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Rapid Calibration Method of γ-ray Thickness Gauge Sample

A calibration method and thickness gauge technology, which are applied in length measuring devices, metal processing equipment, metal rolling, etc., can solve problems such as the calibration success rate and measurement accuracy have a great influence, and cannot be adapted to the thickness, quality and output of high-grade silicon steel. , to achieve the effect of improving the thickness and quality

Active Publication Date: 2017-04-26
SHANXI TAIGANG STAINLESS STEEL CO LTD
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AI Technical Summary

Problems solved by technology

With the increase of varieties and output of high-grade silicon steel, the silicon content of high-grade silicon steel is relatively high, and small changes in composition have a great impact on the calibration success rate and measurement accuracy. The above-mentioned calibration accuracy and calibration time can no longer adapt to the thickness, quality and output of high-grade silicon steel.

Method used

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Examples

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Effect test

Embodiment Construction

[0020] Taking 50W310 high-grade silicon steel as an example, the sample thickness is 0.5240mm. In order to ensure the thickness accuracy of the finished product, manual and accurate calibration is performed according to the 0.5240mm sample. The middle pass thicknesses are 2.6mm, 1.8mm, 1.0mm, and 0.6mm respectively.

[0021] 1. Manually measure the silicon steel sample with a thickness of 0.5240mm 5 times on the operation interface of the γ-ray thickness gauge, and obtain the measured thickness values ​​of 5 samples, and then divide the sum of the measured thickness values ​​of the 5 samples into 5 = the average measured thickness value ;

[0022] 2. Compare the average measured thickness value of silicon steel with the absolute thickness value of the 0.5240mm sample to obtain the deviation value of the sample thickness (that is, the deviation value of the sample thickness = the average measured thickness value - the absolute thickness value of the sample); the absolute thickn...

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Abstract

A fast sample plate calibration method of a gamma-ray thickness gauge is mainly used for detecting the thickness of silicon steel. The method comprises the steps that 1, physical measurement is carried out on silicon steel sample plates of different thicknesses to obtain the absolute thickness values of the sample plates of all the thicknesses; 2, the silicon steel sample plates of the different thicknesses are manually measured on the gamma-ray thickness gauge one to five times, and the average manual measurement thickness value is calculated; 3, the thickness deviation value of the sample plates is calculated; 4, a compensation factor is determined, and meets the conditions that the absolute value of the thickness deviation value of the silicon steel sample plates with the thickness of 0.5 mm is not larger than 3 micrometers, and the absolute value of the thickness deviation value of the silicon steel sample plates of other thicknesses is not larger than 6 micrometers; and 5, the compensation factor is stored and calibrated on the gamma-ray thickness gauge. Calibration time ranges from 45 minutes to 1 hour; the number of times of starting a radiation source is 1 / 5 of original calibration time; calibration precision is higher than calibration of an original procedure; and the thickness quality of finished steel plates is improved.

Description

technical field [0001] The invention belongs to the field of metal detection automation and is mainly used for detecting the thickness of silicon steel. The gamma-ray thickness gauge is a gamma-ray thickness gauge produced by DMC (Ruimei) Company of the United States. Background technique [0002] The Sendzimir rolling mill is a reversible 20-roll cold rolling mill. It takes 5 passes of reciprocating rolling to roll a 2.6mm thick silicon steel raw coil into a 0.5mm finished coil. During the rolling process, the thickness feedback is provided by the American DMC (Ruimei) The γ-ray thickness gauge produced has a C-shaped frame at the entrance and exit, and is equipped with two sets of identical radiation sources and ionization receiving amplifiers. [0003] Due to the reciprocating rolling, the thickness gauge needs to measure steel plates of different steel types and thicknesses. In order to ensure the accuracy of the thickness measurement, it is necessary to calibrate all t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B38/04
Inventor 王绘宇邢一刘勇罗洵罗冉杰
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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