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Precision casting method for refining aluminum alloy by using adjustable traveling wave magnetic field

A traveling wave magnetic field and precision casting technology, applied in the field of casting, can solve the problems of high cost and difficult control of aluminum alloys, and achieve the effects of increasing nucleation rate, reducing temperature gradient and increasing feeding capacity.

Inactive Publication Date: 2011-05-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the existing technical problems of high cost and difficulty in controlling the properties of aluminum alloys through fine-grain and densification; and provides a precision casting method for fine-grained aluminum alloys with an adjustable traveling wave magnetic field

Method used

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  • Precision casting method for refining aluminum alloy by using adjustable traveling wave magnetic field
  • Precision casting method for refining aluminum alloy by using adjustable traveling wave magnetic field
  • Precision casting method for refining aluminum alloy by using adjustable traveling wave magnetic field

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specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, an adjustable traveling wave magnetic field refinement aluminum alloy precision casting method is realized through the following steps: 1. Heat and melt the aluminum alloy and keep it warm to obtain an aluminum alloy melt; 2. Put the casting mold into the traveling wave magnetic field sensor, the material of the casting mold is a non-magnetic material, turn on the traveling wave magnetic field sensor to adjust the magnetic induction intensity B of the traveling wave magnetic field sensor, and then put the aluminum alloy melt obtained in step 1 Inject into the casting mold, apply a traveling wave magnetic field with the magnetic field direction vertically downward (gravity direction) to the aluminum alloy melt, the magnetic induction intensity is 32-500mT, and the aluminum alloy solidifies under the action of the traveling wave magnetic field; that is, the precision casting of aluminum alloy is completed.

[0009] The method of t...

specific Embodiment approach 2

[0010] Embodiment 2: This embodiment differs from Embodiment 1 in that the non-magnetic material in step 2 is stainless steel, quartz or alumina. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is that step one is to keep warm for 20 minutes. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a precision casting method for refining aluminum alloy by using an adjustable traveling wave magnetic field, belonging to the technical field of casting. The invention aims to solve the technical problems of high cost and difficulty in control in the process of grain refining and compacting for changing the properties of aluminum alloy in the prior art. The method provided by the invention comprises the following steps: 1. heating to melt aluminum alloy, and carrying out heat preservation,, thus obtaining an aluminum alloy molten mass; and 2. putting a casting mold, which is made of a non-magnetic material, in a traveling wave magnetic field inductor, turning on the traveling wave magnetic field inductor, adjusting the magnetic field intensity of the traveling wave magnetic field inductor, injecting the aluminum alloy molten mass obtained in the step 1 into the casting mold, and applying a traveling wave magnetic field, of which the magnetic field direction is vertically downward and the magnetic induction intensity is 32-500mT, onto the aluminum alloy molten mass to solidify the aluminum alloy under the traveling wave magnetic field, thereby completing the precision casting of the aluminum alloy. The method provided by the invention is easy to control and low in cost; and by utilizing the method provided by the invention, the obtained alloy crystal grains are fine, bubbles and voids can be effectively reduced, and the metal feeding capacity in the solidification process can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of casting, and relates to a precision casting method for refining an aluminum alloy with an adjustable traveling wave magnetic field. Background technique [0002] With the rapid development of modern science and technology, cast aluminum alloy, as a traditional metal material, still occupies an important position in aviation, aerospace, automobile, machinery manufacturing and other industries due to its low density and high specific strength. Modern material preparation technology pursues low cost and high performance. As an important link in the material preparation process, grain refinement and densification have become an important direction to improve the performance of aluminum alloy materials. The overall performance of the material to achieve fine grain and densification has been effectively improved. Therefore, grain refinement and densification are a basic method to improve the performance of al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F3/02B22D27/02
Inventor 苏彦庆徐严谨骆良顺刘江平郭景杰
Owner HARBIN INST OF TECH
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