Traditional weight throw was made by iron or lead but tungsten alloy weight throw is more and more popular because of its advantages such as high density, high melting point, small volume, excellent hardness, superior wearing resistance, high ultimate tensile strength, high ductility, high temperature resistance, etc. Tungsten alloy is a perfect material to make weight throw especially to make the sphere.

The high density of tungsten alloy can improve the speed and length when throwing, in this way, tungsten alloy weight throw can help the competitors to catch a high score. Non-toxic and environmental friendly of tungsten heavy alloy is another advantage for tungsten heavy alloy to make tungsten alloy weight throw. It is the durable material and can be used recycling. Tungsten heavy alloy is also very easy to machine, the manufacturer can save a lot of time in the processing of making tungsten alloy weight throw. Tungsten heavy alloy has strong wind resistance, when the match is held in a windy day; the wind can has little bad influences for the match if the weight throw was made by tungsten alloy. Good corrosion resistance is another advantage for tungsten heavy alloy to make weight throw, after using a lot of times by different competitors, weight throw cannot be eroded by the users sweat.

Because the density of tungsten is higher than steel, iron and lead. So compared with the tungsten alloy weight throw, the weight throw made of steel, iron or lead are larger than the tungsten alloy weight throw, which make them not convenient to throw, and compared with the tungsten alloy material, they have larger air resistance. On the other hand, the tungsten alloy weight throw has better directionality when it is thrown by the athlete. In a word, tungsten alloy weight throw can help to improve the scores, so tungsten alloy is the best choice in the match.



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For the technical realization of low-pressure plasma processes, one requires equipment with the following components:
Vacuum system (pump, vessel)
Energy supply
Gas supply
Measurement and control components for the reproducible adjustment of the process parameter

Due to the necessity of a vacuum system in most cases, batch operation method is the easiest solution. The processes can be flexibly and complexly configured, in order to change the mode of action of the tungsten alloy plasma technique through variation of the process parameters (pressure, gas flow, gas composition, power) and can attain different effects in one process step. So that, i.e. without great expenditure a secondary cleaning can be carried out and immediately thereafter a corrosion protection layer becomes deposited, without having to aerate in between.


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Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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Tungsten alloy plasma technique can be used in many different cases whenever you would like to better adhere materials together or to change a surface property to suit your needs. With this trend-setting technology it is possible to modify virtually any surface. tungsten alloy plasma technique offers several versatile applications, for example:

Cleaning surfaces of any residues, oils, or contamination
Activation of various materials before gluing, painting, etc.
Etching and partial removal of surfaces
Coating of parts with several possible types of layers (PTFE-like, protective barriers, hydrophobic, hydrophilic, friction-reducing, etc.)

Tungsten alloy plasma technique is establishing itself in all areas of industry, and new applications are constantly evolving.


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Applications which might gain more importance in the future are construction material for the tungsten alloy plasma technique in magneto hydrodynamic power generation (W and W-Cu) and target plates in fusion reactors (W, W-La2O3).

Recent tungsten alloy plasma technique and theoretical and numerical studies show that tungsten may be the best, if not the only, material to withstand the extraordinary operating conditions in a nuclear fusion reactor diverter. The diverter, being that part of the vacuum vessel where the tungsten alloy plasma technique particles interact with the first wall, and where a large fraction of the fusion heat is removed, consists of water-cooled copper heat-exchanger element covered with a plasma facing armor. The tungsten alloy plasma technique particles (electrons, protons, and α-particles) are directed by the magnetic field toward the diverter target plates, where they are neutralized and pumped. The convective heat flux reaches 20 MW.m-2 and the attendant surface temperature more than 3000℃. Therefore, a suitable armor material must have a high thermal conductivity (in order to transfer high heat fluxes), low thermal expansion coefficient and low Young's modulus (in order to keep thermal stresses low), and a high melting point and low sputtering yield (in order to keep erosion low). Although tungsten does not have as high a thermal conductivity and as low a Young's modulus as carbon-carbon composite materials, which are foreseen for the sections of the diverter with the highest heat flux, many experts believe that, in the long run, reasonable lifetimes will only be achieved by tungsten diverter plates, which have the lowest erosion rates of all materials in sections of the diverter with relatively low plasma temperature but high particle density.



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Tel.: 86 592 5129696; Fax: 86 592 5129797
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