Method and device for controlling vertical welding process of applying synchronizing pulse compound magnetic field

Abstract

The invention relates to a method and a device for controlling a vertical welding process of applying a synchronizing pulse compound magnetic field. The method and device are used for mainly solving the technical problems of low degree of automation of the present vertical welding, difficulty in seam tracking, and the like. The device comprises a vertical welding arc tracking sensor, a welding source, a wire feeder, a Hall sensor, a tracking system controller, an executing mechanism, a current voltage detecting module, a synchronous thrust pulse generator and a power amplifier circuit, wherein the vertical welding arc tracking sensor comprises a welding gun, a horizontal magnetic field generating device and a thrust magnetic field generating device; the horizontal magnetic field generating device is used for generating an alternating magnetic field and causing an electric arc to laterally oscillate and scan the welding joint, thereby acquiring welding joint information and performing welding joint tracking; a thrust magnetic field generated by the thrust magnetic field generating device is used for causing the electric arc and molten drop to be affected by a suitable upward thrust, so that the gravity suffered by the molten drop and a melting pool during the vertical welding process is counteracted, the welding joint tracking of the vertical welding is realized and the welding efficiency of the vertical welding is increased under the condition of ensuring the welding joint quality of the vertical welding.

Description

technical field [0001] The invention belongs to an automatic welding device, in particular to a vertical welding process control method and device for applying a synchronous pulse composite magnetic field. Background technique [0002] As a common welding method in industrial production, vertical welding is widely used in bridges, shipbuilding, boilers and other industries. Until now, vertical welding operations have largely relied on manual arc welding, while vertical welding of thick and large weldments often uses gas-electric welding. Manual arc welding has low efficiency and high labor intensity, while gas electric welding has high welding line energy, and the weld tissue is easy to overheat and needs heat treatment. At present, the magnetron arc sensor is mainly used for seam tracking in the flat welding position. For vertical welding, due to the influence of gravity on the droplet and molten pool, it is still difficult to achieve seam tracking while ensuring excellent...

AI Technical Summary

Problems solved by technology

Manual arc welding has low efficiency and high labor intensity, while gas electric welding has high welding line energy, and the weld structure is easy to overheat and needs heat treatment, etc.

At present, the magnetic control arc sensor is mainly used for seam tracking in the flat welding position. For vertical welding, due to the influence of gravity on the droplet and molten pool, it is still difficult to achieve weld seam tracking under the condition of ensuring excellent weld formation.

Images