EP3793766A1 - VERFAHREN ZUR HERSTELLUNG EINES SCHWEIßDRAHTES, SCHWEIßDRAHT ZUR BEARBEITUNG EINES BAUTEILS UND BAUTEIL - Google Patents
VERFAHREN ZUR HERSTELLUNG EINES SCHWEIßDRAHTES, SCHWEIßDRAHT ZUR BEARBEITUNG EINES BAUTEILS UND BAUTEILInfo
- Publication number
- EP3793766A1 EP3793766A1 EP19728859.0A EP19728859A EP3793766A1 EP 3793766 A1 EP3793766 A1 EP 3793766A1 EP 19728859 A EP19728859 A EP 19728859A EP 3793766 A1 EP3793766 A1 EP 3793766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- wire
- component
- cavity
- welding wire
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes or wires
- B23K35/0266—Rods, electrodes or wires flux-cored
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
- B23K35/286—Al as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
- B23K35/3033—Ni as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings or fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings or fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3608—Titania or titanates
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings or fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings or fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/361—Alumina or aluminates
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
- B23K2035/408—Filled tubular wire or rods with welded longitudinal seam
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/14—Titanium or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
Definitions
- the invention relates to a method for producing a welding wire. Further aspects of the invention relate to a welding wire for machining a component and a component.
- EP 0 227 634 A1 discloses a method for producing a filler metal in the form of a welding wire.
- a wrapping wound on a reel is filled with a metal powder, whereupon the casing filled with the metal powder is reduced by pulling in cross section, whereby air present in the interior of the casing can escape.
- the metal powder may be formed, for example, from alloys such as nickel or cobalt base alloys.
- the tube can be constructed, for example, of iron, cobalt and / or nickel.
- US 2007/0193228 A1 describes a method for producing a welded metal tube which contains filling elements.
- a long narrow metal sheet with two longitudinal edges is provided and at least a part of the metal sheet is produced in the form of a channel by bringing one of the longitudinal edges close to the other longitudinal edge.
- the Golfelemen te are then introduced into the channel and the metal sheet is then prepared in the form of a tube by the two longitudinal edges are brought closer to each other until the longitudinal edges are in contact.
- a method for producing a metal core welding wire is known.
- a seamless tube made of aluminum or an aluminum alloy is formed and this tube filled with a powder containing a metal or a metal alloy.
- the powder of the metal or metal alloy is made of a homogeneous, molten metal or a metal alloy, which is ground after solidification to a predetermined grain size.
- the tube filled with the powder is drawn to a predetermined diameter, wherein the pulling compresses the powder so that gas filled with the powder is completely removed from the tube.
- the object of the present invention is to provide a method for producing a welding wire, which enables the production of particularly strong welded joints by means of build-up welding on a component.
- Another object of the invention is to provide a corresponding welding wire and a corresponding component.
- a first aspect of the invention relates to a method for producing a welding wire, comprising at least the steps:
- the hollow wire is formed of nickel.
- the advantage here is that by the vacuuming or filling of the cavity with inert gas, the occurrence of any, weld weakening oxidation processes of the welding material when using the welding wire for welding largely prevented or at least greatly reduced.
- the protective gas or vacuum thus protects the welding material liquefied during welding in other words against oxidation.
- Particularly suitable shielding gases include, for example, argon (Ar) or helium (He).
- Ar argon
- He helium
- Metallic welding wires of particularly strong materials such as titanium aluminide or the at least one Nickel-base superalloy, whose production by wire drawing or by other forming process difficult or even impossible.
- Such hard-to-form materials such as titanium aluminide or the at least one nickel-base superalloy can also have low melt weldability, that is not applied or only with great effort by fusion welding during processing of a component and thereby processed.
- Nickel, especially pure nickel has good melt weldability and is therefore suitable for fusion welding.
- the weld material includes the at least one nickel-base superalloy and the hollow wire is nickel, especially pure nickel, the weld wire may be used despite the low melt weldability of the at least one nickel-based superalloy for fusion welding, for example, on-job welding.
- the hollow wire can be formed, for example, from titanium, in particular pure titanium, or from aluminum, in particular pure aluminum. Titanium and aluminum also have good melt weldability, so are melt-weldable.
