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对研制的高速列车锻钢制动盘的热处理工艺、金相组织、力学性能、热物理性能和冷热疲劳性能进行了研究分析。结果表明该锻钢材料基体组织致密具有较高的强度、伸长率、硬度和冲击吸收能量热疲劳抗力良好,并且还具有较高的比热容和热扩散系数。1:1制动台架试验表明制动过程中锻钢制动盘的最高温度没有超过制动盘许用温度,试验结束后制动盘摩擦面没有出现热斑、划伤、热裂纹等不良现象所,研制的锻钢制动盘可以满足高速列车制动使用要求。
The heat treatment process, microstructure, mechanical properties, thermal physical properties and thermal fatigue properties of the developed high-speed train forged steel brake disc were studied and analyzed. The results show that the matrix of the forged steel has compact structure with high strength, good thermal fatigue resistance of elongation, hardness and impact absorption energy, and also has high specific heat capacity and thermal diffusivity. Brake bench test shows that the maximum temperature of the brake disc forged during the braking process did not exceed the allowable temperature of the brake disc. After the test, the brake disc friction surface did not appear hot spots, scratches, hot cracks and other defects Phenomenon, the development of forged steel brake discs to meet the requirements of high-speed train braking.