PROCEDURE FOR WELDING BY INTERMEDIATE CASTING OF FINELY PERLITIZED LANES.

摘要

THE INVENTION REFERS TO A PROCEDURE FOR THE WELDING OF INTERMEDIATE MELTING OF RAILS WITH A FINE PERLITICAL STRUCTURE THROUGH A STEEL POINT GENERATED ALUMINOTHERMICALLY IN ONE OF THE FOUNDRY MOLDS SURROUNDING BOTH END OF THE RAIL. AFTER WELD COOLING, THE WELDING SURFACE AREA AND HEAT INFLUENCED ZONES ARE HEATED NEARLY FROM THE UPPER ZONE BY MEANS OF A SCHOCK TYPE BURNER DURING A SPACE OF TIME FROM 50 TO 150 SECONDS. THE BURNER FEEDS RESPECTIVELY WITH AT LEAST 10,000 L / HOUR OF OXYGEN AND 3,500 L / HOUR OF PROPANE OR ACETYLENE, THE COMBUSTION SURFACE OF THE BURNER HEAD IS POSITIONED AT A DISTANCE FROM THE SURFACE OF PASSAGE OF WELDING AND ZONES OF INFLUENCE OF WARMING, IN A CORRESPONDING VALUE IN MILLIMETERS MEASURED OF 0.1 RESPONSIBLE TO THE MEASURED WEIGHT OF THE RAIL USED, MEASURED IN KG.