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Machine-building Technologies
ArticleName Technological aspects of wear-resistant coating treatment on the surface of a cutting tool
DOI 10.17580/cisisr.2021.02.21
ArticleAuthor A. E. Litvinov, V. Yu. Buzko, E. Yu. Balaev, A. I. Goryachko

Kuban State Technological University, Krasnodar, Russia:

A. E. Litvinov, Dr. Eng., Associate Prof., I. a. Head of Dept. of Surface Transport and Mechanics, e-mail:
V. Yu. Buzko, Cand. Eng., Director of the Center of Prospective Technologies and Nanomaterials
E. Yu. Balaev, Senior Lecturer, Dept. of Surface Transport and Mechanics
A. I. Goryachko, Engineer, Center of Prospective Technologies and Nanomaterials


The article presents a method for producing a nanostructured wear-resistant high-hardness coating with high physical, mechanical and strength characteristics, resistance to shock and vibration loads on the surface of spring-spring and tool steels used in the manufacture of cutting tools, including band saws. Technological modes were selected for the entire cycle of coating deposition of the developed compositions that have high adhesion to substrates made of steels of various grades, as well as provide high microhardness due to the nanostructure of the protective coating obtained on the surface. Studies are shown on the example of one of the most common methods of metal cutting — cutting on band-cutting machines, using closed band saws as cutting tools made of spring-spring steels with obtained carbide cutting edges. Since in modern production, structural steels are replacing materials with high physical and mechanical characteristics (hardness, strength, etc.), the cutting process becomes much more complicated and imposes increased requirements on the cutting tool itself. To expand the range of materials to be processed, for which production use of band-cutting machines is possible, it became necessary to create a band saw with higher cutting characteristics. At the same time, the specificity of the operating conditions of the band saw shows that the blade should have such characteristics as increased vibration resistance, resistance to alternating and dynamic loads, and the cutting part of the saw should have increased resistance to shock, dynamic, alternating loads, have high hardness, as well as increased wear resistance. Therefore, one of the ways to solve this problem proposed in the article is to avoid the manufacture of band saws using the “bimetal” technology and use the same material as a tooth and a blade when applying a wear-resistant hard-alloy nanostructured coating on the surface of the cutting edge of the tooth. The practical usefulness of the developed protective nanostructured coatings for increasing the service life of carbide turning inserts is also shown.

The work was supported by the Council on grants of the President of the Russian Federation (Agreement СП-399.2019.1).

keywords High-temperature protection coating, wear resistance, heat resistance, high-speed tool steel, magnetron sputtering

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