Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

High-strength high-conductivity copper-chromium-zirconium alloy and preparation method of plate/strip thereof

A high-conductivity, copper-chromium-zirconium technology, which is applied in the field of lead frames, high-strength and high-conductivity copper-chromium-zirconium alloys and their strips, and connectors, can solve the problems of unsatisfactory comprehensive properties, achieve good elastic properties, and improve Strength, effect of inhibiting alloy cracking

Active Publication Date: 2016-05-11
NINGBO POWERWAY ALLOY PLATE & STRIP CO LTD
View PDF3 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

) strip products can achieve a yield strength of 400MPa, an electrical conductivity of about 80% IACS, and a softening temperature of about 500°C, but its comprehensive performance still cannot meet the current product requirements

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 high-conductivity copper-chromium-zirconium alloy and preparation method of plate/strip thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Below in conjunction with embodiment the present invention is described in further detail.

[0033] 20 example alloys and 1 comparative example alloy (C18150) were selected, all of which were processed into finished strip products with a thickness of 2.0 mm by the preparation method of the present invention. The process flow for preparing the high-strength and high-conductivity copper-chromium-zirconium alloy strip of the present invention is: batching→melting and casting→sawing→homogenizing annealing→hot rolling→primary solution treatment→face milling→primary cold rolling→second solution treatment→ Secondary cold rolling→primary aging treatment→tertiary cold rolling→secondary aging treatment→stretch leveling, which specifically includes the following steps:

[0034] 1) Batching and melting and casting: Prepare raw materials and batching according to the chemical composition of the alloy, and use an electric furnace for melting. The order of adding the alloy is: first a...

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
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-strength high-conductivity copper-chromium-zirconium alloy and a preparation method of a plate / strip thereof. This alloy comprises the chemical composition: 0.01-1.5 wt% of Cr, 0.01-0.5 wt% of Zr, 0.001-0.5 wt% of Ti, 0.01-0.5 wt% of Mn, 0.0001-0.07 wt% of Ca, and the balance of copper and unavoidable impurities; the position and process of the Cu-Cr-Zr alloy are optimized, the provided high-strength high-conductivity copper-chromium-zirconium alloy retains high conductivity (above 80% IACS), elastic modulus up to higher than 130 GPa, softening temperature resistance up to higher than 500 DEG C, yield strength up to higher than 550 MPa and hardness up to 160 HV, the copper-chromium-zirconium plate / strip is imparted high strength, high conductivity and excellent comprehensive performance, this comprehensive performance meets the requirements of products such as a lead frame and a connector upon base material stamping and machining performances, and this plate / strip material is mainly applied to electronic components such as connectors and lead frames.

Description

technical field [0001] The invention relates to the technical field of high-strength and high-conductivity copper alloys and their preparation, in particular to a method for preparing high-strength and high-conductivity copper-chromium-zirconium alloys and strips thereof, which are mainly used in lead frames, connectors, and the like. Background technique [0002] In recent years, with the continuous development of electronic technology, the application of connectors and lead frames in industries such as automobiles, electrical appliances, and communication base stations has become more and more attractive. The speed is getting faster and faster, and they are all developing in the direction of high density, miniaturization, thinning, combination, and high speed. [0003] Copper alloy materials for connectors are mainly selected from three categories: brass, phosphor bronze, and beryllium bronze according to their use environment and performance requirements. With the develo...

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): C22C9/00C22F1/08
CPCC22C9/00C22F1/08
Inventor 胡仁昌赵红彬周银银钟磊刘隆兵王继军廖学华
Owner NINGBO POWERWAY ALLOY PLATE & STRIP CO LTD
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
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