EP3999266A1 - Structure de soutien - Google Patents

Structure de soutien

Info

Publication number
EP3999266A1
EP3999266A1 EP20771480.9A EP20771480A EP3999266A1 EP 3999266 A1 EP3999266 A1 EP 3999266A1 EP 20771480 A EP20771480 A EP 20771480A EP 3999266 A1 EP3999266 A1 EP 3999266A1
Authority
EP
European Patent Office
Prior art keywords
product
connection
wall
area
support structure
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.)
Pending
Application number
EP20771480.9A
Other languages
German (de)
English (en)
Inventor
Dragan MATEKALO
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3999266A1 publication Critical patent/EP3999266A1/fr
Pending legal-status Critical Current

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
    • B29C64/40—Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
    • B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
    • 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
    • B33Y80/00—Products made by additive manufacturing
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • 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

Definitions

  • the present invention refers to a supported product manufac tured using additive manufacturing, wherein the supported product provides an improved support structure. Furthermore, the present invention refers to a product required from such supported product. Additionally, the present invention refers to a method of manufacturing a product utilizing such sup ported product. Furthermore, the present invention refers to the use of such improved support structure to improve the manufacturing of such product. Additionally, the present in vention refers to a computer program product utilized to per form such method. Furthermore, the present invention refers to a device for providing such computer program product.
  • Additive manufacturing is a very flexible method of manufac turing utilizing building up a product by adding material on an existing part or right from the scratch.
  • Methods like 3D printing for example, utilize a metal or metal composition powder being melted layer by layer to manufacture a complex 3D structure.
  • certain requirements are still to be considered. For example, it can be necessary to support a part of such product to be printed to utilize meth ods like selective laser melting (SLM).
  • SLM selective laser melting
  • such support may be provided by a structure also printed using such addi tive manufacturing method along with the real part and later be removed. Further process steps like grinding or milling steps can be utilized in this context to provide the final product.
  • post processing steps require a sig- nificant amount of time and effort.
  • it is re quired to manually remove the corresponding support structure increasing the time required and possibly leading to damages of the product resulting in the product to be manufactured again. Therefore, a solution to provide a simple removal pro cedure for a wide variety of products especially minimizing the required manual interaction would be beneficial.
  • the present invention refers to a supported product manufactured using additive manufacturing, preferably 3D printing, wherein the supported product con tains a product and a support structure, wherein the product and the support structure are connected by means of a connec tion providing different resistances against breaking in dif ferent directions.
  • connection can be provided in differ ent forms like a multitude of structures extending between the product and the support structure, a complex shaped structure like a multitude of interconnected walls providing a grid extending between the product and the support struc ture or combinations thereof.
  • a common feature of typical em bodiments of such connection is that it is a layer between the support structure and the product and provides no homoge neous material.
  • connection typically consists of a multi tude of structures extending between the product and the sup port structure, wherein the space between these structures is either empty or filled with remains of the manufacturing pro cedure.
  • inhomogeneous support especially providing inhomogeneous breaking behavior to significantly simplify the removal pro cedure.
  • support structure providing the required stability during manufactur ing and, for example, further processing steps like the re moval of powder.
  • the structure can be brittle enough to simply remove the support structure by hitting said structure on the side based on the weakness of the structure against some force applied in such direction. This allows to significantly reduce the amount of labor for providing the corresponding parts, as the required post processing to re move support structure can be reduced to an almost insignifi cant amount of work compared to conventional support struc tures.
  • the present invention refers to a product manufactured by removing the support structure of the inventive supported product. While it is possible to re move all remains of the connection from the product it was noted that for typical applications the amount of the connec tion remaining after breaking off the support structure is very low and the product can be easily utilized without such additional process step. In such cases the product still pro vides remains of the connection during its usage.
  • the present invention refers to a use of the support structure for supporting a product dur ing an additive manufacturing process, wherein the support structure is adapted to be removed to provide the product, wherein the product and the support structure are connected by means of a connection providing different resistances against breaking in different directions.
  • the present invention refers to a computer program product with program commands to perform the inventive method.
  • the present invention refers to a device for providing an inventive computer program product, wherein the device stores the computer program product and/or provides the computer program product for further use.
