Development of micro-arc welding process

微弧焊接工艺的发展

• 批准号: 07555219
• 负责人: HIRATA Yoshinori
• 金额: $ 5.18万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555219/
• 关键词: Arc welding process; Micro-discharge; Electrical breakdown; Pulse discharge; Field emission; Melting spot; STM; 真空絶縁破壊; インチワ-ム; SEMその場観察

Features of micrometer gap discharge between a wire and a plane has been experimentally investigated in both environments of Scanning Electron Microscope vacuum and the atmosphere. The experimental setup, which is consisted of a thin tungsten electrode, nanometer controlled actuators such as a piezoelectric tripod and an inchworm, and monitoring devices of current and voltage, was constructed. By applying several hundreds voltages to the gap, electrical breakdown and at the same time very small melting of the anode occurs. Diameters of melting spots at the plane specimen depend on the amount of discharge energy. A weld bead like melted zone can be formed by traveling electrode along the surface and applying repeated pulsed voltage for electric discharge.

在扫描电子显微镜真空和大气的两个环境中，已经研究了电线和平面之间微尺间隙排放的特征。实验设置由薄钨电极，纳米控制的执行器，例如压电三脚架和Inchem虫，以及电流和电压的监测设备。通过在间隙上施加数百个电压，电崩解，同时发生了非常小的阳极熔化。平面样品处熔点的直径取决于排放能量的量。可以通过沿表面的电极进行电极并施加反复的脉冲电压来形成焊珠，以形成电压。

项目成果

H.Maruo: "Microdischarge phexomera across agap of submicron order" Welding International. 9. 375-383 (1995)

H.Maruo：“跨越亚微米级间隙的微放电火球”焊接国际。

H. Mamo, Y. Hirata, K. Ozaki: "Microdischarge phenomena across a gap of submicron order" Welding International. 9. 375-383 (1995)

H. Mamo、Y. Hirata、K. Ozaki：“跨越亚微米级间隙的微放电现象”焊接国际。