EP1125654A2 - Mechanischer Rohrexpander - Google Patents
Mechanischer Rohrexpander Download PDFInfo
- Publication number
- EP1125654A2 EP1125654A2 EP01250010A EP01250010A EP1125654A2 EP 1125654 A2 EP1125654 A2 EP 1125654A2 EP 01250010 A EP01250010 A EP 01250010A EP 01250010 A EP01250010 A EP 01250010A EP 1125654 A2 EP1125654 A2 EP 1125654A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- segments
- polygon
- wear
- pipe expander
- mechanical pipe
- 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.)
- Withdrawn
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
Definitions
- the invention relates to a mechanical tube expander with a pyramid polygon and arranged on the lateral surfaces of the segments by an axial displacement of the Polygons are radially movable relative to the segments.
- Such expanders are used in the manufacture of welded large steel pipes used. After welding, the pipes become small in diameter expanded to calibrate the inside diameter, to round the tubes and around the To increase the yield strength by cold forming. Since it is partly made of pipe materials higher strength and the pipes can be thick-walled occur when expanding extremely high forces. For this reason, the pipes are up to 18 m long gradually upgraded.
- DE-PS 22 64 207 shows a suitable expander.
- the actual expander head consists of a pyramid polygon, on the lateral surfaces of which individual segments are arranged. By moving the polygon relative to the segments, you can are moved radially, so that the diameter of the expander head increases or reduced.
- the object of the invention is therefore to provide a mechanical pipe expander in which the wear on the relatively movable surfaces is reduced and on use of lubricating oil in these areas can be dispensed with.
- This wear layer preferably consists of a carbon fiber composite material, the Matrix consists of a polymer.
- Graphite powder is preferably added to the matrix, in such an amount that there is a friction factor of> 0.10 ⁇ 0.15 for the wear lining.
- Such a wear covering can also be on the end faces of the segments to be appropriate.
- the use of the wear lining according to the invention has an advantage. If sets of wear pads of different thicknesses are kept ready, this can the diameter range over which the mechanical pipe expander can be used, be expanded significantly without changing the segments or the polygon be made yourself.
- Fig. 1 shows a simplified longitudinal section through a tube expander
- Fig. 2 shows a corresponding cross section.
- the tube expander 1 has a polygon 2 which can be displaced axially by means of a pull rod 6. Distributed over its circumference, segments 3 are arranged on the lateral surfaces. Between the mutually facing sliding surfaces of the segments 3 and the polygon 2, a wear layer 5 is provided in each case. An additional wear layer 5 is also present on the end face of each segment 3. In order to keep the wear pads 5 in their position, corresponding recesses can be provided on the underside of the segments 3. As is known, an axial displacement of the polygon 2 relative to the segments 3 moves them radially outward, so that the tube 4 can be expanded in this way.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Wie bekannt, werden durch eine axiale Verschiebung des Vielkantes 2 relativ zu den Segmenten 3 diese radial nach außen bewegt, so dass auf diese Weise ein Aufweiten des Rohres 4 möglich ist.
Claims (4)
- Mechanischen Rohrexpander mit einem pyramidischen Vielkant und auf dessen Mantelflächen angeordneten Segmenten, die durch eine axiale Verschiebung des Vielkant relativ zu den Segmenten radial bewegbar sind.
dadurch gekennzeichnet,
dass zwischen den Mantelflächen des Vielkantes (2) und den Segmenten (3) ein Verschleißbelag (5) angeordnet ist. - Mechanischer Rohrexpander nach Anspruch 1,
dadurch gekennzeichnet,
dass der Verschleißbelag (5) aus einem Kohlefaser-Verbundwerkstoff besteht, mit einer Matrix aus einem Polymer. - Mechanischer Rohrexpander nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass die Matrix mit Graphitpulver versetzt, und zwar in einer solchen Menge, dass sich ein Reibungsfaktor von >0,10 <0,15 für den Verschleißbelag ergibt. - Mechanischer Rohrexpander nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass zusätzlich Verschleißbeläge (5) auch an den Stirnseiten der Segmente (3) angeordnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10008688 | 2000-02-18 | ||
DE10008688A DE10008688C1 (de) | 2000-02-18 | 2000-02-18 | Mechanischer Rohrexpander |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1125654A2 true EP1125654A2 (de) | 2001-08-22 |
