WO2001026522A1 - Cooking vessel for induction cooking appliance and method for making same - Google Patents

Cooking vessel for induction cooking appliance and method for making same Download PDF

Info

Publication number
WO2001026522A1
WO2001026522A1 PCT/FR1999/002419 FR9902419W WO0126522A1 WO 2001026522 A1 WO2001026522 A1 WO 2001026522A1 FR 9902419 W FR9902419 W FR 9902419W WO 0126522 A1 WO0126522 A1 WO 0126522A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
cermet
layer
iron
mixtures
Prior art date
Application number
PCT/FR1999/002419
Other languages
French (fr)
Inventor
Jean-Claude Labbe
Valérie COUDERT
Original Assignee
Les Fonderies Franco-Belges
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
Priority to FR9810918A priority Critical patent/FR2782736B1/en
Application filed by Les Fonderies Franco-Belges filed Critical Les Fonderies Franco-Belges
Priority to PCT/FR1999/002419 priority patent/WO2001026522A1/en
Priority to EP99974100A priority patent/EP1217926A1/en
Priority to KR1020027004308A priority patent/KR20020037061A/en
Priority to JP2001529319A priority patent/JP2003511134A/en
Publication of WO2001026522A1 publication Critical patent/WO2001026522A1/en

Links

Classifications

    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • A47J27/00—Cooking-vessels
    • A47J27/02—Cooking-vessels with enlarged heating surfaces
    • A47J27/022—Cooking-vessels with enlarged heating surfaces with enlarged bottom
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

