| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dissimilar metal welding method capable of enhancing robustness by suppressing welding cracking and to provide a high quality dissimilar metal joined body suppressing welding cracking. <P>SOLUTION: After completing the first welding for emitting electron beam over the whole periphery of the abutting part of the rotor shaft 2 of the turbocharger 1 and the turbine blade wheel 4 once, the second welding for emitting the electron beam is carried out over the whole periphery again by displacing the beam irradiation position. <P>COPYRIGHT: (C)2012,JPO&INPIT |
