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外文期刊>Revista de Metalurgia
>Characterization of the surface oxidation reaction and its influence on the radiation absorption during the surface laser hardening process of the 42CrMo4 steel.
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Characterization of the surface oxidation reaction and its influence on the radiation absorption during the surface laser hardening process of the 42CrMo4 steel.
Surface laser hardening of steel is a process that produces an enormous interest due to its uncountable advantages in terms of quality and productivity against induction hardening The effective implantation of this process, nevertheless, is been hampered because of the lack of reliable and flexible predictive tools. There are different models focused on the temperature calculation, thought, few make a thorough analysis of the surface oxidation associated with the process and its important implications over the absorption coefficient. This work proposes and explains a coupled model temperature/oxidation available in literature, applied, for the first time, for the simulation of simple processes carried out with different conditions of power and speed, for the 42CrMo4 steel. These conditions have been reproduced experimentally, tracking the maximum surface temperature and the oxide thickness. Both results have shown a high degree of coincidence whit theoretical predictions, confirming the capabilities and utility of the model. (C) 2016 CSIC. This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial (by-nc) Spain 3.0 License.
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