WO2022029375A1 - Procede pour la realisation d'un fil de brasure et fil de brasure en resultant - Google Patents
Procede pour la realisation d'un fil de brasure et fil de brasure en resultant Download PDFInfo
- Publication number
- WO2022029375A1 WO2022029375A1 PCT/FR2021/051221 FR2021051221W WO2022029375A1 WO 2022029375 A1 WO2022029375 A1 WO 2022029375A1 FR 2021051221 W FR2021051221 W FR 2021051221W WO 2022029375 A1 WO2022029375 A1 WO 2022029375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire
- flux
- solder
- metal
- producing
- Prior art date
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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/045—Manufacture of wire or bars with particular section or properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
-
- 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, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
Definitions
- the invention belongs to the field of brazing, that is to say a technique now widely mastered, making it possible to assemble metallic elements together by implementing a filler metal, the melting temperature of which is lower than the melting temperature of said metallic elements to be assembled.
- solders are in the form of wires, rods or even rings, whether or not incorporating a flux.
- the temperature of the solder is higher than the melting point of the metal or the alloy which constitutes it (typically based on aluminum or an aluminum silicon alloy, or even based on silver), the metal or the The metal alloy melts, and spreads by capillarity at the level of the surfaces to be assembled until a joint is formed.
- solder flux also called flux flux
- flux flux is applied to the surfaces to be joined by soldering, the function of which is, firstly, to remove the oxide layers conventionally present at the level of the metal surfaces to be joined, but also to promote the displacement of the metal or of the molten metal alloy constituting the solder, and finally, to avoid the subsequent formation of oxide at the level of the metallic surfaces joined together.
- this stripping flux is made from complexes of potassium fluoro aluminate, Cesium, potassium fluoborate or any chemical substance intended to reduce surface tensions.
- solders with stripper that is to say integrating a flux of solder
- a first step consists in making a wire primary, metallic or alloy metal, which is then drawn to conform to the desired diameter.
- This primary wire is then filled with a flow of solder in powder or paste, in order to constitute the solder itself.
- the metal wire or wire based on a metal alloy intended to be brought to a temperature above its melting temperature to ensure the subsequent joint is in particular known that consisting in using a ribbon, which is deformed to give it a U-shape, inside which the flux in powder or paste is deposited.
- the upper branches of the U are then tightened, so that they overlap one on the other or that they join one to the other at the level of their free ends, so as to obtain a cored wire , shaped to the desired diameter by drawing passes.
- document US 2012/006881 describes such a process.
- the present invention aims, in the first place, to manufacture a cored wire having a length of usable wire which is clearly greater than the existing wires on the market, and all this in a single operation. It also makes it possible to better control the percentage of pickling flux in the cored solder resulting from this new process. It requires a raw material that is less processed and more abundant on the market. Secondly, it aims to generate a cored solder wire, the thickness of the metal or metal alloy wall of which is almost constant in order to achieve an isotropic displacement of said metal or said metal alloy after melting and, as a corollary , to optimize the quality of the solder itself.
- the invention proposes such a method for producing a solder wire which consists of:
- the invention consists, in the first place, in using as the base material solder wire, a metal wire or a solid metal alloy wire, directly obtained from the manufacturing units of such wires, and therefore a reduced cost price.
- This solid wire undergoes a stamping operation in order to then define a U-shaped cross-section wire, said U being made over the entire diameter of said wire.
- the invention therefore dispenses with a rolling step, or the production of a calibrated tape, and in general any prior operation of conforming a raw yarn from a die. It is specified that the stamping operation can be carried out at ambient temperature, or at a controlled (higher) temperature, depending on the nature of the alloy constituting the wire.
- the method implements, between the step of unwinding the solid wire and the die-stamping step, a step of straightening said wire, it being in fact remembered that the raw wire serving as material for basis for the realization of the solder wire is stored on reels or spools.
- the purpose of this straightening step is to then have a perfectly straight wire, capable of favoring the subsequent die-forging step on the one hand, and above all filling with solder flux or flux on the other.
- the die-stamping of the metal or metal-alloy-based wire is carried out in such a way as to define a differentiated deformation of said wire between the center or middle of the wire and the end of the branches of the U, in the objective of being able to have, during the step of closing the branches of the U one on the other, a constant or substantially constant thickness of the metal or metal alloy wall of the solder-cored wire.
- the wire undergoes, by means of a die, a preliminary shaping operation before its filling, intended to adjust the dimensions as correctly as possible. of the U depending on the diameter of the cored wire that one wishes to obtain.
- the filling of the U-shaped wire with stripper flux can be carried out by passing said wire through a flux reservoir then stored in powder or paste, subjected or not to vibration, then leveling at the end of the U or slightly in -below the upper end of the U.
- the filling of the U-shaped wire is controlled by means of a camera or any equivalent means measuring the effective height of the flux in the U-shaped metal cavity.
- the invention also relates to the solder wire obtained by this process.
