CA2676987C - Dining and/or serving cutlery made of ferritic stainless steel with a martensitic boundary layer - Google Patents

Dining and/or serving cutlery made of ferritic stainless steel with a martensitic boundary layer Download PDF

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Publication number
CA2676987C
CA2676987C CA2676987A CA2676987A CA2676987C CA 2676987 C CA2676987 C CA 2676987C CA 2676987 A CA2676987 A CA 2676987A CA 2676987 A CA2676987 A CA 2676987A CA 2676987 C CA2676987 C CA 2676987C
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CA
Canada
Prior art keywords
hardness
eating
outer layer
serving cutlery
core
Prior art date
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Active
Application number
CA2676987A
Other languages
English (en)
French (fr)
Other versions
CA2676987A1 (en
Inventor
Cornelius Boerner
Guenter Buehlmaier
Wolfgang Friz
Alexander Kiefer
Martin Neumayer
Theda Staudinger
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.)
WMF GmbH
Original Assignee
WMF 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 WMF GmbH filed Critical WMF GmbH
Publication of CA2676987A1 publication Critical patent/CA2676987A1/en
Application granted granted Critical
Publication of CA2676987C publication Critical patent/CA2676987C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C21D1/06—Surface hardening
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • 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
    • C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Table Equipment (AREA)
  • Heat Treatment Of Articles (AREA)
  • Cookers (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Materials For Medical Uses (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Knives (AREA)
CA2676987A 2007-02-02 2008-01-29 Dining and/or serving cutlery made of ferritic stainless steel with a martensitic boundary layer Active CA2676987C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07002295A EP1956099B1 (de) 2007-02-02 2007-02-02 Ess- und/oder Servierbesteck aus ferritischem Edelstahl mit einer martensitischen Randschicht
EP07002295.9 2007-02-02
PCT/EP2008/000680 WO2008092640A1 (de) 2007-02-02 2008-01-29 Ess- und/oder servierbesteck aus ferritischem edelstahl mit einer martensitischen randschicht

Publications (2)

Publication Number Publication Date
CA2676987A1 CA2676987A1 (en) 2008-08-07
CA2676987C true CA2676987C (en) 2012-04-10

Family

ID=38267621

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2676987A Active CA2676987C (en) 2007-02-02 2008-01-29 Dining and/or serving cutlery made of ferritic stainless steel with a martensitic boundary layer

Country Status (13)

Country Link
US (1) US8349094B2 (https=)
EP (2) EP1956099B1 (https=)
JP (1) JP5418909B2 (https=)
KR (1) KR101302051B1 (https=)
CN (1) CN101627136B (https=)
AT (1) ATE429519T1 (https=)
BR (1) BRPI0807120A2 (https=)
CA (1) CA2676987C (https=)
DE (1) DE502007000645D1 (https=)
ES (1) ES2322207T3 (https=)
PL (1) PL1956099T3 (https=)
RU (1) RU2456906C2 (https=)
WO (1) WO2008092640A1 (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008050458A1 (de) * 2008-10-08 2010-04-15 Peter Dr. Barth Schmucksachen aus Edelstahl mit einer martensitischen Randschicht
EP2209924B1 (de) 2008-10-08 2011-04-27 Peter Barth Verwendung eines biokompatiblen werkstoffes aus edelstahl mit einer martensitischen randschicht für uhren, uhrenteile und schmuck
FR2942241B1 (fr) * 2009-02-18 2011-10-21 Hydromecanique & Frottement Procede de traitement de pieces pour ustensiles de cuisine
CN106460145B (zh) 2014-05-15 2019-08-16 埃克斯潘尼特技术公司 锁紧垫圈
US20160095455A1 (en) * 2014-10-06 2016-04-07 Omnitek Partners Llc Shape Memory Safety Utensil
IT201700098637A1 (it) * 2017-09-04 2019-03-04 Mori Italian Factory S R L Procedimento di realizzazione di una posata non da taglio
US12526944B2 (en) 2022-02-16 2026-01-13 Meta Platforms Technologies, Llc Methods for forming electronic device housings

