GB2454779A - Method and Apparatus for forming a Part at a Location on the Work piece by Selective Laser Sintering - Google Patents

Method and Apparatus for forming a Part at a Location on the Work piece by Selective Laser Sintering Download PDF

Info

Publication number
GB2454779A
GB2454779A GB0820390A GB0820390A GB2454779A GB 2454779 A GB2454779 A GB 2454779A GB 0820390 A GB0820390 A GB 0820390A GB 0820390 A GB0820390 A GB 0820390A GB 2454779 A GB2454779 A GB 2454779A
Authority
GB
United Kingdom
Prior art keywords
powder
forming
location
flat surface
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0820390A
Other versions
GB0820390D0 (en
GB2454779B (en
Inventor
Carl David Monnington Brancher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Materials Solutions Ltd
Original Assignee
Materials Solutions Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Materials Solutions Ltd filed Critical Materials Solutions Ltd
Publication of GB0820390D0 publication Critical patent/GB0820390D0/en
Publication of GB2454779A publication Critical patent/GB2454779A/en
Application granted granted Critical
Publication of GB2454779B publication Critical patent/GB2454779B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/141—Processes of additive manufacturing using only solid materials
    • B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50—Means for feeding of material, e.g. heads
    • B22F12/52—Hoppers
    • B22F3/008—
    • B22F3/1055—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/214—Doctor blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/245—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/264—Arrangements for irradiation
    • B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/60—Planarisation devices; Compression devices
    • B22F12/67—Blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Powder Metallurgy (AREA)
  • Laser Beam Processing (AREA)

Abstract

A method for forming a part 17 at a location on work piece 2 by selective laser sintering comprises steps of forming a flat surface 10 at the location if one is not already present, orienting the flat face in an upward horizontal alignment then forming the part 17 by selectively fusing layers of powder 16 which have been deposited on the work piece 2 to create the part 17 and also forming a bund or edge 15 to retain the powder such that succeeding layers of powder may be supported. The apparatus comprises a support for retaining the work piece, a powder delivery head with a recoater blade and a laser wherein the powder delivery head moves vertically and transversely rather than the work piece.

