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Design method of built-in baffle for directional solidification vane gating system

A technology of directional solidification and pouring system, applied in the field of precision casting, can solve problems such as delaying the development of blades, and achieve the effect of shortening the trial production cycle, ensuring quality, and saving trial production costs.

Active Publication Date: 2017-07-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, in order to meet the requirements of acceptance standards, technicians need to adopt trial and error methods to explore the design of the gating system. Due to the influence of environmental and human factors, it is easy to misjudgment the law of change and delay the development progress of blades.

Method used

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  • Design method of built-in baffle for directional solidification vane gating system
  • Design method of built-in baffle for directional solidification vane gating system
  • Design method of built-in baffle for directional solidification vane gating system

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Embodiment Construction

[0031] The ProCAST software used in the embodiment of the present invention was purchased from USE Company of the United States.

[0032] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0033] The design method of the built-in baffle for the directional solidification blade gating system of this embodiment is carried out according to the following steps:

[0034] (1) Assemble the directional solidification vane pouring system without built-in baffles, assemble the sprue cup, upper disc, center column tube, chassis and ceramic vane shells together, the ceramic vane shells are arranged in a ring, and the adjacent vanes The minimum interval is 25mm, the thickness of the single shell is 6~10mm, the initial section is designed as a cuboid with a height of 15~25mm, the top riser is designed as a disc shape, and the thickness is 15~20mm. Blocking without feeding, placed on the water-cooled copper plate of t...

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Abstract

The invention belongs to the field of precision casting, and particularly relates to a design method of an internal baffle for a directional solidification blade casting system. The internal baffle is designed in the manner of combining a casting test and ProCAST software simulation analysis, the grow state of a grain structure is virtualized through a CAFE module, and the part subjected to distortion in the growth direction without a baffle blade structure is predicted. Then, a temperature field is analyzed, pre-judgment is carried out on the influence of the internal baffle on the shape of the front edge of solid liquid, the relation between the inclination angle and the diameter of the baffle is measured to determine the size of the baffle, and finally whether the blade grain growth orientation and grain size meet production standards or not is preliminarily evaluated. The casting system is designed, a large number of trial-manufacture expenses can be saved, test sequences are clearer, and the activity of technicians in design of the internal baffle of the directional solidification blade casting system is fully brought into play.

Description

technical field [0001] The invention belongs to the field of precision casting, and in particular relates to a design method of a built-in baffle for a directional solidification vane pouring system. Background technique [0002] Directional solidification technology is a process of establishing a temperature gradient in a specific direction in the mold, so that the liquid metal solidifies in the direction opposite to the direction of heat flow, or in the direction of crystallographic preference. The heat flow of the directional solidification blade flows in a single direction and is perpendicular to the growing solid-liquid interface. Therefore, the grain orientation detected by the directional blade after low-magnification corrosion is closely related to the shape of the front edge of the solid-liquid interface, that is, to ensure a horizontal The mushy region will be conducive to the straightness of the growth of columnar crystals along the main axis. However, due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/04
Inventor 尚伟孙长波李波周君华张松胜
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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