Powder metallurgy rheo-pressing material for large components and use thereof

Abstract

The application provides a powder metallurgy rheological pressure injection material for large components and application thereof. The powder metallurgy rheological pressure injection material is composed of raw material powder and an organic binder. In the powder metallurgy rheological pressure injection material, the volume fraction of the raw material powder is 50% to 62%, preferably 55-62%. The raw material powder is selected from at least one of metal powder, ceramic powder and cermet composite powder. The powder metallurgy rheological pressure injection material for large components provided by the application has good fluidity and thermal stability during the rheological pressure injection process. The organic binder and the raw material powder have the characteristics of high interfacial wettability. When heated to above the softening point temperature of the organic binder, good flow is generated under the action of certain pressure and temperature, the material is injected into a mold cavity through a flow channel, dense filling is realized, and a high-uniform and high-dense blank of a large component is obtained, so that the densification process is realized.

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