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Method for preparing ultra-high-purity nickel strip by short process

A short-process, high-purity technology, used in metal rolling and other directions, can solve the problems of shortening the process flow, pollution, and low purity, and achieve the effect of shortening the process flow, reducing costs, and reducing the content of harmful elements

Inactive Publication Date: 2020-08-14
JIANGSU YUANHANG PRECISION ALLOY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims at the problems of high content of inclusions and low purity of domestically produced pure nickel strips, through direct rolling of high-grade electrolytic nickel plates, which shortens the process flow, reduces costs, and improves production efficiency, and is prepared by the preparation method of the present invention. Under the premise of ensuring good mechanical properties, the high-purity nickel strip not only effectively avoids the reduction of nickel strip qualification rate caused by inclusions brought in during the smelting process, but also ensures the purity of the material and improves the product qualification rate. Pollution problems caused by existing middle layer defects

Method used

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Examples

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Effect test

Embodiment 1

[0030] A method for preparing ultra-high-purity nickel strips in a short process, the steps are:

[0031] (1) Nickel plate processing: first clean the surface of the high-purity nickel plate with a thickness of 4mm until the surface is clean and free of foreign matter such as oil, and then machine the size of the high-purity nickel plate according to the size required by the rolling mill (width × length: 200mm × 600mm) And process an end face for welding in the length direction of the high-purity nickel plate, which is the processing surface of the nickel plate. Clean the processed surface of the nickel plate for later use.

[0032] (2) Plasma welding: the nickel plate processing surfaces of two high-purity nickel plates are welded and connected by plasma welding technology, and the length and width of the welded nickel plates should be suitable for rolling by specific strip equipment; the work of the plasma welding technology The parameters are: welding current 150A, welding...

Embodiment 2

[0040] A method for preparing ultra-high-purity nickel strips in a short process, the steps are:

[0041] (1) Nickel plate processing: first clean the surface of the high-purity nickel plate with a thickness of 6mm until the surface is clean and free of foreign matter such as oil, and then machine the size of the high-purity nickel plate according to the size required by the rolling mill (width × length: 240mm × 800mm) , and process an end face for welding in the length direction of the high-purity nickel plate, which is the processing surface of the nickel plate. Clean the processed surface of the nickel plate for later use.

[0042] (2) Plasma welding: The nickel plate processing surfaces of three high-purity nickel plates are welded and connected by plasma welding technology, and the length and width of the welded nickel plates should meet the rolling requirements of specific strip equipment; the work of the plasma welding technology The parameters are: welding current 200...

Embodiment 3

[0050] A method for preparing ultra-high-purity nickel strips in a short process, the steps are:

[0051] (1) Nickel plate processing: first clean the surface of the high-purity nickel plate with a thickness of 3mm until the surface is clean and free of foreign matter such as oil, and then machine the size of the high-purity nickel plate according to the size required by the rolling mill (width × length: 200mm × 600mm) , and process an end face for welding in the length direction of the high-purity nickel plate, which is the processing surface of the nickel plate. Clean the processed surface of the nickel plate for later use.

[0052] (2) Plasma welding: The nickel plate processing surfaces of three high-purity nickel plates are welded and connected by plasma welding technology, and the length and width of the welded nickel plates should meet the rolling requirements of specific strip equipment; the work of the plasma welding technology The parameters are: welding current 180...

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Abstract

The invention discloses a method for preparing an ultra-high-purity nickel strip by a short process. The method comprises the steps that a high-purity nickel plate is used as a raw material, the high-purity nickel plate is sequentially subjected to the process steps of nickel plate processing, plasma welding, hot rolling, ultrasonic flaw detection and cold rolling, and the ultra-high-purity nickelstrip is prepared. According to the method, in view of the problems of high inclusion content and low purity of a domestic pure nickel strip, through the direct rolling of a high-grade electrolytic nickel plate, the process flow is shortened, the cost is lowered, the production efficiency is improved, on the premise of ensuring good mechanical properties, the high-purity nickel strip prepared bythe method can effectively avoid the reduction of qualified rate of the nickel strip caused by inclusions brought into the smelting process, the purity of materials is ensured, the product qualification rate is increased, and moreover, the pollution problem caused by inherent interlayer defects of the electrolytic nickel plate is solved; and the method is particularly suitable for the demands of electronic and mechanical industries with high quality requirements for the pure nickel strip, and high practicability is achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of high-quality ultra-high-purity nickel metal strips, and more specifically, relates to a method for preparing ultra-high-purity nickel strips with a short process and low cost. Background technique [0002] Pure metallic nickel is one of the important strategic metals. It has excellent characteristics such as corrosion resistance, high temperature resistance, good shape, and high strength. It is widely used in aviation, aerospace, electronics, machinery, petrochemicals, electric vacuum devices and other fields. In recent years, the application field of pure nickel strip has been continuously expanded, and the demand has been continuously increased. However, in some special fields such as electronics and machinery, users only pay attention to the purity of metal nickel strip products (for example, the purity of metal nickel is required to be ≥ 99.99%) and the content of inclusions, and there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21B1/22B21B1/36C22F1/10C22F1/02
CPCB21C37/02B21B1/22B21B1/36C22F1/10C22F1/02B21B2001/225
Inventor 周林峰
Owner JIANGSU YUANHANG PRECISION ALLOY TECH
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