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Method for producing huge high-purity nickel ingot square billets through four-gun electron beam cold bed furnace

An electron beam cooling bed furnace and nickel ingot technology, applied in the field of engineering applications, can solve problems such as reports that have not yet been found, and achieve the effects of shortening the process flow, fast casting speed, and good economic benefits

Active Publication Date: 2014-12-10
YUNNAN TITANIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through the retrieval of prior art documents, no relevant reports have been found about the production of giant high-purity nickel ingot billets by a four-gun electron beam cooling hearth furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Use electrolytic nickel with a purity of 99.5% as the raw material. After cleaning the surface, cut the electrolytic nickel. The diagonal line of the cut nickel block is ≤ 120mm, and then clean and dry the cut nickel block again. The drying temperature is 140°C, the drying time is 130min, and the small nickel block is put into the feeding system of the electron beam cold bed furnace, and the furnace body is pumped into the air, when the vacuum of the furnace body reaches ≤5.0×10 -5 hPa, vacuumize the cavity of the electron gun, and when the condition of opening the gun is reached, turn on 1 # The electron gun preheats the smelting cooling bed, the preheating power is 300kW, and the voltage is 40kV. After the preheating is over, the feeding system is turned on to feed the raw materials into the smelting cooling bed, and the power of the electron gun is loaded to the power required for smelting , The melting power is 450kW, and the voltage is 45kV. Start smelting, when t...

Embodiment 2

[0024] Use electrolytic nickel with a purity of 99.5% as the raw material. After cleaning the surface, cut the electrolytic nickel. The diagonal line of the cut nickel block is ≤ 120mm, and then clean and dry the cut nickel block again. The drying temperature is 148°C, the drying time is 120min, and the small nickel block is put into the feeding system of the electron beam cold bed furnace, and the furnace body is evacuated. When the vacuum of the furnace body reaches ≤5.0×10 -5 hPa, vacuumize the cavity of the electron gun, and when the condition of opening the gun is reached, turn on 1 # The electron gun preheats the smelting cooling bed, the preheating power is 300W, and the voltage is 40kV. After the preheating is over, the feeding system is turned on to feed the raw materials into the smelting cooling bed, and the power of the electron gun is loaded to the power required for smelting , The melting power is 500kW, and the voltage is 50kV. Start smelting, when the nickel l...

Embodiment 3

[0026] Use electrolytic nickel with a purity of 99.5% as the raw material. After cleaning the surface, cut the electrolytic nickel. The diagonal line of the cut nickel block is ≤ 120mm, and then clean and dry the cut nickel block again. The drying temperature is 155°C, the drying time is 110min, and the small nickel block is put into the feeding system of the electron beam cold bed furnace, and the furnace body is pumped into the air, when the vacuum of the furnace body reaches ≤5.0×10 -5 hPa, vacuumize the cavity of the electron gun, and when the condition of opening the gun is reached, turn on 1 # The electron gun preheats the smelting cooling bed, the preheating power is 300kW, and the voltage is 40kV. After the preheating is over, the feeding system is turned on to feed the raw materials into the smelting cooling bed, and the power of the electron gun is loaded to the power required for smelting , The melting power is 550kW, and the voltage is 55kV. Start smelting, when t...

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PUM

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Abstract

The invention discloses a method for producing huge high-purity nickel ingot square billets through a four-gun electron beam cold bed furnace. The method comprises the following steps that electrolytic nickel with the purity of 99.5 percent is selected, the surface of the electrolytic nickel is cleaned, the electrolytic nickel is cut into small blocks with the diagonals smaller than or equal to 120 mm, the small blocks are cleaned, dried and smelted in the electron beam cold bed furnace, continuous casting is carried out through a square crystallizer, and the huge high-purity nickel ingot square billets are obtained. According to the method, the electron beam cold bed furnace is used for carrying out smelting, the smelting speed is high, the whole smelting process is carried out under a highly vacuum condition, air pollution is avoided, and gas impurities can be effectively eliminated. As a refining cold bed is arranged, removal of saturated low-steam-pressure impurities, high-density impurities and low-density impurities can be realized in the smelting process, and smelting and purification can be carried out simultaneously. By replacing the crystallizer, the huge high-purity nickel ingot square billets of different specifications can be produced, the processes of skinning, forging and the like in the prior art are simplified, the production cost is reduced, and the production efficiency of nickel plates and strips is largely improved.

Description

technical field [0001] The invention relates to a method for producing a giant high-purity nickel ingot billet in a four-gun electron beam cooling bed furnace, which belongs to the technical field of engineering application. Background technique [0002] With the rapid development of semiconductor integrated circuits, microelectronics industry and aerospace industry. Nickel and its alloys are widely used in the preparation of electronics, magnetic films, high-purity reagents, and standard samples in integrated circuits. They are indispensable and important materials for modern industry, and play an important role in national economy, national defense construction, and modern information society. extremely important strategic role. [0003] At present, the method of obtaining high-grade nickel raw materials in China is still dominated by electrolysis. However, the electrolytic nickel produced by the electrolytic method has defects such as low density and a large amount of g...

Claims

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Application Information

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IPC IPC(8): B22D7/06C22B9/16C22B23/06
Inventor 黄海广曹占元李志敏史亚鸣保贵华丁辉刘路
Owner YUNNAN TITANIUM IND
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