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Method for producing cupronickel alloy round ingot

A production method and alloy technology, applied in the field of production of cupronickel alloy round ingots, can solve the problems of increased factors affecting the quality of round ingots, unfavorable quality control of round ingots, and large consumption of liquid metal covering agents, so as to eliminate structural defects such as pores , stabilize the quality of liquid metal, and improve the effect of ingot quality control

Inactive Publication Date: 2020-02-11
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high casting temperature of the cupronickel alloy, the consumption of graphite parts and liquid metal covering agent is large, and the long process control leads to the increase of factors affecting the quality of the round ingot, which is not conducive to the quality control of the round ingot

Method used

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  • Method for producing cupronickel alloy round ingot

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Effect test

Embodiment 1

[0026] Production of a cupronickel alloy round ingot with a nickel content of 4.4%-5%. The total amount of alloy is 4000kg, wherein the proportion of new metal is 50%, and the proportion of process returned material is 50%. Add 45% electrolytic copper and 5% electrolytic nickel into the furnace for melting, add 50% process return material after all the materials are melted, and add charcoal on the metal surface. The amount of charcoal is 6kg per ton of alloy . After all the metal materials are completely melted, the temperature of the liquid metal is raised to 1280-1300°C. Use a slag removal tool to clean up all the scum on the surface of the liquid metal. Evenly sprinkle a layer of cryolite on the surface of the liquid metal, and the amount of cryolite added is 4.8kg. Then immediately add the remaining 9kg of charcoal to the surface of the liquid metal, and cover it evenly to ensure that the liquid metal does not leak. Sampling is carried out to analyze the content of che...

Embodiment 2

[0028] Produce a cupronickel alloy round ingot with a nickel content of 10% to 11%, an iron content of 1.5% to 1.8%, and a manganese content of 0.5% to 1%. The total amount of alloy is 4000kg, wherein the proportion of new metal is 50%, and the proportion of process returned material is 50%. Add 43.5% electrolytic copper, 10.75% electrolytic nickel, and 0.75% iron into the furnace for melting. After all the materials are melted, add 50% of the process return material, and add charcoal on the metal surface. The amount of charcoal 6kg per ton of alloy. After all the metal materials are completely melted, the temperature of the liquid metal is raised to 1280-1300°C. Use a slag removal tool to clean up all the scum on the surface of the liquid metal. Add 0.45% electrolytic manganese, and evenly sprinkle a layer of cryolite on the liquid metal surface. The addition amount of cryolite is 4.8kg. Then immediately add the remaining 9kg of charcoal to the surface of the liquid metal...

Embodiment 3

[0030] Produce a cupronickel alloy round ingot with a nickel content of 30% to 31.5%, an iron content of 0.5% to 1%, and a manganese content of 0.5% to 1.2%. The total amount of alloy is 4000kg, wherein the proportion of new metal is 50%, and the proportion of process returned material is 50%. Add 33.5% electrolytic copper, 16% electrolytic nickel, and 0.5% iron into the furnace for melting, add 50% of the process return material after all the materials are melted, and add charcoal on the metal surface. The amount of charcoal 6kg per ton of alloy. After all the metal materials are completely melted, the temperature of the liquid metal is raised to 1280-1300°C. Use a slag removal tool to clean up all the scum on the surface of the liquid metal. Add 0.45% electrolytic manganese, and evenly sprinkle a layer of cryolite on the liquid metal surface. The addition amount of cryolite is 4.8kg. Then immediately add the remaining 9kg of charcoal to the surface of the liquid metal, a...

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Abstract

The invention discloses a method for producing a cupronickel alloy round ingot. The general formula of produced cupronickel alloy is CuaNibFecMnd, wherein by mass percent, b is larger than or equal to4% and smaller than or equal to 31.5%, c is larger than or equal to 0% and smaller than or equal to 1.8%, d is larger than or equal to 0% and smaller than or equal to 1.2%, the balance is a, and thesum of impurities in the alloy is not larger than 0.5%. According to the method, solid metal is melted through an intermediate frequency furnace, a refining agent is added for refining, refined liquidmetal with qualified ingredients passes through a transferring runner and a graphite crucible and directly enters a crystallizer, and a round ingot producing process is simplified; and ingot castingquality control influence factors are reduced, and consumption of a graphite part in the cupronickel alloy round ingot production process is reduced. According to the method, a desoxidant is added atdifferent times to deoxidize the liquid metal, air sucked in the process that the liquid metal passes through the runner and is directly transferred is eliminated, the quality of the liquid metal is stabilized, and the quality of a round ingot crystal structure is improved.

Description

technical field [0001] The invention belongs to the technical field of metal ingot production and relates to a production method of a cupronickel alloy round ingot. Background technique [0002] Nickel-nickel alloy is widely used in industries such as marine ships, marine engineering, musical instruments and medical equipment because of its good resistance to seawater corrosion, resistance to marine organisms, and beautiful color. The current production of cupronickel alloy round ingots is generally carried out by production equipment with flow control devices for graphite parts, and the process control process is relatively long. Due to the high casting temperature of the cupronickel alloy, the consumption of graphite parts and liquid metal covering agent is large, and the long process control leads to the increase of factors affecting the quality of the round ingot, which is not conducive to the quality control of the round ingot. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22C1/06
CPCC22C1/02C22C1/06C22C9/06
Inventor 杨俊辉付成文陈振锋林浩
Owner JINCHUAN GROUP LIMITED
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