  • Fig. 1 shows a schematic side view of a guide vane of a gas turbine.
  • Fig. 2 shows a schematic side view of the guide vane of fig ure 1 being supported by multiple inventive support struc tures.
  • Fig. 3 shows a schematic side view of figure 2, wherein the arrows indicate the direction the support structure provides an increased stability.
  • Fig. 4 shows a cutout of the schematic side view of figure 2, wherein a part of the connection of the inventive support structure is shown.
  • Fig. 5 shows a cutout of a schematic cross-section through a part of the connection connecting the product and the support structure.
  • Fig. 6 shows a cutout of a schematic cross-section showing the part of the connection as shown in figure 5 including the corresponding part of the product and the support structure.
  • Fig. 7 shows a schematic side view of the clamp utilized in a gas turbine supported by an inventive support structure and connected by a structure of the connection comparable to the part of the connection shown in figure 5.
  • Fig. 8 shows a cutout of the schematic side view of the sup ported product as shown in figure 7, wherein the end part of the support structure supporting the clamp is shown.
  • the present invention refers to a supported product as specified above.
  • the supported product contains at least two support structures. For example, this allows to minimize the material required and utilize parts of the product to stabi lize the supported product reducing the overall amount of ma terial required to provide the supported product.
  • the manufactur ing method includes building the supported product starting from a base layer building upon that base layer the remaining supported product.
  • Such base layer thus, provides a side the supported product is to be placed upon.
  • the sup ported product provides a side to be placed upon, wherein the connection provides a higher resistance against breaking per pendicular to the side to be placed upon than parallel to a plane along the side to be placed upon. It was noted, that such design significantly simplifies the post processing for typical cases.
  • additive manufacturing methods are well established despite being relatively new.
  • Especially additive manufacturing meth ods like 3D printing became topic for industrial applications in the past years and show a big potential to complement or replace existing conventional methods of manufacturing.
  • the additive manufacturing methods are characterized by that a material is applied without some limiting element like some casting mold to build up the product.
  • Examples of especially useful additive manufacturing methods are selective laser melting, electron beam melting and binder jetting.
  • Such meth ods either build up a product utilizing a powder that typi cally is removed in a later step like it is done for binder jetting.
  • Very useful for the current application are 3D printing additive manufacturing methods like selective laser melting and electron beam melting building up the product from a powder, wherein the powder is melted layer by layer.
  • the supported prod uct has been manufactured using a metal powder or metal com position powder.
  • SLM selective laser melting
  • EBM electron beam melting
  • corresponding manufacturing methods allow to easily realize the inventive support structures and simultaneously benefit greatly from the inventive design, as such support structures allow to realize new designs for in dustrial purposes providing a significantly simplified post processing.
  • the additive manufacturing allows to flexibly design the properties of the supported product as required selecting the design according to certain frame conditions.
  • the in ventive supported product and method can be easily adapted to a plurality of possible products.
  • the force required for breaking off the support structure applied perpendicular to the side to be placed upon is at least 3 times, more preferred at least 5 times, even more preferred at least 15 times, the force required for breaking off the support structure paral lel to a plane along the side to be placed upon. Adapting it according to such requirement further simplifies the labor required to provide the inventive support structure for arbi trary products.
  • the supported prod uct has been manufactured by selectively melting layers of metal powder and/or metal alloy powder, wherein the connec tion is adapted to conduct the heat away from the currently processed layer. This allows to significantly increase the speed of the manufacturing procedures, as the cooling down of each layer before a new powder layer is applied can be short ened. For example, it is possible to realize the required heat conductivity by including a multitude of thin walls or thin pillars preferably direct in the same direction distrib uted over a larger area.
  • Such thin walls provide little resistance against breaking in one direction, while they provide a significant increase the stability in two di rections.
  • Thin pillars on the other hand provide little re sistance against such breaking force into the directions, while the structure is stable direction of such pillar.
  • Such multitude of thin walls or thin pillars allow to easily tai lor the breaking behavior based on requirements while still the heat conductivity can be tailored based on the number of walls and pillars provided.
  • a further method to provide a generic design method especial ly allowing to automate the attachment of support structures to products utilizes different types of connection areas.
  • the con nection provides at least one first connection area and at least one second connection area, wherein the connection pro vides a higher stability within the at least one first con nection area compared to the connection within the at least one second connection area.