- the invention is based on the finding that nickel or titanium or aluminum has a positive influence on process stability in fusion welding, in particular if the hollow wire is formed from nickel or titanium or aluminum, ie the nickel or titanium or aluminum not powdery, but wire (as the hollow wire) are provided.
- the improved process stability leads, for example, to a lower porosity of a weld formed from the welding wire.
- coaxial wire feed of the welding wire for example, during build-up welding (wire-overlay welding), has particularly few restrictions on the construction of 3D contours during machining of the component.
- the inert gas may before, during and additionally or alternatively after the filling of the
- Welding material are introduced into the cavity.
- the introduction of the welding material can be carried out, for example, in a protective gas chamber (glove box) or in a vacuum chamber (with a suitable lock system).
- the filling with protective gas, or the vacuuming prior to filling the welding material is advantageous, since an existing in the cavity oxygen amount is already reduced at the beginning of filling, so that any inclusion of oxygen-containing gas pores in the hollow in the hollow Space filled welding material can be particularly effectively prevented from the beginning.
- Filling with protective gas, or vacuuming during filling of the welding material is advantageous, as it allows any oxygen contained in the welding material to be filled in to be at least partially displaced from the cavity during filling.
- the filling with inert gas, or the vacuuming after filling the welding material is advantageous, since this way a residual oxygen amount can be removed from the cavity.
- the amount of oxygen in the cavity can be kept particularly low overall.
- the welding wire may be generally used for and used with a high energy beam welding method such as a laser welding method or an electron beam welding method.
- a high energy beam welding method such as a laser welding method or an electron beam welding method.
- the welding wire can also be used for further possible welding methods, for example inert gas welding methods or plasma welding methods.
- the closure of the cavity takes place by at least one, the cavity communicating with the environment opening of the welding wire is closed at least one welding wire end of the welding wire.
- the environment can be protected and the welding wire is ready for use particularly quickly, especially since unpacking the welding wire from a packaging (for example, the vacuum film) is unnecessary. If necessary, the welding wire can be subsequently cleaned, whereby external contamination can be eliminated.
- a packaging for example, the vacuum film
- the opening may be a passage opening, which may extend as the hollow space through the hollow wire or welding wire. If the opening is formed as a passage opening, opposite welding wire ends of the welding wire can be closed in order to prevent penetration of oxygen or moisture at opposite welding wire ends.
- the at least one end of the welding wire may preferably be under vacuum or under protective gas when closing the opening.
- the opening can generally be closed by a thermal joining method, for example a welding method, whereby a particularly gas-tight closure of the cavity is made possible.
- a spot weld may be placed at the weld wire end to close the opening.
- the hollow wire is provided by a sheet metal element is bent to form the cavity, wherein respective sheet metal element edges of the sheet metal element are arranged adjacent to each other and then connected together.
- a sheet metal element is bent to form the cavity, wherein respective sheet metal element edges of the sheet metal element are arranged adjacent to each other and then connected together.
- the sheet metal element edges are connected to each other by a thermal joining process, in particular welding process.
- a thermal joining process in particular welding process.
- the thermal joining method may be, for example, a high energy beam welding method such as a laser beam welding method.
- the sheet metal element is acted upon at least during the thermal joining process by a vacuum atmosphere or by a protective gas atmosphere. This is advantageous since in this way a particularly high connection quality with a low oxygen content can be achieved at a connection region of the sheet-metal element edges.
- sheet metal element edges can be carried out, for example, in a protective gas chamber or a vacuum chamber.
- the sheet metal element is formed by forming a hollow cylindrical cross-section to the hollow wire.
- the sheet metal element is reshaped in such a way that the hollow wire forms the hollow cylinder Cross section has. This is advantageous because, in contrast to a polygonal cross-section, a particularly low-compression rolling of the welding wire produced from the sheet metal element can take place due to the hollow cylindrical cross section.
- the welding material is in its powdered state when it is filled into the cavity. This is advantageous because this can be done with a particularly low-cost filling of the welding material.
- the welding material can be present, for example, as a TiAl powder (titanium aluminide powder).
- the hollow wire made of titanium or aluminum is formed when the welding material includes titanium aluminide.
- titanium or aluminum can be used as a material for the hollow wire when the welding material includes titanium aluminide.
