2) metal inert-gas welded joints
MIG焊接头
3) MIG welding
MIG焊接
1.
Study on MIG welding process of medium thickness 7A05 aluminum alloy
中厚度7A05铝合金MIG焊接工艺研究
2.
In the paper, MIG welding input is approximately treated as 3-dimensional heat sources along three axes.
建立了工件任意一移动点热源作用下温度场的瞬态模型,将MIG焊接热输入近似处理为沿3个坐标轴的三维串热源。
3.
The filling wire TIG and MIG welding tests were carried out on the thickness of 8.
试验结果表明,填丝TIG焊缝成形良好;MIG焊接时有飞溅现象,焊缝成形不及TIG均匀。
4) Plasma-MIG Welding
Plasma-MIG焊接
1.
Study of Droplet Transfer and Formation s Experiment of Welding Joint in Plasma-MIG Welding;
Plasma-MIG焊接熔滴过渡及焊缝成形的实验研究
5) hyperbaric MIG welding
高压MIG焊接
1.
The significance and difficulty of deepwater welding applied in offshore engineering were described as well as several new technologies such as hyperbaric TIG welding, hyperbaric MIG welding and friction stitch welding were introduced.
在描述海洋工程深水焊接的意义与困难的基础之上,系统介绍了应用于深水的高压TIG焊接、高压MIG焊接和摩擦叠焊,对以空气为加压气体的高压TIG焊接、外加纵向磁场强化高压脉冲MIG焊接熔滴过渡的技术方案与实验系统设计、水下摩擦叠焊实验装置方案设计等做了研究工作。
2.
This paper introduces hyperbaric TIG welding and the research works finished by BIPT Underwater Joining Group,especially several new technologies such as hyperbaric MIG welding,friction stir welding,friction stitch welding and radial friction welding,which can satisfy the future demands of deepwater engineering.
介绍了高压TIG焊接技术以及北京石油化工学院水下连接研究小组在该领域取得的成果,特别针对深水应用的要求,介绍了几种具备较好应用前景的新技术,即高压MIG焊接、搅拌摩擦焊接、摩擦叠焊和径向摩擦焊接,最后提出了发展我国海洋工程连接技术的若干建议。
6) double-wire MIG welding
双丝MIG焊接
1.
Because the heat input quantity during double-wire MIG welding thick plates was great,the welded joint was in the high temperature state for a long period of time and the former solidified metal experienced an "involuntary" aging treatment,which mean that the weld metal had reached the "peak aging" or sub-"peak aging" already.
试验发现20 mm厚2519铝合金双丝MIG焊接接头存在时效弱化问题,这是由于厚板双丝MIG焊热输入量大,接头长时间处于高温状态,已凝固焊缝金属相当于已经接受了一次时效处理,接头在焊后已经达到“峰失效”或接近“峰失效”的欠时效状态。
补充资料：焊接接头晶间腐蚀
焊接接头晶间腐蚀
welded joint intercryctalline corrosion
honjle」}etou jingj旧n fush{焊接接头晶间腐蚀(welded joint intererys-talline eorrosion)在焊接接头处出现的沿晶粒边界发生的腐蚀现象。外观仍可有金属光泽，但实际上晶粒已失去联系，钢质已变脆。在奥氏体不锈钢部位有焊缝晶间腐蚀、敏化区腐蚀和刀状腐蚀等三种不同部位的晶间腐蚀。关于奥氏体不锈钢的晶间腐蚀机理有多种学说，其中以碳化物(如er23e。或(er、Fe)23e。等)在晶界沉淀现象的“贫铬理论”比较为人们所接受。所以为防止这类晶间腐蚀尽量降低含碳量，使焊缝金属含有一定量的稳定元素(如钦、妮等)以防止或降低晶界Cr23C。的形成。此外，焊缝的组织状态也有影响，单相奥氏体组织的焊缝有利于柱状晶的发达，出现贫铬层后会使腐蚀贯穿于晶粒之间，若焊缝为奥氏体了加高温铁素体占的双相组织，由于树枝状被打破，不能构成集中的腐蚀通道。高铬铁素体也会有晶间腐蚀，但与奥氏体钢不同的是从高温急冷下来即有晶间腐蚀倾向，可通过650一85oC加热、缓冷使铬扩散均匀化来消除贫铬层，防止晶间腐蚀。 (许祖泽)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条