Detection method and system device for the gap between ferromagnetic and non-ferromagnetic metal plates

Abstract

The invention discloses a method and device for detecting the gap between ferromagnetic and non-ferromagnetic metal plates, the detection device (3) comprising a detection probe (31), a shielding shell cover (32), a control circuit board device (33), and detecting The probe (31) is installed in the shielding shell cover (32), and the control circuit board device (33) is fixed on the inner side wall of the shielding shell cover (32), and is electrically connected with the detection probe (31) by the guide wire. It is very easy to realize the detection and monitoring of the gap between the ferromagnetic plate and the non-ferromagnetic plate, and it is convenient to measure the size of the gap value.

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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