SE439021B - Sett att tillverka spenningsfria ror - Google Patents

Sett att tillverka spenningsfria ror

Info

Publication number
SE439021B
SE439021B SE7712779A SE7712779A SE439021B SE 439021 B SE439021 B SE 439021B SE 7712779 A SE7712779 A SE 7712779A SE 7712779 A SE7712779 A SE 7712779A SE 439021 B SE439021 B SE 439021B
Authority
SE
Sweden
Prior art keywords
want
manufacture
voltage
free rows
rows
Prior art date
Application number
SE7712779A
Other languages
English (en)
Swedish (sv)
Other versions
SE7712779L (sv
Inventor
M Jacson
P Huot
Original Assignee
Vallourec Lorraine Escaut
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 Vallourec Lorraine Escaut filed Critical Vallourec Lorraine Escaut
Publication of SE7712779L publication Critical patent/SE7712779L/
Publication of SE439021B publication Critical patent/SE439021B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/12—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by stretching with or without twisting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Insulating Bodies (AREA)
SE7712779A 1976-11-12 1977-11-11 Sett att tillverka spenningsfria ror SE439021B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7634179A FR2370793A1 (fr) 1976-11-12 1976-11-12 Procede de fabrication de tubes detensionnes, dispositif pour la mise en oeuvre de ce procede et tubes detensionnes obtenus

Publications (2)

Publication Number Publication Date
SE7712779L SE7712779L (sv) 1978-05-13
SE439021B true SE439021B (sv) 1985-05-28

Family

ID=9179839

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7712779A SE439021B (sv) 1976-11-12 1977-11-11 Sett att tillverka spenningsfria ror

Country Status (8)

Country Link
US (1) US4156360A (fr)
JP (1) JPS5361550A (fr)
BE (1) BE860702A (fr)
DE (1) DE2750096A1 (fr)
FR (1) FR2370793A1 (fr)
GB (1) GB1588819A (fr)
IT (1) IT1114667B (fr)
SE (1) SE439021B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030598C2 (de) * 1980-08-11 1982-07-29 Mannesmann AG, 4000 Düsseldorf Verfahren zur Herstellung von gegen Spannungsrißkorrosion beständigen Rohren
FR2521883B1 (fr) * 1982-02-19 1985-08-30 Sacilor Procede de dressage d'un rail de chemin de fer et rail de chemin de fer dresse
JPS60187663A (ja) * 1984-03-01 1985-09-25 Nippon Steel Corp 低硬度で降伏強度の高い電縫油井管及びその製造方法
WO2018037421A1 (fr) * 2016-08-22 2018-03-01 Siddhi Engineers Procédé de fabrication de tubes/tuyaux de bobinage en acier pour sacs tissés et canettes/bobines pour fil synthétique
WO2019123485A1 (fr) * 2017-12-23 2019-06-27 Siddhi Engineers Procédé de traitement de trempe par induction au niveau d'un bord de tube perforé en acier permettant une résistance au choc élevée
CN115254968A (zh) * 2022-07-14 2022-11-01 上海高泰精密管材股份有限公司 一种316l无缝不锈钢管的制造工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336524A (en) * 1940-11-01 1943-12-14 Nat Tube Co Combination straightener and tester for pipes
US3031750A (en) * 1958-02-14 1962-05-01 Rods Inc Method of producing steel bars
US3469425A (en) * 1968-03-20 1969-09-30 Allegheny Ludlum Steel Apparatus for stretching tubing
US3678727A (en) * 1970-08-27 1972-07-25 Robert G Jackson Stretch-draw tubing process

Also Published As

Publication number Publication date
IT1114667B (it) 1986-01-27
DE2750096A1 (de) 1978-05-24
GB1588819A (en) 1981-04-29
SE7712779L (sv) 1978-05-13
FR2370793B1 (fr) 1979-03-02
FR2370793A1 (fr) 1978-06-09
US4156360A (en) 1979-05-29
BE860702A (fr) 1978-05-10
JPS5361550A (en) 1978-06-02

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Legal Events

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NAV Patent application has lapsed

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