Research and development of Co-based amorphous-wire steel-plate crack detector

A technology for crack detection and amorphous wire, which is applied in the direction of material magnetic variables, etc., can solve the problems that cannot meet the needs of actual production, the detection equipment is huge, and cannot be carried around, so that the detection process is convenient and flexible, and the accuracy and sensitivity are improved. Portable effect

Pending Publication Date: 2017-05-31
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

The above method has the disadvantages of large detection equipment, insensitive response, and cannot be carried around, and cannot meet the needs of actual production. Therefore, there is an urgent need for a device that can detect cracks on the surface of steel plates with high precision.

Method used

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  • Research and development of Co-based amorphous-wire steel-plate crack detector
  • Research and development of Co-based amorphous-wire steel-plate crack detector
  • Research and development of Co-based amorphous-wire steel-plate crack detector

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Embodiment Construction

[0026] In order to make the objects and advantages of the present invention clearer, it will be described in detail below in conjunction with the accompanying drawings and specific implementation examples. The following examples are only used to allow others to better understand the present invention, and are not intended to limit the present invention.

[0027] The overall structure of the steel plate crack detector is as follows: figure 1 shown. Including electromagnet (1), Co-based amorphous wire (2), double winding coil (3), main control circuit board (4), multivibrator circuit (5), signal amplification circuit (6), signal processing circuit (7 ), a touch display interface (8), a touch display (9), a power supply circuit (10), and a 12V lithium battery (11).

[0028] The composition of the electromagnet (1) in this tester: 3 layers of coils are wound on the iron core, and each layer contains 300 pieces of enamelled copper wire with a diameter of 0.15mm to form an electro...

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Abstract

The invention relates to a device for detection of cracks in a steel plate, specifically to a device for measuring leakage magnetic field of cracks in the surface of a steel plate on the basis of a new material Co-based amorphous-wire probe to realize crack detection. The device comprises an electromagnet (1), a Co-based amorphous wire (2), a duplex winding coil (3), a master control circuit board (4), a multivibrator circuit (5), a signal amplification circuit (6), a signal processing circuit (7), a touch display screen interface (8), a touch display screen (9), a power circuit (10) and a 12V lithium battery (11). The magnetic flux leakage testing probe is composed of the Co-based amorphous wire (2) and the duplex winding coil (3) connected to a differential structure. By the giant magneto-impedance effect of the amorphous wire, the novel probe can detect the leakage magnetic field formed by micro-cracks. In addition, a detection signal is processed by a STM32 processor, and finally crack depth is displayed on an LCD screen. The device can raise accuracy and sensitivity of detection of cracks in a steel plate and is especially suitable for detection of micro-cracks.

Description

technical field [0001] The invention relates to a crack detection device for a steel plate, in particular to a device for measuring the crack leakage field on the surface of a steel plate based on a new material Co-based amorphous wire probe, thereby realizing crack detection. Background technique [0002] With the continuous development of my country's industrialization process, the annual output of steel plates is also increasing dramatically. However, due to the aging of production equipment and other reasons, cracks often exist on the surface of the produced steel plate, which has a great negative impact on the quality of the steel plate. [0003] At present, the methods for detecting cracks on the surface of steel plates mainly include ultrasonic flaw detection, radiographic flaw detection, eddy current flaw detection, penetrant flaw detection and other technologies. The above method has the disadvantages of large detection equipment, insensitive response, and cannot b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/83
Inventor 孙亚娟刘鹏沈沛沛赵健锜高贵张树玲
Owner TIANJIN POLYTECHNIC UNIV
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