an efficient and stable high density tungsten alloy production technology comprises the following…

Information

Tungsten Alloy with High Specific Gravity is an alloy with tungsten as the main content and other elements added, which can form various classifications according to the added elements. 1.W-Ni-Cu Alloy W-Ni-Cu alloy is mainly made by mixing, pressing and sintering W, Ni and Cu powders. Among them, W content is generally 80%~90%, and Ni and Cu binders are added to form a two-phase alloy after liquid phase sintering, and the density is close to the theoretical density. In this alloy, except W and Ni, the remaining content is mainly copper, which can improve the strength, plasticity and conductivity of tungsten alloy. In terms of properties, the alloy has no magnetism for special application, and other physical properties are the same as the overall properties of tungsten alloy. 2.W-Ni-Fe Alloy W-Ni-Fe alloy is made by mixing, pressing and sintering W, Ni and Fe powders. Among them, tungsten accounts for 80%~90%, while nickel and iron play the role of binder. Two-phase alloy is formed after liquid phase sintering, and its density is close to theoretical density. Nickel is an essential element in liquid phase sintering process, and its content is generally 0.5%~12%. If it is more than 12%, the heat resistance and corrosion resistance of the alloy will decrease. Iron can improve strength and plasticity in this alloy. This alloy has certain magnetism, and can be used as the core material of armor-piercing projectile, high momentum killing debris such as sub munitions, counterweight and other industrial fields. Compared with W-Ni-Cu alloy, this alloy has better strength and plasticity. 3.W-Ni-Cr Alloy Cr element in W-Ni-Cr alloy is used as solution reinforce additive element in this alloy, which can improve corrosion resistance and high temperature oxidation resistance, and can also improve the high temperature strength and hardness of the alloy. The general content is 0.2%~5%. The hardness of this alloy is high (HV=600, while the hardness of W-Ni- Fe alloy is HV=310). The mechanical properties of the alloy depend on the ratio of Cr/Ni. When the ratio is small, the plasticity is better and the hardness is slightly higher. When the ratio is large, the hardness is high, the tensile strength is low, and there is almost no plasticity. 4.W-Ni-Mo Alloy Mo element in this alloy has the same effect as Cr element in W-Ni-Cr alloy, which is used as solution reinforce additive element, and its content is 0~25%. It can be dissolved in the bonding phase during liquid phase sintering, which plays the role of solid solution strengthening and grain refinement, and effectively improves the mechanical properties, high temperature strength and thermal shock resistance of the alloy. The results show that with the increase of Mo content, the yield strength, ultimate tensile strength and hardness of the alloy will increase, while the ductility and sintering density will decrease. 5.W-Ni-Co Alloy As a synergistic reinforce additive element, Co can improve the high-temperature properties of the alloy, especially strengthen the bonding phase, avoid the formation of inter-alloy compounds, and obviously improve the high-temperature strength and hardness of the alloy, with a general content of 0.5%~5%. The results show that when the temperature is higher than 500 degrees centigrade, the strength and plasticity of this alloy are obviously higher than those of W-Ni-Fe alloy.

Classifications of Tungsten Heavy Alloys 2021-10-14 234

Tungsten Heavy Alloy with High Specific Gravity is an alloy with tungsten as the main content and other elements added, which can form various classifications according to the added elements. 1.W-Ni-Cu Alloy W-Ni-Cu alloy is mainly made by mixing, pressing…

Information

tungsten-alloy-for-nuclear-medical-shield-picture

Uses of Tungsten Alloy Medical Shield 2021-10-14 268

Tungsten Alloy Medical Shield is an ideal choice for manufacturing medical radiation shields. With the improvement of people’s living levels and the continuous development of science and technology, the concept of green and healthy life has been deeply rooted in…

Information

Tungsten Cemented Carbide Cutting Blade 2021-10-14 122

As industrial teeth, tungsten is an important raw material in machining and manufacturing. Tungsten-based cemented carbide tools have a series of excellent properties, such as high strength, good toughness, high temperature resistance, wear resistance and corrosion resistance. Even at 500…

Information

tungsten alloy extrusion grinding tool picture

Tungsten Alloy Extrusion Die 2021-10-14 101

Tungsten Alloy Extrusion Die is a technology for forming parts by extrusion die in the process of high-strength extrusion. This technology can not only prevent the extrusion rod from delamination or cracking, but also reduce the cross-section of the molded…

Information

Tungsten Alloy Shield 2021-10-14 111

Tungsten Alloy Shield is widely used in medical industry and nuclear industry because of its excellent radiation shielding ability. Despite the development of science and technology and the continuous improvement of people’s modern living standards, it is inevitable that some…

Information

Tungsten Alloy Automobile Counterweight 2021-10-14 116

Tungsten Alloy Automobile Counterweight can adjust the center of gravity of chassis when it is used in automobile, and make the center of gravity close to the ground, so that the automobile body can resist the ascending airflow of air…

Information

Tungsten Trioxide Gas Sensor 2021-10-14 102

Tungsten Trioxide (WO3), as a material with high gas sensitivity, high sensitivity and short response time, can be used as a gas sensor, and has been widely used in life and industry. A gas sensor is a kind of transducer…

Information

Tungsten Trioxide Gas Sensing Property 2021-10-14 107

In recent years, as a highly sensitive material, Tungsten Trioxide (WO3) has many advantages, such as short response and recovery time, appropriate response temperature, and easy measurement and control. It can be used in the military of national defense, and has…