Conclusions
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1.
The dependence of the thickness of the heated (hardened and/or melted) layer on steels and cast irons on the parameters of surface heating by a concentrated heating source is described by a single relationz∝P Fom, where the Fourier factor is defined approximately as Fo≈a/(d v) and the exponentm=0.5 or 0.4 for one-dimensional and three-dimensional problems, respectively.
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2.
The dependencez∝P Fom has been proved experimentally for laser and plasma heating of various steels and cast irons.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 31–36, July, 1999.
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Kraposhin, V.S. Engineering relations for the depth of surface heating of metal by highly concentrated energy sources. Met Sci Heat Treat 41, 301–305 (1999). https://doi.org/10.1007/BF02466286
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DOI: https://doi.org/10.1007/BF02466286