摘要
综合分析研究了380km/h高速列车制动盘的结构、材料化学成分及力学性能,得到满足制动盘技术要求的低合金铸钢材料及循环对称散热筋结构。热应力计算结果表明紧急制动过程中最大热应力为448MPa,小于材料的屈服极限。首次针对高速列车制动盘提出并实施了1 000次11制动动力台b架疲劳试验,疲劳试验表明制动盘摩擦面没有出现热斑、热裂纹等不良状况。初速度为420km/h紧急制动工况下热成像测试显示制动盘表面温度分布比较均匀,制动盘摩擦面最高温度为608℃,满足380km/h高速列车基础制动技术条件要求。
In this paper, comprehensively analysis 380 km/h high-speed train brake disc structure, chemical composition and mechanical properties, and obtain low alloy steel to meet the technical requirements of the brake disc material and cyclic symmetry radiating rib structure. Thermal stress calculation results show that the maximum thermal stress during the emergency braking is 448 MPa, which is less than the material yield limit. Fatigue test of a 1000 times of brake disc of train on full scale bench has been Proposed and implemen ted firstly. Fatigue test results showed that the brake disc friction surface does not appear the hot spots, thermal cracks and other disadvantage conditions. In emergency braking case of 420 km/h of Initial velocity, the thermal imaging testing results show the brake disc surface temperature distribution is uniform, the maximum temperature of the brake disc friction surface is up to 608℃, which is to meet the brake system technology conditions of 380 km/h high-speed train.
出处
《铁道机车车辆》
2013年第1期1-4,共4页
Railway Locomotive & Car
基金
两部支撑课题2009BAG12A05
两部支撑课题2009BAG12A07
