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Copper alloy conductive screw for nuclear power and preparation method thereof

A conductive screw and copper alloy technology, applied in the direction of metal/alloy conductors, conductive materials, conductive materials, etc., can solve the problems of insufficient core strength and stricter core strength requirements in the nuclear power industry, and achieve high hardness and high The effect of strength and high conductivity

Inactive Publication Date: 2016-09-28
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, copper alloys have been widely used in machinery, light industry, clocks and watches and other departments. Although ordinary copper alloy conductive screws have good conductivity, although the surface strength is high, the core strength is not enough, so they cannot be used for Nuclear power industry with stricter core strength requirements

Method used

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  • Copper alloy conductive screw for nuclear power and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0021] Based on the percentage content of the total weight of the copper-zirconium alloy: zirconium accounts for 0.15%, copper accounts for 99.82%, and the impurity content is 0.03%.

[0022] Preparation method: put copper and zirconium in a vacuum melting furnace, and after melting at 1220°C, cast them into alloy ingots; hot forging (heating temperature 950°C, holding time 3 hours), solid solution ( Heating temperature 940°C, holding time 80 minutes), secondary forging (heating temperature 480°C, holding time 2 hours, deformation 45%), aging (heating temperature 440°C, holding time 3 hours) treatment process, made About 177kg heavy copper zirconium alloy rod.

Embodiment 2

[0024] Based on the percentage of the total weight of the copper-zirconium alloy: zirconium accounts for 0.18%, copper accounts for 99.80%, and the impurity content is 0.02%.

[0025] Preparation method: put copper and zirconium in a vacuum melting furnace, and after melting at 1280°C, cast them into alloy ingots; hot forging (heating temperature 970°C, holding time 1.5 hours), solid solution ( Heating temperature 950°C, holding time 75 minutes), secondary forging (heating temperature 500°C, holding time 1 hour, deformation 40%), aging (heating temperature 420°C, holding time 5 hours) treatment process, made About 177kg heavy copper zirconium alloy rod.

Embodiment 3

[0027] Based on the percentage content of the total weight of the copper-zirconium alloy: zirconium accounts for 0.20%, copper accounts for 99.78%, and the impurity content is 0.02%.

[0028] Preparation method: put copper and zirconium in a vacuum melting furnace, and after melting at 1250°C, cast them into alloy ingots; hot forging (heating temperature 930°C, holding time 3 hours), solid solution ( Heating temperature 960°C, holding time 30 minutes), secondary forging (heating temperature 440°C, holding time 4 hours, deformation 35%), aging (heating temperature 400°C, holding time 6 hours) treatment process, made About 177kg heavy copper zirconium alloy rod.

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Abstract

The invention relates to a copper alloy conductive screw for nuclear power and a preparation method thereof. Based on the percentage of the total weight of the alloy, zirconium accounts for 0.14-0.22%, zirconium+copper≥99.97%, and impurity content≤0.03%. The copper-zirconium alloy conductive screw provided by the invention is used in the field of nuclear power steam turbine half-speed generators, has high core strength and hardness, and can meet the stricter quality requirements of the nuclear power industry.

Description

technical field [0001] The invention relates to a copper alloy conductive screw for nuclear power and a preparation method thereof. Background technique [0002] At present, copper alloys have been widely used in machinery, light industry, clocks and watches and other departments. Although ordinary copper alloy conductive screws have good conductivity, although the surface strength is high, the core strength is not enough, so they cannot be used for Core strength requirements are more stringent for the nuclear power industry. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a copper-zirconium alloy as a conductive screw and a preparation method thereof, which can be applied in the field of nuclear power steam turbine half-speed generators, and has high core strength and hardness, and high electrical conductivity. The technical scheme of the present invention to solve the above-mentioned technical problems is as f...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08H01B1/02
CPCC22C9/00C22F1/08H01B1/026
Inventor 董延春周舟李景霍岩侯世璞吴双辉丁军锋
Owner HARBIN ELECTRIC MASCH CO LTD
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