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Production technology of high-strength rare earth aluminum alloy applied to automotive pedal

A technology of automobile pedals and production technology, which is applied in the direction of anodic oxidation, etc., which can solve the problems of unfavorable development direction of automobile lightweight, long-term use, easy to rust, and insufficient strength, etc., to improve thermal processing performance and reduce raw material cost, productivity improvement effect

Active Publication Date: 2013-07-17
CHENGDU SUNSHINE ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to insufficient strength, long-term use and easy rust, aluminum alloys are seldom used as car pedals and stainless steel materials are mostly used.
Stainless steel pedals are not easy to rust, but they are more expensive and of high quality, which is not conducive to the development direction of automobile lightweight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 : The production process of high-strength rare-earth aluminum alloy suitable for automobile pedals, which includes the following steps:

[0031] S1: Ingredients: Industrial pure aluminum with a mass fraction of 99.7%, Al-rare earth master alloy, industrial magnesium ingot and aluminum-silicon master alloy ingot are used as raw materials for the furnace charge, and the amount of materials used is calculated according to the composition ratio of the alloy, and a suitable covering is selected. agent and coating, the ingredients of the raw materials are: the main impurity elements in industrial pure aluminum (99.7%) and their weight percentages are: Ti: 0.003%, B: 0.0005%, Fe: 0.154%, Si: 0.109%, Cu: 0.002%, V: 0.102%, C: 0.001%;

[0032] The composition and weight percentage of Al-rare earth master alloy are: rare earth element: 10.23%, Ca: 0.03%, Mg: 0.025%, Cu: 0.01%, Fe: 0.22%, Si: 0.12%, Al: balance;

[0033] The composition and weight percentage of ind...

Embodiment 2

[0049] Example 2 : The production process of high-strength rare-earth aluminum alloy suitable for automobile pedals, which includes the following steps:

[0050] S1: Ingredients: Industrial pure aluminum with a mass fraction of 99.7%, Al-rare earth master alloy, industrial magnesium ingot and aluminum-silicon master alloy ingot are used as raw materials for the furnace charge, and the amount of materials used is calculated according to the composition ratio of the alloy, and a suitable covering is selected. agent and coating, the ingredients of the raw materials are: the main impurity elements in industrial pure aluminum (99.7%) and their weight percentages are: Ti: 0.003%, B: 0.0005%, Fe: 0.154%, Si: 0.109%, Cu: 0.002%, V: 0.102%, C: 0.001%;

[0051] The composition and weight percentage of Al-rare earth master alloy are: rare earth element: 10.23%, Ca: 0.03%, Mg: 0.025%, Cu: 0.01%, Fe: 0.22%, Si: 0.12%, Al: balance;

[0052] The composition and weight percentage of in...

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Abstract

The invention discloses a production technology of high-strength preparing the components of the aluminum alloy including, based on the mass percentage, 0.508% of Si, 0.886% of Mg , 0.157% of Cr, 0.289 of Cu, 0.192 of Fe, 0.2% of RE , 0.1% of the rest impurities and the balance of Al; S2, melting and pouring at the temperature of 720 DEG C-730 DEG C for 1 minute; S3: extrusion molding; S4: on-line quenching; S5: artificial aging, that is heat preservation for 2.5-3.5h at a temperature of 190-210 DEG C; S6, anode oxidation; S7, spray coating with polyester powder. According to the invention,the contents of Mg and Al are controlled strictly to improve the hot-working property of the alloy; and an appropriate amount of rare earth element is added in the melting and pouring process to improve the plastic processing property and mechanical property.

Description

technical field [0001] The invention relates to a production process of a high-strength rare earth aluminum alloy suitable for automobile pedals. Background technique [0002] Aluminum is an extremely abundant metal element on the earth, and has high specific strength and elastic modulus, high electrical conductivity and high thermal conductivity, and excellent corrosion resistance. In 1921, the world's aluminum output was 203,000 tons, in 1988 it reached 17.8 million tons, and in 2003 it reached 24 million tons. The scale of my country's aluminum industry ranks third in the world, with an annual production capacity of 4 million tons of electrolytic aluminum. Aluminum has become the second largest metal material after steel in my country, and it plays an increasingly important role in modern national life. [0003] For automobiles, environmental protection and safety have become the top priority. Whether it is from the perspective of energy saving and emission reduction or...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C21/00C22F1/04C22C21/08C22F1/047C25D11/04
Inventor 廖健
Owner CHENGDU SUNSHINE ALUMINUM
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