EP1060802B1 - Laminoir perceur - Google Patents

Laminoir perceur Download PDF

Info

Publication number
EP1060802B1
EP1060802B1 EP98947808A EP98947808A EP1060802B1 EP 1060802 B1 EP1060802 B1 EP 1060802B1 EP 98947808 A EP98947808 A EP 98947808A EP 98947808 A EP98947808 A EP 98947808A EP 1060802 B1 EP1060802 B1 EP 1060802B1
Authority
EP
European Patent Office
Prior art keywords
piercing
mill
spindle
main motor
disposed
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 - Lifetime
Application number
EP98947808A
Other languages
German (de)
English (en)
Other versions
EP1060802A4 (fr
EP1060802A1 (fr
Inventor
Hisao-Sumito Metal Industries Ltd. GOTO
Yoichi-Sumitomo Metal Industries Ltd. YOKOI
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of EP1060802A1 publication Critical patent/EP1060802A1/fr
Publication of EP1060802A4 publication Critical patent/EP1060802A4/fr
Application granted granted Critical
Publication of EP1060802B1 publication Critical patent/EP1060802B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/06—Drives for metal-rolling mills, e.g. hydraulic drives for non-continuously-operating mills or for single stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills

Definitions

  • the present invention relates to a piercing mill for the manufacture of seamless steel tube, and more particularly to a piercing mill which adopts an appropriate arrangement of drive units each including a main motor, thereby enabling compact arrangement of drive units.
  • the Mannesmann tube-making process is widely employed.
  • a round billet heated to a high temperature is fed as a material to be rolled into a piercing mill (a so-called "piercer"), which pierces the axial center portion of the round billet to obtain a hollow shell.
  • the thus-obtained hollow shell is fed, directly or as needed after undergoing an expansion or wall-thinning process in an elongator having the same structure as that of the piercing mill, into a subsequent elongating mill such as a plug mill, a mandrel mill, or the like so as to be elongated.
  • the thus-elongated tube undergoes a finishing process provided by a stretch reducer for shape correction, a reeler for polishing, and a sizer for sizing, thereby becoming a seamless steel tube product.
  • FIG. 1 schematically illustrates the arrangement of piercing rolls used in a piercing mill
  • FIG. 2 illustrates the arrangement of piercing rolls as seen in the direction of arrow A-A in FIG. 1
  • piercing rolls 1 are disposed symmetrically with respect to a pass line X-X such that their axes each form a cross angle of gamma relative to the pass line X-X.
  • the pass line X-X serves as an axis of movement along which a round billet 3 serving as a material to be rolled moves while being rolled.
  • one of the piercing rolls 1 is disposed so as to form a feed angle of ⁇ relative to the pass line X-X.
  • the other piercing roll 1 not shown in FIG. 2 is disposed opposite the one piercing roll with respect to the pass line X-X such that the other piercing roll 1 is inclined in the opposite direction at a feed angle of ⁇ .
  • the round billet 3 is fed along the pass line X-X in the direction of a white arrow and is nipped between the piercing rolls 1, then moves along the pass line while being rolled.
  • the billet 3 thus moving along the pass line is pierced axially by means of a plug 2.
  • a hollow shell is obtained.
  • the plug 2 is supported by a mandrel of a mandrel support device.
  • each drive unit 4 is usually composed of a spindle, a reduction mechanism, and a main motor.
  • FIG. 3 is a schematic plan view showing an arrangement of drive unit components of a conventional piercing mill
  • FIG. 4 is a schematic elevation thereof.
  • the piercing rolls are inclined in directions opposite to each other with respect to a pass line each at a feed angle of ⁇ .
  • spindles 5, which are directly connected to the piercing rolls 1, respectively are arranged in such a manner that the distance thereof from a conveying device 8 in the piercing mill; namely, a distance from the pass line X-X, becomes longer with increasing distance from the main frame of the piercing mill. Consequently, at end portions of the drive units 4, a large space must be provided on either side of the conveying device 8.
  • FIG. 4 which illustrates an equipment arrangement in the vertical direction
  • the drive units 4 of a conventional piercing mill each require a large space in the vertical direction; namely, a large difference in height.
  • the spindle 5 connected directly to one piercing roll is disposed above the pass line, while the spindle connected directly to the other piercing roll is disposed below the pass line.
  • the distance from the main frame of the piercing mill increases, the distance from the pass line to each of the spindles 5 increases.
  • the height difference between the drive units i.e., the sum of upper-side and lower-side separation distance with respect to the conveying device 8
  • the height difference between the drive units becomes considerably large at end portions of the drive units, thus giving rise to the necessity that a base for one main motor be disposed higher than the floor, whereas the base for the other main motor must be disposed a considerable distance below the floor (i.e., through digging deep below the floor).
  • the drive units 4 in the piercing mill are each composed of the spindle 5, a reduction mechanism 6, and a main motor 7, which are usually arranged in series for a reason to be stated later. More particularly, the spindle 5 is disposed in direct connection with the associated piercing roll 1, and the main motor 7 is disposed on an extension of the spindle 5 via the reduction mechanism 6. Consequently, the respective main motors 7 at end portions of the drive units 4 are separated from the main frame of the piercing mill by a long distance, and the distance and height difference between the two main motors become greater.
  • the conventional piercing mill constructed in such an arrangement not only a large two-dimensional space, but also a large three-dimensional space must be sacrificed, thus giving rise to the problem that the construction cost increases.
  • the main motor and the spindle are disposed in parallel with each other, there arises a fear that accidental breakage of the spindle may lead to a breakage failure of the main motor. Failure of the main motor would lead to long-term suspension of the rolling mill. Therefore, the premise that the drive unit components are arranged in series is also based avoiding breakage failure of the main motor.
  • An object of the present invention is to reconsider the premised arrangement of the components of the drive units in the conventional piercing mill, to thereby improve the arrangement of drive unit components and to provide a piercing mill suitable for highly efficient production of seamless steel tube.
