EP1827727B9 - Verfahren zur Herstellung eines Mehrlagenrohres - Google Patents

Verfahren zur Herstellung eines Mehrlagenrohres Download PDF

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Publication number
EP1827727B9
EP1827727B9 EP05819971A EP05819971A EP1827727B9 EP 1827727 B9 EP1827727 B9 EP 1827727B9 EP 05819971 A EP05819971 A EP 05819971A EP 05819971 A EP05819971 A EP 05819971A EP 1827727 B9 EP1827727 B9 EP 1827727B9
Authority
EP
European Patent Office
Prior art keywords
pipe
layer
material layers
bending roller
manufacture
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.)
Not-in-force
Application number
EP05819971A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1827727B1 (de
EP1827727A1 (de
Inventor
Bernd Berg
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.)
Bergrohr GmbH Siegen
Original Assignee
Bergrohr GmbH Siegen
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 Bergrohr GmbH Siegen filed Critical Bergrohr GmbH Siegen
Priority to DK07016706.9T priority Critical patent/DK1857194T3/da
Priority to EP07016706.9A priority patent/EP1857194B3/de
Publication of EP1827727A1 publication Critical patent/EP1827727A1/de
Publication of EP1827727B1 publication Critical patent/EP1827727B1/de
Application granted granted Critical
Publication of EP1827727B9 publication Critical patent/EP1827727B9/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • 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
    • B21C37/08—Making tubes with welded or soldered seams

