Weld evaluation during a welding process

By using ultrasonic and optical sensors in welding equipment to automatically evaluate welding quality, the time-consuming and expensive welding quality control problem in the prior art is solved, and a fast, reliable welding evaluation and efficient welding process are achieved.

CN116238173BActive Publication Date: 2025-12-16GEORG FISCHER PIPING SYST PLC
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Patent Information

Application Number
CN202211567892.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-12-07
Filing Date
2022-12-07
Publication Date
2025-12-16
Estimated Expiration
2042-12-07

AI Technical Summary

Technical Problem

Existing quality control methods for butt welding are time-consuming and expensive, requiring manual visual assessment and ultrasonic inspection, and the equipment is complex, making it impossible to assess weld quality in real time during the welding process.

Method used

Welding quality is automatically assessed using sensors with different inspection methods (such as ultrasonic and optical sensors), and inspection data is evaluated through algorithms to monitor the welding process in real time, reducing human intervention.

Benefits of technology

It enables rapid and reliable welding quality assessment, reduces manual intervention and equipment complexity, lowers costs, and improves welding efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

A method and system for evaluating butt welding of plastic pipes or fittings in a welding apparatus, comprising a welding apparatus, an inspection apparatus with an inspection head having two sensors, a controller and a memory, with the following steps: - clamping or fixing pipe ends to be welded with opposite end faces in the welding apparatus, - automatic alignment or adjustment of the inspection head based on pipe parameters for subsequent acquisition of the pipe ends, - checking of predetermined zones at the two pipe ends by means of at least one first sensor arranged in the inspection head, - assessment of the determined inspection data based on predetermined values, - checking of the end faces of the pipe ends by means of a second sensor, wherein the second sensor uses a different inspection method than the first sensor, - assessment of the determined inspection data based on predetermined values, - performing a welding process, including recording the welding process, characterized in that a final assessment of the welding is performed based on the determined inspection data and the recorded welding process.
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Citation Information

Patent Citations

  • Contactless inspection for butt welding

    EP2963380A1

  • Detection of a weld seam geometry

    EP3550256A1

  • Test of sleeve welding

    EP3816621A1

  • Visual welding seam surface quality detection sensor based on line structure light

    CN101750416A

  • Device and method for manufacturing tube bodies

    CN103958160A