Formula and production technology of high-strength aluminum alloy car body part

An aluminum alloy vehicle body and production process technology, applied in the field of aluminum alloys, can solve the problems of low corrosion resistance of aluminum alloy profiles, and achieve the effects of improving the mechanical properties and plastic workability of materials, improving strength and toughness, and reducing size

Inactive Publication Date: 2018-01-19
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, in order to solve the problem of low corrosion resistance of aluminum alloy profiles produced by the existing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A. Ingredients: The mass percentage ratio of each element in the formula of high-strength aluminum alloy car body parts is as follows:

[0028] element

Cu

Si

Mg

Fe

Ti

mn

Cr

Sr

Sb

B

Impurities

Al

content

0.60

10

0.45

0.5

0.2

0.7

0.35

0.02

0.20

0.004

0.15

margin

[0029] Add the prepared high-strength aluminum alloy raw materials into the melting furnace and mix them evenly, then melt them into liquid aluminum alloys, and melt and cast the liquid aluminum alloys into aluminum alloy ingots. , refining, secondary stirring, secondary slag removal, on-line refinement, degassing, filtration, casting;

[0030] B. After the melted aluminum alloy ingot is homogenized and heat-treated, it is sent to an aluminum alloy extruder for extrusion molding to obtain an aluminum alloy profile. The temperature of the aluminum alloy ingot after preheating is 440°C. The extrusion speed is 4.5m...

Embodiment 2

[0034] The difference between embodiment 2 and embodiment 1 is that the mass percentage ratio of each element in the formula of high-strength aluminum alloy vehicle body parts in step A is as follows:

[0035] element

Embodiment 3

[0037] The difference between Example 3 and Example 1 is that the temperature of the aluminum alloy ingot preheated in Step B is 490° C., and the extrusion speed of the extruder is 5.0 m / min.

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PUM

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Abstract

The invention belongs to the technical field of aluminum alloy, and relates to a formula and production technology of a high-strength aluminum alloy car body part. The high-strength aluminum alloy carbody part comprises, by mass, 0.1%-0.6% of Cu, 7.5%-10.0% of Si, 0.25%-0.45% of Mg, 0.15%-0.50% of Fe, 0.10%-0.20% of Ti, 0.20%-0.70% of Mn, 0.15%-0.35% of Cr, 0-0.15% of other impurities and the balance Al. By properly selecting the dosage of the Cu, Si, Mg, Fe, Ti, Mn and Cr, high-strength aluminum alloy can be obtained, the formula is simple, the mechanical properties are excellent, and the corrosion resistance is splendid.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and relates to a formula of high-strength aluminum alloy car body components and a production process thereof. Background technique [0002] Because aluminum has excellent characteristics such as light weight and environmental protection, aluminum alloys are widely used as materials for components in various fields such as automobiles, industrial machinery, aircraft and household appliances. Among them, in automotive applications, in order to reduce the weight of the body and save fuel, Aluminum alloys have been applied to various parts of the car body. Since these parts not only require mechanical properties such as excellent strength and ductility, but also durability, although existing alloys can meet the mechanical properties required by these parts, they often Corrosion resistance can not be well improved. Contents of the invention [0003] In view of this, in order to solve the p...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22F1/043
Inventor 马青梅李菁菁曹帅叶尚英
Owner CHINA ZHONGWANG
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