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EP3590617B1 - Procédé de fabrication d'un profilé porteur à partir d'une tôle et profilé porteur fabriqué selon ledit procédé - Google Patents

Procédé de fabrication d'un profilé porteur à partir d'une tôle et profilé porteur fabriqué selon ledit procédé Download PDF

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Publication number
EP3590617B1
EP3590617B1 EP19183901.8A EP19183901A EP3590617B1 EP 3590617 B1 EP3590617 B1 EP 3590617B1 EP 19183901 A EP19183901 A EP 19183901A EP 3590617 B1 EP3590617 B1 EP 3590617B1
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EP
European Patent Office
Prior art keywords
seam
edge
longitudinal
beam profile
radius
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.)
Active
Application number
EP19183901.8A
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German (de)
English (en)
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EP3590617A1 (fr
Inventor
Paul Heigl
Harald Schachinger
Hubert Fuchslueger
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.)
WELSER PROFILE AUSTRIA GmbH
Original Assignee
WELSER PROFILE AUSTRIA GmbH
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Publication of EP3590617A1 publication Critical patent/EP3590617A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars

Definitions

  • the invention relates to a method for producing a support profile from sheet metal, the sheet metal having a first longitudinal edge and a second longitudinal edge, the first longitudinal edge and the second longitudinal edge being parallel to one another.
  • the present invention also provides a carrier profile which is produced by the method according to the invention, in particular according to one of the embodiments described above.
  • the method comprises a step of bending, the sheet metal being bent into the shape of the carrier profile.
  • the first longitudinal edge is bent into a first envelope with a first envelope edge and the second longitudinal edge is bent into a second envelope with a second envelope edge, the first envelope edge and the second envelope edge being in direct contact, with sheet metal being bent to form the carrier profile in such a way that the first and the second longitudinal edge lie within the carrier profile.
  • the method further comprises a step of welding the first folded edge and the second folded edge to one another, the welding being formed by a step of high-frequency welding or by a step of fusion welding.
  • a method for producing a support profile is from among others FR 2 865 667 A1 known. Processes of this type are used for the production of support profiles with integrated rails. However, the outwardly bent envelopes lead to an inhomogeneous outer surface with additional joints or edges, which make it difficult to use for carrier profiles with a precise surface fit. The welding consumables used for this process can also contribute to the unevenness of the outer surface, but reworking them can weaken the connection point and thus the strength of the support profile.
  • a method according to the preamble of independent claim 1 is for example from DE69002760T2 known.
  • the object of the present invention is to provide a method for producing a support profile from a sheet metal which has both high strength and high surface quality.
  • independent claims 1 and 14 Accordingly, in a method according to the preamble of independent claim 1, there is an inventive solution to the object when the longitudinal edges are bent over by 180 ° so that the envelopes each on the later On the inside of the support profile, the longitudinal edges being bent in such a way that, after the sheet metal has been formed into the support profile and before the two cover edges have been welded, the end face facing the other edge, which runs orthogonally to the respective envelope and has a first radius into an outer side of the support profile, and with a second radius merges into the respective envelope, at least the first radius being smaller than the sheet thickness D of the sheet metal .
  • the folded edges are welded to one another either by means of inductive high-frequency welding or fusion welding.
  • a high-frequency (HF) welding process By using a high-frequency (HF) welding process, a particularly good connection between the two envelopes can be achieved, with the use of welding consumables being dispensed with.
  • This process gives the weld seam a particularly high level of strength and enables its high stability without supporting the seam from the inside on the profile.
  • the eddy currents generated by the induction coils also make it possible to limit the heat input to the edges to be welded.
  • a fusion welding process such as a metal-active gas welding process or a carbon dioxide laser welding process can also be used.
  • the inwardly bent envelopes also reinforce the stability of the support profile in the area around the weld, since the support profile is double-walled in this area. As a result, the moment of resistance and the geometrical moment of inertia of the support profile can be increased in this area without additional reinforcement elements having to be welded on in this area.
