【摘要】 根据4点弯曲疲劳试验结果,对各种工艺数据进行回归处理,在N=106时,疲劳强度降低20%,比较二次熔修与一次熔修,二次熔修焊缝疲劳性能的降低是由于熔修工艺、焊接接头疲劳损伤所造成的.更多还原

【Abstract】 The fatigue test result of the TIG-dressing according to each one,the logarithms normal distribution is adopted the proceeding data processing.In this paper,the fatigue life of the weld line after secondary TIG-dressing is 20% lower than the fatigue life of the weld line after first TIG-dressing(when N=10⁶).The fatigue life of weld line after secondary TIG-dressing is lower because the TIG-dressing technology affects the base metal property and brings about the fatigue damage of the member.更多还原