Enhanced design method and selective laser melting forming method of porous metal plate

By designing a reinforced rib plate array structure on porous metal plates and combining laser selection melting forming method, the problem of insufficient mechanical properties and sweat cooling performance of porous metal plates is solved, and high mechanical properties and excellent sweat cooling performance are achieved, meeting the manufacturing needs of aerospace equipment.

CN119703087AActive Publication Date: 2025-03-28HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411969880.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-28
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

The existing porous metal plates have shortcomings in both high mechanical properties and excellent sweat cooling performance, which are difficult to meet the manufacturing needs of aerospace equipment.

Method used

The reinforced design method of porous metal plates is adopted to form a reinforced porous metal plate by constructing a reinforced rib plate array structure and combining with the laser selection melting forming method. The design method includes designing a cross-section plate unit in a porous metal plate model, and designing a hollow area on its plate body to form a reinforcement rib plate unit, and then copying the reinforcement rib plate array area along the Y-axis and Z-axis directions, and obtaining the porous metal area through Boolean subtraction operation.

Benefits of technology

The porous metal plate is achieved to take into account both mechanical properties and sweat cooling properties, improve its stability, load-bearing capacity and cooling working fluid through ability, and reduce manufacturing cost and printing difficulty.

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Abstract

The invention belongs to the technical field of advanced manufacturing, and discloses an enhanced design and selective laser melting forming method for a porous metal flat plate, which comprises the following steps: constructing a first enveloping cuboid of a porous metal flat plate model; constructing a second enveloping cuboid in the first enveloping cuboid; a cross plate unit is constructed in the second enveloping cuboid, the cross plate unit comprises at least four plate bodies parallel to the Z axis, and the plate bodies intersect at the center axis of the second enveloping cuboid and extend outwards in a radial mode to be connected with the inner wall of the second enveloping cuboid; designing a hollow area in the center of the plate body to obtain a reinforcing rib plate unit; in the first enveloping cuboid, the reinforcing rib plate units are copied in the Y-axis direction and the Z-axis direction to form reinforcing rib plate array areas; and performing Boolean subtraction on the reinforcing rib plate array area and the porous metal flat plate model to obtain a porous metal area so as to obtain a porous metal flat plate reinforcing model. The porous metal plate with high mechanical property and high sweating and cooling performance can be obtained through the method.
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