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Spherical tungsten powder is processed by 3D printing

  • Mosten
  • 5 Aug

As an important raw material for tungsten production, the physical and chemical properties of spherical tungsten powder (W) directly affect the quality and use of tungsten products. Under normal circumstances, the higher the purity of powder and the lower the oxygen and carbon content, the better the thermodynamic properties of tungsten processing materials. However, the physical and chemical properties of powder are not the only factors that determine the quality of tungsten products. The performance of tungsten parts is also restricted by the production process. Compared to traditional powder metallurgy, 3D printing is more suitable for tungsten components for several reasons:

Powder metallurgy is the process of making various shapes of products by using metal powder as raw material through forming and sintering. The advantages are: 1) can process special materials; 2) High material utilization rate; 3) Mass production; 4) High accuracy of material distribution. The disadvantages are: 1) the product strength and toughness is poor; 2) Can not be made into large products; 3) Only some parts of simple structure can be prepared; 4) The cost of pressing die is higher.

3D printing technology, also known as additive manufacturing, is a kind of technology based on digital model files, using metal powder and other adhesive materials, through layer by layer printing to produce parts. The advantages are as follows: 1) Strong production capacity, mainly reflected in simple operation and high portability of 3D printer; 2) Can produce complex parts which can not be produced by POWDER metallurgy; 3) Low production cost and short production cycle; 4) The product has high precision, and the comprehensive performance is superior to the products made by powder metallurgy; 5) Green environmental protection, the whole process less by-products. The disadvantages are as follows: 1) higher requirements for the performance of metal powder; 2) If the operation is improper, the product will also have microcracks.

After the introduction of the above content, we can clearly know that 3D printing technology is more suitable for processing spherical tungsten powder than powder metallurgy. In recent years, with the progress of science and technology, the former has gradually replaced the latter.

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