| 摘要 |
1282316 Welding by pressure NITRO NOBEL AB 22 Sept 1969 [23 Sept 1968] 46625/69 Heading B3R A method of reinforcing articles of metal with wire like elements 16 of harder metal or greater tensile strength charaterized in that the elements are interposed between one or more metal parts 10, 12, 14, such as aluminium in which the wire like elements become embedded by the detonation of at least one layer of explosive 18, 20. The detonation is carried out simultaneously and the explosive may comprise ammonium nitrate or pentaerythritoltetranitrate. Other mbodiments are described according to the invention which include wire elements interposed longitudinally between two concentric tubes thus producing longitudinally extending folds on its outer face; alternatively a helical spring is interposed between outer and inner tubes. A modification of Fig. 1 comprises the wires arranged to cross one another to form a net, and a further embodiment is described, Fig. 7 (not shown), in which a thin plate (42) and a net (44) are wound on a cylinder (46) and the roll is then removed and introduced as a unit (48) into a steel mould (50). A layer of explosive is then applied to the inner side of the roll. The wire elements 16 are preferably silver steel. |
