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Precision casting process of thin-wall aluminum alloy aviation pump body

A technology of precision casting and aluminum alloy, applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve problems such as unusability, and achieve the effect of ensuring casting molding

Inactive Publication Date: 2019-08-30
鹰普航空科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a precision casting process for a thin-walled aluminum alloy aviation pump body to solve the defect that this structure cannot be obtained by using normal wax pressing and shell making processes

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  • Precision casting process of thin-wall aluminum alloy aviation pump body

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiment;

[0025] A precision casting process for a thin-walled aluminum alloy aviation pump body, characterized in that it comprises the following steps:

[0026] 1. Making the water-soluble ceramic core: press the water-soluble ceramic material into the water-soluble ceramic core mold to obtain the ceramic core blank, and obtain the water-soluble ceramic core after roasting;

[0027] 2. Making water-soluble wax: inject water-soluble wax material into the water-soluble wax mold to obtain water-soluble wax;

[0028] 3. Press the wax mold: put the obtained water-soluble ceramic core and water-soluble wax into the main mold and fix it through the mold, inject the wax-based material according to the shape and size of the mold and keep the pressure;

[0029] 4. Dissolving water-soluble wax: the obtained wax mold with water-soluble ceramic core and water-soluble wax, brush the positioning ...

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Abstract

The invention provides a precision casting process of a thin-wall aluminum alloy aviation pump body. The process comprises the following steps of 1, manufacturing a water-soluble ceramic core, specifically, a water-soluble ceramic material is pressed into a water-soluble ceramic core mold to obtain a ceramic core rough blank and after the ceramic core rough blank is roasted, the water-soluble ceramic core is obtained; 2, preparing water-soluble wax, specifically, a water-soluble wax material is injected into a water-soluble wax mold to obtain the water-soluble wax; 3, pressing a wax mold; 4, dissolving the water-soluble wax; 5, assembling; 6, shell making; 7, dewaxing, specifically, a prepared shell is subjected to the dewaxing by adopting a steam dewaxing kettle; 8, casting; and 9, cleaning, specifically, the sandblasting, cutting and polishing are carried out on the cast pump body mold shell to obtain a near-net formed blank. With the process, the reasonable water-soluble ceramic core and the water-soluble wax are selected, so that the composition of an inner cavity structure is ensured, and the requirements of high grade of fluorescence and X-ray quality and surface roughness can be met.

Description

technical field [0001] The invention relates to the technical field of aviation investment precision casting, in particular to a precision casting process for a thin-walled aluminum alloy aviation pump body; Background technique [0002] At present, our factory produces a variety of thin-walled aluminum alloy aviation pump body castings, the material is A356.0, the height is about 230mm, the diameter is about 110mm, and the overall wall thickness is 2.5mm; the quality requirements of fluorescence and xray are AMS 2175Class3GradeB, and the surface roughness is Ra3.2; There are two runners interspersed in the inner cavity, and the thinnest part of one inner cavity is only 7mm, which cannot be obtained by normal wax pressing and shell making processes; water-soluble ceramic core + investment precision casting process must be used to clean forming. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a precision casting ...

Claims

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Application Information

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IPC IPC(8): B22C7/02B22D18/04B22C1/00C22C21/02
CPCB22C1/00B22C7/02B22D18/04C22C21/02
Inventor 于洋安庆贺史兴利
Owner 鹰普航空科技有限公司
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