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High-temperature fan corrosion-resistant alloy and preparation method thereof

A corrosion-resistant alloy and fan technology, applied in the field of corrosion-resistant alloys for high-temperature fans and its preparation, can solve the problems of poor high-temperature resistance and short service life of high-temperature fans, and achieve strong oxidation resistance, extended service life, and high-temperature good strength effect

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 fans, and the performance of alloy materials currently used in high-temperature fans still has high-temperature resistance. The disadvantage of not being strong can not meet the requirements of industrial applications, and the service life of high-temperature fans made of existing alloy materials is relatively short

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  • High-temperature fan corrosion-resistant alloy 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 corrosion-resistant alloy for high-temperature fans is also provided, please refer to figure 1 , figure 1 It is a flowchart of a method for preparing a corrosion-resistant alloy for a high-temperature fan of the present invention, and the method for preparing a corrosion-resistant alloy for a high-temperature fan 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. Baking at 400°C for more than 2 hours, raw silicon needs to be baked at 700°C for more than 4 hours; the batching process needs to stri...

Embodiment 1

[0041] In a corrosion-resistant alloy for high-temperature fans in Example 1 of the present invention, the weight percentages of each element are: C: 0.08%, Si: 0.50%, Mn: 0.45%, P: 0.008%, S: 0.006%, Cr: 21.5%, Al: 1.10%, Fe: 1.80%, Co: 11.6%, Ti: 0.45%, and the balance is Ni and unavoidable impurities.

[0042] The preparation method of this alloy is as follows:

[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 nickel are added to th...

Embodiment 2

[0050] In a corrosion-resistant alloy for high-temperature fans in Example 2 of the present invention, the weight percentages of each element are: C: 0.07%, Si: 0.55%, Mn: 0.65%, P: 0.009%, S: 0.007%, Cr: 22.5%, Al: 1.25%, Fe: 1.50%, Co: 12.3%, Ti: 0.50%, and the balance is Ni and unavoidable impurities.

[0051] The preparation method of this alloy is as follows:

[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. Baking at 400°C for more than 2 hours, 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 nickel are added to the bott...

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Abstract

The invention provides a high-temperature fan corrosion-resistant alloy. The alloy comprises the following elements, in percentage by weight, of 0.05% to 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% to 23.0% of Cr, 0.60% to 1.50% of Al, less than or equal to 2.0% of Fe, 10.0% to 13.0% of Co, 0.20% to 0.60% of Ti and the balance Ni and inevitable impurities. A preparation method of the high-temperature fan corrosion-resistant alloy comprises the steps of raw material preparation, vacuum smelting, electroslag remelting, forging, plate rolling and heat treatment. According to the alloy and the method, components and a process of the alloy are optimally designed, the alloy has the advantages of being good in high-temperature strength, high in high-temperature corrosion resistance and high in oxidation resistance, 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 corrosion-resistant alloy for high-temperature fans used in industries such as high-temperature annealing furnaces and graphene, 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 its fan shaft and impeller need 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 fans are generally made of nickel-based alloys. ...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/03C22B9/04C22B9/18C22F1/10
CPCC22B9/04C22B9/18C22C1/023C22C1/03C22C19/058C22F1/10
Inventor 刘威陈杰戴雪琴武冬平邵兴明
Owner 江苏新核合金科技有限公司
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