  • Such higher stability can, for example, be shown by replacing the structure of the connec tion within the first connection area by the structure of the connection utilized in the second connection area for deter mining the stability of the supported product by means of an example or simulation.
  • such determination may be di rectly realized by simulating the stability.
  • the stability perpendicular to the side to be placed upon is determined.
  • such high er stability can be realized by including thicker structures connecting the product and the support structure.
  • An example of a support structure that can be used for such higher sta bility is a wall like structure containing holes.
  • the second area can be filled with a thin walled lattice structure.
  • Magics structure is known to the skilled person as Magics structure.
  • the at least one first connection area and the at least one second connection area each provides an area based on the theoreti cal surface area of the product within the area of the con nection in case the support structure including the connec tion would be removed, wherein the area of each of the at least first connection area provides a size of the at least 1%, more preferred at least 2%, even more preferred at least 2.5%, of the total size of the area of the at least one first connection area and the at least one second connection area.
  • the at least one first connection area and the at least one second connection area each provides an area based on the theoreti cal surface area of the product within the area of the con nection in case the support structure including the connec tion would be removed, wherein the area of each of the at least second connection area provides a size of the at least 7%, more preferred at least 9%, even more preferred at least 10%, of the total size of the area of the at least one first connection area and the at least one second connection area.
  • the total size of the area of the at least one first connection area and the at least one second connec tion area amounts to 100% of the area of the connection.
  • a very simple and beneficial type of first connection area takes the shape of a line extending through the connection.
  • the at least one first connection area contains at least one linear first connection area, more preferred each of the at least one first connection area is a linear area.
  • linear area does not have to be straight, but can also, for example, be curved.
  • Providing such linear first connection areas result ing in wall like structures provide a significant stability along the wall, while the stability is significantly de creased perpendicular to such wall like structure. Further more, it was surprisingly noted that the properties of such wall like structure can be easily tailored as desired.
  • the at least one first connection area is a linear area being en closed by the at least one second connection area.
  • it can be realized in form of a central linear firm con nection between the product and the support structure, where in on each side of this first connection area the second con nection area of lower stability is located.
  • the connection can consist of one central linear first connection area enclosed by two second connection areas.
  • a further design that can be realized for a multitude of product provides multiple linear areas arranged at opposite sides of the connection.
  • the at least first connection are two line ar areas located at opposite sides of the connection, wherein the second connection area is located between these two line ar areas.
  • it can be realized in form of two lin ear firm connections limiting the connection on opposite sides, wherein the area between those two linear firm connec tions is provided in form of a second connection area.
  • a small second connection area is located even behind at least one or both of the first connection areas. In such case these second connection areas represent the outer parts of the connection.
  • the distance from the end of the connection to each of the first connection areas is at most 10%, more pre ferred at most 8%, even more preferred at most 4%, of the to tal length of the connection measured perpendicular to the linear first connection.
  • a further design that can be realized for a variety of dif ferent designs utilizes a first connection area surrounding the second connection area.
  • the at least one first connection area surrounds a central part of the connection containing a sec ond connection area.
  • such first connection area can be located at the outer end of the connection or at least one further second connection area can be located adjacent to said first connection area and between the end of the connec tion and said first connection area.
  • the distance from the end of the con nection to the first connection areas is at most 10%, more preferred at most 8%, even more preferred at most 4%, of the total length of the connection measured perpendicular to the linear first connection.
  • the ratio of the first connection area and the second connection area is typically above for certain limit. According to further em bodiments it is preferred that the first connection area and the second connection area each provides an area based on the theoretical surface area of the product within the area of the connection in case the support structure including the connection would be removed, wherein the area of the second connection area is at least 3 times, more preferred at least 10 times, even more preferred at least 30 times, the size of the area of the first connection.
  • connection provides at least one wall like struc ture, more preferred linear wall like structure, wherein the wall like structure contains holes. It is possible and bene ficial for specific embodiments to provide such wall like structures as circles or in a rectangular shape enclosing an area of the connection. In such cases the connection is typi cally harder to break and provides more freedom for the di rection of the force applied to break off the support struc ture. For typically embodiments, it is, however, preferred to provide a linear wall like structure. In such case a typical ly lower force is necessary and the provision of the specific design is easier and faster.
