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

Making technology for Al2O3/Cu electrical contact material

A technology of electrical contact material and preparation process, which is applied in the direction of circuits, electric switches, electrical components, etc., can solve the problems of complex process, high process cost, and long preparation time, and achieve uniform distribution, simple and reliable process method, fine particle effect

Inactive Publication Date: 2007-09-12
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively complicated, the preparation time is long, and the process cost is high

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
  • Making technology for Al2O3/Cu electrical contact material
  • Making technology for Al2O3/Cu electrical contact material
  • Making technology for Al2O3/Cu electrical contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 1. Purchase Cu, Al metal powder and Cu with a particle size of 200 mesh 2 O powder

[0014] 2. Put Cu and Al metal powders into a ball mill for ball milling. The conditions that need to be met during ball milling are:

[0015] 1) The speed n≈0.82n of the ball mill is critical

[0016] no 临界 is the critical speed of the ball mill, in r / min.

[0017] Pick D is the inner diameter of the ball mill drum, in m.

[0018] 2) The amount of balls loaded in the drum of the ball mill during ball milling is

[0019] G 球 =γπD 2 L / 4, the unit is T

[0020] In the formula, γ is the density of the steel ball, and the unit is T / m 3 , take γ=4.7T / m 3

[0021]  is the filling coefficient of the ball mill:

[0022] For wet grid type ball mill=40%~45%

[0023] For dry grid type ball mill=25%~35%

[0024] For overflow ball mill=35%~40%

[0025] D is the inner diameter of the ball mill drum, in m

[0026] L is the length of the ball mill drum, in m.

[0027] 3) The amo...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to one kind of Al2O3 / Cu electricity contact material preparation craft, which belongs to the preparation electricity contact material technique. It includes the raw material preparation, interal oxidizing reaction, the suppression shape and agglutinates. Its characteristic is that the used raw material is Cu, Al and the Cu2O powder which can buy from the market, after put Cu and Al powder in the ball mill to ball grinding to achieve the melting, then join the Cu2O powder to continue ball grinding, render the Cu2O even distribution, the granularity to be thin. After puts the ball grinded alloy powder in the vacuum oven and carry on internal oxidation, then uses the mold to suppress shape, finally uses the cover embedding method to agglutinate in the ordinary resistancefurnace. The merit is: (1) the raw material may buy from the market; has omitted the complex atomization craft. (2) Use the ball mill to ball grinding the metal powder, render the metal powder to be thin and also even distribution, achieve to melting, may reduce the oxidized time, reduce the production cost.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of electrical contact materials, in particular to an Al 2 o 3 / Cu electrical contact material preparation process. Background technique [0002] Currently, the preparation of Al 2 o 3 The process method of / Cu electrical contact material mainly adopts the internal oxidation method, that is, the Cu-Al alloy powder is made by the atomization method first, and then the oxide powder is added to be oxidized in vacuum together, then pressed into shape, and then vacuum sintered to complete the preparation craft. The process is relatively complicated, the time required for preparation is long, and the process cost is high. Contents of the invention [0003] The purpose of the present invention is to provide a technical solution for preparing alloy powder by mechanical alloying, which can save internal oxidation time, simplify sintering method and reduce preparation cost without using co...

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 Applications(China)
IPC IPC(8): H01H11/04C22C1/00
Inventor 张代东马强郑建军宫长伟
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com