Method for smoothing a component surface region

US12005516B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Benjamin Graffel · Zwickau, DE
• Falk Winckler · Rippien, DE
• Sven Fritzche · Dresden, DE
• Bernd Kieback · Rabenau, DE
• Burghardt Klöden · Dresden, DE
• Thomas Weissgärber · Dresden, DE

Key dates

• Filing date: Sep 13, 2019
• Grant date: Jun 11, 2024
• Expiry date: Oct 21, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J37/304
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method is provided for smoothing a surface region of a component consisting of an electrically conductive material. The surface region of the component is coated inside a vacuum chamber, by focused electron beam(s) with a first surface energy, which brings about melting of the component material within the surface region. Before melting, the surface region is passed over at least twice by the electron beam, each time with a different focal length of the electron beam. A second surface energy is set for the electron beam, such that no melting of the component material is brought about in the surface region. Data is recorded by a number of sensors arranged inside the vacuum chamber. An actual value for the roughness is compared to a set point value. If the actual value has not reached the set point value, a value for the first surface energy is determined via comparison.