The Effect of Surface Machining on he Efficiency of Laser Surface Treatment

Mészáros, Béla and Fábián, Enikő Réka (2024) The Effect of Surface Machining on he Efficiency of Laser Surface Treatment. ACTA MATERIALIA TRANSYLVANICA (EN), 7 (2). pp. 88-93. ISSN 2601-8799

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Abstract

Laser surface treatment is increasingly used for surface hardening. In this series of experiments we studiedthe milling groove design effect on laser hardened surfaces at 42CrMo4 steel after corresponding laser parameters. Milled grooves of 0.25 mm, 0.50 mm and 0.75 mm depth were studied. The used diode laser and itsset parameters had the same focus distance in all cases; however, the power and travel speed of the laser lightwere changed according to the previously developed experimental plan. Higher laser heat input resulted in adeeper hardened zone. The 45° V-profile milling, and hence the 45° angles of incidence of the laser beam increased the thickness of the hardened layer. The deepest hardened layers were formed at the highest specificheat input and at the deepest grooves.

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