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Cast special Ni-based high temperature alloy

A high-temperature alloy and special nickel technology, applied in the metallurgical industry, can solve the problems of unsatisfactory performance, deformation, and short service life of alloy materials, and achieve the effect of reasonable chemical composition.

Inactive Publication Date: 2010-02-03
黄石山力大通热工设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the components in the above-mentioned existing high-temperature devices are not ideal due to their own alloy material properties, easy to crack, oxidize, deform, and have a short service life, and provide a casting special nickel-based superalloy

Method used

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  • Cast special Ni-based high temperature alloy

Examples

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Effect test

example 1

[0013] Example 1: Using a 1 ton intermediate frequency induction furnace for smelting, the chemical composition weighed according to the design scheme of the present invention is: C 4.00kg, Si 10.00kg, Mn 8.00kg, P 0.05kg, S 0.05kg, Cr 270.00kg, Ni 470.00kg, W 30.00kg, Co 20.00kg, the rest is Fe and unavoidable trace impurities. Put all the above ingredients into the furnace and melt them, then take samples to analyze the content of the ingredients, and slag and deoxidize. If there is any deviation in the ingredients, it should be adjusted until it is qualified. After the composition is qualified, the molten steel is well deoxidized, and the temperature meets the process requirements, steel preparations can be made.

[0014] According to the needs of users, the alloy of the present invention can be used for centrifugal casting pouring pipes, such as radiant pipes, elbows, etc., or for casting static castings, such as feeding baskets, steering rollers, etc., and can be produced...

example 2

[0015] Example 2: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 5.00kg, Si 15.00kg, Mn 12.00kg, P 0.1kg, S 0.1kg, Cr290.00kg, Ni 485.00kg, W 45.00kg, Co 25.00kg, the rest is Fe and unavoidable trace impurities. Put all the above ingredients into the furnace and melt them, then take samples to analyze the content of the ingredients, and slag and deoxidize. If there is any deviation in the ingredients, it should be adjusted until it is qualified. After the composition is qualified, the molten steel is well deoxidized, and the temperature meets the process requirements, steel preparations can be made.

[0016] According to the needs of users, the alloy of the present invention can be used for centrifugal casting pouring pipes, such as radiant pipes, elbows, etc., or for casting static castings, such as feeding baskets, steering rollers, etc., and can be produced by different production ...

example 3

[0017] Example 3: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 6.00kg, Si 17.50kg, Mn 15.00kg, P 0.25kg, S 0.25kg, Cr 310.00kg, Ni 500.00kg, W 60.00kg, Co 30.00kg, the rest is Fe and unavoidable trace impurities. Put all the above ingredients into the furnace and melt them, then take samples to analyze the content of the ingredients, and slag and deoxidize. If there is any deviation in the ingredients, it should be adjusted until it is qualified. After the composition is qualified, the molten steel is well deoxidized, and the temperature meets the process requirements, steel preparations can be made.

[0018] According to the needs of users, the alloy of the present invention can be used for centrifugal casting pouring pipes, such as radiant pipes, elbows, etc., or for casting static castings, such as feeding baskets, steering rollers, etc., and can be produced by different producti...

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Abstract

The invention relates to metallurgical industry, and provides a cast special Ni-based high temperature alloy, which comprises the following chemical components in percentage by weight: 0.40 to 0.60 percent of C, 1.00 to 1.75 percent of Si, 0.80 to 1.50 percent of Mn, less than 0.03 percent of P, less than 0.03 percent of S, 27.00 to 31.00 percent of Cr, 47.00 to 50.00 percent of Ni, 3.00 to 6.00 percent of W, 2.00 to 3.00 percent of Co, and the balance of Fe and trace impurities. By changing a metallographic structure, the cast special Ni-based high temperature alloy improves heat resistance and high temperature performance of steel, and can effectively reduce heat deformation and improve service life, and is mainly used for manufacturing radiation tubes, pipe fittings, fittings and the like of high temperature devices in the petrochemical industry, the metallurgical industry and other industries.

Description

(1) Technical field: [0001] The invention relates to the metallurgical industry, and is a casting special nickel-based superalloy. (two) background technology: [0002] Pendants, pipe fittings, tube sheets, etc. in high-temperature devices in petrochemical systems; radiant tubes, elbows, and material baskets, etc. in various heat treatment furnaces in metallurgical systems; steering rollers and other components in glass production lines in building materials industry, all need to withstand high temperature for a long time . These parts are usually made of ZG40Cr25Ni20 or ZGNi48Cr28. After a period of use, these alloy products have defects such as cracking, oxidation, and deformation. The service life is short and the replacement frequency is high, which affects the normal operation of the equipment. (3) Contents of the invention: [0003] The purpose of the present invention is to solve the problem that the parts in the existing high-temperature device are not ideal in pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05
Inventor 李土振吴永华阮志刚贾成涛
Owner 黄石山力大通热工设备有限公司
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