Evaluation of 'Teromatic' welding process for building up worn rail and crossing components (TM-MET-38)

At present, maintenance welding of rails and crossings is carried out almost exclusively using the manual metal arc (MMA) process, using petrol-or diesel-driven a.c. or d.c. welding machines. One of the main limitations of the MMA process is the need to frequently interrupt welding to replace the consumable electrode. Not...