Preparation method of fan-shaped sealing block of dot matrix cooling structure

A technology of cooling structure and lattice structure, which is applied in the field of fan-shaped sealing block preparation, can solve problems such as unmanufacturability, achieve high utilization rate, improve heat insulation and cooling performance, and excellent heat dissipation performance

Active Publication Date: 2017-09-08
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
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Problems solved by technology

[0005] Fan-shaped sealing blocks are mainly manufactured by stamping forming process, but fan-shaped sealing blocks with lattice structure cannot be

Method used

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  • Preparation method of fan-shaped sealing block of dot matrix cooling structure
  • Preparation method of fan-shaped sealing block of dot matrix cooling structure

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Embodiment Construction

[0033] The present invention is described further below in conjunction with example, but the present invention is not limited to specific embodiment.

[0034] The fan-shaped sealing block with a lattice structure is prepared by laser selective melting rapid prototyping technology. The lattice structure is composed of lattice units, and each lattice unit is in a tetrahedron, pyramid or kagome configuration, and the lattice structure completely covers the fan-shaped seal. A backplane, using laser selective melting to prepare a fan-shaped sealing block with a lattice structure on the backplane:

[0035] (1) Utilize three-dimensional drawing software (solidworks etc.) to set up the three-dimensional CAD model of the fan-shaped sealing block with lattice structure;

[0036] (2) According to the structural characteristics of the lattice in the fan-shaped sealing block with a new cooling structure, adjust the forming direction of the fan-shaped sealing block to ensure that all lattic...

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Abstract

The invention belongs to the technical field of fan-shaped sealing block preparation, and particularly relates to a preparation method of a fan-shaped sealing block of a dot matrix cooling structure. A laser selective melting quick molding technology is adopted for preparing the fan-shaped sealing block of the dot matrix structure, the dot matrix structure is composed of dot matrix units, each dot matrix unit is in a shape of a tetrahedron or pyramid or kagome construction, and a back plate of the fan-shaped sealing block is completely covered with the dot matrix structure. According to the preparation method, lasers serve as an energy source, powder bed selective quick molding equipment is used, appropriate fan-shaped sealing block molding direction and technological parameters are set, preparation of the fan-shaped sealing block of the dot matrix structure is further completed through a CAD model directly, a die is not needed, the alloy material using rate is high, the radiating performance of the obtained fan-shaped sealing block is excellent, the molding accuracy is good, and the heat insulation and cooling performance of the fan-shaped sealing block can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fan-shaped sealing block preparation, in particular to a method for preparing a fan-shaped sealing block with a lattice cooling structure. Background technique [0002] With the continuous development of aviation technology, the requirements for the thrust-to-weight ratio and low fuel consumption of the aero-engine are getting higher and higher, the pressure ratio and temperature of the engine are constantly increasing, and the leakage of the internal flow system is increasing, resulting in The loss of engine performance is also becoming more apparent. [0003] It is an important means to improve the efficiency of the engine to adopt the appropriate gas path sealing technology to reduce the gap between the compressor turbine blade tip and the casing. The fan-shaped sealing block is an important part of the low-pressure turbine part of the gas turbine engine. It has been scoured by high-temperature and hi...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/36B22F10/32B22F10/28B22F10/40Y02P10/25
Inventor 刘伟孙兵兵李能梁家誉李万青
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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