摘要
研究了镁合金轮椅小轮轴套焊接部位的结构,改变了焊道的部位和方向,大大降低了焊接部位应力集中,有效地提高了焊接部位的疲劳强度。结果表明:焊道长度与疲劳性能有一定的关系,当焊道长度大于25 mm时,其疲劳寿命可达21万次以上,根据GB/T13800-2009标准测试满足轮椅的使用要求。
The structure of small wheel sleeve welding on magnesium alloy wheelchair were investigated by altering small wheel sleeve welding position, and altering the location and direction of weld bead, which can contribute to the stress release, then the fatigue strength on the welding position was improved. The results show that there is a certain relationship between weld bead and fatigue strength, when the length of weld bead is more than 25 mm, the fatigue life can reach more than 210,000 times, which can meet wheelchair using requirements according to GB/T13800-2009.
出处
《热加工工艺》
CSCD
北大核心
2012年第13期145-147,共3页
Hot Working Technology
基金
温州市重点科技计划项目(G20080045)
关键词
镁合金
焊接
轮椅
疲劳性能
magnesium alloy
welding
wheelchair
fatigue
