IMPROVING THE PROCESSING QUALITY OF CYLINDER LINERS USING COMBINED TECHNOLOGY

Authors

DOI:

https://doi.org/10.20998/2078-7405.2022.96.13

Abstract

Due to the use of surface engineering methods, a combined technology for processing the working surface of internal combustion engines cylinder liners has been developed. The advantages and disadvantages of traditional liners processing technologies are analyzed, which allowed identifying ways to improve them. A new technological process of cylinder liners processing is proposed, which includes operations of deforming broaching and finishing antifriction non-abrasive treatment. The technological equipment and tools for the chosen technological process realization are chosen. Experimental studies of the proposed technical solutions feasibility are carried out. The microrelief of the treated surface, roughness parameters, hardness distribution according to the wall thickness were determined for the studied liners, and the amount of wear was determined for the liners after running-in. Parameters analysis of geometric, mechanical and tribological characteristics of the liners working surface, processed by the existing and proposed technology showed significant advantages of the latter. There is an increase in the productivity of processing part up to 4 times, reducing the cost of the tool up to 3 times, and in general – reducing the cost of restoring the liner. It is proved that the use of the proposed technology allows improving the physical-mechanical characteristics of the working surface: strengthening the surface layer to a depth of 0.3 mm, as well as obtaining a roughness close to the operational.

Author Biographies

Nemyrovskyi Yakiv , Central Ukrainian National Technical University, Kropyvnytskyi

Doctor of Technical Sciences, Professor, Department of Ecology and Environment Protection, Professor, Central Ukrainian National Technical University, Universytetskyi ave., 8, Kropyvnytskyi, Ukraine, 25006

Shepelenko Ihor, Central Ukrainian National Technical University, Kropyvnytskyi

Doctor of Technical Sciences, Associate Professor, Department of Exploitation and Repairing Machines, Professor, Central Ukrainian National Technical University, Universytetskyi ave., 8, Kropyvnytskyi, Ukraine, 25006

Osin Ruslan, Central Ukrainian National Technical University, Kropyvnytskyi

PhD, Associate Professor, Department of Exploitation and Repairing Machines, Associate Professor, Central Ukrainian National Technical University, Universytetskyi ave., 8, Kropyvnytskyi, Ukraine, 25006

Posviatenko Eduard , National Transport University, Kyiv

Doctor of Technical Sciences, Professor, Department of Repair and Materials, Professor, National Transport University, Mykhailа Omelianovycha-Pavlenka str., 1, Kyiv, Ukraine, 01010

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Published

2022-03-02

Issue

No. 96 (2022): Cutting and Tools in Technological Systems

Section

Mechanical processing of materials, the theory of cutting materials, mathematical and computer simulation of machining p

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