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A kind of preparation method of high surface quality, high strength nickel alloy strip

A high-strength, high-surface technology, used in metal rolling, manufacturing tools, heat treatment equipment, etc., can solve problems such as increased defective rate, low surface hardness, and little effect.

Active Publication Date: 2021-04-30
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

[0003] After complete recrystallization heat treatment, the nickel strip has low strength and is easily deformed during transportation and production, which has become a major problem in deep processing
At the same time, during the rolling process of nickel material, there will be high heating temperature, serious oxidation problems on the surface, and low surface hardness, which will cause the surface quality of the nickel strip to decline during the rolling process, resulting in an increase in the defective rate. Seriously affect the economic benefits of enterprises
At present, it has been reported that the strength and hardness of the nickel strip can be improved by solid solution strengthening of trace alloy elements, and the surface quality can be improved, but the effect is minimal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a high-surface-quality, high-strength nickel alloy strip, comprising the following steps

[0025] (1) Preparation of nickel-yttrium alloy billet: Pure nickel and pure yttrium metal raw materials are vacuumed to 2×10 -2 Melt in a vacuum induction melting furnace with Pa and temperature of 1453°C to melt and boil and refine for 1 minute. After refining, adjust the temperature of the vacuum induction melting furnace to 1250°C, add deoxidizer, refine for 10 minutes, and then pour the alloy melt Solidified into an alloy billet in a metal mold, the mass fraction of yttrium in the alloy is 0.02%;

[0026] (2) Billet preheating: Preheat the alloy billet above in an air heating furnace at a heating temperature of 800°C to generate Ni on the surface of the alloy 2 o 3 / Y 2 o 3 composite oxides;

[0027] (3) Hot rolling: the above-mentioned preheated billet is subjected to multi-pass hot rolling to form a plate of required thickness;

[0028] (4) Reduc...

Embodiment 2

[0035] A method for preparing a high-surface-quality, high-strength nickel alloy strip, comprising the following steps:

[0036] (1) Preparation of nickel-yttrium alloy billet: Pure nickel and pure yttrium metal raw materials are vacuumed to 2×10 -2 Melt in a vacuum induction melting furnace with Pa and temperature of 1430°C to the melt and boil and refine for 2 minutes. After refining, adjust the temperature of the vacuum induction melting furnace to 1200°C, add a deoxidizer, refine for 10 minutes, and then pour the alloy melt Solidified into an alloy billet in a metal mold, the mass fraction of yttrium in the alloy is 0.06%;

[0037] (2) Billet preheating: Preheat the above alloy billet in an air heating furnace at a heating temperature of 900°C to generate Ni on the surface of the alloy 2 o 3 / Y 2 o 3 composite oxides;

[0038] (3) Hot rolling: the above-mentioned preheated billet is subjected to multi-pass hot rolling to form a plate of required thickness;

[0039] (...

Embodiment 3

[0046] A method for preparing a high-surface-quality, high-strength nickel alloy strip, comprising the following steps:

[0047] (1) Preparation of nickel-yttrium alloy billet: Pure nickel and pure yttrium metal raw materials are vacuumed to 3×10 -2 Melt in a vacuum induction melting furnace with Pa and temperature of 1430°C to melt and boil and refine for 1 minute. After refining, adjust the temperature of the vacuum induction melting furnace to 1200°C, add deoxidizer, refine for 10 minutes, and then pour the alloy melt Solidified into an alloy billet in a metal mold, the mass fraction of yttrium in the alloy is 0.08%;

[0048] (2) Billet preheating: Preheat the alloy billet above in an air heating furnace at a heating temperature of 1100°C to generate Ni on the surface of the alloy 2 o 3 / Y 2 o 3 composite oxides;

[0049] (3) Hot rolling: the above-mentioned preheated billet is subjected to multi-pass hot rolling to form a plate of required thickness;

[0050] (4) Red...

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PUM

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Abstract

The invention belongs to the technical field of nickel strip processing, and in particular relates to a preparation method of a nickel alloy strip with high surface quality and high strength. In the invention, a deoxidizer is added during the refining process, and pure nickel and pure yttrium are vacuum melted and cast into a nickel-yttrium alloy billet, which is preheated in air and then hot-rolled to form Ni on the surface. 2 o 3 / Y 2 o 3 Composite oxides, Ni / Y after hydrogen reduction annealing 2 o 3 , cold-rolled into strips, when the nickel-yttrium alloy billet is preheated in the air, nano-yttrium oxide is formed on the surface, which can improve the surface hardness, matrix strength and high temperature oxidation resistance, and can improve the plate and strip during the hot / cold rolling process. Surface smoothness and surface precision, because the particle size of yttrium oxide is nano-scale, the content is very small (mass fraction <0.2%), and has little effect on the thermal and electrical conductivity of nickel materials. The prepared nickel alloy strip can simultaneously improve the strength, hardness and surface quality of the nickel strip, so as to meet the current market demand for the nickel alloy strip with high surface quality.

Description

technical field [0001] The invention belongs to the technical field of nickel material processing, and in particular relates to a method for preparing nickel alloy strips with high surface quality and high strength. Background technique [0002] Pure nickel has excellent mechanical properties, high corrosion resistance in various environments, magnetostriction and magnetism, high heat transfer, high electrical conductivity, low gas volume and low vapor pressure, etc. , has good spot welding performance, high tensile tension, low resistivity, mainly used in the manufacture of nickel-metal hydride batteries, lithium batteries, combined batteries and electric tools, communication information, special light bulbs and other industries. [0003] After complete recrystallization heat treatment, the nickel strip has low strength and is easily deformed during transportation and production, which has become a major problem in deep processing. At the same time, during the rolling proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C19/03C22F1/10C22F1/02C22C1/06C21D9/00B21B3/00
CPCB21B3/00C21D9/0081C22C1/023C22C1/06C22C19/03C22F1/02C22F1/10
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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