THE INFLUENCE OF LASER MODIFICATION MODES ON THE STRUCTURE, PROPERTIES AND WEAR RESISTANCE OF SMALL-SIZED TOOL MADE OF HIGH-SPEED R6M5 STEEL


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Abstract

The paper considers the issue of wear resistance improvement of small-sized cutting tools. One of the advanced ways to solve this problem is the heat treatment using the highly concentrated energy flows created by laser beam. Modern fiber optic lasers combine high power density of laser radiation with the possibility of laser beam delivery to the most hard-to-reach treated areas by using optic fiber. The study and forecasting of the properties and the structure of a modified zone are the most important elements of technological process preparing and allow selecting optimal modes of laser treatment. 

The paper gives the results of experimental study of the influence of laser modification parameters on the state and properties of the surface layer of the high-speed R6M5 steel samples. The authors obtained the dependences of heat-affected zone depth and width on the laser radiation power, measured the microhardness of various areas of treated surface and studied in details the structure obtained for various laser modification modes. The study revealed the increase in microhardness resulting from the fiber optic laser modification during the quasi-continuous operation and set the boundary between the modes of laser modification with flashing and without it for R6M5 tool steel. As the practical application of the results obtained, the authors carried out the evaluation of small-sized tools wear resistance according to the suggested modes and determined the laser modification modes allowing the increase of durability of small diameter twist drills in 5 and more times. Test results demonstrate the unavailability of some relevant modes for the tool working surfaces modification due to the extremely gross wear of the processed surface and the cutting edge damage within the cutting process.

About the authors

Pavel Aleksandrovich Ogin

Togliatti State University, Togliatti

Author for correspondence.
Email: fantom241288@yandex.ru

postgraduate student

Россия

Dmitriy Lvovich Merson

Togliatti State University, Togliatti

Email: D.Merson@tltsu.ru

Doctor of Sciences (Physics and Mathematics), Professor

Россия

Lyudmila Aleksandrovna Kondrashina

Togliatti State University, Togliatti

Email: L.Kondrashina@tltsu.ru

Head of Laboratory

Россия

Kirill Yakovlevich Vaskin

Togliatti State University, Togliatti

Email: Vaskink@mail.ru

PhD (Engineering), Associate Professor, assistant professor of Chair “Equipment and machinery production technologies”

Россия

References

  1. Ogin P.A. The structure and characteristics of the overlap areas during the laser hardening of steels and irons. Vektor nauki Tol’yattinskogo gosudarstvennogo universiteta, 2015, no. 2-2, pp. 130–135.
  2. Malyshev V.I., Boychenko O.V., Ogin P.A. Steel and iron surface modification using the feber optic laser. Sbornik nauchnykh trudov Sworld, 2014, vol. 7, no. 4, pp. 56–61.
  3. Grigoryants A.G., Shchiganov I.N., Misyurov A.I. Tekhnicheskie protsessy lazernoy obrabotki [Technical processes of laser treatment]. Moscow, MGTU im. N.E. Baumana Publ., 2006. 664 p.
  4. Sitkina L.P., Yaresko S.I. Efficiency of laser hardening processing technology in tool production. Izvestiya Volgogradskogo gosudarstvennogo tekhnicheskogo universiteta, 2013, vol. 9, no. 7, pp. 40–43.
  5. Lee J.-H., Jang J.-H., Joo B.-D., Son Y.-M., Moon Y.-H. Laser surface hardening of AISI H13 tool steel. Transactions of Nonferrous Metals Society of China (English Edition), 2009, vol. 19, no. 4, pp. 917–920.
  6. Kim J.-D., Lee M.-H., Lee S.-J., Kang W.-J. Laser transformation hardening on rod-shaped carbon steel by Gaussian beam. Transactions of Nonferrous Metals Society of China (English Edition), 2009, vol. 19, no. 4, pp. 941–945.
  7. Gorinin V., Kondratiev S., Popov V. Laser Modification of Thribological Behaiver of Steel and Nonferrous Alloys. Fotonika, 2010, no. 3, pp. 26–33.
  8. Magin D.Yu., Kostromin S.V. Investigation of structure and properties of high heat resistant steel after heat treatment and laser surface hardening. Trudy NGTU im. R.E. Alekseeva, 2013, no. 4, pp. 256–261.
  9. Chirkov A. Laser-plasma steel surface layer nanostructuring under atmosphere conditions. Fotonika, 2008, no. 4, pp. 28–31.
  10. Birukov V. Surface Recovery and Strengthening with Laser Emission. Fotonika, 2009, no. 3, pp. 14–17.
  11. Birukov V. Steels Structure and Properties Variations in the Process of Laser Hardening. Fotonika, 2012, no. 3, pp. 22–27.
  12. Adel K.M., Dhia A.S., Ghazali M.J. The effect of laser surface hardening on the wear and friction characteristics of acicular bainitic ductile iron. International Journal of Mechanical and Materials Engineering, 2009, vol. 4, no. 2, pp. 167–171.
  13. Skpipchenko A.I. Testing of the process of steel hardening by fiber lasering. RITM, 2007, no. 5, pp. 52–53.
  14. Popov V. Laser Hardening Steels. Comparison of Fiber and CO2 Lasers. Fotonika, 2009, no. 4, pp. 18–21.
  15. Somonov V.V., Cybulsky I.A. The efficiency of the use of fiber lasers for laser hardening products in the industry. Metalloobrabotka, 2014, no. 1, pp. 9–12.
  16. Mayorov V.S. Laser hardening of metals. Lazernye tekhnologii obrabotki materialov: sovremennye problemy fundamentalnykh issledovaniy i prikladnykh razrabotok. Moscow, Fizmatlit Publ., 2009, pp. 439–469.
  17. Grigoryants A.G. Osnovy lazernoy obrabotki materialov [Basic principles fo laser processing of materials]. Moscow, Mashinostroenie Publ., 1989. 304 p.
  18. Ogin P.A., Levashkin D.G. “Carrier-fiber optic laser” conception as a single complex for technological processes automation. Trudy mezhdunar. nauch.-tekhn. konferentsii “IV Reznikovskie chteniya”. Togliatti, TGU Publ., 2015, part 1, pp. 362–365.
  19. Pinakhin I.A., Toeskin S.A. Selecting surround pulsed laser hardening (VPLH) for wear of cutting tools. Vestnik Severo-Kavkazskogo federalnogo universiteta, 2013, no. 2, pp. 78–81.
  20. Yaresko S.I., Goryainov D.S. The laser hardening of the cutting tool modeling. Izvestiya Samarskogo nauchnogo tsentra RAN, 2011, vol. 13, no. 4-3, pp. 921–926.
  21. Yaresko S.I. Wear and wear resistance analysis of hard alloy tools after laser treatment. Izvestiya Samarskogo nauchnogo tsentra RAN, 2001, vol. 3, no. 1, pp. 27–37.
  22. Sinyakov K.A. Influence of heating rate on the structure and characteristics of tool steels. Instrument i tekhnologii, 2008, no. 5, pp. 151–158.
  23. Ogin P.A., Vaskin K.Ya. Improvement of small-size tool resource by means of wearing surfaces modification using the fiber optic laser. Trudy mezhdunar. nauch.-tekhn. konferentsii “IV Reznikovskie chteniya”. Togliatti, TGU Publ., 2015, part 1, pp. 143–145.

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