High-strength and high-tenacity aluminum alloy section for bumper and preparing method of high-strength and high-tenacity aluminum alloy profile

An aluminum alloy profile and high-strength technology, which is applied to the high-strength and high-toughness aluminum alloy profile for bumpers and the field of its preparation, can solve the problems that the performance cannot meet the use requirements, the safety factor of the car is low, and the production efficiency is low, and the energy absorption is achieved. The effect of good effect, high production efficiency and low cost

Active Publication Date: 2016-11-09
CIXI YIMEIJIA ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent CN104862517A discloses a kind of energy-absorbing foamed aluminum material for manufacturing vehicle bumpers; patent CN103710594A discloses a preparation method of aluminum alloy profiles for car bumpers; and its preparation process, but the tensile strength, hardness and toughness of the above-mentioned existing aluminum profiles meet the current high safety requirements, resulting in a low safety factor for cars, high cost, low production efficiency, and performance that cannot be used Require

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation of high-strength and high-toughness aluminum alloy profiles for bumpers

[0028] Step 1, according to the proportion of chemical composition: silicon 0.5%, magnesium 3.5%, iron 0.5%, copper 0.1%, manganese 2.3%, chromium 0.1%, zinc 4%, titanium 0.2%, gadolinium 0.01%, yttrium 0.03%, The rest is aluminum and unavoidable impurity elements; Weigh metal silicon, aluminum ingots, magnesium ingots, zinc ingots and manganese ingots and add them to a dry melting furnace, pre-smelt at a temperature of 780 ° C for 35 minutes, and then mix the formula ratio The chemical composition iron, copper, chromium, titanium, gadolinium, and yttrium are put into the melting furnace in the form of master alloy, and the temperature is kept at 745°C until all the materials are melted to obtain an aluminum alloy solution;

[0029] Step 2, pour the molten aluminum alloy obtained in step 1 into a standing furnace at a temperature of 743° C., and carry out refining and degassi...

Embodiment 2

[0033] Example 2 Preparation of high-strength and high-toughness aluminum alloy profiles for bumpers

[0034]Step 1, according to the proportion of chemical composition: silicon 1%, magnesium 5.5%, iron 0.8%, copper 0.3%, manganese 2%, chromium 0.1%, zinc 4%, titanium 0.2%, gadolinium 0.02%, yttrium 0.05%, The rest is aluminum and unavoidable impurity elements; Weigh metal silicon, aluminum ingots, magnesium ingots, zinc ingots and manganese ingots and add them to a dry smelting furnace, pre-smelt at a temperature of 790 ° C for 50 minutes, and then mix the formula ratio The chemical composition iron, copper, chromium, titanium, gadolinium, and yttrium are put into the melting furnace in the form of master alloy, and the temperature is kept at 750°C until all the materials are melted to obtain an aluminum alloy solution;

[0035] Step 2, pour the molten aluminum alloy obtained in step 1 into a standing furnace at a temperature of 745° C., and carry out refining and degassing b...

Embodiment 3

[0039] Example 3 Preparation of high-strength and high-toughness aluminum alloy profiles for bumpers

[0040] Step 1, according to the proportion of chemical composition: silicon 0.7%, magnesium 4.8%, iron 0.65%, copper 0.2%, manganese 2.1%, chromium 0.2%, zinc 3.5%, titanium 0.33%, gadolinium 0.016%, yttrium 0.040%, The rest is aluminum and unavoidable impurity elements; Weigh metal silicon, aluminum ingots, magnesium ingots, zinc ingots and manganese ingots and add them to a dry melting furnace, pre-smelt at a temperature of 785 ° C for 40 minutes, and then mix the formula ratio The chemical composition iron, copper, chromium, titanium, gadolinium, and yttrium are put into the melting furnace in the form of master alloy, and the temperature is kept at 745°C until all the materials are melted to obtain an aluminum alloy solution;

[0041] Step 2, pour the molten aluminum alloy obtained in step 1 into a standing furnace at a temperature of 745° C., and carry out refining and d...

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Abstract

The invention discloses a high-strength and high-tenacity aluminum alloy section for a bumper. The high-strength and high-tenacity aluminum alloy section is characterized by comprising, by mass percent, 0.5%-1% of silicon, 3.2%-5.5% of magnesium, 0.5%-0.8% of iron, 0.1%-0.3% of copper, 2%-2.3% of manganese, 0.1%-0.3% of chromium, 3%-4% of zinc, 0.2%-0.4% of titanium, 0.01%-0.02% of gadolinium, 0.03%-0.05% of yttrium and the balance aluminum and inevitable impurity elements. Meanwhile, the invention further discloses a preparing method of the aluminum alloy section. The aluminum alloy section prepared through the method is excellent in comprehensive mechanical performance, high in tensile strength, good in tenacity, capable of being used for manufacturing the limousine bumper, high in safety coefficient and durable.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials and processing, and in particular relates to a high-strength and high-toughness aluminum alloy profile for bumpers and a preparation method thereof. Background technique [0002] At present, with the rapid development of the automobile industry, people have higher and higher requirements for the cost performance of automobiles. The bumper is an important part of the car itself. Its function is to protect the driver and passengers on time and reduce the damage to the car body when the car collides with other vehicles or obstacles. Safety-type bumpers are being researched and developed at home and abroad, which represents the development trend of automobile bumpers in various countries in the future. Safety-type bumpers mainly include self-energy-absorbing, hydraulic buffer and airbag-type bumpers. [0003] Automobile bumper is a thin-arm structural part with large surface area and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22C1/06C22F1/047
CPCC22C1/026C22C1/03C22C1/06C22C21/08C22F1/047
Inventor 罗布湾
Owner CIXI YIMEIJIA ALUMINUM CO LTD
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