The method of inhibiting casting super austenitic stainless steel the elements chromium and molybdenum in the center segregation

ROLL CASTING method of super austenitic stainless steel the elements chromium and molybdenum to suppress center segregation, preparation technical field belonging to the super austenitic stainless steel. Preparation process: (1) super austenitic stainless steel according to the composition ratio, weighed raw materials, the respective insulation material 100 ~ 150min at 150 ~ 250 ℃; (2) the classification of raw materials each, placed in a vacuum induction melting step furnace, steel smelting obtained; (3) high purity nitrogen atmosphere, into a steel ladle twin roll strip casting machine for casting, wherein the pouring temperature is 1450 ~ 1550 ℃, casting speed of 10 ~ 40m / min, casting rolling force 30 ~ 70kN, a thickness of 2.0 ~ 3.0mm super austenitic stainless steel strip. Super austenitic stainless steel strip is prepared, Cr and Mo in the center segregation is suppressed, in the same premise of ensuring the plastic yield strength than the conventional process with the specifications of the strip increased by 5% to 10%, while casting method of the present invention, energy consumption and reduce production costs, improve material utilization, reduce environmental pollution.