中国焊接(英文版)
中國銲接(英文版)
중국한접(영문판)
CHINA WELDING
2004年
1期
27-30
,共4页
徐文立%范成磊%方洪渊%田锡唐
徐文立%範成磊%方洪淵%田錫唐
서문립%범성뢰%방홍연%전석당
welding with trailing peening%impactive rolling%welding distortion%joint strengthening
From the viewpoint of welding mechanics, two new welding methods-welding with trailing peening and welding with trailing impactive rolling were introduced. For aluminum alloy thin-shell structures with high strength, welding will lead to hot cracking, poor joint and distortion. In order to solve them, trailing impactive device was used behind welding torch to impact the different positions of welded joints, thus realizing the welding with free-hot cracking, low distortion and joint strengthening. By use of impactive rolling wheels instead of peening heads, the outlook of welded specimen can be improved and stress concentration at weld toes can be reduced. Equipment of this technology is simple and portable. It can used to weld sheets, longitudinal and ring-like beams of tube-like structures, as well as the thin-shell structures with closed welds such as flanges and hatches. So the technology has the wide application foreground in the fields of aviation and aerospace.
