WO2001070426A2 - Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends - Google Patents
Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends Download PDFInfo
- Publication number
- WO2001070426A2 WO2001070426A2 PCT/EP2001/003060 EP0103060W WO0170426A2 WO 2001070426 A2 WO2001070426 A2 WO 2001070426A2 EP 0103060 W EP0103060 W EP 0103060W WO 0170426 A2 WO0170426 A2 WO 0170426A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bending
- pipe
- titanium zinc
- pipes
- weld seam
- Prior art date
Links
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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
- B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
- B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member
Definitions
- sheet steel has a ratio B of the ratio of width to thickness change of about 1.7.
- the ratio B is used to characterize the flowability of a material, the ratio B resulting from a change in width to thickness in the tensile test.
- the invention further relates to a method of bending of titanium zinc to EN 988 existing pipes with a nominal diameter between 90 and 150 mm for pipe bends with a bend angle between 30 ° and 90 °, which are butt-welded by a plane extending parallel to the tube axis weld " and which are intended in particular for downpipes according to EN 612, with a pipe bending device as is known per se for the bending of steel pipes, the titanium zinc according to EN 988 being anisotropic in a sense that the ratio of change in width to thickness is compared with steel, is relatively low and the existing weld seam of the output tube during bending lies in the area of the non-elongated layer.
- the initial thickness of the downpipes according to EN 612 is from nominal diameters between 50 and 150 mm between 0.65 and 1.2 mm.
- a bending radius of 175 mm with a metal thickness of 0.7 mm to 1 mm can be assumed as typical values for a pipe bend with a bending angle of 60 °.
- a range from 0.6 to 1.5 mm forms the range of the metal thickness for thin-walled sheet metal tube bends.
- Methods are known to the person skilled in the art for forming such steel sheet tubes into a tube bend (cf. WD FRANZ: The cold bending of tubes; Springer-Verlag, 1961).
- Preferred is a tube bending process in which the tube is bent using a mandrel. The forming can be facilitated by an additional internal pressure and the friction between mandrel and tube can be reduced by means of lubricant. This process, which is known per se, can be used with particular advantage on pipes made of titanium zinc in accordance with EN 988.
- a titanium zinc pipe with a nominal diameter of 100 mm which has a butt welded longitudinal seam, becomes a continuous sequence of each other hanging pipe pieces bent.
- the tube wall thickness is 1.0 mm.
- the pipe is clamped at one end with a clamping device.
- the clamping device has an inner core 1 and outer jaws 2. It is only clamped over a length of approximately 50 mm.
- a piston rod 3 is guided through the inner core of the clamping device and can be pushed as well as pulled and to which an internal mandrel 4 is attached.
- the piston rod with the internal mandrel is located inside the tube.
- the pipe to be bent is also clamped at the other end.
- a spreading segment is introduced and mechanically spread for this purpose. From the outside, the tube is clamped between the clamping jaw and the bending mold 7 by closing a clamping jaw 6.
- the combination of clamping jaw and bending shape rotates about the axis of the bending shaft 8 and thus bends the tube.
- the spreading segment prevents the tube from collapsing.
- the bending mandrel 4 in the interior of the tube consists of several, preferably 2 to 6, members. It is designed to prevent the tube from collapsing or folding during bending.
- a smoothing shoe 9 which has the task of closing the tangential transition from the tube to the bending roller 7 and preventing wrinkling.
- a sliding segment 10 supports the reflow of the material during the bending on the outside of the tube. With the aid of a hydraulic cylinder 11, the bending mandrel 7 can be advanced or retarded via the piston rod 3.
- the clamping jaw 6 and the sliding segment are retracted radially.
- the bending shape swings back into the starting position.
- the bending mandrel is also pulled back into its starting position via the hydraulic cylinder 11.
- the tube is rotated axially through 180 ° via the rear clamping 1.2.
- the bending process is repeated, so that another pipe section is created.
- the expansion segment is only required for the first bending process of each tube.
- the process is repeated until the exit pipe is completely processed.
- the repeatedly bent pipe is then cut into suitable pipe pieces.
