DE1602255A1 - Method and device for the production of pipe arches - Google Patents

Method and device for the production of pipe arches

Info

Publication number
DE1602255A1
DE1602255A1 DE19671602255 DE1602255A DE1602255A1 DE 1602255 A1 DE1602255 A1 DE 1602255A1 DE 19671602255 DE19671602255 DE 19671602255 DE 1602255 A DE1602255 A DE 1602255A DE 1602255 A1 DE1602255 A1 DE 1602255A1
Authority
DE
Germany
Prior art keywords
pipe
production
thin
walled
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE19671602255
Other languages
German (de)
Inventor
Dipl-Ing Georg Kloska
Guenter Meinhardt
Dipl-Ing Karl-Heinz Witt
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.)
Deutsche Babcock and Wilcox AG
Original Assignee
Deutsche Babcock and Wilcox AG
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 Deutsche Babcock and Wilcox AG filed Critical Deutsche Babcock and Wilcox AG
Publication of DE1602255A1 publication Critical patent/DE1602255A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033Deforming tubular bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture 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
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/28Making tube fittings for connecting pipes, e.g. U-pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033Deforming tubular bodies
    • B21D26/045Closing or sealing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

Verfahren und Vcrriahturig zur Herstellung' von Rührbögen ------------------------- Il.e Erfindung betrifft ein Verfahren und eine Vorrichtung - zur Tierstellung dünnzvandg er RRohrb ö g en: hoher Genauigkeit. - :gs sind verschiedene, RRohrbiegeverfähren bekannt ,geworden bei denen aber eine hohe Genauigkeit des Bogentu.ers;ehnttes bei- dünnwandigen .Rohren nicht erzielt werden kann, oder bei denen durch Einführung a-inae, festen Körpers.-, z;> B.> eines Dornes,; die Gefahr- der IhnenfläehenVerletzung durch. den Beten. Körper besteht und . aomLt eine: glatte: Innen- fläehe" deal Bogens nicht, gewährleistet ist. ` - Es ist aueh" bekannt (ästerrelchische Pätentschrift. 22@ T62)1. topfartige, dünnwandige Hohlkörper mixt einer Üffnu innerhalb e4er geteilten- Matrize- durch Innendruck = a-uf- zuwei-Lenx Diese Matrize: fs,t zur- Aufwe.tung yan: R.ah:rbögen Es ist Aufgabe der Erfindunr2, dünnwandige: lohrbö#;en saus Rohren so herzustellen, daß der Innenquerschnitt des Bogens-eine genau vorauszubestimmende form hat, und daß die Innenwandfläche des Hohrbogens bei der Herstellung unbeschädigt bleibt. Die Erfindung-besteht darin, daß ein Rohrbogen., der, in an sieh bekannter "leise, z.. I3. -,it einer Kolophonium- fizllung aus einem geraden Rohr vorgeboöen ist, anschließend innerhalb einer Matrize: durch Innendruel£l- maßhaltig auf- geweitet wird. Die Vorrichtung; zum Rufweiten eines Rohrbogens besteht aus einer geteilten Matrize,- von deren Matrizenhohlraum zwei Öffnungen nach außen führen,, in denen sich. zwei Pfropfen für den-dichten Verechluß der Rohrbog,enschenice.l befinden,. die durch Vorsprung;flächen in den ÖfnLu}gen gegc,.n den Aufweitdruak gehalten werden, wobei eia: Pfropfen für die DruGI=tteleinpressung durchbohrt ist. Nach dem Verfahren mit der beschriebenen Vorrichtung ist es möglich gewor°cenx aus dünnwandigen Präzisionsrohren R.ahrbügen hersustellen, deren lichter Querschnitt nur einige hund.ertstel t= ganz gewünschten Querschnitt abweicht. Dabei- wird die Glattheft der inneren RQhrflUe in, keines Weise gefährdet Das Verfahren hat weiterhin- den Vorteil, daß im gleichen 'bei tsvorbang, nit der gleichem. .Genauigkeit im ,geraden Schel'il#:elteil des Rohrbogen8, @ufweitungen vorgenommen werden können, die z. Bfür die Hohrverbindurig des 3ogens zweclrlrißi sind. _ - In: der Zieichnunr, ist die Vorrichtung zur maßhaltigen Auf- -#S der ilohrbööen beispielhaft dargestellt. L s zeig f. 1 den äclulitt eines vorefertgtezRohrbögens inner- halb einer l:latrizenhälfte, P!i-o 2 - delächni_ tt .eimies fertigen Rohrbogens. In ;Mg. 1 ist mit 1 ein um 180° vorgebogenes dünnviandiges %ohr bezeichnet. Der .iuerschnitt des Bogens ist durch das Biegen des 1,1:ohres mit IColophöniumf'u`llung oval und verengt. Der Hohlraum 2-der zweiteiligen läätrize 3 weist `die Form auf, durch- die der gewünschte Innen quers chnitt des Rohr= - bogens 1 erzielt wird, wenn die -Rohrbogenvaand 1 bis an - ciie '@iand des üohlraumes 2 durch Innendruck aufgewetet wird. Die beiden Schenkel d-es vorgebogenen Rohres 1 sind mit zwei Pfrol1-eil 11 und 5 verschlossen und durch- 0-Ringe G abgedichtet. Die Pfropfen 4 und 5 sind an. Vorsprungflächen 7- des 11«atz!izenhohlraumes abgestützt. Der :Pfropfen 5 weist- - - eitle Bohrung 8 auf. Im Bereich der geraden Sehe.xkel- sind . Erweiterung=en des 1.iatrizerihohlraümes- uor,gesehen. Die innere TYaßh«ltigheit -des vorgebogenen Rohres wird dadurch erzielt, daß bei zusammengesetzter Latrize durch die :Bohrung 8 des Pfropfens 5 z. i3. Öl mit hohem Druck in den Innenraum des Rohres eingepreßt wird, der das Außen- maß des Rohres bis auf das Innenmaß des i,.atrizenh.ohlrauLies 2, 9 aufweitet. Bei der Pormgebung des I,iatrizeniioiilrLiuiiire# ! ! 