Definitions

  • the present invention relates generally to a culinary container for an induction cooking appliance and more particularly to a container made of cast aluminum suitable for induction cooking. To undergo induction heating, a cooking container must have specific electrical resistance characteristics.
  • the electrical resistance of the container material must be relatively low, otherwise the induced currents would not circulate or insufficiently to ensure proper heating of the container and below a minimum current intensity value.
  • this electrical resistance must not be too low to the point that the currents induced in the container or part of the container exceed a maximum value 1 --- ⁇ admissible without deterioration of the inductor and that the safety of the inductor intervenes. then to cut off the power supply to the inductor.
  • Classic cast aluminum cookware is not suitable for induction heating. In fact, the resistivity of cast aluminum is low. Thus, a cast aluminum pan having a bottom with a diameter of 15 cm and a thickness of 5 mm has a resistance of 0.27 10 "3 , an inadequate value to cause by itself a coupling with the inductor.
  • Document FR 2 717 062 describes a method for extending the life of an aluminum cooking utensil or having an aluminum bottom and for allowing their use on an induction hob which consists in coating the outside surface of the bottom a layer of a harder alloy than aluminum by spraying droplets of a metal or a ferromagnetic molten alloy.
  • the use of a metal or a ferromagnetic molten alloy deposited by spraying makes it difficult to adjust the electrical properties of the container and in particular the value of the electrical resistance.
  • the present invention therefore relates to a cooking container made of cast aluminum intended to operate with an induction cooking appliance which overcomes the drawbacks of the prior art, and in particular in which the electrical properties can be adjusted precisely, as well as 'a method of manufacturing such a container.
  • a culinary container is produced, preferably made of cast aluminum, for an induction cooking appliance, characterized in that a surface of the container is coated with an electrically conductive layer of a cermet consisting of grains. of metal or electroconductive alloy chosen from iron, iron-based alloys and their mixtures, coated with a ceramic material chosen from metallic oxides and their mixtures.
  • iron-based alloys suitable for the present invention mention may be made of iron-chromium, iron-chromium-copper and iron-aluminum-silicon alloys.
  • a preferred alloy is the iron-silicon alloy aluminum (FeSiAl).
  • the electroconductive alloys suitable for the present invention By way of example of the electroconductive alloys suitable for the present invention, mention may be made of the FeSiAl alloy sold by the company H ⁇ GANAS and the 87 Fe-13 Cr alloy.
  • the electrically conductive metal or alloy represents from 60 to 90%, preferably 75 to 85% and generally of the order of 80% by weight of the cermet, while the ceramic represents 40 to 10%, preferably 25 to 15% and generally 20% by weight of the cermet.
  • the metal oxides of the cermets according to the invention are preferably A1 2 0 3 , Ti0 2 , Fe 2 0 3 and their mixtures. Among these oxides, A1 2 0 3 , Fe 2 0 3 and Al 2 0 3 / Ti0 2 mixtures are recommended.
  • the electrically conductive layer of cermet generally has a thickness of between 300 and 900 ⁇ m, preferably between 400 and 800 ⁇ m, and better still between 650 and 800 ⁇ m.
  • the thickness of the layer is adapted, depending on the cermet used, to adjust the resistance of the layer and satisfy the admissible values of the current in the inductor.
  • the electrically conductive layer of cermet is deposited on the external surface of the bottom of the container.
  • electroconductive alloys of the cermets of the invention are commercially available from the companies H ⁇ GANAS, NEYCO-
  • CERAC CERAC, TECPHY and AMSR, among others.
  • FeSiAl alloy is sold under the name SENDUST® by the company H ⁇ GANAS.
  • the coating of the metal or alloy grains with the ceramic can be carried out in a conventional manner by mechanofusion of the appropriate amounts of alloy and ceramic.
  • the deposition of the cermet layer on the chosen surface of the container can be done by any conventional method such as for example by wire gun or spraying by means of a plasma torch.
  • the deposit by plasma torch has the advantage of not damaging the non-stick layer generally deposited on the internal surfaces of the container.
  • the cermet layer is then generally machined to present a smooth surface and optionally coated with a layer of paint or enamel.
  • Figure 1 - a photomicrograph of an electrically conductive layer of FeSiAl cermet coated with A1 2 0 3 , according to the invention, with a magnification of 115;
  • Figure 2 - a photomicrograph of the layer of Figure 1 at a magnification of 463;
  • Figure 3 - a micrograph of an electrically conductive layer of FeSiAl cermet coated with Al 2 0 3 / Ti0 2 at a magnification of
  • Figure 4 - a photomicrograph of the layer of Figure 3 at a magnification of 463;
  • Figure 5 - a photomicrograph of an electrically conductive layer of FeSiAl cermet coated with Fe 2 0 3 at a magnification of 500.
  • a layer of FeSiAl coated with A1 2 0 3 cermet having the following composition was deposited by spraying by means of a plasma torch on the external surface of the bottom of a AS 12 type cast aluminum cooking vessel.
  • FeSiAl 80% by weight At 1 2 ° 3 : 0% by weight
  • the thickness of the deposited layer was 670 ⁇ m.
  • the filing conditions were as follows:
  • Figures 1 and 2 are micrographs of the cermet layer deposited at different magnifications.
  • a layer of cermet was obtained having good adhesion and ensuring good coupling of the container with an induction hob.
  • Ti0 2 / Al 2 0 3 20% by weight (A1 2 0 3 90% by weight / Ti0 2 10% by weight)
  • the layer had a thickness of 600 ⁇ m.
  • a layer was obtained having good adhesion and ensuring good coupling of the container with an induction hob.
  • the layer has an excellent quality of surface appearance and gloss.
  • Figures 3 and 4 are micrographs of the cermet layer at different magnifications.
  • a layer of FeSiAl cermet coated with Fe 2 0 3 was deposited by spraying with a plasma torch on the external surface of the bottom of a AS 12 type cast aluminum cooking vessel.
  • the cermet had the following composition: FeSiAl: 80% by weight Fe 2 0 3 : 20% by weight
  • the thickness of the layer was 780 ⁇ m.
  • a layer is obtained having good adhesion and ensuring good coupling of the container with an induction hob.
  • a layer of Fe cermet coated with A1 2 0 3 was deposited by spraying with a plasma torch on the external surface of the bottom of an AS 12 type cast aluminum container.
  • the cermet had the following composition:
  • the thickness of the layer was between 600 and 800 ⁇ m.
  • a very adherent layer is obtained with good coupling with an induction hob.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Cookers (AREA)

Abstract

The invention concerns a cooking vessel comprising at least a surface coated with an electrically conductive cermet layer formed with grains of an electrically conductive metal or alloy selected among iron, iron-based alloys and mixtures thereof, coated with a ceramic material selected among metal oxides and their mixtures. The invention is applicable to cast aluminium vessels.

