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Copper alloy for turbine type generator rotor and processing technology of copper alloy

A steam turbine generator and processing technology, applied in the field of non-ferrous metal alloy materials and processing technology, can solve the problems of low high temperature performance, and achieve the effects of excellent performance, improved high temperature stability, and small size

Inactive Publication Date: 2017-11-24
徐高杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alloy has better performance at room temperature, its high temperature performance is lower than that of beryllium-cobalt-copper alloy materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of processing technology of copper alloy for steam turbine generator rotor comprises the following steps:

[0034] Melting→continuous extrusion→cold deformation→solution quenching→second cold deformation→cryogenic treatment→aging

[0035] The smelting adopts horizontal continuous casting or upward continuous casting, and the smelting temperature is 1200°C; the smelting raw materials are selected from high-purity cathode copper, copper-nickel master alloy, copper-silicon master alloy, copper-chromium master alloy, copper-zirconium master alloy, copper-niobium master alloy, etc. Master alloy, pure silver, pure magnesium.

[0036] The copper alloy contains copper, nickel, silicon, chromium, silver, magnesium, niobium and other elements; the nickel content is 1.8% to 2.0%, the silicon content is 0.40% to 0.50%, the chromium content is 0.60%, and the silver content is 0.10%. Magnesium content 0.10%, niobium content 0.05%;

[0037] The total content of the copper, ni...

Embodiment 2

[0043] A kind of processing technology of copper alloy for steam turbine generator rotor comprises the following steps:

[0044] Melting→continuous extrusion→cold deformation→solution quenching→second cold deformation→cryogenic treatment→aging

[0045] The smelting adopts horizontal continuous casting or upward continuous casting, and the smelting temperature is 1250°C; the smelting raw materials are high-purity cathode copper, copper-nickel master alloy, copper-silicon master alloy, copper-chromium master alloy, copper-zirconium master alloy, copper-niobium master alloy, etc. Master alloy, pure silver, pure magnesium.

[0046] The copper alloy contains copper, nickel, silicon, chromium, silver, magnesium, niobium and other elements; the nickel content is 2.1% to 2.5%, the silicon content is 0.51% to 0.60%, the chromium content is 0.80%, and the silver content is 0.20%. Magnesium content 0.20%, niobium content 0.10%;

[0047] The total content of the copper, nickel, silicon,...

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Abstract

The invention discloses a copper alloy for a steam turbine generator rotor and its processing technology. The copper alloy is composed of copper, nickel, silicon, chromium, silver, magnesium, niobium, etc., and is smelted→continuously extruded→cold deformed→solid solution Quenching→second cold deformation→cryogenic treatment→aging and other processing processes; the technical solution provided by the invention has excellent material properties and fully meets the requirements of the turbine generator rotor.

Description

technical field [0001] The invention relates to a non-ferrous metal alloy material and a processing technology thereof, in particular to a copper alloy for a steam turbine generator rotor and a processing technology thereof. Background technique [0002] The slot wedge is a part that fixes the stator bar in the generator slot. In order to improve the unbalanced operation capacity of the generator and ensure the safety and reliability of the generator load current when the temperature rises, the large generator requires that the slot wedge material must have a higher Electrical conductivity, while having high normal and high temperature mechanical properties. At present, most of the turbogenerator rotor wedge materials used by domestic large-scale turbogenerator manufacturers use beryllium-cobalt-copper alloy materials, and their chemical composition is: beryllium 0.045%-0.75%, cobalt 2.5%-2.7%, zirconium 0.2 -0.3%, at room temperature, its tensile strength is greater than 6...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/03C22F1/08B22D11/111B22D11/045B22D11/117B22D11/14
CPCC22C9/06B22D11/045B22D11/111B22D11/117B22D11/145C22C1/03C22F1/08
Inventor 徐高杰
Owner 徐高杰
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