为了承受高热和机械应力,转子发动机的铝合金外余摆线燃烧室,必须电镀一层3微米厚的含有碳化硅粒子的镍合金。碳化硅的硬度已足以作为砂轮材料。曾一度用氧化铝砂轮精磨表面,但砂轮修整频繁,使磨床不得不装一个精确的砂轮磨损补偿装置。此外,磨削每一个燃烧室,包括修整时间在 In order to withstand high heat and mechanical stress, the rotor of an aluminum alloy trochoidal combustion chamber must be electroplated with a 3-μm-thick nickel alloy containing silicon carbide particles. The hardness of silicon carbide is sufficient as a grinding wheel material. Once with alumina grinding wheel surface finish, but grinding wheel dressing frequently, the grinder had to install an accurate wheel wear compensation device. In addition, grinding each combustion chamber, including the dressing time