摘要
焊接作为一种重要的制造技术,对于大型空间结构与机构的在轨组装、维修具有重要意义。在总结国外空间焊接技术发展现状的基础上,提出了基于光源同轴加热辅助的空间搅拌摩擦焊技术,并利用激光进行了地面焊接装置研究与工艺试验。结果表明,采用无倾角光源同轴加热辅助搅拌摩擦焊技术,可实现铝合金的可靠焊接;辅助加热可提高焊接速度,降低缺陷发生率。该方法为我国空间焊接技术发展提供了一种新的思路和有益探索。
Welding as an important manufacturing technology,is of great significance for on-orbit assembly of large space structures and institutions. On the basis of summarizing the development status quo of foreign welding technology used in space,a space friction stir welding technology based on the coaxial heating auxiliary of the light source was proposed and the research of the ground welding equipment and process test were carried out with laser. The results showed that the friction stir welding with zero tilt angle assisted by coaxial heating of light source could achieve reliable welding of aluminum alloy. Auxiliary heating could improve the welding speed,and reduce the incidence of defects. This method provides a new insight and useful exploration for the development of space welding technology in China.
出处
《载人航天》
CSCD
2016年第3期308-312,共5页
Manned Spaceflight
基金
国家自然科学基金(51305272)
载人航天预先研究项目(050201)
关键词
空间焊接
搅拌摩擦焊
激光
辅助加热
welding in space
friction stir welding(FSW)
laser
auxiliary heating
