对五种自制焊剂进行了正反极性的埋弧焊接,利用LECO氧分析仪测定熔滴的含氧量.结果表明:直流正接条件下熔滴的含氧量明显高于直流反接,且这一趋势随着熔渣碱度的增大而增大,间接证明了焊接电弧阴极和阳极熔渣/液态金属界面存在冶金电化学作用.进一步分析显示,在焊接参数一定的条件下,熔渣中氧离子浓度是影响熔滴阶段金属电化学增氧的关键因素.
参考文献
| [1] | Indacochea J E;Blander M shah S .Submerged arc welding:evidence for electrochemical effects on the weld pool[J].Welding Journal,1989,68(03):77-83. |
| [2] | Kim J H;Frost R H;Olson D L et al.Effect of electrochemical reactions on submerged arc metal composition[J].Welding Journal,1990,69(12):446-453. |
| [3] | Polar A;Indacochea J E;Blander M .Electrochemically generated oxygen contamination in submerged arc welding[J].Welding Journal,1990,69(02):69-74. |
| [4] | J. H. KIM;R. H. FROST;D. L. OLSON .Electrochemical Oxygen Transfer during Direct Current Arc Welding[J].Welding Journal,1998(12):488s-494s. |
| [5] | Blander M;Olson D L.Electrochemical effects on weld pool chemistry in submerged arc and D.C.electroslag welding[A].Gatlinburg Tenn,1986:363-366. |
| [6] | Stephen,Liu.Design Details for the Development of Flux-Related ArcWelding Consumables[C].第十次全国焊接会议论文集(第1册),2001:1-51. |
| [7] | 张鉴.冶金熔体的计算热力学[M].北京:冶金工业出版社,1990 |
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%