EP0694622A1 - Alliage résistant à la corrosion et procédé de production de coutelleries - Google Patents
Alliage résistant à la corrosion et procédé de production de coutelleries Download PDFInfo
- Publication number
- EP0694622A1 EP0694622A1 EP95890122A EP95890122A EP0694622A1 EP 0694622 A1 EP0694622 A1 EP 0694622A1 EP 95890122 A EP95890122 A EP 95890122A EP 95890122 A EP95890122 A EP 95890122A EP 0694622 A1 EP0694622 A1 EP 0694622A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- maximum
- alloy
- temperature
- nitrogen
- contents
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 22
- 239000000956 alloy Substances 0.000 title claims abstract description 22
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 19
- 239000011651 chromium Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- 239000012535 impurity Substances 0.000 claims 2
- 239000011572 manganese Substances 0.000 claims 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 2
- 229910052750 molybdenum Inorganic materials 0.000 claims 2
- 239000011733 molybdenum Substances 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 206010020751 Hypersensitivity Diseases 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- -1 chlorine ions Chemical class 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
- 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
- C21D6/04—Hardening by cooling below 0 degrees Celsius
Definitions
- the invention relates to a corrosion-resistant alloy according to the preamble of claim 1. Furthermore, the invention relates to a method for producing cutlery with high hardness and great flexural strength according to the preamble of claim 4.
- Corrosion-resistant alloys in particular for cutlery, are required in the food and luxury food industry, which have to withstand chemical attacks particularly well and must not cause any changes in taste and shorten the shelf life of dishes and the like.
- the highest possible corrosion resistance and good polishability of the material used is also required for medical instruments. Both types of use also require high material toughness, hardness and good burr-free sharpenability, although there are no particularly high demands on the wear resistance of the material.
- Stainless steels i.e. iron-based alloys with a Cr content of around 13%, e.g. DIN material No. 1.4110, are successfully used for cutlery.
- alloys with approx. 18% Cr content e.g. material No. 1.4112, are also used, which have an increased resistance to chemical substances due to a higher Cr concentration To have an attack.
- Alloys with approx. 18% Cr and over 0.85% C have the disadvantage, however, that the flexural toughness and the polishability can be reduced, in particular by coarse carbide precipitations, with increased wear resistance and hardness of the material. Attempts have already been made to use a steel with approx.
- the object of the invention is now to provide a particularly corrosion-resistant alloy which is compatible with skin contact and has a high hardness, good polishability and, in particular, a high flexural toughness with high fracture resistance, which can also be used in media containing chlorine ions.
- the invention further aims to provide a method for producing corrosion-resistant cutlery for the food industry and for medical instruments, with which the disadvantages of the known cut parts are eliminated.
- the advantages achieved by the invention consist in particular in that the composition of the alloy with a low total carbide content ensures small carbide grain sizes as well as a high matrix hardness and thus good grinding and polishing properties and in particular good bending toughness. It is important that the sum of the carbon and nitrogen contents is in a certain range within the concentration limits. It was surprisingly found that for a steel with a chromium content of approximately 17.5% Chromium concentration in the matrix is increased by alloying with nitrogen and the corrosion resistance can thus be improved, the carbon concentration being able to be reduced without sacrificing hardenability.
- the advantages achieved by the invention can be seen essentially in the fact that alloys can be produced economically and the best performance properties of the parts can be achieved by heat treatment of the knives and instruments made therefrom. It is important that the alloying requirements are met and that a solution structure treatment results in a homogeneous structure. Also of particular importance is a soft annealing of the material around the A3 point of the alloy before austenitizing, in order to even out the precipitation and transformation kinetics during subsequent cooling with increased intensity. A subsequent tempering treatment is carried out at a comparatively low temperature and is used in particular to relax the material.
- At least one deep-freeze treatment of the material is carried out after hardening, in order to also convert any portion of residual austenite remaining in the structure into martensite.
