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An ultrasonic b+c+d+s scanning identification method for internal defects of steel ingots

A scanning method and a technology for internal defects, applied in the direction of analyzing solids using sound waves/ultrasonic waves/infrasonic waves, can solve the problems of insufficient imagery and intuition, and achieve the effects of eliminating universal forging process cards, accurate description of map features, and comprehensive detection results

Active Publication Date: 2017-12-29
NANJING DEV ADVANCED MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a simple and convenient ultrasonic B+C+D+S scanning identification method for internal defects of steel ingots in view of the shortcomings of the existing technology that the ultrasonic scanning is not enough to judge steel ingot defects.

Method used

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  • An ultrasonic b+c+d+s scanning identification method for internal defects of steel ingots
  • An ultrasonic b+c+d+s scanning identification method for internal defects of steel ingots
  • An ultrasonic b+c+d+s scanning identification method for internal defects of steel ingots

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Example 1 The continuous casting ingot is detected. In the ultrasonic B+C+D+S scanning atlas, the B-scan image is a non-central intermittent strip, the C-scan image is a central intermittent strip, and the D The scan image is a non-central spot; the S-scan image is a non-central spot. Defects are single point defects. see figure 2 shown.

Embodiment 2

[0045] Example 2 The molded ingot is detected. In the ultrasonic B+C+D+S scanning atlas, the B-scan image is a non-central intermittent strip, the C-scan image is a central intermittent strip, and the D The scan image is a non-central spot; the S-scan image is a non-central spot. Defects are single point defects. see image 3 shown.

Embodiment 3

[0046] Example 3 The electroslag remelting ingot is detected. In the ultrasonic B+C+D+S scanning atlas, the B-scan image is a non-central intermittent strip, and the C-scan image is a central intermittent strip. , the D-scan image is a non-central spot; the S-scan image is a non-central spot. Defects are single point defects. see Figure 4 shown.

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Abstract

The invention discloses an ultrasonic B+C+D+S scanning identification method for internal defects of a steel ingot. The steel ingot is scanned by an ultrasonic B-scanning method, a C-scanning method, a D-scanning method and an S-scanning method to obtain ultrasonic B+C+D +S scans the defect map, which has strong operability, more accurate map feature description, comprehensive, intuitive and reliable detection results, and clear defect contour feature classification, which provides an intuitive judgment for the final judgment of the quantitative, qualitative and positioning of defects in accordance with. The ultrasonic B+C+D+S scanning function can be used to obtain the projected feature maps of the ultrasonic defects of the steel ingot in various directions on the Cartesian three-dimensional coordinates, and then obtain more intuitive position and shape characteristics of the defects. This provides an accurate and intuitive prediction basis for the quality assessment of steel ingots, the design of forging process cards and the evaluation of mechanical properties of products, and also provides effective quality assurance for the subsequent forging process, how to eliminate universal forging process cards.

Description

technical field [0001] The invention relates to the field of ultrasonic A scanning, in particular to an ultrasonic B+C+D+S scanning identification method for internal defects of steel ingots. Background technique [0002] In recent years, with the development of metallurgy, petrochemical, aerospace, shipbuilding and other industries, the demand for forgings has been increasing, so the quality requirements and quantity requirements for steel ingots have also increased accordingly. Since the quality of the steel ingot directly affects the subsequent processing and even the quality of the finished product, it is very important to inspect the surface and internal quality of the steel ingot. Usually, chemical composition inspection, surface quality inspection, ultrasonic flaw detection, magnetic particle flaw detection and low-magnification inspection are carried out on steel ingots to ensure the internal quality of steel ingots. [0003] Ultrasonic non-destructive testing techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/06
Inventor 张利陈昌华
Owner NANJING DEV ADVANCED MFG
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