  • linear structure does not have to be straight, but can also, for example, be curved. This can be necessary to, for example, adapt to the outer form of the product or to provide a highly defined breaking behavior.
  • Such type of structural element can easily be implemented utilizing automatic design tools as typically used for de signing additive manufacturing instructions.
  • connection provides least one wall like structure, more preferred linear wall like structure, wherein the wall like structure contains at least one hole, wherein at least one hole provides connection lines, wherein the connection lines represent lines extending from one side of the hole to the other side of the hole through a center point of the hole, wherein the center point of the hole is a point is a cross section along the center plane of the wall like structure providing the smallest dif ference between the smallest and biggest connection line in the cross section along the center plane of the wall, wherein the smallest connection line of the at least one hole is at least 0.25mm, more preferred 0.3mm.
  • the holes in the wall like structure provide such diameter, based on the volume of mate rial left out to provide the hole.
  • connection provides at least one wall like structure, more preferred linear wall like structure, wherein the wall like structure contains at least two holes, wherein the holes provide connection lines, wherein the connection lines repre sent lines extending from one side of the hole to the other side of the hole through a center point of the hole, wherein the center point of the hole is a point is a cross section along the center plane of the wall like structure providing the smallest difference between the smallest and biggest con nection line in the cross section along the center plane of the wall, wherein the distance between two neighboring holes, especially two neighboring holes providing the aforementioned minimum size, of at least 90%, more preferred at least 97%, even more preferred at least 99%, of the holes is at least 1.4 times, more preferred at least 1.5 times, even more pre ferred at least 1.7 times, of the smallest connection line of the
  • connection providing a smoothened transition from the support structure to the product Parts to be especially beneficially provided in this manner for typical embodiments are wall like structures and first connection areas.
  • the additive manufacturing is 3D printing providing a printing direction
  • the connection provides at least one wall like structure, more preferred linear wall like structure, and/or at least one first connection area containing connect ing elements, wherein preferred at least 90%, even more pre ferred at least 95%, even more preferred at least 99%, of the outer surface of the at least one wall like structure and/or the outer surface of the connecting elements provide an angle selected of at least 40°, more preferred at least 42°, even more preferred at least 44°, wherein the angle is measured in relation to a plane perpendicular to the printing direction.
  • the smallest angle possible is measured resulting in an upper limit of the angle being measured being 90°. This seems to provide, for example, very stable connections allow ing to significantly divert the forces originating from the weight of the product during the manufacturing process.
  • such wall like structures can be provided with an indentation, preferably located at the center area of the wall like structure, to further decrease the stability of said structure in one dimension.
  • the connection provides at least one wall like structure, more preferred linear wall like structure, wherein the wall like structure provides an indentation of the wall like structure in a cross-section perpendicular to the wall like structure over length of at least 90%, more preferred at least 93%, even more preferred at least 96%, of the wall like structure, wherein the term perpendicular to the wall like structure re fers to an orientation being perpendicular to the center plane through the wall like structure.
  • such indentation take the shape of a line like indentation on at least on side of the wall like structure.
  • Such line like indentation preferably typically extends es sentially parallel to the surface of the component.
  • such indentation is located in a central area of the wall like structure, wherein the central area of the wall like structure represents 60%, more preferred 50%, even more preferred 30%, of the wall like structure extending halfway from the middle of the wall like structure to the component and halfway from the middle of the wall like structure to the support structure.
  • Such indentation of the wall like structure can, for example, be realized as decreasing thickness of the wall like struc ture.
  • the thickness of the wall like structure for example, starting from the support structure first stays con stant. Hereafter, it starts to decrease before reaching a minimum and starting to increase again. Either it increases until it reaches the product or it reaches a defined thick ness before and stays at this thickness value until it reach es the component. While such arrangements are typically bene ficially to be utilized for many applications of the present invention different arrangements to realize such indentation are possible.
  • the indentation can, for example, provide a smooth transition equaling a curved surface or a sharp bend when directly switching from decreasing to in creasing thickness.
  • Such indentations as specified above can be utilized to flex ibly tailor a specific breaking behavior.
  • techniques utilized to lumber can be benefi cially applied to define a breaking direction and prevent, for example, material to be chipped off the product.
