|
|
|
| Vacuum Electron Beam Welding Technology Research on 30CrMnSiNi2A Ultra-High Strength Steel |
| ZHUANG Mingxiang1, LI Xiaoman1, XU Mei1, ZHANG Bingxian1, YANG Haiou2 |
(1. AVIC Xi’an Aircraft Industry (Group) Company Ltd., Xi’an 710089, China;
2. State key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China) |
|
|
|
Abstract This study analyzed and discussed the vacuum electron beam welding (EBW) process of 30CrMnSiNi2A
ultra-high strength steel in bottom-lock welding form. The microstructure and mechanical properties of the welded joint
are studied by metallographic analysis, microhardness and scanning electron microscope (SEM), and analyzes the common
defects and preventing methods in welding. The results show that under the appropriate EBW parameters, 30CrMnSiNi2A
steel can achieve good weld appearance with better comprehensive mechanical properties, by X-ray and magnetic powder
flaw detection, the weld bead meet the requirements of class I weld, and this EBW welding procedure is successfully applied
to the airframe products.
|
|
|
|
|
|
|
|
|
2017, 
