EP1956099A1 - Couvert de service en acier ferritique inoxydable avec couche de surface martensitique - Google Patents
Couvert de service en acier ferritique inoxydable avec couche de surface martensitique Download PDFInfo
- Publication number
- EP1956099A1 EP1956099A1 EP07002295A EP07002295A EP1956099A1 EP 1956099 A1 EP1956099 A1 EP 1956099A1 EP 07002295 A EP07002295 A EP 07002295A EP 07002295 A EP07002295 A EP 07002295A EP 1956099 A1 EP1956099 A1 EP 1956099A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hardness
- core
- eating
- martensitic
- surface layer
- 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
Links
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 24
- 239000002344 surface layer Substances 0.000 title claims description 29
- 229910001220 stainless steel Inorganic materials 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 235000013305 food Nutrition 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 5
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 229910003470 tongbaite Inorganic materials 0.000 claims description 2
- 238000007545 Vickers hardness test Methods 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000019592 roughness Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009956 embroidering Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000014594 pastries Nutrition 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
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
Definitions
- the invention relates to dining and / or serving cutlery made of a steel material, which is formed from a ferritic core with a substantially martensitic edge layer.
- the surface hardness of the surface layer determined by the hardness test according to Vickers HV3, is 30 to 300% greater than the smallest hardness of the core, measured also according to Vickers HV 3.
- the hardening temperature which must be used for such processes, depends on the steel grade and can be above 1000 ° C.
- a steel material which consists of a ferritic core with a substantially martensitic edge layer.
- the edge layer may be formed on one or more sides or the core ummantelnd.
- the invention also includes embodiments in which the surface layer still has a small proportion, depending on the stored C and N content of the steel material of retained austenite.
- Essential for the invention is that between the surface hardness of the surface layer and the smallest hardness of the core, a hardness difference, measured according to Vickers HV 3, by at least 30 to 300%.
- the dining and / or serving cutlery according to the invention are further characterized by the fact that they also have a difference in terms of the modulus of elasticity between the martensitic surface layer and the core of the material, regardless of the aforementioned difference in hardness.
- the martensitic surface layer has an E modulus, measured in kN / mm 2 , which is 1 to 100% greater than the E modulus of the core material.
- the core is left relatively elastic, i. is formed of a ferritic material which retains the intrinsic properties inherent in the untreated steel material and that then only the surface layer is formed so that here a difference in hardness or a difference of the modulus of elasticity, as described above, is set.
- the applicant could show that not only is there a very high elasticity of the dining and / or serving cutlery according to the invention, but also that a scratching of the surface can be largely avoided.
- the hardness difference between the surface hardness of the surface layer to the smallest hardness of the core is 80 to 250%, preferably 100 to 250%.
- the surface hardness of the martensitic surface layer in the range of 320 to 650 HV 3 and the smallest hardness of the core in the range of 160 to 260 HV 3 are.
- the hardness test according to Vickers reference is made to the known standards according to DIN EN ISO 6507.
- the modulus of elasticity it is particularly favorable if there is an modulus of elasticity between the martensitic surface layer and the core of the material, with the proviso that that the modulus of elasticity in the surface layer is greater by 1 to 50% than that of the core.
- the determination of the modulus of elasticity in kN / mm 2 was carried out at 20 ° C.
- the edge layer of the eating and serving cutlery of the invention is defined by a hardening depth (EHT) which leads from the smallest hardness of the core, measured according to HV 3 + 30%, to the surface of the surface layer.
- the hardening depth (EHT) can be in the range of 0.005 mm to 1.0 mm, preferably 0.01 mm to 0.4 mm and particularly preferably in the range of 0.01 to 0.3 mm.
- Another characteristic of the surface layer according to the invention is that the hardness and also the modulus of elasticity within the martensitic surface layer decreases starting from the surface in the direction of the core as defined above.
- the decrease in hardness or the modulus of elasticity can take place continuously and / or also gradient-wise.
- the largest contribution to the decrease in hardness or the modulus of elasticity lies in the near-surface region of the surface layer itself.
- the surface of the martensitic surface layer is roughened and / or matted.
- the surface roughness can be in the range of 1.5 ⁇ m to 4.0 ⁇ m.
- Roughnesses of 1.9 ⁇ m to 2.8 ⁇ m (Scotch tape) or 1.7 ⁇ m to 2.1 ⁇ m (brushed) are preferred.
- polished surfaces have a roughness of 0.8 ⁇ m to 1.3 ⁇ m.
