Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21
Online ISSN : 2424-3086
ISSN-L : 2424-3086
2013.7
Session ID : A008
Conference information
A008 Fundamental Study on Micro-welding of Copper by Green Pulsed YAG Laser
Sunao TAKAIShin-ichi NAKASHIBAYsuhiro OKAMOTOAkira OKADATomokazu SAKAGAWA
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract
Copper is widely used as an electric wiring material in electric and electronic industries because of its high electrical conductivity. However, high thermal conductivity of copper leads to the rapid diffusion of heat, which results in difficulties in micro-welding. Therefore, micro-welding of copper by a pulsed green laser of 532nm was investigated to control the heat input in micro-spot. 1.0kW peak power at spot diameter less than 200μm could perform a keyhole welding of 1.0mm thickness copper plate. Penetration depth increased with decreasing the spot diameter and increasing the pulse duration. The porosities could be reduced by extending the pulse duration and controlling the pulse waveform.
Content from these authors
© 2013 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top