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Copper alloy for power generator rotor slot wedge and machining process of copper alloy

A technology of generator rotor and processing technology, which is applied in the field of non-ferrous metal alloy materials and its processing technology, can solve the problems of low high temperature performance, achieve excellent performance, improve performance, 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

[0030] A copper alloy for a generator rotor slot wedge and a processing technology thereof comprising the following steps:

[0031] Melting → extrusion → cold deformation → aging → second cold deformation → second aging

[0032] A copper alloy for generator rotor slot wedges, which is composed of the following components by weight percentage: copper, nickel, silicon, chromium, cobalt, aluminum, magnesium, titanium; wherein nickel content is 2.125%, silicon content is 0.50%, chromium 0.70% content, 0.35% cobalt content, 0.20% aluminum content, 0.20% magnesium content, 0.10% titanium content; the total content of copper, nickel, silicon, chromium, cobalt, aluminum, magnesium, titanium and other elements is greater than 99.97%.

[0033] The smelting uses vacuum furnace equipment, the vacuum degree is less than 0.1Pa, argon is used as the protective gas, and the smelting temperature is 1250°C; the smelting raw materials are high-purity cathode copper, copper-nickel master alloy, c...

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Abstract

The invention discloses a copper alloy for generator rotor slot wedges and its processing technology. The copper alloy is composed of copper, nickel, silicon, chromium, cobalt, aluminum, magnesium, titanium, etc., and is smelted→extruded→cold deformed→aging → second cold deformation → second aging and other processing techniques; the technical solution provided by the present invention has excellent material properties and fully meets the requirements for the use of generator rotor slot wedges.

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 generator rotor slot wedges 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 690MP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/03C22F1/08
CPCC22C9/06C22C1/03C22F1/08
Inventor 徐高杰
Owner 徐高杰
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