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Hidden crack detection method and device for metal plate stamping forming part

A stamping forming and metal sheet technology, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, etc., can solve the problems of low efficiency of dark crack detection devices, high missed detection rate, and difficult automatic detection, etc., to achieve automatic detection, high efficiency effect

Active Publication Date: 2022-04-12
武汉中誉鼎力智能科技有限公司
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Problems solved by technology

[0004] In view of this, on the one hand, the present invention proposes a dark crack detection device for sheet metal stamping and forming parts to solve the problem of low efficiency, high missed detection rate, and difficulty in realizing the dark crack detection device for traditional sheet metal stamping and forming parts. Automatically detected problems

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  • Hidden crack detection method and device for metal plate stamping forming part
  • Hidden crack detection method and device for metal plate stamping forming part
  • Hidden crack detection method and device for metal plate stamping forming part

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0045] like figure 1 As shown, the blind crack detection device of sheet metal stamping and forming parts in this embodiment includes an excitation generating device, a coil 1, a magnet 2, an echo receiving device and a signal processing device.

[0046] The coil 1 and the magnet 2 are close to the part to be tested and installed at the same position of the part to be tested. There is a gap between the coil 1 and the surface of the part to be teste...

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Abstract

The invention provides a dark crack detection device for a metal plate stamping forming part. The dark crack detection device comprises an excitation generation device, a coil, a magnet, an echo receiving device and a signal processing device. The surface of the to-be-detected part is excited by the high-frequency excitation current to generate ultrasonic waves, dark crack detection of the metal plate stamping forming part is achieved through the ultrasonic echo signals, nondestructive detection is achieved, the to-be-detected part is not damaged, efficiency is high, missing detection is avoided, and automatic detection is achieved.

Description

technical field [0001] The invention relates to the technical field, in particular to a method and a device for detecting dark cracks of sheet metal stamping and forming parts. Background technique [0002] Cracks and hidden cracks will occur during the stamping process of metal parts. The main reason is that the actual tensile stress on the material exceeds the tensile limit of the material at the cracking position during the stretching deformation process of the sheet metal stamping process, and the material partially yields and necks down but fails. It is not broken, and there are dark crack defects that cannot be observed with the naked eye. After the metal sheet is stamped and formed, it is necessary to use fast and effective online detection methods to detect hidden dangers in time, eliminate unqualified parts, and improve product qualification rate and quality. Timely detection of dark cracks in parts is also conducive to judging the technical problems of stamping pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
Inventor 张宜生张方张雪琴
Owner 武汉中誉鼎力智能科技有限公司
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