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
CN114264690AActive Publication Date: 2022-04-01SINOSTEEL NEW MATERIAL ZHEJIANG
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SINOSTEEL NEW MATERIAL ZHEJIANG
Publication Date
2022-04-01

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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.
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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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