Slot wedge material for steam turbine generator rotor and machining technology of slot wedge material

A technology of turbo generator and slot wedge material, which is applied in the field of slot wedge material for turbo generator rotor and its processing technology, can solve the problems of low high temperature performance, etc., and achieve the effects of excellent performance, large quantity, and enhanced strength

Inactive Publication Date: 2017-12-22
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 temper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A processing technology for a slot wedge material for a turbogenerator rotor comprises the following steps:

[0033]Vacuum melting→water seal extrusion→cold deformation→aging→solution quenching→second cold deformation→cryogenic treatment→second aging

[0034] In the vacuum smelting process, the vacuum degree is less than 0.1Pa, argon is used as the protective gas, and the melting temperature is 1200°C; the smelting raw materials are high-purity cathode copper, copper-nickel master alloy, copper-silicon master alloy, copper-chromium master alloy alloy, copper-zirconium master alloy, copper-niobium master alloy, pure silver, pure magnesium.

[0035] The nickel content is 1.8%-2.0%, the silicon content is 0.45%-0.50%, the chromium content is 0.60%-0.70%, the zirconium content is 0.08%-0.09%, the silver content is 0.16%, the magnesium content is 0.16%, and the niobium content is 0.08%;

[0036] The total content of copper, nickel, silicon, chromium, zirconium, silver, magn...

Embodiment 2

[0046] A processing technology for a slot wedge material for a turbogenerator rotor comprises the following steps:

[0047] Vacuum melting→water seal extrusion→cold deformation→aging→solution quenching→second cold deformation→cryogenic treatment→second aging

[0048] Nickel content 2.1% ~ 2.5%, silicon content 0.51% ~ 0.60%, chromium content 0.71% ~ 0.80%, zirconium content 0.09% ~ 0.10%, silver content 0.20%, magnesium content 0.20%, niobium content 0.10%; copper, nickel , silicon, chromium, zirconium, silver, magnesium, niobium and other elements are greater than 99.97%, the ratio of nickel content to silicon content is 4.15:1; the ratio of chromium content to zirconium content is 8:1; silver content, The ratio of magnesium content to niobium content is 2:2:1.

[0049] In the vacuum smelting process, the vacuum degree is less than 0.1Pa, argon is used as the protective gas, and the melting temperature is 1250°C; the smelting raw materials are high-purity cathode copper, cop...

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PUM

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Abstract

The invention discloses a slot wedge material for a steam turbine generator rotor and its processing technology. The copper alloy is composed of copper, nickel, silicon, chromium, zirconium, silver, magnesium, niobium, etc., and is vacuum smelted → water-sealed extrusion → Cold deformation→aging→solution quenching→second cold deformation→cryogenic treatment→second aging and other processing processes; the technical solution provided by the invention, the obtained material has excellent performance and fully meets the use 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 slot wedge material 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...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22F1/08
CPCC22C9/06C22F1/08
Inventor 徐高杰
Owner 徐高杰
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