- ferritic steels are: 1.4021, 1.4000, 1.4016, 1.4028, 1.4024, 1.4034 and 1.4116. Preference is given to the steels 1.4021 and 1.4016.
- An essential advantage of the dining and serving utensil according to the invention consists in the fact that a steel can be selected which has a relatively low hardness and thus high elasticity and that the martensitic surface layer is subsequently formed by the treatment method described below. By the martensitic surface layer then results in a significant increase in hardness, while maintaining the elastic core, which then superior properties in terms of scratch and corrosion resistance can be achieved.
- the surface of the surface layer has a microstructure, which is characterized by a higher grain size compared to untreated steels, as well as the fact that no chromium carbide precipitates are present at the grain boundaries.
- the invention basically includes all corresponding objects, which are known in the art. Examples are knives, spoons, forks, pastry and cake servers, makers, tongs and rugs.
- the formation of the martensitic surface layer can be carried out in the dining and serving cutlery according to the invention by a heat treatment, preferably by a so-called "Aufsticken".
- the Aufsticken of steel materials is in and of itself known in the art and is eg in the EP 0 652 300 A1 or in the DE 40 33 706 described.
- edge embroidering is carried out so that the steel material is treated at a temperature between 1000 ° C and 1200 ° C in a nitrogen-containing gas atmosphere and subsequent cooling.
- FIG. 1 shows both the hardness profile after a heat treatment on the example of steel grade 1.4016 in the form of a graph and in FIG. 1b a cross section in the magnification 50: 1.
- FIG. 1 was a table spoon made by the company WMF steel grade 1.4016 at temperatures above 1050 ° C with nitrogen embroidered and quenched or deep-frozen and tempered.
- the material 1.4016, X7 chromium 17 is a ferritic steel with 0.06 to 0.1% carbon.
- the incorporation of nitrogen causes tension in the lattice, resulting in quenching martensite, the like FIG. 1b to see towards the core according to the deposits decreases.
- the table spoon has a surface hardness of 594 HV 3.
- the hardening depth was 106 ⁇ m in the example case.
- the calculation of the Einhärtungstiefe is carried out according to the invention so that the lowest hardness of the core is also measured in HV 3 + 30%.
- the output value is 240 HV 3.
- FIG. 1b shows very clearly the microstructure, from which the martensitic boundary layer can be seen and the essentially ferritic core.
- the treated surface has an average grain diameter of 28 to 40 microns measured by the average diameter method.
- the grain diameter of the treated part is in the core at 15 to 20 microns and the untreated starting material at 10 to 14 microns linear.
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- 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)
- Heat Treatment Of Articles (AREA)
- Table Equipment (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Knives (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Materials For Medical Uses (AREA)
- Cookers (AREA)
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07002295T PL1956099T3 (pl) | 2007-02-02 | 2007-02-02 | Sztućce z ferrytycznej stali stopowej z martenzytyczną warstwą brzegową |
AT07002295T ATE429519T1 (de) | 2007-02-02 | 2007-02-02 | Ess- und/oder servierbesteck aus ferritischem edelstahl mit einer martensitischen randschicht |
EP07002295A EP1956099B1 (fr) | 2007-02-02 | 2007-02-02 | Couvert de service en acier ferritique inoxydable avec couche de surface martensitique |
ES07002295T ES2322207T3 (es) | 2007-02-02 | 2007-02-02 | Cubierto de comer y/o servir con una capa marginal de martensita. |
DE502007000645T DE502007000645D1 (de) | 2007-02-02 | 2007-02-02 | Ess- und/oder Servierbesteck aus ferritischem Edelstahl mit einer martensitischen Randschicht |
KR1020097018029A KR101302051B1 (ko) | 2007-02-02 | 2008-01-29 | 마르텐사이트 경계층을 갖는 식사용 및/또는 서빙용 날붙이 |
