Method

In a first method of stress relieving a component 4, a pulsed electrical current is applied via electrodes 2 to a first side of the component 4, where the electrodes 2 are movable relative to each other so that the current density is adjustable. A pulsed magnetic flux can be applied in combination w...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Zixuan Ling, Chern How Nicholas Chia, Wei Zhou, Martyn Jones, Rejeki Simanjorang, Paul Williams
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	In a first method of stress relieving a component 4, a pulsed electrical current is applied via electrodes 2 to a first side of the component 4, where the electrodes 2 are movable relative to each other so that the current density is adjustable. A pulsed magnetic flux can be applied in combination with the pulsed current. In a second method, a pulsed square wave electrical current with a pulse width in the range 1-50 ms and a current density in the material in the range 10-10000 A/mm2 is applied via electrodes 2 either on a first side or on opposing sides of the component 4. The methods can be used after forming the component by forging or drawing or during or after forming the component by welding or additive manufacture. The method can be used when repairing or modifying a gas turbine engine rotary blade.