A Method for Manufacturing Continuously Cast Strands Having Improved Surface Quality from Martensite Stainless Steel

摘要

PURPOSE: A method for producing a cast piece of martensite-based stainless steel of excellent surface quality is provided to suppress a surface crack and depression generated on the cast piece surface of a martensite type stainless steel by properly controlling basicity of molding powder and casting speed. CONSTITUTION: A martensite-based stainless alloy starting to coagulate into a primary ferrite and forming an austenite shape during the coagulation process is continuously cast to manufacture a continuous cast piece. A mold powder of 1.1-1.3 basicity(CaO/SiO2) range is used, and a cast speed is maintained within 0.8-1.2(m/min) during the continuous cast.