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Five process methods for reducing precipitation type pores of aluminum alloy die casting parts

A die-casting process and aluminum alloy technology, which is applied in the field of reducing precipitated pores in aluminum alloy die-castings, to achieve the effect of reducing precipitated pores

Inactive Publication Date: 2010-06-30
WUJIANG TIANLONG MACHINERY
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Problems solved by technology

[0003] In order to solve the problem of a large number of precipitated pores in aluminum alloy die castings, our company has undergone a large number of trial productions in the process of die casting process design, combined with the experience and existing problems of the current degassing process methods, respectively adopting raw and auxiliary materials processing and smelting equipment Treatment, refining degassing process, argon degassing process and melt treatment, so as to effectively reduce the generation of precipitated pores in aluminum alloy die castings

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  • Five process methods for reducing precipitation type pores of aluminum alloy die casting parts
  • Five process methods for reducing precipitation type pores of aluminum alloy die casting parts

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Embodiment Construction

[0007] 1. Process treatment of raw and auxiliary materials: Before using the furnace charge, carry out sand blowing treatment to remove rust, sediment and other dirt on the surface of the furnace charge, and then preheat the furnace charge. Bring in moisture and oil, etc.

[0008] 2. Treatment of smelting equipment: Before using a new crucible or an old crucible with rust and dirt, perform sand blasting to remove the crucible, ingot mold, and smelting tools, and preheat to 220-350°C for 2 hours, and the crucible continues Heat to 680°C-750°C and keep it warm for 1 hour; the newly built furnace must be dried in the oven for more than 3 days before use; the tools used for melting, such as ladles and bell jars for degassing, must be dried before use. Clean the residual metal, scale and other dirt on the surface.

[0009] 3. Refining and degassing treatment: the refining degassing agent 3 is made of chlorine salt, the refining equipment is designed with a quarter spherical bell j...

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Abstract

The invention relates to an aluminum alloy die casting process method, in particular to the process method which is applicable to reducing the involvement type pores of aluminum alloy die casting parts. The process method can effectively reduce the production of the involvement type pores in the aluminum alloy die casting parts by combining with the experiences and problems of the existing degassing process method and respectively adopting the five process methods of process treatment of raw and auxiliary materials, treatment by a smelting device, refining and degassing process treatment, argon degassing process treatment and molten solution treatment.

Description

Technical field [0001] The invention relates to an aluminum alloy die-casting process method, in particular to a process method suitable for reducing the precipitated pores of aluminum alloy die-casting parts. Background technique [0002] During the die-casting production process, when the aluminum alloy solidifies from a liquid to a solid, the hydrogen dissolved in the aluminum alloy will precipitate to form hydrogen gas, and the hydrogen gas will remain inside the casting to form holes. Cut open detection, the inner wall is smooth and has metallic luster, which will exist anywhere in the casting. The existence of precipitated pores in aluminum alloy die castings affects the properties of castings mainly in that it can reduce the density of the casting structure and reduce the mechanical properties. Contents of the invention [0003] In order to solve the problem of a large number of precipitated pores in aluminum alloy die castings, our company has undergone a large nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06B22D17/00
Inventor 施国春施小弟王泽民刘洪军周兴宝蒲朝辉
Owner WUJIANG TIANLONG MACHINERY
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