- This brazing wire is filled by means of a brazing flux or a pickling flux, the thickness of the wall of metal or a metal alloy of said wire being constant or substantially constant.
- Figure 1 is a schematic representation of an installation implementing the method according to the invention.
- Figure 2 is a schematic representation illustrating the evolution of the cross section of the metal or metal alloy wire during the process of the invention.
- Figure 3 is a schematic representation in perspective of the solid wire die-stamping operation, with a view to forming it into a U shape.
- FIG. 1 represents a schematic illustration of the various stages of the method of the invention.
- the solder wire of the invention comprises as base material a solid metal wire (2), that is to say of circular cross-section, as illustrated in FIG. 2 A.
- This wire is typically produced on the basis of silver, copper, zinc, aluminum or an alloy of these metals. It is stored in the form of a reel (1), said reel being mounted on a reel. Said wire (2) then undergoes a straightening operation, by passing through a succession of rollers (3) with a flat peripheral surface, in order to end up with a perfectly straight wire.
- the wire still full at this stage, undergoes a stamping operation between rotating rollers (4, 5).
- the periphery of these rollers has, respectively, a hollow or matrix (18), for receiving the solid wire and therefore of a size adapted to the initial diameter of said wire (2), in order to prevent said wire from moving during the stamping operation, and a punch (17), that is to say a projection, of dimension suitable, positioned facing each other with respect to the matrix, so as to generate a deformation of the wire (2), and in particular to generate a U-shaped cross section over substantially the entire diameter of the wire, as shown in FIG. 2B (initiation of the start of deformation (12)) and FIG. 2C (end of deformation: U-shaped section).
- this stamping generates not only the deformation of the U-shaped wire, defining a volume (13) intended, during a subsequent step, to be filled with a flow stripper (16), but also a thinning of the upper ends (14, 15) of the U, the purpose of which will be described later.
- the wire once the wire has been shaped into a U, it passes through a calibration die, specially machined in order to perfectly adjust the dimensions of the U according to the diameter of the final cored solder wire (19) that is desired. get.
- the U-shaped wire is then filled with an flux flux of solder powder or paste.
- this stripper flux consists of a chemical substance capable of reducing surface tensions, and for example produced on the basis of complexes of potassium fluoro aluminate, Cesium, potassium fluoborate, without this statement having any character limiting.
- the filling of the U-shaped wire can be carried out in different ways, and for example by passing the wire into a tank (6) filled with the powder or paste flux, from a storage tank (7).
- the tank (6) is vibrated or not by any appropriate means according to a frequency and an amplitude which depends on the alloy used and the type of flux, in order to optimize the filling of the volume (13) with flux.
- said reservoir (6) may or may not be connected to a vibration generator, the frequency and amplitude of which are chosen according to the metal alloy/flux pair, with the aim of optimizing the filling of the volume (13).
- a shaving system makes it possible to adjust the quantity of flow according to the specifications.
- This system can consist of a scraper, i.e. a rectilinear blade adjustable in height, or a tamping wheel.
- the installation implementing the method of the invention has a means for monitoring the filling of said volume (13) consisting of a camera or equivalent, which measures the height, and therefore as a corollary the quantity of stripping flux in volume (13).
- This means of control makes it possible to ensure that the level of flux is well within the tolerances. Otherwise, the installation is automatically stopped and the operator warned. In the latter case, the operator visually observes the defect, and then corrects the quantity of flow manually. Then he restarts production.
- the filled metal or metal alloy wire (19) is then obtained as illustrated in FIG. 2D.
- the wire thus filled then undergoes a closing step, obtained by bringing together the free ends of the branches (14, 15) of the U and closing said branches one on the other (FIG. 2E) by means of two rollers (9, 10 ) of appropriate shape allowing the ends to be out of phase, that is to say, the offset of one lip or free end of the branches with respect to the other lip (the free end of the second branch), in order to allow overlapping one over the other.
- the wire obtained (19) is then drawn and then coiled (11) for the purposes of storage and delivery.
