Laser-Spark Modification of the Surfaces of Structural Materials by the Example of St3

Abstract:

The paper considers a technology for hardening construction materials using the hybrid (laser-spark) method by the example of steel St3 using hard alloys (VK8, stellite PR-V3K). A significant (several-fold) increase in the wear resistance of the coatings obtained is shown at resistance to abrasive friction due to the good quality of the coating layer and its microhardness (up to 60 GPa). Optimum modes for electrical spark and laser surface modification are proposed. Some physical and chemical properties of the coatings obtained (thickness, roughness, wear resistance, microhardness), as well as their dependence on the hybrid machining modes, are studied. The prospectivity of applying the hybrid (laser-spark) method for hardening of machine parts in order to increase their resistance to abrasive wear during friction is justified.

• Periodical: Solid State Phenomena (Volume 284)
• Pages: 1268-1272
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.284.1268
• Online since: October 2018
• Authors: S.G. Kuptsov, V.V. Shimov*, R.S. Magomedova
• Keywords: Coating, Electrical Spark Machining, Laser, Wear Resistance

References

[1] N.I. Lazarenko, Electrical Discharge Machining of Metals. Publishing house of the USSR Academy of Sciences Inc., Moscow, (1957).

[2] G.P. Ivanov, The Technology of Electric Spark Hardening of Tools and Machine Parts. Matgiz Publishing house Inc., Moscow, (1957).

[3] A.D. Verkhoturov, N.I. Mukha, Technology of Electric Spark Alloying of Metal Surfaces. Tekhnika Publishing house Inc., Kiev, (1982).

[4] Elitron-52A, Plant. Instructions in Electric Erosion Machining. (1988).

[5] A.G. Grigoryants, I.N. Shiganov, and A.M. Chirkov, Hybrid Laser Welding Technologies: Educational Guidance. Publishing house of the Bauman MSTU Inc., Moscow, (2004).

[6] A.P. Litvinov, Directions of the Development of Combined and Hybrid Welding and Surfacing Technologies. Automatic Welding. 1 (2009) 48-52.

[7] N.P. Aleshin, V.I. Lysak, and V.V. Lukyanov, Modern Welding Methods: Educational Guidance. Publishing house of the Bauman MSTU Inc., Moscow, (2011).

[8] S.G. Kuptsov, M.V. Fominykh, D.V. Mukhinov, R.S. Magomedova, and V.P. Pleshchev, Hybrid (Laser-Spark) Method of Applying Hardening Coating. In Collection of Reports Welding and Diagnostics,, Ekaterinburg, (2015).

[9] GOST 21449-75. Rods for Surfacing. (1975).

[10] A.S. Zubchenko, Steel and Alloy Grade Guide (2nd ed., revised and corrected). Mechanical Engineering Inc., Moscow, (2003).