RAIL WELDING METHOD AND REFRACTORY MATERIAL FOR EMERGENCY REPAIR

摘要

PROBLEM TO BE SOLVED: To provide a rail welding method capable of urgently repair a broken rail by welding in a short time without using a boring machine for drilling the rail and a rail cutter when breakage occurs on the laid rail and also enabling normal train operation until complete repair. SOLUTION: An L-shaped refractory material 20 covering the head of the rail excluding one side-face of the rail head (1a) is installed on the broken opening (broken part) 2 of the broken rail 1. The front and the bottom of the rail are held by a pair of molds (refractory materials) 11 having vertical holes 12 joined to the bottom end (1c) of the rail. A weld excess metal 16a is formed between the refractory materials and the front of the rail along the shape of the broken part. Molten iron is cast in vertical holes 12 on the non-installation side and the other side of the L-shaped refractory materials 20 at the rail head from one vertical hole 12 through the bottom end of the rail. Thus, the broken opening 2 can be welded. COPYRIGHT: (C)2005,JPO&NCIPI