Long-acting composite type graphite stirring device for aluminum alloy refining and preparation method

Abstract

The invention relates to a long-acting composite type graphite stirring device for aluminum alloy refining and a preparation method. The long-acting composite type graphite stirring device comprises ahollow shaft, a lower layer straight blade spiral mixed-flow impeller, a lower sleeve, a multi-aperture blade, an upper sleeve and an upper layer straight blade spiral mixed-flow impeller, and the lower layer straight blade spiral mixed-flow impeller, the lower sleeve, the multi-aperture blade, the upper sleeve and the upper layer straight blade spiral mixed-flow impeller are installed on the hollow shaft. The straight blade spiral mixed-flow impellers are mainly composed of straight blade radial flow type blades and spiral face axial water guide blades with log spirals as molded lines. The stirring impeller structure is improved, advantages of axial flow type and radial flow type stirring impellers are combined, the multi-aperture blade is added, thus aluminum alloy melt can be dispersedinto small-size fluid masses effectively, and the stirring and mixing uniformity of aluminum alloy components is improved. In addition, metallization modified treatment is conducted on the surface ofthe graphite stirring device, a novel TiC coating material is adopted for replacing a traditional coating material, oxidation resistance and corrosion resistance of the graphite stirring device are enhanced, and the inherent defects of an existing graphite stirring device are overcome radically.

Description

technical field [0001] The invention relates to a long-acting composite graphite stirring device for aluminum alloy refining and a preparation method thereof, belonging to the technical field of aluminum alloy melting and casting. Background technique [0002] Existing technologies related to the long-term composite graphite stirring device and preparation method for aluminum alloy refining, such as: "A Whole Body for Purifying Aluminum Melt" disclosed in the Chinese Invention Patent (Patent No. 201610704027.8) applied by Xi'an Chaoma Technology Co., Ltd. Carbon-ceramic composite material rotor and its preparation method”, which specifically relates to an integral carbon-ceramic composite material rotor for aluminum melt purification and its preparation method. Another example: "A Method for Preparing Graphite Rotors Using Waste Graphite Cathodes of Aluminum Electrolyzers" disclosed in the Chinese invention patent (application number 201611106412.9) applied by Shenyang Unive...

AI Technical Summary

Problems solved by technology

In addition, the surface of the graphite stirring device is metallized and modified, and a new type of TiC coating material is used to replace the traditional coating material, which enhances the oxidation resistance and corrosion resistance of the graphite stirring device, and fundamentally solves the problem of the existing graphite stirring device itself. inherent flaw

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