Nickel-based alloy for high-temperature fan shaft and preparation method thereof

A nickel-based alloy and fan shaft technology, which is applied in the field of nickel-based alloys for high-temperature fan shafts and its preparation, can solve the problems of short service life of high-temperature fans and poor high-temperature resistance, and achieve extended service life and strong oxidation resistance , Good effect of high temperature strength

Inactive Publication Date: 2021-03-09
江苏新核合金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the continuous increase of industrial electric furnaces and the continuous increase of heat treatment process temperature, higher requirements are put forward for the performance of high-temperature corrosion-resistant alloy materials for high-temperature fan shafts, and the performance of alloy materials currently used in high-temperature fan shafts still exists. The disadvantage of poor high-temperature performance cannot meet the requirements of industrial applications, and the high-temperature fans made of existing alloy materials have a short service life

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  • Nickel-based alloy for high-temperature fan shaft and preparation method thereof

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preparation example Construction

[0031] According to another aspect of the present invention, a method for preparing the above-mentioned nickel-based alloy for high-temperature fan shafts is provided, please refer to figure 1 , figure 1 It is a flowchart of a method for preparing a nickel-based alloy for a high-temperature fan shaft of the present invention, and the method for preparing a nickel-based alloy for a high-temperature fan shaft includes the following steps:

[0032] Step S1: Raw material preparation: Raw materials are accurately proportioned according to the design composition, and each raw material is prepared with brand-new materials. The surface of all raw materials is polished and baked before use; among them, the raw material nickel needs to be baked at 780°C for more than 4 hours, and the raw material chromium needs to be baked for more than 4 hours. Bake at 400°C for more than 2 hours, and the raw silicon needs to be baked at 700°C for more than 4 hours. The dosing process needs to strictl...

Embodiment 1

[0041] In a nickel-based alloy for a high-temperature fan shaft in Example 1 of the present invention, the weight percentages of each element are: C: 0.075%, Si: 0.60%, Mn: 0.50%, P: 0.008%, S: 0.006%, Cr : 21.5%, Al: 1.20%, Fe: 1.85%, Co: 12.0%, Ti: 0.45%, and the balance is Ni and unavoidable impurities.

[0042] The preparation method of above-mentioned nickel base alloy comprises:

[0043] Step S1: Raw material preparation: Raw materials are accurately proportioned according to the design composition, and each raw material is prepared with brand-new materials. The surface of all raw materials is polished and baked before use; among them, the raw material nickel needs to be baked at 780°C for more than 4 hours, and the raw material chromium needs to be baked for more than 4 hours. Bake at 400°C for more than 2 hours, and the raw silicon needs to be baked at 700°C for more than 4 hours.

[0044] Step S2: Vacuum smelting: raw materials are loaded into the furnace, iron and n...

Embodiment 2

[0050] In a nickel-based alloy for a high-temperature fan shaft in Example 2 of the present invention, the weight percentages of each element are: C: 0.06%, Si: 0.52%, Mn: 0.65%, P: 0.006%, S: 0.003%, Cr : 22.5%, Al: 1.10%, Fe: 1.65%, Co: 11.8%, Ti: 0.50%, and the balance is Ni and unavoidable impurities.

[0051] The preparation method of above-mentioned nickel base alloy comprises:

[0052] Step S1: Raw material preparation: Raw materials are accurately proportioned according to the design composition, and each raw material is prepared with brand-new materials. The surface of all raw materials is polished and baked before use; among them, the raw material nickel needs to be baked at 780°C for more than 4 hours, and the raw material chromium needs to be baked for more than 4 hours. Bake at 400°C for more than 2 hours, and the raw silicon needs to be baked at 700°C for more than 4 hours.

[0053] Step S2: Vacuum smelting: raw materials are loaded into the furnace, iron and ni...

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Abstract

The invention provides a nickel-based alloy for a high-temperature fan shaft. The nickel-based alloy comprises the following elements of, in percentage by weight, 0.05-0.10% of C, less than or equal to 0.70% of Si, less than or equal to 0.70% of Mn, less than or equal to 0.012% of P, less than or equal to 0.008% of S, 20.0-23.0% of Cr, 0.60-1.50% of Al, less than or equal to 2.0% of Fe, 10.0-13.0%of Co, 0.20-0.60% of Ti and the balance Ni and inevitable impurities. A preparation method of the nickel-based alloy for the high-temperature fan shaft comprises the steps of raw material preparation, vacuum smelting, electroslag remelting, forging, heat treatment and bar turning. The nickel-based alloy prepared through the method has the advantages of being good in high-temperature strength, high in high-temperature corrosion resistance and high in oxidation resistance, the alloy purity is high, impurities are few, metallographic structures and chemical components are uniform, the nickel-based alloy is applied to manufacturing of the high-temperature fan shaft, and the service life of a high-temperature fan can be prolonged.

Description

technical field [0001] The invention relates to the field of high-temperature corrosion-resistant alloy materials, in particular to a nickel-based alloy for a high-temperature fan shaft and a preparation method thereof. Background technique [0002] In heat treatment equipment such as high-temperature annealing furnaces in metallurgy and chemical industries, high-temperature axial flow fans and high-temperature centrifugal fans are common equipment used for ventilation or enhanced heat dissipation. The fan in the high-temperature annealing furnace is in a high-temperature environment for a long time, and the fan shaft needs to have high temperature resistance and corrosion resistance. Because nickel-based alloys have high high-temperature mechanical properties, excellent oxidation resistance and corrosion resistance, etc., high-temperature fan shafts are generally made of nickel-based alloys. With the continuous increase of industrial electric furnaces and the continuous in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22B9/04C22B9/18C22C1/02C22F1/10
CPCC22B9/04C22B9/18C22C1/023C22C19/058C22F1/10
Inventor 华鹏华丽平夏东兴张加国武冬平
Owner 江苏新核合金科技有限公司
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