Description

1 2454779 Methods and Apparatus for forming a Part at a Location on a Workpiece In the field of sintering or melting powders to form solid objects by the selective application of energy typically from a laser beam the various different technologies may be characterised as either powder bed' and blow powder'.
In the case of a powder bed machine, for example a commercially available EQS M270 from EQS GmbH Electro Optical Systems, the solid object is formed by the selective application of a laser into successive layers of powder spread from a feed hopper in a tank by a recoater blade. The laser beam is directed by a galvanometer.
By contrast, in a blown powder system (for example a Trumpf DMD 505) powder is ejected adjacent the laser beam at a nozzle' and this physical nozzle requires a physical scanning (with respect to the object to be built/repaired).
Moving either the nozzle (with powder feed lines and laser fibre) or the object (as in the case of Trumpf) is non trivial and requires high speed precision.
This distinction is important when considering the applications of these broadly similar technologies.
In the case of a powder bed system extremely accurate parts may be built, however it is limited to building objects that can be contained within the tank of powder.
The accuracy is achieved by the support of the powder bed and the separation of powder application from powder distribution. The (mass-less) laser beam can be easily scanned by a galvanometer. The powder is spread by a recoater' blade pushing a pile' of powder from a source heap'. The gap between the blade and the top of the part-built object defines the build layer and therefore no precision is required to the ejection of powder from the source hopper.
In the case of the blown powder system no such size limitation exists however the accuracy of build is not as good. This is principally because the powder distribution is physically tied to the laser application. A powder dispensing nozzle surrounds the exit of the laser beam and as this is a physical object (unlike a laser beam that can be directed by mirrors) it has to be physically moved with respect to the build area to selectively apply the laser (and powder).
Further, powder ejection has to be precisely controlled, which is presently unachievable sufficient to build parts accurately. Additionally the object is not supported by a bed of powder during build thereby limiting the designs of objects that can be built.
There is a further, non obvious, limitation to the blown powder system. It is extremely difficult to generate the necessary software and hardware controls to visit each place that needs building only once and/or turn on and off the laser and powder ejection and as such this has not been achieved to date. As a result, parts built generally appear castellated where laser path trajectory crosses because these points received a double application of powder.
By contrast the scanning of a laser beam by a galvanometer is much more precise and easy to achieve And the powder exists as a layer upon the part in a powder bed system, so a second visit' of the laser beam does not increase the build height, it merely re-melts the material
Summary of the Invention
From one aspect the invention consists in a method of forming a part at a location on a workpiece including: forming a flat surface at the location if one is not already present, orientating the flat surface in a horizontal upwardly facing alignment; and forming the part using a powder dispersing system to form successive layers of the part, wherein during the forming stage a laser selectively fuses portions of the powder in a layer to create an element of the part and an element of a bund enabling the forming bund to retain powder around the part and thus allow the succeeding layer to be supported.
The powder dispensing system may include a recoater or levelling blade which can be translated across the flat surface and orthogonal thereto and a delivery hopper that may be moved orthogonal to the surface and may also be translated across the surface with the recoater blade.
A galvanomer delivering the laser beam may also be carried with the delivery hopper orthogonal to the surface (thereby retaining a fixed focus distance to the build plane).
The powder is preferably a metal alloy such as a steel and in particular a high temperature metal alloy such as Cobalt Chrome or a Nickel or Nickel Iron alloy or a refractory metal alloy such as Titanium. These may be differentiated from polymer powder bed systems that operate by heating the bed of polymer powder to just below its melting point and using a relatively low powdered laser to locally achieve sintering or melting.
From another aspect the invention includes apparatus for forming a part on the flat location of a workpiece including: a support for retaining the workpiece in an orientation with the flat surface horizontal and upwardly facing, a powder delivery head for delivering a layer of powder to the flat surface and having a levelling blade for levelling the deposited powder and a laser for fusing selection portions of a Jayer; and a mount for supporting the levelling blade for transverse and vertical movement relative to the surface.
The apparatus may include a motor for driving the head for at least one of transverse or vertical movement.
Whilst it is necessary that the recoater or levelling blade traverses the surface and moves orthogonally with respect to it, and preferable that the galvanometer head moves orthogonally (to maintain a fixed focal length) the delivery hopper may traverse or may be static, releasing a quantity of powder ahead of the recoater blade that traverses and thereby distributing the powder across the powder bed.
There are applications where it is useful to attach e.g. a flange or boss to a large object such as a forged tube. It would be useful if such a small precision part could be built directly onto the large part-including parts too big to fit into a reasonable sized powder bed tank (having regard for the cost of the Inventory of powder and other commercial constraints).
The problem to solve is therefore this; how to adapt the powder bed technology such that it can be applied to build upon or repair larger parts that are not contained within a powder bed.
Although the invention has been defined above it is to be understood it includes any inventive combination of the features set out above in the following
description.
The invention may be performed in various ways and specific embodiments will now be described with reference to the accompanying drawings, in which Figure 1 is a schematic view of apparatus for forming a part on a workpiece; and Figure 2 is an enlarged scrap cross-section showing a part being built.
In a machine generally indicated at 1 there is a workpiece 2 (such as for a turbine engine casing) consisting of a large (e.g. 1 metre dia.) cylindrical surface that needs a boss added.
A galvanometer head 3 controlled by a computer or computers operating software generally indicated at 4 and fed by a laser 5 via a fibre optic cable 6.
A recoater blade 7 with a powder hopper mechanism 8 located above the top of the workpiece 2 is mounted such that it can be driven laterally with respect to the upper surface of the workpiece e.g. along a slideway 11 by a motor 12 under the control of a computer 4. The workpiece and recoater blade are stepped away from each other e.g. by 20-200 microns at a time e.g along another slideway 13 via a mechanism 14 also controlled by a computer 4.
The galvanometer head 3 may also be stepped away thereby maintaining a fixed focal length for the laser beam, for example by being mounted for movement with the hopper mechanism.
The hopper mechanism 8 may have a distributing slit or array of holes 9 controlled by a valve that allows powder to be ejected from the hopper ahead of the recoater blade. The important point to note is that this powder ejection does not need to be precise as to location or timing as it is the recoater blade that distributes it across the surface to a depth defined by the clearance between the blade and the surface Indeed the hopper mechanism 8 may be static or moving only orthogonally with respect to the upper surface and holes 9 deliver the powder as a dump' ahead of the recoater blade that then traverses the powder bed 16 distributing the powder as a layer.
It is advantageous if the recoater blade is capable of grinding off rough material e.g. weld splatter' and e.g. is made of ceramic and rigidly mounted on a slideway.
In treating the 3D CAD files for use by the machine in addition to the usual manipulations well know to those skilled in the art, an additional feature is added-a bund' or outer wall 15 surrounding the location of the part to be built.
This bund is large enough to contain the area of the part to be built 17 and sufficient to retain a bed of powder 16. This burid is built layer by layer as the part is built and can consist of whatever shape or thickness is most desirable to achieve the purpose.
Whereas the blown powder system can address curved and non horizontal surfaces the powder bed approach can only address essentially flat horizontal surfaces.
In one embodiment, the inventive method of creating the boss is therefore to: a. Create a flat area 10 on the workpiece as required (if necessary) e.g. by grinding b. Locate and rigidly mount the workpiece with respect to the laser beam from the galvanometer head 3 and the recoater blade 7.
c. Operate the machine broadly as a powder bed machine as is well known, excepting that a powder bed is created and retained by the bund built at the same time as the boss.
It can similarly be seen that instead of preparing a flat area upon which to build a new part a defective area could be ground away and rebuilt using this invention.

