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Casting method for semi-solid aluminum alloy cast rods formed by extrusion

A semi-solid, aluminum alloy technology, applied in the field of casting, can solve the problems of uneven density of semi-solid aluminum alloy castings, limited application range, easy cracks, etc., and achieves short solidification time, low temperature, and low crystallization latent heat. Effect

Inactive Publication Date: 2015-07-01
QINGDAO YUGUANG PRECISION CASTING FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Semi-solid aluminum alloy casting rod casting In terms of technical support for the production and R&D of semi-solid aluminum alloy casting rods, domestic semi-solid aluminum alloy casting rods are relatively backward compared with foreign countries, and many products are very inconvenient to use.
In the current casting process of semi-solid aluminum alloy rod castings, the finished semi-solid aluminum alloy rod castings have uneven density, are prone to cracks, and have limited application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] (1) Melt aluminum and its added alloy materials, control the temperature of molten aluminum to start casting at 770°C, and turn on the cooling water;

[0019] (2) During the casting process, the casting temperature is controlled by controlling the height of the molten aluminum on the mold plate, the casting temperature is 680°C, and the temperature difference between the head and the tail of the mold plate is controlled to be 14°C;

[0020] (3) When the molten aluminum is full of the mold plate, turn on the electromagnetic stirring device, the current at the initial stage of casting is 15A, the casting speed is 55mm / min, and the cooling water flow rate is 3000L / min;

[0021] (4) When the casting length reaches 590mm, increase the electromagnetic stirring current and increase the casting speed. At this time, the current is 69A, the casting speed reaches 140mm / min, and the cooling water flow rate is 3200L / min;

[0022] (5) When the casting length reaches 700...

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PUM

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Abstract

The invention discloses a casting method for semi-solid aluminum alloy cast rods formed by extrusion. According to the casting method, during a metal solidification process, an alternating current is applied to a metal solid-liquid coexistence zone, and electromagnetic stirring is performed, so that dendritic crystals are effectively smashed and a spherical particle structure is formed in a matrix; meanwhile, a liquid cave becomes shallow through violent stirring, temperature distribution is more uniform, and quality and the mechanical property of the cast rods are effectively improved. The method has the advantages as follows: mold filling is stable, turbulence and spattering are prevented, the temperature is low, latent heat of crystallization is less, the solidification time is short, the production efficiency is high, and the casting method is suitable for being used widely in the industry.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a casting method for extruded semi-solid aluminum alloy cast rods. [0003] Background technique [0004] Semi-solid aluminum alloy casting rod castings In terms of technical support for the production and R&D of semi-solid aluminum alloy casting rods, domestic semi-solid aluminum alloy casting rods are relatively backward compared with foreign countries, and many products are very inconvenient to use. In the current casting process of semi-solid aluminum alloy rod castings, the finished semi-solid aluminum alloy rod castings have uneven density, are prone to cracks, and have limited application range. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a casting method for extruded semi-solid aluminum alloy cast rods,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/00
CPCB22D17/007
Inventor 陈玉光
Owner QINGDAO YUGUANG PRECISION CASTING FACTORY