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A kind of manufacturing method of chrome bronze material for isolating switch contacts

A technology for isolating switches and manufacturing methods, which is applied in the field of manufacturing conductive materials for isolating switches, can solve the problems of Cu-Cr isolating switch contacts oxidation, heating and softening, etc., and achieve the effects of low operating cost, enhanced cooling effect, and wide application range

Active Publication Date: 2020-04-28
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is an urgent need for a new material to solve the problems of oxidation, heat softening and other problems in the use of Cu-Cr isolating switch contacts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A method for manufacturing a chromium bronze material for a contact piece of a disconnector, the chemical composition and weight percentage of the chromium bronze material are: Cr: 0.4%, Al: 0.1%, Mg: 0.1%, Cu: balance The preparation method of described chromium bronze material comprises the following steps:

[0025] 1) According to the composition requirements of the chrome bronze material, the ratio of each alloy element is selected and weighed; Mg is added in the form of Cu-Mg master alloy, Cr is added in the form of Cu-Cr master alloy, and Cu is made of electrolytic copper plate and master alloy Al is added by way of pure material block;

[0026] 2) Smelting is carried out according to the ratio of each element and their specific addition methods. The smelting equipment adopts a vacuum intermediate frequency induction furnace, and the ingots of the required specifications are obtained by pouring; the smelting process is the smelting of the copper plat...

Embodiment 2

[0033] Embodiment 2: A method for manufacturing a chromium bronze material for a contact piece of a disconnector, the chemical composition and weight percentage of the chromium bronze material are: Cr: 0.8%, Al: 0.2%, Mg: 0.2%, Cu: balance The preparation method of described chromium bronze material comprises the following steps:

[0034] 1) According to the composition requirements of the chrome bronze material, the ratio of each alloy element is selected and weighed; Mg is added in the form of Cu-Mg master alloy, Cr is added in the form of Cu-Cr master alloy, and Cu is made of electrolytic copper plate and master alloy Al is added by way of pure material block;

[0035] 2) Smelting is carried out according to the ratio of each element and their specific addition methods. The smelting equipment adopts a vacuum intermediate frequency induction furnace, and the ingots of the required specifications are obtained by pouring; the smelting process is the smelting of the copper plat...

Embodiment 3

[0042] Embodiment 3: A method for manufacturing a chromium bronze material for a contact piece of a disconnector, the chemical composition and weight percentage of the chromium bronze material are: Cr: 1.0%, Al: 0.3%, Mg: 0.3%, Cu: balance The preparation method of described chromium bronze material comprises the following steps:

[0043]1) According to the composition requirements of the chrome bronze material, the ratio of each alloy element is selected and weighed; Mg is added in the form of Cu-Mg master alloy, Cr is added in the form of Cu-Cr master alloy, and Cu is made of electrolytic copper plate and master alloy Al is added by way of pure material block;

[0044] 2) Smelting is carried out according to the ratio of each element and their specific addition methods. The smelting equipment adopts a vacuum intermediate frequency induction furnace, and the ingots of the required specifications are obtained by pouring; the smelting process is the smelting of the copper plate...

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Abstract

The invention discloses a preparing method of a chromium bronze material for a disconnecting switch wafer. The chemical composition of the chromium bronze material comprises, by weight, 0.4-1.0% of Cr, 0.1-0.3% of Al, 0.1-0.3% of Mg and the balance Cu. The preparing method of the chromium bronze material includes the following steps of firstly, preparing the materials; secondly, conducting smelting; thirdly, conducting extruding and cooling to obtain a round bar profile for rolling an alloy wafer; fourthly, conducting rolling; fifthly, conducting drawing for cold deformation; sixthly, conducting ageing treatment; seventhly, conducting sizing and sawing off processing. The obtained disconnecting switch wafer has high conductivity larger than or equal to 60% IACS at 20 DEG C, high hardness HB larger than or equal to 130, high tensile strength Rm larger than or equal to 480 Mpa and high oxidization resistance. By means of the disconnecting switch wafer, the failures of oxidization, heating, softening and the like during use of a disconnecting switch are solved; meanwhile, the method is simple in preparing process, saves energy and reduces consumption.

Description

technical field [0001] The invention relates to the technical field of manufacturing conductive materials of a disconnector, in particular to a method for manufacturing a chrome bronze material for contact pieces of a disconnector. Background technique [0002] High-voltage isolating switch is an important part of the power grid, and it is also one of the key equipment related to the safe and stable operation of the power grid. It plays a role in isolating live running equipment and electrical equipment, busbars or lines in a power failure maintenance or standby state in the power system. It uses the visibility of its fracture and its reliable insulation capacity to form an obvious disconnection point to ensure safe operation. Reliability and safety of maintenance operators. At the same time, it can also cooperate with the circuit breaker, which can easily change the operation mode of the system. [0003] The contact piece of the isolating switch is the core component of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C9/00C22F1/08
CPCC22C1/02C22C9/00C22F1/08
Inventor 王聪利庾高峰张航
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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