Tungsten & Sapphire Growth Furnace Price

Tungsten Rod

Details: Category: Tungsten Information; Published on Wednesday, 29 April 2015 09:39; Written by xiaoshan; Hits: 484

Tungsten rod, which includes tungsten bar, tungsten steel bar and sintered tungsten rod, is mainly used in the following areas:

Turning tool bit for processing; tungsten filament of lighting equipments; variety of heat conductor.
Car bent axle; bits and pieces of cylinder barrel; ingredients for forging heat-resistant steels.
Manufacturing of gun, artillery, rockets, satellite, aircraft and ship.

Tungsten rod has a reputation of good wear resistance, high hardness after quenching and tempering and good performance under the high temperature.

Chinatungsten offers customized pure tungsten rods with good design and appropriate size.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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A Method of Tungsten Target Manufacture

Details: Category: Tungsten Information; Published on Tuesday, 28 April 2015 17:16; Written by xiaoshan; Hits: 435

This is an invented way of tungsten target manufacture which involves the following procedures.

Machine the surface of tungsten target blank.
Place the machined blank into the vacuum bag and then drain away the vacuum.
Forge the blank in the vacuum bag.
Calendar the forged blank.
Cool and remove the vacuum bag.

This way is mold-free and can effectively defend the surface of blank from cracking and oxidizing while processing. The structure of tungsten target made by this way is well-distributed with suitable grain size that sputtering target required. What is more, this sort of tungsten target can be processed with ease under low scrap rate. The method is particularly in need when manufacture large-sized tungsten target.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
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Advantages of Tungsten Carbide Cutting Tools for Physical Vapor Deposition Method

Details: Category: Tungsten Information; Published on Tuesday, 28 April 2015 13:48; Written by limei; Hits: 582

There are many tungsten carbide cutting tools coating preparation methods, vapor deposition is the main method of preparing tungsten carbide cutting tools coating which divided into vapor deposition comprises physical vapor deposition (PVD) and chemical vapor deposition (CVD). Compared with the CVD coating technology, PVD coating technology has the following advantages:

1. PVD coating depositing a low temperature, can be 200 ~ 600 ℃ and other superhard TiN coating deposition below, it will not reduce the bending strength of the original base material, between the coating and the substrate does not produce η phase, so no special carbide material, expanding the range of applications;

2. PVD coating has a fine structure, the internal compressive stress in the coating, anti-crack growth;

3.PVD coating can coate the surface smoothly, more effective than the CVD coating to prevent cross crack rake face, but also can reduce the friction coefficient;

4.Useing the sharp edge of the tool as a matrix which is very important for high-speed cutting.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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The Type and Application of Tungsten Needle

Details: Category: Tungsten Information; Published on Tuesday, 28 April 2015 15:34; Written by xiaoshan; Hits: 481

Cerium tungsten electrode:

Cerium tungsten electrode is an environmental friendly product for it has no radioactive contamination. With small current the cerium tungsten electrode can do arc striking easily and its arc current is also low. Under the condition of d-c low current, cerium tungsten electrodes enjoy a tremendous popularity and are of more superiority being applied in welding of pipes and small parts, intermittent welding and specific welding.

Thorium tungsten electrode:

Thorium tungsten electrodes are widely used in the America and some other countries for its excellent comprehensive purposes. One of its advantages is the sustaining capacity for overload current. However, because of slight radioactive contamination, thorium tungsten electrodes are partly limited in some fields. The main application of thorium tungsten electrode is d-c welding between carbon steel, stainless steel, nickel alloys and titanium.

Lanthanum tungsten electrode:

The welding capacity of lanthanum tungsten electrode is very good and its conductive property is thought to be the most match to that of 2% thorium tungsten electrode. With no radioactive harm, this sort of electrode is very user-friendly that an electric welder can easily use this convenient alternative without changing any operating procedure. So in Europe and Japan, lanthanum tungsten electrode has being the most popular alternative to 2% thoriated tungsten electrode. Lanthanum tungsten electrode is mainly used in d-c welding but also do well in a-c welding.

Zirconium tungsten electrode:

Zirconium tungsten electrodes do well in a-c welding with its end shaped a round ball and process more stable arc than pure tungsten electrode. There are no other alternatives to match expecially to its excellent work under the high load. Zirconium tungsten electrodes also has a reputation for its corrosion resistance. They are mainly used in a-c welding of magnesium, aluminum and its alloys.

Pure tungsten electrode:

Pure tungsten electrode is the cheapest kind among all the types, suitable for a-c welding of magnesium, aluminum and its alloys.

Yttrium tungsten electrode:

During the process of welding, yttrium tungsten electrode can be compressed to a large extent with slender arc beam. The fusion penetration peaks under the medium and large current. It's now mainly applied in military and aerospace fields.

Composite electrode:

Composite electrode is combined with more than two rare earth oxides which complement each other, pomoting the welding performance.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Tungsten Carbide Cutting Tools Coating Substrate Graded

Details: Category: Tungsten Information; Published on Tuesday, 28 April 2015 13:45; Written by limei; Hits: 460

The bonding strength of tungsten carbide cutting tools coating and tungsten carbide substrate is the key factor in tungsten carbide cutting tools life. Tungsten carbide cutting tools coating must be combined with suitable tungsten carbide substrate to achieve the desired performance.Due to the different thermal stress and thermal expansion between materials, the coating material is generally brittle crack more easily to the surface of the coating matrix expansion during cooling.

In order to prevent it and contribute to achieving high performance of tungsten carbide cutting tools, tungsten carbide substrate can be a gradient process. Because of its good toughness can absorb energy and thus crack can effectively prevent cracks extend to the inside of the alloy, improve the life of tungsten carbide cutting tools.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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