Preparation method of high-strength and high-conductivity copper alloy load switch knife

A load switch, copper alloy technology, applied in electrical switches, electrical components, circuits, etc., can solve the problems of low production efficiency and high cost, and achieve the effect of stable product performance and low cost

Active Publication Date: 2022-06-28
SIRUI ADVANCED COPPER ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of high electrical conductivity, medium strength, high temperature resistance or copper-tungsten alloy materials that cannot be simultaneously considered in

Method used

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  • Preparation method of high-strength and high-conductivity copper alloy load switch knife
  • Preparation method of high-strength and high-conductivity copper alloy load switch knife
  • Preparation method of high-strength and high-conductivity copper alloy load switch knife

Examples

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Example Embodiment

[0050] Example 1

[0051] A preparation method of a high-strength and high-conductivity copper alloy load switch knife, comprising the following steps:

[0052] S1. Raw material ratio:

[0053] By mass percentage, the raw materials include: Cr 0.05wt%, rare earth La 0.02wt%, and the balance is Cu; Cu includes three forms: sheet copper plate, long copper plate, copper skin;

[0054] S2. Electromagnetic stirring vacuum melting:

[0055] The feeding sequence is as follows: the sheet copper plate is placed at the bottom, the upper layer is added with long copper plates and placed evenly, the Cr block is wrapped with copper skin and placed in the middle of the copper plate, the rare earth La is wrapped with copper skin and added 5 minutes before being released;

[0056] A vacuum induction furnace is used for smelting and electromagnetic stirring for smelting, and the smelting temperature is controlled at 1150 ° C to obtain a uniform alloy solution; during the smelting process, ar...

Example Embodiment

[0076] Example 2

[0077] A preparation method of a high-strength and high-conductivity copper alloy load switch knife, comprising the following steps:

[0078] S1. Raw material ratio:

[0079] By mass percentage, the raw materials include: Cr 0.058wt%, rare earth La 0.03wt%, and the balance is Cu; Cu includes three forms: sheet copper plate, long copper plate, copper skin;

[0080] S2. Electromagnetic stirring vacuum melting:

[0081] The feeding sequence is as follows: the sheet copper plate is placed at the bottom, the upper layer is added with long copper plates and placed evenly, the Cr block is wrapped with copper skin and placed in the middle of the copper plate, the rare earth La is wrapped with copper skin and added 5 minutes before being released;

[0082] A vacuum induction furnace is used for smelting and electromagnetic stirring is used for smelting, and the smelting temperature is controlled at 1200 ° C to obtain a uniform alloy solution; during the smelting pr...

Example Embodiment

[0103] Example 3

[0104] A preparation method of a high-strength and high-conductivity copper alloy load switch knife, comprising the following steps:

[0105] S1. Raw material ratio:

[0106] By mass percentage, the raw materials include: Cr 0.2wt%, rare earth La 0.05wt%, and the balance is Cu; Cu includes three forms: sheet copper plate, long copper plate, copper skin;

[0107] S2. Electromagnetic stirring vacuum melting:

[0108] The feeding sequence is as follows: the sheet copper plate is placed at the bottom, the upper layer is added with long copper plates and placed evenly, the Cr block is wrapped with copper skin and placed in the middle of the copper plate, the rare earth La is wrapped with copper skin and added 5 minutes before being released;

[0109] A vacuum induction furnace is used for melting and electromagnetic stirring is used for melting, and the melting temperature is controlled at 1400 ° C to obtain a uniform alloy solution; during the melting process,...

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Abstract

The invention discloses a preparation method of a high-strength and high-conductivity copper alloy load switch knife, which is characterized by comprising the following steps: S1, proportioning raw materials; s2, electromagnetic stirring and vacuum melting; s3, casting is conducted; s4, hot extrusion; s5, solid solution treatment; s6, carrying out primary cold drawing; s7, aging treatment; s8, carrying out secondary cold drawing; s9, blanking and punching are carried out; s10, machining is carried out; and S11, surface treatment. The copper alloy load switch tool prepared by the method has the properties of high conductivity, high strength, high temperature resistance and the like; in addition, the preparation method of the copper alloy load switch knife is low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of load switch blade materials, in particular to a preparation method of a high-strength and high-conductivity copper alloy load switch blade. Background technique [0002] With the diversified development of the switch industry, new technologies and new processes continue to emerge, and at the same time, the user departments have higher and higher requirements for switch equipment, such as miniaturization, maintenance-free, environmental resistance, pollution resistance, and long life. Therefore, The requirements for the reliability of switchgear are gradually increasing. [0003] The load switch knife is the core component of the load switch of the ring main unit. At present, more than 90% of the load switch knives on the market are made of pure copper material. The pure copper material has a low softening temperature, is annealed after heating, has poor strength, and is not resistant to arc ablation. Dur...

Claims

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Application Information

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IPC IPC(8): B23P15/00C22C9/00C22F1/08C22C1/03H01H11/04
CPCB23P15/00C22C9/00C22F1/08C22F1/002C22C1/03H01H11/04Y02P10/25
Inventor 苟锁李潇杨亚明周斌孙小磊孙君鹏运海刘向东
Owner SIRUI ADVANCED COPPER ALLOY CO LTD
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