2 ist die `anddickenänderung des Rohres beim VorbieGen und die Rückfederung der Rohrwand beim Nachlassen des Aufweit- drucken berücksichtigt. Die Pfropfen 4 und 5 werden durch die Vorsprungfl=wchen 7 gegen den Aufweitdruck des Öles festgehalten. In den Hohlraumerweiterunöen 9 der Matrize 3 vierden im bleichen kufweitvorgang zusätzlich muff enar-tige Schenhelenden des ,Rohrbogens gebildet. In.. ttlig. 2 ist. der Schnitt eines fertigen I@ohr)ogens 1 dargestellt, dessen innerer Querschnitt bei einer Krümiaung von 1800 gleichbleibend rund ist, und dessen innere Wand- flächen glatt sind und keinerlei i.-:echaazische Verletzungeu aufweisen. Die Schenkelenden des aohrbogas sind muffen- artig aufeweitet. Der gezeigte Hoi.rbogen wurde aus cineni - dünnwandigen Präzisionsrohr o.üs rostfreiem Stahl hergestellt und is-t lüz° @;.ie- L"zriloniung überhitzten Wasserdampfes Liit sehr hoher Gesahwiridigkeit vorgesehen.. Method and method of manufacture of stirring arches ------------------------- Il.e invention relates to a method and a device - for animal positioning thin-walled pipe bends: high accuracy. - : There are various known RR pipe bending processes but with which a high accuracy of the arched door; ehnttes with thin-walled .pipes cannot be achieved, or in those by introducing a-inae, solid body.-, e.g.>B.> a thorn; the danger of causing him injury. the prayers. Body consists and. aomLt one: smooth: Inn en- do not ask "deal arc, is guaranteed." It is also known (aesthetic patent specification. 22 @ T62) 1. Pot-like, thin-walled hollow bodies are what a Üffnu mixes inside e4er divided- die- by internal pressure = a-uf- zuwei-Lenx This matrix: fs, t zur- Aufwe.tung yan: R.ah: rbögen It is the task of the invention, thin-walled: lohrbö #; en saus Manufacture pipes so that the inner cross-section of the Arch has a form that is precisely to be determined in advance, and that the inner wall surface of the arch during manufacture remains undamaged. The invention consists in the fact that a pipe bend., The, in well-known "quiet, z .. I3. -, with a rosin filling is pre-boiled from a straight pipe, then within a die: by means of the inner pressure is widened. The device; for the call widths of a pipe bend from a divided die, - from its die cavity two openings lead to the outside, in which. two Plug for the tight closure of the pipe bend, enschenice.l are located,. by projection;, .n surfaces in the ÖfnLu} gen g egc the expansion pressure be held, where eia: stopper for the DruGI = tteleinpressung is pierced. Following the procedure with the device described is it was made possible by thin-walled precision tubes Usually, make up the clear cross-section of which is only a few hundredths of t = completely different cross-section. In doing so, the smooth handle of the inner RQhrflUe in, none Way endangered The method also has the advantage that in the same 'at tsvorbang, not the same. .Accuracy in the, straight line Schel'il #: elteil des Rohrbogen8, widenings made can be that z. B for the hearing connection of the 3ogens are reasons. _ - In: der Zieichnunr, is the device for dimensionally accurate - # S of the ilohrbööen shown as an example. L s show f. 1 the equilibrium of a pre-fabricated pipe bend inside half of a l: latric half, P! Io 2 - delächni_ tt .eimies finished pipe bend. In; Mg. 1 is with 1 a 180 ° pre-bent thin-walled % ear. The cross-section of the arch is made possible by the Bending of the 1.1: ear with rosin filling oval and narrowed. The cavity 2 - the two-part läätrize 3 has `the shape through which the desired inside cross section of the pipe = - bogens 1 is achieved when the -Rohrbogenvaand 1 to an - ciie '@iand des üohlraumes 2 is raised by internal pressure. The two legs of the pre-bent tube 1 are with two Pfrol1-eil 11 and 5 closed and through-O-rings G sealed. The plugs 4 and 5 are on. Protruding surfaces 7- of the 11 "atz! izen cavity supported. The: plug 5 shows - - - empty hole 8. In the area of the straight Sehe.xkel- are . Enlargement of the 1st uterine cavity, seen. The inner tightness of the pre-bent tube becomes achieved by the fact that when the lathe is assembled the: hole 8 of the plug 5 z. i3. High pressure oil is pressed into the interior of the pipe, which the outer dimension of the pipe up to the inner dimension of the i, .atrizenh.ohlrauLies 2, 9 expands. When shaping the I, iatrizeniioiilrLiuiiire #! ! 2 is the change in thickness of the pipe during pre-bending and the springback of the pipe wall when the expansion print taken into account. The plug 4 and 5 are through the projection surfaces 7 counteract the expansion pressure of the oil held. In the cavity widening areas 9 of the die 3 Vierden in the pale kuf-widening process additionally must-like Schenhelenden des, pipe bends formed. In .. active. 2 is. the cut of a finished ear) bow 1 shown, its inner cross-section at a curvature from 1800 is consistently round, and its inner wall surfaces are smooth and have no i .-: echaazic injuryeu exhibit. The leg ends of the aohrbogas are socket- widened nicely. The hoop bow shown was made from cineni - thin-walled precision tube or made of stainless steel and is-t lüz ° @ ;. ie- L "zriloniung superheated steam liit very high Gesahwiridigkeit provided.

