Development of a method of producing infiltrated low-porosity tubular powder products

Infiltration of a porous frame made of a refractory material by molten low-melting metal is one of the widely used methods of formation of low-porosity components. Infiltration makes it possible to produce composite materials that are difficult to produce by the conventional methods of powder metallurgy, increasse the density and physical-mechanical properties of products, and decrease the nonuniformity of the distribution of residual porosity. In order to optimize the technological parameters of production of infiltrated tubular low-porosity components, investigations were carried out into the relationships governing the compacting, mechanical properties, and degree of uniformity of the distribution of the material. Experiments were carried out with iron powder and copper.