Control method for manual welding inspection device

CN122164986APending Publication Date: 2026-06-09CHINA PETROCHEMICAL CORP +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROCHEMICAL CORP
Filing Date
2024-12-06
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing manual welding processes, the detection of welding heat input is not convenient and accurate enough, and real-time monitoring is not possible, making it difficult to guarantee welding quality.

Method used

By acquiring arc movement pulse signals, arc voltage, and welding current in real time during the welding process, data acquisition is performed using welding speed sensors and Hall sensors. The measured value of welding heat input is calculated, and an alarm signal is generated when the threshold is exceeded. Remote data transmission and storage are achieved by combining the GPRS network.

Benefits of technology

It enables real-time heat input monitoring during manual welding, improving the convenience and accuracy of detection, providing timely alarms to prevent welding defects, and ensuring welding quality.

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Abstract

The application provides a control method of a manual welding detection device, relates to the technical field of welding monitoring, and comprises the following steps: collecting welding heat input measured data in real time in a welding process, wherein the welding heat input measured data comprises an arc light moving pulse signal, an arc voltage and a welding current; calculating a welding heat input measured value based on the welding heat input measured data, and generating a heat input alarm signal when the welding heat input measured value exceeds a heat input threshold value; and calculating a dynamic resistance value based on the welding voltage and the welding current after the welding is completed, and generating a welding leakage alarm signal when the dynamic resistance value meets a preset condition. The application is characterized in that a photosensitive part is arranged in a light shielding tube, and when a welding arc passes through the light shielding tube, the arc light will enter the light shielding tube, so that the photosensitive part is triggered, a group of rectangular pulse signals are output after being regulated, and the instantaneous speed of the arc passing through the light shielding tube is calculated as the welding instantaneous speed.
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