ROLL MATERIAL FOR CONTINUOUS CASTING INSTALLATION

• Main Authors: TOMONO YUTAKA, TANAKA KAZUHIKO, TAKAGI TOMIO, UEDA MITSUHIKO
• Format: Patent
• Language: English
• Published: 28.08.1986
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

PURPOSE:To obtain the titled roll material which is low in the thermal expansion and improved in the resistance to deformation in bend and the thermal fatigue properties resistance by containing Si, Mn, Ni, Co, Ti and Al of the specified amount as a basic component in a steel composition. CONSTITUTION:A roll material for a continuous casting installation is obtained by making Fe an essential component, containing by wt. ratio <=0.2% C, <=2.0% Si, <=2.0% Mn, 30-40% Ni, 2-17% Co, 0.5-4.5% Ti, 0.5-5% Al and the inevitable elements and furthermore if necessary adding 0.5-4.0% Nb. Cr is not contained and Ni, Co, Ti and Al of the proper amount are contained in this steel. Therefore, since this steel is somewhat inferior in the high-temp. oxidizability resistance in comparison with the conventional Cr-contg. steel, but is superior in the resistance to thermal fatigue and the resistance to deformation in bending, the service life of roll can be prolonged.