CA2676987A CA2676987C (fr) | 2007-02-02 | 2008-01-29 | Couvert de table et/ou couvert de service en acier inoxydable ferritique a couche en bordure martensitique |
PCT/EP2008/000680 WO2008092640A1 (fr) | 2007-02-02 | 2008-01-29 | Couvert de table et/ou couvert de service en acier inoxydable ferritique à couche en bordure martensitique |
JP2009547589A JP5418909B2 (ja) | 2007-02-02 | 2008-01-29 | 食事用および/または取り分け用カトラリー |
EP08707381A EP2115175A1 (fr) | 2007-02-02 | 2008-01-29 | Couvert de table et/ou couvert de service en acier inoxydable ferritique à couche en bordure martensitique |
US12/449,233 US8349094B2 (en) | 2007-02-02 | 2008-01-29 | Dining and/or serving cutlery made of ferritic stainless steel with a martensitic boundary layer |
RU2009132197/02A RU2456906C2 (ru) | 2007-02-02 | 2008-01-29 | Столовые и/или сервировочные приборы, изготовленные из ферритной нержавеющей стали с мартенситным поверхностным слоем |
CN200880003667XA CN101627136B (zh) | 2007-02-02 | 2008-01-29 | 具有马氏体边界层的由铁素体不锈钢制成的进餐和/或分餐餐具 |
BRPI0807120-9A2A BRPI0807120A2 (pt) | 2007-02-02 | 2008-01-29 | Talheres de refeição e/ou servir com uma camada limite martensítica |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07002295A EP1956099B1 (fr) | 2007-02-02 | 2007-02-02 | Couvert de service en acier ferritique inoxydable avec couche de surface martensitique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1956099A1 true EP1956099A1 (fr) | 2008-08-13 |
EP1956099B1 EP1956099B1 (fr) | 2009-04-22 |
Family
ID=38267621
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07002295A Active EP1956099B1 (fr) | 2007-02-02 | 2007-02-02 | Couvert de service en acier ferritique inoxydable avec couche de surface martensitique |
EP08707381A Withdrawn EP2115175A1 (fr) | 2007-02-02 | 2008-01-29 | Couvert de table et/ou couvert de service en acier inoxydable ferritique à couche en bordure martensitique |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08707381A Withdrawn EP2115175A1 (fr) | 2007-02-02 | 2008-01-29 | Couvert de table et/ou couvert de service en acier inoxydable ferritique à couche en bordure martensitique |
Country Status (13)
Country | Link |
---|---|
US (1) | US8349094B2 (fr) |
EP (2) | EP1956099B1 (fr) |
JP (1) | JP5418909B2 (fr) |
KR (1) | KR101302051B1 (fr) |
CN (1) | CN101627136B (fr) |
AT (1) | ATE429519T1 (fr) |
BR (1) | BRPI0807120A2 (fr) |
CA (1) | CA2676987C (fr) |
DE (1) | DE502007000645D1 (fr) |
ES (1) | ES2322207T3 (fr) |
PL (1) | PL1956099T3 (fr) |
RU (1) | RU2456906C2 (fr) |
WO (1) | WO2008092640A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010040333A1 (fr) * | 2008-10-08 | 2010-04-15 | Peter Barth | Matériau en acier spécial biocompatible avec une couche de bord martensitique |
DE102008050458A1 (de) * | 2008-10-08 | 2010-04-15 | Peter Dr. Barth | Schmucksachen aus Edelstahl mit einer martensitischen Randschicht |
FR2942241A1 (fr) * | 2009-02-18 | 2010-08-20 | Hydromecanique & Frottement | Procede de traitement de pieces pour ustensiles de cuisine |
IT201700098637A1 (it) * | 2017-09-04 | 2019-03-04 | Mori Italian Factory S R L | Procedimento di realizzazione di una posata non da taglio |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3143176B1 (fr) | 2014-05-15 | 2020-05-27 | Expanite Technology A/S | Élément de fixation en acier inoxydable durci |
US20160095455A1 (en) * | 2014-10-06 | 2016-04-07 | Omnitek Partners Llc | Shape Memory Safety Utensil |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798674A (en) * | 1980-12-11 | 1982-06-18 | Nisshin Steel Co Ltd | Production of stainless steel material for cutlery |
GB2160227A (en) * | 1984-05-04 | 1985-12-18 | 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 |
EP0652300A1 (fr) | 1993-10-05 | 1995-05-10 | Hans Prof. Dr.-Ing. Berns | Nitruration superficielle pour la production d'une couche austénitique à résistance élevée dans les aciers inoxydables |
DE102004039926A1 (de) * | 2004-08-18 | 2006-02-23 | Robert Bosch Gmbh | Verfahren zur Herstellung eines temperatur- und korrosionsbeständigen Kraftstoffinjektorkörpers |
Family Cites Families (13)
