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一、前言汽车轻量化和降低油耗,日益成为现代汽车工业发展的主要动向。因此提高汽车深冲钢的强度级别,以屈服强度代替拉伸强度作为设计指标的要求更为迫切。上海SH760A型轿车所遇到的问题,正是这种倾向的典型例子。采用极深冲冷轧薄板制造汽车结构件时,由于强度级别低,因而造成车身质量大,油耗高,而且经常因强度不足而
First, the foreword Lightweight and reduce fuel consumption, has become the main trend of the development of the modern automotive industry. Therefore, it is more urgent to improve the strength level of automotive deep-drawn steel and to use yield strength instead of tensile strength as the design index. Shanghai SH760A sedan encountered problems, it is a typical example of this tendency. The use of very deep cold-rolled sheet metal manufacturing automotive parts, due to the low level of strength, resulting in body mass, high fuel consumption, and often due to lack of strength