Procedure optimization of seam welding for titanium plate and stainless steel mesh

钛板与不锈钢网片滚焊工艺优化研究 Procedure optimization of seam welding for titanium plate and stainless steel mesh 于康 YU Kang 1 2 first-author 孙亚非 SUN Yafei 1 2 谢屹 XIE Yi 1 2 上海空间推进研究所 上海空间推进研究所 Shanghai Institute of Space Propulsion Shanghai Institute of Space Propulsion 上海空间发动机工程技术研究中心 上海空间发动机工程技术研究中心 Shanghai Engi neering Research Center of Space Engine Shanghai Engi neering Research Center of Space Engine 介绍钛合金板与不锈钢网片滚焊工艺优化研究,主要研究滚焊过程网片断裂机制、滚焊压力及能量输入对不锈钢网片的影响。结果表明:滚焊焊缝中存在"2次"滚焊过程,钛合金板与不锈钢网片在一次滚焊过程中产生了脆性金属间化合物,二次滚焊时,在大压力和大能量输入作用下导致网片断裂;采用较小的滚焊压力和较小的热输入量时,在保证焊缝撕裂试验合格的前提下,可以有效地降低网片断裂概率。经过试验优选比较,最终优选出小压力滚焊参数为:滚焊电极压力0.08 MPa、焊接电流900 A、滚焊速度2 r/min;优选的滚焊参数进行直线焊缝和圆形焊缝试验件泡破点试验,合格率分别达到为85%与90%。 The procedure optimization of seam welding for titanium plate and stainless steel mesh is described,and the effects of the fracture mechanism of mesh,seam welding pressure and energy input in welding process on stainless steel mesh are mainly studied. The results show that there is a "twice" seam welding process in the weld,the titanium plate and stainless steel mesh produce brittle intermetallic compounds in the first seam welding process,and in the second seam welding,the large pressure and large welding heat input lead to mesh break;when using smaller seam welding pressure and smaller welding heat input,and under the premise of ensuring qualified weld tear test,the mesh fracture probability can be effectively reduced;through preferred test, ultimately preferred a low pressure seam welding parameters are:seam welding electrode pressure of 0.08 MPa,welding current of 900 A,seam welding speed of 2 r/min;the preferred seam welding parameters are used in straight and circular seam weld test pieces,and the pass rate is 85% and 90% respectively. 钛合金板 不锈钢网片 滚焊 压力 titanium plate stainless steel mesh seam welding pressure TG457.1 2022-03-08 3 50