Graphite thermal expansion coefficient testing method capable of improving testing precision

A technology of thermal expansion coefficient and test method, applied in the direction of material thermal expansion coefficient, chemical instruments and methods, cleaning methods and utensils, etc., can solve problems such as the influence of unresolved test results, and achieve the effect of avoiding adverse effects and uneven heating

Active Publication Date: 2022-04-01
SINOSTEEL NEW MATERIAL ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the test method disclosed in the above-mentioned patent does not solve the technical problem of considering the influence of the expansion of the furnace body and brackets on the test results.

Method used

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  • Graphite thermal expansion coefficient testing method capable of improving testing precision
  • Graphite thermal expansion coefficient testing method capable of improving testing precision
  • Graphite thermal expansion coefficient testing method capable of improving testing precision

Examples

Experimental program
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Effect test

Embodiment 1

[0072] Such as figure 1 Shown, a kind of graphite thermal expansion coefficient test method that improves test precision, comprises the following steps:

[0073] Step 1, place the standard sample, place the standard sample of known expansion coefficient in the test groove 414 of the sample bracket 413 in the measuring mechanism 4 of the tester;

[0074] Step 2, the furnace cavity is in place, and the resistance furnace 2 facing the sample-testing bracket 413 is driven by the sliding mechanism 3 installed at the bottom to move toward the sample-testing bracket 413, so that the sample-testing bracket 413 extends into the The inside of the furnace chamber 21 of the resistance furnace 2;

[0075] Step 3, pretreatment, after the sample bracket 413 is inserted into the inside of the furnace chamber 21 of the resistance furnace 2, the vacuuming process is carried out through the vacuum pumping hole 212 on the furnace chamber 21, and then through the vacuum pumping hole 212 on the fu...

Embodiment 2

[0092] Such as Figure 2 to Figure 15 As shown, a high-efficiency graphite thermal expansion tester includes a horizontal box 1, and also includes:

[0093] A resistance furnace 2, the resistance furnace 2 is slidably arranged on the horizontal box body 1 through a sliding mechanism 3, a number of furnace chambers 21 are arranged on the resistance furnace 2 in the axial direction, and the furnace chambers 21 are arranged in a circular equidistant manner On the resistance furnace 2, the resistance furnace 2 and the sliding mechanism 3 are relatively rotatable; and

[0094] Measuring mechanism 4, said measuring mechanism 4 is installed on said horizontal box body 1 facing said resistance furnace 2, said measuring mechanism 4 includes measuring assembly 41, said measuring assembly 41 includes transmission rod 411, length sensor 412 and The sample bracket 413, the transmission rod 411 is installed on the machine head 11 at the end of one side of the horizontal box body 1, and the...

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Abstract

The invention relates to the technical field of graphite workpiece expansion coefficient testing, in particular to a graphite thermal expansion coefficient testing method capable of improving testing precision, which comprises the following steps: placing a standard sample, placing a furnace chamber in place, pretreating, testing the standard sample, switching the furnace chamber and testing the sample. Comparing the obtained test result with the known real thermal expansion value of the standard sample to obtain the error value of the tester, then carrying out thermal expansion test on the graphite rod to be tested, and calibrating the obtained test result and the error value to obtain a more accurate test value of the graphite thermal expansion test. The technical problem that the test result is affected by expansion of the furnace body, the support and the like is solved.

Description

technical field [0001] The invention relates to the technical field of testing the coefficient of expansion of graphite workpieces, in particular to a method for testing the coefficient of thermal expansion of graphite with improved testing accuracy. Background technique [0002] Graphite thermal expansion test is to use the thermal expansion coefficient measuring instrument to determine the expansion and contraction performance of gold and graphite in the high temperature state during the heating and roasting process; it consists of five parts: loading sensor device, resistance furnace, trolley, base, and electrical control box After the electric furnace heats up, the sample in the furnace expands, and the test rod on the end of the sample produces an equal amount of expansion. This expansion is accurately measured by the inductive displacement sensor and the instrument, and is displayed by the instrument. [0003] At present, the test of thermal expansion coefficient of gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/16B08B9/08B08B9/087
CPCY02E30/30
Inventor 杨辉毛玉珍徐建平
Owner SINOSTEEL NEW MATERIAL ZHEJIANG
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