_重载履带车辆发动机再制造技术分析与评估体系探讨 毕业论文外文翻译.doc

英文文献及翻译 Investigation of Remanufacturing Technology and evaluation system of Heavy Duty Caterpillar Engine 1 Introduction With the resource increasingly drying up and the environment contaminative pricking up, the significance of continual development was understood gradually by people. The remanufacturing engineering is came into being and became one new engineering subject as the resource requirement was increasingly went up by human being. And it is regarded importantly by all the countries and become one important technology support to carry out the strategic of continual development[1,2]. Owing to the mal-conditions of operating and the high reinforcement, heavy duty caterpillar engines have a very short service life comparing with the civil vehicle. It is the unequal-life of the engine’s parts and working surfaces that results in the failure of some parts and working surfaces and the engines goes to out-of-service. Short service life of engine and unconformity with the life cycle of vehicle had become a bottleneck to the maintenance in the armored cavalry[3]. It is urgent for the ensuring and maintaining of armored equipment to start the remanufacturing of armored vehicle engine based on high technology for prolonging its service life. Notable benefit in economy and military fairs will be gained by the same service life with the vehicle after remanufacturing of the engine. 2 feasibility analysis The manufacturing technology used in the heavy duty caterpillar engine is following the old technology of the soviet times, which have 50 years up to now. And a great many new technique and material have occurred in these 50 years.The suface engineering technology, which adopting many surface intensify technology to consolidating the surface of material and getting the high wearability, was developed from the 1980s. It provides a technology base to remanufacturing the equipment engine[4]. Now, the employ life-span of civilian engine have reached at 8000～10000h as us