Abstract
The straightening of the distortion in steel castings is done by hot-working at the locally heated part. The purpose of this study is to clarify the changes in the structure and mechanical properties of normal carbon steel casting (SC 46) during hot-working under extreme experimental conditions.
The results are as follows ;
(1) At the working-part, the yield-strength increased from 24-25 kg/mm2 to 25-36 kg/mm2 and the elongation decreased from 18-19% to about 13%.
(2) The impact-value and hardness increased.
(3) The micro-structure changed to normalized-structure.
