OPERATION MANAGEMENT DEVICE, OPERATION MANAGEMENT METHOD, AND OPERATION MANAGEMENT PROGRAM FOR HIGH-FREQUENCY RESISTANCE WELDING AND INDUCTION WELDING

摘要

Disclosed is an operation management device that manages an electric resistance welding operation in which a strip-shaped metal plate is formed into a tube in a manner such that both ends thereof gradually become mutually facing while the metal plate is being conveyed, and in which a V-shaped convergence section where both ends mutually face and come together is welded. In addition, the operation management device is equipped with: a measurement device that measures, on the basis of an image of the region comprising the aforementioned V-shaped convergence section, the distance (L) [mm] between a first V convergence point at which the aforementioned both ends of the aforementioned metal plate geometrically intersect and a second V convergence point that is the attaching point of the aforementioned both ends of the aforementioned metal plate, and the V convergence angle (?) [°] of the first V convergence point; and an assessment unit that assesses whether or not the aforementioned distance (L) [mm] and the aforementioned V convergence angle (?) [°] satisfy formula (1). (1) Lmin(?/?st)-0.15 ? L ? 35