| 摘要 |
PCT No. PCT/EP88/00763 Sec. 371 Date Nov. 1, 1988 Sec. 102(e) Date Nov. 1, 1988 PCT Filed Aug. 26, 1988.An alignment tool, such as a Z-bar or a crossover Z-bar, for use in a welding device for seam welding cylindrical can bodies, has the improvement that the guide grooves for the Z-bar are formed in inserts mounted in the body so that at least the material of the body can be non-conductive and non-magnetic and the insert can be non-magnetic to prevent or lessen the chances of sparking in the welding machine. In one embodiment, the inlet end is provided with an inlet body formed of an impact resistant, wear-resistant material, such as a tungsten carbide, while the inserts in which the guide grooves are formed is formed of a ceramic material that is both non-magnetic and non-conductive.
|
