| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a welding method that sets the optimal welding current corresponding to a gap between plate materials which configure a workpiece by easily calculating the gap without increasing working hours. <P>SOLUTION: The welding method is to weld a workpiece W formed by joining a plurality of plate materials W1 and W2 on top of each other by flowing electric current under the condition of the workpiece W being held by a movable electrode 21 and a static electrode 22. This welding method includes: a process to measure the pressurization start-up time (t<SB POS="POST">2</SB>-t<SB POS="POST">1</SB>) from the start of pressurizing the workpiece W to the time of reaching a predetermined pressurization force; a process to calculate the gap amount between the joined plate materials W1 and W2 before the start of pressurization based on the measured pressurization start-up time; and a process to select setting of the welding current flowed to the pressurization part of the workpiece W based on the calculated gap amount. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
