METHOD FOR REPAIRING DEFECTS ON HOT PARTS OF TURBOMACHINES THROUGH HYBRID HOT ISOSTATIC PRESSING (HIP) PROCESS

In a hot isostatic pressing (HIP) method, the component to be treated, affected by imperfections, like porosity, cracks and cavities in its structure, is placed into a container 11 together with non-metallic material 12 in form of powder or grains having size greater than the porosity and the cracks...

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Bibliographische Detailangaben
Hauptverfasser:	MOLA, Paolo, MASI, Gabriele, COSTANTINO, Stefano, BRANCHETTI, Vincenzo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CASTING CHEMISTRY COMBINED OPERATIONS DYES GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NATURAL RESINS OTHER WORKING OF METAL PAINTS PERFORMING OPERATIONS POLISHES POWDER METALLURGY TRANSPORTING UNIVERSAL MACHINE TOOLS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	In a hot isostatic pressing (HIP) method, the component to be treated, affected by imperfections, like porosity, cracks and cavities in its structure, is placed into a container 11 together with non-metallic material 12 in form of powder or grains having size greater than the porosity and the cracks and imperfections of the component. During the HIP process, the non-metallic material presses 12 on the whole surface of the embedded component in order to generate a combination of temperature and forces capable to reduce defects, embedded and not embedded, in the component itself. The component is not contaminated during the process thus allowing easily removal of the non-metallic material by a simple operation of mechanical cleaning or chemical washing.