EP2318159A1 - Method for producing a seamless steel pipe and rolling mill for performing the method - Google Patents
Method for producing a seamless steel pipe and rolling mill for performing the methodInfo
- Publication number
- EP2318159A1 EP2318159A1 EP09777167A EP09777167A EP2318159A1 EP 2318159 A1 EP2318159 A1 EP 2318159A1 EP 09777167 A EP09777167 A EP 09777167A EP 09777167 A EP09777167 A EP 09777167A EP 2318159 A1 EP2318159 A1 EP 2318159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling mill
- mandrel
- dornstangenhalte
- rolling
- tube blank
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
- 239000010959 steel Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000007858 starting material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 241000219745 Lupinus Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
-
- 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
- B21C45/00—Separating mandrels from work or vice versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
- B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
Definitions
- the invention relates to a method for producing a seamless steel tube in a continuous rolling process, in which first material is formed in a piercing mill to a hollow block, which is then rolled in a Gridge- sprüstigen continuous rolling on a previously threaded mandrel rod to a tube blank, wherein the Hollow block receiving, detected by a arranged on the inlet side Dornstangenhalte- and traversing mandrel rod fed to the continuous rolling mill and after the tube blank has been rolled on a continuous rolling mill downstream Ausziehwalzwerk of the mandrel bar is transported back to the inlet side. Furthermore, the invention relates to a rolling mill for carrying out the method.
- Such a method and rolling mill for the production of seamless tubes in the continuous rolling process (continuous tube rolling process) with a continuous rolling mill also called Kontkontalzwerk, for example, by DE-Z "Berg- and Wilsontenmännische Monatshefte 130 (1985), No. 7, pages 205-211
- the raw material is mostly rolled round steel, mainly round extruded up to 350 mm diameter, which is brought to rolling temperature in lengths of up to 5 m in a rotary hearth furnace, followed by punching of the solid block on a piercing mill, usually formed
- the hollow block produced in this way is then rolled out in the same heat in the continuous rolling mill over a mandrel bar to form a lupine.
- each other lying rolling stands which are each arranged rotated against each other, for example, by 90 °.
- the hollow block with the mandrel rod threaded therein is driven into position by an entry-side mandrel bar holding or moving device, commonly referred to as a retainer, and then pushed into the continuous rolling mill.
- a retainer an entry-side mandrel bar holding or moving device, commonly referred to as a retainer
- the hollow block is detected by the rollers and rolled out by the skeleton from frame to frame becoming smaller rolling caliber on the mandrel.
- the mandrel is traced by means of Dornstangenhalte- and traversing with controlled during rolling, semi or fully controlled mandrel rod speed.
- the mandrel bar is released just prior to rolling so that the mandrel and billet leave the rolling mill in the rolling direction and are fed to a stripper where the mandrel bar is pulled out.
- the billet is withdrawn from the mandrel bar in an expansion mill downstream of the continuous rolling mill. The mandrel is then moved back to the inlet side.
- a rolling mill with a multi-stand continuous rolling mill and a multi-stand pull-out mill is known in which a pipe to be rolled is rolled out by means of a mandrel bar held in front of the continuous rolling mill.
- the invention has for its object to provide a method and a rolling mill of the generic type with which to avoid the disadvantages mentioned and can be achieved with constant product quality especially at low temperature drop of the tube blanks high volumes.
- the Ausziehwalzwerk Due to the inventive discharge of the mandrel bar between the continuous and Ausziehwalzwerk, preferably orthogonal to the local Dornstangenhalte- and traversing, but optionally also in line through the Ausziehwalzwerk, the Ausziehwalzwerk with solid caliber, without rapid roller opening, rollers, because the rollers do not need more to be employed on the thicker in the thin wall region relative to the tube blank dimension or the larger diameter of the retained mandrel.
- the mandrel bar during rolling in the continuous rolling with retention effect controlled moves in the rolling direction and continuously pulled out on entry into the Ausziehwalzwerk in line.
- the object is achieved by a rolling mill according to the preamble of claim 5, in which a further Dornstangenhalte- and traversing is arranged in line between the continuous rolling mill and the Ausziehwalzwerk.
- the invention provides that the Dornstangenhalte- and traversers are formed with two spaced Dornstangengreifschn and the shafts of the mandrel bars with two Ankupplungsköpfen, one of which is provided at the rear end seen in the rolling direction and the other spaced apart in the rolling direction forward.
- the carrying traverses of at least the second, downstream Dornstangenhalte- and traversing device are designed as rollers. This makes it possible to compensate for a speed difference between the chain and the tube blank.
