High-silicon aluminum alloy and preparation method thereof

A high-silicon aluminum alloy and aluminum-silicon alloy technology, which is applied in the direction of improving process efficiency, can solve the problems of reducing the surface finish of machined parts, being susceptible to force peeling, and reducing the mechanical properties of the alloy, and achieves a good effect of primary silicon refinement. , Good organization refinement effect, simple and easy process effect
CN112430758AInactive Publication Date: 2021-03-02东莞市兴茂压铸有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
东莞市兴茂压铸有限公司
Publication Date
2021-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of aluminum alloy forming processing, and particularly relates to a high-silicon aluminum alloy and a preparation method thereof. The preparation method comprises the following steps that (1), aluminum-silicon alloy melt is heated to 650 DEG C or above, and heat preservation is conducted; (2), a refining agent is added into the aluminum-silicon alloy melt obtained in the step (1), stirring is conducted at the same time, and then inclusion removal is conducted on the aluminum-silicon alloy melt obtained after refining; (3), a refiner is added into the aluminum-silicon alloy melt obtained in the step (2), stirring is conducted, and then a tool head of an ultrasonic instrument extends into the stirred aluminum-silicon alloy melt for ultrasonic treatment; and (4), the aluminum-silicon alloy melt obtained in the step (3) is cooled to 620-650 DEG C and subjected to heat preservation, and then the aluminum-silicon alloy melt is subjected to impurity removal and purification. Compared with the prior art, the preparation method of the high-silicon aluminum alloy is simple and feasible in process, low in production cost and good in primary siliconrefining effect.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy forming and processing, and in particular relates to a high-silicon aluminum alloy and a preparation method thereof. Background technique

[0002] Aluminum accounts for 8.13wt% of the total crust, and is one of the most abundant elements among metal elements. Aluminum and aluminum alloys have the characteristics of low density, light weight, high specific strength, good corrosion resistance, and excellent electrical and thermal conductivity. They are non-ferrous metal materials that are widely used in reality. With the rise of crude oil prices, the requirements of social environmental protection and the rapid development of manufacturing technology, under the requirements of energy saving, weight reduction and environmental protection, the materials used in transportation, aerospace and other industrial fields have increased the development of lightweight to achieve high strength, The purp...

Claims

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