ESDU 89031-1989
为提高钢的疲劳强度而选择表面处理的指南

为提高钢的疲劳强度而选择表面处理的指南 是非强制性国家标准，您可以免费下载预览页

非常抱歉，我们暂时无法提供预览，您可以试试：免费下载 ESDU 89031-1989 前三页，或者稍后再访问。

您也可以尝试购买此标准，
点击右侧 “购买” 按钮开始采购（由第三方提供）。

注意：点击下载后，生成下载文件时间比较长，请耐心等待......

适用范围: ESDU 89031 provides comprehensive guidance for the selection of surface treatments that improve the fatigue strength of steels primarily by inducing surface compressive stresses that inhibit the initiation and growth of cracks. Three main groups of treatments are covered@ each itself subdivided. They are mechanical methods of cold working (shot peening@ thread and fillet rolling@ and pressing for holes)@ thermal treatments (induction@ flame@ laser or electron beam hardening) that induce the stresses by surface contraction on quenching from the austenitic to the martensitic state@ and thermochemical treatments (carburising@ carbonitriding@ nitriding and ferritic nitrocarburising) that enhance the surface properties and also induce the compressive stresses through the expansion due to chemical change at the surface. Tables summarise the major advantages and limitations of each of the methods@ and indicate the potential fatigue strength improvement to be expected. A separate table shows@ according to component@ the current treatments usually applied to a wide range of commonly-met parts@ such as pistons@ shafts@ springs and so on. A systematic procedure for selecting a treatment appropriate to the component is illustrated by a flowchart@ although it is recognised that the final decision will be influenced by cost@ convenience and availability@ as well as the technical issues.

ESDU 89031-1989为提高钢的疲劳强度而选择表面处理的指南