6-series aluminum alloy plate for automobile body outer panel and preparation method thereof

A technology of aluminum alloy sheet and automobile body, applied in the field of 6-series aluminum alloy sheet and its preparation, 6-series aluminum alloy sheet for automobile body outer sheet and its preparation, can solve the problems affecting the large-scale promotion and application of automobile body outer sheet, 6 It is a problem that the surface quality of the hemming performance of the aluminum alloy plate does not meet the production requirements, etc., to achieve the effect of excellent hemming performance, smooth and delicate surface quality, and improved process routes and parameters

Active Publication Date: 2021-11-09
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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Problems solved by technology

[0005] In view of this, in order to solve the problem that the hemming performance and surface quality of the 6-series aluminum alloy sheet prepared by the existing process cannot meet the production requirements, which affects the large-scale application of the outer panel of the automobile body, an automobile body outer panel is provided. 6-series aluminum alloy plate for plate and preparation method thereof

Method used

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  • 6-series aluminum alloy plate for automobile body outer panel and preparation method thereof
  • 6-series aluminum alloy plate for automobile body outer panel and preparation method thereof
  • 6-series aluminum alloy plate for automobile body outer panel and preparation method thereof

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Embodiment

[0032] A method for preparing a 6-series aluminum alloy plate for an automobile body outer panel, comprising the steps of:

[0033] A. The aluminum alloy raw material for preparing the outer panel of the automobile body is batched according to the weight percentage, and the mass percentage ratio of each element of the aluminum alloy raw material is as follows:

[0034] element Si Fe Cu mn Mg Ti Impurities Al content 0.60 0.15 0.15 0.10 0.70 0.02 0.03 margin

[0035] Impurities contain alkali metals, Na≤10ppm in alkali metals, Ca≤8ppm, Li≤15ppm; aluminum alloy raw materials are recycled aluminum, industrial pure aluminum, industrial pure Mg, industrial pure Zn, master alloy Al-Si, master alloy Al- Cu, master alloy Al-Fe, master alloy Al-Mn. The prepared aluminum alloy raw material is melted into liquid aluminum alloy in a smelting furnace. The melting temperature of the aluminum alloy raw material is 700-760°C. During the melting proc...

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Abstract

The invention belongs to the field of aluminum alloy sheets for automobile bodies, and relates to a 6-series aluminum alloy sheet for automobile body outer panels and a preparation method thereof. 0.10~0.20%, Cu: 0.10~0.20%, Mn: 0.05~0.15%, Mg: 0.65~0.75%, Ti: 0.01~0.03%, single impurity ≤0.03%, total impurity ≤0.10%, the balance is Al, Its preparation method strictly limits the rolling passes and process time of hot rough rolling, and two annealing is carried out in the cold rolling process, and the final product obtained has obvious improvement in hemming performance compared with the traditional 6016 alloy , After stamping, the surface is smooth and delicate, without visible Luoping line defects, and the surface quality has been significantly improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy sheets for automobile bodies, and relates to a 6-series aluminum alloy sheet for automobile body outer panels and a preparation method thereof, in particular to a 6-series aluminum alloy sheet with excellent hemming performance and high surface quality after stamping and its preparation method. Background technique [0002] With the continuous growth of the number of cars in various countries in the world, fuel consumption and exhaust pollution are increasing day by day. Automakers have to make reducing fuel consumption and limiting vehicle exhaust emissions one of the important goals of automobile development. Lightweight body is an effective way to achieve this goal. Therefore, in recent years, the application of aluminum alloy as a lightweight material on the body has become more and more popular. [0003] At present, most of the research focus of patents on the outer panel of automobil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22C1/06C22F1/047C22F1/05B21C37/02
CPCB21C37/02C22C1/026C22C1/03C22C1/06C22C21/08C22F1/002C22F1/047C22F1/05
Inventor 崔立治王飞祖立成冉凡青张旭鹏王如川王哲
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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