  • Typical ly it is preferred to provide such indentations on both sides of the wall like structure, more preferred linear wall like structure. This allows to easily break the wall like structure from both sides, wherein the crack extends from one indention on one side to the other indentation on the other side.
  • the wall like structure can be shaped like an X in such cross-section to provide a point of minimized stability extending along the wall like structure.
  • the wall like structure contains at least N holes, wherein
  • the holes provide an average size in a cross- section along the wall like structure being at least 0.2-H 2 , more preferred at least 0.23-H 2 , even more preferred at least
  • the simpli fied procedure to provide the inventive connection includes to define an upper limit of the distance of neighboring roles that should be fulfilled.
  • the wall like structure provides a distance D n of at most 2-H, more preferred at most 1.6-H, even more preferred at most 1.1-H, between two neighboring holes over at least 90%, more preferred at least 93%, even more pre ferred 96%, of the length of the wall like structure.
  • the holes provide an average size in a cross-section along the wall like structure being at least 0.2-H 2 , more preferred at least 0.23-H 2 , even more preferred at least 0.27-H 2 .
  • connection should provide a very inho mogeneous design
  • some automated design method containing a specified limit of the distance between the holes is an easy possibility to provide the required reumbled stability of such wall like structure.
  • holes do not have to be adjacent holes.
  • a very small hole not ful filling the requirement might be located between two holes fulfilling the requirement still resulting in said area to be included in the calculation of the overall area fulfilling said requirement.
  • the inventive design is espe cially usefully applied to certain materials.
  • the supported product consists of metal, a metal alloy, a ceramic material or glass, more preferred of metal or a metal alloy.
  • a group of materials especially suited for this purpose are nickel superalloys.
  • the present invention refers to a product manufactured by removing the support structure of the inventive supported product.
  • the inventive design can be especially beneficially applied to components of a continuous flow engine.
  • continuous flow engines utilize a stream of fluid continuously flowing through the engine to rotate a rotor converting the kinetic energy into electrici ty.
  • such fluid stream can be generated by means of burning a fuel using a burner in a gas turbine or boiling a liquid like water in a steam generator.
  • the continuous flow engine is a gas turbine. While the inventive design can be utilized for a huge variety of different compo- nents the manufacturing process of components like the hot path components of gas turbine benefit significantly from the inventive design.
  • the present invention refers to a method of manufacturing a product containing the steps of
  • the inventive manufacturing method allows to already include signs or contact points to indicate how force should be ap plied by the operator wanting to removed the support struc ture.
  • the method contains including a sign and/or contact point on the support struc ture indicating the point or direction to apply force to re move the support structure. This allows to greatly reduce the risk of incorrect application of force for the post pro cessing.
  • the highly flexible manufacturing method brings the risk that the operator trying to remove the support structure might be unsure how to apply the corresponding force. Indicating such information directly on the support structure significantly simplifies the pro cess.
  • the present invention refers to a use of the support structure for supporting a product dur ing an additive manufacturing process, wherein the support structure is adapted to be removed to provide the product, wherein the product and the support structure are connected by means of a connection providing different resistances against breaking in different directions.
  • the present invention refers to a computer program product, tangibly embodied in a machine- readable storage medium, including instructions operable to cause a computing entity to execute an inventive method.
  • the present invention refers to a storage device for providing an inventive computer program product, wherein the device stores the computer program prod uct and/or provides the computer program product for further use.
  • Fig. 1 shows a schematic side view of a guide vane of a gas turbine being an example of the product 2.
  • the left and right side of the guide vane shown in figure 1 provides essentially plain surfaces that can be utilized to start the manufactur ing process utilizing, for example, selective laser melting.
  • the middle part as shown requires a support struc ture for building up this part.
  • Fig. 2 shows a schematic side view of the guide vane of fig ure 1 being supported by multiple inventive support struc tures 3.
  • the support structure 3 is attached to the product 2 by means of a connection being part of the support structure 3, wherein the connection provides different re sistances against breaking in different directions.
  • the connection provides a significant stability against breaking in vertical direction.
  • the support structure 3 can be easily broken off by applying force using, for example, a hammer on the side of the support structure 3.
  • the force required to break off the sup port structure 3 applied horizontally is less than 10 of the force required to break it off when applied vertically.
  • the bottom part of the support structure 3 utilized provides a side of the supported product 1 allowing it to be placed on a plane surface.
  • connection is designed to conduct the heat away from the currently multiplayer during the additive manufacturing meth od utilizing a metal alloy powder being melted layer by layer to build up the supported product 1. Simultaneously, it pro vides the stability required the complex three-dimensional shape of the product 2.
