EP1760162B1 - Procédé de préparation d'un arbre pour des compresseures - Google Patents

Procédé de préparation d'un arbre pour des compresseures Download PDF

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Publication number
EP1760162B1
EP1760162B1 EP05019230A EP05019230A EP1760162B1 EP 1760162 B1 EP1760162 B1 EP 1760162B1 EP 05019230 A EP05019230 A EP 05019230A EP 05019230 A EP05019230 A EP 05019230A EP 1760162 B1 EP1760162 B1 EP 1760162B1
Authority
EP
European Patent Office
Prior art keywords
steel
hardening
temperature
compressors
heat treatment
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.)
Not-in-force
Application number
EP05019230A
Other languages
German (de)
English (en)
Other versions
EP1760162A1 (fr
Inventor
Ralf Bode
Beate Dr. Langenhahn
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT05019230T priority Critical patent/ATE405680T1/de
Priority to DE502005005133T priority patent/DE502005005133D1/de
Priority to EP05019230A priority patent/EP1760162B1/fr
Publication of EP1760162A1 publication Critical patent/EP1760162A1/fr
Application granted granted Critical
Publication of EP1760162B1 publication Critical patent/EP1760162B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/41—Leather

Definitions

  • the invention relates to a method for producing a shaft for compressors.
  • toughness means the property of being able to plastically deform under macroscopic mechanical stress under mechanical stress.
  • Toughness may also be the strength of the resistance that a body opposes to a plastic deformation; H. for the magnitude of the mechanical stress and / or energy that must be applied for deformation.
  • Brittleness can be called an opposite property.
  • a disadvantage of the 9% nickel steel is that it starts to flow comparatively early under mechanical stress.
  • shafts of compressors deform when exposed to different temperatures. This happens especially when the austenite occurs unevenly distributed in the wave.
  • the invention begins, the object of which is to provide a method for producing a shaft for compressors, whereby the cold toughness of a shaft is increased and the process is easy to implement.
  • the object is achieved by the method according to claim 1 Among other things, the advantage lies in the fact that the method offers a comparatively simple possibility of improving a steel in such a way that it has a high degree of cold toughness.
  • the invention is based on the aspect that a standard heat treatment, which provides a first and only hardening process at about 850 ° C with a tempering process at about 630 ° C in an air cooling, does not produce satisfactory properties of the steel.
  • a first hardening takes place at a first temperature and a second hardening at a second temperature under water quenching and with a subsequent tempering temperature in the specified temperature range
  • a steel is surprisingly produced, its cold toughness is comparatively high. This steel is thus used to at least minus 170 ° C as a shaft material for compressors.
  • martensitic steel of the type 3.5% Ni and 1.5% Cr in particular the steel 26NiCrMoV14-5 according to Stahl-Eisen-Werkstoffblatt (SEW) 555 is used.
  • martensitic steel is particularly suitable for this process.
  • martensitic steel is particularly simple and therefore less expensive to produce.
  • the steel 26NiCrMoV14-5 is a steel which can be provided by the heat treatment according to the invention with a comparatively high cold toughness.
  • This steel is used as a shaft material for compressors.
  • the 26NiCrMoV14-5 steel is a standard shaft material for turbines and generators and therefore better available than eg.
  • the steel X8Ni9 for example, must be produced in special melts.
  • 26NiCrMoV14-5 steel is less expensive than X8Ni9 due to its lower content of alloying elements.
  • Another advantage is that the martensitic crystal structure leads to a more favorable behavior under mechanical stress.
  • Another advantage is that a uniform crystal structure peculiarities in the thermal expansion behavior can be avoided.
  • the quenching in the hardening processes in steps a) and b) takes place in the water.
  • the temperature should be at the first hardening process in particular at about 950 ° C. Ideally, the temperature during the second cure should be around 850 ° C.
  • the temperature during the starting process should ideally be around 630 ° C.
  • This special heat treatment makes it possible to provide the 26NiCrMoV14-5 martensitic steel with such high cold toughness that it is used as a shaft material for compressors up to at least minus 170 ° C, not according to the invention. It has been shown that it can not be ruled out that good batches of 26NiCrMoV14-5 steel, even with standard heat treatment, have sufficient cold toughness, ie. H. in the standard heat treatment is first cured at about 850 ° C and quenched under water and then tempered at a temperature of 630 ° C with air cooling. However, to ensure very good levels of cold toughness, as required in cryogenic compressors, the heat treatment of the present invention is required.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Rotary Pumps (AREA)

