| 摘要 |
PURPOSE:To improve reliability of brazing joint by providing an annular rib portion to the flat surface of exhaust tube support. CONSTITUTION:An annular rib 12a is provided at the flat part of an exhaust tube support 12. Thereby, a stress generated during chip off is alleviated by the rib 12a and a residual stress of brazing joints 19, 20 and deformation of exhaust tube support 12 are alleviated, improving reliability of brazing joints. |
