FLASH-BUTT WELDING EQUIPMENT AND WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To realize flash-butt welding to improve the quality of a weld zone by controlling hardening of the weld zone. ;SOLUTION: With this flash-butt welding equipment equipped with gas discharge ports 2 to supply combustible gas to upper and lower sides of the welded portion of the material to be flash-butt-welded, a system to supply the combustible gas to the gas discharge ports 2 is equipped with an adjusting means 6 for the type and flow rate of the combustible gas. Multiple gas discharge ports for the combustible gas are arranged in the width direction of the welded material, and the combustible gas supply system is provided with a means to control the flow rate and quantity of input heat of the combustible gas to be supplied to the gas discharge ports in the width direction of the welded material.;COPYRIGHT: (C)1999,JPO