EP0079295B1 - Verfahren und Vorrichtung zum Herstellen von Rohren in einem Kaltwalzwerk - Google Patents

Verfahren und Vorrichtung zum Herstellen von Rohren in einem Kaltwalzwerk Download PDF

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Publication number
EP0079295B1
EP0079295B1 EP82730131A EP82730131A EP0079295B1 EP 0079295 B1 EP0079295 B1 EP 0079295B1 EP 82730131 A EP82730131 A EP 82730131A EP 82730131 A EP82730131 A EP 82730131A EP 0079295 B1 EP0079295 B1 EP 0079295B1
Authority
EP
European Patent Office
Prior art keywords
billet
feed
rolling mill
cold pilger
mandrel
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.)
Expired
Application number
EP82730131A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0079295A1 (de
Inventor
Klaus Rehag
Josef Gerretz
Fritz Dr. Ing. Zeunert
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
Priority to AT82730131T priority Critical patent/ATE15979T1/de
Publication of EP0079295A1 publication Critical patent/EP0079295A1/de
Application granted granted Critical
Publication of EP0079295B1 publication Critical patent/EP0079295B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/04—Pilgrim-step feeding mechanisms

Definitions

  • the invention relates to a method and a device for producing pipes in a discontinuously operated cold pilger rolling mill according to the preamble of claim 1 and claim 2, respectively.
  • Such a method or this device for carrying out the method belongs to the prior art as described, for example, in DE-A-27 25 276.
  • Cold pilger rolling mills of this type in which the slug is inserted from the inlet side through the open mandrel abutment, are also referred to as so-called rear-loading. Since such rolling mills only have a mandrel abutment and a feed slide, which pushes the rolling material forward at a certain distance via, as a rule, two feed spindles, the maximum length of the slugs to be used is just as long as the entire feed slide path. This means that the feed spindles or their thread area is also as long as the maximum slab length.
  • the maximum roll length to be rolled is predetermined by the fact that the effective length of the feed spindle is limited to approximately 15 m for manufacturing reasons.
  • the mentioned slab length to be used was also fixed at approx. 15 m, which also resulted in the limitation of the known cold pilger rolling mills to a certain maximum slug weight. This was disadvantageous because larger pipe weights were required from various pipe manufacturers, in particular copper pipe manufacturers, which made it necessary to use much larger slugs, but was previously not achievable with the Kaitpilger rolling mills described.
  • the present invention is based on the object, while maintaining the construction elements used in cold pilger rolling mills of the type described at the beginning, to make these rolling mills usable for bobbin lengths which are greater than the effective maximum feed spindle length.
  • the feed carriage can be moved back to grasp the bobbin when the new bobbin is pushed into the rolling mill, with the rolling mill shut down or even while the rolling mill is running.
  • the present invention can meet the desire for extremely large bob weights with simple design means.
  • the loading time and feed carriage return time, calculated as a percentage of the rolling time of the billet, is more favorable than in the known rolling mills of this type, which could not exceed a maximum batch length of 15 meters.
  • cupped bed with stationary cupped and mandrel rod guides is provided.
  • the cupped bed is characterized by a very simple design. Overall, a surprisingly great advantage is achieved by slightly changing the rolling mill and maintaining conventional construction elements, which also enables considerable increases in production.
  • 1 denotes the roll stand of a cold pilger rolling mill, which is driven in a conventional manner via thrust crank drives with mass balancing 2.
  • a feed slide 4 is provided, which grips the tube blank 3 at its rear end and feeds it into the rolling mill 1 in the direction of the arrow 5.
  • the feed carriage 4 is driven via spindles 6, which are given their rotary movement via the feed gear 7.
  • the mandrel abutment is designated in which the mandrel rod is held at the end remote from the rolling mill.
  • the mandrel abutment 8 can be opened so that a new bobbin can be inserted through the mandrel abutment 8.
  • the section length to be used in the conventional cold pilger rolling mill shown in the exemplary embodiment results from the feed path of the feed carriage 4, which is determined by the length of the feed spindles 6. Since the length of the feed spindles 6 is limited to approximately 15 meters for manufacturing reasons, this also corresponds to the feed path the feed carriage 4 between the gear box 7 and the roll stand 1.
  • the length of the feed spindle is no longer a criterion for the slug length; the latter can be at least as long as the distance between the entry point into the rolling mill 1 and the mandrel abutment 8.
  • the bevel bed designated 10 between the rear feed gear 7 and the mandrel abutment 8 has fixed bevel and mandrel rod guides 11 and is very simple in its design. It can be seen in FIG. 2 that, in addition to the slag bed 10, the same construction elements are used that are also present in the prior art. Considerable increases in production can be achieved with little effort by the proposal of the invention in that the feed carriage 4 grasps the same die 3 several times and continues by a certain feed path in the direction of the arrow 5.
  • the hole 3 is inserted in the usual way through the opened rear mandrel abutment 8, whereby its length can be considerably greater than in the prior art, which is shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Lubricants (AREA)
  • Control Of Metal Rolling (AREA)
EP82730131A 1981-11-11 1982-10-21 Verfahren und Vorrichtung zum Herstellen von Rohren in einem Kaltwalzwerk Expired EP0079295B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82730131T ATE15979T1 (de) 1981-11-11 1982-10-21 Verfahren und vorrichtung zum herstellen von rohren in einem kaltwalzwerk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3145394 1981-11-11
DE19813145394 DE3145394A1 (de) 1981-11-11 1981-11-11 Verfahren und vorrichtung zum herstellen von rohren in einem kaltwalzwerk

