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Sample treatment method for preventing adhesion between sample and pressure head in thermal simulated test machine compression test

A technology of compression test and processing method, which is applied in the field of thermal/mechanical simulation physical experiments, can solve problems such as the adhesion between the sample and the indenter, and achieve the effects of preventing adhesion, reducing test costs, and easy operation

Inactive Publication Date: 2014-02-26
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the sample and the indenter stick together under high temperature conditions, and provide a method for preventing the sample from sticking to the indenter in the cylinder unidirectional compression test on a thermal simulation testing machine. The sample processing method is simple to operate, which greatly improves the test success rate and reduces the test cost

Method used

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  • Sample treatment method for preventing adhesion between sample and pressure head in thermal simulated test machine compression test

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Embodiment 1

[0021] The thermal simulation testing machine model that the present invention adopts is Gleeble1500D. The cylinder unidirectional compression test is carried out on the thermal simulation testing machine. The size of the sample 1 is Φ10×15mm. The thermocouple wire 7 is welded on the sample according to the test requirements. The exposed part of the welding end of the thermocouple wire 7 is 10mm, and the diameter is selected as 0.5 mm, long 10mm ceramic casing 6, completely cover the exposed part of thermocouple wire 7; get 2 grams of aluminum silicate, 12 grams of sodium silicate, 5 grams of silicon dioxide, 1 gram of mica powder and mix and grind until the particle size is less than 45 μm, add 20 grams of water, stir evenly to make high-temperature resistant cement slurry 5, take high-temperature resistant cement slurry 5 and apply it on the welding point of thermocouple wire 7, heat sample 1 to 120 ° C for 2 minutes; select heat-resistant temperature THRED GARD brand pure n...

Embodiment 2

[0024] The thermal simulation testing machine model that the present invention adopts is Gleeble1500D. The cylinder unidirectional compression test is carried out on the thermal simulation testing machine. The size of the sample 1 is Φ8×12mm. The thermocouple wire 7 is welded on the sample according to the test requirements. The exposed part of the welding end of the thermocouple wire 7 is 8mm, and the diameter is 0.5 mm. mm, long 8mm ceramic casing 6, completely cover the exposed part of thermocouple wire 7; get 2.4 grams of aluminum silicate, 11 grams of sodium silicate, 4 grams of silicon dioxide, 2.6 grams of mica powder and mix and grind until the particle size is less than 45 μm, add 20 grams of water, stir evenly to make high-temperature resistant cement slurry 5, take high-temperature resistant cement slurry 5 and apply it on the welding point of thermocouple wire 7, heat sample 1 to 120 ° C for 2 minutes; select heat-resistant temperature AiBOND brand 76701 series pur...

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Abstract

The invention relates to a sample treatment method for preventing adhesion between a sample and a pressure head in a thermal simulated test machine compression test and in particular relates to a sample treatment method for preventing adhesion between the sample and the pressure head in the process of performing a cylinder uniaxial compression test on a thermal simulated test machine, belonging to the field of thermal / mechanical simulated physical experiments. The sample treatment method comprises the following steps: sheathing a ceramic tube on the root of a welded thermocouple wire on the sample; daubing high-temperature-resistant cement paste at a weld point of the thermocouple wire and the sample, and keeping the temperature at the temperature of 120 DEG C for 1-3 minutes; daubing a pure nickel-based high-temperature-resistant anti-lock agent on two end faces of the sample; adhering niobium sheets on the pure nickel-based high-temperature-resistant anti-lock agent; and adhering graphite paper on the niobium sheets. Because the sample and the weld point are treated, the adhesion between the sample and the pressure head is avoided, the condition that the sample and the pressure head are frequently adhered under high temperature conditions in the original test is changed, the test success rate is improved, the test cost is reduced, the utilization rate of expensive pressure heads is increased, and the operation is simple and feasible.

Description

technical field [0001] The invention relates to a sample processing method for preventing the sample from sticking to the indenter in the compression test of a thermal simulation testing machine, in particular to a sample for preventing the sample from sticking to the indenter in the one-way compression test of a cylinder on a thermal simulation testing machine The processing method belongs to the field of heat / force simulation physics experiment. Background technique [0002] Gleeble1500D thermal simulation testing machine is a resistance heating full simulation device that can precisely control temperature, stress and strain parameters at the same time. Able to perform cylinder unidirectional compression test satisfactorily, use small test pieces to reproduce the physical process of materials being heated and stressed simultaneously during thermal processing, fully and accurately reveal the law of changes in the structure and properties of materials during thermal processi...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 罗龙张利文定巍范秀风陈义胜
Owner INNER MONGOLIA UNIV OF SCI & TECH