Additive manufacturing of three-dimensional articles
US9802253B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jan 23, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for heating and/or fusing said powder material. Controlling the electron beam source in a first mode when said formation of said three dimensional article is in a first process step. Controlling said electron beam in a second mode when said formation of said three dimensional article is in a second process step, wherein in said first mode an electron beam current from said electron beam source is controlled in a feed-forward mode and in said second mode said electron beam current is controlled in a feed-back mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.