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公开(公告)号：US20150034606A1
公开(公告)日：2015-02-05
申请号：US14337566
申请日：2014-07-22
申请人： ROLLS-ROYCE PLC
CPC分类号： B23K15/02 , B22F3/1055 , B22F2003/1057 , B23K15/0026 , B23K15/0086 , G01N23/203 , G01N2223/102 , G01N2223/62 , Y02P10/295
摘要： An additive layer manufacture machine generates a first electron beam for scanning a powder layer to be melted in a selective melting process. Backscatter electrons from the interaction between the first electron beam and the powder layer is detected by a backscatter detector. Any defects in the powder layer can then be identified, or inferred, from the detected backscatter electrons. If necessary, any defects can be removed from the powder layer before selective melting. Once the powder layer has been inspected and if necessary improved, selective melting of the layer is performed in order to produce a layer of the component. The process may be repeated to generate a finished component with good mechanical properties.
摘要翻译： 添加层制造机器在选择性熔融过程中产生用于扫描待熔融的粉末层的第一电子束。 通过反向散射检测器检测来自第一电子束和粉末层之间的相互作用的反向散射电子。 然后可以从检测到的反向散射电子中识别或推断粉末层中的任何缺陷。 如果需要，在选择性熔融之前可以从粉末层中除去任何缺陷。 一旦已经检查了粉末层，并且如果需要的话，进行该层的选择性熔融，以便产生该组分的层。 可以重复该过程以产生具有良好机械性能的成品组分。
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公开(公告)号：US20150037599A1
公开(公告)日：2015-02-05
申请号：US14337604
申请日：2014-07-22
申请人： ROLLS-ROYCE PLC
CPC分类号： B22F3/1055 , B22F2003/1056 , B23K15/0013 , B23K15/002 , B23K15/0086 , Y02P10/295 , Y10T428/12028
摘要： An additive layer manufacture (ALM) machine generates a first electron beam for selectively melting a layer of metal powder, and a second electron beam for detecting defects in the selectively melted layer once it has solidified. The second electron beam has a lower power than the first electron beam so as to be used to identify any defects without performing further melting. If any defects are detected, they can be removed, for example by re-melting, before the next layer of powder is supplied. The process may be repeated to generate a finished component with good mechanical properties.
摘要翻译： 添加层制造（ALM）机器产生用于选择性地熔融金属粉末层的第一电子束和用于检测选择性熔融层中的缺陷固化后的缺陷的第二电子束。 第二电子束具有比第一电子束低的功率，以便用于识别任何缺陷而不进行进一步的熔化。 如果检测到任何缺陷，可以在提供下一层粉末之前，例如通过再熔化来除去它们。 可以重复该过程以产生具有良好机械性能的成品组分。
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公开(公告)号：US20160228975A1
公开(公告)日：2016-08-11
申请号：US15012076
申请日：2016-02-01
申请人： ROLLS-ROYCE plc
IPC分类号： B23K15/00
CPC分类号： B23K15/0086 , B22F5/04 , B22F2003/245 , B22F2003/247 , B22F2005/001 , B22F2005/002 , B22F2202/01 , B22F2998/10 , B23K15/0026 , B23P15/04 , B33Y10/00 , B33Y80/00 , F05D2230/31
摘要： There is disclosed a method for the production of a three-dimensional product (2) via an additive layer manufacturing process such as an electron beam manufacturing process to selectively fuse parts (17) of a powder bed (16), said parts (17) corresponding to successive cross-sections of the product (2). The method involves the use of said additive layer manufacturing process to form a tool (12) by selectively fusing additional parts (18) of the powder bed (16), said additional parts (18) corresponding to successive cross-sections of the tool (12). The method also comprises a subsequent step of manipulating the tool (12) perform a processing function on the product (2).
摘要翻译： 公开了一种通过诸如电子束制造工艺的添加剂层制造工艺生产三维产品（2）的方法，用于选择性地熔化粉末床（16）的部件（17），所述部件（17） 对应于产品（2）的连续横截面。 该方法包括使用所述添加剂层制造工艺来通过选择性地熔化粉末床（16）的附加部分（18）形成工具（12），所述附加部分（18）对应于工具的连续横截面 12）。 该方法还包括以下步骤：操纵工具（12）对产品（2）执行处理功能。
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公开(公告)号：US20150037601A1
公开(公告)日：2015-02-05
申请号：US14337528
申请日：2014-07-22
申请人： ROLLS-ROYCE PLC
CPC分类号： B23K15/0086 , B22F3/1055 , B22F2003/1056 , B22F2998/00 , B23K15/002 , B29C64/153 , B33Y10/00 , H01J37/28 , Y02P10/295 , Y10T428/12389 , B22F2003/247 , B22F3/15
摘要： An additive layer manufacture (ALM) machine comprises an energy source (180) for selectively melting a layer of metal powder (500), and an electron beam (110) for determining the shape of the selectively melted solid layer (320) once it has solidified. The shape is determined by detecting backscattered electrons (130) from the interaction between the electron beam (110) and the solid layer (320). If the shape of the solid layer (320) is outside a determined tolerance, it may be corrected before proceeding. The process may be repeated to generate a finished component (300) with good mechanical properties and accurate geometry.
摘要翻译： 添加剂层制造（ALM）机器包括用于选择性地熔化金属粉末（500）的能量源（180）和用于确定选择性熔化的固体层（320）的形状的电子束（110），一旦它具有 凝固 通过从电子束（110）和固体层（320）之间的相互作用检测反向散射电子（130）来确定形状。 如果固体层（320）的形状在确定的公差之外，则可以在继续之前校正。 可以重复该过程以产生具有良好机械性能和精确几何形状的成品组件（300）。
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公开(公告)号：US20140367367A1
公开(公告)日：2014-12-18
申请号：US14290178
申请日：2014-05-29
申请人： ROLLS-ROYCE PLC
IPC分类号： B23K15/00
CPC分类号： B23K15/0086 , B22F3/1055 , B22F5/009 , B22F2003/1058 , B23K15/0006 , B29C64/153 , B29C64/40 , Y02P10/295
摘要： An additive layer manufacturing method includes the steps of: a) laying down powder layer on powder bed, and b) focussing energy on an area of powder layer to fuse area of powder layer and thereby form a cross-section of the product; wherein steps a) and b) are repeated to form successive cross-sections of product, and wherein at least one of said steps b) involves focussing energy on an area of respective powder layer which is unsupported by a previously formed cross-section of product to thereby form a downwardly facing surface of product. Method is at least some of said successive steps b) involve focussing energy on a support area of respective powder layer, to fuse support area and thereby form successive cross-sections of a support pin within powder bed, support pin extending outwardly from downwardly facing surface of product when it is formed, so as to support downwardly facing surface.
摘要翻译： 一种添加剂层制造方法，包括以下步骤：a）在粉末床上放置粉末层，b）将粉末层上的能量聚焦在粉末层的区域上，以熔化粉末层的面积，从而形成产品的横截面; 其中重复步骤a）和b）以形成产物的连续横截面，并且其中所述步骤b）中的至少一个包括将能量聚焦在相应粉末层的不被先前形成的产品横截面无支撑的区域上 从而形成产品向下的表面。 方法是所述连续步骤中的至少一些步骤b）包括将能量聚焦在相应粉末层的支撑区域上，以熔化支撑区域，从而形成粉末床内的支撑销的连续横截面，从向下的表面向外延伸的支撑销 的产品，以便支撑向下的表面。
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