A vacuum flotation refining apparatus for aluminum alloy casting

By utilizing the synergistic effect of argon bubbles in a vacuum environment, the vacuum flotation refining device solves the problems of gas pollution and low equipment efficiency in the aluminum alloy smelting process under atmospheric conditions. It achieves efficient degassing and slag removal, reduces environmental pollution, and improves the quality of castings and production efficiency.

CN224455372UActive Publication Date: 2026-07-03HENAN PINGYUAN PHOTOELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202521680237.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-08
Publication Date
2026-07-03
Estimated Expiration
2035-08-08

AI Technical Summary

Technical Problem

Existing aluminum alloy smelting processes in atmospheric environments suffer from problems such as gas pollution, high environmental sensitivity, low equipment efficiency, and environmental pollution, making it difficult to achieve stable and efficient refining results.

Method used

The vacuum floating refining device, including a vacuum hood, robotic arm, argon cylinder and vacuum pump, removes hydrogen and oxide inclusions from the aluminum alloy liquid through the synergistic effect of the vacuum environment and argon bubbles, reducing the use of chemical refining agents.

Benefits of technology

It can efficiently remove hydrogen and oxide inclusions in a vacuum environment, improve the density and mechanical properties of castings, reduce environmental pollution, meet the requirements of green manufacturing, and improve production efficiency and metal utilization.

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Abstract

This utility model relates to the field of refining equipment technology, specifically a vacuum flotation refining device for aluminum alloy casting. It includes a working platform, a melting crucible, a vacuum hood, a robotic arm, an argon cylinder, and a vacuum pump. The vacuum hood is connected to the movable end of the robotic arm. A motor is fixed to the top of the vacuum hood, and the motor's output shaft is connected to a hollow stirring shaft via a gear transmission assembly. The hollow stirring shaft passes through the vacuum hood and is rotatably sealed to it. The lower end of the hollow stirring shaft extends into the melting crucible, and a hollow stirring rod is provided on the shaft. Exhaust holes are evenly distributed on the hollow stirring rod. A gas supply pipeline is connected to the top of the hollow stirring shaft via a rotary joint, and this pipeline is connected to the argon cylinder. The vacuum flange on the vacuum hood is connected to the vacuum pump via a suction pipe. This device has advantages such as high refining efficiency and environmental friendliness. It can achieve efficient degassing and slag removal of aluminum alloy solutions and can remove alkali metals and low-melting-point harmful trace elements.
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