应用自制柔性化电子束钎焊系统对毛细管板接头的钎焊工艺进行了研究,探讨了钎焊工艺参数对钎料扩散深度以及钎脚高度的影响.结果表明:随着电子束输入功率或功率密度的加大,钎料向毛细管壁的扩散深度逐渐增大,钎脚高度的增长趋势显著.在一定范围内,钎料扩散深度及钎脚高度随钎料量及装配间隙的增加而增大.工件表面状态对钎脚高度的影响规律是:铰制过的试板,最有利于钎料铺展,钎脚高度最高,酸洗的试板次之,未经任何处理的试板钎脚高度最低.电子束钎焊的优化工艺参数为:加速电压60 kV,束流6.5 mA,加热时间37 s,钎料质量25 mg,聚焦电流654 mA,装配间隙0.027mm.
参考文献
| [1] | Jan Dupák;Ivan Vlcek .Martin Zobac Electron gun for computer-controlled welding of small components[J].Vacuum,2001,62:159-164. |
| [2] | Jeon Min-Kyu;Kim Weon-Bae;Han Guk-Chan et al.A study on heat flow and temperature monitoring in the laser brazing of a pin-to-plate oint[J].Journal of Materials Processing Technology,1998,82:53-60. |
| [3] | Keitel Steffen;Sobisch Gotz;Hantke Andreas et al.Shaping of deflection figures of electron beam equipment[J].Welding and Cutting,1998,50:150-154. |
| [4] | J.-S. PARK;S.-J. NA .Heat Transfer in a Stud-to-Plate Laser Braze Considering Filler Metal Movement[J].Welding Journal,1998(4):155s-163s. |
| [5] | Goodman D L;Birx D L .High energy electron beam processing experiments with induction accelerators[J].Nuclear Instruments and Methods in Physics Research,1995,B99:775-779. |
| [6] | Yang P.;Glass SJ.;Halbleib JA.;Voth TE.;Gerstle FP. Mckenzie B.;Clifford JR.;Turman BN. .Braze microstructure evolution and mechanical properties of electron beam joined ceramics[J].Materials Chemistry and Physics,2000(2):137-146. |
| [7] | Jan Felba;Kazimierz P. Friedel;Peter Krull;Igor L. Pobol;Helmut Wohlfahrt .Electron beam activated brazing of cubic boron nitride to tungsten carbide cutting tools[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2001(2/3):171-180. |
| [8] | 刘方军,毛智勇,陈刚,左从进.不锈钢管板接头的电子束钎焊研究[C].论文集,1999:703-706. |
| [9] | 何德孚.焊接与连接工程学导论[M].上海:上海交通大学出版社,1998:262-263. |
| [10] | 李少青,张毓新,梁智,楼松年.真空电子束钎焊工艺研究[J].焊接技术,2004(01):27-29. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%