公开(公告)号：US11733678B2

公开(公告)日：2023-08-22

申请号：US17251553

申请日：2019-06-03

Applicant: Siemens Aktiengesellschaft

Inventor： Frank Heinrichsdorff ,  Darya Kastsian ,  Ursus Krüger ,  Daniel Reznik ,  Heinz Neubert

IPC: G05B19/4099 ,  B33Y10/00 ,  B22F10/36 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/393 ,  B22F10/368 ,  B22F10/85 ,  B33Y50/00 ,  B22F10/28 ,  B22F12/49 ,  B22F12/67 ,  B22F12/90 ,  B22F10/47

CPC classification number: G05B19/4099 ,  B22F10/36 ,  B22F10/368 ,  B22F10/85 ,  B29C64/153 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02 ,  B22F10/28 ,  B22F10/47 ,  B22F12/49 ,  B22F12/67 ,  B22F12/90 ,  G05B2219/49013 ,  G05B2219/49214

Abstract: Various embodiments include a method for additive manufacturing of a building structure on using a simulation comprising: accessing a data set for the building structure describing the building structure in layers; calculating a global heat development in previous layers based a building history and heat input by an energy beam; determining a local heat development in a vicinity of the heat input; determining the process control based on the global and the local heat development; loading correction measures from a database; and assigning the correction measures locally to individual vectors of a tool path of the energy beam. At least one mass integral is calculated for individual vectors of the tool path. The measures are determined on the basis of a comparison of the calculated mass integral with mass integrals stored in the database.

公开(公告)号：US20230302540A1

公开(公告)日：2023-09-28

申请号：US18002686

申请日：2021-06-07

Applicant: Siemens Aktiengesellschaft

Inventor： Jan Drendel ,  Frank Heinrichsdorff ,  Ruslan Logvinov

IPC: B22F12/17 ,  B22F10/362 ,  B22F12/90

CPC classification number: B22F12/17 ,  B22F10/362 ,  B22F12/90 ,  B33Y10/00

Abstract: In summary, the teachings herein concern methods and/or systems for preheating a build plate for additive manufacturing with at least one energy beam emitting a power. In some examples, the method comprises controlling a power distribution (PXY) of the power (P) over dimensions (X, Y) of the build plate comprising: determining the power (P) of the beam based on a target temperature (TSET) for the base plate and determining the allocation of the power (P) to the dimensions (X, Y) based on a temperature distribution (ΔT) in the base plate.

公开(公告)号：US20230182233A1

公开(公告)日：2023-06-15

申请号：US17920117

申请日：2021-03-03

Applicant: Siemens Aktiengesellschaft

Inventor： Frank Heinrichsdorff

IPC: B23K26/06 ,  G01J9/00 ,  G01J1/42 ,  B23K26/342 ,  B22F10/36 ,  B22F10/85 ,  B33Y50/02

CPC classification number: B23K26/0626 ,  G01J9/00 ,  G01J1/42 ,  B23K26/342 ,  B22F10/36 ,  B22F10/85 ,  B33Y50/02 ,  B22F10/28

Abstract: Various embodiments of the teachings herein include a method for determining a radiation intensity and/or a wavelength of a process light, wherein the melt pool underlying the process light can be generated by irradiating a metal material with an energy beam along a path, wherein the energy beam can be moved in accordance with a power profile along the path. The method may include:

providing a power profile for a section of the path as an input variable for a machine learning model; training the model using historical and/or synthetic power profiles and associated historical or synthetic radiation intensities and/or wavelengths of the process light for the metal material; and determining the radiation intensity and/or the wavelength of the process light as an output variable of the model.

公开(公告)号：US20210255602A1

公开(公告)日：2021-08-19

申请号：US17251553

申请日：2019-06-03

Applicant: Siemens Aktiengesellschaft

Inventor： Frank Heinrichsdorff ,  Darya Kastsian ,  Ursus Krüger ,  Daniel Reznik ,  Heinz Neubert

IPC: G05B19/4099 ,  B29C64/393 ,  B29C64/153 ,  B22F10/368 ,  B33Y10/00 ,  B33Y50/02

Abstract: Various embodiments include a method for additive manufacturing of a building structure on using a simulation comprising: accessing a data set for the building structure describing the building structure in layers; calculating a global heat development in previous layers based a building history and heat input by an energy beam; determining a local heat development in a vicinity of the heat input; determining the process control based on the global and the local heat development; loading correction measures from a database; and assigning the correction measures locally to individual vectors of a tool path of the energy beam. At least one mass integral is calculated for individual vectors of the tool path. The measures are determined on the basis of a comparison of the calculated mass integral with mass integrals stored in the database.

公开(公告)号：US09718934B2

公开(公告)日：2017-08-01

申请号：US14780457

申请日：2014-03-11

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Frank Heinrichsdorff ,  Volkmar Lüthen ,  Gabriele Winkler

IPC: H01B1/20 ,  C08J5/24 ,  D21H17/45 ,  D21H17/56 ,  H01B3/18 ,  H01B3/30

CPC classification number: C08J5/24 ,  C08J2379/04 ,  D21H17/45 ,  D21H17/56 ,  H01B1/20 ,  H01B3/185 ,  H01B3/303

Abstract: Cellulose fibers are impregnated with polyethyleneimine so that the impregnation forms a type of network, which can reduce the specific resistance of the cellulose material owing to the electrical conductivity of the network. The cellulose material can thereby be advantageously adapted to use as electrical insulation of transformers, the cellulose material in this case being soaked in transformer oil. An adaptation of the specific resistance of the cellulose material to the specific resistance of the oil lead to improved dielectric strength of the transformer insulation. A method for impregnation of the cellulose material is described.

公开(公告)号：US20240091858A1

公开(公告)日：2024-03-21

申请号：US18255285

申请日：2021-11-16

Applicant: Siemens Aktiengesellschaft

Inventor： Jan Drendel ,  Ruslan Logvinov ,  Frank Heinrichsdorff

IPC: B22F10/28 ,  B22F10/362 ,  B22F10/364 ,  B22F12/41 ,  B22F12/49

CPC classification number: B22F10/28 ,  B22F10/362 ,  B22F10/364 ,  B22F12/41 ,  B22F12/49 ,  B33Y10/00

Abstract: Various embodiments of the teachings herein include a method for fusing one or more cross sections in a powder layer for building one or more objects layer by layer with electron beam powder bed fusion. The method may include: pre-sintering only the cross sections in the powder layer by scanning the cross sections with a first line energy; and fusing the cross sections by scanning the cross sections with a second line energy. The second line energy exceeds the first line energy by at least a factor of 2.

公开(公告)号：US20240009771A1

公开(公告)日：2024-01-11

申请号：US18254289

申请日：2021-11-05

Applicant: Siemens Aktiengesellschaft

Inventor： Frank Heinrichsdorff ,  Darya Kastsian ,  Daniel Reznik

IPC: B23K26/342 ,  B22F10/28 ,  B33Y10/00

CPC classification number: B23K26/342 ,  B22F10/28 ,  B33Y10/00

Abstract: Various embodiments of the teachings herein include methods for producing an object layer-by-layer using a powder-based 3D printing method by selective fusing of layers of a powder in a powder bed with a selective laser melting process or selective electron beam melting process. At least two successive layers are part of a group. An example method includes, for each group: providing a first layer of the powder; fusing a part of the first layer with first exposure vectors parallel to one another and at a defined spacing; providing a second layer of powder; and fusing a part of the second layer with second exposure vectors arranged at an offset parallel to the first exposure vectors. The exposure vectors of successive groups are rotated by an angle relative to one another.