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A rapid composite casting method of aerospace high-strength aluminum alloy

A composite casting, high-strength technology, applied in the field of aluminum alloy casting, can solve the problems of high-strength aluminum alloy castings prone to body cracks, and achieve the effect of meeting the requirements of rapid production, reducing the tendency of cracking, and shortening the casting cycle.

Active Publication Date: 2022-07-19
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a rapid composite casting method for aerospace high-strength aluminum alloys, which can solve the problem that high-strength aluminum alloy castings are prone to body cracks

Method used

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  • A rapid composite casting method of aerospace high-strength aluminum alloy
  • A rapid composite casting method of aerospace high-strength aluminum alloy
  • A rapid composite casting method of aerospace high-strength aluminum alloy

Examples

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Embodiment 1

[0058] The present embodiment provides a rapid composite casting method for aerospace high-strength aluminum alloy, the steps comprising:

[0059]Step 1: Use 3D printing technology to quickly prepare two sets of sand molds inside and outside according to the shape of the workpiece and the casting process design plan; Step 2: Select appropriate materials to prepare the transition layer; Step 3: Use automatic coating equipment to coat the 3D printed sand mold Step 4: Assemble the sand mold and perform high-strength aluminum alloy casting to complete the casting of the high-strength aluminum alloy casting.

[0060] For the preparation of the transition layer in step 2, the transition layer includes refractory A component, adhesive B component and defoamer component C, the refractory is quartz sand, the adhesive is silica sol, and the defoamer is n-Octanol. Among them, the mass ratio of A component, B component and defoamer is 2:1:0.1.

[0061] The preparation method of the tran...

Embodiment 2

[0068] This embodiment provides another method for rapid composite casting of aerospace high-strength aluminum alloys. The other steps are the same as those in Embodiment 1, and will not be repeated here. , the transition layer includes refractory A component, adhesive B component and defoamer component C, the refractory is quartz sand, the adhesive is silica sol, and the defoaming agent is n-octanol. Among them, the mass ratio of A component, B component and defoamer is 2:5:0.1.

[0069] In step 3, use automatic coating equipment to coat the surface of the test piece with the coating material for many times to obtain the desired transition layer.

[0070] Step 301 : using an automatic coating process to coat the surface of the test piece with a transition layer coating material to obtain a first coating; the ambient temperature during coating is 10° C. and the relative humidity is 20%.

[0071] In this embodiment, the strength of the transition layer obtained by the above co...

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Abstract

The invention discloses a rapid composite casting method for aerospace high-strength aluminum alloy, belongs to the technical field of aluminum alloy casting, and solves the problem that high-strength aluminum alloy castings are prone to body cracks in the existing casting molding technology. The steps of the present invention include: step 1: using 3D printing technology to prepare two sets of sand molds inside and outside; step 2: preparing a transition layer; step 3: coating the transition layer on the sand mold; step 4: assembling the sand mold and applying high-strength aluminum Alloy casting to complete the casting of high-strength aluminum alloy castings. By adding a transition layer on the sand mold, the invention reduces the cracking tendency of the high-strength aluminum alloy during casting, and the surface cracks of the test piece are reduced by 50%-90%. At the same time, the 3D printing technology is used to prepare the sand mold, and the automatic coating equipment is used to coat the transition layer. layer, which can shorten the casting cycle by 10-15 days.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting, and in particular relates to a rapid composite casting method of aerospace high-strength aluminum alloy. Background technique [0002] Traditional aluminum alloy castings are generally produced by sand casting, especially resin sand casting, which can obtain products with better overall quality and performance, and has been widely used. [0003] As a new material, high-strength aluminum alloys have higher copper content than ordinary 1-series and 2-series aluminum alloys in order to achieve the goal of improving alloy strength, resulting in more severe alloy cracks than ordinary 1-series and 2-series cast aluminum alloys. If the traditional resin sand casting method is used for production, the sand mold is prone to cracking during the solidification process of the alloy liquid due to the high cooling rate of the sand mold, resulting in unqualified internal quality of the casting. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/02B22C23/02B33Y10/00
Inventor 柳森
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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