Preparation method for 5754 alloy aluminum plate used for automobile

A technology for alloy aluminum plates and automobiles, which is applied in the field of aluminum alloy casting, can solve the problems that the chemical composition of 5754 alloy aluminum plates for automobiles has not been studied, and achieve the effects of improving the cleanliness of the melt, improving the machinability, and increasing the yield

Active Publication Date: 2020-04-10
广西润泰铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Continuous casting and rolling technology is a new type of aluminum and aluminum alloy billet production technology. The 5754 alloy billet prepared by continuous casting and rolling technology can be used to prepare aluminum sheet materials for automobiles with certain post-processing technology. This technology is used abroad. There have been related reports and applications, but due to technical limitations in China, the industry has not yet developed a chemical composition of 5754 alloy aluminum sheets for automobiles that matches the characteristics of continuous casting and rolling technology. The continuous casting and rolling process produces 5754 Processing technical parameters of aluminum sheet blanks for alloy automobiles and post-process processing technology applicable to continuous casting and rolling of 5754 alloy aluminum sheet blanks for automobiles

Method used

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  • Preparation method for 5754 alloy aluminum plate used for automobile
  • Preparation method for 5754 alloy aluminum plate used for automobile
  • Preparation method for 5754 alloy aluminum plate used for automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing a 1.1mm thick 5754 alloy aluminum sheet for automobiles.

[0044] S1. Preparation of aluminum melt:

[0045] A 5754 alloy aluminum sheet for automobiles, the percentage content of alloying elements is: Si: 0.06wt%; Fe: 0.12wt%; Mg: 3.4wt%; Cr: 0.2wt%; Cu: 0.25wt%; Ce: 0.15wt% ; Ti: 0.030wt%, the balance being Al.

[0046] According to the chemical composition requirements of the alloy, 50wt% electrolytic aluminum liquid, 50wt% aluminum ingot with an aluminum content ≥ 99.7%, and Cr, Cu, and Ce alloy additives were put into the melting furnace together. Ce was added as pure Ce alloy, and Cr and Cu were added as Add in the form of alloy additives, Ti in the furnace is added in the form of Al-10Ti master alloy, the content is controlled at 0.016%, and it is added before the last refining, and the remaining 0.014% Ti is set in the launder interval of 10m in front of the SNIF degassing box for 3 Six groups of Al-Ti-B wires are used for online additio...

Embodiment 2

[0057] A method for preparing a 2.0mm thick 5754 alloy aluminum plate for automobiles.

[0058] S1. Preparation of aluminum melt:

[0059] A 5754 alloy aluminum sheet for automobiles, the percentage content of alloying elements is: Si: 0.06wt%; Fe: 0.12wt%; Mg: 3.2wt%; Cr: 0.2wt%; Cu: 0.25wt%; Ce: 0.20wt% ; Ti: 0.0025wt%, the balance being Al.

[0060]According to the alloy chemical composition requirements, 55wt% electrolytic aluminum liquid, 45wt% aluminum ingot with aluminum content ≥ 99.7% and Cr, Cu, Ce alloy additives were put into the melting furnace together, Mg was 99.96wt% pickled magnesium ingot Adding, Ce is added as pure Ce alloy, Cr and Cu are added in the form of alloy additives, Ti is added in the form of Al-10Ti master alloy in the furnace, and the content is controlled at 0.010%. It is added before the last refining, and the remaining 0.015% of Ti is in the 3 feeding positions are set at intervals of 9m in front of the SNIF degassing box, and 6 groups of Al...

Embodiment 3

[0071] A method for preparing a 1.5mm thick 5754 alloy aluminum plate for automobiles.

[0072] S1. Preparation of aluminum melt:

[0073] A 5754 alloy aluminum sheet for automobiles, the percentage content of alloying elements is: Si: 0.05wt%; Fe: 0.13wt%; Mg: 3.6wt%; Cr: 0.15wt%; Cu: 0.20wt%; Ce: 0.10wt% ; Ti: 0.0035wt%, the balance being Al.

[0074] Put 60wt% electrolytic aluminum liquid, 40wt% aluminum ingot with aluminum content ≥ 99.7% and Cr, Cu, Ce alloy additives into the melting furnace according to alloy chemical composition requirements, Mg is added with 99.96wt% pickled magnesium ingot , Ce is added as pure Ce alloy, Cr and Cu are added in the form of alloy additives, Ti is added in the form of Al-10Ti master alloy in the furnace, the content is controlled at 0.020%, and it is added before the last refining, and the remaining 0.010% of Ti is in SNIF The launder 9m in front of the degassing box is set at intervals of 3 feeding positions, and 6 groups of aluminum...

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Abstract

The invention discloses a preparation method for a 5754 alloy aluminum plate used for an automobile. The preparation method comprises the following steps of: preparing an aluminum melting body; carrying out continuous casting and tandem rolling: firstly, adopting a soft alloy aluminum melting body as a melting body head for carrying out casting, and meanwhile, adopting gas protection during the casting; carrying out homogenizing annealing; carrying out cold casting; and carrying out finished product annealing. The invention provides a method for producing the 5754 alloy aluminum plate used forthe automobile by a continuous casting and tandem rolling way, working efficiency is improved, and a working procedure is shortened.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a method for preparing a 5754 alloy aluminum plate for automobiles. Background technique [0002] With the release and implementation of the "National Phase Six Motor Vehicle Pollutant Emission Standards", and the increasingly stringent requirements for environmental protection and energy conservation and consumption reduction regulations, lightweight has become an important direction for the development of China's automobile industry, and it is also an inevitable trend. Automobile lightweight is to reduce the curb weight of the automobile as much as possible under the premise of ensuring the strength and safety performance of the automobile, so as to improve the power utilization rate of the automobile, reduce fuel consumption, and reduce exhaust pollution. my country has made it clear that the average fuel consumption of new passenger cars will reach 5L / 100km by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047B21C37/02
CPCB21C37/02C22C1/026C22C1/03C22C21/08C22F1/047
Inventor 邢俊杰朱勇姜小龙陈君赵阳磊庞富伟
Owner 广西润泰铝业有限公司
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