  • Fig. 3 shows a schematic side view of figure 2, wherein the arrows 4 indicate the direction the support structure 3 pro vides an increased stability. This direction represents the vertical direction providing the improved stability of the connection as well as the buildup direction during the addi tive manufacturing process.
  • FIG. 3 Not shown in figure 3 is a sign indicating the direction to apply force to break off the support on the side of the sup port structure 3.
  • Fig. 4 shows a cutout of the schematic side view of figure 2, wherein a part of the connection of the inventive support structure 3 is shown.
  • the main element 5 of the con nection is shown in part providing the major part of the sta bility in horizontal direction.
  • Said element 5 of the connec tion is located in a linear area extending along the middle part of the guide vane.
  • the element 5 provides a plurality of holes 6 decreasing the strength of said element 5 against a force applied horizontally.
  • the weaker connection besides this main element 5 contributing little resistance against breaking of the con nection in horizontal direction.
  • Fig. 5 shows a cutout of a schematic cross-section through a part of the connection connecting the product 2 and the sup port structure.
  • the main element 5 of the connection providing the main stability in horizontal direction is shown in detail.
  • Said element 5 provides a linear wall like structure includ ing holes 6 arranged next to each other along the wall like structure.
  • the holes 6 extend over length of more than 98% of the length of the wall like structure.
  • the wall like structure provides an X-shaped ap pearance with indentations 7 on both sides as can be seen in the cross-section perpendicular to the wall like structure as shown in figure 5. This shape is maintained over the complete length of this element 5.
  • Fig. 6 shows a cutout of a schematic cross-section showing the part of the connection as shown in figure 5 including the corresponding part of the product 2 and the support structure 3.
  • Figure 6 also does not show the part of the connection be sides the elements 5 explicitly shown in figure 5.
  • the space currently shown empty on the left and right side of said ele ment 5 is filled with a lattice structure being Magics struc ture providing little resistance against force applied hori zontally to break off the support structure 3.
  • Fig. 7 shows a schematic side view of a clamp being an exam ple of the product 2 as utilized in a gas turbine.
  • the clamp is supported by an inventive support structure 3' represent ing the supported product 1 .
  • the connection is com parable to the part of the connection as shown in figure 5.
  • the connection in this case consists of element 5.
  • the clamp has been manufactured using selective laser melting starting from the bottom of the support structure 3' repre senting the side to be placed upon 8'.
  • connection is shown in figure 7 provides the significant ly lower resistance against breaking when applying force di rected parallel to a plane along the side to be placed upon. Although, the force required is already significantly lower such direction, it is even lower the direction slightly in clined to such direction. A corresponding sign indicating this direction available on the side of the support structure 3' is not shown in this figure.
  • the embodiment is shown in figure 7 only provides this linear wall like structure connecting the support structure 3' around the product.
  • the specific example as shown in figure 7 provides three groups of holes 6' arranged over the length of the connection to further reduce the resistance against breaking when applying force in horizontal direction.
  • the same or different number of holes 6' can also be arranged equidistant over the length of the wall like structure of the connection.
  • Fig. 8 shows a cutout of the schematic side view of the sup ported product 1' as shown in figure 7, wherein the end part of the connection supporting the clamp is shown in more de tail.
  • This figure clearly shows the indentations 1 on both sides of the wall like structure of the connection.
  • the in dentations 1 extend over the complete length of the wall like structure.
  • figure 8 more clearly shows the five holes 6' available at the end of the wall like structure. Identical groups of holes 6' are located in the middle and the opposite end of the wall like structure, as can be seen in figure 7.
  • the present invention was only described in further detail for explanatory purposes. However, the invention is not to be understood being limited to these embodiments as they repre sent embodiments providing additional benefits to solve spe cific problems or fulfilling specific needs. The scope of the protection should be understood to be only limited by the claims attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention concerne un produit soutenu fabriqué par fabrication additive, le produit soutenu engendrant une structure de soutien améliorée. La présente invention concerne également un produit nécessité par un tel produit soutenu. La présente invention concerne également un procédé pour produire un produit utilisant un tel produit soutenu. En outre, la présente invention concerne l'utilisation d'une telle structure de soutien améliorée pour améliorer la fabrication d'un tel produit. De plus, la présente invention concerne un produit programme informatique utilisé pour mettre en œuvre un tel procédé. La présente invention concerne également un dispositif pour fournir un tel produit programme informatique.
EP20771480.9A 2019-09-10 2020-09-03 Structure de soutien Pending EP3999266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19196484.0A EP3791976A1 (fr) 2019-09-10 2019-09-10 Structure de support
PCT/EP2020/074513 WO2021047981A1 (fr) 2019-09-10 2020-09-03 Structure de soutien

