A kind of oxidation-resistant nickel-based superalloy powder and its preparation method

A high-temperature alloy, nickel oxide-based technology, applied in the preparation of anti-oxidation nickel-based superalloy powder, anti-oxidation nickel-based superalloy powder field, can solve the problem of high content of carbon oxides in nickel-based alloy powder, to eliminate composition segregation, Reduced carbon oxide content, avoiding the effect of high melting point carbides and oxides

Active Publication Date: 2021-07-30
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-oxidation nickel-based superalloy powder, which solves the problem of high carbon oxide content in the prepared nickel-based alloy powder existing in the prior art

Method used

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  • A kind of oxidation-resistant nickel-based superalloy powder and its preparation method
  • A kind of oxidation-resistant nickel-based superalloy powder and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0042] The preparation method of an anti-oxidation nickel-based superalloy powder of the present invention is specifically carried out according to the following steps:

[0043] Step 1, get the alloy of 64% Ni, 19% Cr, 13% W, 0.5% Mo, and 3.5% Nb for subsequent use;

[0044] Step 2, putting the alloy in step 1 into a vacuum induction furnace for melting, and then remelting in a vacuum consumable furnace to obtain a master alloy ingot with a diameter of 80 mm.

[0045] Step 3: Put the master alloy ingot into a high-temperature box-type resistance furnace, heat-treat it at 1210°C for 12 hours to homogenize its composition, then cool to room temperature with the furnace, and machine the cooled master alloy ingot into Electrode rod, the diameter of the electrode rod is 75mm, and the length is 650mm;

[0046] Step 4, put the electrode rod into the plasma rotary electrode powder making machine, vacuumize and fill it with argon gas, adjust the power of the plasma gun to 30KW, use th...

Embodiment 2

[0050] The preparation method of an anti-oxidation nickel-based superalloy powder of the present invention is specifically carried out according to the following steps:

[0051] Step 1, get the alloy of 61% Ni, 20% Cr, 14% W, 1% Mo, and 4% Nb for subsequent use;

[0052] Step 2, putting the alloy in step 1 into a vacuum induction furnace for melting, and then remelting in a vacuum consumable furnace to obtain a master alloy ingot with a diameter of 80 mm.

[0053] Step 3: Put the master alloy ingot into a high-temperature box-type resistance furnace, heat-treat it at 1230°C for 16 hours to make its composition homogeneous, then cool to room temperature with the furnace, and machine the cooled master alloy ingot into Electrode rod, the diameter of the electrode rod is 78mm, and the length is 665mm;

[0054] Step 4, put the electrode rod into the plasma rotary electrode powder making machine, vacuumize and fill it with argon gas, adjust the power of the plasma gun to 33KW, use ...

Embodiment 3

[0058] The preparation method of an anti-oxidation nickel-based superalloy powder of the present invention is specifically carried out according to the following steps:

[0059] Step 1, get the alloy of 58% Ni, 21% Cr, 15% W, 1.5% Mo, and 4.5% Nb for subsequent use;

[0060] Step 2, putting the alloy in step 1 into a vacuum induction furnace for melting, and then remelting in a vacuum consumable furnace to obtain a master alloy ingot with a diameter of 80 mm.

[0061] Step 3: Put the master alloy ingot into a high-temperature box-type resistance furnace, heat-treat it at 1250°C for 20 hours to homogenize its composition, and then cool to room temperature with the furnace, and machine the cooled master alloy ingot into Electrode rod, the diameter of the electrode rod is 80mm, and the length is 680mm;

[0062] Step 4, put the electrode rod into the plasma rotary electrode powder making machine, vacuumize and fill it with argon gas, adjust the power of the plasma gun to 35KW, us...

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Abstract

The invention discloses an anti-oxidation nickel-based superalloy powder and a preparation method thereof. Alloy elements such as Ni, Cr, and W are taken according to the proportion, the alloy is put into a vacuum induction furnace for smelting, and then placed in a vacuum consumable furnace for reheating. The master alloy ingot is obtained by melting, and the master alloy ingot is made into an electrode rod; the electrode rod is put into a plasma rotary electrode pulverizer, and the end of the electrode rod is melted with a plasma gun to obtain a spherical powder; the spherical powder is passed through an ultrasonic vibrating sieve. Screening; and then electrostatically separate the spherical powder to remove non-metallic impurities in the spherical powder to obtain pure alloy powder. In the present invention, by replacing a part of W element with Nb element, the content of W element is reduced, the formation tendency of W carbon oxide is weakened, and the content of W carbon oxide in the alloy is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of superalloys, relates to an oxidation-resistant nickel-based superalloy powder, and also relates to a preparation method of the oxidation-resistant nickel-based superalloy powder. Background technique [0002] Nickel-based alloys have excellent comprehensive properties, and the maximum service temperature can reach 1100 ° C. They can be widely used in the manufacture of gas turbine engine combustion chambers, high-speed aircraft hot-end components, high-temperature air-cooled reactor heat exchange tubes, and corrosion-resistant components in the chemical industry. [0003] The Haynes230 alloy developed by Haynes Company of the United States is a Ni-20Cr-18W-X alloy with excellent comprehensive properties. Due to the high content of refractory metal W in the alloy, there are a large number of carbon oxides of W with high melting point in the alloy. During the pulverization process, these carbon oxides canno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C1/04B22F9/14B22F1/00
CPCC22C19/055C22C19/056C22C1/0433B22F9/14B22F1/05
Inventor 韩志宇李安白瑞敏刘洋赖运金梁书锦王庆相
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
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