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高应力气门弹簧钢丝是近年来轿车发动机中得到广泛应用的新型气门弹簧材料 ,与传统的气门弹簧钢丝相比 ,具有尺寸更小、弹减抗力好、承载能力强、使用寿命长、质量稳定性好等优点 ,并在材料成分和规格等方面形成了系列化的发展趋势。结合国家“86 3”新材料领域的“轿车高应力气门弹簧钢丝的研究开发”项目的研究进展 ,概述了 6 7CrVA超纯洁度气门弹簧钢的冶炼及其轧制工艺、弹簧钢热轧线材的扒皮工艺、半成品气门弹簧钢丝的铅淬火和成品气门弹簧钢丝的油淬火—回火工艺等关键技术的研究进展
High-stress valve spring steel wire is widely used in passenger car engine in recent years, a new type of valve spring material, compared with the traditional valve spring steel wire, with smaller size, good resistance to load reduction, load capacity, long life, quality and stability Good and so on, and in the material composition and specifications formed a series of development trends. Based on the research progress of “Research and Development of Car High Stress Valve Spring Steel Wire” in the field of new material of “863” in the country, this paper summarizes the smelting and rolling process of valve spring steel with 67CrVA ultrapure, hot rolled wire rod of spring steel Research progress of key technologies such as flaking and semi-finished valve spring steel and quenching and tempering of finished valve spring wire