Elasticity Modulus and Hardness of Bearing Steel after Laser Treatment

Abstract:

The article considers the effect of laser treatment of bearing steel on the change in the elasticity modulus and hardness of the steel SHH15SG. Multi-factor models were obtained that relate the output parameters to the power W of laser radiation, the longitudinal feed Spr of the laser beam and the distance L from the protective glass of the focusing head to the workpiece surface. According to the degree of reduction of the influence on the elastic modulus of steel SHH15SG subjected to laser treatment, these factors are arranged in a sequence: W, Spr, and L. With increasing W and L the modulus of elasticity and hardness of the treated surface layer increase. 3M-XYZ surface-graphs, 3M-XYZ contour-graphs of interactive influence of independent factors on the elastic modulus and hardness of the surface layer are constructed, which simplifies the procedure for assigning the processing mode. The research results are useful for manufacturing and design companies that implement laser technologies and create laser equipment.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 247-253
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.247
• Online since: May 2021
• Authors: V. Morozov*, V.G. Gusev, D. Gavrilov
• Keywords: Elasticity Modulus, Hardness, Laser Treatment, Multiple-Factor Model, Surface Layer

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