Magnetic powder flaw detection equipment for the Internet of Things

Abstract

The invention discloses magnetic powder flaw detection equipment for the Internet of Things. The magnetic powder flaw detection equipment comprises a flaw detection main body part and a remote controlpart, the flaw detection main body part comprises a magnetization current setting circuit, a magnetization control circuit and a main body end remote communication module; the remote control part comprises a fourth MCU, a control end remote communication module and an input/output module, the fourth MCU is provided with two serial ports, one serial port is connected with the control end remote communication module, and the other serial port is connected with the input/output module. The magnetic powder flaw detection equipment disclosed by the invention realizes remote operation on the flaw detection equipment, and avoids health hazards possibly brought to an operator by manual close-range operation; in addition, the magnetizing current accuracy of the flaw detection equipment is improved, the time for magnetizing current to reach set current is shortened, and the influence of magnetization of the flaw detection equipment on other equipment or damage to workpieces is avoided.

Description

technical field [0001] The invention belongs to the technical field of detection, in particular to the technical field of magnetic particle flaw detection. Background technique [0002] At present, there are many detection methods for cracks and fracture defects in ferromagnetic materials, and the common ones are turbine method, ultrasonic wave and magnetic particle method. Among them, although the turbo method has a faster crack identification speed, its sensitivity is not high. Ultrasonic testing methods are not widely used due to their high cost. [0003] The magnetic particle inspection method is a detection method designed to detect whether there are defects such as cracks, breaks or impurities in the workpiece by using the principle of magnetic field adsorption of magnetic materials. Because the principle of this method is simple and the cost is low, but The accuracy of the results is high, so it has become the earliest non-destructive testing method applied in the i...

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Problems solved by technology

[0006] However, there are still three major problems in the current magnetic particle flaw detection machine. First, the accuracy of the magnetization current of the flaw detection equipment is low, and when the flaw detector magnetizes the workpiece to be tested, the time for the magnetization current to reach the specified current is too long, which will affect other equipment. It will cause damage to the workpiece; second, when performing magnetic particle flaw detection, due to the artificial addition of fluorescent magnetic powder, it will cause chronic health damage to the staff; third, many flaw detectors have errors in flaw detection, and the errors cannot be corrected in a timely manner. It is estimated that the effect of flaw detection will become worse

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