What Are the Preparation Processes of Tungsten Wire?

The preparation process of tungsten wire involves multiple steps and usually includes the following main stages:

Refining tungsten ore: The production of tungsten wire usually starts with refining tungsten ore, the most common tungsten ore is ammonium tungstate ore. These ores undergo a series of chemical and smelting processes to refine the tungsten into a concentrate or oxide.

Preparing tungsten powder: Tungsten powder is usually the starting material for preparing tungsten wire. The oxide or concentrate is reduced to tungsten metal, which is then crushed into tiny powder particles.

Powder Forming: Tungsten powder is mixed and shaped using molds to obtain blanks of the desired size and shape.

Sintering: The shaped tungsten billet is sintered at high temperatures to combine its particles into a dense billet. This process is sometimes called sintering or sintering.

Wire drawing: The sintered billet is gradually elongated and thinned by a wire drawing machine to obtain the required diameter of tungsten wire.

Annealing: Tungsten wire is heat treated, usually in a hydrogen atmosphere, to improve its mechanical properties and stability.

Cutting and Processing: The final tungsten wire is cut and processed as needed to meet the specifications and requirements of different applications.

Cleaning and Inspection: Tungsten wire is typically cleaned and inspected to ensure its quality and purity. This includes removing any remaining impurities or dirt and conducting physical and chemical tests.

Packaging and Shipping: Finally, the tungsten wire is packaged into rolls or coils and ready for shipping.

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