Equipment and method for casting plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC)

An aluminum alloy ingot, small-diameter technology, applied in the field of equipment and methods for casting aluminum alloy ingots, can solve the problems of poor liquid metal temperature consistency, poor water cooling uniformity, ingot suspension, etc., to improve the quality of ingots, Improve the casting yield and prevent the effect of cracking and running out

Active Publication Date: 2011-11-16
HARBIN ZHONGFEI NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention solves the problem of poor consistency of liquid metal temperature in each crystallizer, poor uniformity of water cooling, and easy occurrence of ingots in casting small-diameter aluminum alloy ingots (diameter less than 100mm) by adopting the existing vertical DC casting technology of multiple small-diameter ingots. Problems such as suspension or cracking and running, and then provide a vertical DC casting equipment and method for multiple small-diameter aluminum alloy ingots

Method used

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  • Equipment and method for casting plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC)
  • Equipment and method for casting plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC)
  • Equipment and method for casting plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC)

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specific Embodiment approach 1

[0022] Specific implementation mode one: as Figure 1-7 As shown, the equipment for vertical DC casting of multiple small-diameter aluminum alloy ingots described in this embodiment includes a casting system, a flow supply and distribution system, and a water supply system. The casting system includes a thermal insulation cover 2 and A plurality of hot top hats 3, a plurality of long graphite rings 4, a plurality of crystallizers 5 and a plurality of dummy ingot devices arranged in the same number; the flow distribution system includes a flow storage tank 15 and a flow channel 1; the flow flow channel 1 is a planar pipe network in which the branch flow channels at all levels are vertically and horizontally intersected and connected. The plurality of thermal top caps 3 are evenly distributed and vertically arranged in the insulation cover 2, and the branch flow channels 1 are horizontally placed in the insulation cover 2 and located in multiple The upper end of the heat top cap...

specific Embodiment approach 2

[0024] Specific implementation mode two: as Figure 1-7 As shown, the length of the long graphite ring 4 in this embodiment is 1.0-2.0 times the diameter of the ingot, which can further ensure uniform cooling, and ensure that all parts of the ingot are fully solidified to prevent runaway. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0025] Specific implementation mode three: as Figure 1-7 As shown, several water inlet holes 5-2 and water outlet holes 5-3 are evenly distributed on the crystallizer 5 in the present embodiment, and the total area of ​​the water inlet holes 5-2 is 1.1-1. 2.0 times. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention provides equipment and a method for casting a plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC) and relates to the equipment and the method for casting the aluminum alloy ingots, which aim to solve the problems of low consistency of metal temperatures, low water cooling uniformity and high possibility of ingot suspension or tension fracture and flow running in each crystallizer in the process of casting the aluminum alloy ingots with the small diameters by the conventional technology for casting the plurality of aluminum alloy ingots with the small diameters by using the vertical DC. The method comprises the following steps of: communicating all branch outlets on runners with a plurality of upper end inlets of hot top caps correspondingly one by one; communicating the lower end outlet of each hot top cap with a crystallizer inlet of the crystallizer, wherein the distances between a flow storage slot and the runners of all crystallizers are same; heating a heat preserving sleeve to the temperature of between 100 and 150 DEG C; opening the outlet of a smelting furnace, feeding molten aluminum alloy into all the crystallizers through the runners, and performing water cooling; stopping for 5 to 10 seconds after the liquid level of the molten aluminum alloy in the runners reaches a preset position; and moving an ingot guiding device downwards. The surface of each ingot is smooth, does not have cracks and has small segregation tumors, and each ingot does not have air pores, is not loose and has small grains.

Description

technical field [0001] The invention relates to equipment and a method for casting aluminum alloy ingots, and belongs to the technical field of direct water-cooled semi-continuous casting of aluminum alloys. Background technique [0002] The invention of DC (Direct Chilling Casting) casting has greatly promoted the development of aluminum alloy processing technology. Since then, in addition to the production of thin slabs by casting and rolling and belt continuous casting, almost all aluminum alloy ingots for pressure processing have been prepared by DC casting technology. [0003] Aluminum alloy ingots are usually cast by vertical DC casting, and in order to improve productivity, multiple continuous castings are used. However, the diameter of vertical continuous casting round ingots is usually above Ф100mm [Zhou Jiarong, Aluminum alloy melting and casting questions and answers [M], Beijing, Metallurgical Industry Press, 1987, 177]. Casting ingots smaller than this size is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/041
Inventor 李念奎
Owner HARBIN ZHONGFEI NEW TECH CO LTD
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