B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/41
B23K 25/00 (2006.01)
Patent
CA 1150365
ABSTRACT An electro-slag welding method and apparatus has been developed for butt-joint welding of steel rails or other metallic pieces having irregular cross section, in which the head and the web of the rail is surrounded with a conventional water cooled copper mold and the flange area is surrounded by a ceramic lined crucible. In addition to the conventional single central welding electrode, two or more electrodes are inserted through the lids of the ceramic crucible adjacent the outer ends of the rail flange so as to reduce the total welding current required to produce a complete flange weld and spread the welding energy, thereby reducing excess power and overheating at the central electrode, resulting in better metallurgical quality welds.
369258
Johnson & Hicks
Queen's University At Kingston
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