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 |
JPS57149127A (en) * | 1981-03-10 | 1982-09-14 | Nisshin Steel Co Ltd | Manufacture of high carbon stainless steel tool |
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 |
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 |
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 |
-
2007
- 2007-02-02 AT AT07002295T patent/ATE429519T1/de active
- 2007-02-02 DE DE502007000645T patent/DE502007000645D1/de active Active
- 2007-02-02 PL PL07002295T patent/PL1956099T3/pl unknown
- 2007-02-02 EP EP07002295A patent/EP1956099B1/fr active Active
- 2007-02-02 ES ES07002295T patent/ES2322207T3/es active Active
-
2008
- 2008-01-29 RU RU2009132197/02A patent/RU2456906C2/ru active
- 2008-01-29 JP JP2009547589A patent/JP5418909B2/ja active Active
- 2008-01-29 KR KR1020097018029A patent/KR101302051B1/ko active IP Right Grant
- 2008-01-29 WO PCT/EP2008/000680 patent/WO2008092640A1/fr active Application Filing
- 2008-01-29 US US12/449,233 patent/US8349094B2/en active Active
- 2008-01-29 EP EP08707381A patent/EP2115175A1/fr not_active Withdrawn
- 2008-01-29 CN CN200880003667XA patent/CN101627136B/zh active Active
- 2008-01-29 CA CA2676987A patent/CA2676987C/fr active Active
- 2008-01-29 BR BRPI0807120-9A2A patent/BRPI0807120A2/pt active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798674A (en) * | 1980-12-11 | 1982-06-18 | Nisshin Steel Co Ltd | Production of stainless steel material for cutlery |
GB2160227A (en) * | 1984-05-04 | 1985-12-18 | 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 |
EP0652300A1 (fr) | 1993-10-05 | 1995-05-10 | Hans Prof. Dr.-Ing. Berns | Nitruration superficielle pour la production d'une couche austénitique à résistance élevée dans les aciers inoxydables |
DE102004039926A1 (de) * | 2004-08-18 | 2006-02-23 | Robert Bosch Gmbh | Verfahren zur Herstellung eines temperatur- und korrosionsbeständigen Kraftstoffinjektorkörpers |
Non-Patent Citations (2)
Title |
---|
CORRSION SCIENCE, vol. 48, 2006, pages 2036 - 2049 |
LI ET AL: "Corrosion properties of plasma nitrided AISI 410 martensitic stainless steel in 3.5% NaCl and 1% HCl aqueous solutions", CORROSION SCIENCE, OXFORD, GB, vol. 48, no. 8, August 2006 (2006-08-01), pages 2036 - 2049, XP005575380, ISSN: 0010-938X * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010040333A1 (fr) * | 2008-10-08 | 2010-04-15 | Peter Barth | Matériau en acier spécial biocompatible avec une couche de bord martensitique |
DE102008050458A1 (de) * | 2008-10-08 | 2010-04-15 | Peter Dr. Barth | Schmucksachen aus Edelstahl mit einer martensitischen Randschicht |
EP2351860A1 (fr) * | 2008-10-08 | 2011-08-03 | Barth, Peter | Matière première biocompatible en acier inoxydable dotée d'une couche martensitique obtenue par trempe de la surface enrichie en azote. |
US8597437B2 (en) | 2008-10-08 | 2013-12-03 | Peter Barth | Biocompatible material made of stainless steel having a martensitic surface layer |
FR2942241A1 (fr) * | 2009-02-18 | 2010-08-20 | Hydromecanique & Frottement | Procede de traitement de pieces pour ustensiles de cuisine |
IT201700098637A1 (it) * | 2017-09-04 | 2019-03-04 | Mori Italian Factory S R L | Procedimento di realizzazione di una posata non da taglio |
Also Published As
Publication number | Publication date |
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US20100175269A1 (en) | 2010-07-15 |
JP5418909B2 (ja) | 2014-02-19 |
BRPI0807120A2 (pt) | 2014-04-08 |
CA2676987C (fr) | 2012-04-10 |
CN101627136B (zh) | 2012-04-04 |
EP1956099B1 (fr) | 2009-04-22 |
US8349094B2 (en) | 2013-01-08 |
DE502007000645D1 (de) | 2009-06-04 |
WO2008092640A1 (fr) | 2008-08-07 |
JP2010517605A (ja) | 2010-05-27 |
EP2115175A1 (fr) | 2009-11-11 |
KR20100014875A (ko) | 2010-02-11 |
RU2009132197A (ru) | 2011-03-10 |
KR101302051B1 (ko) | 2013-09-10 |
CA2676987A1 (fr) | 2008-08-07 |
ATE429519T1 (de) | 2009-05-15 |
CN101627136A (zh) | 2010-01-13 |
PL1956099T3 (pl) | 2009-09-30 |
RU2456906C2 (ru) | 2012-07-27 |
ES2322207T3 (es) | 2009-06-17 |
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