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GB1291744A - Method of manufacturing seamless steel pipes - Google Patents

Method of manufacturing seamless steel pipes

Info

Publication number
GB1291744A
GB1291744A GB49428/70A GB4942870A GB1291744A GB 1291744 A GB1291744 A GB 1291744A GB 49428/70 A GB49428/70 A GB 49428/70A GB 4942870 A GB4942870 A GB 4942870A GB 1291744 A GB1291744 A GB 1291744A
Authority
GB
United Kingdom
Prior art keywords
piercing
seamless steel
steel pipes
blank
tube
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
GB49428/70A
Inventor
Hiroshi Nagai
Haruo Kamimura
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to GB49428/70A priority Critical patent/GB1291744A/en
Priority to DE19702051260 priority patent/DE2051260A1/en
Priority to AU21228/70A priority patent/AU440258B2/en
Priority to FR7037621A priority patent/FR2120229A5/fr
Priority to US82258A priority patent/US3701272A/en
Publication of GB1291744A publication Critical patent/GB1291744A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

1291744 Rolling tubes NIPPON KOKAN KK 17 Oct 1970 49428/70 Heading B3M A piercing machine for piercing a blank to form a seamless steel tube comprises a central plug 2 having an annular recess 6 in its surface, and rolls 1 which have flattened regions 5 adjacent the recess 6. The tube, after piercing, is rolled between a control plug 8, Fig. 4, and grooved rolls 7. The radius of each of the roll grooves is smaller than normal, to minimize the formation of fins on the tube surface. The reduction in cross-section of the blank during the piercing step is between 75 and 85%, and during the rolling step between 15 and 25%.
GB49428/70A 1970-10-17 1970-10-17 Method of manufacturing seamless steel pipes Expired GB1291744A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB49428/70A GB1291744A (en) 1970-10-17 1970-10-17 Method of manufacturing seamless steel pipes
DE19702051260 DE2051260A1 (en) 1970-10-17 1970-10-19 Process for the production of seamless steel tubes
AU21228/70A AU440258B2 (en) 1970-10-17 1970-10-19 Method of manufacturing seamless steel pipes
FR7037621A FR2120229A5 (en) 1970-10-17 1970-10-19
US82258A US3701272A (en) 1970-10-17 1970-10-20 Method of manufacturing seamless steel pipes

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB49428/70A GB1291744A (en) 1970-10-17 1970-10-17 Method of manufacturing seamless steel pipes
DE19702051260 DE2051260A1 (en) 1970-10-17 1970-10-19 Process for the production of seamless steel tubes
AU21228/70A AU440258B2 (en) 1970-10-17 1970-10-19 Method of manufacturing seamless steel pipes
FR7037621A FR2120229A5 (en) 1970-10-17 1970-10-19
US8225870A 1970-10-20 1970-10-20

Publications (1)

Publication Number Publication Date
GB1291744A true GB1291744A (en) 1972-10-04

Family

ID=27506668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49428/70A Expired GB1291744A (en) 1970-10-17 1970-10-17 Method of manufacturing seamless steel pipes

Country Status (5)

Country Link
US (1) US3701272A (en)
AU (1) AU440258B2 (en)
DE (1) DE2051260A1 (en)
FR (1) FR2120229A5 (en)
GB (1) GB1291744A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203373A (en) * 1987-03-27 1988-10-19 Mannesmann Ag Producing seamless pipes of a diameter of more than 200 mm

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2362639C1 (en) * 2007-12-06 2009-07-27 Открытое акционерное общество "Синарский трубный завод" (ОАО "СинТЗ") Method for longitudinal rolling of pipes
MX353551B (en) * 2012-04-11 2018-01-17 Nippon Steel & Sumitomo Metal Corp Plug used in piercing machine and plug regeneration method.
CN109926451B (en) * 2019-04-15 2020-07-21 湖南科技大学 Reducing rate distribution method for sizing hot rolling process of seamless steel pipe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US792231A (en) * 1904-04-01 1905-06-13 Nat Tube Co Art of cross-rolling tubular bodies or blanks in a heated state.
US2176155A (en) * 1936-09-03 1939-10-17 Timken Roller Bearing Co Apparatus for elongating and decreasing the wall thickness of tubular blanks
US2264455A (en) * 1939-08-07 1941-12-02 Nat Tube Co Method of producing a thick-walled seamless metallic tube
US2274579A (en) * 1941-05-05 1942-02-24 Nat Tube Co Method of producing seamless tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203373A (en) * 1987-03-27 1988-10-19 Mannesmann Ag Producing seamless pipes of a diameter of more than 200 mm
GB2203373B (en) * 1987-03-27 1991-04-03 Mannesmann Ag Process and apparatus for producing seamless pipes of a diameter of more than 200 mm

Also Published As

Publication number Publication date
US3701272A (en) 1972-10-31
AU440258B2 (en) 1973-09-06
FR2120229A5 (en) 1972-08-18
DE2051260A1 (en) 1972-04-20
AU2122870A (en) 1972-04-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee
PCPE Delete 'patent ceased' from journal

Free format text: 4973,PAGE 2040

PCNP Patent ceased through non-payment of renewal fee