A kind of casting aluminum-silicon alloy and preparation method thereof

A technology for casting aluminum-silicon alloys and intermediate alloys, which is applied in the field of metal materials, can solve the problems of poor heat dissipation and toughness of aluminum-silicon alloys, and cannot meet the needs of aluminum-silicon alloys, and achieve improved toughness, improved Fe phase morphology, and low thermal cracking effect of propensity

Active Publication Date: 2022-04-15
成都慧腾创智信息科技有限公司
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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of poor heat dissipation and toughness of existing aluminum-silicon alloys, which cannot meet the needs of aluminum-silicon alloys in the photovoltaic field, and provide a cast aluminum-silicon alloy and its Preparation

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  • A kind of casting aluminum-silicon alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 8.5%; Fe: 0.1%; Co: 0.15%; Eu: 0.12%; B: 0.04%; La: 0.09%; Zn: 0.2% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.

[0039] The preparation method of the cast aluminum-silicon alloy is:

[0040] (1) According to the set chemical composition, weigh industrial pure aluminum, crystalline silicon, Al-20Fe master alloy, Al-10Co master alloy, Al-3B master alloy, Al-La master alloy, pure zinc, Al -Eu master alloy. Wash and dry the weighed raw materials for later use.

[0041] (2) Melt industrial pure aluminum preheated to 150°C in a smelting furnace at a melting temperature of 780°C. After melting, add 0.4% slag removal agent based on the mass of the aluminum ingot, stir for 20 minutes, and keep warm for 30 minutes after removing slag ;

[0042] (3) After cooling the melt in step (2) to 750°C, add crystalline silicon, Al-20Fe master alloy, and Al-10Co master...

Embodiment 2

[0046] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 9.0%; Fe: 0.1%; Co: 0.16%; Eu: 0.13%; B: 0.04%; La: 0.08%; Zn: 0.3% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.

[0047] The preparation method is the same as in Example 1.

Embodiment 3

[0049] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 9.5%; Fe: 0.15%; Co: 0.23%; Eu: 0.14%; B: 0.04%; La: 0.1%; Zn: 0.4% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.

[0050] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a casting aluminum-silicon alloy and a preparation method thereof. The cast aluminum-silicon alloy includes the following components in terms of mass percentage: Si: 8.5-10.5%; Fe: 0.1-0.2%; Co: 0.15-0.32%; B: 0.04-0.15%; mixed rare earth: 0.2-0.3% %; Zn: 0.1-0.5%; unavoidable impurities: less than 0.15%; the balance is Al. The aluminum-silicon alloy of the invention has high thermal conductivity and toughness, good fluidity and is easy to form complex thin-walled parts, and can meet the use requirements of the photovoltaic field.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a casting aluminum-silicon alloy and a preparation method thereof. Background technique [0002] The rapid promotion of photovoltaic power generation requires higher and higher heat dissipation capabilities of photovoltaic inverters. Photovoltaic inverters often need to be installed in harsh outdoor environments, and their product sealing must meet the level of IP67 or higher. This high sealing provides good protection for the electronic components inside the inverter, but it will also cause internal damage in extreme cases. The high heat and pressure are difficult to release. In order to avoid brittle bursting of the inverter in extreme cases, the die-casting aluminum-silicon alloy heat dissipation shell is also required to have good toughness, so that it can release the pressure through sufficient deformation under the impact load of the explosion, that is, ductile cra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/06B22D17/00
CPCC22C21/04C22C1/03C22C1/026C22C1/06B22D17/00
Inventor 孙自来
Owner 成都慧腾创智信息科技有限公司
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