Preparation method for particle reinforced copper-TiC high-intensity high-conductivity spot-welding electrode

A particle-reinforced, spot-welded electrode technology, applied in the scientific field of metal matrix composites, can solve the problems of difficult material quality control, low cost, poor conductivity, etc., and achieve good resistance to arc erosion, high resistance to electrical wear, and improved conductivity Effect

Inactive Publication Date: 2013-02-06
HENAN UNIV OF SCI & TECH
View PDF7 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems such as poor conductivity, high cost, difficult material quality control and low strength, the present invention provides a method for preparing a particle-reinforced copper-TiC high-strength and high-conductivity spot welding

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

preparation example Construction

[0022] A method for preparing a particle-reinforced copper-TiC high-strength and high-conductivity spot welding electrode, the preparation method comprising the following steps:

[0023] (1) Weigh industrial-grade Cu with a particle size of -200 mesh 2 O. Low solid solubility Cu-Al alloy with a particle size of -200 mesh and TiC powder with a particle size of less than 10 μm, in which Cu 2 O is used as an oxidant, and its dosage is 2.5% to 5% of the mass of the Cu-Al alloy, and the dosage of TiC powder is 5.7% to 19.22% of the total mass of the oxidant, Cu-Al alloy and TiC powder. The Cu-Al The aluminum content in the alloy is not more than 0.50wt%. The oxidant, Cu-Al alloy and TiC powder are mixed and then placed in a ball mill for ball milling. The speed used is 30rpm, and the ball milling time is 12~16h;

[0024] (2) Put the ball-milled mixed powder into a graphite mold, pre-press for 5 minutes under the condition of 30MPa, and take it out for later use;

[0025] (3) Put ...

Embodiment 1

[0032] The overall spot welding electrode material in this embodiment mainly contains Cu, Al, Ti, C and O elements, wherein Al and O exist in the form of the second phase of alumina, and its content: Al 2 o 3 , 0.84wt%; Ti and C exist in the form of titanium carbide reinforcement phase, its content: TiC, 5.7wt%; the balance is Cu.

[0033] The preparation process comprises the following steps:

[0034] (1) Weigh industrial-grade Cu with a particle size of -200 mesh 2 O is used as the oxidant, low solid-solubility Cu-Al alloy with a particle size of -200 mesh and TiC powder with a particle size of 5 μm. The oxidant is weighed according to the mass percentage of Cu-Al powder as 2.5%, and the TiC powder is weighed according to 5.7wt% of the total mass. Heavy, mix the three powders and place them in a QQM / B ball mill for ball milling at a speed of 30rpm, and mix them thoroughly for 14 hours to make them evenly mixed;

[0035] (2) Put the mixed powder into a graphite mold and pr...

Embodiment 2

[0039] The overall spot welding electrode material in this embodiment mainly contains Cu, Al, Ti, C and O elements, wherein Al and O exist in the form of the second phase of alumina, and its content: Al 2 o 3 , 0.95wt%; Ti and C exist in the form of titanium carbide reinforcement phase, its content: TiC, 19.22wt%; the balance is Cu.

[0040] The preparation process comprises the following steps:

[0041] (1) Weigh industrial-grade Cu with a particle size of -200 mesh 2 O is used as the oxidant, low solid-solubility Cu-Al alloy with a particle size of -200 mesh and TiC powder with a particle size of 3.2 μm. The oxidant is weighed as 3.7% of the mass percentage of Cu-Al powder, and the TiC powder is weighed as 19.22wt% of the total mass. Weigh, mix the three powders and place them in a QQM / B ball mill for ball milling at a rotating speed of 30 rpm, and mix them thoroughly for 12 hours to make them evenly mixed;

[0042] (2) Put the mixed powder into a graphite mold and press ...

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
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method for a particle reinforced copper-TiC high-intensity high-conductivity spot-welding electrode. The preparation method adopts the following components in percentage by mass: a low-solid solution Cu-Al alloy with aluminium content of not more than 0.50wt%; TiC powder with the particle size of less than 10mm and the content of 5.7wt% to 19.22wt% of the total mass; an oxidant with the content of 2.5 wt% to 5wt% of the mass of Cu-Al powder; and the balance of Cu. The preparation process of the preparation method comprises the following steps of: mixing the oxidant, the TiC powder and the Cu-Al alloy powder; carrying out internal oxidation; and carrying out cold (hot) extrusion (rolling) deformation, wherein the oxidant is industrial Cu2O, the sintering and the internal oxidation are synchronously carried out, the sintering temperature is 900 to 1,000 DEG C and the internal oxidation time is 2 to 6h. The dispersion copper spot-welding electrode prepared by the process method disclosed by the invention not only has a high wear resistance, a high intensity, a high conductivity and a high softening resistance temperature, but also has the advantages of short internal oxidation time, low cost and high efficiency.

Description

technical field [0001] The invention relates to the scientific and technical field of metal matrix composite materials, in particular to a method for preparing a particle-reinforced copper-TiC high-strength and high-conductivity spot welding electrode. Background technique [0002] High-strength and high-conductivity copper-based composites are a new type of functional material with excellent comprehensive properties. They not only have excellent electrical conductivity, but also have high strength and superior high-temperature performance. With the development of the electronics industry, especially in the late 1970s, the American SCM company developed the Glidcop series Al 2 o 3 After dispersion-strengthened Cu composite materials, high-strength and high-conductivity copper-based composite materials have been extremely active in the development and research of developed countries such as the United States and Japan, and have entered the practical stage. However, the rese...

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): B22F3/16C22C1/05C22C9/00C22C32/00
Inventor 刘勇田保红杨志强孙永伟杨雪瑞龙永强张毅贾淑果任凤章宋克兴
Owner HENAN UNIV OF SCI & TECH
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