Tungsten applicatin - other tungsten materials Ⅰ
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- Category: Tungsten Information
- Published on Monday, 21 January 2013 10:41
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The ammonium metatungstate and heteropoly tungstic acid are mainly used as a catalyst in the petrochemical and organic synthesis.
Sodium tungstate is used for the production of certain types of paints and pigments, in addition also be used for metal tungsten, tungstic acid and tungstate manufacture and dyes, pigments, inks, and electroplating. Tungstic acid is mordant dyes, in the textile industry, in the chemical industry is used as a catalyst for preparation of high-octane gasoline. Tungsten disulfide in organic synthesis, such as in the preparation of synthetic gasoline was used as a solid lubricant and a catalyst.
Based on the superiority of the tungsten and its compounds, tungsten occupies an important position in the field of national defense. In the military industry, the pressure – resistant and heating – resisting parts which would contact with gunpowder, like the guns, cannons, tanks and other weapons and equipments, are produced by tungsten steel. The aviation jet engine's combustion chamber, fuel nozzles, turbine guide vane, turbine rotor blades are all made of tungsten alloy; The skin materials of rockets, missiles and satellites are tungsten-containing high-temperature resistance alloy; penetrators heads made of high-density tungsten alloy, can improve the performance of the shells; gyroscopes are the heart of aircraft, naval vessels and rocket's navigation and control system, gyro inertial elements made of high-density tungsten alloy, can improve the stability and control precision of the instruments, such as the aircraft's ailerons, rudder and horizontal tail, etc. are required counterweight to balance. In some aircraft, hundreds of kilograms high density tungsten alloy is used for counterweight; tungsten alloy material has a very important significance to the development of modern aerospace, aviation and maritime industry.
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Tungsten applicatin - tungsten electric vacuum lighting materials
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- Category: Tungsten Information
- Published on Monday, 21 January 2013 09:47
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Tungsten is used as tungsten filament, tungsten band and various forging components form for vacuum tube production, radio electronics, and X-ray technology. Tungsten is the best material to manufacture the glower and spiral wire. High working temperature (2200 to 2500 ° C) can ensure a high luminous efficiency, and the small rate of evaporation can ensure the long life of the filaments. Tungsten can be used for manufacturing the directly heated cathode and the grid electrode in electronic shock tubes, the cathode of the high-voltage rectifier and the indirectly heated cathode heater in a variety of electronic equipments. Tungsten can be used for the manufacture of X-ray tubes and the cathode and anticathode of gas radiation tubes, and the radio device contacts and atomic hydrogen torch electrode. Tungsten and tungsten rod can be used as a high-temperature furnace (3000 ℃) heater. Tungsten heater should work in hydrogen atmosphere, inert atmosphere or vacuum.
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Tungsten application- abrasion resistance and thermal strength alloy
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- Category: Tungsten Information
- Published on Monday, 21 January 2013 09:34
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The most infusible metal tungsten is often used as a component of many thermal strength alloy, for example, alloy make up with 3% to 15% tungsten, 25% to 35% chromium, 45% to 65% cobalt and 0.5% to 2.75% carbon mainly used for the manufacture of strong and wear-resistant parts, such as aviation engine valve, the working parts of the die eagerly knife, turbine impeller, mining equipment, ploughshares surface coating, as well as some other wear resistant parts. The alloy produced by tungsten and other refractory metals (tantalum, niobium, molybdenum, rhenium) is often used as heat resisting material.
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten applicatin - Tungsten-based alloy
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- Category: Tungsten Information
- Published on Monday, 21 January 2013 09:39
- Hits: 2529
The tungsten materials use for preparation of tungsten-based alloy, are mainly metal tungsten powders and tungsten materials with certain purity, particle size and the grain shape, including tungsten metal plates, rods, wire rods, and mainly used for manufacturing the tubes, radio components, high temperature furnace heating elements and insulating element, and tungsten crucible. Tungsten-based alloys include tungsten-based contact alloy and high-density alloy. High density alloys is divided into the W-Ni-Fe series, and W-Cu series, which is characterized the high density reached 16.5 ~ 19.0g/cm3, equivalent to more than 2 times that of the steel; high strength, up to 800~1000 MPa; good plasticity, W-Ni-Fe series sintered state elongation rate of 10% to 15%; good oxidation resistance, in air above 500℃ have no obvious oxidation; good machining performance, which could be deal with lathing, milling, and planing processing. W-Ni-Cu can be used as gyro rotors and counterweight elements in aircraft navigation instruments, and the control accuracy is very high. In addition, the W-Ni-Fe, W-Ni-Cu high-density alloy has also been widely used for the manufacture of shielding materials in the medical industry, the vibrating elements of communications industry in the phone and BP machines, in the sports and entertainment industry used as the weight elements of the ball head part in Golf racket, in the electrical industry used as high-voltage contacts and the electrical heating elements. W-Cu (Mo-Cu) materials have good thermal conductivity and electrical conductivity, a small linear expansion coefficient, can be widely used as electrical contact materials, microelectronic packaging materials and the heat sink materials. This kind of alloy materials attached great importance to the countries in the world, has become one of the most active areas of research in the materials science community. W-Cu (10% ~ 40% Cu), and the W-Ag alloy combining the good electrical conductivity and thermal conductivity of copper and silver, and the wear resistance of tungsten, could be manufactured knife switch, circuit breaker, the contacts of switches in the working parts of spot welding electrodes and so on.
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To Design Your Own Tungsten Ring
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- Category: Tungsten Information
- Published on Friday, 18 January 2013 18:22
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Tungsten is considered one of the most durable ring metals out there. It ranks a mere two points less than a diamond on the hardness scale. A tungsten ring is great for hard laborers and people whose rings suffer a lot of wear and tear because it requires so little maintenance. You can custom design your own tungsten ring online through any major jeweler.
Instructions
1
Search for "make your own tungsten ring" through a major search engine such as Google or Yahoo.
2
Choose a site.
3
Choose your custom settings. This will normally include shape, size, color and an inlay. You can also specify any engraving you want on the ring as well.
4
Click "Add to Cart" or send the specifications off to the website owner.
5
Use your credit card to pay for the ring, or wait for an email and payment information.
Tips & Warnings
Inlays can be gold, white gold, etc. The shapes to pick from are usually dome, concave or flat-top, and there are several different styles.
Tungsten Jewellery Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-jewellery.com
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