  • the gist of the present invention resides in the below-described piercing mill for the manufacture of seamless steel tube, as shown in FIG. 5 and 6 :
  • the drive units are preferably disposed on an outlet side of the piercing mill.
  • Each main motor may optionally be disposed on the pass line side or on the side opposite the pass line, relative to the spindle, so long as the main motor is disposed on the piercing roll side relative to the reduction mechanism.
  • the piercing mill of the present invention is characterized by abandoning the conventional premise of arranging drive unit components in series and disposing a main motor on the piercing roll side relative to a reduction mechanism and in parallel with a spindle.
  • each reduction mechanism used in the piercing mill of the invention is designed so as to ensure an appropriate center-to-center distance between a main motor and a spindle.
  • the main motor can be disposed on the piercing roll side relative to the reduction mechanism and in parallel with the spindle, whereby the overall length of each drive unit is considerably shortened. Consequently, space occupied by the drive units in the piercing mill can be diminished to a remarkable extent and the construction cost can be reduced.
  • the spindle whirls about a fulcrum, which may be a connection portion between the spindle and the associated piercing roll or a connection portion between the spindle and the reduction mechanism.
  • the spindle strikes the main motor adjacent thereto sideways, causing damage to the main motor.
  • even such damage to the main motor caused by the spindle can be avoided by providing the main motor with protector means.
  • the space occupied by drive units can be greatly reduced when the foregoing construction is adopted. Therefore, when an additional facility such as a mandrel mill is disposed adjacent to the piercing mill in order to realize a continuous tube manufacturing facility, the additional facility can be disposed in proximity to the piercing mill in order to make the overall layout compact. Also, a piercer plug exchanger and a mandrel exchanger can be arranged in mutual proximity, whereby the mandrel length and the travel distance of a thrust block can be shortened.
  • drive units are preferably disposed on an outlet side of the piercing mill.
  • the cannon exchanging work in the piercing mill must be automated and the time required for the same must be shortened. Ensuring a sufficient space on an inlet side of the piercing mill is an effective measure for fulfilling this purpose.
  • provision of drive units on the outlet side of the piercing mill facilitates highly efficient production of seamless steel tube.
  • FIG. 5 is a schematic plan view showing an arrangement of drive unit components used in the piercing mill embodying the invention
  • FIG. 6 is a schematic elevation thereof.
  • piercing rolls 1 are disposed such that they incline in opposite directions at a feed angle of ⁇ and are positioned axisymmetrically such that their respective axes intersect with the pass line X-X at a cross angle of ⁇ .
  • one end of each spindle 5 is directly connected to the piercing roll 1, and the other end is directly connected to the corresponding reduction mechanism 6 via a cross pin 10.
  • the drive units 4 are arranged in such a manner that the spindles 5 connected directly to the piercing rolls 1 are spaced further away from a conveying device 8 as the distance from the main frame of piercing mill becomes longer, in order to ensure the feed angle ⁇ of each piercing roll.
  • the drive unit 4 for the upper roll is disposed above the pass line X-X, while the drive unit 4 for the lower roll is disposed below the pass line. Consequently, the height difference becomes great at the end portions of the drive units 4.
  • the main motor 7 in each drive unit 4 is disposed on the piercing roll side relative to the reduction unit 6 and in parallel with the spindle 5. Therefore, as shown in FIG. 5 , the position of the drive unit is never extended beyond the position of the reduction mechanism 6, nor is there any fear of producing a height difference greater than the height difference between the reduction mechanisms 6.
  • the transverse distance and the height difference can be diminished by an amount corresponding to the length of each main motor 7. Further, the overall equipment length can be shortened. This leads to space saving by the piercing mill and is further advantageous in that when a continuous tube manufacturing facility is to be realized an additional machine can be disposed in proximity to the piercing mill and that the overall tube manufacturing line can be made compact.
  • breakage of the spindle 5 during the material piercing work takes the form of breakage of the cross pin 10.
  • the spindle motor 5 whirls about the cross pin 10, which is a connection point on the piercing roll side, and violently strikes the main motor 7 located at the same height.
  • a gate-like guide 11 is provided as breakage prevention means at a position opposite the main motor 7.
  • FIG.7 illustrates such a gate-like guide 11 used for preventing damage to the main motor in the event of breakage of the spindle in the piercing mill of the present invention.
  • the spindle 5 merely rotates within the gate-like guide 11 and does not strike the main motor 7.
  • the gate-like guide shown in FIG. 7 is one example, use of such a breakage prevention means prevents the occurrence of a problem even in the case where the main motor 7 and the spindle 5 are arranged in parallel.
  • an effective measure for preventing breakage of the spindle itself is to use a carrier (not shown) or the like which bears the weight of the spindle and absorbs deflection of the spindle.
  • the main motor in each drive unit is disposed on the side opposite the pass line with respect to the spindle, the main motor may be disposed on the pass line side if space permits.
  • the drive units used in the invention may be disposed either on the inlet side or the outlet side of the piercing mill. However, the drive units are preferably disposed on the outlet side of the piercing mill as in the above embodiment, in order to utilize the inlet side of the piercing mill effectively.
  • the drive unit components can be arranged compactly, and when a continuous tube manufacturing process is to be realized, an additional mill or machine can be disposed in proximity to the piercing mill, whereby the overall layout can be made compact.
  • the present invention facilitates automation of cannon exchanging work in the piercing mill and shortening of the time required for the same work, thus leading to still more efficient production of seamless steel tube.
  • the piercing mill of the present invention can be utilized widely in the field of seamless steel tubes, and can realize efficient production thereof.

