A test method for low temperature toughness

A test method and low-temperature toughness technology, which is applied in the field of low-temperature toughness testing, can solve problems affecting the accuracy of test results and sample temperature differences, and achieve the effects of simple installation, improved temperature stability, and reasonable structure

Active Publication Date: 2022-07-08
EAST INNER MONGOLIA ELECTRIC POWER COMPANY +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance test of materials in a low temperature environment needs to simulate low temperature. Most of the existing methods are to place the impact specimen in a low temperature environment for a certain period of time. When the temperature of the impact specimen reaches the test temperature, the specimen is quickly Take it out from the low-temperature environment and place it on the experimental mechanism for testing. Due to many unstable factors in the manual movement of the sample, such as the moving time and the contact area with the human body, the temperature of different samples will be different, which will affect the accuracy of the test results.

Method used

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  • A test method for low temperature toughness
  • A test method for low temperature toughness
  • A test method for low temperature toughness

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0037] like Figure 1 to Figure 4 As shown, the present invention provides a test method for low temperature toughness, the method comprises the following steps:

[0038] S(1) Make the spline to be tested;

[0039] S (2) set the temperature of the incubator 4 and place the specimen to be tested in the incubator 4 for cooling;

[0040] S (3) Pushing device 1 pushes the specimen to be tested that reaches the test temperature to the impact table of impact assembly 3, and simultaneously the pendulum 7 falls and impacts the specimen to be tested;

[0041] S (4) carry out the test of step (2) and step (3) at different temperatures, and fit the curve of temperature and impact energy to the test result;

[0042] S(5) determines the impact energy and the ductile-brittle...

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Abstract

The present invention provides a method for testing low temperature toughness. The method includes the following steps: (1) making a sample to be tested; (2) setting the temperature of an incubator and placing the sample to be tested in the incubator for cooling; (3) The pushing device pushes the specimen to be tested that reaches the test temperature to the impact table of the impact assembly, while the pendulum falls and impacts the specimen to be tested; (4) Steps (2) and steps are performed at different temperatures (3) Test, fit the test results to the curve of temperature and impact energy; (5) determine the impact energy and ductile-brittle transition temperature of the material to be tested. The invention completes the cooling, pushing and impacting of the sample in a low temperature environment through the coordinated control of the control system, avoids the influence of unstable factors of manual operation on the experimental results, shortens the time between the cooling of the sample and the impact, and increases the the accuracy of the experiment.

Description

technical field [0001] The invention relates to a method for testing material properties, in particular to a method for testing low temperature toughness. Background technique [0002] my country has a vast territory, and some transmission towers are located in areas with low temperature, and low temperature will increase the brittleness of steel, which is customarily called low temperature cold brittleness; low temperature environment also has a great impact on the impact performance of steel, resulting in transmission tower steel brittleness Fracture accidents occur frequently, causing serious harm; the low temperature toughness of transmission tower steel structures has gradually attracted people's attention. [0003] The breaking strength of a material needs to be determined by impact testing. The performance test of the material in the low temperature environment needs to simulate the low temperature. Most of the existing methods are to place the impact sample in the lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/30G01N3/02
CPCG01N3/02G01N3/30G01N2203/0039G01N2203/027G01N2203/0228
Inventor 徐立新高培国罗永志刘洪义杨芳张显峰王旭明黄耀侯继辉王英豪李健辉祖亘一凌利刘万福
Owner EAST INNER MONGOLIA ELECTRIC POWER COMPANY
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