EP0308361B1 - Procédé pour la fabrication de réservoirs sous pression en acier - Google Patents

Procédé pour la fabrication de réservoirs sous pression en acier Download PDF

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Publication number
EP0308361B1
EP0308361B1 EP88730190A EP88730190A EP0308361B1 EP 0308361 B1 EP0308361 B1 EP 0308361B1 EP 88730190 A EP88730190 A EP 88730190A EP 88730190 A EP88730190 A EP 88730190A EP 0308361 B1 EP0308361 B1 EP 0308361B1
Authority
EP
European Patent Office
Prior art keywords
pressure vessels
steel
titanium
steel pressure
manufacturing steel
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
EP88730190A
Other languages
German (de)
English (en)
Other versions
EP0308361A1 (fr
Inventor
Ingo Dr.-Ing. Von Hagen
Ekkehardt Dipl.-Ing. Schnabel
Axel Dr.Mont. Kulgemeyer
Dieter Dr.-Ing. Vespermann
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
Priority to AT88730190T priority Critical patent/ATE95844T1/de
Publication of EP0308361A1 publication Critical patent/EP0308361A1/fr
Application granted granted Critical
Publication of EP0308361B1 publication Critical patent/EP0308361B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below

Definitions

  • the invention relates to a method for producing pressure vessels made of steel according to the preamble of patent claim 1.
  • tempered steels such as material 34 CrMo4 are generally used in pressure vessel construction.
  • the object of the invention is therefore to provide a method with which pressure vessels can be produced which do not have these disadvantages.
  • a reduction in the pressure vessel weight should be made possible by increased strength properties (reduction in wall thicknesses) with sufficient safety and at low costs, the material used having good welding properties and at least the following strength and toughness parameters transverse to the direction of deformation: 0.2% - proof stress over 900 N / mm2 Proof stress ratio maximum 95% Constriction at least 16% ISO V impact energy at +20 ° C over 80 J ISO V impact energy at -60 ° C over 36 J
  • This object is achieved by a method with the characterizing features of claim 1.
  • chromium is advantageously added to the steel used in accordance with claim 2 to a maximum of 0.3%.
  • the heat-treatable steel used according to the invention can be welded without problems, that is to say free of hot cracks, by the usual methods.
  • it can be oil and water tempered.
  • extraordinarily good strength and toughness values result. Some of these clearly exceed the set limit values.
  • a titanium / nitrogen ratio of 3.6 to 6.5 is required to maximize the strengthening effect of boron.
  • niobium can further increase the fine-grained nature and thus the toughness of the steel according to the invention
  • the proof stress ratio can increase to approximately 95% in the steel according to the invention, there is nevertheless sufficient security against disassembly of the container, because the constriction of the fracture can in any case be kept at a value of at least 16%. It is particularly important that the impact energy at -60 ° C transversely to the direction of deformation (ISO-V impact tests) is over 36 J. This also makes the material suitable for use at low temperatures, such as those found under arctic conditions.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (2)

  1. Procédé pour la réalisation de réservoirs sous pression en acier par modelage à chaud et/ou à froid, suivi d'un durcissement et d'un revenu,
    caractérisé en ce que l'on utilise un acier ayant la composition suivante : 0,15 - 0,26 % carbone 1,25 - 2,00 % manganèse 0,2 - 0,5 % silicium au maximum 0,02 % phosphore au maximum 0,005 % soufre 0,1 - 0,5 % molybdène 0,010 - 0,035 % titane 0,0030 - 0,0100 % N 0,001 - 0,003 % bore 0 - 0,004 % niobium le reste fer et impuretés usuelles
    le rapport entre la teneur en titane et la teneur en azote étant établi entre 3,6 et 6,5, en ce que, pour le durcissement, les réservoirs sous pression sont réchauffés à 30-50 K au-dessus de Ac₃ et sont ensuite refroidis, à une vitesse de 15-40 K/s, à une température au-dessous de 100°C et en ce que le revenu est effectué à des températures d'au moins 500°C à au plus 50 K au-dessous de Ac₁ et pendant une durée d'au moins 5 minutes.
  2. Procédé selon la revendication 1,
    caractérisé en ce que l'acier utilisé comporte de plus au maximum 0,3 % de chrome, pris sur l'élément restant fer.
EP88730190A 1987-09-16 1988-08-23 Procédé pour la fabrication de réservoirs sous pression en acier Expired - Lifetime EP0308361B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88730190T ATE95844T1 (de) 1987-09-16 1988-08-23 Verfahren zur herstellung von druckbehaeltern aus stahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3731481 1987-09-16
DE19873731481 DE3731481A1 (de) 1987-09-16 1987-09-16 Verfahren zur herstellung von druckbehaeltern aus stahl

Publications (2)

Publication Number Publication Date
EP0308361A1 EP0308361A1 (fr) 1989-03-22
EP0308361B1 true EP0308361B1 (fr) 1993-10-13

Family

ID=6336365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730190A Expired - Lifetime EP0308361B1 (fr) 1987-09-16 1988-08-23 Procédé pour la fabrication de réservoirs sous pression en acier

Country Status (3)

Country Link
EP (1) EP0308361B1 (fr)
AT (1) ATE95844T1 (fr)
DE (2) DE3731481A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1013099C2 (nl) * 1999-09-20 2001-03-21 Matthijs De Jong Drukvat voor het houden van een flu´dum, in het bijzonder een vloeibaar gas.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD79594A (fr) *
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made
FR2287519A1 (fr) * 1974-10-07 1976-05-07 Kobe Steel Ltd Acier structural de bonne aptitude au soudage avec grand apport de chaleur et son procede de fabrication
JPS52152814A (en) * 1976-06-14 1977-12-19 Nippon Steel Corp Thermo-mechanical treatment of seamless steel pipe
JPS62196326A (ja) * 1986-02-24 1987-08-29 Sumitomo Metal Ind Ltd 表面部の靭性の優れた高強度鋼の製造法

Also Published As

Publication number Publication date
DE3731481A1 (de) 1989-04-06
DE3884900D1 (de) 1993-11-18
EP0308361A1 (fr) 1989-03-22
ATE95844T1 (de) 1993-10-15

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