摘要
采用搅拌摩擦焊(FSW)对底板厚度为20mm的6063-T5铝合金散热片进行了拼接实验。由于焊件所特有的高效散热结构,使焊接区温度梯度大,热量损失严重,导致焊缝横截面出现S形曲线。通过分析焊缝横截面S形曲线的形成机制,采取两条应对控制策略,优化工艺参数,最终得到成型美观、内部无缺陷的FSW焊缝。此研究成果对采用FSW进行同类型铝合金的焊接有重要的指导意义。
The technology of the friction stir welding tailor-welded was used to join together the 6063-T5 aluminum alloy radiator whose baseplate thickness is 20mm.Due to the special efficient cooling structure of the weldment,the larre welding zone temperature gradient and serious heat loss leaded to S curve that appeared in the weld cross section.With the analysis of the curve formation mechanism,two control strategies are adopted,and then the weld joint were both with good appearance and defect-free in the inner with the optimization of process parameters.The research results have important guiding significance to the FSW of the same type aluminum alloy.
出处
《热加工工艺》
CSCD
北大核心
2012年第3期144-147,共4页
Hot Working Technology
基金
国家重点基础研究发展计划(973计划)(2010CB731704)