Description

Récipient culinaire pour appareil de cuisson par induction et son procédé de fabrication. Culinary container for induction cooking apparatus and its manufacturing process.
La présente invention concerne d'une manière générale un récipient culinaire pour appareil de cuisson par induction et plus particulièrement un récipient en fonte d'aluminium adapté pour la cuisson par induction. Pour subir un chauffage par induction, un récipient culinaire doit présenter des caractéristiques de résistance électrique spécifiques.The present invention relates generally to a culinary container for an induction cooking appliance and more particularly to a container made of cast aluminum suitable for induction cooking. To undergo induction heating, a cooking container must have specific electrical resistance characteristics.
Tout d'abord, la résistance électrique du matériau du récipient doit être relativement faible, faute de quoi les courants induits ne circuleraient pas ou insuffisamment pour assurer un chauffage approprié du récipient et en dessous d'une valeur d'intensité de courant minimaleFirst, the electrical resistance of the container material must be relatively low, otherwise the induced currents would not circulate or insufficiently to ensure proper heating of the container and below a minimum current intensity value.
Imin, le système de sécurité de l'inducteur arrête l'alimentation de l'inducteur.I min , the inductor safety system stops supplying the inductor.
Cependant, cette résistance électrique ne doit pas être trop faible au point que les courants induits dans le récipient ou une partie du récipient dépassent une valeur maximale 1---^ admissible sans détérioration de l'inducteur et que la sécurité de l'inducteur intervienne alors pour couper l'alimentation de l'inducteur.However, this electrical resistance must not be too low to the point that the currents induced in the container or part of the container exceed a maximum value 1 --- ^ admissible without deterioration of the inductor and that the safety of the inductor intervenes. then to cut off the power supply to the inductor.
En conséquence, il convient donc d'ajuster les propriétés électriques du matériau du récipient ou de la partie du récipient où circulent les courants induits de façon à maintenir les courants induits entre les valeurs extrêmes pour un bon fonctionnement du récipient.Consequently, it is therefore necessary to adjust the electrical properties of the material of the container or of the part of the container where the induced currents circulate so as to maintain the induced currents between the extreme values for proper operation of the container.
Les récipients culinaires en fonte d'aluminium classiques ne conviennent pas pour le chauffage par induction. En effet, la résistivité de la fonte d'aluminium est faible. Ainsi, une poêle en fonte d'aluminium ayant un fond d'un diamètre de 15 cm et une épaisseur de 5 mm présente une résistance de 0,27 10"3, valeur inadéquate pour provoquer par elle- même un couplage avec l'inducteur.Classic cast aluminum cookware is not suitable for induction heating. In fact, the resistivity of cast aluminum is low. Thus, a cast aluminum pan having a bottom with a diameter of 15 cm and a thickness of 5 mm has a resistance of 0.27 10 "3 , an inadequate value to cause by itself a coupling with the inductor.
Pour rendre ces récipients en fonte d'aluminium utilisables pour le chauffage par induction, on a proposé d'incorporer dans la plaque de fond des récipients des éléments en matériau magnétique. Une telle solution est décrite entre autres dans les documents FR 2 718 936, GB 2 288 722 et EP 0 677 264. L'adjonction d'éléments en matériau magnétique à la plaque de fond d'un récipient culinaire est difficile et coûteuse à réaliser. En outre, cette technique ne permet pas d'adapter aisément la valeur de la résistance électrique ainsi créée.To make these cast aluminum containers usable for induction heating, it has been proposed to incorporate in the bottom plate of the containers elements made of magnetic material. Such a solution is described inter alia in the documents FR 2 718 936, GB 2 288 722 and EP 0 677 264. The addition of elements of magnetic material to the bottom plate of a culinary container is difficult and costly to carry out. . In addition, this technique does not allow the value of the electrical resistance thus created to be easily adapted.