  • the edge of the envelope forms the folded edge of the envelope. After the bend has taken place, and before the two folded edges are welded together, it forms the new outer edge of the respective longitudinal edge, so to speak.
  • the sheet metal is preferably formed in a process for cold roll forming.
  • the sheet metal is preferably a pure metal sheet without a plastic coating or the like. In any case, the base material of the sheet metal is worn away. More preferably, the sheet is a steel sheet.
  • the carrier profile has a longitudinal side, the longitudinal side having an inner width, the weld running along the longitudinal side.
  • the rigidity of the long side can be increased, whereby in particular one-sided loaded carrier profiles can be reinforced without increasing their external dimensions.
  • the carrier profile has a first width of the first envelope perpendicular to the longitudinal extension of the carrier profile and a second width of the second envelope perpendicular to the longitudinal extension of the carrier profile, the first envelope over the first length and the second envelope over the second length rest against an inside of the support profile.
  • the rigidity and the geometrical moment of inertia of the carrier profile can be increased further.
  • the effect of the eddy currents and thus of the heat input on the edges to be welded can be improved by the high-frequency welding step through the electrical contact between the envelopes and the inside of the carrier profile.
  • the first width and the second width are each at least twice the thickness of the sheet metal.
  • the sum of the first width and the second width covers at least 50% of the inner width of the long side.
  • the sum of the first width and the second width essentially completely covers the inner width of the longitudinal side.
  • a particularly stressed side wall of the carrier profile can be additionally reinforced mechanically.
  • the first longitudinal edge and the second longitudinal edge abut one another.
  • at least a part of the carrier profile can be made double-walled, so that its cross-sectional values can be improved without the use of a greater thickness of the sheet metal used for production.
  • at least a first cavity of the carrier profile can be doubled in its wall thickness.
  • eddy currents flowing back on the inside of the support profile can cause the first longitudinal edge to be welded to the second longitudinal edge in addition to welding the edge of the first envelope to the edge of the second envelope.
  • the first radius is less than half the sheet metal thickness D, more preferably less than 10% of the sheet thickness D, particularly preferably less than 2% of the sheet thickness, and very particularly preferably the first radius is so small that there is a sharp edge at this point.
  • the second radius is preferably larger than the first radius and is preferably more than 30% of the sheet metal thickness D.
  • a groove is rolled in the area of the later folded edge, in particular in the area of the first radius, the groove being made in the side of the sheet metal opposite the later first radius, and / or the longitudinal edge is made up to later cover edge thinned to a smaller thickness.
  • the smaller thickness of the thinned longitudinal edge is preferably between 50% and 80% of the sheet metal thickness D.
  • the end face between the first radius and the second radius is also preferably straight, so that the end faces of the two folded edges can be at least partially brought into flat contact during welding .
  • this embodiment has the advantage that the longitudinal edges can be bent over by 180 ° with as little damage as possible. In addition, it is thereby possible to upset the edges of the fold with sharp edges before welding on the outer circumference and then to weld the edges of the fold without breaking.
  • the production of the support profile includes an additional step of finishing the weld, for example by grinding or planing.
  • the quality of the surface of the weld seam can be further improved, so that particularly high surface tolerances can be achieved.
  • the folded edges are preferably pressed against one another in such a way that a weld seam is raised on the outside of the carrier profile, which is planed off immediately after welding while it is still hot in order to achieve a high surface quality.
  • the elevation of the weld seam is preferably planed in the line at a distance of 500 mm to 700 mm from the weld point. A particularly economical production is thereby achieved.
  • This embodiment also contributes to rapid production of the support profile.
  • edges of the fold do not have to be so strongly compressed or upset during welding in order to achieve a clean weld seam, especially on the outside of the carrier profile, and a high surface quality after planing the weld seam. This also reduces the risk of cracking.
  • the width of a weld seam formed by the welding is at least a single thickness of the sheet metal, but is at most three times the thickness of the sheet metal.
  • the step of high-frequency welding further preferably comprises the use of an impedance core.
