Tungsten Oxide/Trioxide Price

How Much Tungsten in the Darts?

Details: Category: Tungsten Information; Published on Tuesday, 07 May 2013 13:37; Hits: 2374

Tungsten darts come in many different varieties and percentages. You will see the most common being 70%, which usually means 70% tungsten, 30% nickel. In older sets tungsten was sometimes mixed with copper; however those are very unusual to find anymore. However, you can find darts with a trace of tungsten up to about 98% tungsten in the more expensive sets. Remember the more tungsten you buy, the darts will hold up better, last longer, and be thinner, which will help your shooting.

50-70% Tungsten - will usually cost less than $40 and will be sold at larger chain stores and sporting goods stores. You really have to watch out for cheaper, mass produced imports in this category. These will be very common, but not the best darts for the long haul.

80% Tungsten – will usually cost $20-$50 and I would consider these the most common darts sold to league players. Many of the players in our lower conferences (newer, inexperienced, shooters) use these darts. You can find these online, vendors at dart tournaments, and occasionally at a sporting goods store with a larger selection of dart supplies.

90% Tungsten – will usually cost $50-$100 and can be found online from numerous retailers. These darts are most common with guys in the league that I would consider regulars. They have worked on their game some and have slipped into a pretty consistent way of shooting. There are numerous manufacturers to choose from with a wide variety of models, this is where an individuals feel will come into play. You really need to pick a few of these up and see what is the most comfortable for you.

95-98% Tungsten – will usually cost more than $100 to purchase, not running more than $200 on a consistent basis. These darts will be extremely thin and if you have real potential for developing your game into an elite shooter I recommend these. When I say elite shooter, which means local for your area also, not just the professionals. If I could find the time to shoot every night to really work on my game, then I would definitely consider investing in these darts, because they will really help with groupings of the darts.

Depending on your level of interests in darts, there is a large variety of tungsten darts to purchase, remember to read the packaging carefully to find out exactly the amount of tungsten you are getting for your money.

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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XM578 Cartridge

Details: Category: Tungsten Information; Published on Tuesday, 07 May 2013 13:20; Hits: 2525

From 1965 to 1972, the US Army conducted a parallel development program for the 152mm XM578 cartridge, which was co-developed with the prototype MBT-70 Tank. The XM578 cartridge used a tungsten alloy that was slightly denser than the British alloy, consisting of 97.5 percent tungsten and 2.5 percent binder, which had a density of 18.5 gm/cc.

In response to the new operational requirements, military developers evaluated a succession of metal alloys. Initially, the British government developed a higher density tungsten alloy consisting of 93 percent tungsten and 7 percent binder tungsten alloy (WA). The new WA alloy had a density of 17 gm/cc -- versus 13 gm/cc for tungsten carbide.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
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Arc starting of TIG Welding

Details: Category: Tungsten Information; Published on Tuesday, 07 May 2013 12:54; Hits: 2292

The welding arc can be started by scratching the surface, forming a short-circuit. It is only when the short-circuit is broken that the main welding current will flow. However, there is a risk that the electrode may stick to the surface and cause a tungsten inclusion in the weld. This risk can be minimised using the 'lift arc' technique where the short-circuit is formed at a very low current level. The most common way of starting the TIG arc is to use HF (High Frequency). HF consists of high voltage sparks of several thousand volts which last for a few microseconds. The HF sparks will cause the electrode - workpiece gap to break down or ionise. Once an electron/ion cloud is formed, current can flow from the power source.
HF is also important in stabilising the AC arc; in AC, electrode polarity is reversed at a frequency of about 50 times per second, causing the arc to be extinguished at each polarity change. To ensure that the arc is reignited at each reversal of polarity, HF sparks are generated across the electrode/workpiece gap to coincide with the beginning of each half-cycle.

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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How to Choose Tungsten Darts

Details: Category: Tungsten Information; Published on Tuesday, 07 May 2013 13:05; Hits: 2218

Tungsten darts are not cheap, in fact they can be very expensive the more tungsten you get. However if you are looking to work on your dart game, these are the best darts to purchase. They are the choice of professional darters and are the logical choice for the most effective shooting.

Tungsten is a naturally occurring mineral that appears grayish in color and is always found combined with other minerals when mined from the Earth. The compounds mined the most are wolframite and scheelite. On its own tungsten is a very dense mineral with a high melting point, this density is what makes it ideal for darts. Over 75% of the mining production occurs in China.

The dense material allows the dart to be the same weight as other darts, but up to half the size. This allows the darter to throw tighter groupings with all three darts. So, it is easier to throw a ton80 (three triple twenties) with tungsten darts then it would be with wooden, brass, or nickel darts.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten Picture Center: http://picture.chinatungsten.com
Tungsten Video Center: http://v.chinatungsten.com
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Pure Tungsten (99.95%)Technical Data

Details: Category: Tungsten Information; Published on Tuesday, 07 May 2013 12:51; Hits: 2299

Tungsten has the highest melting point (3422°C) of all the non-alloyed metals. It can keep its strength and stiffness at high temperatures. Tungsten has good thermal conductivity, excellent corrosion resistance, and lowest thermal expansion of any pure metal.
Tungsten is suitable for aerospace and high temperature uses which include electrical, heating, and welding applications. Hardness and density properties make this metal ideal for making heavy metal alloys such as copper tungsten that are used in armament, heat sinks, and high density applications.

Pure Tungsten (99.95%)Technical Data
Density	19.3g/cm3
Melting Point	3410±20°C
Boiling Point	5900-6000°C
Thermal Expansion	4.36′10-6/K
Electrical Resistivity (20°C)	5.5′10-8Wm
Thermal Conductivity	167W/m.K
Modulus of Elasticity (20°C)	410 GPa
Mohs hardness	7.5
Vickers hardness	3430MPa
Brinell hardness	2570MPa

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