DK2764127T3 - Fremgangsmåde til forbedring af træthedsstyrken af mikrolegeringsståltyper, smedede dele fremstillet ved fremgangsmåden samt apparat til udøvelse af fremgangsmåden - Google Patents

Fremgangsmåde til forbedring af træthedsstyrken af mikrolegeringsståltyper, smedede dele fremstillet ved fremgangsmåden samt apparat til udøvelse af fremgangsmåden Download PDF

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Publication number
DK2764127T3
DK2764127T3 DK12790961.2T DK12790961T DK2764127T3 DK 2764127 T3 DK2764127 T3 DK 2764127T3 DK 12790961 T DK12790961 T DK 12790961T DK 2764127 T3 DK2764127 T3 DK 2764127T3
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DK
Denmark
Prior art keywords
fatigue strength
micro
grain
steels
crankshaft
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Application number
DK12790961.2T
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English (en)
Inventor
Babasaheb Neelkanth Kalyani
Original Assignee
Babasaheb Neelkanth Kalyani
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Application filed by Babasaheb Neelkanth Kalyani filed Critical Babasaheb Neelkanth Kalyani
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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
    • 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
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • 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
    • C21D2211/001—Austenite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Claims (4)

1. Fremgangsmåde til forbedring af træthedsstyrken af smedede dele, som er fremstillet af vanadium-mikrolegeringsståltyper, hvilken fremgangsmåde har et trin med at forfine kornstørrelsen, hvilket trin med at forfine kornstørrelsen på sin side omfatter, at: delene austenitiseres ved at opvarme dem til en første temperatur, som er i området mellem 900-1050°C, - delene holdes ved denne temperatur i en opblødningsperiode på 30-60 minutter, hvor delene opnår en homogeniseret temperatur, og delene afkøles til stuetemperatur, hvor der til hver af delene tilvejebringes støtte for hindring af skævhedsdeformation under austenitiserings-, opblødnings- og afkølingstrinnene.
2. Fremgangsmåde ifølge krav 1, hvor afkølingen tilvejebringes ved vindstille eller forcerede luftkølingsmetoder.
3.
Smedet del, som er fremstillet af vanadium-mikrolegeringsståltyper, hvilken del har forbedret kornstørrelse ifølge ASTM 6-8 og struktur og er opnået ved en fremgangsmåde som defineret i et hvilket som helst af kravene 1 til 4.
DK12790961.2T 2011-10-07 2012-10-03 Fremgangsmåde til forbedring af træthedsstyrken af mikrolegeringsståltyper, smedede dele fremstillet ved fremgangsmåden samt apparat til udøvelse af fremgangsmåden DK2764127T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2852MU2011 2011-10-07
PCT/IB2012/055290 WO2013050936A1 (en) 2011-10-07 2012-10-03 A process to improve fatigue strength of micro alloy steels, forged parts made from the process and an apparatus to execute the process

Publications (1)

Publication Number Publication Date
DK2764127T3 true DK2764127T3 (da) 2015-10-19

Family

ID=47222158

Family Applications (1)

Application Number Title Priority Date Filing Date
DK12790961.2T DK2764127T3 (da) 2011-10-07 2012-10-03 Fremgangsmåde til forbedring af træthedsstyrken af mikrolegeringsståltyper, smedede dele fremstillet ved fremgangsmåden samt apparat til udøvelse af fremgangsmåden

Country Status (6)

Country Link
US (1) US9752203B2 (da)
EP (1) EP2764127B1 (da)
CN (1) CN103975080A (da)
DK (1) DK2764127T3 (da)
ES (1) ES2552955T3 (da)
WO (1) WO2013050936A1 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105445127A (zh) * 2015-11-27 2016-03-30 中国航空工业集团公司沈阳飞机设计研究所 基于增材制造的钛合金晶粒尺寸与疲劳强度关系分析方法

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Also Published As

Publication number Publication date
EP2764127B1 (en) 2015-08-12
US20140261921A1 (en) 2014-09-18
CN103975080A (zh) 2014-08-06
WO2013050936A1 (en) 2013-04-11
US9752203B2 (en) 2017-09-05
EP2764127A1 (en) 2014-08-13
ES2552955T3 (es) 2015-12-03

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