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重型柴油车是矿山的主要生产运输工具。由于运行条件苛刻,发动机对润滑油承载负荷要求严格,在使用国产油后大都连续出现烧瓦抱轴故障。例如金堆城钼业公司由意大利引进的20吨自卸车T—20,在81～84年间年均发生烧瓦抱轴事故52起,每次修理费万余元,平均运行里程仅3000—4000公里,严重影响矿山生产。本项目在全面考察国内外有关技术上,首先,根据矿车多在大扭距低转速下工作,曲轴与轴瓦的滑移速度低,并经过多次修理后其轴与瓦的间隙一般比新车大,导致这时油膜产生的动压大大降低,轴与瓦间不能形成完全的流体润滑,而出现部分边界润滑。据此本项目采用形成化学反应膜来解决高温高压边界润滑问题,并加入一些特殊化合物,在不影响油的其
Heavy diesel vehicles are the main production and transport vehicles. Due to the harsh operating conditions, the engine load bearing strict requirements on oil, after the majority of domestic use of oil-burning brake shaft failure. For example, Jinduicheng Molybdenum Co., Ltd. introduced 20 tons of dump truck T-20 from Italy. During the period of 81 to 84 years, there were 52 incidents of burning shingled axles each with a repair cost of 10,000 yuan and an average operating mileage of only 3000-4000 Km, a serious impact on mine production. The project is a comprehensive study of the relevant technology at home and abroad, first of all, according to the tub at low torques at high torque, crankshaft and bearing slip speed is low, and after repeated repairs its shaft and tile clearance than the new car Large, resulting in dynamic pressure generated when the oil film greatly reduced, the shaft and tile can not form a complete fluid lubrication, and the emergence of some boundary lubrication. Accordingly, this project uses the formation of chemical reaction membrane to solve the problem of high temperature and pressure boundary lubrication, and add some special compounds, which do not affect the oil