Common Ni-based high temperature alloy for casting and forging pieces

A nickel-based superalloy, casting and forging technology, applied in the metallurgical industry, can solve the problems of high damage frequency, short service life, cracking, etc., and achieve the effect of maintaining stability, less thermal deformation, and increasing strengthening phase

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 problems that the parts in the above-mentioned existing high-temperature devices are prone to deformation, cracking, high frequency of damage and short service life due to their own materials, and provide a Nickel-based superalloys commonly used in casting and forging

Method used

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  • Common Ni-based high temperature alloy for casting and forging pieces

Examples

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Effect test

example 1

[0015] Example 1: Using a 1 ton medium frequency induction furnace for smelting, the chemical composition weighed according to the design scheme of the present invention is: C 0.80kg, Si 6.00kg, Mn 8.00kg, P 0.05kg, S 0.05kg, Cr190.00kg, Ni 310.00kg, Nb 10.00kg, Ti 0.30kg, Zr 0.30kg, the rest is Fe and trace impurities. After all the above ingredients are put into the furnace and melted, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. 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, static casting pipe fittings, etc., and can also be used as steel for forgings. According to different products, different producti...

example 2

[0017] Example 2: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 1.50kg, Si 10.00kg, Mn 12.00kg, P 0.1kg, S 0.12kg, Cr 200.00kg, Ni 330.00kg, Nb 13.00kg, Ti 1.0kg, Zr 1.0kg, the rest is Fe and trace impurities. After all the above ingredients are put into the furnace and melted, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. 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, static casting pipe fittings, etc., and can also be used as steel for forgings. According to different products, different production methods can be...

example 3

[0019] Example 3: Melting in a 1-ton medium-frequency induction furnace, weighing the chemical composition according to the design of the present invention: C 1.80kg, Si 18.00kg, Mn 15.00kg, P 0.25kg, S 0.25kg, Cr 220.00kg, Ni 340.00kg, Nb 16.00kg, Ti 2.00kg, Zr 2.00kg, and the rest are Fe and trace impurities. After all the above ingredients are put into the furnace and melted, samples can be taken to analyze the content of the ingredients, and the slag is deoxidized. 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.

[0020] According to the needs of users, the alloy of the present invention can be used for centrifugal casting pouring pipes, static casting pipe fittings, etc., and can also be used as steel for forgings. According to different products, different production method...

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Abstract

The invention relates to metallurgical industry, and provides a common Ni-based high temperature alloy for casting and forging pieces, which comprises the following chemical components in percentage by weight: 0.08 to 0.18 percent of C, 0.60 to 1.60 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, 19.00 to 22.00 percent of Cr, 31.00 to 34.00 percent of Ni, 1.00 to 1.60 percent of Nb, 0.03 to 0.20 percent of Ti, 0.03 to 0.20 percent of Zr, and the balance of Fe and trace impurities. The common Ni-based high temperature alloy for casting and forging pieces overcomes the disadvantages of deforming, cracking and short service life of spare parts of high temperature devices made of the prior common used steel in the petrochemical industry, themetallurgical industry and the like, is characterized by strong yield strength and excellent high temperature stability, is particularly suitable for casting and forging pieces used at the high temperature of 700 to 1,000 DEG C and under high pressure, and is mainly used for manifolds, tail tubes, joints, pipe fittings, fittings, forging pieces and the like of high temperature devices in the petrochemical industry, the metallurgical industry and the like.

Description

(1) Technical field: [0001] The invention relates to the metallurgical industry, and is a nickel-based superalloy commonly used in casting and forging. (two) background technology: [0002] The manifolds, tailpipes, joints, big and small heads, and pipe fittings in high-temperature devices of petrochemical systems are all important components in high-temperature devices, and they all need to withstand high temperature and high pressure for a long time. After these components have been used online for a period of time, they often have defects such as deformation, micro-cracks, and some cracks. The use environment is harsh and the frequency of damage is high, which affects the normal operation of the equipment. The main reason is that the high-temperature comprehensive performance of the alloy of the manufacturing material of these parts is poor. (3) Contents of the invention: [0003] The purpose of the present invention is to solve the problems that the parts in the above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/50
Inventor 李土振吴永华宋洋溢阮志刚
Owner 黄石山力大通热工设备有限公司
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