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Preparation technology of copper alloy for short process slot wedge

A preparation process and copper alloy technology, which are applied in the field of preparation technology of copper alloy for short-flow slot wedges, can solve the problems of low high temperature performance and the like, and achieve the effects of excellent performance, promoting strength and improving efficiency

Inactive Publication Date: 2018-01-09
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

[0028] A preparation process of a copper alloy for a short flow slot wedge comprises the following steps:

[0029] Upward continuous casting→continuous extrusion→solution quenching→cold deformation→cryogenic treatment→aging

[0030]The above-mentioned upward continuous casting adopts a three-piece smelting equipment, and the smelting equipment includes a melting furnace, a holding furnace, and a compartment; the melting furnace, the compartment, and the holding furnace are connected by a flow ditch, and the flow ditch is 200 mm above the bottom of the furnace. , can promote the uniformity of copper liquid flow, can play the effect of slag removal; In the described compartment, on-line degassing device is installed, fills 99.996% argon in the copper liquid by on-line degassing device, and passes through The controlled rotating graphite shaft and rotor inject the metered argon into the copper liquid and break it up into tiny bubbles, so that they can be evenly dispersed in the c...

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Abstract

The invention discloses a preparation process of a copper alloy for short-flow slot wedges, which adopts the preparation processes of upward continuous casting→continuous extrusion→solution quenching→cold deformation→cryogenic treatment→aging; the copper alloy is composed of copper, nickel, silicon , chromium, silver, magnesium and other components, the technical solution provided by the invention, the obtained material performance is excellent, fully meet the use requirements of the turbine generator rotor slot wedge.

Description

technical field [0001] The invention relates to a non-ferrous metal alloy material and a preparation process, in particular to a preparation process of a copper alloy for short-flow slot wedges. 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 690MPa, yield strength greater ...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/02B22D11/00C22F1/08
Inventor 徐高杰
Owner 徐高杰
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