Mixing tungsten with carbon creates a strong material called tungsten carbide. The material has become increasingly popular in many industries around the globe. Its uses range from construction tools to jewelry to weapons.

Facts
Tungsten's atomic number on the Periodic Table is 74; its atomic symbol is W. The element is highly resistant to bases and acids. Tungsten's melting point of 3,422 degrees Celsius is the highest of any metal. Hard by itself, tungsten becomes even more durable when combined with carbon, as well as nearly scratch resistant.

Uses
Tungsten carbide is used to make cutting tools for metalworking, drilling construction and mining. Its strength makes it a popular material for jewelry, such as rings, bracelets and necklaces. Weapons makers use tungsten carbide to produce armor-piercing ammunition.

Comparisons
Tungsten carbide is a much more versatile material than most other metals. It is four times as hard as titanium and twice as hard as steel. Tungsten carbide is much more heat resistant than both metals as well.

History
Tungsten was discovered in 1758 and first separated from wolframite in 1793. In the 20th century, tungsten carbide became best known as the material for light bulb filaments. Tungsten carbide was widely used in World War II for making weapons.

Sources
Leading producers of tungsten carbide include China and Russia. Canada, Bolivia and the United States have large reserves. Some 30,000 tons of tungsten carbine are produced annually.


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Some tungsten carbide end mills that have been used can be reground to use over again. This saves money and can often be done in the shop while a cycle is being run or by another machinist when he has some down time.

Benefits
Regrinding end mills allows them to be reused which can save a machine shop hundreds of dollars a year. Some end mills are used for profiling only and the dull area can be removed and the bottom reground for further use.

Procedure
Cut the used area off using a cut-off saw. Place the end mill in an end mill sharpening holder, which set the end mill at the right angle for regrinding. Grind the bottom of the end mill to achieve a new, sharp edge for bottom cutting using a surface grinder.

Considerations
If you do not have the capabilities to regrind the end mills in your shop, you can have it done professionally. If the price is less than a new end mill, that route would be preferred to buying new end mills.


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With very sharp cutting edges and slot type, the cutting force of tungsten solid carbide cutting tools is small in aluminium alloy machining, and it also include the advantages of high chip space and smooth chip removal. So gradually the solid tungsten carbide cutting tools replaces of the high speed steel cutting tools.

In addition, the elastic modulus of tungsten carbide is about 3 times of steel, which means that under the same load, the deformation of tungsten solid carbide cutting tools is only a third of indexable cutting tools. As helical tooth end mill, solid tungsten carbide end mill can smoothly cut into and out. Its chip removal is also very smoothly, all of that helps to decrease the fluctuation of cutting force to restrain the vibration trends.

Tungsten solid carbide cutting tools system can bring potential advantage for aluminum rough machining and finish machining, especially the use of 25 to 100 mm medium to large cutting tools. To be used for aluminum alloy processing, tungsten solid carbide cutting tools has better security, versatility,higher metal removal rate and unparalleled performance without grinding again. However, many cases of finish machining can't reach the required level. But now, Sandvik Coromant’s CoroMill790 can achieve this through new cutting edge, blade, blade bearing and the clamping technology.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Email: sales@chinatungsten.com
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1. Attach the diamond wheel to your bench grinder. Refer to your manual to ensure that the wheel is properly attached and the grinder itself is appropriately mounted.

2. Hold your tungsten carbide tool against the rest beneath the wheel. Touch the tip to the wheel, but do not turn on the grinder yet. Adjust the rest as needed so that you achieve the necessary grinding angle for your particular tool. Many rests will allow you to adjust both the height and the angle of the rest.

3. Remove the tool from the rest, then turn on the grinder. Touch the tip of the tool to the moving wheel, just as you did before when determining the angle, and use the rest to guide the angle of the grinding. Carbide may emit short red sparks during grinding. These are normal. The carbide tool may also become very hot. Work in short intervals and do not burn yourself, overheat the tool or touch the tool immediately after grinding. Continue grinding until the tool is sharpened.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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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