- the hollow wire can accordingly be formed completely and therefore exclusively from titanium or aluminum. This is advantageous since titanium and aluminum have a low weight and high strength at the same time.
- the welding material is formed from titanium aluminide or from the at least one nickel-base superalloy.
- titanium aluminide or only the at least one nickel-base superalloy can be used exclusively as the welding material.
- Titanium aluminide and the at least one nickel-base superalloy are distinguished by their particularly low weight and high strength.
- the welding material comprises Nb and / or Mo, if the welding material includes titanium aluminide.
- a powder mixture of Ti and Al as well as Nb (niobium) and additionally or alternatively Mo (molybdenum) can be advantageously used as the welding material, which can be produced with little effort and cost.
- so-called TiAl-TNM can be used as the welding material.
- an expensive production of pure TiAl powder can be dispensed with and an evaporation of the light aluminum (during the production of the welding wire and in the case of any thermal joining process) can be easily compensated. by a higher proportion of Al powder is used for the production of the welding wire from the one hand.
- a second aspect of the invention relates to a welding wire for machining a component, in particular for a turbomachine, by means of build-up welding, wherein the welding wire is obtained by a method according to the first aspect of the invention.
- the machining of the component may, for example, be a component production of the component and / or a component repair of the component.
- a third aspect of the invention relates to a component, in particular for a turbomachine, comprising at least one component region, which is obtained by build-up welding using at least one welding wire according to the second aspect of the invention.
- the component area contains at least parts of the welding wire, ie parts of the hollow wire and of the welding material.
- the component may, for example, be a component of a turbomachine formed at least partially or completely from titanium aluminide.
- the component can be, for example, a guide ring, a housing part in a compressor or a turbine, an outlet guide wheel, a stator segment or a sealing ring, to name just a few examples.
- the welding wire for machining the component By using the welding wire for machining the component, at least the component region formed, for example, as a welded seam or spot weld, with a particularly high welding region quality can be formed on the component.
- the component area has a particularly low content of oxidation components.
- At least one region of the component that is different from the component region is formed entirely from titanium aluminide or completely from the at least one nickel-base superalloy. This gives the component a particularly high strength and at the same time very low weight.
- the region other than the component region can be an area adjoining the component region and can be materially bonded to the component region by build-up welding using the welding wire.
- Fig. 1 is a sectional view of a portion of a welding wire
- Fig. 2 is a side view of the portion of the welding wire
- FIG 3 shows a schematic perspective view of a component of a turbomachine, wherein a component region of the component is formed by build-up welding using the welding wire and regions of the component that are different from the component region are formed completely from titanium aluminide.
- FIG. 1 and FIG. 2 each show method steps for producing a welding wire 10, which is shown only in sections in FIGS. 1 and 2.
- the hollow wire 12 is provided by bending a sheet metal element 26 formed as a titanium sheet or nickel sheet, ie formed from pure titanium or pure nickel, to form the hollow space 14 until the sheet metal element 26 forms a hollow cylindrical cross section 32 is formed into the hollow wire 12, as shown in Fig. 1.
- Respective sheet metal element edges 28, 30 of the sheet metal element 26 are arranged adjacent to one another (see FIG. 1) and then connected to one another by a thermal joining process in the form of a welding process to form a weld seam 36.
- the hollow wire 12 is thus complete in summary and thus formed exclusively of titanium or alternatively exclusively of nickel.
- the sheet metal element 26 is acted upon by a protective gas atmosphere during the thermal joining process.
- the sheet metal element 26 is located in a chamber 20, which in the present example is filled with argon and / or helium as protective gas 18 and through which the protective gas atmosphere is created.
- the chamber 20 can also be vacuumed so that a vacuum atmosphere can be created in the chamber 20.
- the welding wire 10 is produced by filling in a welding material comprising a mixture of Ti, Al, Nb and Mo or alternatively formed entirely of titanium aluminide or, when the hollow wire 12 is made of pure nickel, alternatively of at least one nickel-base superalloy 16 via a presently designed as a passage opening opening 22 into the cavity 14, wherein the cavity 14 before, during and after the filling of the welding material with the protective gas 18 is filled.
