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A high thermal conductivity and high toughness die-casting aluminum-silicon alloy and its preparation method

A technology with high toughness and high thermal conductivity, applied in the field of metal materials, can solve the problems of poor thermal conductivity and toughness that cannot meet the requirements of communication, automobile, and photovoltaic applications, and achieve shortened preparation time, high thermal conductivity and toughness, and high toughness. Effect

Active Publication Date: 2022-03-15
成都慧腾创智信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 problem that the existing die-casting aluminum-silicon alloy has poor thermal conductivity and toughness, and cannot meet the application problems in the fields of communications, automobiles, and photovoltaics, and provides a die-casting aluminum alloy with high thermal conductivity and high toughness. Silicon alloy and its preparation method

Method used

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  • A high thermal conductivity and high toughness die-casting aluminum-silicon alloy and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A die-casting aluminum-silicon alloy with high thermal conductivity and high toughness, comprising the following components by mass percentage, Si: 12.6%; Fe: 0.5%; Co: 0.5%; Sr: 0.02%; B: 0.08%; La: 0.16%; Zn : 0.5%; Cr+Mn+V+Ti content is less than 0.01%, and the balance is Al.

[0039] Its preparation method is:

[0040] (1) According to the set chemical composition, weigh industrial pure aluminum, crystalline silicon, Al-10Co master alloy, pure zinc, Al-20Fe master alloy, Al-3B master alloy, Al-Sr master alloy, Al -La master alloy. The above alloys are cleaned and dried for later use.

[0041] (2) Melt industrial pure aluminum preheated to 150°C in a smelting furnace, the melting temperature is 780°C, add 0.4% slag remover of the mass of the aluminum ingot after melting, stir with a graphite rod for 20 minutes, remove slag Then keep warm for 20 minutes.

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

Embodiment 2

[0046] A die-casting aluminum-silicon alloy with high thermal conductivity and high toughness, comprising the following components by mass percentage, Si: 12.6%; Fe: 0.4%; Co: 0.36%; Sr: 0.04%; B: 0.06%; La: 0.13%; Zn : 0.4%; Cr+Mn+V+Ti content is less than 0.01%, and the balance is Al.

[0047] The preparation method of the die-casting aluminum-silicon alloy is the same as that in Example 1.

Embodiment 3

[0049] A die-cast aluminum-silicon alloy with high thermal conductivity and high toughness, comprising the following components in terms of mass percentage, Si: 12%; Fe: 0.3%; Co: 0.33%; Sr: 0.03%; B: 0.03%; La: 0.09%; Zn : 0.2%; Cr+Mn+V+Ti content is less than 0.01%, and the balance is Al.

[0050] The preparation method of the die-casting aluminum-silicon alloy is the same as that in Example 1.

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Abstract

The invention discloses a die-cast aluminum-silicon alloy with high thermal conductivity and high toughness and a preparation method thereof. The high thermal conductivity and high toughness die-casting aluminum-silicon alloy includes the following components by mass percentage: Si: 11-13wt%; Fe: 0.15-0.5wt%; Co: 0.2-0.65wt%; Sr: 0.02-0.08wt%; B : 0.03~0.1wt%; La: 0.01~0.18wt%; Zn: 0.05~0.5wt%; unavoidable impurity content is less than 0.15%; the balance is Al. Wherein the mass ratio of Co and Fe is 0.9-1.2:1. In the present invention, by adding alloy element Si, adding Fe, Co, Zn elements, and adding traces of B, La, and Sr elements, the aluminum-silicon alloy has a narrow solidification interval, the melt has excellent fluidity, and significantly improves The toughness of the aluminum-silicon alloy makes the prepared aluminum-silicon alloy have high thermal conductivity and toughness, which can meet the application in communication, automobile, photovoltaic and other industries.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a die-cast aluminum-silicon alloy with high thermal conductivity and high toughness and a preparation method thereof. Background technique [0002] With the development of modern industry, the heat dissipation in communication, automobile, photovoltaic and other industries is increasing, and the requirements for thermal conductivity of materials are getting higher and higher. Among them, in the application of 5G communication technology, the power and heat generation of 5G communication base stations are greatly improved compared with previous 4G communication base stations. In the automotive industry, especially new energy pure electric vehicles, the heat dissipation of batteries and power components is even more related to product safety. The rapid promotion of photovoltaic power generation requires higher and higher heat dissipation capabilities of photovoltaic invert...

Claims

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Application Information

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