APU compressor casing conical support welding repair method and repair device

Abstract

This invention relates to the field of aero-engine maintenance technology, and discloses a method and apparatus for welding repair of the conical support of an APU compressor casing. The method includes: detecting and locating cracks, cutting and separating the inner and outer shells of the casing, and cleaning the exposed cracks; placing the separated components on a fixture for vacuum electron beam welding, sequentially performing three stages: locating welding, penetration welding, and finishing welding, followed by slow cooling under vacuum; after passing inspection, re-welding and repeating the three-stage welding and slow cooling process; the apparatus includes a vacuum welding chamber, an electron beam emission system, a workpiece attitude adjustment platform, a weld seam visual tracking system, and specialized welding fixtures. This application can effectively reduce the heat-affected zone and casing deformation, ensure complete fusion at the crack root, and improve the mechanical properties and sealing reliability of the repair joint.

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