GB2107629A - Gap control roll in longitudinal welding of pipes - Google Patents

Gap control roll in longitudinal welding of pipes Download PDF

Info

Publication number
GB2107629A
GB2107629A GB08224641A GB8224641A GB2107629A GB 2107629 A GB2107629 A GB 2107629A GB 08224641 A GB08224641 A GB 08224641A GB 8224641 A GB8224641 A GB 8224641A GB 2107629 A GB2107629 A GB 2107629A
Authority
GB
United Kingdom
Prior art keywords
ring
sword
roll
pass
halves
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
GB08224641A
Other versions
GB2107629B (en
Inventor
Walter Hess
Otto Gotting
Hans-Gunter Birk
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 GB2107629A publication Critical patent/GB2107629A/en
Application granted granted Critical
Publication of GB2107629B publication Critical patent/GB2107629B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0822—Guiding or aligning the edges of the bent sheet
    • 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
    • B21C37/08—Making tubes with welded or soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a gap control roll for pipe pass stands in an installation for the longitudinal seam welding of pipes, said roll having a gap-entering annular ridge. To reduce wear on the ridge the invention offers a construction in which wear-resistant ridge ring or rings (4) are mounted on an outer carrier ring (3) which in turn is rotatably supported on an inner mounting ring (2) secured to the roll (1). The roll (1) is usually in two halves with the inner ring (2) therebetween, whereby the outer ring (3) is received in annular groove or recess (9) formed by the halves and the inner ring (2). <IMAGE>

Description

SPECIFICATION Sword roll for split pipe pass stands The invention relates to a sword roll for split pipe pass stands in an installation for the longitudinal seam welding of pipes.
Heretofore sword rolls have been used in which swords were tightly fitted to the roll body or pass. The load conditions on swords so mounted are such that the swords were subject to a high degree of wear and frequently broke loose.
Swords have also been used which, while rubbing on the rolling material, followed a differential movement to the roll pass, resulting in wear on the roll and the sword ring, which was further intensified through flushedin rolling scale. The consumption of sword material and rolls was correspondingly high, since re-working is only possible to a limited extent.
We have found that a substantial amount of this wear can be avoided by movably mounting the sword ring on the roll using a carrier ring. According to the present invention a sword roll for split pipe pass stands comprises a roll pass; an inner mounting ring attached to the roll pass; and an outer carrier ring rotatably mounted about the inner ring, the outer ring having at least one sword ring removably fastened thereto. Normally, the roll pass comprises two halves, the inner ring being arranged between the pass halves. The sword ring mounting embodied in the present invention reduces the need for re-working and increases the durability of the rolls and swords.
In order to prevent the ingress of rolling scale, preferred embodiments of the invention include seals between the outer ring and the roll body and/or between the inner and outer rings. The latter arrangement is particularly desirable when bearing rollers are provided between the rings to facilitate relative motion therebetween.
An embodiment of the invention is illustrated diagrammatically in the accompanying drawing which shows a cross-section through a peripheral portion of a sword roll.
In the drawing two roll pass halves 1 are connected with a central portion 2, which serves as an inner mounting ring. In the interstice or aperture 9 defined by the inner ring 2 and the two pass halves an outer carrier ring 3 is received on both sides of which are mounted sword rings 4, consisting of high-strength or highly wear-resistant material. Between the mounting ring 2 and the outer ring 3, bearing rollers 6 are arranged, facilitating rotation of the carrier ring 3 with the sword rings 4 over the inner mounting ring 2. To avoid the intrusion of scale, the carrier ring 3 is provided on both sides with seals 5 and the interstice between inner mounting ring 2 and outer carrier ring 3 is likewise provided on both sides with seals 7 for the protection of the bearing rollers 6. An inlet 8 is provided in the carrier ring 3 for the introduction of lubricant thereto.
In operation of the sword roll in the split pipe pass stand, the sword ring rolls off on the multiple roll bearing, so that in contrast to the fixed sword mounting, the wear is substantially reduced.
1. A sword roll for split pipe pass stands in an installation for the longitudinal seam welding of pipes, which roll comprises a roll pass; an inner mounting ring attached to the roll pass; and an outer carrier ring rotatably mounted about the inner ring, the outer ring having at least one sword ring removably fastened thereto.
2. A sword roll according to Claim 1 wherein the roll pass comprises two halves, the inner ring being arranged between the pass halves.
3. A sword roll according to Claim 2 including seals between the outer ring and each pass half.
4. A sword roll according to any preceding Claim wherein bearing rollers are provided between the inner and outer rings.
5. A sword roll according to Claim 4 wherein the space containing the rollers is enclosed by seals at either axial extremity thereof.
6. A sword roll according to Claim 4 or Claim 5 wherein the outer ring is formed with an inlet for carrying lubricant to the bearing rollers.
7. A sword roll according to any preceding Claim wherein said at least one sword ring is formed in a wear-resistant material.
8. A sword roll according to any preceding Claim wherein two sword rings are fastened to the outer ring, one on either axial side thereof.
9. A sword roll for split pipe pass stands substantially as described herein with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Sword roll for split pipe pass stands The invention relates to a sword roll for split pipe pass stands in an installation for the longitudinal seam welding of pipes. Heretofore sword rolls have been used in which swords were tightly fitted to the roll body or pass. The load conditions on swords so mounted are such that the swords were subject to a high degree of wear and frequently broke loose. Swords have also been used which, while rubbing on the rolling material, followed a differential movement to the roll pass, resulting in wear on the roll and the sword ring, which was further intensified through flushedin rolling scale. The consumption of sword material and rolls was correspondingly high, since re-working is only possible to a limited extent. We have found that a substantial amount of this wear can be avoided by movably mounting the sword ring on the roll using a carrier ring. According to the present invention a sword roll for split pipe pass stands comprises a roll pass; an inner mounting ring attached to the roll pass; and an outer carrier ring rotatably mounted about the inner ring, the outer ring having at least one sword ring removably fastened thereto. Normally, the roll pass comprises two halves, the inner ring being arranged between the pass halves. The sword ring mounting embodied in the present invention reduces the need for re-working and increases the durability of the rolls and swords. In order to prevent the ingress of rolling scale, preferred embodiments of the invention include seals between the outer ring and the roll body and/or between the inner and outer rings. The latter arrangement is particularly desirable when bearing rollers are provided between the rings to facilitate relative motion therebetween. An embodiment of the invention is illustrated diagrammatically in the accompanying drawing which shows a cross-section through a peripheral portion of a sword roll. In the drawing two roll pass halves 1 are connected with a central portion 2, which serves as an inner mounting ring. In the interstice or aperture 9 defined by the inner ring 2 and the two pass halves an outer carrier ring 3 is received on both sides of which are mounted sword rings 4, consisting of high-strength or highly wear-resistant material. Between the mounting ring 2 and the outer ring 3, bearing rollers 6 are arranged, facilitating rotation of the carrier ring 3 with the sword rings 4 over the inner mounting ring 2. To avoid the intrusion of scale, the carrier ring 3 is provided on both sides with seals 5 and the interstice between inner mounting ring 2 and outer carrier ring 3 is likewise provided on both sides with seals 7 for the protection of the bearing rollers 6. An inlet 8 is provided in the carrier ring 3 for the introduction of lubricant thereto. In operation of the sword roll in the split pipe pass stand, the sword ring rolls off on the multiple roll bearing, so that in contrast to the fixed sword mounting, the wear is substantially reduced. CLAIMS
1. A sword roll for split pipe pass stands in an installation for the longitudinal seam welding of pipes, which roll comprises a roll pass; an inner mounting ring attached to the roll pass; and an outer carrier ring rotatably mounted about the inner ring, the outer ring having at least one sword ring removably fastened thereto.
2. A sword roll according to Claim 1 wherein the roll pass comprises two halves, the inner ring being arranged between the pass halves.
3. A sword roll according to Claim 2 including seals between the outer ring and each pass half.
4. A sword roll according to any preceding Claim wherein bearing rollers are provided between the inner and outer rings.
5. A sword roll according to Claim 4 wherein the space containing the rollers is enclosed by seals at either axial extremity thereof.
6. A sword roll according to Claim 4 or Claim 5 wherein the outer ring is formed with an inlet for carrying lubricant to the bearing rollers.
7. A sword roll according to any preceding Claim wherein said at least one sword ring is formed in a wear-resistant material.
8. A sword roll according to any preceding Claim wherein two sword rings are fastened to the outer ring, one on either axial side thereof.
9. A sword roll for split pipe pass stands substantially as described herein with reference to the accompanying drawing.
GB08224641A 1981-09-01 1982-08-27 Gap control roll in longitudinal welding of pipes Expired GB2107629B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3135086A DE3135086C1 (en) 1981-09-01 1981-09-01 Sword roll for slot tube caliber scaffolds

