Tungsten (Wolfram)
Tungsten ( wolfram): Very hard, heavy, steel-gray or white in color, one of the transition metals, tungsten, wolframite and scheelite mineral found in contains. Tungsten, and alloys of substances having strong physical structure of the high melting temperature is a key ingredient. Metal does not occur in nature.
Copper and tungsten is obtained as by-products during the processing.
Metallic molybdenum, molybdenum oxide or ammonium molybdate generally be obtained by reduction with hydrogen is obtained by dissolution of the molybdenum powder. tungsten carbide used in the production of hard materials used to make the abrasive wear-resistant. The current tungsten consumption areas, cutters, knives, drills, circular saws, milling machines and lathes are metal processing.