EP0128112A3 - Method of improving the tolerances of outside diameter and of wall thickness during size-rolling and stretch-reducing of roughly pierced tube blanks - Google Patents

Method of improving the tolerances of outside diameter and of wall thickness during size-rolling and stretch-reducing of roughly pierced tube blanks Download PDF

Info

Publication number
EP0128112A3
EP0128112A3 EP84730038A EP84730038A EP0128112A3 EP 0128112 A3 EP0128112 A3 EP 0128112A3 EP 84730038 A EP84730038 A EP 84730038A EP 84730038 A EP84730038 A EP 84730038A EP 0128112 A3 EP0128112 A3 EP 0128112A3
Authority
EP
European Patent Office
Prior art keywords
rolling
wall thickness
improving
tolerances
temperature
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Withdrawn
Application number
EP84730038A
Other languages
German (de)
French (fr)
Other versions
EP0128112A2 (en
Inventor
Walter Vom Dorp
Heinrich Steinbrecher
Karl Heinz Häusler
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0128112A2 publication Critical patent/EP0128112A2/en
Publication of EP0128112A3 publication Critical patent/EP0128112A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zum Verbessern der Durchmesser- und Wanddickentoleranzen beim Walzen einer Rohrluppe in einem Maßwalzwerk oder Streckreduzierwalz­ werk. Um ein Verfahren zu schaffen aus unterschiedlichen Temperaturen der Rohrluppe resultierende Durchmesser- oder Wanddickenunterschiede der fertigen Rohre zu ver­ meiden wird vorgeschlagen, daß die Temperatur der Luppe vor der Einführung in das Walzwerk über ihre Länge gemes­ sen und die Walzgeschwindigkeit durch Regelung der Drehzahl in Abhängigkeit vom Temperaturgefälle derart eingestellt wird, daß beim Walzen eine dem gemessenen Temperaturgefälle entsprechend entgegengesetzte Tem­ peraturerhöhung bzw. -erniedrigung der Rohrluppe erfolgt. The invention relates to a method for improving the Diameter and wall thickness tolerances when rolling one Tube blank in a sizing mill or stretch reducing roll plant. To create a process from different Temperature of the tube blank resulting diameter or wall thickness differences of the finished pipes avoid the suggestion that the temperature of the slug measured over its length before being introduced into the rolling mill sen and the rolling speed by regulating the Speed depending on the temperature gradient is set that during the rolling one the measured Temperature gradients corresponding to opposite temp temperature increase or decrease of the tube blank takes place.

EP84730038A 1983-05-26 1984-04-16 Method of improving the tolerances of outside diameter and of wall thickness during size-rolling and stretch-reducing of roughly pierced tube blanks Withdrawn EP0128112A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833319383 DE3319383A1 (en) 1983-05-26 1983-05-26 METHOD FOR IMPROVING THE EXTERNAL DIAMETER AND WALL THICKNESS TOLERANCES IN MEASURING ROLLS AND REDUCTION OF TUBE TUBE
DE3319383 1983-05-26

Publications (2)

Publication Number Publication Date
EP0128112A2 EP0128112A2 (en) 1984-12-12
EP0128112A3 true EP0128112A3 (en) 1985-04-17

Family

ID=6200098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730038A Withdrawn EP0128112A3 (en) 1983-05-26 1984-04-16 Method of improving the tolerances of outside diameter and of wall thickness during size-rolling and stretch-reducing of roughly pierced tube blanks

Country Status (3)

Country Link
EP (1) EP0128112A3 (en)
JP (1) JPS59220204A (en)
DE (1) DE3319383A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039741B4 (en) * 1990-12-10 2005-03-10 Sms Demag Ag Method and device for rolling pipes, in particular in stretch-reducing, pilgering or continuous rolling mills
DE4241188A1 (en) * 1992-12-03 1994-06-09 Mannesmann Ag Control of extension of tubes during rolling - by measuring of internal temp. and use as control for planning rolling conditions
ITTV20020135A1 (en) 2002-11-12 2004-05-13 Benetton Spa ADJUSTMENT DEVICE, PARTICULARLY OF THE LENGTH OF A SHOE.
CN101972776A (en) * 2010-11-04 2011-02-16 胡顺珍 Hot rolling production process of automatic tube rolling mill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411332A (en) * 1966-11-10 1968-11-19 Westinghouse Electric Corp Temperature control apparatus and method for operating a reduction rolling mill
DE1293114B (en) * 1962-08-24 1969-04-24 United Eng Foundry Co Process for influencing the rolling temperature during the finish rolling of a hot strip exhibiting temperature which decreases over its length

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1293114B (en) * 1962-08-24 1969-04-24 United Eng Foundry Co Process for influencing the rolling temperature during the finish rolling of a hot strip exhibiting temperature which decreases over its length
US3411332A (en) * 1966-11-10 1968-11-19 Westinghouse Electric Corp Temperature control apparatus and method for operating a reduction rolling mill

Also Published As

Publication number Publication date
DE3319383A1 (en) 1984-11-29
EP0128112A2 (en) 1984-12-12
JPS59220204A (en) 1984-12-11

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): FR GB IT SE

17P Request for examination filed

Effective date: 19840630

R17P Request for examination filed (corrected)

Effective date: 19841030

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): FR GB IT SE

17Q First examination report despatched

Effective date: 19860305

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19860826

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAEUSLER, KARL HEINZ

Inventor name: VOM DORP, WALTER

Inventor name: STEINBRECHER, HEINRICH