A material test method and system for realizing gas corrosion and creep under high temperature

A gas corrosion and material testing technology, applied in the direction of weather resistance/light resistance/corrosion resistance, analyzing materials, using stable tension/pressure to test the strength of materials, etc. Assessing issues such as remaining life

Inactive Publication Date: 2016-04-20
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

At present, the existing research methods in this field only consider the influence of a single factor of gas corrosion or creep on the properties of materials at high temperatures, so they cannot truly reflect the evolution of high-temperature properties of materials, and thus cannot correctly evaluate their remaining life.

Method used

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  • A material test method and system for realizing gas corrosion and creep under high temperature
  • A material test method and system for realizing gas corrosion and creep under high temperature
  • A material test method and system for realizing gas corrosion and creep under high temperature

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Embodiment Construction

[0023] The present invention provides a material test method and system for realizing gas corrosion and creep under high temperature. The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The system of the present invention is composed of a high temperature creep system and a corrosive gas circulation system, such as figure 1 As shown, the specific structure of the heating furnace part in the high temperature creep system is as follows figure 2 shown.

[0025] The structure of the high-temperature creep system is as follows: the heating furnace 2 of the creep machine is fixed on the column 11 of the creep machine, the heating furnace 2 is a hollow tube furnace, the sample 4 is connected with the upper rod 1 and the lower rod 6 through threads and Placed in the heating furnace 2; the upper rod 1 and the lower rod 6 are partially hollow structures, and quartz tubes 18 are respectively a...

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Abstract

The invention belongs to the technical field of high-temperature gas corrosion and creep tests and particularly relates to a material test method and system for high-temperature gas corrosion and creep. A high-temperature corrosive gas circulation channel is formed in a sample, holes are formed in upper and lower pull rods of a creep machine, and the sample is connected with the upper and lower pull rods of the creep machine to form a gas channel, so that corrosive gas can circulate in the gas channel through external equipment; the sample is externally heated and an axial load applied to the sample to achieve high-temperature creep; and the corrosive gas circulates in a circulation loop. The method can be used for evaluating the influence of the combined effect of the high-temperature gas corrosion and the high-temperature creep on the material performance, studying the influence of the gas corrosion on the creep performance and the influence of the creep action on the gas corrosion, really and effectively reflecting the high-temperature mechanical performance evolution law of a material during the service period, and providing a theoretical basis for guaranteeing safe and reliable running of equipment.

Description

technical field [0001] The invention belongs to the technical field of high-temperature gas corrosion and creep experiments of materials, and in particular relates to a material test method and system for realizing gas corrosion and creep at high temperatures. Background technique [0002] In ultra-supercritical units, it is necessary to increase steam parameters, such as pressure and temperature, to improve efficiency and achieve energy-saving and emission-reduction goals. Under actual working conditions, the boiler pipe material of an ultra-supercritical unit is prone to creep when the temperature is as high as 600 °C, and the pipe will be affected by high-temperature corrosion in a high-temperature corrosive gas environment. At present, the existing research methods in this field only consider the influence of a single factor of gas corrosion or creep on the properties of materials at high temperatures, so they cannot truly reflect the evolution of high-temperature proper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18G01N17/00
Inventor 毛雪平于洋王晓张乃强倪永中徐鸿
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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