- the welding material 16 is present when it is filled into the cavity 14 in a powdered state. In other words, when it is filled in, the welding material 16 is present in the cavity 14 as a TiAl powder or as a nickel-base superalloy powder.
- Both the inert gas atmosphere filling the cavity 14 with the protective gas 18 and the vacuum atmosphere cause an oxygen content within the cavity 14 to be kept at a reduced level before, during and after the filling in, compared to the ambient air. This can cause unwanted oxidation processes in a late- Use of the welding wire 10 for a build-up welding are at least largely suppressed.
- a closure of the cavity 14 whereby a fluid flow between the cavity 14 and an environment of the welding wire 10 is prevented.
- the inert gas atmosphere can be released and thus an exposure to the protective gas 18 can be terminated.
- the closing of the cavity 14 is carried out by respective, the cavity 14 connecting to the environment, each other at respective welding wire ends of the welding wire 10 openings are closed, in Fig. 2 by way of example only one of the openings, namely an opening 22 of the welding wire 10 at a the Sch Strukturdrahten-, namely at a welding wire end 24 of the welding wire 10 is shown.
- the opening 22 is closed at the, for example, folded welding wire end 24 by a spot weld 34.
- the welding wire 10 produced by the method described can be used for machining a component 50, for example a turbomachine, by means of build-up welding.
- the machining may be a manufacture or a repair of the component 50.
- FIG. 3 shows the component 50 for the turbomachine not shown here.
- the component 50 is designed in the present variant as a blade.
- the component 50 comprises a component region 52 in the form of a weld, which is obtained by build-up welding using the welding wire 10.
- Respective regions 54, 56 of the component 50 which are different from the component region 52 are formed here from the titanium aluminide Ti-48Al-2Cr-2Nb.
- the regions 54, 56 each represent partial segments (here: blade segments) of the component 50, which are connected to one another in a material-locking manner via the component region 52 by build-up welding using the welding wire 10.
- the region 56 can be connected to the region 54 as part of a repair through the weld seam (component region 52).
- the regions 54, 56 may be expedient to apply the regions 54, 56 at least to a common connection zone which the connection of the regions 54, 56 should take place via the component region 52, for example to preheat to a temperature of 750-800 ° C.
- the welding wire 10 which can also be referred to as flux-cored wire, offers the advantage that a chemical composition of the welding material 16 (here: TiAl powder) can be selected such that the component region 52 formed by build-up welding meets a nominal value of a corresponding chemical composition the respective regions 54, 56, which are likewise formed of TiAl, may correspond.
- a wall thickness of the hollow wire 12 and thus a proportion of pure titanium on the component region 52 (here: weld seam of the component 50) can be taken into account.
- a melt formed from the hollow wire 12 and the welding material 16 may also correspond to the composition of the respective regions 54, 56, so that the melt may accordingly have the composition Ti-48Al-2Cr-2Nb. This results in the connection of the regions 54, 56 with the component region 52 a particularly homogeneous and loadable material structure.
- the welding wire 10 flux-cored wire
- any moisture absorption exit of moisture into the cavity 14
- contamination of the welding material 16 or the component region 52 can be effectively prevented.
- the method described enables a reproducible production of the welding wire 10, whereby reproducible welding properties can be achieved with high welding quality.
- the described method makes it possible to provide particularly brittle titanium aluminide (TiAl) in the cavity 14 of the welding wire 10 as a welding filler.
- the welding wire 10 can also be used generally for the generative production of the component 50, in other words for the layered construction of the component 50, which is not shown here, however. Furthermore, the production of hybrid TiAl components by build-up welding using the welding wire 10 is possible.
- the invention is based on the general knowledge that welding wires formed from titanium aluminide or from the at least one nickel-base superalloy do not form part of a conventional tional drawing process can be produced, especially since titanium aluminide or nickel-based superalloys are too brittle for such drawing processes.
- Another advantage is that the welding wire 10 before the welding process
- the preheated weld wire 10 welding process may also be referred to as hot wire welding.
- a power of a welding power source used for the welding process can be reduced.
- the hot-wire welding can be carried out under particularly low heat input into the component 50 and does not lead, or only to a slight extent, to a thermal distortion of the component 50.
