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A kind of aluminum profile of auto parts and preparation method thereof
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A technology for auto parts and aluminum profiles, applied in the field of aluminum profiles, can solve the problems that 6000 series aluminum alloys are difficult to meet the requirements, and the strength, toughness, wear resistance and corrosion resistance are demanding.
Active Publication Date: 2016-03-09
龙口市丛林铝材有限公司
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Conventional 6000 series aluminum alloys have been widely used in automotive decorative materials and automotive structural materials, but as automotive functional materials, regardless of strength, toughness, wear resistance, corrosion resistance, impact resistance, conventional 6000 series aluminum alloys difficult to meet the requirements
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Embodiment 1
[0029] An aluminum profile for auto parts, which contains the following substances in mass percentages:
[0030] Si1.00-1.30%, Cu0.4-0.55%, Mn0.30-0.40%, Mg0.50-0.60%, Cr0.20-0.30%, Ti0.02-0.04%, the rest is aluminum;
[0031] Various components in the prior art aluminum alloy: Si0.60-0.70%, Cu0.20-0.30%, Fe≤0.35%, Mn≤0.10%, Mg1.0-1.1%, Cr0.05-0.08%, Ti≤0.10 %, others are aluminum, and the present invention just adjusts the composition of this prior art.
[0032] A method for preparing aluminum profiles for auto parts, comprising the steps of:
[0048] A method for preparing aluminum profiles for auto parts, comprising the steps of:
[0049] (1) Melting
[0050] Put aluminum ingots, first-class scrap, Si, Cu, Mn, Mg, Cr, etc. into the melting furnace, of which the first-class scrap is 50%, Si, Cu, Mn, Mg, Cr are added in the form of master alloys, and the melting temperature is 720- 760°C, the chemical composition before the furnace is shown in Table 2:
[0051] Table 2. The proportions of each component in the aluminum alloy in Example 2 (unit: %)
[0054] The smelted aluminum liquid is transferred to the refining furnace, and the refining temperature is controlled at 730-740 ° C. Add refining agent at 2 kg / t, refining for 30 minutes, and evenly sprinkle 8-10 kg of common covering agent on the surface of the melt, and let it stand for 30 minutes to maintain the temperature. At 735-740°C, use a degasser to degas and purify, the speed is above 450r / min...
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Abstract
The invention discloses an automobile part aluminum profile which is characterized by containing the following metallic substances in percentage by mass: 1.00-1.30% of Si, 0.4-0.55% of Cu, 0.10-0.20% of Fe, 0.30-0.40% of Mn, 0.50-0.60% of Mg, 0.20-0.30% of Cr, 0.02-0.04% of Ti, at most 0.03% of Zn, at most 0.10% of all impurities (at most 0.03% of each single impurity), and the balance of Al. The invention also discloses a preparation method of the automobile part aluminum profile. The aluminum alloy has obviously higher mechanical property, friction resistance and corrosion resistance than common 6000 aluminum alloys; and the mechanical property of the aluminum alloy is 20% higher than that of the 6061 alloy.
Description
technical field [0001] The invention relates to an aluminum profile, in particular to an aluminum profile used for auto parts and a preparation method thereof. Background technique [0002] In addition to the advantages of low density, good electrical conductivity, high thermal conductivity, and corrosion resistance, aluminum alloys also have the characteristics of high specific strength and specific stiffness, good processing and forming properties, etc. Therefore, aluminum alloys have begun to replace steel materials and are widely used in In automobile manufacturing, the application of aluminum alloy materials in automobiles is mainly divided into three aspects: ①Automotive decoration materials; ②Automotive structural materials; ③Automotive functional materials. Among them, the requirements for automotive functions are the most stringent. Conventional 6000 series aluminum alloys have been widely used in automotive decorative materials and automotive structural materials,...
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