Method for welding railroad rails and means therefor

Details Method for welding railroad rails and means therefor Method for welding railroad rails and means therefor

B - Operations, Transporting

23

K

327/60

B23K 9/12 (2006.01) B23K 25/00 (2006.01)

Patent

CA 1179023

81/153 ABSTRACT OF THE DISCLOSURE A method for electroslag welding of railroad rails under field conditions employs a special mold bottom member and a special guide tube structure. The mold bottom member includes a metallic insert which is supported by heat-insulating means, e.g. ceramic material in a cavity in a bottom copper block. The ceramic effectively heat insulates the insert from the copper block so when arcina takes place at the start of the welding, the heat is retained by the insert, which forms part of the weld. The guide tube structure is flared toward the bottom and guides two continuously fed electrodes. The structure includes wing-like members near its bottom end. The bottom of the structure is designed with sharp corners, so that when arcing takes place some of the guide structure metal melts to form a uniform layer of molten metal, which aids in the melting of flux into a slug bath of uniformly distributed temperature.

418687

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