- the present method describes the manufacture of the welding wire 10 which can be used as filler wire in build-up welding (wire-hard welding), wherein the hollow wire 12 can form a cylindrical shell of pure titanium or pure nickel with a predetermined wall thickness w (see Fig. 1) and wherein the welding material 16 may be formed from pure, powdered TiAl (TiAl powder) or from the at least one, pure, powdery nickel-base superalloy.
- TiAl powder powdered TiAl
- the powdered TiAl or the at least one powdered nickel-base superalloy can also be referred to as powder or powder mixture in a simplified manner below.
- the welding material 16 can be present, for example, as a powder mixture whose chemical composition is calculated on the assumption that the wall thickness w of the hollow wire 12, which is also referred to below as the sheath, is made of pure titanium or pure nickel be as exemplified below.
- Respective weight proportions of the welding wire 10 may be identical to the weight proportions of the welding material 16, hereinafter also referred to as the base material G.
- Respective dimensions of the hollow wire 12 in FIG. 1 are defined as follows: d: diameter of the hollow wire 12 (see FIG. 1) w: wall thickness of the hollow wire 12 (see Fig. 1)
- the chemical composition of the powdery welding material 16 can be calculated under the above assumption (shell of pure titanium or pure aluminum or of pure nickel) with the aid of FIG. 1, wherein the welding material 16 (base material) are also referred to below as material G. can:
- the filler wire has a total of the weight fractions g of the material G (welding material 16, titanium aluminide or nickel-based superalloy). This results in n linear equations (7) and (8), with which the nominal weight proportions g 'of all n elements of the welding wire 10 can be easily calculated.
- the chemical composition of the welding material 16, which corresponds to a filling of the welding wire 10, can be adjusted such that the additively structured component region 52 has a chemical composition which corresponds to the chemical composition of the titanium aluminide or the weld metal chemical composition of the at least one nickel-base superalloy.
- process-related evaporation of aluminum components in the welding process can be taken into account and kept in advance.
- the hollow wire 12 can be filled as required with titanium aluminide or with the at least one nickel-base superalloy, for example in the form of one or more nickel-based cast materials.
- the hollow wire 12 (outer sheath of the welding wire 10) is formed of pure nickel, while the welding material 16 (filling) is adjusted so that the entire welding wire 10 of the composition of the nickel-base superalloy (or nickel-base casting alloy) equivalent.
- the evaporation of light alloying elements can also be compensated for here by the weight fraction of these light alloying elements in the welding wire 10 is increased from the outset, as already described in the process-related evaporation of the above-mentioned aluminum content.
- the abovementioned nickel-base cast materials can be used in particular as blade materials in the field of an aircraft engine turbine and stationary gas turbines.
- Typical representatives of the nickel-base cast materials are polycrystalline materials, such as For example, ENCONEL 100, INCONEL 713 or MAR-M 247 and monocrystalline materials, such as Rene N5, PW1484 or LEK94 dar.
- These polycrystalline or einkristalli- nen materials are particularly suitable as welding material 16 of the welding wire 10th
- the component 50 and, additionally or alternatively, the welding wire 10 can be locally heated to a temperature of, for example, more than 1000 ° C.
- a temperature of, for example, more than 1000 ° C Such local heating of the welding wire 10 almost to its melting temperature may also be referred to as hot wire welding (hot wire deposition welding).
- hot wire welding hot wire deposition welding
- the possibility of such preheating to avoid cracking represents a particular advantage of the welding wire 10 over a purely powdered welding filler.
- the welding of the welding material 16 can be carried out under the protective gas atmosphere (atmosphere formed by the protective gas 18).
- the weld wire ends can be closed by the respective weld point 34.
- the welding wire 10 filled with the nickel-base superalloy as the welding material 16 is particularly suitable for repairing damaged components, as explained with reference to the component 50. Independently of this, the welding method using the welding wire 10 can also be used for the production of welded constructions.
