MEASURING DEVICE FOR WELDING HEAT INPUT

摘要

PROBLEM TO BE SOLVED: To precisely measure a welding heat input by detecting correctly a welding speed required when moving manually a welding torch. SOLUTION: By calculating a welding time by the changes of a rate of rise in temperature being measured by a first temperature sensor 6 installed at a specific distance in a position in parallel with the weld line of steel 1 which is a material to be welded and that being measured by a second temperature sensor 7, and by operating the welding speed from a time required actually for welding the steel 1 in a specific distance, the welding heat input is correctly obtained.