| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a joint having a sufficient welding part strength by obtaining a large welding load and a uniform contact in resistance welding. <P>SOLUTION: The pressure vessel is characterized by the feature that the pressure vessel is provided with a steel pipe 40 and an end plate 50 by forming and blanking the joint Q while abutting the taper surface 51d to a taper surface 41c of the opening end of the steel pipe 40 and the steel pipe 40 has a flange portion 45 which can be cut in the opening end side, and the joint Q presses the flange portion 45 along the axial direction C to the opening end side, while being abutted by the flange portion 45, and the joint Q presses the end plate 50 along the axial direction C to the steel pipe 40 side, while being abutted by the end plate 50, and the joint Q is welded and formed by passing an electric current. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
