Fatigue-resistant corrosion-resistant aluminum profile for automobile and preparation method of aluminum profile

A fatigue-resistant and corrosion-resistant technology, applied in the field of fatigue-resistant and corrosion-resistant aluminum profiles for automobiles and their preparation, can solve the problems of stress fatigue, low fracture toughness and stress corrosion resistance, and insufficient stress corrosion resistance.

Inactive Publication Date: 2015-05-20
湖州宏叶铝塑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Problems in the prior art: Although high-strength aluminum alloy has high specific strength, its low fracture toughness and stress corrosion resistance restrict its application
Using traditional casting, extrusion an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The fatigue-resistant and corrosion-resistant aluminum profile for automobiles of the present invention contains metals in the following mass percentages: Cu 0.2%, Mn 0.40%, Mg 1.9%, Cr 0.2%, Zn 5.0%, Zr 0.2%, V 0.2%, Ti≤0.10%, Fe≤0.30%, Si≤0.35%, the sum of impurities≤0.15%, and the rest is Al.

[0029] The preparation method of fatigue-resistant and corrosion-resistant aluminum profiles for automobiles of the present invention comprises the following steps:

[0030] S1. Alloy smelting: In the smelting furnace, aluminum ingots and master alloys are used to smelt alloys. The master alloys include aluminum copper, aluminum chromium, aluminum zirconium, aluminum manganese, magnesium ingots, zinc ingots and aluminum titanium, except for the Except for magnesium ingots, zinc ingots and aluminum-titanium, other intermediate alloys are added on the upper part of the added aluminum ingots, and then ignited and melted. Take a chemical analysis sample and add it under the condit...

Embodiment 2

[0044] The fatigue-resistant and corrosion-resistant aluminum profile for automobiles of the present invention contains metals in the following mass percentages: Cu 0.1%, Mn 0.40%, Mg 2.0%, Cr 0.3%, Zn 4.0%, Zr 0.1%, V 0.1%, Ti≤0.10%, Fe≤0.30%, Si≤0.35%, the sum of impurities≤0.15%, and the rest is Al.

[0045] The preparation method of fatigue-resistant and corrosion-resistant aluminum profiles for automobiles of the present invention comprises the following steps:

[0046] S1. Alloy smelting: In the smelting furnace, aluminum ingots and master alloys are used to smelt alloys. The master alloys include aluminum copper, aluminum chromium, aluminum zirconium, aluminum manganese, magnesium ingots, zinc ingots and aluminum titanium, except for the Except for magnesium ingots, zinc ingots and aluminum-titanium, other intermediate alloys are added on the upper part of the added aluminum ingots, and then ignited and melted. Take a chemical analysis sample and add it under the conditio...

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PUM

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Abstract

The invention discloses a fatigue-resistant corrosion-resistant aluminum profile for an automobile. The aluminum profile comprises the following metals in parts by weight: 90 parts of Al, 0.1-0.2 part of Cu, 0.20-0.40 part of Mn, 1.0-2.0 parts of Mg, 0.1-0.3 part of Cr, 4.0-6.0 parts of Zn, 0.1-0.2 part of Zr and 0.1-1 part of V. The invention further discloses a related preparation process. The prepared aluminum profile has the advantages of fatigue resistance and corrosion resistance; and compared with the conventional aluminum profile, the aluminum profile disclosed by the invention has high yield strength and tensile strength and has wide application prospects in the automobile.

Description

technical field [0001] The invention relates to the field of aluminum materials, in particular to a fatigue-resistant and corrosion-resistant aluminum profile for automobiles and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, more and more lightweight car bodies are mentioned. Although superhard aluminum alloys have the advantages of light weight, high specific strength, easy processing, good corrosion resistance, and low cost, However, due to the selection of existing alloys, raw materials, and production processes, although the material has high strength, its fracture toughness and stress corrosion resistance cannot meet the needs of the car body market for high-strength, high-toughness, and high-corrosion-resistant materials. The main structural materials are still Relying on imports has greatly restricted the development of my country's automobile industry. Using aluminum alloy as car body structural mate...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/06C22C1/03C22F1/053
CPCC22C21/10C22C1/026C22C1/03C22C1/06C22F1/053
Inventor 顾余良
Owner 湖州宏叶铝塑材料有限公司
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