EP0367360B1 - Procédé pour la fabrication de réservoirs sous pression sans soudure - Google Patents

Procédé pour la fabrication de réservoirs sous pression sans soudure Download PDF

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Publication number
EP0367360B1
EP0367360B1 EP89250061A EP89250061A EP0367360B1 EP 0367360 B1 EP0367360 B1 EP 0367360B1 EP 89250061 A EP89250061 A EP 89250061A EP 89250061 A EP89250061 A EP 89250061A EP 0367360 B1 EP0367360 B1 EP 0367360B1
Authority
EP
European Patent Office
Prior art keywords
pressure vessels
strength
tempering
tempered
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
EP89250061A
Other languages
German (de)
English (en)
Other versions
EP0367360A2 (fr
EP0367360A3 (fr
Inventor
Dieter Dr.-Ing. Vespermann
Heinz Müller
Bernhard Dipl.-Ing. Hoffmann
Ingo Dr.-Ing. Von Hagen
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 EP0367360A2 publication Critical patent/EP0367360A2/fr
Publication of EP0367360A3 publication Critical patent/EP0367360A3/fr
Application granted granted Critical
Publication of EP0367360B1 publication Critical patent/EP0367360B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron

Definitions

  • the invention relates to a method for producing seamless pressure vessels from a CrMo steel according to the preamble of the patent claim.
  • Tempering is carried out at 530 to 680 ° C with a holding time of at least 2 min per mm wall thickness, but at least 30 min. and carried out with subsequent cooling in air.
  • the strict measurement value A2 is used.
  • the values for the 0.2 proof stress were scattered, the scattering range being 85 N / mm2. The same applies to the hardness, which was spread over a range of 40 HB.
  • the object of the invention is to improve a generic method for producing pressure vessels from a CrMo steel in such a way that an increase in the strength values or toughness properties is not associated with a corresponding deterioration in the other properties.
  • the mechanical-technological properties should be made more uniform.
  • microalloying elements Ti and B are associated with strengthening and toughening properties after tempering.
  • Example 2 aimed to increase the strength while largely maintaining the toughness properties.
  • values for the notched impact strength of 95 J / cm2 and 68 J / cm2 at -20 o C and -40 o C there were even improvements in toughness compared to the comparative example by about 9% and 31%;
  • the elongation A 2 ⁇ was 13.5%, only slightly below the minimum value of 14% required per se .
  • this impairment is easily tolerable against the background that the yield strength R p0.2 could be increased from 812 N / mm2 to 1025 N / mm2, ie by about 26%, without sacrificing toughness.
  • the spread of the yield strength and the hardness were reduced by 39% and 22%, respectively.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
  • Press Drives And Press Lines (AREA)

Claims (3)

  1. Procédé pour fabriquer des réservoirs sous pression sans soudure par déformation à chaud de tubes d'acier constitués d'un acier CrMo calmé par de l'aluminium, ayant la composition suivante (pourcentage pondéral) :
       C 0,28 - 0,38 %
       Si 0,15 - 0,40 %
       Mn 0,45 - 0,90 %
       P au maximum 0,02 %
       S au maximum 0,005 %
       Cr 0,90 - 1,30 %
       Mo 0,15 - 0,35 %
    le restant étant du fer et des impuretés usuelles, qui contient, pour une teneur en N prédéfinie de 0,003 - 0,010 %, de plus 0,010 - 0,0140 % de Ti et 0,001 - 0,003 % de B, le rapport Ti/N valant au moins 3,4, dans lequel les récipients sous pression, après la déformation à chaud, subissent un traitement de trempe et de revenu, en ce qu'ils sont austénisés à 830-880°C, puis refroidis à une vitesse de refroidissement de 5-15 K/s jusqu'à la température ambiante, ensuite subissent un revenu entre 510°C et 660°C, selon le degré de résistance mécanique souhaité, et, enfin, refroidis à l'air.
  2. Procédé selon la revendication 1,
    caractérisé en ce que, pour augmenter la résistance au choc, le revenu est effectué à 620-660°C.
  3. Procédé selon la revendication 1,
    caractérisé en ce que, pour augmenter la résistance mécanique, le revenu est effectué à 510-550°C.
EP89250061A 1988-11-01 1989-10-23 Procédé pour la fabrication de réservoirs sous pression sans soudure Expired - Lifetime EP0367360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837400 1988-11-01
DE3837400A DE3837400C2 (de) 1988-11-01 1988-11-01 Verfahren zur Herstellung nahtloser Druckbehälter

Publications (3)

Publication Number Publication Date
EP0367360A2 EP0367360A2 (fr) 1990-05-09
EP0367360A3 EP0367360A3 (fr) 1991-09-11
EP0367360B1 true EP0367360B1 (fr) 1994-08-03

Family

ID=6366452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250061A Expired - Lifetime EP0367360B1 (fr) 1988-11-01 1989-10-23 Procédé pour la fabrication de réservoirs sous pression sans soudure

Country Status (5)

Country Link
US (1) US5030297A (fr)
EP (1) EP0367360B1 (fr)
AT (1) ATE109515T1 (fr)
DE (2) DE3837400C2 (fr)
ES (1) ES2057097T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5334841A (en) * 1993-01-22 1994-08-02 Minnesota Mining And Manufacturing Company Method and apparatus for detecting fluorescence
US5387392A (en) * 1993-08-25 1995-02-07 Bethlehem Steel Corporation High strength, high toughness steel grade and gas cylinder thereof
US6488790B1 (en) 2001-01-22 2002-12-03 International Steel Group Inc. Method of making a high-strength low-alloy hot rolled steel
CN104498830B (zh) * 2014-12-30 2017-06-23 南阳汉冶特钢有限公司 一种合金结构钢及其生产方法
WO2020250009A1 (fr) * 2019-06-12 2020-12-17 Arcelormittal Acier martensitique laminé à froid et procédé d'acier martensitique s'y rapportant
CN113862556B (zh) * 2021-08-05 2022-08-05 邯郸新兴特种管材有限公司 一种4140中厚壁无缝钢管及生产方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339678A1 (fr) * 1976-01-28 1977-08-26 Ugine Aciers Aciers a caracteristiques mecaniques ameliorees par additions controlees de b, al et n
JPS52152814A (en) * 1976-06-14 1977-12-19 Nippon Steel Corp Thermo-mechanical treatment of seamless steel pipe
JPS6035981B2 (ja) * 1981-06-25 1985-08-17 住友金属工業株式会社 圧力容器用高強度高靭性圧延鋼材
JPS6067624A (ja) * 1983-09-22 1985-04-18 Kawasaki Steel Corp 高強度高靭性鋼管の製造方法
JPS6187818A (ja) * 1984-10-03 1986-05-06 Nippon Steel Corp 高温高圧容器用極厚鋼材の製造方法
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
US4740255A (en) * 1986-03-17 1988-04-26 Manton Robert B High strength weldable seamless tube of low alloy steel

Also Published As

Publication number Publication date
ES2057097T3 (es) 1994-10-16
EP0367360A2 (fr) 1990-05-09
DE3837400A1 (de) 1990-05-03
ATE109515T1 (de) 1994-08-15
DE3837400C2 (de) 1995-02-23
US5030297A (en) 1991-07-09
DE58908140D1 (de) 1994-09-08
EP0367360A3 (fr) 1991-09-11

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