| 摘要 |
PURPOSE:To improve the quality of a connecting-rod by forming the spherical part, rod part, and the pad part from the material in integral structure and forming the bearing alloy for the sliding surface of the pad part through centrifugal casting and constituting the connecting-rod having overlay on the surface. CONSTITUTION:Six pices of material 4 are assembled in ring form so as to be jointed onto the periphery of a core bar 6, on the installing apparatus having the core bar 6 at the center part, then a pressing plate 7 is installed, and the upper parts (flat surface parts) 8-8 of the spherical part 1 of the material 4 are pressed in the direction of arrows and fastened tightly. Then, the installed plate is layed on a welding board, and the jointing parts of the materials 4 are welded and joined, thus welding is completed. The figure 11 indicates the built-up welding part. After the pressing plate 7 and the core bar 6 are dismounted, the connecting rod is installed onto the machine such as lathe, and the inner diameter of a ring-shaped material 12 is machined into a prescribed dimension R1. |
