High-silicon aluminum alloy and preparation method thereof

Abstract

The invention discloses a high silicon-aluminum alloy and a method for preparation, in particular to the high-silicon aluminum alloy with excellent wear resistance and a method for preparation. The invention comprises 10.5-11.2 percent of silicon powder, 2.2-2.7 percent of copper clad aluminum alloy, 0.2-0.5 percent of magnesium, 85.6-87.1 percent of aluminum, which are made through melting, mixing, first refining, second refining and casting. The high silicon-aluminum alloy has excellent wear resistance, high tensile strength and high tensile strength, and is capable of meeting the performance requirements of an air conditioner of an automobile.

Description

technical field [0001] The invention relates to an aluminum alloy and a manufacturing method thereof. Specifically, it is a high-silicon aluminum alloy with excellent wear resistance and a preparation method thereof. Background technique [0002] As we all know in the machinery manufacturing industry, the requirements for the wear resistance, tensile strength and Brinell hardness of aluminum alloys are getting higher and higher. At present, the high-silicon aluminum alloys used in the machinery manufacturing industry such as the automotive air conditioner manufacturing industry are 4004 aluminum-silicon alloys and 4032 aluminum-silicon alloys produced in accordance with GBT3190-1996, while 4004 aluminum-silicon alloys and 4032 aluminum-silicon alloys The contents of silicon are respectively 9.0% by weight to 10.5% by weight and 11.0% by weight to 13.5% by weight. Al-silicon alloys with silicon content less than or equal to 10% by weight are hypoeutectic Al-silicon alloys, ...

AI Technical Summary

Problems solved by technology

The traditional methods to reduce slag and gas content are to use filter cloth or single-stage ceramic filter, and the filter effect is poor

Therefore, the high-silicon aluminum alloy made has poor wear resistance.