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Equipment and method for simultaneously preparing multiple round aluminum alloy ingots

A technology of aluminum alloy and round ingot, applied in the field of aluminum alloy casting, can solve the problems such as the quality of aluminum processing products affecting the product yield, uneven structure, surface scratches, etc., to improve the internal metallurgical quality, fine and uniform grains, The effect of improving the surface quality

Inactive Publication Date: 2013-05-01
沈阳东铝特材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, hot-top casting is restricted by alloy types and productivity requirements, so it can only play a limited role in improvement.
In addition, in continuous casting, the solidification and molding of liquid metal is mostly carried out in the crystallizer (mould shell). Due to the friction and wear between the two, there are many defects on the surface of the solidified ingot, such as scars, surface Wrinkles, etc., so that in the subsequent processing, the defective surface of the ingot has to be milled off, resulting in a great waste of resources
[0003] To sum up, semi-continuous casting is currently the most important production method of aluminum alloy ingots, but due to its own process characteristics, it is easy to have uneven structure, segregation of alloy elements, casting stress and cracks, surface pull marks, etc. defect
The above-mentioned defects will directly affect the yield of the product and the quality of the final aluminum processed product. Therefore, it is necessary to further improve and perfect the process

Method used

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  • Equipment and method for simultaneously preparing multiple round aluminum alloy ingots
  • Equipment and method for simultaneously preparing multiple round aluminum alloy ingots
  • Equipment and method for simultaneously preparing multiple round aluminum alloy ingots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037](1) The dummy head is lifted into the crystallizer under the lifting of the casting machine. The upper edge of the dummy head is 1mm away from the lower edge of the graphite ring. After the dummy head is in place, turn on the cooling water switch, and the cooling water enters the crystallizer through the water tank. And it is sprayed out from the water hole in the lower part of the crystallizer, and acts on the surface of the ingot;

[0038] (2) Open the oil valve, and after lubricating oil appears on the surface of the graphite ring, introduce the aluminum liquid into the cavity formed by the dummy head, the graphite ring and the heat preservation cap;

[0039] (3) The molten aluminum is solidified in the cavity for 5 seconds. After forming the slab shell, it moves down under the traction of its own weight and the dummy head, and starts the casting machine to start casting an ingot with a diameter of 380mm. The initial starting speed is 10mm / min, and then The casting sp...

Embodiment 2

[0048] (1) The dummy head is lifted into the crystallizer under the lifting of the casting machine. The upper edge of the dummy head is 1mm away from the lower edge of the graphite ring. After the dummy head is in place, turn on the cooling water switch, and the cooling water enters the crystallizer through the water tank. And it is sprayed out from the water hole in the lower part of the crystallizer, and acts on the surface of the ingot;

[0049] (2) Open the oil valve, and after lubricating oil appears on the surface of the graphite ring, introduce the aluminum liquid into the cavity formed by the dummy head, the graphite ring and the heat preservation cap;

[0050] (3) The molten aluminum is solidified in the cavity for 5 seconds. After forming the billet shell, it moves down under the traction of its own weight and the dummy head, and starts the casting machine to start casting an ingot with a diameter of 300mm. The initial starting speed is 15mm / min, and then The casting...

Embodiment 3

[0054] (1) The dummy head is lifted into the crystallizer under the lifting of the casting machine. The upper edge of the dummy head is 1mm away from the lower edge of the graphite ring. After the dummy head is in place, turn on the cooling water switch, and the cooling water enters the crystallizer through the water tank. And it is sprayed out from the water hole in the lower part of the crystallizer, and acts on the surface of the ingot;

[0055] (2) Open the oil valve, and after lubricating oil appears on the surface of the graphite ring, introduce the aluminum liquid into the cavity formed by the dummy head, the graphite ring and the heat preservation cap;

[0056] (3) The molten aluminum is solidified in the cavity for 5 seconds. After forming the billet shell, it moves down under the traction of its own weight and the dummy head. Start the casting machine to start casting an ingot with a diameter of 200mm. The initial starting speed is 50mm / min, and then The casting spee...

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Abstract

The invention belongs to the field of aluminum alloy casting, and in particular relates to equipment and a method for simultaneously preparing multiple round aluminum alloy ingots. The equipment mainly comprises a crystallizer, a water tank, a magnet exciting coil, a magnet exciting power supply, a porous graphite ring, a lubricating oil supply system and a casting machine. The method comprises the following steps of: starting the lubricating oil supply system, introducing molten aluminum into a cavity which is formed by ingot butts, the porous graphite ring and a heat preservation cap, starting the casing machine for casting, starting the magnet exciting power supply, dynamically crystallizing aluminum melt under the stirring action of an induced magnetic field, and thus obtaining a fineand uniform metallurgical structure and the good surface quality of the ingots. By the equipment and the method, the semi-continuous casting of round aluminum alloy cast rods under the combined action of electromagnetic stirring and oil lubrication is realized, and the internal metallurgical quality and the surface quality of the ingots can be improved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy casting, and in particular relates to a device and a method for simultaneously preparing a plurality of aluminum alloy round ingots. Background technique [0002] There are many ways to prepare aluminum alloy ingots, such as block iron mold casting, semi-continuous casting, casting and rolling, etc. Among them, semi-continuous casting, also known as DC casting, is the most widely used. Semi-continuous casting can be broadly defined as follows: a liquid metal is continuously introduced into a crystallizer of a specific shape, solidifies into an ingot under the cooling of the mold, and is continuously pulled out of the mold at a certain speed, and finally forms a cast of a certain length. Ingot casting method. The semi-continuous casting technology was first successfully developed in 1953 by the American Alcoa Aluminum Company. Due to the characteristics of aluminum's good thermal conductivity, easy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/14B22D11/16
Inventor 赵志浩崔建忠柴建勋崔兴华王高松
Owner 沈阳东铝特材科技有限公司
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