IT1203829B - Procedimento di fabbricazione di barre cave particolarmente del tipo utilizzato per realizzare collari di trivelle per pozzi di petrolio - Google Patents

Procedimento di fabbricazione di barre cave particolarmente del tipo utilizzato per realizzare collari di trivelle per pozzi di petrolio

Info

Publication number
IT1203829B
IT1203829B IT67713/83A IT6771383A IT1203829B IT 1203829 B IT1203829 B IT 1203829B IT 67713/83 A IT67713/83 A IT 67713/83A IT 6771383 A IT6771383 A IT 6771383A IT 1203829 B IT1203829 B IT 1203829B
Authority
IT
Italy
Prior art keywords
cave
bars
type used
manufacturing procedure
oil wells
Prior art date
Application number
IT67713/83A
Other languages
English (en)
Other versions
IT8367713A0 (it
Inventor
Hayashi Chihiro
Nakasuji Kazuyuki
Original Assignee
Sumitomo Metal Ind
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
Priority claimed from JP11436382A external-priority patent/JPS594905A/ja
Priority claimed from JP7173983A external-priority patent/JPS59197305A/ja
Application filed by Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of IT8367713A0 publication Critical patent/IT8367713A0/it
Application granted granted Critical
Publication of IT1203829B publication Critical patent/IT1203829B/it

Links

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
    • B21B19/06—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
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/20—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Extraction Processes (AREA)
  • Tires In General (AREA)
IT67713/83A 1982-06-30 1983-06-29 Procedimento di fabbricazione di barre cave particolarmente del tipo utilizzato per realizzare collari di trivelle per pozzi di petrolio IT1203829B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11436382A JPS594905A (ja) 1982-06-30 1982-06-30 中空棒材の製造方法
JP7173983A JPS59197305A (ja) 1983-04-22 1983-04-22 中空棒材の製造方法

Publications (2)

Publication Number Publication Date
IT8367713A0 IT8367713A0 (it) 1983-06-29
IT1203829B true IT1203829B (it) 1989-02-23

Family

ID=26412837

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67713/83A IT1203829B (it) 1982-06-30 1983-06-29 Procedimento di fabbricazione di barre cave particolarmente del tipo utilizzato per realizzare collari di trivelle per pozzi di petrolio

Country Status (9)

Country Link
US (1) US4510787A (it)
AT (1) AT393805B (it)
AU (1) AU564031B2 (it)
CA (1) CA1214952A (it)
DE (1) DE3323221C3 (it)
FR (1) FR2529482B1 (it)
GB (1) GB2124118B (it)
IT (1) IT1203829B (it)
SE (1) SE450874B (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771811A (en) * 1984-04-20 1988-09-20 Lor, Inc. Heavy wall drill pipe and method of manufacture of heavy wall drill pipe
US4674171A (en) * 1984-04-20 1987-06-23 Lor, Inc. Heavy wall drill pipe and method of manufacture of heavy wall drill pipe
US5699690A (en) * 1995-06-19 1997-12-23 Sumitomo Metal Industries, Ltd. Method and apparatus for manufacturing hollow steel bars
US20080290070A1 (en) * 2007-05-25 2008-11-27 Fleming Donald P Method for manufacturing multi-pitch flashing
CN102059251A (zh) * 2010-08-31 2011-05-18 吴军 四辊行星热轧管机
CA2941344C (en) * 2014-03-19 2017-12-05 Nippon Steel & Sumitomo Metal Corporation Method for producing seamless metal pipe
CN106552820A (zh) * 2016-12-02 2017-04-05 河南千王钎具有限责任公司 六角形中空钢的制备方法
JP7226591B2 (ja) * 2020-01-14 2023-02-21 日本製鉄株式会社 継目無金属管の製造方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD87291A (it) *
US374703A (en) * 1887-12-13 Bolls foe reducing and tapering tubes and eods
US1957916A (en) * 1932-07-27 1934-05-08 Ralph C Stiefel Apparatus for and method of producing metal tubes
US2063689A (en) * 1933-07-03 1936-12-08 Jones & Laughlin Steel Corp Manufacture of tubes
US3132545A (en) * 1960-05-20 1964-05-12 Vincenzo S Arata Cycloidal rolling mill
SE329584B (it) * 1966-06-16 1970-10-19 Skf Svenska Kullagerfab Ab
DE1602153B2 (de) * 1967-08-05 1975-10-16 Schloemann-Siemag Ag, 4000 Duesseldorf Schrägwalzwerk zum Reduzieren von Vollquerschnitten
DE2718219B2 (de) * 1977-04-23 1979-09-06 Hoesch Werke Ag, 4600 Dortmund Kalibrierung für die Arbeitswalzen eines Schrägwalzgerüstes
JPS55114407A (en) * 1979-02-27 1980-09-03 Nippon Steel Corp Production of steel bar having hollow part of sectional area ratio 0.3 or less and producing device
DE2910445A1 (de) * 1979-03-16 1980-09-18 Schloemann Siemag Ag Verwendung eines schraegwalzwerkes mit umlaufenden walzen mit planetenantrieb
JPS57137009A (en) * 1981-02-17 1982-08-24 Sumitomo Metal Ind Ltd Manufacture of seamless metallic pipe
FR2486831A1 (fr) * 1980-07-18 1982-01-22 Sumitomo Metal Ind Procede de fabrication de tubes metalliques sans soudures

Also Published As

Publication number Publication date
SE8303710L (sv) 1983-12-31
DE3323221C3 (de) 1994-10-06
FR2529482A1 (fr) 1984-01-06
FR2529482B1 (fr) 1987-04-17
US4510787A (en) 1985-04-16
AT393805B (de) 1991-12-27
SE8303710D0 (sv) 1983-06-29
IT8367713A0 (it) 1983-06-29
GB2124118A (en) 1984-02-15
DE3323221C2 (it) 1994-10-06
ATA239283A (de) 1991-06-15
CA1214952A (en) 1986-12-09
AU1628783A (en) 1984-01-05
SE450874B (sv) 1987-08-10
AU564031B2 (en) 1987-07-30
GB8317787D0 (en) 1983-08-03
GB2124118B (en) 1985-10-23
DE3323221A1 (de) 1984-01-05

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628