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金堆城钼业集团有限公司机电修配厂采用90mm×90mm方钢锻制的φ120mm钢球,在锻后余热处理后,沿钢球中心脆性断裂,破碎率大于6%,严重影响了产品质量。为此,从材料化学成分、断裂
Jinduicheng Molybdenum Group Co., Ltd. mechanical and electrical equipment factory with 90mm × 90mm square steel forged φ120mm steel ball, after forging heat treatment, along the center of the ball brittle fracture, the crushing rate of more than 6%, seriously affected the product quality. To do this, from the material chemical composition, fracture