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Scientific-technical journal

Abstract

The article discusses the use of thermal and thermo cyclic processing in order to increase the abrasive wear resistance by the example of samples from the St5Ghs steel, 35, 45, 65G and U8 compared to the reference sample. Preliminary processing was carried out, which consisted in normalization from heating temperatures from Ac3 (or Ac1) + 30 ÷ 50 °C to 1200 °C and pulsed cyclic hardening. The final heat treatment provides an increase of 20 ÷ 50% of the wear resistance of steels during sliding friction against loose abrasive particles. During pulsed cyclic hardening, the highest dislocation density of 65G steel is formed with a preliminary pulsed cyclic heating of 450 °C - 3 cycles, which increases the wear resistance by up to 30% compared to conventional induction hardening.

First Page

35

Last Page

41

References

[1]. Biront V.S. Teoriya termicheskoy obrabotki metallov. SFU: ITSMiZ. – Krasnoyarsk, 2007. –234 s. [2]. Mukhamedov A.A. Heat treatment with double phase recrystallization forimpovingservice propezties of machine parts and tools // Heat treatment and technology of surface coating. VII Mejdunarodnыy kongress Termicheskaya obrabotka. 11-14 Dekabrya 1990 g. Moskva. S. 38–39. [3]. Garkunov D.N. Tribotexnika / D.N. Garkunov, E.L. Melnikov, V.S. Gavrilyuk. – M.: KNORUS, 2013. – 408 s. [4]. Berdiev D.M. Povishenie abrazivnoy iznosostoykosti staley termicheskoy obrabotkoy s predvaritelnoy podgotovkoy strukturi // Vestnik mashinostroeniya. Moskva. 2018. №9. S. 57 - 59. [5]. Evdokimov A.I. TSiklicheskaya zakalka stali XVG / A.I. Yevdokimov, M.G. Zelin, V.A. Korotkov // MiTOM, 2002. №9. – S. 33–34. [6]. Effect of cyclic heat treatment on microstructures and mechanical properties of directionally solidified Ti-46Al-6NB alloy / Hong-ze FANG [and ot.] // Trans. Nonferrous Met. Soc. China 25 (2015) rr.1872 – 1880. [7]. Qiangfei Xia, S. N. Wang, Yong Wang, Lie Yuang. Effect of heating rate on the grain refinement of a TiAl alloy by cyclic heat treatment // Materials Science and Enginering: A Volume 300 issues 1-2. 28 February 2001.– P. 309-311. [8]. Boyazid S.M., Farhangi H., Asgharzadeh H., Radan L., Gnahramani A., Mirhaji A. Effect of cyclic solution treatment on microstructure and mechanical properties of friction stir welded 7075 Al alloy // Materials Science Engineering A. Vol. 649. – 2016. p. 293-300 [9]. Atanu Saha, Dipak Mondal, Koushik Biswas, joydeep Maity. Microstructural modifications and changes in mechanical properties during cyclic heat treatment of 0,16 % carbon steel // Materials Science and Engineering: A. Vol. 534. February 2012. – P. 465-475. [10]. Metallografiya splavov jeleza. Spravochnik. Per. s nem. pod red. M.L.Brenshteyna. - Metallurgiya, 2005. – 248 s. [11]. Tenenbaum M.M. Soprotivlenie abrazivnomu iznashivaniyu. M.:Mashinostroenie, 1976. – 267 s. [12]. A.A. Muxamedov, B.K. Tilabov. Povыshenie iznosostoykosti detaley s tverdosplavnimi pokritiyami termicheskoy obrabotkoy // Izvestiya VUZov. CHernaya metallurgiya. 2013. №12. S. 35–37. [13]. Berdiev D.M. Povishenie abrazivnoy iznosostoykosti staley // Texnika i texnologii mashinostroeniya // VI mejdunarodnaya konferentsiya, g. Omsk. 20-21 aprelya 2017. C. 3–8.

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