FORMATION OF DIFFUSION LAYER ON A WORKING SURFACE OF A TOOL, WORKING IN THE CONDITIONS OF DYNAMIC WEAR
https://doi.org/10.17073/0368-0797-2015-2-117-120
Abstract
The paper is devoted to the investigations of the structure and properties of the diffusion layer of the samples after boriding and boron-chrome plating. It has been revealed that when boriding, diffusion layers are formed with a high content of high-boride phase; it reduces the plasticity of the layer. The research on boron diffusion saturation of the working surface of the punch for cutting goals has been carried out. It has been established that during the work under dynamic loads they experience friction. The receiving of fragile boride layers does not cause the increase of operational properties of such products. It has been found out that the alloying of chromium boride layers reduces the fragility of the diffusion layers. By optimizing the process of boronchrome plating for these products the following parameters have been identifi ed: the composition of the coating, the temperature of diffusion saturation, exposure time. It has been proposed to combine chemicothermal treatment of punches in coating and heating of products for hardening. The possibility of replacing the alloyed steel by carbon steel with the investigated diffusion coating has been shown.
About the Authors
B. D. Lygdenov
Wuhan Textile University, East Siberia State University of Technology and Management
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair “Metal Science and Materials Processing Technologies”
A. M. Gur’ev
Wuhan Textile University, Altai State Technical University named after I.I. Polzunov
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair “Descriptive Geometry and Engineering Graphics”
E. V. Kozlov
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair of Physics
V. A. Butukhanov
East Siberia State University of Technology and Management
Russian Federation
Russian Federation
Engineer, Postgraduate
Chzhu Chinkhua
Wuhan Textile University
China
Professor
China
Professor
References
1. Krukovich M.G., Prusakov B.A., Sizov I.G. Plastichnost’ borirovannykh sloev [Plasticity of borated layers]. Moscow: Fizmatlit, 2010. 384 p. (In Russ.).
2. Minkevich A.N. Khimiko-termicheskaya obrabotka metallov i splavov [Chemicothermal treatment of metals and alloys]. Moscow: Mashinostroenie, 1965. 491 p. (In Russ.).
3. Samsonov G.V., Epik A.P. Tugoplavkie pokrytiya [High-melting coatings]. Moscow: Metallurgiya, 1976. 559 p. (In Russ.).
4. Grinberg E.M. Metallovedenie borsoderzhashchikh konstruktsionnykh stalei [Physical metallurgy of boron-containing structural steels]. Moscow: izd. MISIS, 1997.198 p. (In Russ.).
5. Glazov V.M., Vigdorovich V.N. Mikrotverdost’ metallov i poluprovodnikov [Microhardness of metals and semiconductors]. Moscow: Metallurgiya, 1969. 248 p. (In Russ.).
6. Lygdenov B.D. Fazovye prevrashcheniya v stalyakh s gradientnymi strukturami, poluchennymi khimiko-termicheskoi i khimiko-termotsiklicheskoi obrabotkoi. Avtoref. dis. kand. tekhn. nauk. [Phase transformation in steels with the gradient structures, got by chemi-
7. cothermal and chemical thermocyclic treatment. Cand. Tech. Sci. diss.]. Novokuznetsk, 2004. 33 p. (In Russ.).
8. Gur’ev A.M., Ivanov S.G. Diffusion mechanism of boron, chromium and titanium at simultaneous multicomponent surface saturation of iron-carbon alloys. Fundamental’nye problemy sovremennogo materialovedeniya. 2011, Vol. 8, no. 3, pp. 92–96. (In Russ.).
9. Sitkevich M.V., Bel’skii E.I. Sovmeshchennye protsessy khimiko-ermicheskoi obrabotki s ispol’zovaniem obmazok [Simultaneous processes of chemicothermal treatment with the use of coatings]. Minsk: Vysshaya shkola, 1987. 156 p. (In Russ.).
10. Ivanov S.G. Razrabotka sostava nasyshchayushchei smesi i tekhnologii diffuzionnogo borokhromirovaniya tyazhelonagruzhennykh detalei mashin i instrumenta. Avtoref. dis. kand. tekhn. nauk. [Development of saturating mixture content and the technology of dif-
11. fusion boron-chrome plating of heavy duty machine parts and tools. Cand. Tech. Sci. diss.]. Barnaul, 2007. 18 p. (In Russ.).
12. Borisenok S.G., Vasil’ev L.A., Voroshnin L.G. etc. Khimiko-termicheskaya obrabotka metallov i splavov. Spravochnik [Chemico-thermal treatment of metals and alloys. Reference book]. Moscow: Metallurgiya, 1984. 424 p. (In Russ.).
Review
For citations:
Lygdenov B.D., Gur’ev A.M., Kozlov E.V., Butukhanov V.A., Chinkhua Ch. FORMATION OF DIFFUSION LAYER ON A WORKING SURFACE OF A TOOL, WORKING IN THE CONDITIONS OF DYNAMIC WEAR. Izvestiya. Ferrous Metallurgy. 2015;58(2):117-120. (In Russ.) https://doi.org/10.17073/0368-0797-2015-2-117-120
Views:
739
Email this article 