Intermediate annealing process of aluminum alloy and aluminum alloy for automobile covering part

An automobile cover and intermediate annealing technology, which is applied in the field of aluminum alloy casting, can solve the problems such as the inability to choose aluminum materials, and achieve the effects of improving the microstructure, improving the cooling speed, and improving the heating speed

Inactive Publication Date: 2016-05-04
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing aluminum materials cannot meet this demand, which makes it impossible for automobile companies to choose aluminum as the outer cover material when selecting materials.

Method used

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  • Intermediate annealing process of aluminum alloy and aluminum alloy for automobile covering part
  • Intermediate annealing process of aluminum alloy and aluminum alloy for automobile covering part
  • Intermediate annealing process of aluminum alloy and aluminum alloy for automobile covering part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In the rapid annealing equipment, the 6-series aluminum alloy is heated to 450°C at a heating rate of 10°C / s, and the aluminum alloy is heated. After 1 minute, it is kept at 450°C for 3 minutes; then the aluminum alloy is cooled by air to 200°C / s The temperature is lowered at a rate of 1 min, and the temperature is lowered to room temperature to obtain an aluminum alloy after intermediate annealing.

[0039] The present invention detects the flanging performance of the aluminum alloy after the intermediate annealing obtained in the present embodiment according to the national standard "Aluminum Alloy Sheet for Automobile" and the GMW15192 standard, and the results are as follows: figure 1 as shown, figure 1 It is the flanging performance diagram of the aluminum alloy used for automobile panels in Example 1 of the present invention. Depend on figure 1 It can be seen that the flanging factor r of the aluminum alloy after the intermediate annealing in this embodiment is ...

Embodiment 2

[0041] The 6-series aluminum alloy is heated to 550°C at a rate of 5°C / s in the rapid annealing equipment, and the aluminum alloy is heated. After 5 minutes, it is kept at 550°C for 2 minutes; then it is rapidly cooled with water. The temperature is 250°C / min, and the temperature is lowered to room temperature to obtain an aluminum alloy after intermediate annealing.

[0042] The present invention detects the flanging performance of the aluminum alloy after the intermediate annealing obtained in the present embodiment according to the national standard "Aluminum Alloy Sheet for Automobile" and the GMW15192 standard, and the results are as follows: figure 2 as shown, figure 2 It is the flanging performance diagram of the aluminum alloy for automobile panels in Example 2 of the present invention. Depend on figure 2 It can be seen that the flanging factor r of the aluminum alloy after the intermediate annealing in this embodiment is 0.45, there is no crack after flanging, it...

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Abstract

The invention provides an intermediate annealing process of an aluminum alloy. The intermediate annealing process comprises the step of carrying out intermediate annealing on a cold-rolled aluminum alloy to obtain the aluminum alloy subjected to intermediate annealing, wherein the temperature of intermediate annealing is 450-550 DEG C, and the time of intermediate annealing is 2-20 minutes. A continuous annealing mode is adopted, annealing temperature of an intermediate annealing process is increased, and morphology of the annealed aluminum alloy is improved, so that the effect of improving flangability of products is achieved. Experiment results show that the aluminum alloy which is prepared by the intermediate annealing process has smooth surfaces after being subjected to flanging, does not have crack initiation lines or cracks, and can be applied to the automobile industry. The invention further provides an aluminum alloy for an automobile covering part.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting, and in particular relates to an intermediate annealing process of aluminum alloy and an aluminum alloy for automobile cover parts. Background technique [0002] Automobile panels refer to the surface or internal parts of the space shape made of thin metal plates that cover the engine, chassis, cab, and body. According to function and location, it can be divided into three categories: external covering, internal covering and skeleton covering. They have different characteristics from general stamping parts in terms of process design, mold processing, equipment selection and quality control (dimensional tolerance, shape accuracy, part stiffness, surface quality), etc. [0003] The basic processes of stamping and forming of automotive panels include: blanking, pre-bending, drawing, trimming, punching, flanging, shaping, etc. At present, the basic punching and forming technologies of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047
CPCC22F1/047C22C21/08
Inventor 代陈绪
Owner SOUTHWEST ALUMINUM GRP
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