High and low temperature testing apparatus for mechanical test

A high and low temperature test and mechanical test technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems that it is difficult to reach ultra-low temperature, difficult to control temperature, and unable to meet the increasing test temperature.

Inactive Publication Date: 2015-01-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many researchers have developed a variety of high-temperature or low-temperature test chambers, which can realize high-temperature or low-temperature environments alone. Among them, the realization of low-temperature environments mostly uses compressor refrigeration. Due to the limitation of factors, it is difficult

Method used

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  • High and low temperature testing apparatus for mechanical test
  • High and low temperature testing apparatus for mechanical test

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Mechanical test at ultra-low temperature

[0023] The present invention is used together with the mechanical testing machine, first clamp the high and low temperature resistant fixture with the mechanical testing machine, open the box door 11, remove the upper and lower movable insulation inserts 13, and move the upper and lower ends of the high and low temperature resistant fixture into the movable In the gap of the heat preservation insert 13, clamp the sample with a high and low temperature resistant clamp. Insert movable insert 13 then, fill up specific sand wool in the gap, close box door 11. Turn on the electrical control system, and at the same time turn on the refrigeration control system 5, input liquid nitrogen into the box through the liquid nitrogen connection pipe 8, the liquid nitrogen evaporates and cools down, and then starts to cool down, and turns on the circulation fan 9 to keep the temperature in the box uniform and stable, and through ...

Embodiment 2

[0024] Embodiment 2: mechanical test under high temperature

[0025] Use the present invention in combination with a mechanical testing machine, first clamp the high and low temperature resistant fixture with the mechanical testing machine, open the box door 11, remove the up and down movable insulation insert 13, and move the upper and lower ends of the high and low temperature resistant fixture into the movable In the gap of the heat preservation insert 13, clamp the sample with a high and low temperature resistant clamp. Insert movable plug-in block 13 then, fill up specific aluminum silicate fiber felt in the gap, close box door 11. Turn on the power control system, and turn on the heating control system 4 at the same time, and heat up through the heating resistance wire 7, that is, start to heat up, turn on the circulation fan 9 through the electrical control system to keep the temperature in the box uniform and stable, and transmit the real-time temperature inside the bo...

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Abstract

The invention relates to a high and low temperature testing apparatus for a mechanical test. The high and low temperature testing apparatus comprises an electric control system, a high and low temperature environment test box, a heating control system and a refrigeration control system. The electric control system is used for controlling the heating control system and the refrigeration control system, so as to enable the temperature in the box to be continuously and controllably changed; the high and low temperature environment test box comprises a stainless steel box body, a box door, a circulating fan, a thermocouple, a heating resistor, a liquid nitrogen access pipe, a thermal-insulating inserting block, a lighting facility, an inspection window and a dismountable defrosting device. The high and low temperature testing apparatus for the mechanical test disclosed by the invention can be combined with a mechanical tester to be used, so as to achieve a mechanical property test of the material at extreme temperature and realize accuracy control of the temperature; meanwhile, the high and low temperature testing apparatus is provided with the heating control system and the refrigeration control system; the apparatus can implement the high-temperature testing environment and the low-temperature testing environment and is convenient to test the influence of the temperature variation on the material mechanical properties; the high and low temperature testing apparatus is further provided with the inspection window, the defrosting device and the lighting facility, so as to observe the destruction process of the specimen during the high and low temperature testing processes.

Description

technical field [0001] The invention relates to a high and low temperature test device for mechanical tests, in particular to a high and low temperature test device for testing mechanical properties across large temperature differences. Background technique [0002] In order to understand the characteristics of some materials in extreme environments, it is often necessary to test their mechanical properties in high or low temperature environments, and sometimes it is necessary to study the mechanical properties of materials in the continuous temperature range from ultra-low temperature to high temperature. At present, many researchers have developed a variety of high-temperature or low-temperature test chambers, which can realize high-temperature or low-temperature environments alone. Among them, the realization of low-temperature environments mostly uses compressor refrigeration. Due to the limitation of factors, it is difficult to achieve ultra-low temperature, and the low...

Claims

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Application Information

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IPC IPC(8): G01N3/18
Inventor 武湛君刘新王智严佳许乔奇
Owner DALIAN UNIV OF TECH
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