METHOD FOR PRODUCING CAST STEEL PRODUCT EXCELLENT IN TORTOISE-SHELL CRACK RESISTANCE, AND CAST STEEL PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a cast steel product capable of reducing tortoise-shell crack as little as possible by adjusting the chemical components in the steel material.;SOLUTION: The production method of the cast steel product has the point, in which molten steel having ≥1.5 mass% total content of Ni, Cr, Mo and V and ≤0.020 mass% Al, or that having 1.5 mass% (containing 0) total content of Ni, Cr, Mo and V and ≤0.026 mass% Al, is used.;COPYRIGHT: (C)2002,JPO