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Refining method of aluminum alloy for experiment

An aluminum alloy and experimental technology, which is applied in the field of metallurgical technology, can solve the problems of inability to realize online exhaust, casting rod pores, and many slag inclusions, so as to protect the test environment and the health of the staff, good slag removal effect, and eliminate pores Effect

Active Publication Date: 2016-05-11
YINGKOU ZHONGWANG ALUMINUM CO LTD
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Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide an experimental aluminum alloy refining method to solve the problems that online exhaust cannot be realized during the small-scale aluminum alloy casting test process, and there are many pores and slag inclusions in the cast rod.

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  • Refining method of aluminum alloy for experiment

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] The aluminum alloy refining method used in the experiment of this embodiment comprises the following steps:

[0016] 1) Preparation of refining agent: Mix hexachloroethane powder and alumina powder at a ratio of 1:1.75 and press it into a cake-shaped refining agent, then wrap the refining agent with aluminum foil for use, and wrap the aluminum foil to prevent the refining agent from deteriorating ;

[0017] 2) Refining: When the aluminum alloy melt reaches a refining temperature of 730°C to 760°C, add a refining agent to the aluminum alloy melt at a rate of 1.5 grams of refining agent per kilogram of Al. The steps for adding the refining agent are as follows:

[0018] a. Put the refining agent into the container with handle 1;

[0019] b. Extend the container from the fume removal hood of the furnace into the molten aluminum in the furnace;

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Abstract

The invention discloses an experimental aluminum alloy refining method. The experimental aluminum alloy refining method comprises the following steps: (1) a refining agent is prepared; and (2) refining: when aluminum alloy molten liquid reaches the refining temperature of 730-760 DEG C, the refining agent is added into the aluminum alloy molten liquid in a manner of adding 1.5 g of the refining agent per kilogram of Al. The refining agent can reach the optimal reaction speed with the aluminum alloy molten liquid, meanwhile, a large quantity of bubbles can be generated in the reaction process of hexachloroethane and the aluminum alloy molten liquid, so that gas in the aluminum alloy molten liquid is gathered and ascends to achieve excellent degassing effect; the bubbles generated by the reaction of the hexachloroethane and aluminum also can absorb and dissolve suspended maters in the aluminum alloy molten liquid, so that impurities in the molten liquid ascend to the liquid surface along with the bubbles to achieve excellent slag removing effect; and when a container slowly rotates, the container is always buried below the liquid surface, so that the gas is effectively prevented from being taken into the aluminum alloy molten liquid in the rotating process so as to eliminate such quality problems as air holes and slag inclusions in aluminum alloy cast bars.

Description

technical field [0001] The invention relates to a metallurgical process, in particular to a refining process of aluminum alloy. Background technique [0002] Gas and slag inclusions are important substances that affect the quality of aluminum alloy casting rods. In small-scale aluminum alloy casting experiments, especially in the process of melting and casting experiments using smaller crucible furnaces, online degassing of aluminum alloy castings cannot be achieved. In the past, the refining process often only wrapped the powdered refining agent with paper, clamped it into the aluminum alloy melt for stirring and refining, this refining method was not only uneven in refining, but also brought in a large amount of gas during the stirring process, As a result, there are more pores and slag inclusions in the cast rod, which seriously affects the quality of the experimental cast rod. Contents of the invention [0003] In view of this, the purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/00
Inventor 柳禹含刘兆伟李洪林杜西亚
Owner YINGKOU ZHONGWANG ALUMINUM CO LTD
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