Development and practical study on precision bonding technology of small metal parts in solid state

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420064
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Nippon Institute of Technology
• Principal Investigator: JIN Masahiko 日本工業大学, 工学部, 教授 (80265371)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 金属 / 固相接合 / 超音波 / アルミニウム合金 / 純チタン

Outline of Final Research Achievements

Various mechanical components have been miniaturized, and high precision are required to assemble small metal parts. Several metallurgical welding methods, such as laser and electric resistance welding and FSW, have various problems, such as thermal deformation and oxide generation because of the melting of materials. In an effort to solve these problems, an ultrasonic welding method is proposed. This method is a solid-state metallurgical bonding process without the melting of materials. Therefore, thermal deformation and oxide generation are greatly reduced compared with the above-mentioned processes. The author believes that this process is effective in precisely assembling small metal parts. Concretely, welding of thin sheet metals with conditions of butt, T-shape and lap welding is investigated. As a result, it is fundamentally demonstrated that the joining is possible, and the relationship between strength and the shape of the bead on the bonding surface.

Free Research Field

生産加工・加工学