Publications (1)

Publication Number Publication Date
EP3999266A1 true EP3999266A1 (fr) 2022-05-25

Family

ID=67928607

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19196484.0A Withdrawn EP3791976A1 (fr) 2019-09-10 2019-09-10 Structure de support
EP20771480.9A Pending EP3999266A1 (fr) 2019-09-10 2020-09-03 Structure de soutien

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19196484.0A Withdrawn EP3791976A1 (fr) 2019-09-10 2019-09-10 Structure de support

Country Status (2)

Country Link
EP (2) EP3791976A1 (fr)
WO (1) WO2021047981A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113976916B (zh) * 2021-11-02 2024-03-15 深圳市华阳新材料科技有限公司 一种3d打印的支撑结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10219983B4 (de) * 2002-05-03 2004-03-18 Bego Medical Ag Verfahren zum Herstellen von Produkten durch Freiform-Lasersintern
US9429023B2 (en) * 2013-01-14 2016-08-30 Honeywell International Inc. Gas turbine engine components and methods for their manufacture using additive manufacturing techniques
FR3043347B1 (fr) * 2015-11-06 2021-06-25 Michelin & Cie Procede de fabrication additive a base de poudre d'une piece, notamment d'un element de garniture pour moule de pneumatique
FR3043577B1 (fr) * 2015-11-17 2022-06-17 Snecma Procede de fabrication d'une preforme d'aube, d'une aube et d'un secteur de distributeur par fusion selective sur lit de poudre
FR3046556B1 (fr) * 2016-01-07 2023-11-03 Snecma Procede de fabrication de piece par fabrication additive
GB2564832A (en) * 2017-02-28 2019-01-30 Siemens Ag Additive manufacturing
DE102017208520A1 (de) * 2017-05-19 2018-11-22 Premium Aerotec Gmbh Verfahren zur Herstellung eines Objekts mittels generativer Fertigung, Bauteil, insbesondere für ein Luft- oder Raumfahrzeug, und computerlesbares Medium

Also Published As

Publication number Publication date
EP3791976A1 (fr) 2021-03-17
WO2021047981A1 (fr) 2021-03-18

Similar Documents

Publication Publication Date Title
US9254537B2 (en) Plural layer putty-powder/slurry application method for superalloy component crack vacuum furnace healing
EP3131697B1 (fr) Brasure structurelle pour un matériel de superalliage
CN103415365B (zh) 用于局部修复损坏的热机械部件的方法以及因此生产的部件尤其是涡轮机部件
DE10117127B4 (de) Verbundaufbau zwischen metallischen und nichtmetallischen Materialien
EP3999266A1 (fr) Structure de soutien
JP2017141511A (ja) 積層造形法のための方法及び破断可能な支持体
US8987629B2 (en) Process of closing an opening in a component
CN106041084A (zh) 基于电子束选区熔化技术的三维点阵材料及其制备方法
CN202062079U (zh) 一种直接制造梯度材料零件的装置
CN109477580B (zh) 流量阻尼器及其制造方法
CN106964860B (zh) 在开口上进行焊接包覆的方法
EP2868427A3 (fr) Compositions d'alliage de brasage et procédés de brasage pour super-alliages
Yang et al. Microstructure and tensile properties of nickel-based superalloy K417G bonded using transient liquid-phase infiltration
KR20150051896A (ko) 초합금을 위한 브레이즈 합금 조성물 및 브레이징 방법
JP2017518184A (ja) 複数の結晶粒組織を有し、高応力環境で使用するための物品
CN114207251A (zh) 用于修复高温燃气涡轮叶片的系统和方法
Khazaei et al. TLP bonding of dissimilar FSX-414/IN738 system with MBF80 interlayer: Prediction of solid/liquid interface location
Horii et al. Freeform fabrication of superalloy objects by 3D micro welding
CN105722635A (zh) 焊接工艺及减少约束的焊接接头
US7060222B2 (en) Infiltration of a powder metal skeleton of similar materials using melting point depressant
CN103089323B (zh) 一种空心风扇叶片及其制造方法
EP3797905A1 (fr) Procédé de fabrication additive modulaire
DE102017106327B4 (de) Verfahren zum Herstellen isolierender dreidimensionaler (3D-)Strukturen unter Verwendung von 3D-Druck
Guo et al. Development of novel EBSM system for high-tech material additive manufacturing research
EP2969380B1 (fr) Procede de brassage d'un composant en superalliage rene 80

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220217

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)