- Table 1 lists test materials and Table 2 shows a summary of the performance characteristics of the cutlery made from the materials when using different heat treatment parameters.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Articles (AREA)
- Nonmetal Cutting Devices (AREA)
- Powder Metallurgy (AREA)
- Dry Shavers And Clippers (AREA)
- ing And Chemical Polishing (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Knives (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0128394A AT401387B (de) | 1994-06-29 | 1994-06-29 | Korrosionsbeständige legierung und verfahren zur herstellung korrosionsbeständiger schneidwaren |
| AT1283/94 | 1994-06-29 | ||
| AT128394 | 1994-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0694622A1 true EP0694622A1 (fr) | 1996-01-31 |
| EP0694622B1 EP0694622B1 (fr) | 2001-10-04 |
Family
ID=3510544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95890122A Expired - Lifetime EP0694622B1 (fr) | 1994-06-29 | 1995-06-28 | Alliage résistant à la corrosion et procédé de production de coutelleries |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0694622B1 (fr) |
| AT (2) | AT401387B (fr) |
| DE (1) | DE59509656D1 (fr) |
| DK (1) | DK0694622T3 (fr) |
| ES (1) | ES2164142T3 (fr) |
| FI (1) | FI111273B (fr) |
| NO (1) | NO309045B1 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710731A3 (fr) * | 1994-11-04 | 1996-11-27 | Boehler Edelstahl | Utilisation d'un alliage ferreux contenant de l'azote pour pièces de machine soumises à une friction de surface coulissante |
| ES2130065A1 (es) * | 1997-03-17 | 1999-06-16 | Gsb Grupo Siderurgico S A | Procedimiento de fabricacion de aceros microaleados con estructuras de ferrita acicular enfriadas de forma convencional. |
| WO2001053555A1 (fr) * | 2000-01-17 | 2001-07-26 | Stahlwerk Ergste Westig Gmbh | Alliage chrome-acier |
| WO2011023326A1 (fr) * | 2009-08-24 | 2011-03-03 | Stahlwerk Ergste Westig Gmbh | Acier chromé martensitique inoxydable |
| WO2012113569A1 (fr) * | 2011-02-24 | 2012-08-30 | Stahlwerk Ergste Westig Gmbh | Utilisation d'un acier chromé à structure martensitique et inclusions de carbure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT139392B (de) * | 1934-02-02 | 1934-11-10 | Oskar Teuchmann | Elektromagnetische Schalldose. |
| DE739958C (de) * | 1937-04-30 | 1943-10-08 | Sandvikens Jernverks Ab | Stahllegierung fuer durch Walzen oder aehnliche Verarbeitungsverfahren hergestellte korrosionsbestaendige, gehaertete Schneidwerkzeuge |
| DE954702C (de) * | 1947-10-31 | 1956-12-20 | Uddeholms Ab | Verfahren zur Erhoehung der Endhaerte beim Herstellen von Schneidwerkzeugen aus korrosionsbestaendigem Bandstahl |
| JPH02166228A (ja) * | 1988-12-20 | 1990-06-26 | Nippon Steel Corp | 均一微細な炭化物組織を有する高炭素含有ステンレス鋼の製造方法 |
| DE3901470C1 (en) * | 1989-01-19 | 1990-08-09 | Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De | Cold-working steel and its use |
| DE9215141U1 (de) * | 1992-11-06 | 1993-01-07 | Borchmann, Michael, Dr.med.dent., 4518 Bad Laer | Material zum Gebrauch in der Schmuckwarenindustrie für Schmuckwaren aller Art |
| AT397968B (de) * | 1992-07-07 | 1994-08-25 | Boehler Ybbstalwerke | Korrosionsbeständige legierung zur verwendung als werkstoff für in berührungskontakt mit lebewesen stehende teile |
| EP0638658A1 (fr) * | 1993-08-11 | 1995-02-15 | SOCIETE INDUSTRIELLE DE METALLURGIE AVANCEE S.I.M.A. Société Anonyme | Acier martensitique à l'azote à faible teneur en carbone et son procédé de fabrication |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150978A (en) * | 1978-04-24 | 1979-04-24 | Latrobe Steel Company | High performance bearing steels |
| AT392485B (de) * | 1985-05-21 | 1991-04-10 | Boehler Gmbh | Werkstoff zur herstellung von stanz- und gegenplatten |
-
1994
