High-strength nickel-chromium-silicon-copper alloy material and processing technology thereof

A technology of silicon-copper alloy and processing technology, applied in the field of high-strength nickel-chromium-silicon-copper alloy material and its processing technology, can solve the problems of high cost of beryllium-cobalt-zirconium-copper alloy material, high price of cobalt metal, high toxicity, etc., and achieve mechanical High performance, environmental protection and low toxicity

Active Publication Date: 2011-06-29
SHENYANG XINGGONG COPPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this alloy has the following disadvantages: beryllium is highly toxic, and as long as there is one milligram of beryllium dust in every cubic meter of air, people will be infected with acute pneumonia-beryllium lung disease; beryllium and cobalt metals are expensive, so that The material cost of beryllium cobalt zirconium copper alloy is relatively high

Method used

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  • High-strength nickel-chromium-silicon-copper alloy material and processing technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1: Ni: 2.9%, Cr: 0.55%, Si: 0.7%, the total amount of impurities ≤ 0.3%, and the balance of Cu.

Embodiment 2

[0028] Example 2: Ni: 2.5%, Cr: 0.5%, Si: 0.5%, the total amount of impurities ≤ 0.3%, and the balance of Cu.

Embodiment 3

[0029] Embodiment 3: Ni: 2.1%, Cr: 0.7%, Si: 0.3%, the total amount of impurities ≤ 0.3%, and the balance of Cu.

[0030] Nickel can improve the mechanical properties and corrosion resistance of copper alloy materials, and has good electrical conductivity. Nickel and silicon can form a compound Ni 2 Si is soluble in copper; chromium, similar to nickel, can form chromium silicide, a compound soluble in solid copper with silicon, to strengthen the body; chromium is not easy to reduce the conductivity of copper, and can improve the mechanical properties of the material by precipitation hardening.

[0031] The embodiment of processing technique of the present invention is as follows:

[0032] Embodiment 1 (forged bar, specification 45*60*L):

[0033] 1. Casting

[0034] It adopts the semi-continuous casting method of industrial frequency electric furnace melting. Cu and Ni can be directly added into the furnace during melting and casting. Cr is pre-loaded into the copper tube in...

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Abstract

The invention relates to a copper alloy material and a processing technology thereof, in particular to a high-strength nickel-chromium-silicon-copper alloy material and a processing technology thereof. The alloy material has low toxicity and low cost. The alloy material comprises the following components by mass: 2.1-2.9% of Ni, 0.4-0.7% of Cr, 0.3-0.7% of Si, not more than 0.3% of total impurities and the balance of Cu. The processing technology comprises the steps of casting, press processing, high-temperature solution hardening and heat treatment, cold press processing, aging heat treatment and mechanical processing.

Description

Technical field: [0001] The invention relates to a copper alloy material and its processing technology, more specifically, to a high-strength nickel-chromium-silicon-copper alloy material and its processing technology. Background technique: [0002] At present, in order to improve the unbalanced operation capacity of the turbo-generator and ensure the safety and reliability of the unit after the temperature rise caused by the negative-sequence current of the generator, the large-scale generator manufacturers in my country must have certain requirements for the selected rotor wedge material. High electrical conductivity and high mechanical properties at room temperature and high temperature. [0003] For many years, most of the turbogenerator rotor slot wedge materials used by some large-scale turbogenerator unit manufacturers in China have adopted the alloy material proposed by the Westinghouse Power Generation Company in the technical conditions of the United States, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22F1/08B22D11/108B22D21/02
Inventor 白继明杨素娟王嗣杰李廷元
Owner SHENYANG XINGGONG COPPER IND
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