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Convexity measuring device using X-ray

An X-ray and measuring instrument technology, applied in the field of X-ray convexity measuring instruments with three sources and nine detectors, can solve the problems of not being, affecting the accuracy of thickness measurement, and measuring signals not being able to be used for feedback in real time.

Inactive Publication Date: 2008-10-15
CHINA NON-FERROUS METALS PROCESSING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the scanning movement of the C-shaped frame is carried out simultaneously with the rolling movement of the strip, the actual measurement track is a slanted line on the strip, and the measurement is not a true cross-section
At the same time, due to the limited scanning speed, the measurement signal cannot be used for real-time feedback; in addition, the vibration of the thickness gauge when moving will affect the thickness measurement accuracy

Method used

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  • Convexity measuring device using X-ray
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  • Convexity measuring device using X-ray

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Experimental program
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Effect test

Embodiment Construction

[0018] figure 1 As shown, the system configuration of the convexity measuring instrument mainly includes: X-ray source part, X-ray detector part, electrical control part, internal calibration box, mechanical part, convexity detection signal processing unit, man-machine interface part, cooling system .

[0019] The principle of radiometric thickness measurement is to measure the thickness of the strip by using the attenuation of rays in the metal (or the absorption of radiation by the material) characteristics. The X-ray or isotope radiation emitted by the radiation source penetrates the measured strip, and the radiation energy is partially absorbed. The X-ray detector located on the other side of the strip measures the radiation intensity, and follows the following formula: I m = I 0 e -μh , h=1 / μ·ln(I 0 / I m ), where I 0 - ray intensity before absorption, I m - ray intensity after absorption, μ - material absorption coefficient, h - strip thickness. The X-ray detector...

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Abstract

The invention relates to an X-ray convex tester, wherein three X-ray sources are mounted on the upper arm of C-shape support; the bottom of C-shape support is mounted with nine X-ray detectors, which are symmetry arranged; each X-ray source is relative to three detectors; the C-shape support translates into or out the rolling line; the central line tester aims the width center of tested band, to test the central thickness, and the thickness distribution, then transmit the thickness information to the thickness automatic controller and convex automatic control system; the nine testing signals are processed by computer and output to the convex automatic control system. The invention can avoid using thickness tester, to real-time test the convex distribution, to improve the sheet shape accuracy.

Description

technical field [0001] The invention relates to a device for on-line and real-time measurement of the crown of a metal plate and strip during hot rolling, in particular to an X-ray crown measuring instrument with three sources and nine detectors, which belongs to the technical field of metal rolling processing. Background technique [0002] In the hot rolling process of metal strips, in order to obtain high-precision strip cross-sectional thickness distribution information in real time, an on-line measurement device for strip crown is used to provide high-precision cross-sectional thickness measurement values ​​to the flatness automatic control system . [0003] At present, the on-line measurement device for plate and strip crown is a double C-frame mobile scanning crown meter, which consists of a centerline thickness gauge and a scanning thickness gauge. composition. The measuring point of the centerline thickness gauge is fixed and aligned at the center position in the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B38/02B21B38/04G01B15/04G01B15/02
Inventor 杨双成李献国邹凯
Owner CHINA NON-FERROUS METALS PROCESSING TECH CO LTD