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Development of Tungsten-Copper Shaped Charge Liners by Metal Injection Moulding of Ultrafine Composite Powder

  • : Jiupeng Song 1, Yang Yu 1, Wei Wang 1, Mingliang Ouyang 1, Daoxing Ye 1, Zhigang Zhuang 2
  • : 1 Xiamen Honglu Tungsten & Molybdenum Industry Co. Ltd, 2 Xiamen Tungsten Co. Ltd
  • : 2013, Vol 1, p. 253-258
  • : PDF Download
  • : 2013

Abstract

Shaped charges are widely used for perforations in the field of oil and gas production. Tungsten-copper (W-Cu) is an attractive material for shaped charge liner due to the combination of the high density of W and the good plasticity of Cu. However, W and Cu are not mutually soluble. It is difficult to fabricate the W-Cu pseudo-alloy with a very homogeneous microstructure by using conventional Cu infiltration or mixed powder, which is important for the shaped charged liner to form a stable metal jet during explosion. To solve this problem, a type of submicron W-Cu composite powder has been developed by thermo-chemical process. With the utilization of metal injection moulding (MIM), the near net-shaping of a type of shaped charge liner in W-25Cu has been realized. The resulted material has a microstructure with the submicron W particles distributing homogeneously in the Cu matrix.

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