High-strength and high-conductivity copper alloy for power switch spring contact and preparation method of high-strength and high-conductivity copper alloy

A spring contact and power switch technology, applied in the field of metal alloy materials and their preparation, can solve the problems of Be element toxicity, pollution, and damage to the health of operators, and achieve good electrical and mechanical properties

Active Publication Date: 2013-10-16
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the toxicity of the Be element: only one milligram of beryllium powder in every cubic meter of air will cause people to contract acute pneumonia - beryllium lung disease, wh

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example one

[0027] Put the steel mold into the resistance furnace and bake it at 800°C for 15 minutes, then put it into the vacuum melting furnace. Weigh 11.456kg of Cu-CATH-1 block, 0.36kg of Cu-Cr master alloy block with 30% Cr mass fraction, put it in a spinel ceramic crucible, mix and melt at 1350℃, and weigh 0.04kg of Cu-P For the master alloy, remove the oxygen in the alloy melt, and sequentially put 0.024kg of sponge Zr and 0.16kg of Cu-Ti master alloy with 5% Ti mass fraction into the alloy hopper into the vacuum melting furnace, and the vacuum melting furnace is pumped Vacuum to 3.0Pa, temperature rise to 1350℃ and keep for 14min. Cast into a steel mold at 1250°C and cool to room temperature to obtain CuCrZrTi alloy material. Then, the obtained alloy material is hot-extruded at 860°C, extruded into a bar, and then subjected to cold working and water-cooled intermediate annealing, the annealed bar is heated to 450°C, and subjected to vacuum aging heat treatment...

Example Embodiment

[0028] Example two

[0029] Put the steel mold into a resistance furnace and bake at a constant temperature of 820°C for 13 minutes, then put it into a vacuum melting furnace. Weigh 11.464kg of Cu-CATH-1 block, 0.33kg of Cu-Cr master alloy block with 30% Cr mass fraction, put it in a spinel ceramic crucible and mix and melt at 1380℃, and weighed 0.04kg Cu- P master alloy, remove the oxygen inside the alloy melt, sequentially put 0.0216kg sponge Zr and 0.144kg Ti Cu-Ti master alloy with a mass fraction of 5% into the alloy hopper and put it into the vacuum melting furnace, and the vacuum melting furnace is evacuated To 6.3Pa, the temperature rises to 1380℃ and keeps for 14min. Cast into a steel mold at 1260°C and cool to room temperature to obtain CuCrZrTi alloy material. Then, the prepared alloy material is hot-extruded at 850°C, extruded into a bar, and then subjected to cold working and water-cooled intermediate annealing, the annealed bar is heated to 500°C, and subjected to...

Example Embodiment

[0030] Example three

[0031] Put the steel mold into the resistance furnace and bake it at a constant temperature of 850°C for 12 minutes, carefully coat the inner wall of the steel mold with a layer of high temperature resistant casting paint, and put it into the vacuum melting furnace. Weigh 11.517kg of Cu-CATH-1 block, 0.345kg of Cu-Cr master alloy block with 30% Cr mass fraction, put it in a spinel ceramic crucible, mix and melt at 1400℃, and weigh 0.04kg Cu-P For master alloy, remove oxygen from the alloy melt, and sequentially put 0.018kg sponge Zr and 0.08kg Cu-Ti master alloy with 5% Ti mass fraction into the alloy hopper and add it to the vacuum melting furnace, and the vacuum melting furnace is evacuated To 6.3Pa, when the temperature rises to 1400℃, keep it for 10min. Cast into a steel mold at 1300°C and cool to room temperature to obtain CuCrZrTi alloy material. Then, the obtained alloy material is hot-extruded at 880°C, extruded into a bar, and then subjected to c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a CuCrZrTi alloy and a preparation method thereof, and aims at providing a novel high-strength and high-conductivity copper alloy material capable of replacing CuCo2Be and a preparation method of the novel copper alloy material. The alloy comprises the following metals by weight percentage: 0.5-1.2% of Cr, 0.03-0.3% of Zr, 0-0.1% of Ti and the balance of Cu and unavoidable impurities. The raw materials are subjected to vacuum melting, alloying, cast ingot casting, hot extrusion, cold processing, intermediate annealing, vacuum aging heat treatment and machining to form the alloy. The prepared copper alloy has good electrical and mechanical properties, is non-magnetic, resists low temperature, is free from sparks during impact, can replace the CuCo2Be material, and avoids environmental pollution during manufacturing of a toxic element Be and operation of an electric field, and since the prepared copper alloy has the better electrical properties, the commercial application and popularization of the spring contact are more competitive.

Description

technical field [0001] The invention relates to a metal alloy material and a preparation method thereof, in particular to a CuCrZrTi alloy and a preparation method thereof. Background technique [0002] In recent years, spring contacts with simple structure and reliable performance have been widely used in power switches. Spring contacts can not only simplify the electrical contact design of power switches, but also improve the reliability of electrical contacts. Therefore, in related The industry has received extensive attention and promotion. [0003] As the core of spring contacts, the selection of copper alloy materials is related to the stability and reliability of power switches and power stations, and is the most critical link in the design and production of spring contacts. Because of its high strength, elasticity and moderate electrical conductivity, CuCo2Be alloy has been commercially applied and promoted as a material for spring contacts of power switches. Howev...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C9/00C22C1/03C22F1/08
Inventor 张航王文斌武旭红吴斌刘凯
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap