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550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device

A metal material, electromagnetic ultrasonic technology, applied in the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, measuring devices, and analysis materials, etc., can solve the problems of few reports, achieve high detection accuracy and real-time performance, high conversion efficiency, The effect of reliable high temperature flaw detection

Active Publication Date: 2016-07-13
CENT SOUTH UNIV
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Problems solved by technology

[0005] At present, there are few patent reports on the high-temperature electromagnetic ultrasonic body wave flaw detection method and its device

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  • 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device
  • 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device
  • 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device

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Embodiment Construction

[0033] The present invention will be further described on the front side in conjunction with the accompanying drawings.

[0034] see figure 1 , figure 2 and image 3 , a device for implementing the electromagnetic ultrasonic body wave flaw detection method for metal materials at a temperature of 550°C, including a high-temperature electromagnetic ultrasonic probe. The structure of the high-temperature electromagnetic ultrasonic probe is: a ceramic coil 1, a copper plate 5 and a high-temperature-resistant permanent magnet 2 pass through a first ceramic adhesive 6 Pouring in the brass shell 3 , the copper plate 5 is between the ceramic coil 1 and the high temperature resistant permanent magnet 2 , and the corundum sheet 4 outside the ceramic coil 1 is provided at the working end of the brass shell 3 .

[0035] Preferably, the direction of the coil wire of the ceramic coil 1 is perpendicular to the direction of the bias magnetic field provided by the high temperature resistant...

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Abstract

The invention discloses a 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device. The structure of a high-temperature electromagnetic ultrasonic probe is that a ceramic coil (1), a copper plate (5) and a high-temperature-resisting permanent magnet (2) are poured into a brass shell (3) through a first ceramic binding agent (6); the copper plate (5) is located between the ceramic coil (1) and the high-temperature-resisting permanent magnet (2); a corundum sheet (4) located on the outer side of the ceramic coil (1) is arranged at a working end of the brass shell (3). Based on a ceramic layer silver wire and a high-temperature-resisting N-AH SmCo permanent magnet, the 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device are suitable for preforming long-time and reliable defect nondestructive detection in a 550-DEG C high-temperature environment, and relatively high energy conversion efficiency still can be kept in the high-temperature environment.

Description

technical field [0001] The invention relates to a method for measuring internal defects of high-temperature metal materials by using an electromagnetic ultrasonic probe, in particular to a method for detecting the position and equivalent size of internal defects of ferromagnetic or non-ferromagnetic metal materials up to 550°C. The invention also relates to a device for carrying out the method. Background technique [0002] Due to the limitation of processing technology, various metal parts inevitably have defects such as shrinkage cavity, shrinkage porosity, inclusions, cracks, and folding during the production process. As a necessary part of product quality control, non-destructive testing technology must be used to remove defective products that exceed the standard in time during the production and processing of metal parts. Use the defect detection results as an important basis for improving the manufacturing process of metal parts, monitor and control defects in real t...

Claims

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Application Information

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IPC IPC(8): G01N29/07G01N29/24
CPCG01N29/07G01N29/2412G01N2291/0234G01N2291/0289
Inventor 吴运新石文泽谭良辰龚海张涛杨键刚韩雷李伟范吉志
Owner CENT SOUTH UNIV
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