Definitions

  • the present invention relates to a method for producing a multilayer pipe.
  • Multilayer pipes are preferably used in case of high requirements against corrosion or abrasion.
  • Corrosion-resistant pressure vessels or pressure lines can be produced more cost-effectively by using multilayer pipes than solid versions made of appropriate materials. This is achieved by the load sharing on a thin, corrosion-resistant inner layer (e.g., stainless and acid resistant steel) and a high strength, pressure resistant outer layer (eg, fine-block steel). As a result, overall steel consumption can be significantly reduced and a large part of the remaining blast consumption can be shifted to low-cost materials.
  • a thin, corrosion-resistant inner layer e.g., stainless and acid resistant steel
  • a high strength, pressure resistant outer layer eg, fine-block steel
  • Abrasion-resistant pipelines are made possible by the design as a multilayer pipe (such as mechanical bond, see below) in certain grades because materials (eg high-strength steels with high hardness) can be used as the inner layer, which alone or only very difficult to Pipes can be processed.
  • the disadvantage of this method according to the prior art is due to the fact that the outer tube must have a higher yield strength than the inner, otherwise missing the frictional connection with the inner tube causing and therefore required elastic resilience of the outer tube.
  • This is particularly disadvantageous because high-strength valuable materials - such as particularly high-strength steels - as they are preferably particularly favorable for abrasion resistant piping inside the pipe, high or even very high yield strengths and thus are not suitable for this manufacturing process.
  • the use of rolled and / or blast-plated semifinished product can be avoided by the fact that the respective functioning as an inner tube material layer already during the tube forming in the bending roll and / or the final shaping usually necessary bending machine frictionally in the respective outer tube functioning Material layer pressed and so frictionally held in the respective outer tube and without having to expand the multi-layer pipe and thus to address the disadvantages already mentioned.
  • a final forming in the bending roll alone is possible, such as shorter bending rolls, which can perform the function of the final shaping of the tube with. In these cases, a bending machine does not participate in the method according to the invention.
  • a compound along an edge or along a (preferably imaginary) line refers to any type of connection along the edge or line, whether that connection is along the entire edge or line or only in sections along the edge or line, or even in single points (such as spot welds), approximately at two points - preferably at the end points of the edge or line - or even at a single point on the edge or on the line.
  • the at least one further connection between the material layers can be created approximately after a deformation progress between 50% and less than 100%.
  • L nfi THERE - 2 ⁇ SA - SI ⁇ ⁇
  • L fv L nfa - L nfi
  • a further preferred embodiment of the method for producing a multilayer pipe by means of a bending roll according to the present invention is characterized in that at least one of the material layers consists of more than one applied element, preferably more than one sheet.
  • the laid-up elements can lie with their longitudinal edge parallel to the longitudinal edge of the underlying material layer, but need not. So it is also possible that they come to rest with their longitudinal edge transverse thereto.
  • the first connection between the material layers is preferably created by the elements, preferably sheets, after being placed along their joint, which at the same time each have a longitudinal edge the elements, preferably sheets, forms the resting material layer, with the underlying material layer, preferably the underlying sheet metal, are connected.
  • This method is particularly suitable for making large diameter, preferably larger than 610 mm (24 ") multilayer pipes of the invention where often the width of available inner layer material strips, preferably steel strips, is insufficient to provide a complete inner layer for such large If two tapes are not sufficient, the process can be continued as desired, in which case three or more elements, preferably metal sheets, are placed.
  • the multilayer pipe is closed by welding the outer pipe along the pipe seam and build-up welding of the inner pipe so as to manufacture the multilayer pipe body.
  • the material layers can be connected to the front sides of the tube, about to prevent the ingress of moisture between the metallurgically yes not fully connected Maschinenstorfflagen.
  • a preferred application of the method according to the present invention is the production of double-layer tubes according to the invention, however, the invention is not limited thereto, also three-, four- and more multi-layer pipes according to the invention are hereby basically produced, which is far more difficult according to the prior art if not impossible at all
  • sheets preferably metal sheets and more preferably steel sheets, as a material layer or elements of the material layer use.
  • At least one of the compounds of the Material layers as a weld which is particularly suitable for the aforementioned metal sheets, preferably steel sheets.
  • the multilayer pipe obtained by the present erfindunbeen method may in particular be designed so that a respective inner material layer relative to the respective outer material layer has a higher yield strength or yield strength (see below) than this wherein at least one material layer preferably made of sheet metal, particularly preferably from Sheet steel exists.
  • a particularly preferred embodiment of a multilayer pipe obtained by the process according to the invention is characterized in that the multilayer pipe is formed as a double-layer pipe, which has two layers of steel sheet, wherein the sheet acting as an inner tube sheet has a high to very high carbon content and thus at least not necessarily weldable is.
  • the multi-layer pipes thus obtained according to the invention are different in many ways from those of the prior art, but without that these differences must all simultaneously show up in a multi-layer pipe according to the invention and thus could characterize it. Rather, these differences can occur in different combinations with each other, but they do not have to.
  • multi-layer pipes - in particular double-layer pipes made of sheet steel with high yield strength of the respective material Inner tube are produced at the same time lower yield strength of the material of contrast, the respective outer tube, which is required for such uses of multi-layer pipes, for which it has the highest possible abrasion resistance of the Inner tube arrives, since a high abrasion resistance usually synonymous with a high hardness and this in turn is accompanied by a high yield strength
