| 摘要 |
1485419 Welding by pressure METALLWERK MERKUR GmbH 21 Aug 1974 [5 Sept 1973 (2)] 36720/74 Heading B3R In a method of cold pressure welding two workpieces, a projection having spaced parallel ribs on one workpiece is inserted into a tapered recess in the other workpiece, the recess having walls which are engaged by the ribbed projection and the ribbed projection being inserted in a direction perpendicular to the direction of the ribs. An elongated panel like workpiece 1, Fig. 1, has a projecting bead 4 on the flange 3, the bead having parallel ribs 10, Fig. 5, with concave connecting surfaces 11, and a tapered recess 8 on another flange 7 and the workpiece 1 is pressed against another panel like workpiece 2 having a recess 6 similar to the recess 8 and a bead 9 similar to the bead 4, the beads 4 and 9 becoming cold welded in the recesses 6 and 8. During pressing together of the workpieces the ribs on the beads become deformed and flow in contact with the recesses. In one modification the beads are provided on the main surfaces of the workpieces and the recesses are on extended flanges and in another the bead has a narrower leading portion and a wider trailing portion, both portions having ribs and engaging a correspondingly shaped recess. In yet another modification one panel member having spaced portions carrying inwardly projecting beads at one end and joined by a web at the other end provided with tapered recesses is joined to another similar member, the beads being cold pressure welded in the recesses. |
