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Aluminum alloy plate with high bake hardenability and preparation method thereof

An aluminum alloy plate, bake hardening technology, applied in the field of aluminum alloy plate manufacturing, can solve the problems of poor adhesion and corrosion resistance of automobile body panels, achieve excellent paint bake hardenability, prevent surface roughness, and improve molding sexual effect

Active Publication Date: 2018-12-18
YINGKOU ZHONGWANG ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention solves the problem that MgO is easily formed on the surface of the aluminum alloy plate used in the automobile body covering in the prior art, making the adhesion of the automobile body covering and the corrosion resistance after painting poor. , providing a high bake-hardenable aluminum alloy plate and a preparation method thereof

Method used

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  • Aluminum alloy plate with high bake hardenability and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing a highly bake-hardenable aluminum alloy plate, comprising the following steps:

[0031] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The ratio of the mass percentage of each element of the aluminum alloy plate raw material is as follows:

[0032] element

Mg

Si

Ti

B

Fe

Zn

Cu

sn

mn

Cr

Al

content

0.40

0.60

0.008

0.0005

0.30

0.06

0.30

0.03

0.01

0.1

margin

[0033] Add the prepared aluminum alloy raw materials into the melting furnace and mix them evenly to melt them into liquid aluminum alloys, then melt and cast the liquid aluminum alloys into aluminum alloy ingots. , semi-continuous casting method of casting;

[0034] B. Perform homogenization annealing on the aluminum alloy ingot after melting and casting in step A, wherein the annealing temperature is 550° C., and the hol...

Embodiment 2

[0042] The difference between embodiment 2 and embodiment 1 is that in step A, the mass percentage ratio of each element of the aluminum alloy plate raw material is as follows:

[0043] element

Embodiment 3

[0045] The difference between Example 3 and Example 2 is that the homogenization annealing temperature in step B is 600° C., and the holding time is 4 hours.

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Abstract

The invention belongs to the field of manufacturing of aluminum alloy plates, and relates to an aluminum alloy plate with high bake hardenability and a preparation method thereof. The aluminum alloy plate with the high bake hardenability is prepared from, by weight, 0.4-0.9% of Mg, 0.6-1.4% of Si, 0.008-0.12% of Ti, 0.0005-0.04% of B, no more than 0.3% of Fe, 0.06-1.5% of Zn, 0.3-0.8% of Cu, 0.03-0.25% of Sn, no more than 0.15% of impurities and the balance Al, wherein the content of each the impurity is no more than 0.05%. By adoption of the aluminum alloy plate with the high bake hardenability and the preparation method thereof, the problem that MgO is likely to be formed on the surface of an aluminum alloy plate adopted by an automobile body covering part in the prior art, and consequentially, the binding property and corrosion resistance after painting of the automobile body covering part are poor is solved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy plate manufacture, and relates to an aluminum alloy plate with high baking hardenability and a preparation method thereof. Background technique [0002] Faced with the pressure of saving energy and reducing environmental pollution, major automakers are increasingly paying attention to the lightweight of automotive materials. Aluminum alloy has become the material of choice for lightweight vehicles due to its low density, high specific strength, and excellent corrosion resistance, formability, and collision energy absorption. Therefore, the application of aluminum alloy sheets in covering parts such as automobile hoods, trunk lids and car doors is becoming more and more common. [0003] At present, automotive aluminum sheets mainly include 5000 series and 6000 series. 5000-series aluminum alloys are non-heat-treatable and strengthened aluminum alloys, and their cost is lower than that of 6000-series...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/08C22C21/10C22C21/18C22F1/043C22F1/047C22F1/053C22F1/057C22F1/05
CPCC22C21/02C22C21/08C22C21/10C22C21/14C22C21/16C22C21/18C22F1/043C22F1/047C22F1/05C22F1/053C22F1/057
Inventor 迟壮田洪超李健刘贵军吕洪伟王志会
Owner YINGKOU ZHONGWANG ALUMINUM CO LTD
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