Claims (1)

p ä t e n" t. a n s p r ü c h e - ------------ 1. Verfahren zur Herstellung dünnwandiger Rohrbögen hoher Genauigkeit, gekennzeichnet, daß Rohre in an siez bekannter leise vorgebogen und anschließend. durch Innen Druck- auf das .gewünschte Itäß aufgevreitet vierden. 2. Geteilte Latris-e zum-.Aufweiten eines Rohrbogens, dädurc-h- ge'_3 ennzcichnet, daß vom iristrizenhohlraum (2 zwei öf- - nungen nach außen führen, in denen Verschlußpfropfen (¢, 5) sich gegen Vorsprün e (7) abstützen, wobei einer der Verschlußpfropfen (5) eine Bohrung (83) aufweist.-_
patents "t. claims - ------------ 1. Process for the production of thin-walled pipe bends high Accuracy, marked that pipes in at Siez known softly pre-bent and then. by Inside pressure applied to the desired area. 2. Split latris-e for expanding a pipe bend, dädurc-h- ge'_3 indicated that from the iris cavity (2 two open - Connections to the outside, in which stopper (¢, 5) are supported against projections (7), with one the sealing plug (5) has a bore (83).
DE19671602255 1967-11-24 1967-11-24 Method and device for the production of pipe arches Pending DE1602255A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0054680 1967-11-24