Publications (2)

Publication Number Publication Date
GB2107629A true GB2107629A (en) 1983-05-05
GB2107629B GB2107629B (en) 1985-07-10

Family

ID=6140896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08224641A Expired GB2107629B (en) 1981-09-01 1982-08-27 Gap control roll in longitudinal welding of pipes

Country Status (6)

Country Link
JP (1) JPS5841613A (en)
AT (1) AT386773B (en)
DE (1) DE3135086C1 (en)
FR (1) FR2511899B1 (en)
GB (1) GB2107629B (en)
IT (1) IT1190973B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711783A (en) * 2018-07-14 2020-01-21 大连冶金工具厂有限公司 Closed hole type combined roller of high-frequency welded pipe rolling mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133569U (en) * 1984-02-16 1985-09-05 ソニー株式会社 Image tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB924825A (en) * 1961-03-22 1963-05-01 Abbey Etna Machine Co Fin rolls for tube mills
DE2608410A1 (en) * 1976-03-01 1977-09-08 Kurt Hirz Production of longitudinally seam welded tube - has successive sets of rollers to bend steel strip to cylindrical form
GB1576382A (en) * 1977-04-25 1980-10-08 Hitachi Metals Ltd Split type forming roll
US4165628A (en) * 1978-03-07 1979-08-28 Hitachi Metals, Ltd. Fin pass roll
DE2906692C2 (en) * 1979-02-19 1985-02-21 Mannesmann AG, 4000 Düsseldorf Process for the production of slotted pipes for a pipe welding machine and device for carrying out the process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711783A (en) * 2018-07-14 2020-01-21 大连冶金工具厂有限公司 Closed hole type combined roller of high-frequency welded pipe rolling mill

Also Published As

Publication number Publication date
IT1190973B (en) 1988-02-24
GB2107629B (en) 1985-07-10
FR2511899A1 (en) 1983-03-04
ATA321782A (en) 1988-03-15
IT8223002A0 (en) 1982-08-26
AT386773B (en) 1988-10-10
JPS5841613A (en) 1983-03-10
DE3135086C1 (en) 1983-04-14
FR2511899B1 (en) 1986-11-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940827