EP0079295A1 - Procédé et dispositif pour la fabrication de tubes dans un laminoir à froid - Google Patents

Procédé et dispositif pour la fabrication de tubes dans un laminoir à froid Download PDF

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Publication number
EP0079295A1
EP0079295A1 EP82730131A EP82730131A EP0079295A1 EP 0079295 A1 EP0079295 A1 EP 0079295A1 EP 82730131 A EP82730131 A EP 82730131A EP 82730131 A EP82730131 A EP 82730131A EP 0079295 A1 EP0079295 A1 EP 0079295A1
Authority
EP
European Patent Office
Prior art keywords
feed
billet
mandrel
rolling mill
length
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
Application number
EP82730131A
Other languages
German (de)
English (en)
Other versions
EP0079295B1 (fr
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/fr
Application granted granted Critical
Publication of EP0079295B1 publication Critical patent/EP0079295B1/fr
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 present invention relates to a method and an apparatus for carrying out the method for producing pipes in a discontinuously operated cold pilger rolling mill, in which the billet is stretched over a fixed mandrel by means of caliber rolls rolling down and down on the billet, while the billet is gripped by a feed slide and is moved by means of feed spindles in the rolling direction and that on the inlet side has a rotatable mandrel abutment, in which the mandrel rod can be clamped and which can be opened with the slug for loading the rolling mill.
  • Cold rolling mills of the type described, in which the slug is inserted from the inlet side through the open mandrel abutment, are also referred to as so-called rear loaders. Since such rolling mills only have a mandrel abutment and a feed slide, which pushes the rolling material forward by an adjustable certain amount over, usually 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 range is also as long as the maximum length of the cap.
  • 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 was also set to about 15 m, which also resulted in the limitation of the known cold rolling mills to a certain maximum slug weight. This was disadvantageous because different pipe manufacturers, in particular copper pipe manufacturers, demanded larger weights, which made it necessary to use much larger weights, but was previously not achievable with the cold pilger 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 grips the slide several times and transports it several times over part of its length, the feed slide being released from the slide after each transport path and moved back into its starting position.
  • a device for carrying out the method is preferably characterized in that the feed carriage - as is known in continuously operated cold pilger rolling mills - is provided with a chuck which grips the tube blank on its circumference, and in that the mandrel abutment is arranged at a distance from the rear feed spindle end which is several times corresponds to the maximum feed slide travel.
  • the mandrel abutment is arranged at a distance from the rear feed spindle end which is several times corresponds to the maximum feed slide travel.
  • the feed carriage can be moved back to grasp the bobbin when the new bobbin is pushed into the rolling mill, namely when the rolling mill is shut down or during the running whale.
  • 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.
  • 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 advances in the direction of arrow 5 into the rolling mill 1.
  • the feed carriage 4 is driven by spindles 6, which are given their rotary movement via the gear housing 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 sq so that a new hole 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 cold rolling mill according to the invention is shown in FIG. 2, the same parts being labeled identically. It can be seen as different from the prior art in FIG. 1 that, in the cold rolling mill according to the invention, the mandrel abutment 8 is displaced to the inlet side by a considerable amount. Nevertheless, the displacement of the feed carriage 4, which is determined by the length of the feed spindle 6, remains the same length, but considerably longer mandrel bars, one of which is indicated at 9, can be used.
  • 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.
EP82730131A 1981-11-11 1982-10-21 Procédé et dispositif pour la fabrication de tubes dans un laminoir à froid Expired EP0079295B1 (fr)

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 true EP0079295A1 (fr) 1983-05-18
EP0079295B1 EP0079295B1 (fr) 1985-10-09

Family

ID=6146488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730131A Expired EP0079295B1 (fr) 1981-11-11 1982-10-21 Procédé et dispositif pour la fabrication de tubes dans un laminoir à froid

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101733280B (zh) * 2009-05-14 2012-06-06 电钢城重型机械开放式股份公司 冷轧管机
WO2017167745A1 (fr) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Laminoir à froid à pas de pèlerin et procédé de fabrication d'un tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102016106035A1 (de) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage und Verfahren zum Herstellen eines Rohres

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659446A (en) * 1969-05-16 1972-05-02 Wean Ind Inc Method and device for feeding of cold pilger mills
DE2725276A1 (de) * 1977-06-01 1978-12-07 Mannesmann Ag Kaltpilgerwalzwerk

Family Cites Families (3)

* 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
DE2036382B2 (de) * 1970-07-17 1973-08-02 Mannesmann-Meer AG, 4050 Mönchengladbach Vorrichtung zum speisen eines kaltpilgerwalzwerkes
DE2922941C2 (de) * 1979-06-01 1985-12-05 Mannesmann AG, 4000 Düsseldorf Kaltpilgerwalzwerk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659446A (en) * 1969-05-16 1972-05-02 Wean Ind Inc Method and device for feeding of cold pilger mills
DE2725276A1 (de) * 1977-06-01 1978-12-07 Mannesmann Ag Kaltpilgerwalzwerk

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101733280B (zh) * 2009-05-14 2012-06-06 电钢城重型机械开放式股份公司 冷轧管机
WO2017167745A1 (fr) * 2016-04-01 2017-10-05 Sandvik Materials Technology Deutschland Gmbh Laminoir à froid à pas de pèlerin et procédé de fabrication d'un tube
CN108883448A (zh) * 2016-04-01 2018-11-23 山特维克原料技术德国公开股份有限公司 皮尔格式冷轧机和用于制造管件的方法
US10946424B2 (en) 2016-04-01 2021-03-16 Sandvik Materials Technology Deutschland Gmbh Cold pilger rolling mill and method for producing a pipe

Also Published As

Publication number Publication date
EP0079295B1 (fr) 1985-10-09
DE3145394C2 (fr) 1988-06-09
JPS5890303A (ja) 1983-05-30
ATE15979T1 (de) 1985-10-15
JPH0641002B2 (ja) 1994-06-01
DE3145394A1 (de) 1983-05-19

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