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Anti-oxidation device and method for heat treatment of superalloy

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

Active Publication Date: 2022-06-07
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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  • Anti-oxidation device and method for heat treatment of superalloy
  • Anti-oxidation device and method for heat treatment of superalloy
  • Anti-oxidation device and method for heat treatment of superalloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In the present embodiment, the single crystal nickel-based superalloy DD5 small sample for anti-oxidation solid solution heat treatment, the process steps and parameters are as follows:

[0043] The sample is placed in the center of the stage 11, the heat treatment anti-oxidation device is placed into the heat treatment furnace, the furnace door is closed, the intake pipe 12 is connected to the argon cylinder through the furnace wall hole, the argon cylinder switch is opened, so that the argon output end air pressure is 4kg / cm 2About 5 minutes after ventilation, the heat treatment furnace is heated to a solid solution temperature of 1300 °C, during which argon gas is continuously introduced. After the heat treatment is completed, the heat treatment furnace is closed, and after it has dropped to room temperature, the gas valve is closed, the connection between the intake pipe and the argon bottle is disconnected, and the device is removed with the sample.

Embodiment 2

[0045] In the present embodiment, the sample of the single crystal nickel-based superalloy DD5 is heat treated with an antioxidant solid solution, and the process steps and parameters are as follows:

[0046] The sample is placed in the center of the stage 11, the first fixing hole 7 and the second fixing hole 8 are connected, penetrated into the fixing rod 10 fixed, the heat treatment anti-oxidation device is placed into the heat treatment furnace, the furnace door is closed, the intake pipe 12 is connected to the argon cylinder through the furnace wall hole, the argon cylinder switch is opened, and the argon output end air pressure is 6kg / cm 2 About 5 minutes after ventilation, the heat treatment furnace is heated to a solid solution temperature of 1300 °C, during which argon gas is continuously introduced. After the heat treatment is completed, the heat treatment furnace is closed, and after it has dropped to room temperature, the gas valve is closed, the connection between the...

Embodiment 3

[0048] In the present embodiment, the single crystal nickel-based superalloy DD5 large sample is treated with antioxidant solid solution heat treatment, the process steps and parameters are as follows:

[0049] The sample is placed in the center of the stage 11, the first fixing hole 7 and the third fixing hole 9 are connected, through the fixing rod 10 fixed, the heat treatment anti-oxidation device into the heat treatment furnace, close the furnace door, the intake pipe 12 is connected to the argon cylinder through the furnace wall hole, open the argon cylinder switch, so that the argon output end air pressure at 8kg / cm 2 About 5 minutes after ventilation, the heat treatment furnace is heated to a solid solution temperature of 1300 °C, during which argon gas is continuously introduced. After the heat treatment is completed, the heat treatment furnace is closed, and after it has dropped to room temperature, the gas valve is closed, the connection between the intake pipe and the...

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Abstract

The invention relates to the technical field of superalloy heat treatment. In particular, it relates to a high-temperature alloy heat treatment anti-oxidation device and method. The device includes an outer exhaust system, an inner exhaust system, a stage and an air intake duct. The outer exhaust system is an annular hollow structure, and the inner exhaust system is an annular hollow structure. The layer exhaust system is plugged and matched, and the cavity of the inner layer exhaust system communicates with the cavity of the outer layer exhaust system; the inner lower part of the first inner ring part of the outer layer exhaust system is provided with a hollow stage. The outer side of the carrier communicates with the cavity of the outer exhaust system, and the bottom of the stage communicates with one end of the intake pipe. The invention continuously blows inert gas into the high-temperature alloy samples in the heat treatment process from different angles, reduces the contact between the samples and the oxidizing environment, and prevents the high-temperature alloys from being oxidized during the high-temperature heat treatment process. The invention can be used for oxidation protection of high-temperature alloy and other materials when they are subjected to high-temperature heat treatment in an atmospheric environment.

Description

Technical field [0001] The present invention relates to the field of superalloy heat treatment technology, specifically to a superalloy heat treatment anti-oxidation device and method. Background [0002] Superalloys are currently widely used in the manufacture of high-temperature resistant materials such as aero engines and gas turbines. Superalloys often need to be heat treated to improve their performance, and commonly used superalloy heat treatment steps include solid solution and aging. Solution is usually carried out at higher temperatures, for example: DD5 single crystal nickel-based superalloys have a solid solution temperature of up to 1300 ° C, the purpose of which is to dissolve and strengthen the phase γ′ and improve tissue uniformity; Aging is to re-precipitate the dissolved γ′ phase in more quantities and better cubic degrees, thereby improving the performance of the superalloy. Superalloy heat treatment is usually carried out in the air environment of the muffle fu...

Claims

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Application Information

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Patent Type & Authority Patents(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
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