How Tungsten Billet be Made
Tungsten has been used since the 1970's in making tungsten billet, because it is twice as dense as brass, a dart made of tungsten will be half the size of its brass equivalent, which means that it is easier for the player to achieve close grouping and score more.
Tungsten is found in igneous rock, then crush it to powder and the tungsten content is separated out. Next blend pure tungsten powder with Ni, Fe or Cu, ball milling the mixture, and mixed with binder such as alcohol, paraffin. Then press the mixed powder with high pressure mould into shape, sintering in a furnace at 3000ºC, then blank tungsten rod is successfully produced. The last process is grinding the blank tungsten rod to required size.
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As we know, tungsten alloy barrel forms the main part of dart. Tungsten alloy billet is now standard barrel material, for tungsten alloy barrel has a specific gravity of 19.3(20℃), making it a very dense material.
Tungsten is a very dense material, so darts with a considerable bulk can be made quite slim. The invention of tungsten darts had a big impact on the sport.
Dart flight is the fins or wings found at the back of a dart, which stabilize the dart during flight and are made of various materials.
Today's standard material of tungsten barrel is Tungsten-Nickel-Iron. Tungsten is a very dense material, so darts with a considerable weight can be made quite slim.