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Aluminum alloy for automobile body and preparing method and application of aluminum alloy

A technology of automobile body and aluminum alloy, applied in vehicle parts, transportation and packaging, superstructure, etc., can solve the problems of aluminum alloy surface corrosion, and achieve the effect of good buffer recovery ability, high hardness and strong collision absorption ability.

Inactive Publication Date: 2017-06-30
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an aluminum alloy for automobile body and its preparation method and application. The present invention solves the problem of serious surface corrosion of traditional aluminum alloys, and the parameters of all raw materials are strictly controlled. , prevent segregation and dissociation of aluminum alloy, and prevent excessive pitting corrosion of hard poles

Method used

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  • Aluminum alloy for automobile body and preparing method and application of aluminum alloy
  • Aluminum alloy for automobile body and preparing method and application of aluminum alloy
  • Aluminum alloy for automobile body and preparing method and application of aluminum alloy

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Effect test

Embodiment 1

[0036] The raw materials of the car body use the following components by mass percentage: Cu 1.2%, Mg 0.5%, Cr 0.5%, Si 1.8%, C 0.5%, Ti 0.3%, Be 0.1%, Ni 1.0%, Sc 0.5%, Zn 1.5%, W 1.5%, Eu0.2%, the balance is Al. In this embodiment, the method for preparing the body of the automobile body includes the following steps: first weigh each raw material component according to the above-mentioned mass percentage; then first put the weighed Al into a high-temperature furnace and heat it to 700°C to melt it completely, and then The weighed raw materials are added to the high-temperature furnace in the order of melting point, and heated until the raw materials in the furnace are completely melted. The high-temperature furnace is sealed, and the slag and gas in the melt are refined and removed; then the melt is poured into the deep well In the casting mold, cool and cast into a round cast rod; then use an extruder to extrude the heated round cast rod from the automobile body mold to form...

Embodiment 2

[0038] The raw materials of the car body use the following components by mass percentage: Cu 1.8%, Mg 0.9%, Cr0.5%, Si 2.0%, C 1%, Ti 0.3%, Be 0.1%, Ni 1.2%, Sc 0.7%, Zn 1.2%, W 1.6%, Eu0.5%, the balance is Al. In this embodiment, the method for preparing the body of the automobile body includes the following steps: first weigh the raw material components according to the above-mentioned mass percentage; then put the weighed Al into a high-temperature furnace and heat it to 750°C to melt it completely, and then The weighed raw materials are added to the high-temperature furnace in the order of melting point, and heated until the raw materials in the furnace are completely melted. The high-temperature furnace is sealed, and the slag and gas in the melt are refined and removed; then the melt is poured into the deep well In the casting mold, cool and cast into a round cast rod; then use an extruder to extrude the heated round cast rod from the automobile body mold to form an autom...

Embodiment 3

[0040] The raw materials of the car body use the following components by mass percentage: Cu 1.8%, Mg 0.3%, Cr 0.5%, Si 1.8%, C 0.8%, Ti 0.4%, Be 0.2%, Ni 1.4%, Sc 0.6%, Zn 1.4%, W 1.5%, Eu 0.4%, the balance is Al. In this embodiment, the method for preparing the body of the automobile body includes the following steps: first weigh each raw material component according to the above-mentioned mass percentage; then first put the weighed Al into a high-temperature furnace and heat it to 680°C to melt it completely, and then The weighed raw materials are added to the high-temperature furnace in the order of melting point, and heated until the raw materials in the furnace are completely melted. The high-temperature furnace is sealed, and the slag and gas in the melt are refined and removed; then the melt is poured into the deep well In the casting mold, cool and cast into a round cast rod; then use an extruder to extrude the heated round cast rod from the automobile body mold to for...

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Abstract

The invention belongs to an aluminum alloy for an automobile body and a preparing method and application of the aluminum alloy. The aluminum alloy for the automobile body comprises, by mass percent, 1.2%-2.3% of Cu, 0.3%-0.9% of Mg, 0.3%-0.5% of Cr, 1.5%-2.2% of Si, 0.5%-1% of C, 0.3%-0.4% of Ti, 0.1%-0.3% of Be, 1.0%-1.5% of Ni, 0.5%-0.7% of Sc, 1.2%-1.5% of Zn, 1.5%-1.8% of W, 0.2%-0.8% of Eu and the balance Al. By means of the aluminum alloy for the automobile body and the preparing method and application of the aluminum alloy, the problem of the serious corrosion phenomenon of the surface of a traditional automobile body shell aluminum alloy is solved, parameters of all raw materials are strictly controlled, segregation and dissociation of the aluminum alloy are prevented, and excessive hard pole pitting is prevented; and the hardness of the aluminum alloy is high, and the materials are not prone to sinking or damage.

Description

Technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an aluminum alloy for automobile body and a preparation method and application thereof. Background technique [0002] Most of the existing car bodies use aluminum alloy materials, which are composed of different elements, including Cu, Mg, Mn, Fe, Si, Zn, Ti, and sometimes Ni and Cr can be added. As we all know, the electrochemical sequence of aluminum is very negative, only higher than that of magnesium, and other elements are higher than aluminum, especially copper, which has a very positive electrochemical sequence, and electrochemical corrosion will occur if it contacts the negative metal aluminum. However, in order to increase the hardness of the car body, Cu and Mg must be added. For example, the existing duralumin for aircraft is a magnesium-aluminum-copper alloy, which can improve the strength and hardness of the alloy and has good cutting performance. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18C22C21/02C22C21/00C22C1/02B62D29/00
CPCC22C21/18B62D29/008C22C1/026C22C21/00C22C21/02C22C21/14C22C21/16
Inventor 杨娜冯钊李秀芬夏卿张婕姝李龙王萌
Owner HUANGHE S & T COLLEGE
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