Measuring equipment of non-metallic material high-temperature expansive power and method of use thereof

A technology of non-metallic materials and high-temperature expansion, which is applied in the field of non-metallic material performance measurement devices, can solve the problems of slow heating rate, high price, and inoperable equipment, and achieve the effects of high operating temperature, less maintenance, and simple structure

Inactive Publication Date: 2008-05-21
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To measure the expansion force of non-metallic materials at high temperatures, it is necessary to heat the non-metallic materials to the required measurement temperature. Different heating devices use different heating bodies: one is to use the traditional heating body, that is, the heating material is electric furnace wire. The heating element has a slow heating rate and low measurement temperature; the second is to use precious metals as the heating element, such as platinum wire and platinum-rhodium strip, which are expensive, and the test temperature can be increased, but the heating rate is still very slow, and the precious metal heating element is easily damaged. Frequent maintenance is required; the third is to use silicon carbide rods or silicon molybdenum rods as the heating element. Due to

Method used

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  • Measuring equipment of non-metallic material high-temperature expansive power and method of use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A device for measuring the expansion force of non-metallic materials, the device includes a water-cooled high-temperature sealed chamber, a temperature control system, a force-measuring device, a vacuum device and an air source. Its specific structure is shown in Figure 1:

[0023] The structure of the water-cooled high-temperature sealed chamber is: a metal water-cooled base 24 is fixed at the center of the bottom of the water-cooled sealed chamber 3, a plane bearing 21 is concentrically installed on the inner platform of the metal water-cooled base 24, and the raised part of the adjusting nut 25 is concentrically fitted into the plane In the bearing 21, the lower end of the metal water-cooled lower support 19 is threadedly connected with the adjusting nut 25, the sample 8 to be tested for high temperature expansion force is placed on the metal water-cooled lower support 19, and the lower end of the water-cooled pressure head 7 is pressed against the sample to be tested...

Embodiment 2

[0032] A device for measuring expansion force of non-metallic materials and its application method, the device includes a water-cooled high-temperature sealed chamber, a temperature control system, a force measuring device, a vacuum device and an air source. Its specific structure is as shown in Figure 1 and described in Embodiment 1.

[0033] The material of sample 8 to be tested is magnesia carbon brick, and the size is a cylinder of φ50mm×160mm. The gap between the cylinder and the inner wall of graphite ring 26 is 2-4 mm; the gap between graphite ring 26 and induction coil 4 is 2-4 mm. 5mm.

[0034] The method for measuring the high-temperature expansion force of magnesia-carbon bricks is: before heating up, adjust the contact pressure between the upper movable indenter 9, the water-cooled indenter 7 and the sample 8 to be tested, and apply a pre-pressure of 25KN to the magnesia-carbon bricks; The sealed chamber 3 is evacuated and filled with N 2 , heat up to the set 160...

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Abstract

The present invention relates to a determining device of non-metal material high temperature expansibility and a usage method thereof. The device comprises a water-cooling high temperature sealed room, a temperature control system, a force-measuring device, a vacuum device and an air supply. The structure of the water-cooling high temperature sealed room is as follows: a plane bearing 21 is concentrically arranged on the metal water-cooling basal seat 24 which is fixed on the center of the bottom of the water-cooling sealed room 3; an adjusting nut 25 is arranged in the plane bearing 24; a carbon ring and an induction coil 4 are arranged on the outer part of a detect-waiting sample which is placed on a metal water-cooling lower support 19; the induction coil 4 is connected with the output end of an induction furnace. The temperature control system is that the receive end of an infrared radiation thermometer 14 aims at a sample 8; a computer 15 is respectively connected with the infrared radiation thermometer 14 and the induction furnace 1; the mobile pressure head 9 of the force-measuring device is pressed on a water-cooling pressure head 7; the force-measuring sensor 22 is connected with the computer 15. The present invention is of simple structure, small volume, high temperature raising speed, high usage temperature, little maintaining, and can carry out the measurement under various environments.

Description

Technical field: [0001] The invention belongs to a device for measuring properties of non-metallic materials and a method for using the same. In particular, the invention relates to a device for measuring high-temperature expansion force of non-metallic materials and a method for using the same. Background technique: [0002] High temperature expansion force is a mechanical property of non-metallic materials. To measure the expansion force of non-metallic materials at high temperatures, it is necessary to heat the non-metallic materials to the required measurement temperature. Different heating devices use different heating bodies: one is to use the traditional heating body, that is, the heating material is electric furnace wire. The heating element has a slow heating rate and low measurement temperature; the second is to use precious metals as the heating element, such as platinum wire and platinum-rhodium strip, which are expensive, and the test temperature can be increas...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N25/00
Inventor 葛山尹玉成
Owner WUHAN UNIV OF SCI & TECH
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