Landscapes

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

Abstract

Laminoir perceur, dans lequel la conception du dispositif d'entraînement utilisé dans un laminoir perceur classique est reconsidérée et l'agencement de l'équipement amélioré. Spécifiquement, un laminoir perceur, destiné à un tube en acier sans soudure, comprend une paire de cylindres perceurs (1, 1) opposés, situés à proximité d'une ligne de passe qui se déplace dans la direction de laminage d'une alimentation en tubes (3), des tampons disposés le long de ladite ligne entre les cylindres perceurs, et des dispositifs d'entraînement (4), qui transmettent un couple d'entraînement aux cylindres perceurs. Chaque dispositif d'entraînement (4) comprend un arbre tournant (5), un réducteur à engrenages (6) et un moteur principal (7), qui est placé plus près du laminoir que le réducteur (6) et juxtaposé à l'arbre tournant (5). Il est préférable qu'un dispositif d'entraînement soit disposé du côté sortie du laminoir. Comme l'espace occupé par le dispositif d'entraînement peut être réduit, l'agencement de l'équipement est plus compact et d'autres équipements avoisinants peuvent être disposés près du laminoir quand un agencement continu est nécessaire, ce qui optimise l'ensemble de l'implantation.

Claims (2)

  1. Laminoir perceur pour la fabrication d'un tube d'acier sans soudure, comportant une paire de cylindres perceurs (1) disposés en regard l'un de l'autre par rapport à l'intervalle de pincement par lequel la matière à laminer passe pendant son laminage ; un mandrin (2) disposé le long dudit intervalle de pincement de manière à être placé entre lesdits cylindres perceurs (1) et des moyens d'entraînement (4) pour appliquer une force d'entraînement en rotation aux cylindres perceurs, lesdits moyens d'entraînement comprenant chacun une tige de manoeuvre (5), un mécanisme réducteur (6), et un moteur principal (7), ladite tige (5) étant accouplée avec ledit mécanisme réducteur (6), et ledit moteur principal (7) étant accouplé avec ladite tige par l'intermédiaire dudit mécanisme réducteur (6), caractérisé en ce que ledit moteur principal (7) est placé du côté proche des cylindres perceurs (1) par rapport audit mécanisme réducteur (6) plus près des cylindres perceurs (1) que le mécanisme réducteur (6) et parallèlement à ladite tige (5).
  2. Laminoir perceur selon la revendication 1, caractérisé en ce que lesdits moyens d'entraînement (4) sont disposés sur un côté sortie du laminoir perceur.
EP98947808A 1997-10-13 1998-10-09 Laminoir perceur Expired - Lifetime EP1060802B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP27864797 1997-10-13
JP27864797 1997-10-13
PCT/JP1998/004571 WO1999019089A1 (fr) 1997-10-13 1998-10-09 Laminoir perceur