Le document FR 2 717 062 décrit un procédé pour prolonger la durée de vie d'un ustensile de cuisson en aluminium ou comportant un fond en aluminium et pour permettre leur utilisation sur une plaque de cuisson à induction qui consiste à revêtir la surface extérieure du fond d'une couche d'un alliage plus dur que l'aluminium par projection de gouttelettes d'un métal ou d'un alliage en fusion ferromagnétique. L'emploi d'un métal ou d'un alliage en fusion ferromagnétique déposé par pulvérisation rend difficile le réglage des propriétés électriques du récipient et en particulier la valeur de la résistance électrique.Document FR 2 717 062 describes a method for extending the life of an aluminum cooking utensil or having an aluminum bottom and for allowing their use on an induction hob which consists in coating the outside surface of the bottom a layer of a harder alloy than aluminum by spraying droplets of a metal or a ferromagnetic molten alloy. The use of a metal or a ferromagnetic molten alloy deposited by spraying makes it difficult to adjust the electrical properties of the container and in particular the value of the electrical resistance.
La présente invention a donc pour objet un récipient culinaire en fonte d'aluminium destiné à fonctionner avec un appareil de cuisson par induction qui remédie aux inconvénients de l'art antérieur, et en particulier dans lequel les propriétés électriques peuvent être réglées précisément, ainsi qu'un procédé de fabrication d'un tel récipient.The present invention therefore relates to a cooking container made of cast aluminum intended to operate with an induction cooking appliance which overcomes the drawbacks of the prior art, and in particular in which the electrical properties can be adjusted precisely, as well as 'a method of manufacturing such a container.
Selon l'invention, on réalise un récipient culinaire, de préférence en fonte d'aluminium, pour appareil de cuisson par induction, caractérisé en ce qu'une surface du récipient est revêtue d'une couche électroconductrice d'un cermet constitué par des grains de métal ou d'alliage électroconducteur choisi parmi le fer, les alliages à base de fer et leurs mélanges, enrobés par un matériau céramique choisi parmi les oxydes métalliques et leurs mélanges.According to the invention, a culinary container is produced, preferably made of cast aluminum, for an induction cooking appliance, characterized in that a surface of the container is coated with an electrically conductive layer of a cermet consisting of grains. of metal or electroconductive alloy chosen from iron, iron-based alloys and their mixtures, coated with a ceramic material chosen from metallic oxides and their mixtures.
Parmi les alliages à base de fer convenant pour la présente invention, on peut citer les alliages fer-chrome, fer-chrome-cuivre et fer- aluminium-silicium. Un alliage préféré est l'alliage fer-silicium- aluminium (FeSiAl).Among the iron-based alloys suitable for the present invention, mention may be made of iron-chromium, iron-chromium-copper and iron-aluminum-silicon alloys. A preferred alloy is the iron-silicon alloy aluminum (FeSiAl).
A titre d'exemple des alliages électroconducteurs convenant dans la présente invention, on peut citer l'alliage FeSiAl commercialisé par la Société HÔGANAS et l'alliage 87 Fe-13 Cr. Dans les cermets utiles pour la présente invention, le métal ou l'alliage électriquement conducteur représente de 60 à 90%, de préférence 75 à 85% et généralement de l'ordre de 80% en poids du cermet, cependant que la céramique représente de 40 à 10%, de préférence 25 à 15% et généralement 20% en poids du cermet. Les oxydes métalliques des cermets selon l'invention sont de préférence A1203, Ti02, Fe203 et leurs mélanges. Parmi ces oxydes, on recommande A1203, Fe203 et les mélanges Al203/Ti02.By way of example of the electroconductive alloys suitable for the present invention, mention may be made of the FeSiAl alloy sold by the company HÔGANAS and the 87 Fe-13 Cr alloy. In the cermets useful for the present invention, the electrically conductive metal or alloy represents from 60 to 90%, preferably 75 to 85% and generally of the order of 80% by weight of the cermet, while the ceramic represents 40 to 10%, preferably 25 to 15% and generally 20% by weight of the cermet. The metal oxides of the cermets according to the invention are preferably A1 2 0 3 , Ti0 2 , Fe 2 0 3 and their mixtures. Among these oxides, A1 2 0 3 , Fe 2 0 3 and Al 2 0 3 / Ti0 2 mixtures are recommended.
La couche électroconductrice de cermet a en général une épaisseur comprise entre 300 et 900 μm, de préférence entre 400 et 800 μm, et mieux entre 650 et 800 μm.The electrically conductive layer of cermet generally has a thickness of between 300 and 900 μm, preferably between 400 and 800 μm, and better still between 650 and 800 μm.
