EP1450657A1 - ALLIAGE D ALUMINIUM POUR USTENSILES CULINAIRES EMAILLES ET&s ol;OU REVETUS DE PTFE - Google Patents
ALLIAGE D ALUMINIUM POUR USTENSILES CULINAIRES EMAILLES ET&s ol;OU REVETUS DE PTFEInfo
- Publication number
- EP1450657A1 EP1450657A1 EP02804238A EP02804238A EP1450657A1 EP 1450657 A1 EP1450657 A1 EP 1450657A1 EP 02804238 A EP02804238 A EP 02804238A EP 02804238 A EP02804238 A EP 02804238A EP 1450657 A1 EP1450657 A1 EP 1450657A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- ptfe
- alloys
- cooking utensils
- content
- 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.)
- Withdrawn
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 24
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 16
- 238000010411 cooking Methods 0.000 title claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 47
- 239000000956 alloy Substances 0.000 claims description 47
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009749 continuous casting Methods 0.000 claims description 3
- 210000003298 dental enamel Anatomy 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000011777 magnesium Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000011651 chromium Substances 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000467686 Eschscholzia lobbii Species 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 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 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003605 opacifier Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
Definitions
- the invention relates to aluminum alloys used in the manufacture of cooking utensils such as frying pans, frying pans, pots, etc., coated at least on the internal face with a non-stick layer of polytetrafluoroethylene (PTFE) and optionally on the outer face of a layer of enamel.
- PTFE polytetrafluoroethylene
- Patent FR 1119221 and FR 1120749 filed in 1954 by Mmes Wamant and Grégoire.
- the second of these patents describes an acid treatment, in particular using hydrochloric acid, of the aluminum alloy surface to improve the adhesion of the PTFE layer on this surface.
- Patent FR 1137972 filed in 1955 by the same applicants, describes the deposition of a layer of PTFE on one or two faces of blanks made of aluminum alloy, for example discs, these blanks being subsequently transformed into culinary utensils by stamping. or push back.
- the most commonly used aluminum alloys are lightly loaded alloys, for example the 1200 alloy according to standard NF EN 573-3 of October 1994.
- Al-Si alloys were used for this (series 4000 according to the designation of the Aluminum Association), for example alloy 4006 with composition (% by weight): Si: 0.8 - 1.2 Fe: 0, 5 - 0.8 Cu ⁇ 0.05 Mn ⁇ 0.03 Mg ⁇ 0.01 Cr ⁇ 0.20 or alloy 4007, corresponding to patent FR 2392130, filed in 1977 by
- composition (% by weight):
- Patent FR 2420577 filed in 1978 by Cégédur and the Forges de Crans relates to an aluminum alloy for enamelling with composition (% by weight): n: 0.9 - 1.5 Si: 1 - 1.5 Fe + Ni + Co: 0.8 - 2 Cr: 0.05 - 0.2
- the alloy must comply with standard EN 602, which sets the maximum contents of certain elements for aluminum alloys intended for food contact.
- the alloy must not present any particular difficulties in processing, in particular in casting and rolling, nor in recycling, and must remain of reasonable cost.
- the subject of the invention is the use, for the manufacture of cooking utensils of which at least one face is coated with PTFE, and the other optionally enamelled, of aluminum alloy sheets containing (% by weight):
- the silicon content is preferably between 9 and 11%, that of copper less than 0.3% and that of magnesium less than 0.1%.
- This standard thus excludes a large number of potential alloys, in particular the high resistance alloys of the 2000 and 7000 series.
- the silicon content is between 5 and 13%, and preferably between 9 and 11%.
- the copper content is kept below 0.6%, and preferably below
- the manganese content is less than 0.5%, and preferably 0.1%, higher values leading to weaker adhesion of the enamel and greater difficulty in pickling before coating with PTFE.
- the iron content can go up to 0.8%, and it is undesirable to go down to very low levels, on the one hand for reasons of cost, and on the other hand because iron is rather favorable for holding the enamel.
- the alloy may contain chromium or zirconium, with a content limited to 0.2% to avoid the formation of coarse primary particles.
- the alloy strips necessary for the manufacture of cookware can be produced by conventional semi-continuous casting of plates, hot rolling, then cold rolling, the production range being able to include, depending on the properties required for shaping the utensil envisaged, an intermediate recrystallization annealing and / or a final annealing.
- the strips can also be produced by continuous casting between belts or between rolls, this latter mode of casting making it possible to avoid the hot rolling step.
- the coating of PTFE requires one or more preliminary treatments chosen from those described in patent FR 1120749 of Mrs. Wamant mentioned above, that is to say an attack with hydrochloric acid diluted between 10 and 20%, or with sulfochromic mixture, sandblasting or the formation of a hydrated alumina layer.
- the PTFE coating can be done on the utensil already formed, or on the blank before stamping, as described in patent FR 1137972.
- the alloy according to the invention allows the production of cooking utensils with good mechanical resistance, comprising a non-stick coating of PTFE, and in this case having a good aptitude for chemical attack prior to coating and a high adhesion of the PTFE on the metal, even in the absence of a primer layer, and offering the possibility of drawing on coated metal. It also allows the deposition of an enamel coating with good mechanical and chemical adhesion, and thus offers the advantage for the manufacturer to use a single alloy for all of its production, which reduces stocks. of metal.
