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Method for preparing high-purity nickel ingot

A nickel ingot and high-purity technology, applied in the field of preparing high-purity nickel ingots, can solve the problems of difficult removal of individual impurity elements, single product specifications and high production costs, and achieve the effects of diversification, product quality improvement, and fast melting speed.

Inactive Publication Date: 2009-09-09
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing high-purity nickel ingots that can effectively solve the problems of single product specifications, difficulty in removing individual impurity elements, low density, and high production costs.

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  • Method for preparing high-purity nickel ingot

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Embodiment Construction

[0011] A method for preparing high-purity nickel ingots, the specific operations of the preparation process are as follows:

[0012] a. Using 5N (purity greater than 99.999%) electrolytic nickel as raw material, cut the electrolytic nickel plate according to the charging requirements, and after successively pickling, ultrasonic cleaning, vacuum drying, and binding, the bound nickel The material is manually placed on the conveying roller table in the electron beam furnace, and the furnace door is closed;

[0013] b. Supply water, electricity and gas to the equipment to ensure that the cooling water circulation of each part is smooth, the power supply is in place, and the compressed air supply is normal;

[0014] c. Turn on the diffusion pump for preheating. After 2 hours, turn on each vacuum pump and corresponding valves in order to vacuumize the furnace body and gun chamber. The final vacuum of the gun chamber is 6.3×10 -4 Pa, focus vacuum is 5.3×10 -4 Pa, the vacuum in the ...

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Abstract

The invention discloses a method for preparing high-purity nickel ingot, relating to a method for preparing high-purity nickel ingot by high-purity nickel plate, which is obtained by electrolyzing method through an electron-beam furnace and corresponding electron beam melting technique. The method is characterized in that in the preparing process, electrolytic nickel with purity higher than 99.999% is taken as raw material; and electron beam melting is adopted after surface cleaning to obtain high-purity nickel ingot. The method of the invention uses electron beam as a heat producer with rapid melting speed, thereby improving melting efficiency. The melting process is carried out in vacuum where the process is free of external air pollution, therefore, air impurity removing effect is good. High-purity nickel ingots of various specifications, ranging from Phi80 millimetres to Phi300 millimetres, can be prepared by replacing pots, thereby simplifying complex process, reducing production cost and saving energy. Therefore, the method for realizes diversity of products, optimizes physical property, and raises product quality so as to completely meet operation requirements of various downstream customers.

Description

technical field [0001] A method for preparing high-purity nickel ingots relates to a method for preparing high-purity nickel ingots by using high-purity nickel plates obtained by an electrolysis method through an electron beam melting furnace and related electron beam melting technology. Background technique [0002] 5N high-purity nickel is mainly used for sputtering targets and ion coatings in the microelectronics industry, manufacturing high-purity reagents, standard samples, and advanced alloys. Its precision alloy materials are widely used in military, aviation, and aerospace fields, and have a huge potential market. In recent years, some The demand for high-purity nickel in special fields is gradually increasing, for example, super alloys made of high-purity nickel are used in the manufacture of aircraft engines, atomic reactor protection materials, biological materials and low-expansion alloys; high-purity nickel for the electronics industry is also gradually increasin...

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Application Information

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IPC IPC(8): C22B23/06C22B9/04
Inventor 杨志强武浚闫忠强胡敏艺冯晓锐张亚东杨艳贺建军白延利郭廷宏何忠艾琳柴明强王敏
Owner JINCHUAN GROUP LIMITED
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