Claims (8)

1. A method of forming a part at a location on a workpiece including: (a) forming a flat surface at the location if one is not already present; (b) orientating the flat surface in a horizontal upwardly facing alignment; and (c) forming the part using a powder dispersing system to form successive layers of the part, wherein during the forming stage a laser selectively fuses portions of the powder in a layer to create an element of the part and an element of a bund enabling the forming part to retain powder around the part and thus allow the succeeding layer to be supported.
2. A method as is claimed in claim 1 wherein the powder bed is not heated above half the melting point of the powder.
3. A method as is claimed in claim 1 wherein the powder is a metal alloy.
4. A method as claimed in claim 1 wherein the powder dispensing systems includes a delivery hopper which can be translated across the flat area and orthogonally thereto and a recoater blade carried on the hopper.
Apparatus for forming a part on a flat location of a freestanding workpiece including: (a) a support for retaining the workpiece in an orientation with the flat surface horizontal and upwardly facing; (b) a powder delivery head for delivering a layer of powder to the flat surface and having a recoater blade for distributing and levelling the deposited powder by means of a traverse of the flat surface and a laser for fusing selection portions of a layer; and (c) a mount for supporting the head for transverse and vertical movement relative to the surface.
6. Apparatus as claimed in claim 5, further including a motor for driving the head for at least one of transverse or vertical movement.
7. Apparatus as claimed in claim 5, further including a rigidly mounted recoater blade that in addition to distributing powder also grinds off rough material.
8. Apparatus as claimed in claim 7 where the recoater blade is made of a ceramic material.
GB0820390.3A 2007-11-15 2008-11-07 Method and Apparatus for forming a Part at a Location on a Workpiece Active GB2454779B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0722429.8A GB0722429D0 (en) 2007-11-15 2007-11-15 A method of making an article

Publications (3)

Publication Number Publication Date
GB0820390D0 GB0820390D0 (en) 2008-12-17
GB2454779A true GB2454779A (en) 2009-05-20
GB2454779B GB2454779B (en) 2012-12-05

Family

ID=38896358

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0722429.8A Ceased GB0722429D0 (en) 2007-11-15 2007-11-15 A method of making an article
GB0820390.3A Active GB2454779B (en) 2007-11-15 2008-11-07 Method and Apparatus for forming a Part at a Location on a Workpiece

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0722429.8A Ceased GB0722429D0 (en) 2007-11-15 2007-11-15 A method of making an article

Country Status (1)

