激光辅助加工与热处理在汽车关键零件加工中的应用综述

从激光加工的原理出发,综述了激光辅助加工、激光珩磨和激光热处理等三种激光加工技术的特点以及在汽车关键零件加工中的应用现状,指出了其中存在的技术问题,并对未来的发展趋势进行了展望。

Interpretation of GB/T 24549-2009 Fuel Cell Electric Vehicle—Safety Requirements

The national standard GB/T 24549—2009 Fuel Cell Electric Vehicle—Safety Requirements specifies the general safety requirements for whole vehicle and key parts of Fuel Cell Electric Vehicle (FCEV).It is of great significance for the development of FCEV in china.This paper discusses the main contents and the background of its development.