| 摘要 |
995,678. Welding by pressure. BRITISH WELDING RESEARCH ASSOCIATION. April 20, 1964 [April 22, 1963], No. 15781/63. Heading B3R. In joining two lengths of wire a wire insert is rotated between the ends of the lengths under light contact pressure and after stopping the rotation the pressure is increased to friction weld the insert between the lengths. A length of wire 1 is held in a fixed clamp 2, a length of wire 3 is held in a movable clamp 4 and a wire insert 6 is held between the three jaws of a collet 7 which are held in place by helically slotted sleeves 8, 9 drawn together by bolts 10. The insert is rotated through the sleeves 8, 9 which are driven by rollers 11, 12, 13 and faces of the wire insert and lengths are held under pressure. When the welding temperature is reached the rotation is stopped and a forging pressure is applied. The collet and sleeves are removed from the wire. In a modification the sleeves are tapered and are engaged by tapered rollers. The wires may be of carbon or stainless or rust-resisting steels. |