- 1994-06-29 AT AT0128394A patent/AT401387B/de not_active IP Right Cessation
-
1995
- 1995-06-26 NO NO952557A patent/NO309045B1/no not_active IP Right Cessation
- 1995-06-28 DE DE59509656T patent/DE59509656D1/de not_active Expired - Lifetime
- 1995-06-28 DK DK95890122T patent/DK0694622T3/da active
- 1995-06-28 ES ES95890122T patent/ES2164142T3/es not_active Expired - Lifetime
- 1995-06-28 EP EP95890122A patent/EP0694622B1/fr not_active Expired - Lifetime
- 1995-06-28 AT AT95890122T patent/ATE206477T1/de active
- 1995-06-29 FI FI953218A patent/FI111273B/fi not_active IP Right Cessation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT139392B (de) * | 1934-02-02 | 1934-11-10 | Oskar Teuchmann | Elektromagnetische Schalldose. |
| DE739958C (de) * | 1937-04-30 | 1943-10-08 | Sandvikens Jernverks Ab | Stahllegierung fuer durch Walzen oder aehnliche Verarbeitungsverfahren hergestellte korrosionsbestaendige, gehaertete Schneidwerkzeuge |
| DE954702C (de) * | 1947-10-31 | 1956-12-20 | Uddeholms Ab | Verfahren zur Erhoehung der Endhaerte beim Herstellen von Schneidwerkzeugen aus korrosionsbestaendigem Bandstahl |
| JPH02166228A (ja) * | 1988-12-20 | 1990-06-26 | Nippon Steel Corp | 均一微細な炭化物組織を有する高炭素含有ステンレス鋼の製造方法 |
| DE3901470C1 (en) * | 1989-01-19 | 1990-08-09 | Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De | Cold-working steel and its use |
| AT397968B (de) * | 1992-07-07 | 1994-08-25 | Boehler Ybbstalwerke | Korrosionsbeständige legierung zur verwendung als werkstoff für in berührungskontakt mit lebewesen stehende teile |
| DE9215141U1 (de) * | 1992-11-06 | 1993-01-07 | Borchmann, Michael, Dr.med.dent., 4518 Bad Laer | Material zum Gebrauch in der Schmuckwarenindustrie für Schmuckwaren aller Art |
| EP0638658A1 (fr) * | 1993-08-11 | 1995-02-15 | SOCIETE INDUSTRIELLE DE METALLURGIE AVANCEE S.I.M.A. Société Anonyme | Acier martensitique à l'azote à faible teneur en carbone et son procédé de fabrication |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 14, no. 431 (C - 759)<4374> 17 September 1990 (1990-09-17) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710731A3 (fr) * | 1994-11-04 | 1996-11-27 | Boehler Edelstahl | Utilisation d'un alliage ferreux contenant de l'azote pour pièces de machine soumises à une friction de surface coulissante |
| ES2130065A1 (es) * | 1997-03-17 | 1999-06-16 | Gsb Grupo Siderurgico S A | Procedimiento de fabricacion de aceros microaleados con estructuras de ferrita acicular enfriadas de forma convencional. |
| WO2001053555A1 (fr) * | 2000-01-17 | 2001-07-26 | Stahlwerk Ergste Westig Gmbh | Alliage chrome-acier |
| GB2374605A (en) * | 2000-01-17 | 2002-10-23 | Stahlwerk Ergste Westig Gmbh | Chrome steel alloy |
| GB2374605B (en) * | 2000-01-17 | 2004-02-25 | Stahlwerk Ergste Westig Gmbh | Chrome steel alloy |
| US6770243B2 (en) | 2000-01-17 | 2004-08-03 | Stahlwerk Ergste Westig Gmbh | Chrome steel alloy |
| CZ297208B6 (cs) * | 2000-01-17 | 2006-10-11 | Stahlwerk Ergste Westig Gmbh | Ocel legovaná chrómem |
| WO2011023326A1 (fr) * | 2009-08-24 | 2011-03-03 | Stahlwerk Ergste Westig Gmbh | Acier chromé martensitique inoxydable |
| WO2012113569A1 (fr) * | 2011-02-24 | 2012-08-30 | Stahlwerk Ergste Westig Gmbh | Utilisation d'un acier chromé à structure martensitique et inclusions de carbure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59509656D1 (de) | 2001-11-08 |
| DK0694622T3 (da) | 2002-01-21 |
| FI111273B (fi) | 2003-06-30 |
| AT401387B (de) | 1996-08-26 |
| ES2164142T3 (es) | 2002-02-16 |
| EP0694622B1 (fr) | 2001-10-04 |
| FI953218A0 (fi) | 1995-06-29 |
| NO952557D0 (no) | 1995-06-26 |
| FI953218A (fi) | 1995-12-30 |
| ATA128394A (de) | 1996-01-15 |
| NO952557L (no) | 1996-01-02 |
| NO309045B1 (no) | 2000-12-04 |
| ATE206477T1 (de) | 2001-10-15 |
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