Manufacturing method of hot and cold forging mold steel

摘要

The present invention relates to a method for manufacturing a mold steel for hot and cold forging excellent in practicality. Based on the total alloy steel, C 0.2 to 0.5%, Mn 0.3 to 1.5%, Ci 0.3 to 1.0%, Cr 3.0 to 8.0%, Mo 1.0 to 2.0%, V 0.7 to 1.5%, N 0.007 to 0.12%, Ce 0.005 to It relates to an alloy steel for a mold containing 0.01%, Ca 0.005 to 0.01%, and the remaining Fe and other unavoidable trace elements. Since the processing step can be eliminated, the economy is greatly improved by simplifying the process and preventing material waste. In addition, since the physical properties including temperability and consumption characteristics of the mold steel are greatly improved compared to the conventional alloy steel, the practicality is very high.