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Spot welding quality real-time ultrasonic non-destructive testing device and method

A non-destructive testing and ultrasonic technology, applied in the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, welding equipment, resistance welding equipment, etc., can solve problems such as ultrasonic probe positioning errors, avoid positioning errors, improve adaptability, and strong reliability Effect

Inactive Publication Date: 2017-12-15
WUHAN UNIV OF TECH
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a spot welding quality real-time ultrasonic non-destructive testing device and method, which combines the advantages of the two methods of online real-time monitoring and post-weld non-destructive testing to solve the problem of positioning error of the ultrasonic probe and realize On-line synchronous process of resistance spot welding and its quality inspection

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  • Spot welding quality real-time ultrasonic non-destructive testing device and method
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  • Spot welding quality real-time ultrasonic non-destructive testing device and method

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Embodiment Construction

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Such as figure 1 As shown, the spot welding quality real-time ultrasonic nondestructive testing device of the present invention includes an ultrasonic probe 4 , an ultrasonic detector 7 , a computer 8 , a spot welding machine and a spot welding electrode 1 . The ultrasonic probe is connected with the ultrasonic detector 7 , and the ultrasonic detector 7 is connected with the computer 8 .

[0025] The ultrasonic probe 4 has the functions of transmitting and receiving ultrasonic signals at the same time. The ultrasonic probe 4 is embedded in the spot welding electrode 1 , and the spot welding electrode 1 is provided with a cavity for accommodating cooling water 3 . The ultrasonic probe 4 is placed in the cavity, ...

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Abstract

The invention relates to a spot welding quality real-time ultrasonic non-destructive testing device and method. The device comprises an ultrasonic probe, and an ultrasonic detector and a computer connected to the ultrasonic probe. The device also comprises a spot welding machine and a spot welding electrode. The ultrasonic probe has functions of emitting and receiving an ultrasonic signal. The ultrasonic probe is inserted into the spot welding electrode. The method comprises S1, starting the spot welding machine, the ultrasonic detector and the computer and feeding cooling water into the spot welding electrode through a cooling water hole, and S2, in the process of resistance spot welding on a plate, emitting a series of ultrasonic scanning pulses through the ultrasonic probe inserted in the spot welding electrode, collecting a corresponding reflection signal, converting the reflection signal into an ultrasonic reflection oscillogram through the ultrasonic detector and transmitting the ultrasonic reflection oscillogram into the computer in real time. The device realizes visual, accurate and efficient welding spot quality comprehensive analysis in the spot welding process and realizes the online automatic detection of spot welding quality of a thin plate in the whole process.

Description

technical field [0001] The invention relates to the field of non-destructive testing, more specifically, to a real-time ultrasonic non-destructive testing device and method for spot welding quality. Background technique [0002] Spot welding is an easy, cost-effective method of joining sheet metal and is suitable for high-speed automated production. The manufacturing quality of the car body directly affects the service life of the whole vehicle. Resistance spot welding is the main welding process for car body manufacturing at present. Therefore, the non-destructive testing technology of solder joint quality is of great significance to ensure the quality of car body assembly and welding. With the rapid development of the automobile industry, the requirements for the quality of resistance spot welding are constantly increasing, and at the same time, the requirements for the accuracy, efficiency, cost, automation and online degree of spot welding quality non-destructive testing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04B23K11/11
CPCB23K11/11G01N29/04G01N2291/2672
Inventor 华林王彬汪小凯宋雨珂
Owner WUHAN UNIV OF TECH
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