毕业设计---弹簧钢板的断裂修复

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1、Xxxxx 学院 毕业设计（论文） 作 者： xx 学 号： xxx 系 部： xxxxx 专 业： xxxx 题 目： 弹簧钢板的断裂修复 指导老师 xxx 评阅老师 2011 年 5 月 2 摘要 介绍国内外弹簧钢的主要钢种及生产现状， 提出了当前弹簧钢 生产和应用 应向高强度、高群减抛、方向发展。并着重介绍了常见弹簧钢板的焊接方法与 工艺。 弹簧钢广泛用于飞机、铁道车辆、汽车、拖拉机等运输工具和工程机械等 各种设备中。弹簧钢应具有优良的综合性能，希望得到更高的力学性能(特别是 弹性极限、强度极限、 屈强比) 、抗弹减性能(即抗弹性减退性能，又称抗松 弛性能)、疲劳性能、淬透性、物理化学性

2、能(耐热、耐低温、抗氧化、耐腐蚀 等)。同时从节能和经济性出发，要求减轻弹簧重量，以减轻汽车、摩托车等运 输工具的重量， 也成为一个重要方面，由此提出了高强度弹簧钢开发的要求。 国内外近年来开展了大量的研究工作，以期进一步提高弹簧钢的强度水平和使 用寿命。 关键词关键词：弹簧钢；现状：焊接性；焊接方法和工艺 3 The summary Introduces the main steel grade.these steel LTD and the production situation, this paper proposes the current spring steel producti

3、on and application of high strength, GaoQun shall be reduced to cast, direction. And emphatically introduces the common spring steel welding methods and processes Spring steel are widely used in airplanes, railway vehicle and automobiles, tractors, etc transport and engineering machinery, etc. Vario

4、us kinds of equipment. Spring steel should have excellent comprehensive performance, hope to get higher mechanical properties (especially the elastic limit, intensity limit, the resistance than), generalize reduced performance (i.e. elastic resistance performance, also called waned flabby performanc

5、e) and fatigue resistance performance, its quench-hardening ability and physical and chemical properties (heat-resisting, good low temperature resistance, resistance to oxidation and corrosion resistance, etc.). Meanwhile, starting from energy-saving and economy to ease spring weight, in order to re

6、duce automobile, motorcycle, etc of transport weight, also become an important aspect, then puts forward the development of the high strength spring steel requirements. At home and abroad in recent years of research work carried out, so as to further improve the intensity level and use LTD service life. Keywords: spring steel; Situation: the weldability; We