Claims (4)

  1. Procédé de fabrication d'un arbre pour des compresseurs en un matériau pour arbres,
    dans lequel on effectue un traitement thermique sur un acier martensitique,
    qui comprend une trempe et un revenu,
    qui est caractérisé par des stades suivants :
    a) trempe à une température comprise entre 920°C et 960°C,
    b) effectuer une deuxième trempe à une température comprise entre 820°C et 860°C,
    c) puis revenu à une température comprise entre 620°C et 660°C.
  2. Procédé suivant la revendication 1,
    dans lequel on utilise l'acier 26NiCrMoV14-5.
  3. Procédé suivant la revendication 1 ou 2,
    dans lequel on effectue les refroidissements dans les opérations de trempe aux stades a ) et b ) dans l'eau.
  4. Procédé suivant l'une des revendications précédentes,
    dans lequel on effectue l'opération de revenu en refroidissant par de l'air.
EP05019230A 2005-09-05 2005-09-05 Procédé de préparation d'un arbre pour des compresseures Not-in-force EP1760162B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT05019230T ATE405680T1 (de) 2005-09-05 2005-09-05 Verfahren zur herstellung einer welle für kompressoren
DE502005005133T DE502005005133D1 (de) 2005-09-05 2005-09-05 Verfahren zur Herstellung einer Welle für Kompressoren
EP05019230A EP1760162B1 (fr) 2005-09-05 2005-09-05 Procédé de préparation d'un arbre pour des compresseures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05019230A EP1760162B1 (fr) 2005-09-05 2005-09-05 Procédé de préparation d'un arbre pour des compresseures

Publications (2)

Publication Number Publication Date
EP1760162A1 EP1760162A1 (fr) 2007-03-07
EP1760162B1 true EP1760162B1 (fr) 2008-08-20

Family

ID=35705266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05019230A Not-in-force EP1760162B1 (fr) 2005-09-05 2005-09-05 Procédé de préparation d'un arbre pour des compresseures

Country Status (3)

Country Link
EP (1) EP1760162B1 (fr)
AT (1) ATE405680T1 (fr)
DE (1) DE502005005133D1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1439133A1 (ru) * 1986-12-08 1988-11-23 Алтайский тракторный завод им.М.И.Калинина Способ термической обработки конструкционной стали
SU1423609A1 (ru) * 1987-02-17 1988-09-15 Институт Механики Ан Усср Способ термической обработки изделий криогенной техники из мартенситностареющих сталей
JPH02133518A (ja) * 1988-11-14 1990-05-22 Sumitomo Metal Ind Ltd 低温靭性に優れた高張力鋼材の製造法
JPH04325625A (ja) * 1991-04-24 1992-11-16 Sumitomo Metal Ind Ltd 非Ｎｉ添加タイプ高靱性高張力鋼の製造方法
JP4134355B2 (ja) * 1997-03-25 2008-08-20 Ｊｆｅスチール株式会社 靱性に優れた連続鋳造製調質型高張力鋼板の製造方法
JP3387427B2 (ja) * 1997-11-27 2003-03-17 アイシン精機株式会社 鋼の熱処理方法

Also Published As

Publication number Publication date
EP1760162A1 (fr) 2007-03-07
DE502005005133D1 (de) 2008-10-02
ATE405680T1 (de) 2008-09-15

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