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A kind of recycled wear-resistant deformed aluminum alloy and its preparation method

A technology of aluminum alloy and aluminum alloy sheet, which is applied in the field of regenerated wear-resistant deformed aluminum alloy and its preparation, can solve the problems that it is difficult to take into account the wear resistance and hot cracking tendency of 6000 series aluminum alloy, and the hardness and wear resistance are low. Significant aging strengthening effect, improved mechanical properties, and excellent wear resistance

Active Publication Date: 2020-04-28
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness and wear resistance of 6000 series aluminum alloys are low, and the existing technical literature (Wu Yue. The influence of alloying elements and heat treatment processes on the structure and properties of Al-Mg-Si-Cu alloys [D]. 2015.) published a A method for improving the wear resistance of aluminum 6061 aluminum alloy, by increasing the Cu content in 6061 aluminum alloy, increasing the dispersion strengthening phase of the alloy, so that the hardness and wear resistance of the alloy are significantly improved
The existing technology is difficult to balance the wear resistance and thermal cracking tendency of 6000 series aluminum alloy

Method used

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  • A kind of recycled wear-resistant deformed aluminum alloy and its preparation method
  • A kind of recycled wear-resistant deformed aluminum alloy and its preparation method
  • A kind of recycled wear-resistant deformed aluminum alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] In this example, on the basis of comparative examples, the components of the 6000-series secondary aluminum alloy melts are controlled, and the raw materials used for the control include: Al-20%Mn, Al-50%Mg, Al-10%RE and Al-10 %Sr master alloy, wherein RE is a mixed rare earth containing Ce and La (Ce / La mass ratio is 6 / 4). The composition and mass percentage of the alloy are: Fe: 1.1%, Si: 0.8%, Mn: 0.8%, Mg: 1.2%, Cu: 0.7%, Zn: 0.25%, RE: 0.2%, Sr: 0.05%, Yu The amount is Al.

[0060] The smelting and preparation process of the alloy in this embodiment includes the following steps: smelting of scrap aluminum alloy, alloy composition adjustment, casting molding, homogenization heat treatment, rolling molding and solution aging treatment. Compared with the comparative example, the alloy composition adjustment is increased. The specific process and process parameters are as follows:

[0061] (1) Waste miscellaneous aluminum alloy smelting: Sorting, weighing, melting, ...

Embodiment 2

[0079] In this example, 6000x scrap aluminum alloy products are mainly selected for smelting, and the composition of the melt is adjusted. The raw materials used for adjustment include: Al-20%Mn, Al-50%Mg, Al-10%RE and Al-10% Sr master alloy. The composition and mass percentage of the alloy are: Fe: 1.2%, Si: 0.6%, Mn: 1.0%, Mg: 1.5%, Cu: 0.3%, Zn: 0.1%, RE: 0.1%, Sr: 0.08%, Yu The amount is Al.

[0080] The melting and preparation process of the alloy in this embodiment is the same as that in Embodiment 1. The different specific process parameters are different. The specific process and process parameters are as follows:

[0081] (1) Waste miscellaneous aluminum alloy smelting: Sorting, weighing, melting, and then performing melt refining treatment for 6000 series waste miscellaneous aluminum alloy products. Refining and slag removal were carried out by adding refining agent and slag removal agent by nitrogen injection method, the treatment temperature was controlled at 6...

Embodiment 3

[0090] In this embodiment, 6000 series waste aluminum alloy products are mainly selected for smelting, and the composition of the melt is adjusted, and the raw materials used for the adjustment are the same as those in Embodiment 1. The composition and mass percentage of the alloy are: Fe: 0.8%, Si: 1.0%, Mn: 0.6%, Mg: 1.0%, Cu: 0.7%, Zn: 0.3%, RE: 0.4%, Sr: 0.03%, Yu The amount is Al.

[0091] The melting and preparation process of the alloy in this embodiment is the same as that in Embodiment 1. The different specific process parameters are different. The specific process and process parameters are as follows:

[0092] (1) Waste miscellaneous aluminum alloy smelting: Sorting, weighing, melting, and then performing melt refining treatment for 6000 series waste miscellaneous aluminum alloy products. Refining and slag removal were carried out by adding refining agent and slag removal agent by nitrogen injection method, the treatment temperature was controlled at 720°C, and t...

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Abstract

The invention discloses regenerated wear-resistant deformed aluminum alloy and a preparation method thereof. The component comprises the following components of, in percentage by weight, 0.6%-1.0% ofSi, 1.0%-1.5% of Mg, 0.8%-1.2% of Fe, 0.6%-1.0% of Mn, 0.6%-0.8% of Cu, 0.1%-0.3% of Zn, 0.1%-0.4% of RE and 0.03%-0.08% of Sr, and the balance aluminum; and the preparation method comprises the stepsof 6000 series aluminum alloy smelting, alloy component adjusting, casting forming, homogenization heat treatment, rolling forming and solid solution aging treatment. The thermal cracking sensitivitycoefficient of the regenerated wear-resistant deformed aluminum alloy is 1.3-1.5, and the friction coefficient is 0.32-0.38; and the regenerated wear-resistant deformed aluminum alloy and a preparation method thereof has a reduced thermal cracking tendency and relatively high wear resistance, and solves the technical problems that the 6000 series aluminum alloy material is difficult to consider thermal cracking tendency and wear resistance.

Description

technical field [0001] The invention relates to a regenerated wear-resistant deformed aluminum alloy and a preparation method thereof, in particular to the preparation of a wear-resistant deformed aluminum alloy based on regeneration of waste 6000 series aluminum alloys rich in Fe and Cu. Background technique [0002] Aluminum and its aluminum alloys have the advantages of easy processing, low density, good electrical conductivity and corrosion resistance, and have broad application prospects. Aluminum has become the most consumed non-ferrous metal in the world today. The total amount of aluminum alloys scrapped from aluminum products each year accounts for about half of the total demand in the global aluminum market. The recycling of waste aluminum has low energy consumption and can realize resource recycling, etc. Significant advantages are of great significance to the development of the aluminum alloy industry. [0003] Among the common scrap aluminum, Al-Si-Mg wrought a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/08C22C1/03C22F1/04C22F1/047
CPCC22C1/026C22C1/03C22C21/00C22C21/08C22F1/04C22F1/047
Inventor 杜军黄正阳何健松史明波
Owner SOUTH CHINA UNIV OF TECH
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