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  • The mechanism of occurrence of cracks in the deposited heated porous samples

    The article presents the results of a study of the mechanism of occurrence of cracks in the material of heated cylindrical porous powder blanks being deposited. The type of cracks is classified and the role of the boundaries between the "particles" of powder on the surface of a porous workpiece as stress concentrators contributing to the formation of cracks during its deformation is noted.

    Keywords: dynamic hot pressing, heating temperature, powder billet, pore, crack, sintering temperature, plasticity

  • Influence of some technological factors of dynamic hot pressing on the structure and properties of material of differential satellites

    The article presents the results of studies on the influence of sintering modes on the distribution of carbon in the material of a porous powder billet used for the manufacture of a differential satellite by dynamic hot pressing. The distribution of carbon and density in the satellite material is established, recommendations for its chemical and thermal treatment are given.

    Keywords: dynamic hot pressing, heating temperature, powder billet, density, satellite, sintering temperature, cementation, quenching, material property

  • Determining the transverse dimensions of the deformable workpieces

    The article presents the results of studies of the plastic properties of heated porous powder materials in the sediment tests. A technique for determining the transverse dimensions of porous billets is given, which provides their defect-free dynamic hot pressing in the matrix.

    Keywords: plastic property of the material, the study of deformability, ductility of the material, transverse deformation, heating temperature, calculation method, dynamic hot pressing, powder billet, transverse size of the workpiece and the matrix, the initial siz

  • The study of the plasticity of materials in the sedimentation of cylindrical heated powder samples

    The article presents the results of studies of the plasticity of heated powder materials from the initial porosity during the sediment tests. It was established experimentally that for the selected deformation conditions, the powder of iron powder PZh4S2 with the initial porosity of 20–30% has the greatest plasticity during the draft

    Keywords: plasticity, heating temperature, density of samples, specific work of deformation, sediment, measurement of samples, coefficients of height and transverse deformation, porosity, powder billet