EP1125654A3 EP1125654A3 (de) | 2001-12-12 |
Family
ID=7632256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01250010A Withdrawn EP1125654A3 (de) | 2000-02-18 | 2001-01-08 | Mechanischer Rohrexpander |
Country Status (4)
Country | Link |
---|---|
US (1) | US20010020381A1 (de) |
EP (1) | EP1125654A3 (de) |
JP (1) | JP2001259763A (de) |
DE (1) | DE10008688C1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10147848A1 (de) * | 2001-08-13 | 2003-03-13 | Alcan Tech & Man Ag | Verfahren und Vorrichtung zum Kalibrieren eines Profils o. dgl. Körpers |
CN103447399A (zh) * | 2013-09-05 | 2013-12-18 | 无锡双友石化机械有限公司 | 扩径头润滑环油路系统 |
EP3170571B1 (de) | 2014-07-18 | 2020-09-02 | JFE Steel Corporation | Rohraufweiter |
DE102020213223A1 (de) | 2020-10-20 | 2022-04-21 | Sms Group Gmbh | Einrichtung zur Schmierung eines Formwerkzeugs sowie Verfahren zur Schmierung |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2004217540B2 (en) * | 2003-02-28 | 2008-09-04 | Baker Hughes Incorporated | Compliant swage |
DE10325974B3 (de) * | 2003-06-07 | 2004-10-21 | Daimlerchrysler Ag | Dichtungsträger aus Faserverbundwerkstoff |
DE102012013709B3 (de) * | 2012-07-11 | 2014-01-02 | Sms Meer Gmbh | Schmiervorrichtung zur Versorgung einesWerkzeugs mit Schmiermittel |
CN103706676A (zh) * | 2012-09-30 | 2014-04-09 | 天太·郭元焜 | 撑开式变形管口修复机 |
JP2018172879A (ja) * | 2017-03-31 | 2018-11-08 | 新日鐵住金株式会社 | 地盤補強工法および地盤補強用鋼管 |
DE102017217841A1 (de) * | 2017-10-06 | 2019-04-11 | Volkswagen Aktiengesellschaft | Werkzeug zum Kaltumformen von verzinkten Stahlblechen sowie Verfahren zum Herstellen eines Werkzeugs zum Kaltumformen von verzinkten Stahlblechen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4212186A (en) * | 1978-10-25 | 1980-07-15 | Blattler Joseph F | Pipe expander |
DE2924437A1 (de) * | 1979-06-14 | 1980-12-18 | Mannesmann Ag | Vorrichtung zum aufweiten und kalibrieren von geschweissten stahlrohren |
DE3939356A1 (de) * | 1989-11-24 | 1991-05-29 | Mannesmann Ag | Mechanischer rohrexpander |
US5288792A (en) * | 1990-01-28 | 1994-02-22 | Chemson Polymer-Additive Gesellschaft | Additive for friction lining mixtures |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246086A (en) * | 1940-01-08 | 1941-06-17 | Du Pont | Bearing |
US2828538A (en) * | 1956-11-15 | 1958-04-01 | American Welding Mfg Co | Unit process of sizing and flattening metal rings |
US3583200A (en) * | 1969-05-19 | 1971-06-08 | Grotnes Machine Works Inc | Expanding head and improved seal therefor |
DE2264207C2 (de) * | 1972-12-28 | 1974-08-01 | Mannesmann-Meer Ag, 4050 Moenchengladbach | Mechanischer Rohrexpander mit Höhenverstellung des Werkzeugkopfes |
DE2611702C3 (de) * | 1976-03-18 | 1979-01-18 | Mannesmann Ag, 4000 Duesseldorf | Mechanischer Rohrexpander |
MY105557A (en) * | 1989-05-12 | 1994-10-31 | Mitsui Petrochemical Ind | Thermoplastic resin composition and use thereof. |
US5704244A (en) * | 1995-06-07 | 1998-01-06 | American National Can Company | Apparatus for reshaping a container |
-
2000
- 2000-02-18 DE DE10008688A patent/DE10008688C1/de not_active Expired - Lifetime
-
2001
- 2001-01-08 EP EP01250010A patent/EP1125654A3/de not_active Withdrawn
- 2001-02-14 US US09/783,647 patent/US20010020381A1/en not_active Abandoned
- 2001-02-16 JP JP2001039644A patent/JP2001259763A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4212186A (en) * | 1978-10-25 | 1980-07-15 | Blattler Joseph F | Pipe expander |
DE2924437A1 (de) * | 1979-06-14 | 1980-12-18 | Mannesmann Ag | Vorrichtung zum aufweiten und kalibrieren von geschweissten stahlrohren |
DE3939356A1 (de) * | 1989-11-24 | 1991-05-29 | Mannesmann Ag | Mechanischer rohrexpander |
US5288792A (en) * | 1990-01-28 | 1994-02-22 | Chemson Polymer-Additive Gesellschaft | Additive for friction lining mixtures |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10147848A1 (de) * | 2001-08-13 | 2003-03-13 | Alcan Tech & Man Ag | Verfahren und Vorrichtung zum Kalibrieren eines Profils o. dgl. Körpers |
CN103447399A (zh) * | 2013-09-05 | 2013-12-18 | 无锡双友石化机械有限公司 | 扩径头润滑环油路系统 |
EP3170571B1 (de) | 2014-07-18 | 2020-09-02 | JFE Steel Corporation | Rohraufweiter |
DE102020213223A1 (de) | 2020-10-20 | 2022-04-21 | Sms Group Gmbh | Einrichtung zur Schmierung eines Formwerkzeugs sowie Verfahren zur Schmierung |
WO2022084113A1 (de) | 2020-10-20 | 2022-04-28 | Sms Group Gmbh | Einrichtung zur schmierung eines formwerkzeugs sowie verfahren zur schmierung |
Also Published As
Publication number | Publication date |
---|---|
EP1125654A3 (de) | 2001-12-12 |
JP2001259763A (ja) | 2001-09-25 |
US20010020381A1 (en) | 2001-09-13 |
DE10008688C1 (de) | 2001-02-08 |
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