Grybkov E. Development of scientific bases and improvement of equipment and technologies of deformation products of metal-powder core in the shell

The object of study: the processes and equipment for the production of long products as metal powder in the shell. Objective: to improve technical and economic performance of manufacturing processes of long products as metal powder in the shell by developing of scientific bases of deformation of powdered materials together monomaterials and improve technology and equipment. Methods: methods of elasticity, plasticity, finite differences, finite elements, physical modeling, field research, methods of strain gauges, methods of mathematical statistics. Theoretical and practical results: mathematical models of stress-strain state of the material and the main indicators of quality in the manufacture of long products from metal powder in the shell; algorithms aided design of technological modes of rolling, drawing and rolling powder in the shell; improved installation for experimental determination of physical and mechanical properties of powders; new methods and apparatus for the production of powder tapes and wires; practical advice and scientific reasonable technical solutions for improving the technology and equipment. The novelty: first time for the production processes of long products with metal powder was determined the influence of shell on parameters of the center of deformation and quality of finished products; first time for powder tapes rolling processes was established laws for forming powder density and energy-power parameters depending on the shape and material of the shell; the first time for the process of flattening cored wire was established laws forming tape geometry, density and core values of energy-power parameters depending on the thickness and material of the shell; for the process of drawing cored wire in the shell was clarified formation mechanism of quality products depending on the reduction tension wire and size shell. Degree of implementation: technological modes of production, technical solutions, practical advice and software products. Scope: heavy and power engineering, industry research institutes.