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A Rapid Measuring Method for Lamination Coefficient of Iron-based Amorphous Strip

A lamination factor, iron-based amorphous technology, applied in the direction of measuring devices, analytical materials, material inspection products, etc., can solve the problems of low accuracy, large error, small application range of the ring method, etc., to improve the measurement speed. , the effect of eliminating errors and reducing the impact

Active Publication Date: 2022-05-17
GUANGZHOU METRO DESIGN & RES INST
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Problems solved by technology

[0005] The purpose of the present invention is to provide a fast measurement method for the lamination coefficient of iron-based amorphous strips to solve the problem of long measurement time and large error of the plane pressure method in view of the shortcomings of the plane pressure method and the coil ring method in the prior art. , low accuracy and small application range of ring rolling method, etc., the measurement method of the present invention has high measurement accuracy and fast speed, and improves the measurement speed of the lamination coefficient of the existing amorphous strip. In order to achieve the above purpose, this The invention is realized through the following technical solutions:

Method used

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  • A Rapid Measuring Method for Lamination Coefficient of Iron-based Amorphous Strip

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Embodiment 1

[0049] Use the above measurement method to measure the lamination coefficient of the laminated iron core in a certain transformer. First, select a continuous iron-based amorphous strip with a width of 142mm and a length of 3140mm from the laminated iron core in the transformer. Cut it into 10 single-layer samples with the same length to form a single-layer sample group; the length and width of the prepared single-layer samples have a tolerance range, and they can be divided equally; choose one piece from the 10 pieces The cut iron-based amorphous strip is used as a sample, and the average thickness of the single-layer sample is 25.80 μm by scanning with a double-headed laser coaxial displacement meter; The width value of the sample is 142.24mm, and the length value is 299.80mm; the weight value of the single-layer sample measured by a precision electronic balance is 7.0459g; the material density is 7.20g / cm 3 ; According to the obtained average thickness, width value, length v...

Embodiment 2

[0053] If in the actual measurement scene, in order to further reduce the error and improve the accuracy, the measurement method of Embodiment 1 can be carried out twice or even multiple times, that is, to obtain two or more lamination coefficients, and then average the obtained lamination coefficients value to obtain an average value of the lamination coefficient, thereby further improving the accuracy of this measurement method.

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Abstract

The invention provides a method for quickly measuring the lamination coefficient of an iron-based amorphous strip, which comprises the following steps: preparing a single-layer sample group; randomly extracting a single-layer sample from the single-layer sample group; using a fixed double-head The average thickness of the single-layer sample is obtained by scanning with the laser coaxial displacement meter; the width value and length value of the single-layer sample are obtained by scanning measurement with the CCD size vision system; the weight value of the single-layer sample is measured by using a precision electronic balance; According to the obtained average thickness, width, length and weight of the single-layer sample, the lamination coefficient of the iron-based amorphous strip is calculated; the measurement method of the present invention has high accuracy and fast speed, and improves the existing non-crystalline The measurement speed of the lamination coefficient of the crystal strip reduces the influence of errors on the measurement results, thereby improving the accuracy of the lamination coefficient measurement.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a method for rapidly measuring the lamination coefficient of an iron-based amorphous strip. Background technique [0002] Iron-based amorphous alloy or metallic glass is a new technology that came out in the 1970s. It uses quenching technology to form molten steel into thin strips with a thickness of about 25-30 microns at one time. The atoms of the iron-based amorphous strip are in an amorphous structure with random arrangement, which makes it have a narrow B-H loop, high magnetic permeability and low loss; at the same time, the irregular arrangement of amorphous alloy atoms restricts the free passage of electrons As a result, the resistivity is 2 to 3 times higher than that of crystal alloys, which is also conducive to reducing eddy current losses. Because of its high saturation magnetic induction, high magnetic permeability, low loss, and low coercivity, iron-based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/00G01N33/0077
Inventor 林珊翟利华刘健美陈吉刚侯峰高杰孙菁张羽彭伟饶美婉周丹刘从胜苏华罗旭王洪杰阮艳妹卢晓智邹晓文吴淑娟
Owner GUANGZHOU METRO DESIGN & RES INST
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