Aluminum-silicon alloy for rheo-diecasting radiating shell and preparation method of aluminum-silicon alloy

Abstract

The invention discloses an aluminum-silicon alloy for a rheo-diecasting radiating shell. The aluminum-silicon alloy comprises components in percentage by mass as follows: 5.5%-8.0% of silicone, 0.1%-1.5% of copper, 0.1%-2.0% of zinc, 0.1%-2.0% of nickel, 0.1%-0.8% of magnesium, 0.1%-1.0% of iron and the balance of aluminum and inevitable trace impurities. The invention further discloses a preparation method of the aluminum-silicon alloy for the rheo-diecasting radiating shell. According to the preparation method, NO.1 solid metal is fed into No.2 liquid metal by a rod head, and slurry in a ladle is rapidly, efficiently and uniformly mixed under the action of blowing and stirring. The aluminum-silicon alloy has the advantages of high heat conductivity coefficient, good liquid liquidity and applicability to semi-solid state rheo-diecasting of the radiating shell. The preparation method is simple and easy to operate, the aluminum-silicon alloy has higher uniformity and liquidity by means of the prepared method, and the rheo-diecasting radiating shell is convenient to prepare.

Description

technical field [0001] The invention relates to one, in particular to an aluminum-silicon alloy of a rheological die-casting heat dissipation housing and a preparation method thereof. Background technique [0002] Communication equipment, especially wireless communication base stations, consume more and more power, which brings many difficulties to installation and transportation. Weight and volume have become one of its important competitiveness elements. Light weight, miniaturization, and high heat dissipation performance are its development trends. [0003] At present, the heat dissipation shell of wireless communication equipment is mainly produced by high-speed die-casting (die-casting for short). The size of the heat dissipation teeth and the wall is relatively thick. It is heavy. The commonly used materials for the heat dissipation shell are Japanese standard ADC12, national standard YL102 or European standard AlSi10Mg, the high thermal conductivity is 121W / (m.K), ...

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Problems solved by technology

[0003]At present, the heat dissipation housing of wireless communication equipment is mainly produced by high-speed die-casting (die-casting for short), and the heat dissipation teeth and walls are relatively thick. The thickness of the tooth tip of the cooling tooth is more than 1.6mm, because of its heavy weight

The commonly used materials for heat dissipation shells are Japanese standard ADC12, national standard YL102 or European standard AlSi10Mg. The high thermal conductivity is 121W / (m.K), and the lower one is only 92 W / (m.K). Therefore, the existing heat dissipation shell Generally speaking, the heat dissipation performance is deviated, and larger heat dissipation teeth are required to meet the heat dissipation requirements, so the volume is larger

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