High-hardness zinc-copper-aluminum alloy

A technology of high hardness and aluminum alloy, which is applied in the field of zinc-copper-aluminum alloy with high hardness in mass ratio, can solve the problems of affecting alloy performance, large raw material burning loss, and reduced impact toughness at room temperature, so as to improve hardness and wear resistance and reduce preparation cost effect

Active Publication Date: 2020-12-11
CHANGZHOU UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, it uses Al, Zn, and Cu as raw materials for direct melting, and the melting points of Al, Zn, and Cu components are quite different. This melting method will cause large burning loss of raw materials and affect the properties of the alloy.
The room temperature impact toughness of the alloy is not studied in it, because the increase in hardness often leads to a significant decrease in room temperature impact toughness

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-hardness zinc-copper-aluminum alloy
  • High-hardness zinc-copper-aluminum alloy
  • High-hardness zinc-copper-aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0022] 1. Preparation of zinc-copper-aluminum alloy 33.3Zn-33.3Cu-33.3Al with equal mass ratio

[0023] First, put 60g of industrial pure zinc and 120g of Al-50Cu master alloy into a graphite crucible and heat and melt in a well-type electric furnace. The melting temperature is 750°C. After it is completely melted, stir it, let it stand for 5 minutes, and add refining agent C 2 Cl 6 , the amount of refining agent added is 0.3% of the total charge, and then stand still for 30 minutes, carry out slag removal, casting, and naturally cool to room temperature after casting to obtain 33.3Zn-33.3Cu-33.3Al zinc-copper-aluminum alloy.

[0024] figure 1 It is the microstructure of zinc-copper-aluminum alloy with equal mass ratio, and the microstructure of the alloy consists of Zn phase, Al phase, Al phase 2 Composition of Cu phase and Al4.2Cu3.2Zn0.7. It can be seen from the microstructure that there is no obvious segregation of alloy elements in the microstructure of the alloy, and t...

Embodiment example 2

[0028] 1. Preparation of 32Zn-32Cu-36Al alloy

[0029] First, put 64g of industrial pure zinc, 8g of industrial pure aluminum and 128g of Al-50Cu into a graphite crucible and heat and melt in a well-type electric furnace. The melting temperature is 750°C. Refining agent, let it stand still for 30 minutes, carry out slag removal, casting, and naturally cool to room temperature after casting. The 32Zn-32Cu-36Al alloy of the present invention is obtained. figure 2 It is the microstructure of 32Zn-32Cu-36Al alloy.

[0030] 2. Mechanical properties of 32Zn-32Cu-36Al alloy

[0031] The impact sample adopts a cylindrical sample, Figure 5 Dimensions of impact specimens for die-cast zinc alloys. The mechanical properties of the 32Zn-32Cu-36Al alloy sample were tested, the hardness at room temperature was 90HRB (Hv274.5), the impact toughness at room temperature did not change much, and the impact toughness at room temperature was 0.88J / cm 2 .

Embodiment example 3

[0033] 1. Preparation of 36Zn-32Cu-32Al alloy

[0034] First, put 72g of industrial pure zinc and 128g of Al-50Cu into a graphite crucible and heat and melt in a well-type electric furnace. The melting temperature is 750°C. After it is completely melted, stir it and let it stand for 5 minutes. Set aside for 30 minutes, carry out slag removal, casting, and naturally cool to room temperature after casting. The 36Zn-32Cu-32Al alloy of the present invention is obtained. image 3 It is the microstructure of 36Zn-32Cu-32Al alloy.

[0035] 2. Mechanical properties of 36Zn-32Cu-32Al alloy

[0036] The impact sample adopts a cylindrical sample, Figure 5 Dimensions of impact specimens for die-cast zinc alloys. The mechanical properties of the 36Zn-32Cu-32Al alloy sample were tested, the hardness at room temperature was 92HRB (Hv284.8), the impact toughness at room temperature did not change much, and the impact toughness at room temperature was 1.85J / cm 2 .

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
Room temperature impact toughnessaaaaaaaaaa
Room temperature impact toughnessaaaaaaaaaa
Room temperature impact toughnessaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of nonferrous metal processing, and particularly relates to a high-hardness zinc-copper-aluminum alloy. The high-hardness wear-resistant zinc-copper-aluminum alloy is prepared from an Al-50Cu intermediate alloy, industrial pure copper, industrial pure aluminum and industrial pure zinc by adopting a smelting casting and natural cooling method. The alloy comprises,by mass, 30-38% of Zn, 30-38% of Cu, 30-38% of Al and less than 0.8% of inevitable impurities. The preferable alloy component is copper-aluminum-zinc metal component with equal mass percentage, and has the optimal hardness and wear-resistant effect. The high-hardness zinc-copper-aluminum alloy can be applied to the industrial fields of machinery, mines and the like.

Description

technical field [0001] The invention relates to a high-hardness zinc-copper-aluminum alloy, and more particularly relates to a high-hardness zinc-copper-aluminum alloy with an equal mass ratio. Background technique [0002] Casting methods are widely used in various fields, such as electronic parts, optical instruments, automobiles, textiles, construction, measuring instruments, etc., especially in the production of auto parts. [0003] Pure copper is soft and has a red-orange metallic luster on the surface. It has good ductility, thermal conductivity and electrical conductivity. Therefore, it is widely used in refrigeration, electric power and other industries. Its consumption of non-ferrous metal materials in China is second only to aluminum. Since the 1930s, due to the increase in the use of copper and the consumption of mineral resources, a situation of tension in copper resources has emerged around the world, resulting in increasingly expensive copper raw materials and ...

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): C22C30/06C22C1/03
CPCC22C1/03C22C30/02C22C30/06
Inventor 王建华王志文彭浩平刘亚苏旭平
Owner CHANGZHOU UNIV
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