Method and device for the production of a three-dimensional...

Details Method and device for the production of a three-dimensional... Method and device for the production of a three-dimensional...

2003-08-08

2008-09-02

Tentoni, Leo B (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Using laser sintering of particulate material to build...

C264S040600, C264S113000, C264S408000, C264S410000

Reexamination Certificate

active

07419632

ABSTRACT:
A process and a device for producing a three-dimensional object is provided, with which process or device the object is produced by layer-wise solidification of a pulverulent material by sintering of the material at the points corresponding to the cross-section of the object by means of the action of radiation energy. The process comprises the application of a layer of the pulverulent material onto a substrate or a previously sintered layer, pre-heating of the pulverulent material to a working temperature below the temperature at which the powder is sintered and sintering of the material at the points corresponding to the cross-section of the object in the layer, wherein a step of controlled heating of an applied powder layer and of determining the quantity of heat taken up by the powder per (FIG.3) temperature interval for at least two temperature intervals is carried out.

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patent: 0 764 079 (1997-03-01), None
patent: WO 96/29192 (1996-09-01), None
patent: WO 96/35573 (1996-11-01), None

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