Conclusions
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1.
The parameters of the thermal cycle do not reach the critical values during local heating for correction of welded parts, and therefore it is impossible to expect the full effect of quenching.
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2.
The higher the heating rate, the larger the cooling rate and the larger the quenching effect.
The largest quenching effect is observed with heating by electric arc. Lowering the heating rate (passing from electric arc to oxyacetylene, propane—butane, and natural gas) lowers the cooling rate, and the effect in changing the properties decreases.
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Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 12–15, May, 1973.
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Volynkin, G.M. Change in properties with thermal correction by local heating. Met Sci Heat Treat 15, 373–375 (1973). https://doi.org/10.1007/BF01166646
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DOI: https://doi.org/10.1007/BF01166646