Device and method for measuring heat input of manual welding

Abstract

The invention relates to a manual welding heat input measuring device and method. The measuring device comprises a welding torch end part and a welding machine end part. The welding torch end part comprises a locking and alignment structural component, inertia modules and an integrated chip, wherein the inertia modules and the integrated chip are arranged on the locking and alignment structural component. The welding machine end part comprises a communication module, a data collection module and an upper computer. The measuring method comprises the steps that welding rod acceleration speed and angular speed information is collected by the inertia modules and is transmitted to the communication module after being processed by the integrated chip, and the communication module transmits obtained data to the upper computer; welding voltage and welding current information is collected by the data collection module and transmitted to the upper computer; and the upper computer obtains a heat input value through calculation. By means of the measuring device and method, manual welding heat input automatic real-time measuring is achieved, a weld joint does not need to be measured manually, and the production efficiency and the welding quality of workpieces are improved.

Description

technical field [0001] The invention belongs to the field of welding, and in particular relates to a manual welding heat input measuring device and method. Background technique [0002] At present, in the nuclear power and pressure vessel industries, according to the requirements of welding standards, the welding heat input (heat input = welding voltage * welding current / welding speed) used in product welding must be within the coverage of welding procedure qualification, so as to ensure the welding joints of important components Quality is under control. For critical components, it is usually necessary to measure the heat input throughout the welding process. At present, automatic welding can realize the automatic measurement of welding heat input value, but for each welding method of hand-held welding torch, the welding speed cannot be calculated by the similar rack and pinion transmission structure of automatic welding, and the welding speed depends entirely on the wel...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this method is that it is inefficient and requires a special person to measure or time the length, which increases the labor cost and cannot realize the automation of the whole process. The weld seam length measurement operation has an impact on the welder's welding. For example, the welder generally tries to ensure the continuity of the welding process. It is especially important to solve the problem of efficiency and labor cost to avoid welding defects caused by molten pool cooling or to increase the operation of grinding joints

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