Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-strength and medium-conductivity novel copper alloy Cu-Zn-Cr-RE conducting bar and preparation method

A technology of copper alloy and master alloy, which is applied in the field of motor rotor material manufacturing, can solve problems such as poor high-temperature strength, achieve high tensile strength, refine grain size, and improve high-temperature mechanical properties

Active Publication Date: 2017-03-22
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CuZn10 alloy is a single-phase solid solution alloy with adjustable resistance, but the disadvantage is poor high temperature strength

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength and medium-conductivity novel copper alloy Cu-Zn-Cr-RE conducting bar and preparation method
  • High-strength and medium-conductivity novel copper alloy Cu-Zn-Cr-RE conducting bar and preparation method
  • High-strength and medium-conductivity novel copper alloy Cu-Zn-Cr-RE conducting bar and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength, medium-conductivity new copper alloy Cu-10Zn-0.25Cr-0.08RE guide bar and its preparation method are characterized in that it includes the following steps:

[0027] (1) Ingredients: Proportion each alloy element according to the composition and ratio requirements, select and weigh the corresponding raw materials; Cu is added by copper plate, Zn is added by zinc ingot, and Cr is added by Cu-Cr intermediate alloy The RE is added in the form of La-Ce master alloy; wherein, the copper plate is an electrolytic copper plate with a purity greater than 99%. Wherein, the zinc ingot is commercially available No. 2 zinc with a purity greater than 99.95%.

[0028] (2) Melting: Melting in a non-vacuum intermediate frequency induction furnace. After the copper plate and Cu-Cr master alloy are melted, add zinc ingots, and then add La-Ce master alloy. After the smelting is completed, pour into ingots and cool to room temperature. Among them, the Cu-Cr master alloy is m...

Embodiment 2

[0032] A high-strength, medium-conductivity new copper alloy Cu-6Zn-0.3Cr-0.06RE guide bar and its preparation method are characterized in that it comprises the following steps:

[0033] (1) Ingredients: Proportion each alloy element according to the composition and ratio requirements, select and weigh the corresponding raw materials; Cu is added by copper plate, Zn is added by zinc ingot, and Cr is added by Cu-Cr intermediate alloy The RE is added in the form of La-Ce master alloy; wherein, the copper plate is an electrolytic copper plate with a purity greater than 99%. Wherein, the zinc ingot is commercially available No. 2 zinc with a purity greater than 99.95%.

[0034] (2) Melting: Melting in a non-vacuum intermediate frequency induction furnace. After the copper plate and Cu-Cr master alloy are melted, add zinc ingots, and then add La-Ce master alloy. After the smelting is completed, pour into ingots and cool to room temperature. Among them, the electrolytic copper plat...

Embodiment 3

[0038] A high-strength, medium-conductivity new copper alloy Cu-8Zn-0.3Cr-0.1RE guide bar and its preparation method are characterized in that it comprises the following steps:

[0039] (1) Ingredients: Proportion each alloy element according to the composition and ratio requirements, select and weigh the corresponding raw materials; Cu is added by copper plate, Zn is added by zinc ingot, and Cr is added by Cu-Cr intermediate alloy The RE is added in the form of La-Ce master alloy; wherein, the copper plate is an electrolytic copper plate with a purity greater than 99%. Wherein, the zinc ingot is commercially available No. 2 zinc with a purity greater than 99.95%.

[0040] (2) Melting: Melting in a non-vacuum intermediate frequency induction furnace. After the copper plate and Cu-Cr master alloy are melted, add zinc ingots, and then add La-Ce master alloy. After the smelting is completed, pour into ingots and cool to room temperature. Among them, the electrolytic copper plate...

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

No PUM Login to View More

Abstract

The invention discloses a high-strength and medium-conductivity novel copper alloy Cu-Zn-Cr-RE conducting bar and a preparation method. A Cu-Zn-Cr-RE alloy material is chemically composed of, by weight percentage, 0.25-0.35% of Cr, 6-10% of Zn, 0.05-0.15% of RE, 0-0.05% of Fe, 0-0.03% of Pb, and the balance copper. The copper alloy has high strength and stable electrical resistivity, and at the room temperature, Rm is greater than or equal to 330 MPa and A is greater than or equal to 15%; and the conductivity can be adjusted according to different Zn contents and is stable. Meanwhile, a dispersed Cr precipitated phase can improve the high temperature performance of the material, the rare earth element RE can remarkably refine grains and improve the strength, and at the temperature of 350 DEG C, Rm is greater than or equal to 280 MPa and A is greater than or equal to 8%. The conducting bar made of the material can meet the requirements of an asynchronous traction motor for the high rotating speed, high temperature and good stability, and especially can meet the requirement for good softening resistance performance at the temperature of 350 DEG C. The preparation process is simple, energy is saved, consumption is reduced, and manufacturing cost is lowered.

Description

technical field [0001] The invention relates to the technical field of motor rotor material manufacturing, in particular to a method for preparing a high-strength, medium-conductivity new copper alloy Cu-Zn-Cr-RE guide bar for an asynchronous traction motor rotor. Background technique [0002] With the development of rail transit and high-speed rail, the requirements for its traction power—asynchronous traction motors are getting higher and higher, and the motor rotor is the core component of asynchronous traction motors. At present, there are three manufacturing technologies for motor rotors. Cast aluminum rotors have high energy consumption and low efficiency. Cast copper technology is still in the research and development stage. Generally, the rotors of high-speed asynchronous traction motors are embedded in the iron core with guide bars and welded together with the end rings. Therefore, the performance and quality of the guide bar are directly related to the performance ...

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): C22C9/04C22C1/03C22F1/08
CPCC22C1/03C22C9/04C22F1/08
Inventor 马明月庾高峰张航武旭红王文斌
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com