| 摘要 |
The invention relates to a method for producing three-dimensional work pieces in a laser material machining unit or a stereolithography unit. According to said method, either a layered sintered material or a pasty material is applied on a support from a supply device and heated by laser irradiation area by area, such that the constituents of said sintered material or pasty material join in layers to the work piece by at least partial melting, depending on the irradiated areas, whereby said laser irradiation is carried out with a first energy density and/or a first focus diameter. During or after the work piece production process, areas of said work piece are either melted by laser with an increase in energy density or removed.
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