- a continuous rolling mill 1 which here consists of six successive rolling stands 2.1 to 2.n, and this in the rolling direction 3 subsequent Ausziehwalzwerk 4 and an inlet side Dornstangenhalte- and traversing device 5 arranged in front of the first roll stand 2.1 and a second Dornstangenhalte- and traversing 6 provided in line between the last stand 2.n de Kontiwalzwerks 1 and the Ausziehwalzwerk 4.
- the Dornstangenhalte- and traversers 5, 6 are designed as chain wheels 7 guided chain retainer.
- a mandrel 10 is threaded into the hollow block 8, as shown in the flowchart I to IX Dornstangenfahrweise under I, and in this hollow block mandrel bar combination 8, 10 spent on the inlet side Dornstangenhalte- and traversing 5.
- a first, and also a second, seen in the rolling direction 3 further forward Ankupplungskopf 11b having mandrel 10 is detected by a Domstangengreifsch 12 of the inlet side Dornstangenhalte- and traversing device 5, as shown in the figure above and can be found in II.
- the captured by the gripping means 12 mandrel 10 with the received hollow block 8 is then transported in the sequence according to III up to the first rolling stand 2.1 of the continuous rolling mill 1.
- the hollow block 8 is detected there by the rollers of the first rolling mill 2.1 and then rolled over the skeletons to 2.n (see IV) to the tube blank 9.
- the mandrel 10 of the inlet side Dornstangenhalte- and traversing 5 is continuously moved in the rolling direction 3 with a targeted controlled speed.
- the dome rod 10 is held by the gripping means 13 until the tube blank 9 is rolled over the Ausziehwalzwerk 4 of the Dömstange 10 (see Pos. VIII).
- the mandrel bar 10 is free of the tube blank 9, it is discharged laterally or orthogonally as indicated by arrow 14 and stands in the mandrel bar. cycle for a re-rolling process.
- the threading of a mandrel 10 in a hollow block 8 for a follow-rolling with positioning of the hollow block-mandrel bar combination 8, 10 already be carried out at a time at which the tube blank 9 of the previous rolling process still from the Mandrel 10 is rolled off.
- the Dornstangenhalte- and traversers 5, 6 with a second mandrel bar gripping means 12 'and 13' are formed.
- the inlet-side Dornstangenhalte- and traversing 5 is provided with Tragetraversen 15, while the chains arranged between the Kontiwalzwerk 1 and the Ausziehwalztechnik 4 Dornstangenhalte- and process means are equipped with rollers 16 to compensate for the speed difference between the chain and tube 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810039454 DE102008039454B4 (en) | 2008-08-25 | 2008-08-25 | Method for producing a seamless steel tube and rolling mill for carrying out the method |
PCT/EP2009/005093 WO2010025790A1 (en) | 2008-08-25 | 2009-07-14 | Method for producing a seamless steel pipe and rolling mill for performing the method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2318159A1 true EP2318159A1 (en) | 2011-05-11 |
EP2318159B1 EP2318159B1 (en) | 2013-09-18 |
Family
ID=41531854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09777167.9A Not-in-force EP2318159B1 (en) | 2008-08-25 | 2009-07-14 | Method for producing a seamless steel pipe and rolling mill for performing the method |
Country Status (7)
Country | Link |
---|---|
US (1) | US8904839B2 (en) |
EP (1) | EP2318159B1 (en) |
JP (1) | JP5303566B2 (en) |
CN (1) | CN101842170B (en) |
DE (1) | DE102008039454B4 (en) |
ES (1) | ES2436304T3 (en) |
WO (1) | WO2010025790A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1395593B1 (en) † | 2009-06-29 | 2012-10-16 | Danieli Off Mecc | LAMINATION PROCEDURE AND RELATIVE LONGITUDINAL MULTI CAGE LAMINATE SHEET OF CONTINUED AND CABLE TYPES FOR CABLE BODIES |
ITMI20110372A1 (en) * | 2011-03-10 | 2012-09-11 | Danieli Off Mecc | LAMINATION PROCESS FOR MULTI-BUCKLE LAMINATE TUBES |
