以低碳钢为研究对象,采用高功率CO2激光焊接设备,通过抛切焊缝断面统计气孔数量,并观测焊缝中气孔位置和形貌,研究了非熔透性深熔焊接过程中保护气体流量、激光束倾角、激光功率及焊接速率等工艺参数对低碳钢激光焊接气孔形成规律的影响.结果表明,在低碳钢CO2激光非熔透性深熔焊接过程中,气孔的形成主要源于焊接过程中匙孔的不稳定塌陷所形成的工艺型气孔,在熔池中气泡逸出熔池的速率低于熔池金属凝固速率的情况下会产生气孔.随着气体流量的增加,气孔数量呈现先增加后减少的过程,流量为35 L/min时气孔数量最少；随着激光束倾角的增加,气孔数量呈现先增加后减少的趋势,在满足较大熔深条件下,倾角22.5°时可以获得较少的气孔数量.激光功率为4 kW时气孔数量最少,在0.75 m/min的低焊速下气孔得到较好抑制.
参考文献
| [1] | Mikhail S,Antti S,Vladislav S,Alexander F.Opt Laser Technol,2012; 44:2064 |
| [2] | Peisgen U,Schleser M,Mokrov O,Ahmed E.Opt Laser Technol,2012; 44:255 |
| [3] | Ruggiero A,Tricarico L,Olabi A G,Benyounis K Y.Opt Laser Technol,2011; 43:82 |
| [4] | Yilbas B,Arif A,Abdul A.Opt Laser Technol,2010; 42:760 |
| [5] | Chang B H,Bai S J,Du D,Zhang H,Zhou Y.J Mater Process Technol,2010; 210:885 |
| [6] | Mei L F,Chen G Y,Jin X Z,Zhang Y,Wu Q.Opt Lasers Eng,2009; 47:1117 |
| [7] | Emel T,Eddy D,Alfred D,Erdinc K.Mater Des,2009;30:1193 |
| [8] | Zhang X D,Chen W Z,Eiji A,Fukuhisa M.Trans Chin Weld Inst,2002; 23(6):51(张旭东,陈武柱,芦田荣次,松田福久.焊接学报,2002; 23(6):51) |
| [9] | Zhao L,Zhang X D,Chen W Z,Bao G.Trans Chin Weld Inst,2004; 25(1):29(赵琳,张旭东,陈武柱,包刚.焊接学报,2004; 25(1):29) |
| [10] | Zhang X H,Zhang X D,Chen W Z,Lei H D.Laser Technol,2007; 31:419(张晓红,张旭东,陈武柱,雷华东.激光技术,2007; 31:419) |
| [11] | Zhao L,Zhang X D,Chen W Z,Wang J.Appl Laser,2004;24:21(赵琳,张旭东,陈武柱,王晶.应用激光,2004; 24:21) |
| [12] | Wahba M,Kawahitoc Y,Kondohc K,Katayamac S.Mater Sci Eng,2011; A529:143 |
| [13] | Seto N,Katayama S,Matsunawa A.Q J Jpn Weld Soc,2001; 19:600 |
| [14] | Zhou J,Tsai H L.Int J Heat Mass Transfer,2007; 50:2217 |
| [15] | Haboudoua A,Peyrea P,Vannesb A B,Peixc G.Mater Sci Eng,2003; A363:40 |
| [16] | Hayashi T,Matsubayashi K,Katayama S,Nobuyuki A,Matsunawa A,Omori A.Q J Jpn Weld Soc,2002; 20:228 |
| [17] | Kawaguchi I,Tsukamoto S,Arakane G,Honda H.Q J Jpn Weld Soc,2005; 23:259 |
| [18] | Matsunawa A.Sci Technol Weld Join,2001; 6:351 |
| [19] | Kuo T Y,Jeng S L.J Phys,2005; 38D:722 |
| [20] | Alessandro A,Alessandro F,Leonardo O,Giampaolo C.Opt Laser Technol,2012; 44:1485 |
| [21] | Seto N,Katayama S,Matsunawa A.Weld Int,2002; 16:451 |
| [22] | Matsunawa A,Mizutani M,Katayama S,Seto N.Weld Int,2003; 17:431 |
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%