Country Link
GB (2) GB0722429D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2335834A1 (en) * 2009-12-15 2011-06-22 Siemens Aktiengesellschaft Arrangement for depositing coating powder on a rotational symmectric body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5156697A (en) * 1989-09-05 1992-10-20 Board Of Regents, The University Of Texas System Selective laser sintering of parts by compound formation of precursor powders
WO1996014203A1 (en) * 1994-11-02 1996-05-17 Eos Gmbh Electro Optical Systems Process and device for producing a three-dimensional object
US5658412A (en) * 1993-01-11 1997-08-19 Eos Gmbh Electro Optical Systems Method and apparatus for producing a three-dimensional object
US6682688B1 (en) * 2000-06-16 2004-01-27 Matsushita Electric Works, Ltd. Method of manufacturing a three-dimensional object
US20040099996A1 (en) * 2002-11-07 2004-05-27 Frank Herzog Process for manufacturing a shaped article, in particular powder stereolithographic or sintering process
US20050074550A1 (en) * 2001-02-07 2005-04-07 Martin Leuterer Device for treating powder for a device which produces a three-dimensional object device for producing a three-dimensional object and method for the production thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5156697A (en) * 1989-09-05 1992-10-20 Board Of Regents, The University Of Texas System Selective laser sintering of parts by compound formation of precursor powders
US5658412A (en) * 1993-01-11 1997-08-19 Eos Gmbh Electro Optical Systems Method and apparatus for producing a three-dimensional object
WO1996014203A1 (en) * 1994-11-02 1996-05-17 Eos Gmbh Electro Optical Systems Process and device for producing a three-dimensional object
US6682688B1 (en) * 2000-06-16 2004-01-27 Matsushita Electric Works, Ltd. Method of manufacturing a three-dimensional object
US20050074550A1 (en) * 2001-02-07 2005-04-07 Martin Leuterer Device for treating powder for a device which produces a three-dimensional object device for producing a three-dimensional object and method for the production thereof
US20040099996A1 (en) * 2002-11-07 2004-05-27 Frank Herzog Process for manufacturing a shaped article, in particular powder stereolithographic or sintering process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2335834A1 (en) * 2009-12-15 2011-06-22 Siemens Aktiengesellschaft Arrangement for depositing coating powder on a rotational symmectric body
US8173207B2 (en) 2009-12-15 2012-05-08 Siemens Aktiengesellschaft Arrangement for depositing coating powder on a rotational symmetric body

Also Published As

Publication number Publication date
GB0820390D0 (en) 2008-12-17
GB2454779B (en) 2012-12-05
GB0722429D0 (en) 2007-12-27

Similar Documents

Publication Publication Date Title
US20090286007A1 (en) Methods and apparatus for forming a part at a location on a workpiece
EP3862128B1 (en) Method of controlling the cooling rate of a melt pool of a powder bed, and direct metal laser melting manufacturing system with in-line laser scanner
US6504127B1 (en) Laser consolidation methodology and apparatus for manufacturing precise structures
Gibson et al. Directed energy deposition processes
EP3554795B1 (en) Additive manufacturing systems and methods
US10029417B2 (en) Articulating build platform for laser additive manufacturing
US6861613B1 (en) Device and method for the preparation of building components from a combination of materials
KR100305425B1 (en) Method and apparatus for forming freeform 3D article
Mumtaz et al. Selective laser melting of thin wall parts using pulse shaping
US20180369961A1 (en) Treatment of solidified layer
US6756561B2 (en) Laser consolidation apparatus for manufacturing precise structures
CN115401213B (en) Tool assembly and method for alignment member for powder bed additive manufacturing repair process
Paul et al. Metal additive manufacturing using lasers
US20170008126A1 (en) An additive manufacturing system with a multi-energy beam gun and method of operation
Pinkerton Laser direct metal deposition: theory and applications in manufacturing and maintenance
JP2020514127A (en) Additional manufacturing with an energy supply system having a rotating polygon and a second reflecting member
US11097350B2 (en) Pre-fusion laser sintering for metal powder stabilization during additive manufacturing
US20180214955A1 (en) Additive manufacturing system, article, and method of manufacturing an article
US20090081066A1 (en) Method of forming an article
WO2020058722A1 (en) A powder bed: additive manufacturing
CN116511524B (en) Tool assembly for magnetically aligning components in an additive manufacturing machine
EP4269071A2 (en) Methods and systems for vacuum powder placement in additive manufacturing systems
Martukanitz Directed-energy deposition processes
GB2454779A (en) Method and Apparatus for forming a Part at a Location on the Work piece by Selective Laser Sintering
EP3749473A1 (en) Rotating direct metal laser melting systems and methods of operation

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20150423 AND 20150430

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20180315 AND 20180326

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20220908 AND 20220914