Publications (2)

Publication Number Publication Date
EP0079295A1 EP0079295A1 (de) 1983-05-18
EP0079295B1 true EP0079295B1 (de) 1985-10-09

Family

ID=6146488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730131A Expired EP0079295B1 (de) 1981-11-11 1982-10-21 Verfahren und Vorrichtung zum Herstellen von Rohren in einem Kaltwalzwerk

Country Status (4)

Country Link
EP (1) EP0079295B1 (enrdf_load_stackoverflow)
JP (1) JPH0641002B2 (enrdf_load_stackoverflow)
AT (1) ATE15979T1 (enrdf_load_stackoverflow)
DE (1) DE3145394A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2376086C1 (ru) * 2008-07-22 2009-12-20 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Стан холодной прокатки труб
RU2385779C1 (ru) * 2009-05-14 2010-04-10 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Стан холодной прокатки труб
JP6479468B2 (ja) * 2014-12-26 2019-03-06 三菱重工業株式会社 蒸気タービン設備、船舶、および蒸気タービン設備の制御方法
DE102016106034A1 (de) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Herstellen eines Rohrs
DE102016106035A1 (de) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Herstellen eines Rohres

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE392173C (de) * 1921-12-18 1924-03-21 Friedrich Deckel Fabrik Fuer P Spann- und Vorschubvorrichtung fuer Materialstangen von gleichmaessigem Querschnitt bei selbsttaetigen Drehbaenken
DE1017173B (de) * 1954-06-11 1957-10-10 American Cyanamid Co Verfahren zur Gewinnung von Festem Cyanursaeurechlorid
DE1925340C3 (de) * 1969-05-16 1975-05-07 Mannesmann-Meer Ag, 4050 Moenchengladbach Vorrichtung zum Speisen von Kaltpilgerwalzwerken
DE2036382B2 (de) * 1970-07-17 1973-08-02 Mannesmann-Meer AG, 4050 Mönchengladbach Vorrichtung zum speisen eines kaltpilgerwalzwerkes
DE2725276C3 (de) * 1977-06-01 1980-11-20 Mannesmann Ag, 4000 Duesseldorf Kaltpilgerwalzwerk
DE2922941C2 (de) * 1979-06-01 1985-12-05 Mannesmann AG, 4000 Düsseldorf Kaltpilgerwalzwerk

Also Published As

Publication number Publication date
DE3145394A1 (de) 1983-05-19
EP0079295A1 (de) 1983-05-18
DE3145394C2 (enrdf_load_stackoverflow) 1988-06-09
ATE15979T1 (de) 1985-10-15
JPS5890303A (ja) 1983-05-30
JPH0641002B2 (ja) 1994-06-01

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