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

Beryllium-free high-strength copper alloy powder suitable for laser additive manufacturing and preparation method of beryllium-free high-strength copper alloy powder

A laser additive, copper alloy technology, applied in additive processing, metal processing equipment, transportation and packaging, etc., can solve the problems of low yield strength, limited tensile strength, etc., achieve high yield of fine powder, hollow The effect of low ball rate and increased strength

Pending Publication Date: 2021-06-08
安德伦(重庆)材料科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nominal composition (wt.%) of an existing Cu-Ni-Sn-based amplitude modulation decomposition alloy is 9.5-10.5Ni, 7.5-8.5Sn, 1.0Zn, and the rest is Cu (C96800); its yield strength is 680-820MPa , while its tensile strength is limited within 930MPa
Another option as copper beryllium alloy is aluminum bronze, an existing aluminum bronze has a nominal composition (wt.%) of 18Al, 14Mn, 3Fe, 2Ni, and the rest is Cu (ZCuAl18Mn14Fe3Ni2), and its yield strength is lower than 420MPa
The nominal composition (wt.%) of an existing aluminum brass is 25Zn, 6Al, 3Fe, 3Mn, and the rest is Cu (ZCuAl6Fe3Mn3), and its yield strength is limited within 450MPa

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
  • Beryllium-free high-strength copper alloy powder suitable for laser additive manufacturing and preparation method of beryllium-free high-strength copper alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. This embodiment provides a beryllium-free high-strength copper alloy, the composition of which is specifically: 24% Ni, 5% Sn, 2% Al, 1% Co, 0.5% Nb, 0.05% Ti, 0.75% V, 0.005% B, the balance is Cu.

[0052] 2, the copper alloy preparation process of the present embodiment is as follows:

[0053] Weigh the alloy element raw materials according to the above chemical composition ratio, put them into the melting crucible of the vacuum induction melting powder making furnace for vacuum melting, and obtain the copper alloy melt; use the infrared thermometer to measure the temperature of the melt, and heat the copper alloy liquid After reaching 1200-1300°C, heat-preserve and refine for 20-40 minutes; then fill the vacuum induction smelting powder-making furnace with 99.999% high-purity argon gas. The nozzle is impacted by the high-pressure and high-speed argon gas flow and broken into fine droplets, which are spheroidized while cooling and solidifying, and finally form sph...

Embodiment 2

[0068] 1. This embodiment provides a beryllium-free high-strength copper alloy, which is specifically composed by mass percentage: 20% Ni, 7% Sn, 1.5% Al, 0.5% Co, 0.2% Nb, 0.05% Ti, 0.6% V , 0.005% B, the balance is Cu.

[0069] 2, the copper alloy preparation process of the present embodiment is as follows:

[0070] Weigh the alloy element raw materials according to the above chemical composition ratio, put them into the melting crucible of the vacuum induction melting powder making furnace for vacuum melting, and obtain the copper alloy melt; use the infrared thermometer to measure the temperature of the melt, and heat the molten steel to 1200~1300℃, heat preservation and refining for 20~40min; then fill the vacuum induction smelting powder making furnace with 99.999% high-purity argon. It is crushed into fine droplets by the impact of high-pressure and high-speed argon gas flow, and spheroidizes while cooling and solidifying, and finally forms spherical metal powder.

[...

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
Fluidityaaaaaaaaaa
Bulk densityaaaaaaaaaa
Yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses beryllium-free high-strength copper alloy powder suitable for laser additive manufacturing and a preparation method of the beryllium-free high-strength copper alloy powder. The alloy powder comprises 20%-25% of Ni, 5%-8% of Sn, 1.5%-2.2% of Al, 0.5%-1.0% of Co, 0.2%-1.0% of Nb, 0.05%-0.15% of Ti, 0.5%-1.0% of V, 0.002%-0.006% of B and the balance Cu. Vacuum induction melting gas atomization preparation is adopted, the preparation process is designed and controlled, and finally, the alloy powder of 15-53 microns is prepared. The yield strength of copper alloy basically reaches the strength level of copper-beryllium alloy, the comprehensive performance of replacing the copper-beryllium alloy is met, and the beryllium-free copper alloy reduces damage to human health and pollution to the environment in the powder production and use process. According to the preparation method, the fine powder yield is high, and the prepared copper alloy powder has the characteristics of uniform chemical components, extremely low oxygen content, low hollow sphere rate, good fluidity and the like, and meets the performance requirements of the selective laser melting additive manufacturing technology on the copper alloy powder.

Description

technical field [0001] The invention belongs to the technical field of new metal materials for additive manufacturing, and more specifically relates to a beryllium-free high-strength copper alloy powder suitable for laser additive manufacturing and a preparation method thereof. Background technique [0002] Copper-beryllium alloy is a high-strength and high-conductivity copper-based alloy. Its yield strength can reach more than 960MPa, and its tensile strength can reach more than 1400MPa. It also has high hardness, wear resistance, corrosion resistance, low temperature resistance, fast heat dissipation, and non-magnetic properties. , high electrical conductivity, impact and no sparks and other comprehensive properties; widely used in aerospace bushings, bearing bushes, die-casting molds, mold inserts and other fields. But because metal beryllium (Be) is poisonous, and 1~2wt.% Be element is added in this kind of copper alloy, therefore can damage people's health during proces...

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): B22F1/00B22F9/08B33Y70/00C22C9/06
CPCB22F1/0003C22C9/06B22F9/082B33Y70/00B22F1/14
Inventor 谭建均应华
Owner 安德伦(重庆)材料科技有限公司
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