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对分别用电弧炉、真空脱气和电渣工艺冶炼的轴承钢生产的204轴承进行寿命试验，得出轴承额定动负荷系数bm，电炉钢为1，真空脱气钢为1．3，电渣钢为1．7。
The life test of 204 bearing produced by bearing steel with electric arc furnace, vacuum degassing and electroslag process respectively shows that the rated dynamic load coefficient bm of the bearing is 1, the electric furnace steel is 1, the vacuum degassing steel is 1.3, the electroslag Steel is 1.7.