Carbon steel material and processing method for strengthening the same
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsAkira Fujiwara, Atsushi Shirakawa, Kazushige Yakubo
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Abstract
In a processing method for strengthening carbon steel materials, a carbon steel having an average hardness in the range of HRC 50 to 57 and a bainite structure is subjected to a tension working so as to provide a residual strain of at least 0.3% to the carbon steel. The tensile load in the tension working exceeds the yield point, and is 95% or less of the fracture load.
Claims10
A processing method for strengthening carbon steel materials, the method comprises performing a tension working to a carbon steel material having an average hardness in the range of HRC 50 to 57 and a bainite structure so as to provide a residual strain of at least 0.3%.
A carbon steel material produced by performing a tension working to a carbon steel having an average hardness in the range of HRC 50 to 57 and a bainite structure so as to provide a residual strain of at least 0.3%.
Dependencies are inferred from the claim text.