In the paper there is shown the topicality of theoretical researches of processes arising in a surface layer of materials at combined machining methods. The peculiarities of thermal processes development in a surface layer of grey iron at high speed heating are considered. On the basis of the solution of a thermal conductivity differential equation the influence of heat source parameters (heat flow density, coefficient of concentration and movement speed) upon characteristics of a temperature field in a surface layer of material worked. The quantitative correlations of dimensions of an area of phase changes in a surface layer at a constant value of heat flow density and at the ensuring of constancy of maximum temperature value on the surface worked are determined. The characteristics correlation of a temperature field at the change of a coefficient of concentration and flow density of a heat source is revealed.
heat source, heat flow density, coefficient of concentration, phase change temperature, grey iron
1. Grigoriyants А.G., Shiganov I.N., Мiryusov А.I. Tech-nological Processes of Laser Working / under the editorship of А.G. Grigoriyants М.: Publishing House of Bauman STU of Moscow, 2008. pp. 664.
2. Iskhakova G.А., Rakhimyanov Kh.М. Investigation of microstructure and stress-strain properties of a steel 45 surface layer after plasma thermo-strenghtening // Material Electron Processing. 1987. № 5. pp. 24-27.
3. Rakhimyanov Kh.М., Yeryomina А.S. Low-carbon steel case-hardening at heating in electrolytes // Strengthening Technologies and Coverings. 2006. № 3. pp. 9-13.
4. Suminov I.V., Belkin P.N., Epelfeld А.V. and others. Plasma-Electrolyte Modification of Metal and Alloy Surfaces / under the general editorship of I.V. Suminov. In 2 Vol., Vol. 1. М.: Technosphere, 2011. pp. 464.
5. Rakhimyanov Kh.М., Semyonova Yu.S. Prediction of geometrical state of cylinder part surfaces made of steel 45 at ultrasonic surface plastic deformation // Metal Machining (Techniques, Equipment, Tools). 2011. № 3. pp. 11-17.
6. Technological Processes of Surface Plastic Deformation / А.V. Кirichek, V.Yu. Blumenstein, S.А.Zaides, Kh.М. Rakhimyanov and others; under the editorship of S.А. Zaides. Irkutsk: 2007. pp.404.
7. Ivantsivsky V.V., Rakhimyanov Kh.М. Quality technological support of machine parts surface layer at integration of surface thermal and finish machining // Strengthening Technologies and Coverings. 2005. № 6. pp.43-46.
8. Rakhimyanov Kh.М., Iskhakova G.А. Surface strengthening with use of low-temperature plasma and ultrasound // Material Electronic Processing. 1990. № 5. pp. 9-12.
9. High-energy processes of material processing / Solonenko О.P.,Alkhimov А.P., Marusin V.V., Rakhimyanov Kh.М. and others.; executive editor. М.F. Zhukov, V.М. Fomin. Novosibirsk: 2000. Vol.18. Low-temperature Plasma, pp. 425.