Publications (3)

Publication Number Publication Date
EP1060802A1 EP1060802A1 (fr) 2000-12-20
EP1060802A4 EP1060802A4 (fr) 2009-04-22
EP1060802B1 true EP1060802B1 (fr) 2012-02-08

Family

ID=17600203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98947808A Expired - Lifetime EP1060802B1 (fr) 1997-10-13 1998-10-09 Laminoir perceur

Country Status (3)

Country Link
EP (1) EP1060802B1 (fr)
JP (1) JP3239894B2 (fr)
WO (1) WO1999019089A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0718405Y2 (ja) * 1988-12-23 1995-05-01 住友重機械工業株式会社 鋼管用穿孔設備における出口テーブル装置
US5142893A (en) * 1991-05-17 1992-09-01 Italimpianti Of America, Inc. Tube mill
US5295379A (en) * 1993-03-05 1994-03-22 Italimpianti Of America, Inc. Vertical piercer mill

Also Published As

Publication number Publication date
EP1060802A4 (fr) 2009-04-22
EP1060802A1 (fr) 2000-12-20
JP3239894B2 (ja) 2001-12-17
WO1999019089A1 (fr) 1999-04-22

Similar Documents

Publication Publication Date Title
EP1679133B1 (fr) Dispositif de formage sous pression d'une plaque
EP0719600B1 (fr) Une unité de laminage pour laminer des barres ou des corps tubulaires
JP2001038419A (ja) ロールの迅速切替えのための水平方向に開放可能な肩を備えた圧延鉄鋼製品の矯正機
CN106862273A (zh) 一种冷轧管的轧制方法
US4416134A (en) Process for manufacturing seamless metal tubes
US8601844B2 (en) Multi-roll mandrel mill and method of producing seamless tubes
EP1060802B1 (fr) Laminoir perceur
CN111940518A (zh) 一种提升电站锅炉用不锈钢无缝管内壁粗糙度质量的冷轧制管方法
CA2179862C (fr) Porte-cylindres a module amovible de reglage de l'ecart entre cylindres
CN218395319U (zh) 一种热轧无缝钢管三辊/两辊一体斜轧管机组
JP3202623B2 (ja) 熱間圧延方法及び設備
CN101450350B (zh) 用于制造无缝钢管的方法和轧机
JPWO1999019089A1 (ja) 穿孔圧延装置
JPS6030507A (ja) ロ−ル駆動装置
US4803861A (en) Guide structure for pierced hollows
JP4123550B2 (ja) 圧延機のガイド交換装置およびその交換方法
US4449386A (en) Steel pipe rolling mill
JPH03153923A (ja) 近接回転軸の自在接手
JP3239819B2 (ja) 圧延機の圧下装置および圧下方法
US4377941A (en) Rolling mills with varied size angularly displaceable roll
EP1181990A2 (fr) Laminoir réversible sans guidage
SU1068186A1 (ru) Планетарный прокатный стан
CN111804855B (zh) 一种三自由度旋轧机
CN113290059A (zh) 钢管轧制用导筒装置
JPH0417910A (ja) フランジを有する形材のエッジング圧延装置

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000504

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE

A4 Supplementary search report drawn up and despatched

Effective date: 20090319

17Q First examination report despatched

Effective date: 20091006

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 69842592

Country of ref document: DE

Effective date: 20120412

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20121109

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 69842592

Country of ref document: DE

Effective date: 20121109

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69842592

Country of ref document: DE

Representative=s name: TER MEER STEINMEISTER & PARTNER PATENTANWAELTE, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69842592

Country of ref document: DE

Representative=s name: TER MEER STEINMEISTER & PARTNER PATENTANWAELTE, DE

Effective date: 20140402

Ref country code: DE

Ref legal event code: R081

Ref document number: 69842592

Country of ref document: DE

Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JP

Free format text: FORMER OWNER: SUMITOMO METAL INDUSTRIES, LTD., OSAKA, JP

Effective date: 20140402

Ref country code: DE

Ref legal event code: R081

Ref document number: 69842592

Country of ref document: DE

Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JP

Free format text: FORMER OWNER: SUMITOMO METAL INDUSTRIES, LTD., OSAKA, JP

Effective date: 20120216

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20171004

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69842592

Country of ref document: DE