Powder spraying, refining and calcium removing method used for aluminium alloy material

A technology of aluminum alloy materials and powder spraying, which is applied in the field of powder spraying, refining and decalcification of aluminum alloy materials, can solve the problems of undiscovered open patent documents for decalcification of aluminum alloy materials, poor quality of aluminum alloys, serious pollution, etc., and achieve shortening of smelting The effect of time, stable performance and high alloy quality

Active Publication Date: 2014-01-15
天津新立中合金集团有限公司
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Problems solved by technology

This traditional process has cumbersome steps, long time-consuming, high energy consumption, low efficiency, serious pollution, and the quality of the processed aluminum alloy is poor.
[0004] Through searching, no published patent literature on decalcification of aluminum alloy materials has been found

Method used

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  • Powder spraying, refining and calcium removing method used for aluminium alloy material

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Embodiment Construction

[0019] Below in conjunction with the examples, the present invention is further described, the following examples are illustrative, not limiting, and the protection scope of the present invention cannot be limited by the following examples.

[0020] A method for decalcifying aluminum alloy materials by powder spraying and refining, the specific steps are as follows:

[0021] (1) Weigh the refining agent and decalcifying agent according to 0.1%-0.2% of the weight of the aluminum liquid. The weight percentage of the decalcifying agent in the refining agent is 20-50%. Pour the refining agent and decalcifying agent into a mechanical stirrer and stir for 5 minutes , the refining agent and calcium remover are all in powder form;

[0022] (2) After the stirring is completed, dry the mixture of refining agent and decalcifying agent in a constant temperature preheating drying oven at a temperature of 200-250°C for 3-4 hours;

[0023] (3) When the temperature of the molten aluminum is ...

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Abstract

The invention relates to a powder spraying, refining and calcium removing method used for an aluminium alloy material. The method provided by the invention comprises the following steps of: placing a mixture of a powdery refining agent and a calcium removing agent into a refining and powder spraying machine, adjusting the nitrogen flow, the refining agent and the calcium removing agent, directly spraying powder to the bottom of a smelting furnace by utilizing nitrogen as a carrier, and degassing and removing impurities and calcium while the nitrogen floats upward from the bottom of the smelting furnace. By utilizing the method provided by the invention, molten aluminium degassing, deslagging and calcium removing processes are carried out at the same time, the efficiency is high, the refining effect is better, the smelting time of aluminium alloy is greatly shortened, the energy consumption is saved, the labour productivity is improved, and the alloy quality is obviously improved.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal smelting technology, relates to decalcification of aluminum alloys, in particular to a method for decalcification of aluminum alloy materials by powder spraying and refining. technical background [0002] Due to the characteristics of aluminum elements, aluminum alloys have a strong tendency to produce pores, and are also prone to oxidized inclusions. Therefore, preventing and removing gas and oxidized inclusions has become the most prominent problem in the aluminum alloy smelting process. Among them, the Ca element seriously affects the fluidity and mechanical properties of the alloy, and high-quality aluminum alloys have strict requirements on the Ca element. [0003] At present, domestic aluminum alloy ingot (liquid) manufacturers adopt the traditional decalcification method when producing high-quality aluminum alloy materials: first, put the cake-shaped decalcifier into the furnace to remove ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C21/00C22B21/06
Inventor 霍会娟翟盼盼艾振海王明立冯宝元刘庆阳
Owner 天津新立中合金集团有限公司
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