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Conductive rod for vacuum interrupter, processing method thereof, and vacuum interrupter

A technology of vacuum interrupter and processing method, which is applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems such as deformation, stagnation and bending of moving conductive rods that cannot be solved, and achieve safe cutting, increase service life, and low cost Effect

Active Publication Date: 2022-04-01
西安西电光电缆有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Its disadvantages are: the invention patent only improves the structure of the conductive rod, and does not involve the improvement of the material of the conductive rod itself, and still cannot solve the problems such as deformation, stagnation and bending of the conductive rod when the conductive rod is used at a higher frequency

Method used

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  • Conductive rod for vacuum interrupter, processing method thereof, and vacuum interrupter
  • Conductive rod for vacuum interrupter, processing method thereof, and vacuum interrupter
  • Conductive rod for vacuum interrupter, processing method thereof, and vacuum interrupter

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Embodiment 1

[0047] The formula is composed of the following components: Fe 5wt%, Mg 0.02wt%, La 0.02wt%, Ce 0.05wt%, and the balance is Cu.

[0048] Cleaning of the raw materials: Pickling the cathode copper and industrial pure iron, washing them with water, and drying them for later use. The cathode copper pickling solution adopts 30% volume concentration sulfuric acid, and the industrial pure iron pickling solution adopts 25% volume concentration hydrochloric acid.

[0049] The vacuum smelting: heating the crucible under low power, vacuuming and degassing, the vacuum degree reaches 1.0×10 -2 Stop pumping after Pa, fill Ar gas to 0.05MPa, and start smelting Cu; wait for Cu to completely melt and let it stand for 5 minutes, increase the power to smelt Fe until it is completely melted, then reduce the power and let it stand for 10 minutes, put CuMg50, CuLa40, CuCe40 in the middle Add the alloy into the melt; after the intermediate alloy is completely melted, increase the power to refine a...

Embodiment 2

[0058] The invention provides a processing method for a conductive rod used in a vacuum interrupter, and the processing method is as follows:

[0059] (1) Conductive rod composition: Fe 3.5%wt%, Mg 0.02wt%, La 0.02wt%, Ce 0.05wt%, and the balance is Cu.

[0060] (2) Cleaning: the cathode copper and industrial pure iron are pickled, washed with water and dried for later use. The cathode copper pickling solution adopts 30% volume concentration sulfuric acid, and the industrial pure iron pickling solution adopts 25% volume concentration hydrochloric acid.

[0061] (3) Melting: Heating the crucible under low power, vacuuming and degassing, the vacuum degree reaches 1.0×10 -2 Stop pumping after Pa, fill Ar gas to 0.05MPa, and start smelting Cu; wait for Cu to completely melt and let it stand for 5 minutes, increase the power to smelt Fe until it is completely melted, then reduce the power and let it stand for 10 minutes, put CuMg50, CuLa40, CuCe40 in the middle Add the alloy into...

Embodiment 3

[0068] The invention provides a processing method for a conductive rod used in a vacuum interrupter, and the processing method is as follows:

[0069] (1) Conductive rod composition: Fe 6.5wt%, Mg 0.15wt%, La 0.02wt%, Ce 0.05wt%, and the balance is Cu.

[0070] (2) Cleaning: the cathode copper and industrial pure iron are pickled, washed with water and dried for later use. The cathode copper pickling solution adopts 30% volume concentration sulfuric acid, and the industrial pure iron pickling solution adopts 25% volume concentration hydrochloric acid.

[0071] (3) Melting: Heating the crucible under low power, vacuuming and degassing, the vacuum degree reaches 1.0×10 -2 Stop pumping after Pa, fill Ar gas to 0.05MPa, and start smelting Cu; wait for Cu to completely melt and let it stand for 5 minutes, increase the power to smelt Fe until it is completely melted, then reduce the power and let it stand for 10 minutes, put CuMg50, CuLa40, CuCe40 in the middle Add the alloy into ...

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Abstract

The invention discloses a conductive rod for a vacuum interrupter, a processing method thereof and a vacuum interrupter. The components of the conductive rod are: Fe 3.5%-6.5wt%, Mg 0.02-0.15wt%, La 0.02wt%, Ce 0.05wt% %, the balance is Cu. The processing method is made of Cu-Fe alloy, which is low in cost and rich in raw materials. After solid solution strengthening, aging strengthening, fine grain strengthening and deformation strengthening, the Brinell hardness is not less than 75HB, and the tensile strength is not less than 580MPa. The electrical conductivity is not less than 80% IACS, which fully meets the requirements of the conductive rod used in the vacuum interrupter, improves the service life of the conductive rod, and can quickly, reliably and safely cut off the power supply during use.

Description

technical field [0001] The invention relates to the field of vacuum interrupters, in particular to a conductive rod for a vacuum interrupter, a processing method thereof, and a vacuum interrupter. Background technique [0002] Vacuum interrupter, also called vacuum switch tube or vacuum bubble, is the core device of vacuum switch. It uses a pair of electrodes (contacts) and other parts sealed in a vacuum to realize the closing or breaking of the circuit with the help of the excellent insulation and arc extinguishing performance of the vacuum. After cutting off the power supply, it can quickly extinguish the arc and suppress the current vacuum. device. The vacuum interrupter is mainly composed of an airtight insulation system, a conductive system, a shielding system, and a contact system. The conductive system mainly plays the role of conducting current, including dynamic and static conductive rods. At present, the conductive rod is made of oxygen-free copper. [0003] How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08C21D1/26C21D8/06H01H33/664
CPCC22C9/00C22C1/03C22F1/08C21D1/26C21D8/06H01H33/664
Inventor 曹默薛恒张超陈明星
Owner 西安西电光电缆有限责任公司
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