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452915A (en) * 1947-06-27 1948-11-02 Armco Steel Corp Nitriding process
US4366008A (en) * 1979-02-09 1982-12-28 Kabushiki Kaisha Fujikoshi Method for hardening steel
JPS5798674A (en) * 1980-12-11 1982-06-18 Nisshin Steel Co Ltd Production of stainless steel material for cutlery
JPS57149127A (en) * 1981-03-10 1982-09-14 Nisshin Steel Co Ltd Manufacture of high carbon stainless steel tool
GB2160227B (en) * 1984-05-04 1988-09-07 John Durham Hawkes Heat treatment process
DE4033706A1 (de) 1990-10-24 1991-02-21 Hans Prof Dr Ing Berns Einsatzhaerten mit stickstoff zur verbesserung des korrosionswiderstandes martensitischer nichtrostender staehle
JP3248772B2 (ja) * 1993-04-23 2002-01-21 エア・ウォーター株式会社 耐食性食器類
DE4333917C2 (de) * 1993-10-05 1994-06-23 Hans Prof Dr Ing Berns Randaufsticken zur Erzeugung einer hochfesten austenitischen Randschicht in nichtrostenden Stählen
JP3213254B2 (ja) * 1996-03-14 2001-10-02 エア・ウォーター株式会社 高耐蝕性金属製品およびその製法
DE19620914A1 (de) * 1996-05-24 1997-11-27 Trw Deutschland Gmbh Nichtrostender Vergütungsstahl für Ventile in Verbrennungsmotoren
DE19626833A1 (de) * 1996-07-04 1998-01-08 Hans Prof Dr Ing Berns Verfahren zur Erzeugung einer hochkorrosionsbeständigen martensitischen Randschicht über einem ferritisch-martensitischen Kern in Bauteilen aus nichtrostendem Stahl
RU2116374C1 (ru) * 1996-12-25 1998-07-27 Закрытое акционерное общество "Наука-М" Коррозионно-стойкая немагнитная износостойкая сталь
JPH11199923A (ja) * 1998-01-19 1999-07-27 Koji Goto 金属製品の部分熱処理方法及びこれを用いた金属製品
IT1298907B1 (it) * 1998-02-17 2000-02-07 Acciai Speciali Terni Spa Acciaio inossidabile ferritico perfezionato e manufatti con esso ottenuti
JP4651837B2 (ja) * 2001-03-09 2011-03-16 シチズンホールディングス株式会社 食器類およびその製造方法
JP4347747B2 (ja) 2004-05-28 2009-10-21 日新製鋼株式会社 打抜き刃用鋼板並びに打抜き刃およびその製造法
DE102004039926B4 (de) * 2004-08-18 2016-09-22 Robert Bosch Gmbh Verfahren zur Herstellung eines temperatur- und korrosionsbeständigen Kraftstoffinjektorkörpers
RU2284365C1 (ru) * 2005-06-15 2006-09-27 Институт металлургии и материаловедения Российской академии наук им. А.А. Байкова (ИМЕТ РАН) Коррозионно-стойкая немагнитная сталь

Also Published As

Publication number Publication date
CN101627136A (zh) 2010-01-13
EP1956099A1 (de) 2008-08-13
KR101302051B1 (ko) 2013-09-10
KR20100014875A (ko) 2010-02-11
CA2676987A1 (en) 2008-08-07
RU2456906C2 (ru) 2012-07-27
EP1956099B1 (de) 2009-04-22
EP2115175A1 (de) 2009-11-11
US8349094B2 (en) 2013-01-08
JP2010517605A (ja) 2010-05-27
WO2008092640A1 (de) 2008-08-07
DE502007000645D1 (de) 2009-06-04
PL1956099T3 (pl) 2009-09-30
JP5418909B2 (ja) 2014-02-19
RU2009132197A (ru) 2011-03-10
CN101627136B (zh) 2012-04-04
US20100175269A1 (en) 2010-07-15
ATE429519T1 (de) 2009-05-15
ES2322207T3 (es) 2009-06-17
BRPI0807120A2 (pt) 2014-04-08

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