AN UNSUITABLE RESIDUAL-STRESS STATE IN TRAIN SPRINGS ORIGINATED BY SHOT PEENING

被引：6

作者：

ARTARAZ, F ^{[1
]}

SANCHEZBEITIA, S ^{[1
]}

机构：

[1] UNIV BASQUE COUNTRY, BILBAO, SPAIN

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1991年 / 13卷 / 02期

关键词：

RESIDUAL STRESSES; SHOT PEENING; TRAIN SPRINGS; LIFETIME;

D O I：

10.1016/0142-1123(91)90009-N

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This article deals with the residual stresses originated by 'shot peening', and their influence on train springs during a lifetime of service. The Spanish firm Construccion y Auxiliar de Ferrocarriles, S.A., rejected the springs they analysed for this purpose. The main reason was that cracks were observed in the springs by different fatigue tests after 200 hours under realistic service conditions. The residual stresses introduced by the 'shot peening' process are believed to be the cause of the above-mentioned result, as they do not correspond to those of a correctly executed treatment. Consequently, these springs are not appropriate for the primary suspensions of locomotives at 180 km h-1.

引用

页码：165 / 168

页数：4