Tungsten Product

Product
Tungsten Bar 655

Tungsten bar has the characteristics of high melting point, high density, low vapor pressure and low thermal expansion properties. It also offers good thermal conductivity, sufficient electrical resistance, and high modulus of elasticity. It can be sintered or swaged. And it is available in thicknesses of 0.1~15mm and size up to 450x1000mm. Forging and Annealing Process of Pure Tungsten Bar The sintered pure tungsten bar was forged by different average forging ratio and forging method, then was annealed with different…

Product
Tungsten Tube 643

Tungsten tube may be prepared by chemical vapor deposition (CVD). CVD technology is an important method for producing pure tungsten products. In the late 1980s, it has been reported that CVD technology was used to prepared high-density, high-purity tungsten products abroad. In recent years, a large number of researches on the process, microstructure, and properties of CVD tungsten coatings also have been carried out in China. The tungsten tube produced by CVD technology may appear crack. And the cracked tungsten…

Product
Tungsten Pin 628

Tungsten pin may be prepared by electrolytic process using thin tungsten wire as raw material, which has advantages of high hardness, good rust resistance and strong ductility. And the pin made of tungsten is not easy to break so that it is durable with long service life. What is more, it can be reused after electrolysis if there is wear or tear. Tungsten Pin Prepared by Electrolysis 1. Experimental material: (1) Thin tungsten wire, diameter of 0.32mm, length about 5cm.…

Product
Sintering Tungsten Boat 338

Sintering tungsten boat means the tungsten boat that is applied for sintering tungsten oxide to produce tungsten powder (W powder). This type of tungsten boat has good thermostability at high temperature, so that it can be used in sintering process. The sintering tungsten boat is an important carrier for the preparation of tungsten powder, which reduces the adverse effects of harmful constituents (water, oxygen, nitrogen) on W powder under vacuum sintering. It also helps to eliminate the adsorbed gas, the…

Product
Evaporating Tungsten Boat 377

Evaporating tungsten boat is referred to as the tungsten boat that is widely applied in the vacuum evaporation coating industry. This type of tungsten boat is used at high vacuum environment so that its demand of work environment is relatively strict. The evaporating tungsten boat is different from other types of tungsten boat in: This type of tungsten boat is generally composed of a tungsten boat cover and a tungsten boat body. Generally, there are evaporating round hole on the…

Product
Riveting Tungsten Boat 337

Riveting tungsten boat means the tungsten boat that is obtained by riveting a plurality of tungsten plates together. The strength of this type of tungsten boat is high. And its assembly and disassembly are flexible. The assembly can be disassembled and can be reassembled. Therefore, it is easy to replace the damaged parts or troubleshoot faults. It is flexible, simple, and relatively inexpensive. Riveting Tungsten Boat Production Process 1. Drill holes in the connection part of tungsten plate, and then…

Product
Welding Tungsten Boat 339

Welding tungsten boat means the tungsten boat is produced by welding some tungsten plates into one “boat” at high temperature. The size of the tungsten boat prepared by welding process is relative large. And it can be used to vaporize large-scale devices or evaporate a large amount of materials. Also, it has good high temperature resistance under 2600°C. Compared with riveting tungsten boat, welding tungsten boat can save 10%-20% of tungsten material, and can also reduce the complex processes such…

Product
Folding Tungsten Boat 321

Folding tungsten boat means the tungsten boat is produced by repeatedly forging and folding, and folding both ends of the plate finally. The tungsten boat is characterized by high hardness and high toughness. Since the ends of this type of boat have been folded for many times, it has the ding of reinforcement, improving the quality. Producing Process of Folding Tungsten Boat 1. Stamp the tungsten plate into the sheet that meets the requirements on size. 2. Bend the sheet…

Product
Stamping Tungsten Boat 308

Stamping tungsten boat is referred to as the tungsten crucible is prepared by stamping process. That is to say, the tungsten boat is produced by hot stamping to plastically deform the tungsten plate into “boat”. Stamping tungsten boat has the characteristics of stable quality, high precision in size and shape, high yield, high hardness, good abrasion resistance, high temperature resistance, low cost, excellent electrical and thermal conductivity. What’s more, it is not easily to be damaged with long working life.…

Product
Spinning Tungsten Crucible 629

Spinning tungsten crucible means the tungsten crucible is produced by spinning process, with high purity above 99.95%, density of 18.5-19.0g/cm3 and outer diameter of 50-300mm. Spinning tungsten crucible has the characteristics of good quality, nice tensile strength, high hardness and high density, but it is difficult to operate as the hot rolling process and the spinning process are complex. Producing Process of Spinning Tungsten Crucible The tungsten sintered compact is prepared by powder metallurgy method, and is hot-rolled into thin…

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