  • Such multilayer tubes having an inner tube made of a material with higher than or equal yield strength a pipe arranged outside this, but still no full metallurgical Connection of adjacent layers show, can not be produced so far in the prior art; they do not exist yet.
  • the inventive method and multilayer pipes without the use of expensive and poorly available plated (full metallurgically bonded) sheets in almost any large diameters can be produced, which is not yet possible in the prior art, since the necessary expansion by the Dimensions of the expansion punches used or by a necessary in the case of hydraulic expansion force for the uniform molding die enclosing the multi-layer tube to be produced, is limited.
  • the bending roll method according to the invention allows multilayer pipes which are not subject to such predetermined limits, since the bending roll, which indeed only forms a shaping at one point of the radius of curvature of the pipe, thus does not limit the diameter of the multilayer pipe according to the invention. This makes it possible, in particular, to produce multilayer pipes without plated metal sheets which exceed the limit given by the current state of the art of approximately 610 mm (24 ”) diameter, preferably far.
  • the present invention first enables the production of multilayer tubes with partial inner layer, i. a cross-sectionally only a partial circle forming inner tube, for example in the form of a gutter insert on the pipe base, which has hitherto also not possible according to the prior art
  • Fig. 1 shows a perspective sketch outlined on two superimposed, to be combined multi-layer pipe material layers 1, 2nd
  • Fig. 2 shows a perspective sketch outlined on two superposed, to be combined multilayer pipe material layers with a first compound 3a and 3b - preferably welding (namely at the points 3a, 3b) - between the material layers 1, 2 approximately along a (imaginary) line parallel to a longitudinal edge 4 of the overlying material layer.
  • Fig. 3 shows a perspective sketch outlined on two superposed to multilayer pipe to be combined material layers 1a, 1b, 2, in which case one of the material layers, namely the applied material layer of two launched in the tube longitudinal direction elements 1a, 1b - preferably sheets - consists
  • Fig. 3a shows a further perspective sketch outlined on two superimposed to multilayer pipe to be combined material layers 1a, 1b, ..., 1n, 2, in which case one of the material layers, namely the applied material layer of a variety, namely a finite number - here called n - of 1a, 1b,... 1n, preferably sheet metal, are made up of elements 1a, 1b,..., 1n deposited in the circumferential direction of the pipe. In the drawing, this is indicated by a dotted line 11 indicated.
  • Fig. 4 shows a perspective sketch outlined on two superposed, multi-layer tube to be combined material layers 1a, 1b, 2, wherein one of the material layers of more than one, namely here two launched elements 1a, 1b - preferably sheets - and here a compound 3 between the material layers was created by the elements 1a, 1b after laying along its joint, which also forms a respective longitudinal edge of the elements 1a, 1b of the overlying material layer, connected to the underlying material layer 2, preferably welded.
  • this compound 3 along the joint and at the same time longitudinal edge by extending over the entire length of the joint and at the same time longitudinal edge extending closed connection 3, preferably welding.
  • a partial connection preferably welding is possible.
  • Fig. 5 shows a perspective sketched view into an inventive multi-layer pipe 5 from one end side during the manufacturing process according to the invention, namely in the process step where the resulting multilayer material using the bending roll (the bending roll itself is hidden here and therefore not visible) to the pipe 5 is formed, whereby by the pressure of the rollers from top and bottom constantly a frictional engagement between the material layers 1, 2 is generated and during deformation the still freely mutually displaceable parts 1c against 2a, and 1d against 2b of the material layers due to the different bending radii of Inner tube 1 and outer tube 2 move according to the deformation progress freely to each other.
  • the first connection 3a and 3b between the two fabric layers 1, 2 took place here already at two points 3a, 3b, which lie along a (imaginary) line parallel to a longitudinal edge of the forming inner tube 2 - namely at the local end points. In the region of this first connection 3a and 3b of the material layers 1, 2, however, they can no longer shift relative to each other due to their connection 3a and 3b, but instead remain fixed relative to one another.
  • Fig. 6 shows a perspective sketched perspective in an inventive multilayer pipe 5 from one end side during the manufacturing process according to the invention, namely in the process step, where after a certain deformation progress at least one further connection - here two other compounds - 6a and 6b, here in each case as a continuous or partially executed , Welded seam, between the material layers 1, 2 was created by the fact that the overlying material layer 1 at at least one other position - were connected to each other - here at two other positions.
  • the multi-layer tube 5 can be formed using the bending roller and / or bending machine to the end (no longer visible), which now no longer move against each other during this final shaping the material layers due to the further connections 6a and 6b, causing the respective material layer 1, 1c, 1d acting as an inner tube is non-positively pressed into the respective material layer 2, 2a, 2b acting as an outer tube
  • Fig. 7 shows then a perspective cross section through a finished inventive multilayer pipe 5 with inner layer (also called inner tube, inner tube, inner plate, etc.) 1 and outer layer (also outer tube, outer tube, base plate, etc. called) 2, wherein the multilayer tube 5 by a weld 7 of the outer tube 2 was closed along a pipe seam 8 and a build-up weld 9 of the inner tube 1.
  • inner layer also called inner tube, inner tube, inner plate, etc.
  • outer layer also outer tube, outer tube, base plate, etc. called
  • Fig. 8 shows a perspective cross section through a multilayer pipe after Fig. 7 with inner layer 1 and outer layer 2 in a detailed view in the region of the two weld seams 7, 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP05819971A 2004-12-21 2005-12-16 Verfahren zur Herstellung eines Mehrlagenrohres Not-in-force EP1827727B9 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK07016706.9T DK1857194T3 (da) 2004-12-21 2005-12-16 Flerlagsrør og fremgangsmåde til fremstilling deraf
EP07016706.9A EP1857194B3 (de) 2004-12-21 2005-12-16 Mehrlagenrohr sowie Verfahren zu seiner Herstellung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062697 2004-12-21
PCT/EP2005/013569 WO2006066814A1 (de) 2004-12-21 2005-12-16 Mehrlagenrohr sowie verfahren zu seiner herstellung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP07016706.9A Division EP1857194B3 (de) 2004-12-21 2005-12-16 Mehrlagenrohr sowie Verfahren zu seiner Herstellung

