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AlSi9 aluminum alloy material, and preparation method and application thereof

A technology of aluminum alloy materials and raw materials, which is applied in the field of AlSi9 aluminum alloy materials and its preparation and application, can solve the problems of low yield strength of shock absorbing parts, high part defective rate, expensive parts, etc., and achieve low production cost and no burrs , the effect of improving work efficiency

Inactive Publication Date: 2017-04-19
SHANGHAI JINTUO METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the low yield strength and low elongation of shock absorbing parts made of existing aluminum alloy materials, as well as the low production efficiency of the forging or casting process, the high price of the parts, or the The defect rate of parts produced by the combination of die-casting + T6 heat treatment is high, and the structure of the parts is limited by the need for T6 heat treatment. An AlSi9 aluminum alloy material and its preparation method and application are provided.

Method used

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  • AlSi9 aluminum alloy material, and preparation method and application thereof
  • AlSi9 aluminum alloy material, and preparation method and application thereof
  • AlSi9 aluminum alloy material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Preparation method of AlSi9 aluminum alloy material:

[0037] (1) The crystalline silicon, copper, iron, and aluminum are first screened and cleaned, and the target ingredients are mixed according to the target composition in Table 1, and then manganese is added to obtain a mixture;

[0038] Among them, the content of silicon in crystalline silicon is ≥98wt%. In copper, the content of copper is ≥95wt%; in iron, the content of iron is ≥95wt%. Aluminum includes pure aluminum, raw aluminum and cooked aluminum. In pure aluminum, the content of iron is ≤0.1wt%; in cooked aluminum, the content of iron is ≤1.0wt% and the content of lead is ≤0.2wt%; in raw aluminum, The content of iron element is ≤1.5wt%, and the content of lead element is ≤0.2wt%.

[0039] Among them, the purpose of screening is to remove the fine ash in the raw materials; the purpose of cleaning is to clean the raw materials; the purpose of sieving is to make the zinc content ≤0.1wt%;

[0040] In the manganese agen...

Embodiment 2

[0050] Preparation method of AlSi9 aluminum alloy material:

[0051] (1) The crystalline silicon, copper, iron, and aluminum are first screened and cleaned, and the target ingredients in Table 2 are mixed, and then manganese is added to obtain a mixture;

[0052] Among them, the content of silicon in crystalline silicon is ≥98wt%. In copper, the content of copper is ≥95wt%; in iron, the content of iron is ≥95wt%. Aluminum includes pure aluminum, raw aluminum and cooked aluminum. In pure aluminum, the content of iron is ≤0.1wt%; in cooked aluminum, the content of iron is ≤1.0wt% and the content of lead is ≤0.2wt%; in raw aluminum, The content of iron element is ≤1.5wt%, and the content of lead element is ≤0.2wt%.

[0053] Among them, the purpose of screening is to remove the fine ash in the raw materials; the purpose of cleaning is to clean the raw materials; the purpose of sieving is to make the zinc content ≤0.1wt%;

[0054] In the manganese agent, the manganese content is about 75...

Embodiment 3

[0064] In Example 3, the preparation method is the same as that in Example 1, except that the ingredients are prepared according to the target ingredients in Table 3.

[0065] The AlSi9 aluminum alloy material prepared in Example 3 was subjected to composition analysis, and the test results are shown in Table 3. Among them, the material analysis instrument is a German direct-reading spectrometer, brand Spectro.

[0066] table 3

[0067]

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Abstract

The invention discloses an AlSi9 aluminum alloy material, and a preparation method and application thereof. The AlSi9 aluminum alloy material comprises, by mass, 10 to 11% of Si, no more than 0.1% of Cu, 0.3 to 0.45% of Mg, no more than 0.1% of Zn, 0.25 to 0.45% of Fe, 0.3 to 0.5% of Mn, no more than 0.05% of Ni, no more than 0.05% of Sn and 0.15 to 0.25% of Ti, with the balance being Al. The AlSi9 aluminum alloy material has yield strength of 190 MPa or above, elongation percentage of 8% or above, tensile strength of 300 MPa or above, good comprehensive performance and low production cost; and the AlSi9 aluminum alloy material can be prepared only through a common high-pressure die-casting process and be extensively applied to preparation of automotive damping parts, so preparation flow is simplified, high work efficiency is obtained, and cost is reduced.

Description

Technical field [0001] The invention relates to an AlSi9 aluminum alloy material and a preparation method and application thereof. Background technique [0002] With the requirements for lightweight cars, the requirements for materials used in auto parts are getting higher and higher. The shock absorption system is an important part of the car. Because it can reduce the bumps during the car driving and can protect other parts from damage, these effects also determine the material performance of the neutron parts of the shock absorption system. Requirements. [0003] The existing vibration damping parts are mostly replaced by aluminum alloys, but because the shock absorbers have strict requirements on yield strength and elongation performance, the parts preparation (manufacturing) process mostly uses forging, casting + T6 heat treatment or die casting + T6 heat treatment (T6 heat treatment is "Solid solution treatment + artificial aging" process) combined method. However, the pro...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02C22C1/06
CPCC22C1/026C22C1/06C22C21/02
Inventor 张东
Owner SHANGHAI JINTUO METAL PROD
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