A METHOD FOR PREVENTING CARBON STEEL PIPE FROM INTERGRANULAR CRACKING

摘要

PURPOSE: A method of preventing an intergranular cracking of carbon steel is provided to control a formation of a decarbonized layer and oxidation of an atomic electrical power plant feeder pipe. CONSTITUTION: A method of preventing an intergranular cracking of carbon steel comprises the following steps: inserting reductive gas before heat-treating the carbon steel; heat-treating the carbon steel with the presence of the reductive gas; and preventing a formation of a decarbonized layer. The reductive gas includes hydrogen gas.