| 摘要 |
PURPOSE:To make unnecessary the heating and complicated apparatus, to improve the producibility, and to obtain th jointed boby of high strength, by pressure jointing two metallic parts provided with specially shaped cylindrical joint end face, using a specially shaped joint parts. CONSTITUTION:Two pieces of disk or cylinder type metallic parts 110, 120, to be jointed are provided with grooves 112, 122, along whole periphery of the joint end face (the groove has a hollow portion of average depth 0.2-1.0mm in the bottom, and rugged portions 112a, 122a, with rugging height 0.2-1.0mm); a ring type clearance 140 with breadth T0 and height H0 is interposed between two metallic parts 110, 120; meantime, a joint parts 130 (breadth T1 and height H1 are equal to or a little smaller than T0 and H0), whose deformation resistance is smaller than that of metallic parts 110, 120, is inserted into the clearance 140; and then, the rolling is worked by a specially shaped (stated separately)dies 30; hereby, the joint parts 130 is forced to plastically flow into the rugged portions 112a, 122a, and two metallic parts 110, 120, are jointed. Above stated special conditions are based on the reason for restriction (stated in separate paragraph). Thus obtained joint construction has a stable strength, and is free from the thermal deformation due to the welding; as a result, the complicated apparatus becomes unnecessary, and the producibility is improved. |
