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汽车产量的逐年提高给环境带来了巨大压力,国际标准ISO14000提出了产品全寿命周期对环境造成的压力评估机制(LCA),汽车作为一个能耗产品不仅在使用周期对环境的影响引起关注,在制造过程中的能耗及排放对环境的影响也将会作为考核指标,正引起汽车企业的极大关注。非调质钢由于其独特的工艺性能,产品锻造后不需后续的调质热处理工序就能达到调质钢的性能,从而可降低能耗。目前在日、美汽车底盘及发动机锻件上广泛使用。本文分析了非调质钢特性及在汽车锻造零部件应用中所展现的力学性能及疲劳性能与金相组织、锻造工艺的相关关系,并列举了非调质钢发展趋势和微合金化理论
The year-by-year increase of automobile production exerts great pressure on the environment. The international standard ISO14000 puts forward a stress assessment mechanism (LCA) on the environment caused by the product life cycle. As an energy-consuming product, automobiles not only cause concern for the environmental impact during the usage period, The energy consumption in the manufacturing process and the impact of emissions on the environment will also be used as assessment indicators, which are arousing great concern for automobile enterprises. Non-quenched and tempered steel because of its unique process performance, the product forging without quenching and tempering heat treatment process can achieve the performance of quenched and tempered steel, which can reduce energy consumption. Currently in Japan, the United States car chassis and engine forgings are widely used. In this paper, the characteristics of non-quenched and tempered steel and its mechanical properties and fatigue properties as well as the microstructure and forging process demonstrated in the application of automobile forging parts are analyzed. The development trend of non-quenched and tempered steel and the theory of microalloying