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High-temperature alloy heat treatment anti-oxidation device and method

A high-temperature alloy, anti-oxidation technology, applied in the direction of heat treatment furnace, heat treatment equipment, process efficiency improvement, etc., can solve the problems of high cost, low cost, easy peeling and so on

Active Publication Date: 2021-04-27
辽宁红银金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used anti-oxidation methods for heat treatment of superalloys are mainly to apply anti-oxidation slurry and vacuum heat treatment furnace. The former is low in cost, but it is easy to peel off during the oxidation process; the latter is more expensive.

Method used

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  • High-temperature alloy heat treatment anti-oxidation device and method
  • High-temperature alloy heat treatment anti-oxidation device and method
  • High-temperature alloy heat treatment anti-oxidation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, a small sample of single crystal nickel-based superalloy DD5 is subjected to an anti-oxidation solution heat treatment, and the process steps and parameters are as follows:

[0043] Place the sample in the center of the stage 11, put the heat treatment anti-oxidation device into the heat treatment furnace, close the furnace door, connect the air inlet pipe 12 to the argon gas cylinder through the furnace wall hole, turn on the switch of the argon gas cylinder, and make the argon gas output end Air pressure at 4kg / cm 2 About 5 minutes after ventilating, heat the heat treatment furnace to the solid solution temperature of 1300°C, and continue feeding argon during this period. After the heat treatment is finished, close the heat treatment furnace, and after it drops to room temperature, close the gas valve, disconnect the gas inlet pipe from the argon bottle, and take out the device and the sample together.

Embodiment 2

[0045] In this embodiment, the sample in the single crystal nickel-based superalloy DD5 is subjected to an anti-oxidation solution heat treatment, and the process steps and parameters are as follows:

[0046] Place the sample in the center of the stage 11, connect the first fixing hole 7 and the second fixing hole 8, penetrate the fixing rod 10 and fix it, put the heat treatment anti-oxidation device into the heat treatment furnace, close the furnace door, and the air inlet pipe 12 passes through Connect the furnace wall hole to the argon cylinder, turn on the switch of the argon cylinder, so that the pressure at the argon output end is 6kg / cm 2 About 5 minutes after ventilating, heat the heat treatment furnace to the solid solution temperature of 1300°C, and continue feeding argon during this period. After the heat treatment is finished, close the heat treatment furnace, and after it drops to room temperature, close the gas valve, disconnect the gas inlet pipe from the argon ...

Embodiment 3

[0048] In this embodiment, a large sample of single crystal nickel-based superalloy DD5 is subjected to an anti-oxidation solution heat treatment, and the process steps and parameters are as follows:

[0049] Place the sample in the center of the stage 11, connect the first fixing hole 7 and the third fixing hole 9, penetrate the fixing rod 10 to fix it, put the heat treatment anti-oxidation device into the heat treatment furnace, close the furnace door, and the air intake pipe 12 passes through Connect the furnace wall hole to the argon cylinder, turn on the switch of the argon cylinder, so that the pressure at the argon output end is 8kg / cm 2 About 5 minutes after ventilating, heat the heat treatment furnace to the solid solution temperature of 1300°C, and continue feeding argon during this period. After the heat treatment is finished, close the heat treatment furnace, and after it drops to room temperature, close the gas valve, disconnect the gas inlet pipe from the argon b...

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Abstract

The invention relates to the technical field of high-temperature alloy heat treatment, and particularly relates to a high-temperature alloy heat treatment anti-oxidation device and method. The device comprises an outer-layer exhaust system, an inner-layer exhaust system, an objective table and an air inlet pipeline, the outer-layer exhaust system is of an annular hollow structure, the inner-layer exhaust system is of an annular hollow structure, the inner-layer exhaust system is matched with the outer-layer exhaust system in an inserted mode, and a cavity of the inner-layer exhaust system is communicated with a cavity of the outer-layer exhaust system; the hollow objective table is arranged at the lower part of the inner side of a first inner ring part of the outer-layer exhaust system, the outer side of the objective table is communicated with the cavity of the outer-layer exhaust system, and the bottom of the objective table is communicated with one end of the air inlet pipeline. Inert gas is continuously blown into a high-temperature alloy sample in the heat treatment process from different angles, contact between the sample and the oxidation environment is reduced, and the high-temperature alloy is prevented from being oxidized in the high-temperature heat treatment process. The device and the method can be used for oxidation protection of the high-temperature alloy and other materials during high-temperature heat treatment in the atmospheric environment.

Description

technical field [0001] The invention relates to the technical field of heat treatment of superalloys, in particular to an anti-oxidation device and method for heat treatment of high temperature alloys. Background technique [0002] Superalloys are currently widely used in the manufacture of high-temperature resistant materials such as aero-engines and gas turbines. Superalloys usually require heat treatment to improve their performance. Commonly used heat treatment steps for superalloys include solid solution and aging. Solid solution is usually carried out at a higher temperature, for example: the solid solution temperature of DD5 single crystal nickel-based superalloy is as high as 1300°C, the purpose is to dissolve the strengthening phase γ′ and improve the uniformity of the structure; aging is to make the dissolved γ′ phase Higher amounts and better cubicity re-precipitate, thereby improving the properties of superalloys. Heat treatment of superalloys is usually carrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C22F1/02C22F1/10
CPCC21D9/0006C22F1/02C22F1/10Y02P10/20
Inventor 盛乃成侯桂臣谢君周亦胄张典
Owner 辽宁红银金属有限公司