Patent application number | Description | Published |
20100007062 | METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS - A method for producing three-dimensional objects from a powder material which is capable of solidification by irradiation with a high-energy beam is disclosed. The method comprises homogeneously pre-heating the powder material by scanning with the high-energy beam along predetermined paths over a pre-heating area so that consecutive paths are separated by a minimum security distance which is adapted to prevent undesirable summation effects in the pre-heating area, and then solidifying the powder material by fusing together the powder material. Apparatus for producing such three-dimensional objects is also disclosed. | 01-14-2010 |
20100270708 | METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS - The invention concerns a method for producing three-dimensional objects ( | 10-28-2010 |
20120211926 | METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS - A method for producing three-dimensional objects from a powder material which is capable of solidification by irradiation with a high-energy beam is disclosed. The method comprises homogeneously pre-heating the powder material by scanning with the high-energy beam along predetermined paths over a pre-heating area so that consecutive paths are separated by a minimum security distance which is adapted to prevent undesirable summation effects in the pre-heating area, and then solidifying the powder material by fusing together the powder material. Apparatus for producing such three-dimensional objects is also disclosed. | 08-23-2012 |
20130300035 | METHOD FOR PRODUCTION OF A THREE-DIMENSIONAL BODY - The invention concerns a method for production of a three-dimensional body by successively providing powder layers and fusing together of selected areas of said layers, which areas correspond to successive cross sections of the three-dimensional body, wherein the method comprises the following steps for at least one of said layers: applying the at least one powder layer onto a working area, and fusing together a selected area of the at least one powder layer by supplying energy from a radiation gun to the selected area. The invention is characterized in that it comprises the steps of: establishing an intended beam path that is to be used when fusing together the selected area of the at least one powder layer, calculating a temperature in the at least one powder layer along the intended beam path as a function of a specific energy deposition of an imaginary beam that is assumed to move along the intended beam path, adjusting the specific energy deposition of the imaginary beam along the intended beam path depending on the calculated temperature and on conditions set for the step of fusing together the selected area, and providing, based on the calculations and the adjustments, an operating scheme for the specific energy deposition of the real beam to be used for the intended beam path when fusing together the selected area of the at least one layer. | 11-14-2013 |
20140348691 | METHOD AND APPARATUS FOR ADDITIVE MANUFACTURING - A method for forming a three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, said method comprising the steps of: providing a model of said three dimensional article, providing a first powder layer on a work table, directing a first energy beam from a first energy beam source over said work table causing said first powder layer to fuse in first selected locations according to said model to form a first cross section of said three-dimensional article, directing a second energy beam from a second energy beam source over said work table causing said first powder layer to fuse in second selected locations according to said model to form the first cross section of said three-dimensional article, wherein said first and second locations of said first powder layer are at least partially overlapping each other. | 11-27-2014 |
20150071809 | POWDER DISTRIBUTION IN ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES - The present invention relates to a method for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table. Said method comprising the steps of: providing at least a first and second powder tank, providing a first type of powder in said first powder tank having a first particle size distribution, providing a second type of powder in said second powder tank having a second particle size distribution, providing a first sub-layer of said first type of powder on said work table, providing a second sub-layer of said second type of powder on top of said first layer of said first type of powder, fusing said first and second sub-layers simultaneously with a high energy beam from a high energy beam source for forming a first cross section of said three-dimensional article. | 03-12-2015 |
20150151490 | METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS - The invention concerns an apparatus ( | 06-04-2015 |