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Aluminum-magnesium-silicon alloy for control arm of domestic automobile and preparation method thereof

A family car, aluminum-magnesium-silicon technology, which is applied in the field of aluminum-silicon-magnesium alloys, can solve problems such as suboptimal alloy formulations, reduced corrosion resistance, and increased production costs, and achieve the goals of improving various performances, reducing weight, and saving costs Effect

Active Publication Date: 2017-09-29
JIANGSU ASIA PACIFIC ANSINDAR ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These patents increase the copper content, although the strength is improved, but the corrosion resistance is reduced and the production cost is increased, and because the alloy formula is not optimal, coarse grains are likely to be produced in the subsequent forging process of the control arm, resulting in a decrease in performance

Method used

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  • Aluminum-magnesium-silicon alloy for control arm of domestic automobile and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The applicant provides an aluminum-magnesium-silicon alloy for the control arm of a family car, which is composed of the following raw materials: silicon: 110kg, copper: 4kg, manganese: 70kg, magnesium: 70kg, chromium: 16kg, zirconium: 2kg, aluminum: 9728kg .

[0025] The preparation method of the aluminum-magnesium-silicon alloy is:

[0026] (1) First put the aluminum ingot into the melting furnace for melting, the melting temperature control range is 760°C, and the melting time is 3 hours, open the furnace door and rake the ash into the bottom of the furnace to see if it is completely melted; after all the materials in the furnace are completely melted , turn on the electromagnetic stirring device, and stir for 15 minutes;

[0027] (2) Then add a refining agent, carry out the first refining of the aluminum liquid with nitrogen at a pressure of 0.08-0.12Mpa for 20 minutes, and then carry out slag removal;

[0028] (3) After removing slag, add copper, manganese, chrom...

Embodiment 2

[0034] The applicant provides an aluminum-magnesium-silicon alloy for the control arm of a family car, which is composed of the following raw materials: silicon: 125kg, copper: 8kg, manganese: 85kg, magnesium: 90kg, chromium: 20kg, zirconium: 4kg, aluminum: 9668kg .

[0035] The preparation method of the aluminum-magnesium-silicon alloy is:

[0036] (1) First put the aluminum ingot into the melting furnace for melting, the melting temperature control range is 720°C, and the melting time is 4 hours, open the furnace door and rake the ash into the bottom of the furnace to see if it is completely melted; after all the materials in the furnace are completely melted , turn on the electromagnetic stirring device, and stir for 20 minutes;

[0037] (2) Add refining agent then, carry out first refining 15 minutes to molten aluminum with the nitrogen of pressure 0.08-0.12Mpa, then carry out slag removal;

[0038] (3) After removing slag, add copper, manganese, chromium, zirconium allo...

Embodiment 3

[0044] The applicant provides an aluminum-magnesium-silicon alloy for the control arm of a family car, which is composed of the following raw materials: silicon: 119kg, copper: 6kg, manganese: 80kg, magnesium: 80kg, chromium: 18kg, zirconium: 3kg, aluminum: 9694kg .

[0045] The preparation method of the aluminum-magnesium-silicon alloy is:

[0046] (1) First put the aluminum ingot into the melting furnace for melting, the melting temperature control range is 740°C, and the melting time is 3.5 hours. Open the furnace door and rake the ash into the bottom of the furnace to see if it is completely melted; after all the materials in the furnace are completely melted , turn on the electromagnetic stirring device, and stir for 18 minutes;

[0047] (2) Then add a refining agent, use nitrogen with a pressure of 0.08-0.12Mpa to refine the aluminum liquid for the first time for 15-20 minutes, and then carry out slag removal;

[0048] (3) After removing slag, add copper, manganese, ch...

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Abstract

A family car control arm aluminum-magnesium-silicon alloy comprises 1.1-1.25 wt% of silicon, 0.04-0.08 wt% of copper, 0.7-0.85 wt% of manganese, 0.7-0.9 w% of magnesium, 0.16-0.2 wt% of chromium, 0.02-0.04 wt% of zirconium, and the balance of Al. The aluminum-magnesium-silicon alloy prepared in the invention can substitute cast iron in family car control arms, and has the characteristics of environmental protection, high strength, light weight and fuel saving.

Description

technical field [0001] The invention relates to the technical field of alloy casting, in particular to an aluminum-silicon-magnesium alloy used for a control arm of an automobile suspension system. Background technique [0002] The control arm is one of the main components of the automobile suspension system, and it is an important component to ensure safety. The control arm made of cast iron has occupied the market for a long time. Although the rigidity and hardness of cast iron are relatively good, it is not easy to deform, but it is brittle. Recently, the development of control arms made of aluminum-magnesium-silicon alloy materials has become a hot spot. Aluminum alloy has low density, high strength, close to or surpasses cast iron, and high plasticity; it has excellent electrical conductivity, thermal conductivity and corrosion resistance; it is expected to become the main material of the control arm in the future. [0003] The patent whose application number is CN201...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02
CPCC22C1/026C22C21/02
Inventor 孙浩明高贵军
Owner JIANGSU ASIA PACIFIC ANSINDAR ALUMINUM
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