EP0236805A2 - Application de pièces en acier austénitique pour basses températures - Google Patents

Application de pièces en acier austénitique pour basses températures Download PDF

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Publication number
EP0236805A2
EP0236805A2 EP87102277A EP87102277A EP0236805A2 EP 0236805 A2 EP0236805 A2 EP 0236805A2 EP 87102277 A EP87102277 A EP 87102277A EP 87102277 A EP87102277 A EP 87102277A EP 0236805 A2 EP0236805 A2 EP 0236805A2
Authority
EP
European Patent Office
Prior art keywords
austenitic
low temperature
workpieces
work pieces
steel work
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.)
Granted
Application number
EP87102277A
Other languages
German (de)
English (en)
Other versions
EP0236805A3 (en
EP0236805B1 (fr
Inventor
Werner Konrad Diehl
Martin Dr. Kesten
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Priority to AT87102277T priority Critical patent/ATE52810T1/de
Publication of EP0236805A2 publication Critical patent/EP0236805A2/fr
Publication of EP0236805A3 publication Critical patent/EP0236805A3/de
Application granted granted Critical
Publication of EP0236805B1 publication Critical patent/EP0236805B1/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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • 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
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars

Definitions

  • the invention relates to a method for reducing the thermal conductivity of workpieces made of austenitic steel.
  • the static or dynamic Austenitic chrome-nickel steels are used to transmit loads and in many cases have to be vacuum-tight, because they have a relatively low thermal conductivity compared to other metallic materials and are sufficiently tough even at low temperatures.
  • the force-transmitting cross sections must be kept small. This is only possible to a very limited extent with components made of austenitic steel because of the low strength of the material.
  • the invention has for its object to provide a method for reducing the thermal conductivity of workpieces made of austenitic steel, in particular for workpieces intended for use in low-temperature technology.
  • the starting material in this treatment is additionally solidified to an above-average degree by the deformation below its martensite formation temperature, so that components treated accordingly can transmit much higher forces or, in comparison to conventional constructions, manage with smaller cross sections, which reduces the effective heat flow further reduced by such components.
  • An austenitic tube made of steel grade No. 1.4301 with an initial hardness of 153 HV1 was plastically deformed by 10.6% by applying internal pressure in a liquid nitrogen bath. The hardness rose to 310 HV1.
  • the mean thermal conductivity of the material in the temperature range between 28 & K and 77 K decreased due to the treatment from 17 W / mK to 7 W / mK.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Laminated Bodies (AREA)
EP87102277A 1986-03-14 1987-02-18 Application de pièces en acier austénitique pour basses températures Expired - Lifetime EP0236805B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102277T ATE52810T1 (de) 1986-03-14 1987-02-18 Verwendung von werkstuecken aus austenitischem stahl in der tieftemperaturtechnik.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863608563 DE3608563A1 (de) 1986-03-14 1986-03-14 Verfahren zur verringerung der waermeleitfaehigkeit von werkstuecken aus austenitischem stahl
DE3608563 1986-03-14

Publications (3)

Publication Number Publication Date
EP0236805A2 true EP0236805A2 (fr) 1987-09-16
EP0236805A3 EP0236805A3 (en) 1988-11-30
EP0236805B1 EP0236805B1 (fr) 1990-05-16

Family

ID=6296372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102277A Expired - Lifetime EP0236805B1 (fr) 1986-03-14 1987-02-18 Application de pièces en acier austénitique pour basses températures

Country Status (4)

Country Link
EP (1) EP0236805B1 (fr)
JP (1) JPS62224631A (fr)
AT (1) ATE52810T1 (fr)
DE (1) DE3608563A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846900A (en) * 1987-08-13 1989-07-11 Messer Griesheim Gmbh Process for the production of a compresssed gas container made of austenitic steels by cryodeformation
WO1996010137A1 (fr) * 1994-09-29 1996-04-04 Leading Edge, Incorporated Procede de traitement de plaquettes de freins a disque

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195782B (de) * 1956-11-05 1965-07-01 Allegheny Ludlum Steel Verfahren zur Waermebehandlung rostfreier austenitischer Staehle
DE1452533A1 (de) * 1962-03-28 1969-02-20 Arde Portland Inc Verfahren zur Herstellung von Druckbehaeltern mit hoher Zugfestigkeit und Vorrichtung zur Durchfuehrung des Verfahrens
US4042421A (en) * 1975-12-03 1977-08-16 Union Carbide Corporation Method for providing strong tough metal alloys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846900A (en) * 1987-08-13 1989-07-11 Messer Griesheim Gmbh Process for the production of a compresssed gas container made of austenitic steels by cryodeformation
WO1996010137A1 (fr) * 1994-09-29 1996-04-04 Leading Edge, Incorporated Procede de traitement de plaquettes de freins a disque

Also Published As

Publication number Publication date
JPS62224631A (ja) 1987-10-02
EP0236805A3 (en) 1988-11-30
DE3608563C2 (fr) 1991-01-24
EP0236805B1 (fr) 1990-05-16
ATE52810T1 (de) 1990-06-15
DE3608563A1 (de) 1987-09-17

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