Molten pool monitoring device for high-power welding

Abstract

The embodiment of the invention discloses a molten pool monitoring device for high-power welding, and relates to the technical field of laser machining equipment. The molten pool monitoring device comprises a laser welding head, an adjusting structure, an optical imaging system, a cooling device and a host computer. One end of the adjusting structure is connected with the laser welding head, and the optical imaging system is connected to the other end of the adjusting structure. The adjusting structure moves the optical imaging system into a reflection range of reflected light of a welding surface, and the optical imaging system collects molten pool images of the welding surface. The host computer is in wired connection or wireless connection with the optical imaging system, acquires and processes the molten pool images of the welding surface, and monitors the morphology of a molten pool in real time. The cooling device is installed above the optical imaging system, and is used for lowering the temperature of the optical imaging system. The position of the optical imaging system is moved by the adjusting structure to enable the optical imaging system to collect the morphology of the molten pool on the welding surface, and the host computer monitors the welding process in real time by acquiring and processing the images of the molten pool morphology collected by the optical imaging system.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of laser processing equipment, in particular to a molten pool monitoring device for high-power welding. Background technique [0002] Laser welding includes low-power welding and high-power welding. The power of low-power welding is generally below 3 kilowatts. CCD cameras can be used to observe the shape of the weld pool and judge the welding effect. The power of high-power welding is above 3 kilowatts. The power of laser welding is high, and the reflection and heat radiation on the surface of the molten pool are enhanced, which makes the metal vapor and plasma cloud increase. Using a CCD camera can only observe a group of flames, but cannot observe Complete molten pool morphology, it is difficult to monitor and observe the welded pool morphology to judge the effect of welding. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present in...

AI Technical Summary

Problems solved by technology

The power of high-power welding is above 3 kilowatts. The power of laser welding is high, and the reflection and heat radiation on the surface of the molten pool are enhanced, which makes the metal vapor and plasma cloud increase. Using a CCD camera can only observe a group of flames, but cannot observe Complete molten pool morphology, it is difficult to monitor and observe the welded pool morphology to judge the effect of welding

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