- the free ends (14, 15) of the branches of the U are thinned, in order to allow, when one of said ends is folded over the other, to have a substantially constant thickness of the outer brazing wire, and as a corollary, to lead to a substantially isotropic spreading of the metal or of the metal alloy which constitutes it during its fusion, and therefore to the formation of a joint more effective between the two metal parts to be assembled.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21749239.6A EP4192634A1 (fr) | 2020-08-07 | 2021-07-05 | Procede pour la realisation d'un fil de brasure et fil de brasure en resultant |
MX2023001463A MX2023001463A (es) | 2020-08-07 | 2021-07-05 | Metodo para producir un alambre para cobresoldar y alambre para cobresoldar resultante. |
US18/018,058 US20230256548A1 (en) | 2020-08-07 | 2021-07-05 | Method for producing a brazing wire and resulting brazing wire |
BR112023001564A BR112023001564A2 (pt) | 2020-08-07 | 2021-07-05 | Método para a conformação de um fio de brasagem, e, fio de brasagem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2008354A FR3113257B1 (fr) | 2020-08-07 | 2020-08-07 | Procede pour la realisation d’un fil de brasure et fil de brasure en resultant |
FRFR2008354 | 2020-08-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022029375A1 true WO2022029375A1 (fr) | 2022-02-10 |
Family
ID=74045571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2021/051221 WO2022029375A1 (fr) | 2020-08-07 | 2021-07-05 | Procede pour la realisation d'un fil de brasure et fil de brasure en resultant |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230256548A1 (fr) |
EP (1) | EP4192634A1 (fr) |
BR (1) | BR112023001564A2 (fr) |
FR (1) | FR3113257B1 (fr) |
MX (1) | MX2023001463A (fr) |
WO (1) | WO2022029375A1 (fr) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048705A (en) * | 1974-05-22 | 1977-09-20 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Method of making soldering wire constituted by a core of powder and a metallic tube enclosing the core |
US4203188A (en) * | 1974-05-22 | 1980-05-20 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Method of producing welding wire constituted by a core of welding powder enclosed by a mantle of metal |
US20020040572A1 (en) * | 1999-10-21 | 2002-04-11 | Manea Adrian | Method and apparatus for forming a wire |
FR2859122A1 (fr) * | 2003-08-28 | 2005-03-04 | Kobe Steel Ltd | Procede de fabrication d'un fil de soudage fourre soude |
EP1663543A1 (fr) * | 2003-08-29 | 2006-06-07 | Peter Andrew Gray | Processus de fabrication de barre creuse |
US20120006881A1 (en) | 2010-07-12 | 2012-01-12 | Fuerstenau Charles E | Flux Cored Preforms for Brazing |
FR2974528A1 (fr) * | 2011-04-26 | 2012-11-02 | Air Liquide Welding France | Procede et installation de fabrication de fil fourre par soudage laser avec recuit post soudage |
EP2735398A1 (fr) * | 2012-11-21 | 2014-05-28 | FRO - Air Liquide Welding Italia S.P.A. | Fil fourré de soudage ou de placage |
EP2905105A1 (fr) * | 2012-10-02 | 2015-08-12 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Fil fourré |
WO2019057335A2 (fr) * | 2018-11-15 | 2019-03-28 | Theodor Stuth | Procédé de fabrication d'un fil brut à partir d'une première bande métallique et d'au moins une autre bande métallique par profilage sur galets |
-
2020
- 2020-08-07 FR FR2008354A patent/FR3113257B1/fr active Active
-
2021
- 2021-07-05 EP EP21749239.6A patent/EP4192634A1/fr active Pending
- 2021-07-05 BR BR112023001564A patent/BR112023001564A2/pt unknown
- 2021-07-05 WO PCT/FR2021/051221 patent/WO2022029375A1/fr unknown
- 2021-07-05 MX MX2023001463A patent/MX2023001463A/es unknown
- 2021-07-05 US US18/018,058 patent/US20230256548A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048705A (en) * | 1974-05-22 | 1977-09-20 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Method of making soldering wire constituted by a core of powder and a metallic tube enclosing the core |
US4203188A (en) * | 1974-05-22 | 1980-05-20 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Method of producing welding wire constituted by a core of welding powder enclosed by a mantle of metal |
US20020040572A1 (en) * | 1999-10-21 | 2002-04-11 | Manea Adrian | Method and apparatus for forming a wire |
FR2859122A1 (fr) * | 2003-08-28 | 2005-03-04 | Kobe Steel Ltd | Procede de fabrication d'un fil de soudage fourre soude |
EP1663543A1 (fr) * | 2003-08-29 | 2006-06-07 | Peter Andrew Gray | Processus de fabrication de barre creuse |
US20120006881A1 (en) | 2010-07-12 | 2012-01-12 | Fuerstenau Charles E | Flux Cored Preforms for Brazing |
FR2974528A1 (fr) * | 2011-04-26 | 2012-11-02 | Air Liquide Welding France | Procede et installation de fabrication de fil fourre par soudage laser avec recuit post soudage |
EP2905105A1 (fr) * | 2012-10-02 | 2015-08-12 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Fil fourré |
EP2735398A1 (fr) * | 2012-11-21 | 2014-05-28 | FRO - Air Liquide Welding Italia S.P.A. | Fil fourré de soudage ou de placage |
WO2019057335A2 (fr) * | 2018-11-15 | 2019-03-28 | Theodor Stuth | Procédé de fabrication d'un fil brut à partir d'une première bande métallique et d'au moins une autre bande métallique par profilage sur galets |
Also Published As
Publication number | Publication date |
---|---|
EP4192634A1 (fr) | 2023-06-14 |
FR3113257A1 (fr) | 2022-02-11 |
US20230256548A1 (en) | 2023-08-17 |
FR3113257B1 (fr) | 2022-09-02 |
MX2023001463A (es) | 2023-03-03 |
BR112023001564A2 (pt) | 2023-02-23 |
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