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Special-shaped refractory brick refractoriness under load and compressive creep test method

A technology for special-shaped refractory bricks and load softening, which is applied in the preparation of test samples, investigation phases/state changes, and the use of stable tension/pressure to test the strength of materials, etc. Change test performance and other issues to achieve good economic and social benefits, prolong service life, and ensure production safety

Inactive Publication Date: 2016-11-09
武汉钢铁有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the load softening temperature and pressure creep test performance of special-shaped bricks cannot be measured in the prior art, and provide a load softening temperature and pressure creep test method for special-shaped refractory bricks

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  • Special-shaped refractory brick refractoriness under load and compressive creep test method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] as attached figure 1 , 2 As shown, take the 19-hole checker brick for hot blast stove as an example.

[0024] (1) figure 1 It is a schematic plan view of a 19-hole checker brick. According to the size of the brick type, prepare a sample that is close to the size specified in the national standard or the metallurgical standard, and keep the original brick surface as much as possible. The two bottom surfaces should be parallel and the surface should be flat.

[0025] Standard sample for load softening temperature test, the metallurgical standard stipulates a cylinder with a diameter of 36±0.5mm and a height of 50±0.5mm, and the national standard is a cylinder with a diameter of 50±0.5mm, a height of 50±0.5mm, and a central through hole diameter of 12 to 13mm of cylinders. According to the actual size of the checker brick, select the national standard as a ref...

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Abstract

The invention provides a special-shaped refractory brick refractoriness under load and compressive creep test method. The special-shaped refractory brick refractoriness under load and compressive creep test method comprises the following steps that firstly, according to brick shapes and sizes of special-shaped refractory bricks, samples with sizes approaching to given sizes and similar shapes in a national standard or a smelting standard are prepared; secondly, the actual stress area of the samples is calculated through a seal method; thirdly, loads are exerted on the samples, and the loads are regulated according to the proportion relation between the standard stress area of the samples and the actual stress area of the samples to enable pressure stress acting on the samples to reach standard required demands; fourthly, refractoriness under load or compressive creep tests are carried out according to normal program steps, and test results are recorded. The sample sizes and test parameters can be regulated according to the shapes and the sizes of the special-shaped bricks, the two important high-temperature performance indexes of creep rate and refractoriness under load of lattice bricks can be accurately detected, and the test results can truly and accurately reflect the actual using performance of the lattice bricks.

Description

technical field [0001] The invention relates to an experimental method for refractory materials, in particular to an experimental method for detecting the load softening temperature and pressure creep performance of special-shaped refractory bricks. Background technique [0002] Refractory materials are widely used in metallurgy, glass, cement, chemical industry, petroleum and other industries, and are the basic materials to ensure high-temperature industrial production. When testing the performance of refractory materials, we often face special-shaped refractory materials such as air-permeable bricks and lattice bricks. At present, there are few relevant national standards for the inspection methods of special-shaped bricks, and basically refer to the test methods of standard bricks and ordinary bricks. Or negotiated by the relevant parties. [0003] For the load softening temperature and pressure creep test, these two are important indicators to measure the performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N3/18G01N25/04
CPCG01N1/28G01N3/18G01N25/04
Inventor 刘黎徐国涛张洪雷周旺枝
Owner 武汉钢铁有限公司
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