RU2001108551A - METHOD FOR MINIMIZING THICKEN ENDS WHEN ROLLING PIPES IN A REDUCING-STRETCHING MACHINE - Google Patents

METHOD FOR MINIMIZING THICKEN ENDS WHEN ROLLING PIPES IN A REDUCING-STRETCHING MACHINE

Info

Publication number
RU2001108551A
RU2001108551A RU2001108551/02A RU2001108551A RU2001108551A RU 2001108551 A RU2001108551 A RU 2001108551A RU 2001108551/02 A RU2001108551/02 A RU 2001108551/02A RU 2001108551 A RU2001108551 A RU 2001108551A RU 2001108551 A RU2001108551 A RU 2001108551A
Authority
RU
Russia
Prior art keywords
minimizing
thicken
reducing
stretching machine
pipe
Prior art date
Application number
RU2001108551/02A
Other languages
Russian (ru)
Other versions
RU2224607C2 (en
Inventor
Ханс Иоахим ПЕЛЕ
Original Assignee
Смс Демаг Аг
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
Priority claimed from DE19840864A external-priority patent/DE19840864C1/en
Application filed by Смс Демаг Аг filed Critical Смс Демаг Аг
Publication of RU2001108551A publication Critical patent/RU2001108551A/en
Application granted granted Critical
Publication of RU2224607C2 publication Critical patent/RU2224607C2/en

Links

Claims (1)

Способ минимизации утолщенных концов труб в редукционно-растяжном стане путем временного изменения крутящего момента отдельных приводных прокатных клетей при прохождении начала трубы, соответственно, конца трубы через редукционно-растяжной стан так что, концы трубы прокатываются с большими, чем стационарные отношениями скоростей вращения валков, отличающийся тем, что между стационарными и повышенными отношениями скоростей вращения устанавливают меньшие, чем стационарные отношения скоростей вращения.A method of minimizing thickened pipe ends in a reduction-stretching mill by temporarily changing the torque of individual drive rolling stands while passing the beginning of the pipe, respectively, of the pipe end through the reduction-stretching mill so that the ends of the pipe are rolled with greater than stationary ratios of the rotation speeds of the rolls, characterized the fact that between stationary and increased ratios of speeds of rotation establish lower than stationary ratios of speeds of rotation.
RU2001108551/02A 1998-08-31 1999-05-11 Method for minimizing thickened end portions at rolling tubes in stretch - reducing mill RU2224607C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19840864.1 1998-08-31
DE19840864A DE19840864C1 (en) 1998-08-31 1998-08-31 Method for reducing the length of thickened ends when rolling pipes in a stretch reduction rolling mill

Publications (2)

Publication Number Publication Date
RU2001108551A true RU2001108551A (en) 2003-03-27
RU2224607C2 RU2224607C2 (en) 2004-02-27

Family

ID=7880141

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001108551/02A RU2224607C2 (en) 1998-08-31 1999-05-11 Method for minimizing thickened end portions at rolling tubes in stretch - reducing mill

Country Status (12)

Country Link
US (1) US6526792B1 (en)
EP (1) EP1109634B1 (en)
JP (1) JP3794923B2 (en)
CN (1) CN1144630C (en)
AT (1) ATE228400T1 (en)
AU (1) AU5147599A (en)
CZ (1) CZ300083B6 (en)
DE (1) DE19840864C1 (en)
ES (1) ES2183589T3 (en)
RU (1) RU2224607C2 (en)
UA (1) UA67792C2 (en)
WO (1) WO2000012237A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10332221B4 (en) * 2003-07-16 2006-05-11 Benteler Stahl/Rohr Gmbh Method for minimizing thickened ends during rolling of rolled products
CN100455369C (en) * 2005-06-30 2009-01-28 宝山钢铁股份有限公司 Feed forward control method for wall thickness of tension reducing machine
DE102017220750A1 (en) 2017-11-21 2019-05-23 Sms Group Gmbh Device for controlling a draft-reducing mill
CN108555033B (en) * 2018-04-09 2019-11-12 北京科技大学 Steel pipe thickens the control method of segment length minimization when a kind of stretch-reducing mill rolls
CN109047335A (en) * 2018-06-11 2018-12-21 黑龙江建龙化工有限公司 Steel pipe sizes outer diameter control method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652543A1 (en) * 1968-03-02 1972-02-03 Demag Ag Stretch-reducing mill
US4002048A (en) * 1975-12-19 1977-01-11 Aetna-Standard Engineering Company Method of stretch reducing of tubular stock
DE3028211C2 (en) * 1980-07-25 1986-10-16 Kocks Technik Gmbh & Co, 4010 Hilden Rolling mill for reducing the stretching of tubes
DE3601693A1 (en) * 1986-01-17 1987-07-23 Mannesmann Ag ROLLING MILL FOR TUBE REDUCTION
US4984444A (en) * 1989-04-26 1991-01-15 Franceschina Louis E Method of reducing tubular products
IT1237199B (en) * 1989-11-17 1993-05-26 Ettore Cernuschi STEEL REDUCER REDUCER FOR PIPES.
RU2015755C1 (en) * 1991-05-23 1994-07-15 Всероссийский научно-исследовательский, проектно-конструкторский и технологический институт кабельной промышленности Method for cold reduction in cross-sectional area of welded pipe products
JP3316979B2 (en) * 1992-11-30 2002-08-19 住友金属工業株式会社 Pipe rolling method and apparatus used for its implementation
DE4446659C1 (en) * 1994-12-16 1996-07-25 Mannesmann Ag Working method for producing pipe in drawing roller

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