  • a rod made of ferritic material is held in the area of the induction coil in the interior of the support profile, with the heat input being able to be concentrated further on the edges to be welded.
  • the carrier profile 10 is formed from a sheet metal 12, in particular a sheet metal strip, the sheet metal 12 having a first envelope 4 bent by 180 ° with a first envelope edge 6 and a second envelope 5 bent by 180 ° with a second envelope edge 7.
  • the sheet metal 12 is brought into the shape of the carrier profile 10, with the first folded edge 6 and the second folded edge 7 of the formed sheet metal 12 lying against one another .
  • the area of the sheet metal 12 lying between the first folded edge 6 and the second folded edge 7 thus forms a cladding sheet 13 of the carrier profile 10.
  • the envelopes 4 and 5 are bent inward in such a way that the first longitudinal edge 2 and the second longitudinal edge 3 within the carrier profile 10 lie.
  • the bending and the means for its implementation are known and are not described in detail here.
  • the forming preferably takes place in a process for cold roll forming.
  • the carrier profile 10 encloses a first cavity 11 and a second cavity 17.
  • the envelopes 4 and 5 are pressed firmly against the cladding sheet 13 of the carrier profile 10 by the 180 ° bending, so that the envelopes 4 and 5 form a double-walled area of the carrier profile 10 with the enveloping sheet 13.
  • the first envelope 4 has a first width 14 and the second envelope 5 has a second width 15.
  • the shape of the envelopes 4 and 5 is selected such that the contact point of the first envelope edge 6 and the second envelope edge 7 is in the middle of the longitudinal side 16.
  • the sum of the first width 14 and the second width 15 essentially completely covers the inner width 9 of the longitudinal side 16.
  • the carrier profile 10 is continuously guided through at least one induction coil through which alternating current flows, with a gap between the first folded edge 6 and the second folded edge 7 which, after passing through the induction coil, is caused by pressing the first folded edge 6 and the second folded edge 7 together is closed.
  • the side surfaces 8 are each by a profile roller pressed together, so that the material of the folded edges 6 and 7 heated to a welding temperature is welded together to form a weld seam 1.
  • the width of the weld 1 is approximately twice the thickness of the sheet metal 12, so that the envelope edges 6 and 7 are welded to one another over their entire thickness, but the envelopes 4 and 5 themselves are essentially not welded to the cladding sheet 13.
  • the means for performing high-frequency welding are already known and will not be described in detail.
  • the surface quality of the carrier profile is further improved by a subsequent step of mechanical reworking of the weld seam 1, in particular by a step of scraping or planing.
  • the invention is not limited to the above embodiment, but rather to the scope of the claims.
  • the sum of the first width 14 and the second width 15 can cover the entire inner circumference of the first cavity 11 so that the first longitudinal edge 2 and the second longitudinal edge 3 lie directly against one another.
  • a groove 18 is preferably rolled in the area of the later folded edge in order to facilitate further deformation and to reduce the risk of cracking.
  • the longitudinal edge is thinned to a smaller thickness until the later edge of the envelope, as is the case Figure 3 shows.
  • the smaller thickness is preferably between 50% and 80% of the original sheet metal thickness D of the sheet metal 12.
  • the thinned edge area is then reshaped as shown in FIG Figure 4 is shown.
  • the resulting edge 6 has an end face facing the other edge 7, which runs orthogonally to the respective envelope 4 and with a first radius R1 into an outside of the carrier profile , and with a second radius R2 merges into the envelope 4, the first radius R1 being significantly smaller than the sheet thickness D of the sheet metal and the second radius R2.
  • the edge of the envelope is compressed in such a way that the first Radius R1 is particularly small and essentially forms a sharp edge.
  • the end face facing the other folded edge runs essentially straight between the first radius R1 and the second radius R2, so that the two folded edges can be at least partially brought into flat contact during welding, which makes the welding process much easier and a relatively low contact pressure during welding requires. This can reduce the risk of cracks.
  • FIG. 5 shows, when welding on the outer circumference, a certain weld seam elevation 19 arises, which is also desired, since this weld seam elevation 19, like Figure 6 shows, in a planing step immediately following the welding process, planing can be carried out while still hot in order to achieve particularly high dimensional accuracy and surface quality.
  • a certain elevation 20 also arises on the inner circumference, but due to the relatively large second radius R2, it does not protrude beyond the surface of the two envelopes 4 and 5 directed into the interior of the carrier profile.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (14)

