APPLICATION OF THE COMBINED FINISHING AND HARDENING METHOD FOR COMPLEX QUALITY PARAMETERS OF THE PARTS SURFACE LAYER
Вulekbayeva G.Zh. Кikvidze O.G. Тabylov А.U. Bukayeva A.Z. Suyeuova N.B.
2024National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2024#2024Issue 168 - 79 pp.
The reliability and durability of products of modern machine-building production largely depend on the quality of their surface layer, and this dictates the need to apply such processing methods, which along with the improvement of the microgeometry of the part surface would change in the right direction the structure, physical and mechanical properties and the stress state of the surface layer. The research in this article is aimed at solving these problematic issues and is carried out within the framework of the AP19680395 project Study of the stress-strain state of deposited parts and development of a method for reducing their deformations in the processes of surface plastic deformation, under grant funding from the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan. The conducted research has shown that one of the most efficient and environmentally friendly methods of machining parts by surface plastic deformation is the process of smoothing. The combined technology of surface plastic deformation, combining rigid and elastic smoothing with the use of a combined tool with rigid and elastic indentor fastening is considered. It is established that this tool design comprehensively provides parameters of the quality of the surface layer of the working surfaces of critical parts due to different element radii. A system of automatic provision of the set interference, based on computer analysis of vibration signals and determining the ultra-precise adjustment of the combined tool is presented. It is shown that the tool makes it possible to comprehensively ensure the quality parameters of the surface layer of the parts. At the same time the process can be carried out at sufficiently productive modes. The use of a system for automatically ensuring the set interference during smoothing makes it possible to adjust the force parameters of the process with high accuracy. It has been established that as a result of hard-elastic smoothing a microstructure with a homogeneous dense hardened layer is formed in the surface layer, forming a regular surface roughness profile of a favorable blunted form, and providing increased wear resistance of the part surface layer and its correct geometric shape. Application of this technology makes it possible to form a layer-by-layer structure of the part surface layer with high-altitude roughness parameters in the nanometer range, thus ensuring high operational properties of the parts.
finishing-strengthening treatment , hard and elastic smoothing , indentor , microstructure , Surface layer of the part , surface plastic deformation , surface roughness
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Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
Akaki Tsereteli State University, Kutaisi, Georgia
Caspian University of Technology and Engineering named after Sh. Yessenov
Akaki Tsereteli State University
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