- Alloys A, B, C, D and E correspond respectively to alloys 1200, 3004, 6061, 4004 and 4006, and their composition is outside the invention.
- the alloys F and G according to the invention correspond to the casting alloys A-S7G0.3 and A-S7G0.6.
- Alloy H has a composition in the preferred field of the invention. The plates were either reheated for 8 h at 450 ° C (alloys A, B and C), or homogenized for 8 h at 545 ° C (alloys D to H), then hot-rolled to a thickness of 9 mm.
- the strips were subjected to a recrystallization treatment for 2 h at 400 ° C., cold rolled to the final thickness of 2.4 mm, and finally annealed for 2 h at 400 ° C.
- the static mechanical characteristics have been measured resistance to rupture R m (in MPa), elastic limit Ro , 2 (in MPa) and elongation at rupture A (in%).
- the results are shown in Table 2.
- Alloy C shows a low depth of attack, a high heterogeneity of attack, and a poor adhesion of PTFE after firing. Alloy C has insufficient PTFE adhesion, alloys A, D, F and G satisfactory adhesion.
- alloys F, G and H according to the invention have the qualities required for the intended application.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0115595A FR2832913B1 (fr) | 2001-12-03 | 2001-12-03 | Alliage d'aluminium pour ustensiles culinaires emailles et/ou revetus de ptfe |
| FR0115595 | 2001-12-03 | ||
| PCT/FR2002/004122 WO2003047404A1 (fr) | 2001-12-03 | 2002-12-02 | Alliage d'aluminium pour ustensiles culinaires emailles et/ou revetus de ptfe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1450657A1 true EP1450657A1 (fr) | 2004-09-01 |
Family
ID=8870043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02804238A Withdrawn EP1450657A1 (fr) | 2001-12-03 | 2002-12-02 | ALLIAGE D ALUMINIUM POUR USTENSILES CULINAIRES EMAILLES ET&s ol;OU REVETUS DE PTFE |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1450657A1 (fr) |
| AU (1) | AU2002364622A1 (fr) |
| FR (1) | FR2832913B1 (fr) |
| WO (1) | WO2003047404A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602004004028T2 (de) * | 2003-10-17 | 2007-07-05 | Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute | Aluminium-Gusslegierung, Aluminium-Gusslegierungen und deren Herstellungsverfahren |
| FR2898135B1 (fr) * | 2006-03-06 | 2008-06-06 | Novelis Specialites France Soc | Alliage d'aluminium pour la fabrication d'un ustensile culinaire, son utilisation, et ustensile culinaire correspondant |
| CN113995296B (zh) * | 2020-07-27 | 2024-06-28 | 许密 | 烹饪器具及其成型方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1862788A (en) * | 1931-03-30 | 1932-06-14 | Aluminum Co Of America | Aluminum alloy |
| IT642100A (fr) | 1954-12-13 | |||
| FR1120749A (fr) | 1954-12-13 | 1956-07-11 | Procédé de revêtement de surfaces métalliques | |
| FR1119221A (fr) * | 1954-12-13 | 1956-06-18 | Récipient pour la cuisson des aliments et articles analogues | |
| GB1529305A (en) * | 1974-11-15 | 1978-10-18 | Alcan Res & Dev | Method of producing metal alloy products |
| CH628556A5 (en) * | 1978-11-03 | 1982-03-15 | Aluminiumwerke Ag Rorschach | Method for the production of a cooking utensil |
| US4897124A (en) * | 1987-07-02 | 1990-01-30 | Sky Aluminium Co., Ltd. | Aluminum-alloy rolled sheet for forming and production method therefor |
| FR2721041B1 (fr) * | 1994-06-13 | 1997-10-10 | Pechiney Recherche | Tôle d'alliage aluminium-silicium destinée à la construction mécanique, aéronautique et spatiale. |
| FR2763602B1 (fr) * | 1997-05-20 | 1999-07-09 | Pechiney Rhenalu | Procede de fabrication de bandes en alliages d'aluminium par coulee continue mince entre cylindres |
-
2001
- 2001-12-03 FR FR0115595A patent/FR2832913B1/fr not_active Expired - Fee Related
-
2002
- 2002-12-02 WO PCT/FR2002/004122 patent/WO2003047404A1/fr not_active Ceased
- 2002-12-02 AU AU2002364622A patent/AU2002364622A1/en not_active Abandoned
- 2002-12-02 EP EP02804238A patent/EP1450657A1/fr not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03047404A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002364622A1 (en) | 2003-06-17 |
| WO2003047404A1 (fr) | 2003-06-12 |
| FR2832913A1 (fr) | 2003-06-06 |
| FR2832913B1 (fr) | 2004-01-16 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20040504 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
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| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOVELIS, INC. |
|
| 17Q | First examination report despatched |
Effective date: 20050804 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE ALPINE D'ALUMINIUM |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20071218 |