A kind of al-mg-si-cu-pr-nd rare earth aluminum alloy cable material and preparation method thereof

An aluminum alloy and rare earth technology, applied in the field of medium-strength rare earth aluminum alloy cable materials, to achieve the effects of improving tensile strength and elongation, excellent electrical conductivity, and reducing lattice distortion

Active Publication Date: 2018-08-21
CENT SOUTH UNIV +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide the above-mentioned medium-strength Al-Mg-Si-Cu-Pr-Nd rare earth aluminum alloy material to solve the matching problem of the electrical conductivity and mechanical properties of the existing cable aluminum conductors

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
  • A kind of al-mg-si-cu-pr-nd rare earth aluminum alloy cable material and preparation method thereof
  • A kind of al-mg-si-cu-pr-nd rare earth aluminum alloy cable material and preparation method thereof
  • A kind of al-mg-si-cu-pr-nd rare earth aluminum alloy cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036](1) Mg: 1.7wt%, Si: 1.2wt%, Cu: 2.4wt%, Pr: 0.5wt%, Nd: 0.6wt%, and the balance is Al according to the weight percentage of the constituent elements. The above materials are smelted at a high temperature in a smelting furnace at a temperature of 750°C until they are melted;

[0037] (2) Add refining agent (20wt%NaCl+20wt%KCl+35wt%NaF+25wt%LiF) according to the mass ratio of refining agent to smelting ingredients of 1:100 for degassing, then let stand for 10min;

[0038] (3) Pouring the alloy melt into a cylindrical mold in an electromagnetic stirring device, performing low-frequency electromagnetic stirring at 15 Hz for 30 s, and then water-cooling to become an ingot;

[0039] (4) Squeeze and draw the cast ingot, the extrusion temperature is 470°C, and the wire diameter after drawing is 6mm;

[0040] (5) Heat treatment (solid solution + aging) on ​​the wire after drawing: 530°C / 10h+165°C / 6h, heat treatment is used to prepare aluminum alloy cable materials.

Embodiment 2

[0042] (1) Mg: 1.8wt%, Si: 1.2wt%, Cu: 2.6wt%, Pr: 0.6wt%, Nd: 0.7wt%, and the balance is Al according to the weight percentage of the constituent elements. The above materials are smelted at a high temperature in a smelting furnace at a temperature of 760°C until they are melted;

[0043] (2) Add refining agent (20wt% NaCl+20wt% KCl+35wt% NaF+25wt% LiF) according to the mass ratio of refining agent and smelting ingredients in the ratio of 2:100 for degassing, then let it stand for 10 minutes;

[0044] (3) Pouring the alloy melt into a cylindrical mold in an electromagnetic stirring device, performing low-frequency electromagnetic stirring at 20 Hz for 30 s, and then water-cooling to become an ingot;

[0045] (4) Squeeze and draw the cast ingot, the extrusion temperature is 480°C, and the wire diameter after drawing is 6mm;

[0046] (5) Heat treatment (solid solution + aging) on ​​the wire after drawing: 540°C / 20h+170°C / 6h, heat treatment is used to prepare aluminum alloy cab...

Embodiment 3

[0048] (1) Mg: 1.9wt%, Si: 1.3wt%, Cu: 2.4wt%, Pr: 0.6wt%, Nd: 0.6wt%, and the balance is Al according to the weight percentage of the constituent elements. The above materials are smelted at a high temperature in a smelting furnace at a temperature of 770°C until they are melted;

[0049] (2) Add refining agent (20wt%NaCl+20wt%KCl+35wt%NaF+25wt%LiF) according to the mass ratio of refining agent to smelting ingredients of 1:100 for degassing, then let stand for 10min;

[0050] (3) Pouring the alloy melt into a cylindrical mold in an electromagnetic stirring device, performing low-frequency electromagnetic stirring at 25 Hz for 30 s, and then water-cooling to become an ingot;

[0051] (4) Squeeze and draw the cast ingot, the extrusion temperature is 490°C, and the wire diameter after drawing is 6mm;

[0052] (5) Heat treatment (solid solution + aging) on ​​the wire after drawing: 550°C / 22h+175°C / 6h, heat treatment is used to prepare aluminum alloy cable materials.

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
tensile strengthaaaaaaaaaa
sizeaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a novel medium-strength Al-Mg-Si-Cu-Pr-Nd rare earth aluminum alloy cable material. The cable material comprises Mg, Si, Cu, Pr and Nd, the content ratio of the added elements is M (Mg):M(Si):M(Cu)=(14-16):(10-11):(20-22),, all the elements can react within the range, strengthening phases beta''(Mg2Si), S'(Al2CuMg) and theta'(Al2Cu) are generated after aging, the added rare earth element content ratio is M(Pr):M(Nd)=1:1, a precipitated phase Al3(Pr,Nd) with a core-shell structure is precipitated through aging, and the alloy strength and conductivity are improved through cooperation between beta'', S' and theta'.

Description

technical field [0001] The invention relates to a medium-strength rare earth aluminum alloy cable material, in particular to a medium-strength Al-Mg-Si-Cu-Pr-Nd rare earth aluminum alloy cable material. Background technique [0002] The all-aluminum alloy overhead conductor is a kind of overhead conductor circuit with excellent performance that is widely promoted and applied at present. Al-Mg-Si alloys have low alloy density, high elongation, good corrosion resistance, good high temperature characteristics, good creep resistance and can be strengthened by heat treatment to obtain good comprehensive mechanical properties, so that it can be developed to meet all aspects Requirements, so compared to other series of overhead wires, Al-Mg-Si alloys are the most widely studied and most commonly used. [0003] With the extensive research of Al-Mg-Si alloys by the academic community, it was found that there is an opposite relationship between the tensile strength and electrical con...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/16C22C21/14C22C1/02
CPCC22C1/026C22C21/14C22C21/16
Inventor 王斌张嘉艺易丹青杨磊曾婉邓群华
Owner CENT SOUTH UNIV
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