METHOD FOR SURFACE TREATING OF STEEL EXCELLENT IN CORROSION RESISTANCE AND ABRASION RESISTANCE

摘要

PURPOSE: A method for treating surface of steel is provided to improve corrosion resistance and abrasion resistance by using an oxynitridation process. CONSTITUTION: A method for treating surface of steel comprises next steps. The ammonia and carbon dioxide are inserted in a furnace. Nitridation is performed in 500 ~ 600°C. After nitridation is completed, it is cooled in 500 ~ 550°C. The temperature of the nitridation is maintained in 500 ~ 550°C. It is oxidized under a vapor atmosphere. After it is cooled under room temperature after the oxidation process is completed.