- the welding wire 10 can also be used as an additional material for the connection welding of identical or hybrid welded structures. List of reference numbers:
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018207448.8A DE102018207448A1 (de) | 2018-05-15 | 2018-05-15 | Verfahren zur Herstellung eines Schweißdrahtes, Schweißdraht zur Bearbeitung eines Bauteils und Bauteil |
| PCT/DE2019/000127 WO2019219104A1 (de) | 2018-05-15 | 2019-05-09 | VERFAHREN ZUR HERSTELLUNG EINES SCHWEIßDRAHTES, SCHWEIßDRAHT ZUR BEARBEITUNG EINES BAUTEILS UND BAUTEIL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3793766A1 true EP3793766A1 (de) | 2021-03-24 |
Family
ID=66776061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19728859.0A Withdrawn EP3793766A1 (de) | 2018-05-15 | 2019-05-09 | VERFAHREN ZUR HERSTELLUNG EINES SCHWEIßDRAHTES, SCHWEIßDRAHT ZUR BEARBEITUNG EINES BAUTEILS UND BAUTEIL |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20210346993A1 (de) |
| EP (1) | EP3793766A1 (de) |
| DE (1) | DE102018207448A1 (de) |
| WO (1) | WO2019219104A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113927212B (zh) * | 2021-11-12 | 2022-08-30 | 南京航空航天大学 | 一种面向电弧增材修复的焊丝结构设计的方法 |
| CN114147385B (zh) * | 2021-11-26 | 2023-03-14 | 西安理工大学 | 铜-钢复合板cmt熔焊对接用焊丝及制备与焊接方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE453058B (sv) * | 1984-10-29 | 1988-01-11 | Werner Adolf Holmgren | Forfarande for kontinuerlig tillverkning av en pulverfylld rorsvetselektrod |
| DE3542663A1 (de) * | 1985-12-03 | 1987-06-04 | Boehler Ag | Schweisszusatzwerkstoff und verfahren zur herstellung desselben |
| US5525779A (en) * | 1993-06-03 | 1996-06-11 | Martin Marietta Energy Systems, Inc. | Intermetallic alloy welding wires and method for fabricating the same |
| US5453243A (en) * | 1994-08-17 | 1995-09-26 | The United States Of America As Represented By The Secretary Of The Interior | Method for producing titanium aluminide weld rod |
| DK0847831T3 (da) * | 1998-02-09 | 2000-01-03 | Soudure Autogene Francaise | Fremgangsmåde til fremstilling af fyldte tætte tråde til lysbuesvejsning |
| US6596963B2 (en) * | 2001-08-31 | 2003-07-22 | General Electric Company | Production and use of welding filler metal |
| US20060018780A1 (en) * | 2004-07-23 | 2006-01-26 | Pcc Advanced Forming Technology | Method and composition for making a wire |
| FR2897549B1 (fr) * | 2006-02-20 | 2009-02-06 | Air Liquide | Procede de fabrication de tubes remplis de poudres, tels des fils fourres de soudage |
| DE102011007898B4 (de) * | 2011-04-21 | 2016-07-21 | Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. | Verfahren zur Herstellung von Halbzeugen auf der Basis von intermetallischen Verbindungen |
| JP5968855B2 (ja) * | 2013-10-31 | 2016-08-10 | 株式会社神戸製鋼所 | Ni基合金フラックス入りワイヤ |
| EP2913141B1 (de) * | 2014-02-28 | 2019-11-06 | Illinois Tool Works Inc. | Schweißdraht mit Metallkern und Verfahren zur Herstellung davon |
| CN103962746B (zh) * | 2014-05-08 | 2016-06-08 | 广东省工业技术研究院(广州有色金属研究院) | 一种电弧焊用气体保护药芯焊丝 |
| EP3147067A1 (de) * | 2015-09-25 | 2017-03-29 | MTU Aero Engines GmbH | Vorrichtung und verfahren zur herstellung und/oder reparatur von, insbesondere rotationssymmetrischen, bauteilen |
-
2018
- 2018-05-15 DE DE102018207448.8A patent/DE102018207448A1/de not_active Withdrawn
-
2019
- 2019-05-09 EP EP19728859.0A patent/EP3793766A1/de not_active Withdrawn
- 2019-05-09 US US17/054,962 patent/US20210346993A1/en not_active Abandoned
- 2019-05-09 WO PCT/DE2019/000127 patent/WO2019219104A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019219104A1 (de) | 2019-11-21 |
| US20210346993A1 (en) | 2021-11-11 |
| DE102018207448A1 (de) | 2019-11-21 |
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