公开(公告)号：US20170136542A1

公开(公告)日：2017-05-18

申请号：US15344732

申请日：2016-11-07

Applicant: Arcam AB

Inventor： Johan Nordkvist ,  Ulf Ackelid

IPC: B22F3/105 ,  B33Y10/00 ,  B23K15/02 ,  B22F3/10 ,  B23K15/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F3/1055 ,  B22F3/1017 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2998/10 ,  B22F2999/00 ,  B23K15/0086 ,  B23K15/02 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295 ,  B22F2203/11

Abstract: The present invention relates to a methods, computer program products, program elements, and apparatuses for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article. The method comprising the steps of providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode and an anode, and varying an accelerator voltage between the cathode and the anode between at least a first and second predetermined value during the forming of the three-dimensional article.

公开(公告)号：US20170066051A1

公开(公告)日：2017-03-09

申请号：US15232123

申请日：2016-08-09

Applicant: Arcam AB

Inventor： Ulf Ackelid ,  Calle Hellestam

IPC: B22F3/10 ,  B33Y50/00 ,  B33Y30/00 ,  B33Y70/00 ,  G01N23/20 ,  B22F3/105 ,  B23K15/00 ,  B23K15/02 ,  G01N23/225 ,  B33Y10/00 ,  B33Y50/02

CPC classification number: B22F3/1017 ,  B22F3/105 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2203/03 ,  B22F2998/10 ,  B23K15/0086 ,  B23K15/02 ,  B29C64/153 ,  B29C64/20 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y50/02 ,  B33Y70/00 ,  G01N23/20091 ,  G01N23/2252 ,  G01N33/20 ,  Y02P10/295

Abstract: A method for non-destructive evaluation of a manufacturing process when forming a three-dimensional article through successive fusion of parts of a metal powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the method comprising the steps of collecting an X-ray signal, created by the electron beam, from at least one position of the first and/or second metal powder layer and/or a melt pool of the first and/or second metal powder layer and/or a fused first and/or second powder layer by an X-ray detector, comparing the X-ray signal with a reference signal, alarming if the generated X-ray signal compared to the reference signal is indicating contamination material of larger amount than a predetermined value and/or a deviation in Atomic % of the powder material larger than a predetermined value.

Abstract translation: 一种通过连续熔融金属粉末床部分形成三维制品的方法，该方法包括三维制品的连续横截面，该方法包括以下步骤：收集 由电子束产生的X射线信号来自第一和/或第二金属粉末层和/或第一和/或第二金属粉末层的熔池的至少一个位置和/或熔融的第一和/或第二金属粉末层和/ /或第二粉末层，通过X射线检测器将X射线信号与参考信号进行比较，如果与参考信号相比产生的X射线信号指示比预定值大的污染物质和/或 粉末原料的原子％的偏差大于预定值。

公开(公告)号：US20160059314A1

公开(公告)日：2016-03-03

申请号：US14750812

申请日：2015-06-25

Applicant: Arcam AB

Inventor： Ulric Ljungblad ,  Ulf Ackelid ,  Lars Loevgren

IPC: B22F3/24 ,  B22F3/105

CPC classification number: B33Y50/02 ,  B22F3/1055 ,  B22F2003/1057 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  Y02P10/295

Abstract: A method for forming at a three-dimensional article through successively depositing individual layers of powder material that are fused together with at least one energy beam so as to form the article, the method comprising the steps of: generating a model of the three-dimensional article; applying a first powder layer on a work table; directing the at least one energy beam from at least one energy beam source over the work table causing the first powder layer to fuse in first selected locations according to the model to form a first cross section of the three-dimensional article; introducing a predetermined surface topography on the first cross section for reducing thickness variations and or increasing the powder packing density in a powder layer provided on top of the first cross section.

Abstract translation: 一种通过连续沉积与至少一个能量束熔合在一起以形成物品的粉末材料的各层形成三维制品的方法，所述方法包括以下步骤：产生三维制品的模型 文章; 将第一粉末层施加在工作台上; 将来自至少一个能量束源的所述至少一个能量束引导到所述工作台上，使得所述第一粉末层根据所述模型在第一选定位置融合，以形成所述三维制品的第一横截面; 在第一横截面上引入预定的表面形貌，以减小设置在第一横截面顶部的粉末层中的厚度变化和/或增加粉末填充密度。

公开(公告)号：US20150071809A1

公开(公告)日：2015-03-12

申请号：US14252984

申请日：2014-04-15

Applicant: Arcam AB

Inventor： Johan Nordkvist ,  Ulf Ackelid ,  Anders Snis

IPC: B22F1/00 ,  B23K15/00 ,  B23K26/34 ,  B22F3/00 ,  B22F3/105

CPC classification number: B22F1/0014 ,  B22F3/008 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1059 ,  B23K15/0086 ,  B23K26/342 ,  B28B1/001 ,  B29C64/153 ,  Y02P10/24 ,  Y02P10/295

Abstract: 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.

Abstract translation: 本发明涉及通过连续融合设置在工作台上的至少一层粉末床的部分来形成三维制品的方法。 所述方法包括以下步骤：提供至少第一和第二粉末罐，在所述第一粉末槽中提供具有第一粒度分布的第一类型的粉末，在所述第二粉末槽中提供第二类型的粉末，其具有第二颗粒 在所述工作台上提供所述第一类粉末的第一子层，在所述第一类粉末的第一层的顶部上提供所述第二类型粉末的第二子层，将所述第一和第二粉末熔化 子层与来自高能束源的高能束同时形成所述三维制品的第一横截面。

公开(公告)号：US20140370323A1

公开(公告)日：2014-12-18

申请号：US14349052

申请日：2012-12-04

Applicant: Arcam AB

Inventor： Ulf Ackelid

IPC: B22F3/105 ,  B22F3/24 ,  B22F3/10

CPC classification number: B22F3/1055 ,  B22F3/1039 ,  B22F3/105 ,  B22F3/24 ,  B22F2201/10 ,  B22F2201/11 ,  B22F2201/12 ,  B22F2201/20 ,  B22F2999/00 ,  B23K15/00 ,  B23K26/342 ,  B29C64/00 ,  B29C64/153 ,  B29C67/00 ,  B33Y30/00 ,  Y02P10/295 ,  Y10T428/12028 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/30 ,  B22F2201/04 ,  B22F2201/016

Abstract: A method for increasing the resolution when forming a three-dimensional article through successive fusion of parts of a powder bed, said method comprising providing a vacuum chamber, providing an electron gun, providing a first powder layer on a work table inside said vacuum chamber, directing an electron beam from said electron gun over said work table causing the powder layer to fuse in selected locations to form a first cross section of said three-dimensional article, providing a second powder layer on said work table, directing the electron beam over said work table causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article, reducing the pressure in the vacuum chamber from a first pressure level to a second pressure level between the providing of said first powder layer and said second powder layer.

Abstract translation: 一种用于通过粉末床部分的连续融合来形成三维制品时的分辨率的方法，所述方法包括提供真空室，提供电子枪，在所述真空室内的工作台上提供第一粉末层， 将来自所述电子枪的电子束引导到所述工作台上，使粉末层在所选择的位置熔化以形成所述三维制品的第一横截面，在所述工作台上提供第二粉末层， 使所述第二粉末层在所选择的位置熔合以形成所述三维制品的第二横截面，从而在提供所述第一粉末层之间将真空室中的压力从第一压力水平降低到第二压力水平 和所述第二粉末层。