A method for cooling a group of holes of a thin plate type heat shield by laser electrolysis composite machining

By using a laser-electrolytic composite processing method, the problems of deformation and surface quality in the processing of cooling holes in thin-plate heat insulation screens have been solved, achieving efficient and precise hole processing and improving processing quality and efficiency.

CN121373611BActive Publication Date: 2026-06-16SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
Filing Date
2025-10-21
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing technologies for processing cooling holes in thin-plate heat insulation screens suffer from problems such as deformation, poor surface quality, sharp edges and burrs at the hole openings, making it difficult to balance processing efficiency and quality.

Method used

A laser-electrolysis hybrid processing method is adopted, which combines laser and electrolysis technologies to achieve efficient processing of cooling holes through parameter programming, strategy customization, clamping and positioning, and online detection.

Benefits of technology

It improves processing quality and efficiency, reduces deformation, ensures the geometric accuracy and surface quality of holes, and solves the bottleneck problem in traditional processing methods.

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Abstract

The application provides a thin-plate heat shield cooling group-hole laser-electrolysis composite machining method, which comprises the following steps: parameter preparation: determining the recasting layer thickness and surface roughness as target variables of laser-electrolysis composite machining of cooling group-holes; strategy customization: determining the part deformation as a target variable of laser-electrolysis composite machining of cooling group-holes; clamping and positioning: establishing the relationship between the heat shield hole position coordinates and the machine tool machining coordinates; composite punching: using the process parameters formed by S1 and the interval punching strategy formed by S2, the machining of all cooling group-holes of the heat shield is completed at one time, and online detection is performed. The application has the following advantages: the position degree of the cooling group-hole machining is ensured, the machining efficiency and machining quality are improved, the unit area hole machining time is effectively controlled, the heat input and electrolyte impact of the laser-electrolysis composite machining on the heat shield cooling group-hole machining are reduced, and the deformation is reduced.
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Citation Information

Patent Citations

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