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文章概述了该活塞的设计、三维应力有限元计算以及应力、变形和温度的实测结果;还介绍了高强韧球铁材料的性能;活塞的制造工艺特点以及装机运用的效果。通过770小时和参照《ORE360小时》台架试验以及在铁路牵引中45万余公里的实际使用表明,这种活塞的主要优点是:安全可靠,有较大的承载能力;使用寿命长,解决了活塞第一环槽早期磨损问题;机油消耗率从铝活塞的2g/(kW·h),降低到lg/(kW·h);燃油消耗率比铝活塞略有降低;消除了气缸套的穴蚀。
The paper summarizes the design of the piston, finite element calculation of the three-dimensional stress and the measured results of stress, deformation and temperature. The properties of the high-toughness ductile iron material, the characteristics of the manufacturing process of the piston and the effect of the installed machine are also introduced. The 770-hour and reference “ORE360-hour” bench test and the actual use of more than 450,000 kilometers in railway traction show that the main advantages of this piston are: safe, reliable, with a large load-carrying capacity; long service life, solved Piston wear of the first ring groove; oil consumption rate from aluminum piston 2g / (kW · h), reduced to lg / (kW · h); fuel consumption rate slightly lower than the aluminum piston; eclipse.