This article presents an experimental determination of the powder materials splicing surfaces’ quantitative characteristics obtained by hot processing. This study analyzes the hot deformed powder material’s microstructures. We consider what changes the powder grains have undergone and what are the single crystals of different sizes, a certain configuration and color, as well as the crystallographic planes’ direction with respect to the thin section plane. In the course of the work, spheroidization of particles and their coagulation due to the absorption of small particles by large particles have been observed. The influence of the initial particles’ size on the structure formation of powder alloys by using the homogenization features during sintering has also been investigated. The deformation character of the porous steel particles’ material compacts from two types of a mixture based on coarse and fine iron powder with different porosity is considered. As a result, after sintering, an increase in semi-finished products and a corresponding increase in porosity were observed. In this case, the effect nature of the dependence on the porosity of samples of powders of various sizes on plastic deformation is traced on thin sections of the porous semi-finished products. With a greater degree of compaction, the activation of the surfaces collapsing during hot stamping of pores and their rapid coalescence after reaching physical contact are detected. The work revealed that the investigated non-porous hot-deformed steel is almost uniform in structure due to the complete deformation of all particles of various sizes original iron powder. The clear boundaries of the particles’ coalescence surfaces on the studied samples are traced. In the course of this study, certain dependences of the splicing quality on interparticle contact surfaces during hot pressure treatment of powder semi-finished products and the properties of the obtained hot-deformed powder materials on the considered technological parameters [1, 2], for example, such as the particles’ size, determining the interparticle splicing surfaces boundaries length, differences in the mixture particles’ deformability, leading to a decrease in the volume of material deformed during hot processing pouring powder semi-finished products.

Ruled surfaces (torses) are widely used when designing surfaces of machine parts, architectural projects, building structures, plow-bottom surfaces, etc. A ruled surface is generated by moving a straight line continuously in a straight line space in predetermined manner. Otherwise, a ruled surface is a one-parameter set of lines. Ruled surfaces are handy for practical application, since they can be manufactured from rectilinear elements widely provided by modern industry. All ruled surfaces are in divided into two types: developable and nondevelopable. Torses can be superposed on a plane by means of flexural deformation without strain and compression. This property of developable surfaces makes possible to easily produce them from flat materials. It is common knowledge that a torse is a surface which represents a set of lines being in contact with a given spatial line. A line which is tangent to all generatrices is called a cuspidal edge of the given developable surface. Thus, creation of spatial lines is a main point in designing developable surfaces. The article deals with algorithms of generating spatial lines by means of rolling machines for cylinders, cones and generalized torses that can be used hereafter as cuspidal edges when designing developable surfaces.