Method and system device for detecting gap between ferromagnetic metal plate and non-ferromagnetic metal plate

Abstract

The invention discloses a method and a device for detecting a gap between a ferromagnetic metal plate and a non-ferromagnetic metal plate. The detection device (3) comprises a detection probe (31), ashielding shell cover (32) and a control circuit board device (33), wherein the detection probe (31) is installed in the shielding shell cover (32), and the control circuit board device (33) is fixedto the inner side wall of the shielding shell cover (32) and electrically connected with the detection probe (31) through a guide wire. According to the invention, the gap between the ferromagnetic plate and the non-ferromagnetic plate can be simply and conveniently detected and monitored, and the gap value can be conveniently measured.

Description

technical field [0001] The invention relates to the technical field of electromagnetic non-destructive testing, in particular to the non-destructive testing of gaps between metal plates, in particular to a detection method and a system device for gaps between ferromagnetic and non-ferromagnetic metal plates. Background technique [0002] In nuclear industry and other fields, it is often necessary to stack two different metal materials together, such as the stacking of steel plate and aluminum plate or copper plate. Since the plate is relatively thin and has a certain flexibility stress, it is easy to cause deformation when placed. Completely fit, it is not easy to detect with the naked eye, and with the automation of industrial production, the production line operations are automatically completed by machinery, so it is very necessary to monitor the gap between the metal sheets through automatic detection. [0003] However, it is necessary to use non-destructive testing meth...

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Problems solved by technology

[0002] In nuclear industry and other fields, it is often necessary to stack two different metal materials together, such as the stacking of steel plate and aluminum plate or copper plate. Since the plate is relatively thin and has a certain flexibility stress, it is easy to cause deformation when placed. Complete fit, it is not easy to be found by human eyes, and with the automation of industrial production, the production line operations are automatically completed by machinery, so it is very necessary to monitor the gap between metal sheets through automatic detection

[0003] However, it is necessary to use non-destructive testing methods to judge whether there is a gap between the two, especially through the detection of the steel surface, which is very difficult, and there is no good solution so far

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