  1. Procédé de fabrication d'un profilé support (10) à partir d'une tôle (12), la tôle (12) ayant un premier bord longitudinal (2) et un second bord longitudinal (3), le premier bord longitudinal (2) et le second bord longitudinal (3) étant parallèles l'un à l'autre, le procédé comprenant les opérations suivantes:
    a. le cintrage de la tôle (12) pour former le profilé support (10), dans lequel le premier bord longitudinal (2) est plié pour former un premier couvercle (4) avec un premier bord de couvercle (6) et le second bord longitudinal (3) est plié pour former un second couvercle (5) avec un second bord de couvercle (7), dans lequel le premier bord de couvercle (6) et le second bord de couvercle (7) sont en contact direct;
    b. le soudage du premier bord du couvercle (6) et du second bord du couvercle (7) ensemble,
    dans lequel la tôle (12) est pliée pour former le profilé support (10) de sorte que le premier (2) et le second (3) bords longitudinaux se trouvent à l'intérieur du profilé support (10), le soudage étant formé par une étape de soudage à haute fréquence ou par une étape de soudage par fusion,
    caractérisé en ce que les bords longitudinaux (2, 3) sont repliés à 180° de telle sorte que les plis (4, 5) s'appliquent chacun contre un côté intérieur ultérieur du profilé support (10), les bords longitudinaux (2, 3) étant repliés de telle sorte que le bord de pliage (6, 7), après avoir formé la tôle (12) dans le profilé support et avant le soudage des deux bords de pliage (6, 7), présente une face frontale qui est tournée vers l'autre bord respectif de l'enveloppe (6, 7), s'étend orthogonalement à l'enveloppe respective (4, 5) et se prolonge par un premier rayon R1 dans un côté extérieur du profilé porteur, et par un second rayon R2 dans l'enveloppe respective (4, 5), au moins le premier rayon R1 étant inférieur à l'épaisseur D de la tôle (12).
  2. Procédé selon la revendication 1, caractérisé en ce que le profilé support (10) présente un côté longitudinal (16), le côté longitudinal (16) ayant une largeur intérieure (9), et la soudure (1) s'étendant le long du côté longitudinal (16).
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que le profilé support (10) présente une première largeur (14) de la première enveloppe (4) perpendiculaire à l'extension longitudinale du profilé support et une seconde largeur (15) de la seconde enveloppe (5) perpendiculaire à l'extension longitudinale du profilé support (10), la première enveloppe (4) venant en butée contre un côté intérieur du profilé support (10) sur la première longueur (14) et la second enveloppe (5) venant en butée contre un côté intérieur du profilé support (10) sur la second longueur (15).
  4. Procédé selon la revendication 3, caractérisée en ce que la première largeur (14) et la seconde largeur (15) sont chacune au moins deux fois l'épaisseur de la tôle (10).
  5. Procédé selon les revendications 2 et 3, caractérisée en ce que la somme de la première largeur (14) et de la seconde largeur (15) couvre au moins 50% de la largeur intérieure (9) du côté longitudinal (16).
  6. Procédé selon les revendications 2 et 3, caractérisée en ce que la somme de la première largeur (14) et de la seconde largeur (15) couvre sensiblement complètement la largeur intérieure (9) du côté longitudinal (16).
  7. Procédé selon la revendication 7, caractérisé en ce que le premier rayon R1 est inférieur à la moitié de l'épaisseur de la tôle D, et de préférence inférieur à 10% de l'épaisseur de la tôle D.
  8. Procédé selon les revendications 7 ou 8, caractérisé en ce que le second rayon R2 est plus grand que le premier rayon R1 et est de préférence supérieur à 30 % de l'épaisseur de la tôle D.
  9. Procédé selon l'une des revendications 7 à 9, caractérisé en ce qu'une rainure (18) est laminée dans la tôle (12) avant ou pendant le pliage des bords longitudinaux (2, 3) dans la zone du bord de pliage ultérieur (6, 7), en particulier dans la zone du premier rayon R1, et/ou le bord longitudinal (2, 3) est aminci à une épaisseur plus faible jusqu'au bord de pliage ultérieur (5, 6).
  10. Procédé selon la revendication 10, caractérisé en ce que l'épaisseur réduite du bord longitudinal aminci est comprise entre 50 et 80 % de l'épaisseur de la tôle D.
  11. Procédé selon l'une des revendications 7 à 11, caractérisé en ce que la face frontale s'étend tout droit entre le premier rayon R1 et le second rayon R2, de sorte que les faces frontales des deux bords (6, 7) des arêtes de retournement peuvent être mises en contact au moins partiellement de manière plane lors du soudage.
  12. Procédé selon l'une des revendications 1 à 12, caractérisé en ce que les bords (6, 7) des plis sont pressés l'un contre l'autre pendant le soudage de telle sorte qu'il se forme sur le côté extérieur du profilé support (10) une saillie de soudure (19) qui est rabotée immédiatement après le soudage à chaud.
  13. Procédé selon la revendication 13, caractérisé en ce que le rabotage du surélévation du cordon de soudure (19) est effectué en ligne à une distance de 500 mm à 700 mm du point de soudure.
  14. Profilé support (10) en tôle (12), la tôle (12) présentant un premier bord longitudinal (2) et un second bord longitudinal (3), le premier bord longitudinal (2) et le second bord longitudinal (3) étant parallèles l'un à l'autre, caractérisé en ce que la tôle (12) est pliée en forme de profilé support (10), dans lequel le premier bord longitudinal (2) est plié pour former une première couverture (4) avec un premier bord de couverture (6) et le second bord longitudinal (3) est plié pour former une seconde couverture (5) avec un second bord de couverture (7), dans lequel le premier bord de couverture (6) et le second bord de couverture (7) sont en contact direct, dans lequel le premier bord de couverture (6) et le second bord de couverture (7) sont soudés ensemble,
    dans lequel le premier couvercle (4) et le second couvercle (5) sont pliés de telle manière que le premier (2) et le second (3) bord longitudinal se trouvent à l'intérieur du profilé support (10), dans lequel le premier (6) et le second (7) bord du couvercle sont soudés par haute fréquence,
    caractérisé en ce que les bords longitudinaux (2, 3) sont repliés à 180° de telle sorte que les plis (4, 5) s'appuient chacun sur un côté intérieur ultérieur du profilé support (10), les bords longitudinaux (2, 3) étant repliés de telle sorte qu'après la formation de la tôle (12) dans le profilé support et avant le soudage des deux bords de pliage (6, 7), le bord de pliage (6, 7) peut être déplacé vers l'un des autres bords de pliage (6) respectifs, 7), qui s'étend orthogonalement au retournement respectif (4, 5) et se prolonge par un premier rayon R1 dans une face extérieure du profilé support et par un second rayon R2 dans le retournement respectif (4, 5), au moins le premier rayon R1 étant inférieur à l'épaisseur de tôle D de la tôle (12), le profilé support (10) étant fabriqué en particulier par un procédé selon l'une des revendications 1 à 14.
EP19183901.8A 2018-07-02 2019-07-02 Procédé de fabrication d'un profilé porteur à partir d'une tôle et profilé porteur fabriqué selon ledit procédé Active EP3590617B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018115974.9A DE102018115974B4 (de) 2018-07-02 2018-07-02 Verfahren zur Herstellung eines Trägerprofils aus einem Blech und Trägerprofil hergestellt nach dem Verfahren