DE102013002268B4 (en) | 2013-02-12 | 2018-04-05 | Sms Group Gmbh | Rolling plant or process |
DE102013211059A1 (en) | 2013-06-13 | 2014-12-18 | Sms Meer Gmbh | Hot tool, in particular rolling rod |
RU2017106032A (en) * | 2014-07-31 | 2018-08-28 | Смс Иннсе С.П.А. | COMBINED DEVICE FOR ROLLING SEAMLESS PIPES |
US20170165729A1 (en) * | 2014-07-31 | 2017-06-15 | Sms Innse S.P.A. | Compact plant for rolling seamless tubes |
CN105964696A (en) * | 2016-06-27 | 2016-09-28 | 烟台宝钢钢管有限责任公司 | Tandem rolling method for pre-straightening of tail of steel tube and special device |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1427915B2 (en) * | 1962-11-29 | 1973-01-11 | Fa. Friedrich Kocks, 4000 Düsseldorf | ROLLING MILL FOR MANUFACTURING SEAMLESS PIPES |
US4037449A (en) * | 1976-07-30 | 1977-07-26 | Aetna-Standard Engineering Company | Continuous flow plug mill system |
DE2811801A1 (en) | 1978-03-15 | 1979-09-20 | Mannesmann Ag | PROCESS AND EQUIPMENT FOR HOT ROLLING SEAMLESS TUBES |
JPS607565B2 (en) * | 1979-12-29 | 1985-02-26 | 新日本製鐵株式会社 | Tube rolling method |
DE3136381A1 (en) * | 1981-09-14 | 1983-04-14 | Kocks Technik Gmbh & Co, 4010 Hilden | ROLLING MILL FOR THE PRODUCTION OF SEAMLESS TUBES |
JPS5874206A (en) * | 1981-10-27 | 1983-05-04 | Sumitomo Metal Ind Ltd | Rolling installation for metallic pipe |
JPS61140311A (en) * | 1984-12-11 | 1986-06-27 | Sumitomo Metal Ind Ltd | Inlet-side table device in pipe rolling installation |
JPH07102370B2 (en) * | 1989-09-28 | 1995-11-08 | 日本鋼管株式会社 | Method for manufacturing seamless steel pipe and bar drawing apparatus |
JPH04168221A (en) * | 1990-11-01 | 1992-06-16 | Kawasaki Steel Corp | Manufacture of austenitic stainless seamless steel tube |
CN1062311A (en) * | 1990-12-15 | 1992-07-01 | 冶金工业部重庆钢铁设计研究院 | Limiting and clamping device of mandrel for inclined rolling on tube-rolling mill |
JP4168221B2 (en) * | 1999-09-06 | 2008-10-22 | 株式会社島津製作所 | Body-mounted display system |
US20020063145A1 (en) * | 2000-11-29 | 2002-05-30 | Lotspaih Steven R. | Reinforced hydroform tube |
BR0306683B1 (en) | 2002-01-09 | 2011-01-11 | rolling process and installation for the production of seamless wire, rod or tube. | |
CN1293953C (en) * | 2004-03-25 | 2007-01-10 | 烟台鲁宝钢管有限责任公司 | Feed-through rod locating method and apparatus |
DE102005052178B4 (en) * | 2004-10-25 | 2008-06-19 | V&M Deutschland Gmbh | Method for producing a seamless hot-worked steel tube |
EP1854561B1 (en) * | 2005-02-22 | 2011-08-24 | Sumitomo Metal Industries, Ltd. | Process for producing seamless pipe |
DE102005044777A1 (en) * | 2005-09-20 | 2007-03-29 | Sms Meer Gmbh | Method and rolling mill for producing a seamless pipe |
-
2008
- 2008-08-25 DE DE200810039454 patent/DE102008039454B4/en not_active Expired - Fee Related
-
2009
- 2009-07-14 JP JP2010531551A patent/JP5303566B2/en not_active Expired - Fee Related
- 2009-07-14 CN CN200980100866.7A patent/CN101842170B/en not_active Expired - Fee Related
- 2009-07-14 EP EP09777167.9A patent/EP2318159B1/en not_active Not-in-force
- 2009-07-14 WO PCT/EP2009/005093 patent/WO2010025790A1/en active Application Filing
- 2009-07-14 ES ES09777167T patent/ES2436304T3/en active Active
- 2009-07-14 US US12/679,057 patent/US8904839B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010025790A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8904839B2 (en) | 2014-12-09 |
EP2318159B1 (en) | 2013-09-18 |
ES2436304T3 (en) | 2013-12-30 |
WO2010025790A1 (en) | 2010-03-11 |
JP2011500335A (en) | 2011-01-06 |
DE102008039454A1 (en) | 2010-03-04 |
JP5303566B2 (en) | 2013-10-02 |
CN101842170B (en) | 2012-08-15 |
CN101842170A (en) | 2010-09-22 |
DE102008039454B4 (en) | 2011-01-27 |
US20100212387A1 (en) | 2010-08-26 |
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