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Formwork production process for precision castings with complex deep-groove structures

A precision casting and deep groove technology, which is applied in the field of shell-making technology of precision castings with complex deep groove structures, and can solve problems such as running out of fire and iron inclusion in castings

Inactive Publication Date: 2018-06-12
安徽应流航源动力科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a shell-making process for precision castings with a complex deep groove structure, which solves the defect problems of "iron clamping" and "running out of fire" of castings

Method used

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  • Formwork production process for precision castings with complex deep-groove structures

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] see figure 1 , the present invention provides a technical solution: a shell-making process for precision castings with complex deep groove structures, comprising the following steps:

[0028] Step 1, pressing the wax model (1) and cleaning the obtained wax model (1);

[0029] Step 2, prepare corundum powder slurry and maleic powder slurry respectively, take the cleaned wax model (1) and carry out multiple initial coats in sequence, sprinkle sand and fu...

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Abstract

The invention discloses a formwork production process for precision castings with complex deep-groove structures, and relates to the technical field of precision casting. According to the process, through reasonably selecting the refractory silt sand of the two front layers of formworks, the heat-conducting capacity of the formworks is improved, and the risk of loosening and hot-cracking of the castings at deep-groove parts is lowered; and through injecting dry sand into the deep-groove parts and sealing groove openings with a slurry, the problem of 'iron inclusion' brought by difficult thorough drying and insufficient strength of the formworks at the deep-groove parts is solved, and the heat storage capacity of the formworks at the deep-groove parts is weakened.

Description

technical field [0001] The invention relates to the technical field of precision casting, in particular to a shell-making process of precision castings with complex deep groove structures. Background technique [0002] With the rapid development of my country's aero-engine and gas turbine business, the high-temperature mechanical properties of its key components are increasingly demanding, and the precision casting process of high-temperature alloy hot-end components and complex structural parts has become one of the technical bottlenecks that urgently need to be broken through . As a key part of the precision casting process, the shell-making process has a vital impact on the dimensional accuracy, metallurgical quality and pass rate of the product. [0003] For precision castings with complex deep groove structures, it is difficult to ensure the dryness and strength of the mold shells at the deep grooves according to the traditional shell making process, and it is easy to p...

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Application Information

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IPC IPC(8): B22C9/22B22C9/04B22C1/00
CPCB22C9/22B22C1/00B22C9/04
Inventor 杜应流刘张涛施长坤冯文刚叶宗林
Owner 安徽应流航源动力科技有限公司
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