Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Olov Andersson

Jonas Eriksson

Andreas Graichen

A method of additive manufacturing a structure on a pre-existing includes disposing the pre-existing component in a bed of powdery base material and levelling the component, such that a manufacturing plane of the component can be recoated with the base material and alternatingly recoating and irradiating the manufacturing plane with an energy beam in order to additively build up the structure, wherein the irradiation is carried out in that the manufacturing plane is scanned by the beam in a non-continuous way, wherein, for the irradiation according to a second vector for the structure, the beam is either only guided parallel with respect to a previous first vector, or the irradiation process is paused after the irradiation of the first vector for a time span between 1/10 second to 2 seconds until the irradiation is continued with the second vector.

Method of additively manufacturing a structure on a pre-existing component out of the powder bed

A part (P) includes a first (FP), and a second portion (SP), which meet at an interface (IF). A channel (CH) extends from the first portion (FP) through the interface (IF) into the second portion (SP). Further there is a method to generate the part (P). To refurbish a part with tiny geometry channels, the second portion (SP) is produced by additive manufacturing technology on the interface (IF) with the first portion (FP), the channel (CH) has a first average diameter (DI) in the first portion (FP) and the interface (IF), and the channel (CH) has a second average diameter (D) in the second portion (SP) at said interface (IF). The second diameter (D) is larger than the first diameter (DI). The channel (CH) has a first tapered portion (TP) which narrows in the second portion (SP) at increasing distance from the interface (IF).

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Norrkoping, Sweden

Olov Andersson