Method for preparing rare earth containing aluminium alloy

An aluminum alloy and alloy technology, applied in the field of materials, can solve problems such as large energy consumption, and achieve the effects of reducing environmental pressure, realizing recycling, and improving recovery rate

Inactive Publication Date: 2018-03-09
胡桂芳
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of high energy consumption in the traditional 7075 aluminum alloy preparation process, the present invention provides a method for preparing rare earth-containing aluminum alloys, which uses waste al

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

Embodiment 1

[0018] Clean the waste 6063 aluminum alloy to remove surface impurities and then dry it to test its composition; prepare metal aluminum, metal silicon, metal magnesium, metal zinc, Al-30Cu alloy, Al-10Mn alloy, Al-2Cr alloy, Al-3Ti alloy and Al-10La alloy is used as the melting material alloy, so that the total composition of the melting material alloy and scrap 6063 aluminum alloy is Si 0.4%, Cu 1.1%, Mn 0.2%, Mg 2.1%, Cr 0.2%, Zn 5%, Ti 0.2%, La 0.1%, and the balance is aluminum, while preparing excess metal magnesium, which accounts for 10% of the total weight of metal magnesium in the smelted alloy material; wherein the weight of waste 6063 aluminum alloy accounts for 10% of the total weight of the smelted material alloy and waste 6063 aluminum 62% of the total weight of the alloy;

[0019] Put the prepared metal aluminum into an induction furnace, heat to 850±5°C, add mixed salt after the metal aluminum melts, then add waste 6063 aluminum alloy, and then reheat to 850±5°C...

Embodiment 2

[0025] Method is with embodiment 1, and difference is:

[0026] The total composition contains 0.2% of La by weight percentage; excessive metal magnesium accounts for 15% of the total weight of metal magnesium; waste 6063 aluminum alloys account for 61% of the total weight of smelting material alloys and waste 6063 aluminum alloys;

[0027] The composition of the mixed salt is KCl 31%, NaCl 31% by weight percentage, and the balance is Na 3 AlF 6 , the amount of mixed salt added is 1.1% of the total weight of aluminum metal;

[0028] The melt is poured after standing for 20 minutes;

[0029] The ingot is kept at 460°C for 1.4h, the reduction ratio of rolling at 450±10°C is 70%; the annealing treatment at 320°C for 80min, the reduction ratio of cold rolling is 40%

[0030] Solution treatment at 455°C for 3 hours and aging treatment at 113°C for 11 hours.

Embodiment 3

[0032] Method is with embodiment 1, and difference is:

[0033] The total composition contains 0.3% La by weight percentage; excess metal magnesium accounts for 20% of the total weight of metal magnesium; waste 6063 aluminum alloys account for 60% of the total weight of smelting material alloys and waste 6063 aluminum alloys;

[0034] The composition of the mixed salt is KCl 32%, NaCl 32% by weight percentage, and the balance is Na 3 AlF 6 , the addition of mixed salt is 1.2% of the total weight of aluminum metal;

[0035] The melt is poured after standing for 15 minutes;

[0036] The ingot is kept at 480°C for 1.2h, the compression ratio of rolling at 450±10°C is 60%; the annealing treatment at 340°C for 60min, the compression ratio of cold rolling is 30%, solution treatment at 460°C for 2h, at 110°C Conditioned aging treatment for 12h.

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

No PUM Login to view more

Abstract

A method for preparing rare earth-containing aluminum alloys, which is carried out in the following steps: (1) treating the surface of waste 6063 aluminum alloys; preparing metal aluminum and the like as smelting material alloys and excess metal magnesium; (2) putting metal aluminum into an induction furnace , after melting, add mixed salt, and then add waste 6063 aluminum alloy; (3) Add part of the smelting material alloy; (4) Use a bell jar to press into part of the smelting material alloy, pour it after degassing; (5) After preheating, heat at 450 Rolling at ±10°C, cold rolling after annealing treatment; (6) Water quenching after cold rolling solution treatment, and then aging. The method of the invention reduces the consumption of industrial pure aluminum, realizes the recycling of waste aluminum alloys, realizes the sustainable development of the aluminum industry, and has the advantages of high recovery rate of waste aluminum, low cost, less pollution and the like.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method for preparing rare earth-containing aluminum alloys. Background technique [0002] 7075 aluminum alloy belongs to 7XXX series ultra-high-strength deformed aluminum alloy, which is widely used in aircraft manufacturing industry, as well as blow molding molds, golf ball heads, shoe molds, paper molds, foam molding molds, dewaxing molds, templates, Fixtures, mechanical equipment, mold processing and other corrosion-resistant high-stress structural parts; solution treatment can improve its plasticity, and heat treatment can improve its strength. [0003] For a long time, most aluminum alloys such as 7075 have been prepared with industrial pure aluminum as the main raw material. Industrial pure aluminum is generally produced by electrolysis. In this process, a large amount of mineral resources such as bauxite, coal, limestone and water and natural resources are ...

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): C22C21/10C22C21/00C22F1/04
CPCC22C21/10C22C21/00C22F1/04
Inventor 胡桂芳
Owner 胡桂芳
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