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Short-process preparation method for high-purity nickel strip material

A short-process, high-purity technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of high raw material prices and low production efficiency of high-purity nickel plates, and achieve high yield, improve production efficiency, and process flow short effect

Active Publication Date: 2021-03-12
无锡市东杨新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-purity nickel plate raw materials used in this method are relatively expensive, and the subsequent processing procedures such as hot rolling and cold rolling must be performed after the nickel plates are connected by plasma welding, and the production efficiency is reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A short process preparation method for high-purity nickel strips, comprising the following steps:

[0019] (1) Fill the high-purity electrolytic nickel powder with an average particle size of 8 microns into the nickel sheath, heat it to 600°C in the sheath making equipment, and evacuate to 10 -6 Pa, after sealing and welding the sheath, put it into a hot isostatic press for sintering and densification. The sintering temperature is 1200 ° C, the pressure is 50 MPa, and the heat preservation and pressure holding time is 0.5 hours;

[0020] (2) Preheat the above-mentioned hot isostatic nickel billet strip in an air heating furnace at a heating temperature of 1000°C, perform multi-pass hot rolling, and roll it into a plate of required thickness;

[0021] (3) Heat the hot-rolled sheet in a hydrogen reduction furnace at a reduction temperature of 600°C;

[0022] (4) Cold-rolling the reduction-annealed plate to make a high-purity nickel strip with a purity of 99.9999%.

Embodiment 2

[0024] A short process preparation method for high-purity nickel strips, comprising the following steps:

[0025] (1) Fill the high-purity carbonyl nickel powder with an average particle size of 3 microns into the nickel sheath, heat it to 300°C in the sheath making equipment, and evacuate to 10 -5 Pa, after sealing and welding the sheath, put it into a hot isostatic press for sintering and densification, the sintering temperature is 850°C, the pressure is 200 MPa, and the heat preservation and pressure holding time is 5 hours;

[0026] (2) Preheat the above-mentioned hot isostatic nickel billet strip in an air heating furnace at a heating temperature of 600°C, perform multi-pass hot rolling, and roll it into a plate of required thickness;

[0027] (3) Heat the hot-rolled sheet in a hydrogen reduction furnace at a reduction temperature of 400°C;

[0028] (4) The reduction annealed plate is cold-rolled to make a high-purity nickel strip with a purity of 99.999%.

Embodiment 3

[0030] A short process preparation method for high-purity nickel strips, comprising the following steps:

[0031] (1) Fill the high-purity reduced nickel powder with an average particle size of 10 microns into the nickel sheath, heat it to 500°C in the sheath making equipment, and evacuate to 10 -6 Pa, after sealing and welding the sheath, put it into a hot isostatic press for sintering and densification. The sintering temperature is 1000 ° C, the pressure is 120 MPa, and the heat preservation and pressure holding time is 3 hours;

[0032] (2) Preheat the above-mentioned hot isostatic nickel billet strip in an air heating furnace at a heating temperature of 900°C, perform multi-pass hot rolling, and roll it into a plate of required thickness;

[0033] (3) Heat the hot-rolled sheet in a hydrogen reduction furnace at a reduction temperature of 550°C;

[0034] (4) The reduction annealed plate is cold-rolled to make a high-purity nickel strip with a purity of 99.999%.

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Abstract

The invention belongs to the technical field of nickel material processing and particularly relates to a short-process preparation method for a high-purity nickel strip material. In the short-processpreparation method, high-purity nickel powder is subjected to hot isostatic pressing sintering to form a compact nickel blank body after being filled into a casing, vacuumized and sealed and welded, and then a plate strip material is formed after hot rolling and cold rolling are performed. According to the short-process preparation method for the high-purity nickel strip material, oxygen, nitrogenand other interstitial element impurities are not introduced in the casing and nickel blank hot isostatic pressing sintering process, pollution of air preheating oxidation to internal high-purity nickel is avoided by the hot rolling with the casing, and compared with a traditional high-purity nickel preparation process, the short-process preparation method for the high-purity nickel strip material is short in technological process, low in technical difficulty, high in yield and suitable for scale production and has important application prospects in the high-tech fields of magnetic recordingmaterials, magnetic sensor materials, photoelectric materials, integrated circuits, aero-engines and the like.

Description

technical field [0001] The invention belongs to the technical field of nickel material processing, and in particular relates to a short-process preparation method of high-purity nickel strip. [0002] technical background [0003] With the development of high technology, the preparation, characteristics and application of high-purity metals are new and growing fields in the field of modern materials science and engineering. As one of the important high-purity metal materials, high-purity nickel has a wide range of markets and applications. High-purity nickel is a matrix material for the preparation of high-purity reagents and standard samples. It can also be used in the preparation of magnetic recording materials, magnetic sensor materials, optoelectronic materials and integrated circuits, hydrogenation catalysis, atomic reactor protection materials, biological materials, aircraft engines, low High-tech fields such as expansion alloys. [0004] The invention patent with the...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21B1/22B21B45/00B22F3/15C21D8/02C22F1/10C22F1/02C21D1/26C21D1/74C21D9/00
CPCB21C37/02B21B1/22B21B45/004B22F3/15C21D8/0226C21D8/0236C22F1/10C22F1/02C21D1/26C21D1/74C21D9/0081B21B2001/221B21B2001/225B21B2261/20
Inventor 陈存广徐建勋
Owner 无锡市东杨新材料股份有限公司
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