EP1498193A1 - Procédé et dispositif pour la fabrication des tubes sans soudure - Google Patents

Procédé et dispositif pour la fabrication des tubes sans soudure Download PDF

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Publication number
EP1498193A1
EP1498193A1 EP04090241A EP04090241A EP1498193A1 EP 1498193 A1 EP1498193 A1 EP 1498193A1 EP 04090241 A EP04090241 A EP 04090241A EP 04090241 A EP04090241 A EP 04090241A EP 1498193 A1 EP1498193 A1 EP 1498193A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
hollow body
mill
stretching
thick
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Withdrawn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
EP04090241A
Other languages
German (de)
English (en)
Inventor
Gunther Manig
Frank Lippert
Lutz Dr. Tietze
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.)
Vallourec Deutschland GmbH
Original Assignee
V&M Deutschland GmbH
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 V&M Deutschland GmbH filed Critical V&M Deutschland GmbH
Publication of EP1498193A1 publication Critical patent/EP1498193A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets
    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel 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
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Definitions

  • the invention relates to a method and apparatus for producing seamless pipes according to the preamble of claim 1.
  • Rolled or continuously extruded billets are used as starting material. To Heating to forming temperature, the billets are placed in a punch press and in Formed longitudinally through a hole dome in a thick-walled hollow body with ground.
  • the tube rolled onto the mandrel bar passes through a release mill, so that the mandrel bar can be pulled out. Then be through a hot saw the bottom piece and the pipe end separated. In a downstream Stretch reducing mill then heats up the tube reheated to forming temperature rolled out its finished dimension.
  • the object of the invention is therefore to provide a method and a device of the generic type Specify type, with the in a simple and cost-effective way the spreading and the quality can be improved.
  • a method is used to solve this problem, in the bottom piece of the hollow block is removed before stretching, whereby the described Disadvantages when rolling are avoided and a spreading improvement is reached.
  • the advantage here is that due to the lack of thick-walled floor surface dancer When stretching and extending are avoided, resulting in a significant quality improvement can be achieved.
  • the piercing of the hollow body bottom be achieved by that used for the piercing of the hollow body Mandrel to an acting in the longitudinal direction of the mandrel axial displacement device connected.
  • This can be advantageous, for example, a hydraulically acting piston-cylinder unit be.
  • the abutment exists preferably from an annular disc, wherein the bottom of the hollow body at the end face the annular disc comes to rest.
  • the inner diameter of the annular disc is so big that the mandrel rod when piercing the hollow body bottom through the annular disc through can occur.
  • the head portion of the mandrel bar is pierced the bottom suitable tapered geometry.
  • the service life increase the head area should also be surface hardened.
  • mandrel rod and head area can be interchangeable connected be, which with a necessary repair of the head area, the cost of Transportation and storage can be kept low.
  • a Mandrel inserted After the stretching process is for extending into the elongated hollow body a Mandrel inserted.
  • the Kükleelkragen must be so dimensioned that for insertion into the bumper and the axial force required to pierce the first ring caliber the mandrel bar can be transferred to the hollow body.
  • the piercing of the soil is provided at the beginning of the stretching process, must on engagement of the working caliber at the bottom of the insertion pipe end the mandrel be moved at a higher axial velocity than the tube exit velocity from the rolling mill corresponds. This can advantageously be achieved by a corresponding design the axial displacement device happen.
  • the previously produced in a punch press hollow body 2 with bottom 7 lies with the end face on an inserted into the rolling line annular disc 3 as an axial abutment.
  • the Mandrel 4 is inventively connected to a hydraulic piston-cylinder unit 5.
  • the mandrel rod 4 is in the starting position by means of the piston-cylinder unit 5 moved back to accommodate a new thick-walled hollow body can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
EP04090241A 2003-07-18 2004-06-18 Procédé et dispositif pour la fabrication des tubes sans soudure Withdrawn EP1498193A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333507 2003-07-18
DE2003133507 DE10333507B3 (de) 2003-07-18 2003-07-18 Verfahren und Einrichtung zur Herstellung von nahtlosen Rohren

Publications (1)

Publication Number Publication Date
EP1498193A1 true EP1498193A1 (fr) 2005-01-19

Family

ID=32892471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04090241A Withdrawn EP1498193A1 (fr) 2003-07-18 2004-06-18 Procédé et dispositif pour la fabrication des tubes sans soudure

Country Status (2)

Country Link
EP (1) EP1498193A1 (fr)
DE (1) DE10333507B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109092A1 (de) 2015-06-09 2016-12-15 Sms Group Gmbh Verfahren zum Betrieb einer Nahtlosrohranlage sowie Nahtlosrohranlage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005052178B4 (de) * 2004-10-25 2008-06-19 V&M Deutschland Gmbh Verfahren zum Herstellen eines nahtlos warmgefertigten Stahlrohres
CN104874637B (zh) * 2015-05-13 2017-12-12 太仓贝斯特机械设备有限公司 一种金属轻合金无缝管材料穿孔机及其工作方法
CN111036824B (zh) * 2019-12-26 2022-01-11 中钢集团邢台机械轧辊有限公司 一种锥形台阶轴的锻造方法
CN113600637B (zh) * 2021-06-30 2022-04-15 北京科技大学 一种无缝钢管及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374934A (en) * 1931-03-17 1932-06-17 Wellman Seaver Rolling Mill Co Improvements in or relating to the manufacture of metal tubes
GB2077165A (en) * 1980-06-09 1981-12-16 Mannesmann Ag Tube rolling
DE3742155A1 (de) * 1987-12-10 1989-06-22 Mannesmann Ag Verfahren und vorrichtung zur herstellung nahtloser rohre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB374934A (en) * 1931-03-17 1932-06-17 Wellman Seaver Rolling Mill Co Improvements in or relating to the manufacture of metal tubes
GB2077165A (en) * 1980-06-09 1981-12-16 Mannesmann Ag Tube rolling
DE3742155A1 (de) * 1987-12-10 1989-06-22 Mannesmann Ag Verfahren und vorrichtung zur herstellung nahtloser rohre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109092A1 (de) 2015-06-09 2016-12-15 Sms Group Gmbh Verfahren zum Betrieb einer Nahtlosrohranlage sowie Nahtlosrohranlage

Also Published As

Publication number Publication date
DE10333507B3 (de) 2004-09-23

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