Publications (1)

Publication Number Publication Date
DE1602255A1 true DE1602255A1 (en) 1970-05-06

Family

ID=7055949

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671602255 Pending DE1602255A1 (en) 1967-11-24 1967-11-24 Method and device for the production of pipe arches

Country Status (1)

Country Link
DE (1) DE1602255A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549750A1 (en) * 1983-07-29 1985-02-01 Tubest Sa Method for shaping metal conduits intended for the production of condensers, heat exchangers and the like.
EP0294034A2 (en) * 1987-05-06 1988-12-07 TI Corporate Services Limited Method of forming box-like frame members
DE3938388A1 (en) * 1989-11-18 1991-05-23 Behr Gmbh & Co Mfg. U=shaped tube elbows for heat exchanger - forms solder venting ducts by milling cutters, with tube still straight
EP0610783A1 (en) * 1993-02-09 1994-08-17 FIAT AUTO S.p.A. Method for the production of boxed structural components for vehicle bodyworks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549750A1 (en) * 1983-07-29 1985-02-01 Tubest Sa Method for shaping metal conduits intended for the production of condensers, heat exchangers and the like.
EP0294034A2 (en) * 1987-05-06 1988-12-07 TI Corporate Services Limited Method of forming box-like frame members
EP0294034A3 (en) * 1987-05-06 1990-01-24 Ti Corporate Services Limited Method of forming box-like frame members
DE3938388A1 (en) * 1989-11-18 1991-05-23 Behr Gmbh & Co Mfg. U=shaped tube elbows for heat exchanger - forms solder venting ducts by milling cutters, with tube still straight
EP0610783A1 (en) * 1993-02-09 1994-08-17 FIAT AUTO S.p.A. Method for the production of boxed structural components for vehicle bodyworks

Similar Documents

Publication Publication Date Title
DE2501774A1 (en) FLEXIBLE SEALING STRIP AND METHOD OF MANUFACTURING IT
DE2310365A1 (en) SPRING FOR A COMPOSITE SEAL RING
EP4252931A2 (en) U-o-shape of a component curved around three axes
DE1602255A1 (en) Method and device for the production of pipe arches
DE69103254T2 (en) Can body.
DE1068206B (en) Method for producing a curved pipe fitting
DE102005036419A1 (en) Production of a bulged hollow profile used as a gas generator housing for an airbag arrangement comprises placing a hollow profile into an inner high pressure deforming tool, flattening and further processing
DE102016123674A1 (en) Hydroforming tube and method for its production
DE3120655C2 (en) Slotted piston ring and process for its manufacture
DE2006109A1 (en) Device for bending metal pipes
DE2536852A1 (en) Form tool for producing curved duct sections - forces duct into ring gap between core and tool body
DE19829577B4 (en) Method and device for producing parts by means of internal high-pressure forming technology
DE952584C (en) Process for the hot forming of hollow bodies
DE924004C (en) Process for the production of steel pipe elbows from straight, thin-walled, tubular parts of large diameter
DE420609C (en) Device for straightening the ends of bent pipe sections (pipe bends)
DE1261102B (en) Method and device for the manufacture of pipe bends with a cross section that tapers evenly from one end to the other
DE102004039599B3 (en) Process to produce sheet metal of varying thickness for subsequent use as pipe rolling material or profiled components
DE2346997A1 (en) METHOD OF MANUFACTURING A RUBBER COATED TIRE VALVE
DE2323951A1 (en) METHOD OF CONNECTING A COVER TO A PIPE THROUGH IT IN SILENCERS
DE617014C (en) Process for the formation of transverse folds in the wall of a metal pipe
AT396441B (en) Method of producing a double-walled shaft
DE69714341T2 (en) Preparation of an accessible graft
AT112942B (en) Device for establishing a connection between the central tube and the two side tubes of storm lanterns.
DE830782C (en) Press for the production of hollow bodies
DE595795C (en) Method and device for the production of tubular elbows from asbestos cement