Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of low-silver copper-lanthanum alloy for commutator and preparation method thereof

A commutator, silver-copper technology, applied in the field of high-quality copper alloy electrical materials and preparation, to achieve obvious market advantages and reduce material costs

Active Publication Date: 2017-06-16
JIANGXI KANGCHENG COPPER CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there have been no relevant patent reports using copper-lanthanum alloys containing low silver (Ag≤0.02%) as commutator materials

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 low-silver copper-lanthanum alloy for commutator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The low-silver copper-lanthanum alloy is configured according to the composition requirements of the present invention. A lanthanum-containing 30% copper-lanthanum master alloy is selected (considering the burnout rate of the master alloy is 10%); the selected cathode copper plate contains 99.95% copper. Weigh 99.58 kg of cathode copper plate, 0.02 kg of pure silver, and 0.45 kg of copper-lanthanum master alloy. When the power frequency induction furnace is heated up to 1140°C-1160°C, 90.18kg of electrolytic copper is added in turn, and pure silver is added after melting, and then 9.40kg of cathode copper plate inlaid with copper-lanthanum master alloy is pressed into the copper liquid; the surface of the copper liquid in the melting zone is Covered with charcoal, the casting area covered with graphite flakes. Repeat this until the liquid level in the furnace meets the requirements, stop feeding, remove slag, keep warm for about 1 hour, start continuous casting, and fe...

Embodiment 2

[0019] The low-silver copper-lanthanum alloy is configured according to the composition requirements of the present invention. A lanthanum-containing 30% copper-lanthanum master alloy is selected (considering the burnout rate of the master alloy is 10%); the selected cathode copper plate contains 99.95% copper. Weigh 99.28kg of cathode copper plate, 0.02kg of pure silver, and 0.74kg of copper-lanthanum master alloy. When the power frequency induction furnace heats up to 1140°C-1180°C, add 89.88kg of electrolytic copper in sequence, add pure silver after melting, and then press 9.40kg of cathode copper plate inlaid with copper-lanthanum master alloy into the copper liquid; the surface of the copper liquid in the melting zone Covered with charcoal, the casting area covered with graphite flakes. Repeat this until the liquid level in the furnace meets the requirements, stop feeding, remove slag, keep warm for about 1 hour, start continuous casting, and feed in time according to t...

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
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-quality copper alloy electrical material containing a low amount of silver and an appropriate amount of rare earth, which can replace conventional copper-silver alloys for a DC motor commutator, and a preparation method thereof. The rare earth-containing and low-silver electrical copper alloy involved in the present invention adopts a special smelting process to prepare the rod billet, and adopts the conventional "upward drawing continuous casting + continuous extrusion + high-precision cold drawing" method to form, and can produce different types and specifications of commutation The electrical and mechanical properties of special profiles for appliances are very close to those of conventional copper-silver alloys, and both can meet the requirements for use. The rare-earth-containing low-silver copper alloy can replace conventional silver-copper alloys, and is applied to manufacture commutators of various DC motors, with remarkable benefits and broad application prospects.

Description

technical field [0001] The invention provides a high-quality copper alloy electrical material containing low amounts of silver and lanthanum that can replace conventional copper-silver alloys for a DC motor commutator and a preparation method thereof, belonging to the technical field of new materials. [0002] technical background [0003] A commutator is a class of parts used in motors and generators to convert and conduct current. Except for the squirrel-cage induction motor, other motors must use a commutator. Therefore, the quality of the commutator directly affects the performance of the motor, and it is an important part of the motor. DC micro motors are indispensable electronic devices in the manufacturing of office automation equipment, audio-visual electronic equipment, communication equipment, automobiles and home appliances. The DC micro-motor uses a three-pole commutator to slide in contact with the brushes to realize power transmission and maintain the motor run...

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): C22C9/00B21C37/00
Inventor 徐恒雷杨卫良
Owner JIANGXI KANGCHENG COPPER CO LTD