Net Shape Manufacturing of Aeroengine Components
Abstract
Direct laser fabrication (DLF) and Net shape HIPping are two net shape manufacturing technologies which are being studied in the IRC. The direct laser fabrication technique can produce 3-D components from their CAD files from metal powder and using a laser, the movement of which follows the paths defined by the CAD file whilst powder is being injected into its focal point. The correlation between the thermal history and microstructure will be illustrated. Some demonstration pieces will be shown. Net Shape HIPping (Hot Isostatic Pressing) is a technology to manufacture large components from powder to final shape component in one step. This technology uses cheap mild steel as tooling/mould material, which is filled with metal powder, followed by HIPping to consolidate the powder. A net shape component is subsequently obtained after removing of the tooling through machining/pickling. The geometry of the tooling/mould is designed through sophisticated computer modelling, taking into account the shrinkage during powder consolidation, mild steel deformation etc. so that the final geometry of the component is exactly that required after removing of the tooling. The mechanical properties obtained using this technique are similar to those in wrought components. Examples of the application of this net shape HIPping technology in manufacturing demonstrator components will be described.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2006
- Accession Number
- ADA521731
Entities
People
- Xinhua Wu
Organizations
- University of Birmingham