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Nondestructive determination device and method for thermal resistivity of carbon material

A technology of thermal resistance and carbon materials, which is applied to measuring devices, measuring resistance/reactance/impedance, measuring electrical variables, etc., can solve the problems of high detection cost and inaccurate measurement of graphite electrode resistivity, so as to improve accuracy, The effect of improving accuracy

Pending Publication Date: 2022-04-12
SINOSTEEL NEW MATERIAL ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to address the shortcomings of the prior art, to provide a non-destructive measuring device for thermal resistivity of carbon materials, which drives the moving seat to move through the power assembly, and measures the entire graphite electrode in sections through the measuring assembly on the moving seat The length and diameter of the electrode, the calculation of the resistivity of the segmented electrode, and finally the average value is calculated, which solves the technical problem of inaccurate measurement of the graphite electrode resistivity caused by the diameter error of the graphite electrode product and the length error during the actual drilling; through the mobile Measurement and fixed graphite electrodes clamped at both ends to achieve non-destructive testing, which solves the technical problem of high testing costs caused by drilling after drilling in the prior art

Method used

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  • Nondestructive determination device and method for thermal resistivity of carbon material
  • Nondestructive determination device and method for thermal resistivity of carbon material
  • Nondestructive determination device and method for thermal resistivity of carbon material

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Embodiment 1

[0062] Such as figure 1 As shown, a non-destructive measuring device for thermal resistivity of carbon materials, comprising:

[0063] Box 1, such as Figure 8 As shown, the box wall 101 of the box body 1 is provided with a multi-layer heat insulation layer, and the heat insulation layer is made of a high temperature resistant material, thereby improving the thermal insulation performance of the box body 1; the high temperature resistant material includes refractory asbestos, refractory brick , refractory concrete, steel plate, and the four materials are used in combination; the box body 1 is provided with a heating assembly that provides heat;

[0064] power pack 2, such as figure 2 As shown, the power assembly 2 includes a transmission rod 21 that is rotated on the box body 1 and a driving motor 22 that is connected to the transmission rod 21; the driving motor 22 adopts a stepping motor to improve motion accuracy, and the The transmission rod 21 is preferably a leading ...

Embodiment 2

[0087] The method for measuring the resistivity of a graphite electrode 100 using a non-destructive measuring device for thermal resistivity of a carbon material described in the technical solution of the above embodiment one is as follows, comprising the following steps:

[0088] Step 1, the installation of graphite electrode 100, such as Figure 9 As shown, the entire graphite electrode 100 is passed through the box body 1 and clamped and fixed by the clamping assembly 7, the measuring assembly 6 is adjusted so that the positioning clamping part 612 of the fixed measuring head 61 clamps one end of the graphite electrode 100, and the measuring unit 62 is moved The distance from the positioning and clamping part 612 meets the technological requirements;

[0089] Step 2, vacuumize, turn on the vacuum machine 81, and vacuumize the inside of the cabinet 1 to not more than -0.1Mpa;

[0090] Step 3: Introduce argon gas, open the valve, make argon gas with a purity of not less than...

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Abstract

The invention provides a carbon material thermal-state resistivity nondestructive measurement device, which comprises a box body, a power assembly, a moving seat, a first transmission assembly, a second transmission assembly and a measurement assembly, and is characterized in that the moving seat is driven to move through the power assembly, and the length and the diameter of a whole graphite electrode 100 are measured in a sectional manner through the measurement assembly on the moving seat; and finally, summarizing and calculating an average value, thereby solving the technical problem that the resistivity measurement of the graphite electrode 100 is inaccurate due to the diameter error of the graphite electrode 100 product and the length error during actual drilling. Through movable measurement and two-end clamping type fixation of the graphite electrode 100, nondestructive detection is realized, and the technical problem of high detection cost caused by detection after drilling in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of resistivity measurement of carbon materials, in particular to a device and method for non-destructive measurement of thermal resistivity of carbon materials. Background technique [0002] Carbon materials are widely used in photovoltaics, non-ferrous metal continuous casting, electric sparks, high temperature gas-cooled reactors, chemical industry, metallurgy, machinery, aerospace and other fields due to their excellent properties such as high strength, heat resistance, stable chemical properties and good electrical conductivity. . High-purity graphite heater material is an indispensable thermal field material in the fields of Czochralski single crystal, polycrystalline ingot, optical fiber preparation, etc., and its service temperature is about 1600 °C. [0003] Resistivity is a property that expresses the resistance of a material to an electric current. It is numerically equivalent to the resistivity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02
Inventor 杨辉毛玉珍姬天亮徐建平
Owner SINOSTEEL NEW MATERIAL ZHEJIANG
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