Publications (3)

Publication Number Publication Date
EP1827727A1 EP1827727A1 (de) 2007-09-05
EP1827727B1 EP1827727B1 (de) 2008-05-14
EP1827727B9 true EP1827727B9 (de) 2008-11-05

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP05819971A Not-in-force EP1827727B9 (de) 2004-12-21 2005-12-16 Verfahren zur Herstellung eines Mehrlagenrohres
EP07016706.9A Not-in-force EP1857194B3 (de) 2004-12-21 2005-12-16 Mehrlagenrohr sowie Verfahren zu seiner Herstellung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07016706.9A Not-in-force EP1857194B3 (de) 2004-12-21 2005-12-16 Mehrlagenrohr sowie Verfahren zu seiner Herstellung

Country Status (15)

Country Link
US (2) US8117882B2 (ja)
EP (2) EP1827727B9 (ja)
JP (2) JP4546543B2 (ja)
KR (2) KR101281321B1 (ja)
CN (2) CN101934303B (ja)
AT (2) ATE395150T1 (ja)
AU (2) AU2005318485B2 (ja)
BR (1) BRPI0519169A2 (ja)
CA (2) CA2592003C (ja)
DE (1) DE502005004156D1 (ja)
DK (2) DK1857194T3 (ja)
ES (1) ES2308586T3 (ja)
MY (1) MY140142A (ja)
SG (1) SG155259A1 (ja)
WO (1) WO2006066814A1 (ja)

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DK1857194T3 (da) 2004-12-21 2011-11-21 Bergrohr Gmbh Siegen Flerlagsrør og fremgangsmåde til fremstilling deraf
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AU2005318485A1 (en) 2006-06-29
ES2308586T3 (es) 2008-12-01
US20090288467A1 (en) 2009-11-26
AU2009201144A1 (en) 2009-04-09
KR20070101864A (ko) 2007-10-17
EP1857194A1 (de) 2007-11-21
DK1857194T3 (da) 2011-11-21
EP1857194B3 (de) 2013-09-04
AU2009201144B2 (en) 2012-02-23
JP2009220182A (ja) 2009-10-01
JP5166366B2 (ja) 2013-03-21
CA2592003A1 (en) 2006-06-29
SG155259A1 (en) 2009-09-30
CN101934303B (zh) 2013-05-08
KR101281321B1 (ko) 2013-07-03
US20090293981A1 (en) 2009-12-03
CN101087665A (zh) 2007-12-12
ATE395150T1 (de) 2008-05-15
KR101281417B1 (ko) 2013-07-02
EP1857194B1 (de) 2011-07-27
EP1827727B1 (de) 2008-05-14
CN101087665B (zh) 2010-07-28
MY140142A (en) 2009-11-30
EP1827727A1 (de) 2007-09-05
DK1827727T3 (da) 2008-09-15
JP2008523996A (ja) 2008-07-10
CA2592003C (en) 2014-05-06
ATE517703T1 (de) 2011-08-15
AU2005318485B2 (en) 2011-07-28
CN101934303A (zh) 2011-01-05
BRPI0519169A2 (pt) 2008-12-30
KR20090043616A (ko) 2009-05-06
US8117882B2 (en) 2012-02-21
DE502005004156D1 (de) 2008-06-26
CA2658859A1 (en) 2006-06-29
WO2006066814A1 (de) 2006-06-29
JP4546543B2 (ja) 2010-09-15

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