Publications (2)

Publication Number Publication Date
EP3590617A1 EP3590617A1 (fr) 2020-01-08
EP3590617B1 true EP3590617B1 (fr) 2021-01-20

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EP19183901.8A Active EP3590617B1 (fr) 2018-07-02 2019-07-02 Procédé de fabrication d'un profilé porteur à partir d'une tôle et profilé porteur fabriqué selon ledit procédé

Country Status (4)

Country Link
EP (1) EP3590617B1 (fr)
DE (1) DE102018115974B4 (fr)
DK (1) DK3590617T3 (fr)
ES (1) ES2861056T3 (fr)

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE2031812A1 (de) * 1970-06-26 1971-12-30 IG-Glas Spezialvertrieb GmbH, 8059 Moosinning Abstandshalter für eine Isolierglaseinheit
CA1326340C (fr) * 1988-07-25 1994-01-25 Leslie David Goleby Element de charpente et procede de fabrication connexe
SE462787B (sv) * 1989-01-03 1990-09-03 Ortic Ab Saett att tillverka fyrkantroer av belagda staalband
DE4030335C2 (de) * 1990-09-25 1998-05-20 Lingemann Helmut Gmbh & Co Sprossenhohlprofil für Isolierverglasungen sowie Verfahren zu seiner Herstellung
DE4442434C1 (de) * 1994-11-29 1995-10-05 Welser Ohg Josef Verfahren zum Herstellen rollgeformter Hohlprofile aus Blech
JP2002168576A (ja) * 2000-12-06 2002-06-14 Showa Denko Kk 伝熱管およびその製造方法
FR2865667A1 (fr) 2004-01-29 2005-08-05 Clerc Ind Procede de fabrication d'un element metallique a profil constant. element issu du procede
DE102008051894A1 (de) * 2008-10-16 2010-05-06 Behr Gmbh & Co. Kg Belastungsangepasstes Strukturteil aus Metall für einen Wärmetauscher, Verfahren zur Herstellung eines belastungsangepassten Strukturteils, Wärmetauscher
GB2486671A (en) * 2010-12-22 2012-06-27 Denso Marston Ltd A Heat Exchanger, a Tube for a Heat Exchanger, a Method of making a tube for a Heat Exchanger and a Method of Making a Heat Exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Publication number Publication date
DK3590617T3 (da) 2021-03-22
DE102018115974A1 (de) 2020-01-02
EP3590617A1 (fr) 2020-01-08
DE102018115974B4 (de) 2020-03-26
ES2861056T3 (es) 2021-10-05

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