Welding equipment

Abstract

The invention discloses welding equipment which comprises a welder device and a positioner, and further comprises a temperature measuring device, a pre-warning device and a control device, wherein the temperature measuring device is used for measuring practical temperature data of an un-molten area at the front end of a welding molten pool of a to-be-measured welded part; the pre-warning device is pre-stored with standard temperature data of the un-molten area at the front end of the welding molten pool of a welding joint under a through-welding state, and is in communication connection to the temperature measuring device for realizing incomplete-welding pre-warning according to comparison between the practical temperature data and the standard temperature data; and the control device is in communication connection to the temperature measuring device, the welder device and the positioner, and is used for regulating relative positions of the temperature measuring device, a welding gun of the welder device and a workbench, so that the temperature measuring device can monitor the practical temperature data of the front end of the welding molten pool of the to-be-measured welded part in real time while the welding gun is used for welding the to-be-welded part. During welding, the welding equipment can monitor whether the welding joint has incomplete welding defects or not, and timely regulates welding parameters, so that welding quality is guaranteed.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a welding device capable of monitoring incomplete penetration defects of welded joints in real time. Background technique [0002] As a basic process, welding is widely used in aerospace, ships, bridges, machinery, metallurgy, energy, petrochemical, construction and other industries. Since the welding process is often affected by various factors, defects such as cracks, pores, inclusions, incomplete fusion, and incomplete penetration sometimes inevitably appear in the weld. Among them, incomplete penetration is one of the most common and serious welding defects. [0003] GB 6417—1986 "Classification and Explanation of Weld Defects in Metal Fusion Welding" defines in-penetration: in-penetration is the phenomenon that the root of the joint is not fully penetrated during welding. [0004] Incomplete penetration defects will cause the following two problems: first, it reduces the ...

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Problems solved by technology

[0004] Incomplete penetration defects will cause the following two problems: first, it reduces the effective cross-sectional area of ​​the weld, destroys the continuity of the welded joint, and reduces the strength of the welded joint; second, it is easy to Stress concentration occurs, which seriously reduces the fatigue strength of the weld and increases the probability of it becoming a crack source, thus causing damage to the weld

[0006] At present, non-destructive testing methods such as ray, ultrasonic, magnetic particle, penetration, electromagnetic, etc. are mostly used for detection of incomplete penetration defects, but these detection methods are all carried out on welded parts, that is to say, after welding is completed. In this way, if it is detected that there is no penetration, it needs to be re-welded, which increases the economic cost and time cost of welding.

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