- the length of the pipe can also be chosen so that only a single pipe bend is created.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01925482A EP1265719B1 (en) | 2000-03-23 | 2001-03-16 | Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends |
AU2001252217A AU2001252217A1 (en) | 2000-03-23 | 2001-03-16 | Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends |
DK01925482T DK1265719T3 (en) | 2000-03-23 | 2001-03-16 | Use of tubes and titanium zinc according to EN 988 and bending method for the manufacture of tube bends |
DE50105029T DE50105029D1 (en) | 2000-03-23 | 2001-03-16 | USE OF TITANZINK TUBES ACCORDING TO EN 988 AND BENDING METHOD FOR THE PRODUCTION OF PIPE PIPES |
AT01925482T ATE286440T1 (en) | 2000-03-23 | 2001-03-16 | USE OF TITANIUM ZINC PIPES ACCORDING TO EN 988 AND BENDING PROCESS FOR PRODUCING TUBE ELBOW |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10014519A DE10014519A1 (en) | 2000-03-23 | 2000-03-23 | Use of pipes made of titanium zinc according to EN 988 and bending processes for the production of pipe bends |
DE10014519.1 | 2000-03-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001070426A2 true WO2001070426A2 (en) | 2001-09-27 |
WO2001070426A3 WO2001070426A3 (en) | 2002-03-14 |
Family
ID=7636105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/003060 WO2001070426A2 (en) | 2000-03-23 | 2001-03-16 | Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1265719B1 (en) |
AT (1) | ATE286440T1 (en) |
AU (1) | AU2001252217A1 (en) |
DE (2) | DE10014519A1 (en) |
ES (1) | ES2234831T3 (en) |
WO (1) | WO2001070426A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6916546B2 (en) * | 2001-11-16 | 2005-07-12 | Rheinzink Gmbh & Co. Kg | Method for the production of dark protective layers on flat objects made from titanium zinc |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2957229A (en) * | 1954-12-23 | 1960-10-25 | Allan W Beatty | Method of fabricating curved fittings |
DE3709784A1 (en) * | 1987-03-25 | 1988-10-06 | Rheinzink Gmbh | METHOD AND DEVICE FOR PRODUCING THIN-WALLED TUBES |
DE19633423A1 (en) * | 1996-08-20 | 1998-02-26 | Rheinzink Gmbh | Process for the production of thin-walled pipes |
US6009737A (en) * | 1997-07-17 | 2000-01-04 | Arvin Industries, Inc. | Tube bender |
-
2000
- 2000-03-23 DE DE10014519A patent/DE10014519A1/en not_active Withdrawn
-
2001
- 2001-03-16 AU AU2001252217A patent/AU2001252217A1/en not_active Abandoned
- 2001-03-16 ES ES01925482T patent/ES2234831T3/en not_active Expired - Lifetime
- 2001-03-16 AT AT01925482T patent/ATE286440T1/en active
- 2001-03-16 EP EP01925482A patent/EP1265719B1/en not_active Expired - Lifetime
- 2001-03-16 WO PCT/EP2001/003060 patent/WO2001070426A2/en active IP Right Grant
- 2001-03-16 DE DE50105029T patent/DE50105029D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6916546B2 (en) * | 2001-11-16 | 2005-07-12 | Rheinzink Gmbh & Co. Kg | Method for the production of dark protective layers on flat objects made from titanium zinc |
Also Published As
Publication number | Publication date |
---|---|
DE10014519A1 (en) | 2001-10-11 |
EP1265719B1 (en) | 2005-01-05 |
AU2001252217A1 (en) | 2001-10-03 |
WO2001070426A3 (en) | 2002-03-14 |
DE50105029D1 (en) | 2005-02-10 |
ATE286440T1 (en) | 2005-01-15 |
EP1265719A2 (en) | 2002-12-18 |
ES2234831T3 (en) | 2005-07-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102008061441B4 (en) | Rohraufweitvorrichtung | |
DE3135966A1 (en) | MULTI-LAYER SCREW SEAM PIPE AND METHOD FOR PRODUCING MULTI-LAYER SCREW SEAL PIPES | |
DE2657269A1 (en) | PROCESS FOR INCREASING THE TENSILE STRENGTH OF STEEL PIPES | |
DE2708898C3 (en) | Method and device for connecting plastic pipes by welding | |
DE102014108145A1 (en) | Method for producing a multi-layered large pipe | |
DE1177800B (en) | Method and device for producing a flange at the end of a pipe made of thermoplastic material | |
DE3733058A1 (en) | METHOD FOR PRODUCING THIN-WALLED METAL TUBES | |
DE102011000845B4 (en) | Method for bending and axial upsetting of a pipe and device for this purpose | |
DE2943960A1 (en) | METHOD FOR SHAPING ELBOW AND DEVICE FOR IMPLEMENTING THE METHOD | |
DE102009017571A1 (en) | Pipe bends producing method, involves forming molding surface of one press tool part by end portions of sheet material during locking of press tool parts until final shape of pipe bend results | |
EP1265719B1 (en) | Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends | |
DE4032424C2 (en) | Method and device for producing folded pipes | |
DE102009030152A1 (en) | Method and device for process monitoring and process control when expanding steel UOE pipes | |
DE102011101664A1 (en) | Method for inwardly/outwardly everting end of e.g. rectangular pipe, involves re-generating bulge by removing mold sleeve from pipe after calibration process, and supporting pipe end by mandrel, where shape of mandrel corresponds to contour | |
DE2337500A1 (en) | METHOD OF MAKING A HOLLOW REVOLVING BODY OR A CONTAINER | |
DE620758C (en) | Process for the production of pressurized gas containers | |
DE202015102642U1 (en) | Extruded aluminum tube with a flat corner radius | |
DE2153937B2 (en) | Device for processing and calibrating the inner and outer surface of a pipe | |
AT27784B (en) | Method and device for the production of pipes with an overlap seam, as well as device for the production of pipes with a butt joint from pipes with an overlap seam. | |
EP0615794B1 (en) | Method to produce a plug chamber for cascade drawing of tubes and device for carrying out the method | |
DE2521144C2 (en) | Method and device for drawing pipes | |
DE630194C (en) | Method and device for expanding hollow bodies | |
DE1261102B (en) | Method and device for the manufacture of pipe bends with a cross section that tapers evenly from one end to the other | |
DE10358845B4 (en) | Method for producing short bent pipe sections | |
DE310437C (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AU BG BR CA CN CZ HU ID IL IN JP KR MX NO NZ PL RO RU US YU ZA |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AU BG BR CA CN CZ HU ID IL IN JP KR MX NO NZ PL RO RU US YU ZA |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001925482 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2001925482 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2001925482 Country of ref document: EP |