Bien évidemment, l'épaisseur de la couche est adaptée, en fonction du cermet utilisé, pour ajuster la résistance de la couche et satisfaire aux valeurs admissibles du courant dans l'inducteur.Obviously, the thickness of the layer is adapted, depending on the cermet used, to adjust the resistance of the layer and satisfy the admissible values of the current in the inductor.
De préférence, la couche électroconductrice de cermet est déposée sur la surface externe du fond du récipient.Preferably, the electrically conductive layer of cermet is deposited on the external surface of the bottom of the container.
Les alliages électroconducteurs des cermets de l'invention sont disponibles dans le commerce auprès des Sociétés HÔGANAS, NEYCO-The electroconductive alloys of the cermets of the invention are commercially available from the companies HÔGANAS, NEYCO-
CERAC, TECPHY et AMSR, entre autres. En particulier l'alliage FeSiAl est commercialisé sous la dénomination SENDUST® par la Société HÔGANAS.CERAC, TECPHY and AMSR, among others. In particular, the FeSiAl alloy is sold under the name SENDUST® by the company HÔGANAS.
L'enrobage des grains de métal ou d'alliage par la céramique peut se faire de manière classique par mécanofusion des quantités appropriées d'alliage et de céramique.The coating of the metal or alloy grains with the ceramic can be carried out in a conventional manner by mechanofusion of the appropriate amounts of alloy and ceramic.
Le dépôt de la couche de cermet sur la surface choisie du récipient peut se faire par tout procédé classique tel que par exemple par pistolet à fil ou pulvérisation au moyen d'une torche plasma. Le dépôt par torche plasma a l'avantage de ne pas détériorer la couche anti-adhérente généralement déposée sur les surfaces internes du récipient.The deposition of the cermet layer on the chosen surface of the container can be done by any conventional method such as for example by wire gun or spraying by means of a plasma torch. The deposit by plasma torch has the advantage of not damaging the non-stick layer generally deposited on the internal surfaces of the container.
La couche de cermet est ensuite généralement usinée pour présenter une surface lisse et éventuellement revêtue d'une couche de peinture ou d'émail.The cermet layer is then generally machined to present a smooth surface and optionally coated with a layer of paint or enamel.
La suite de la description se réfère aux figures annexées, qui représentent respectivement :The following description refers to the appended figures, which respectively represent:
Figure 1 - une microphotographie d'une couche électro- conductrice de cermet FeSiAl enrobé de A1203, selon l'invention, avec un grossissement de 115;Figure 1 - a photomicrograph of an electrically conductive layer of FeSiAl cermet coated with A1 2 0 3 , according to the invention, with a magnification of 115;
Figure 2 - une microphotographie de la couche de la figure 1 à un grossissement de 463;Figure 2 - a photomicrograph of the layer of Figure 1 at a magnification of 463;
Figure 3 - une microphotographie d'une couche électro- conductrice de cermet FeSiAl enrobé de Al203/Ti02 à un grossissement deFigure 3 - a micrograph of an electrically conductive layer of FeSiAl cermet coated with Al 2 0 3 / Ti0 2 at a magnification of
1 15;1 15;
Figure 4 - une microphotographie de la couche de la figure 3 à un grossissement de 463; etFigure 4 - a photomicrograph of the layer of Figure 3 at a magnification of 463; and
Figure 5 - une microphotographie d'une couche électro- conductrice de cermet FeSiAl enrobé de Fe203 à un grossissement de 500.Figure 5 - a photomicrograph of an electrically conductive layer of FeSiAl cermet coated with Fe 2 0 3 at a magnification of 500.
EXEMPLE 1EXAMPLE 1
On a déposé par pulvérisation au moyen d'une torche plasma sur la surface externe du fond d'un récipient culinaire en fonte d'aluminium de type AS 12, une couche de cermet de FeSiAl enrobé de A1203 ayant la composition suivante :A layer of FeSiAl coated with A1 2 0 3 cermet having the following composition was deposited by spraying by means of a plasma torch on the external surface of the bottom of a AS 12 type cast aluminum cooking vessel.
FeSiAl : 80% en poids A12°3 : 0% en poidsFeSiAl: 80% by weight At 1 2 ° 3 : 0% by weight
L'épaisseur de la couche déposée était de 670 μm. Les conditions de dépôt étaient les suivantes :The thickness of the deposited layer was 670 μm. The filing conditions were as follows:
- Plasma Ar 50 Nl/min - H2 10 Nl/min - tension : 55 V - courant : 500 A - puissance : 27,5 kW ;- Plasma Ar 50 Nl / min - H 2 10 Nl / min - voltage: 55 V - current: 500 A - power: 27.5 kW;
- Injecteur de poudre gaz porteur Ar 5 Nl/min - diamètre 2 mm - débit 3 à 4 kg/heure ;- Ar 5 Nl / min carrier gas powder injector - diameter 2 mm - flow rate 3 to 4 kg / hour;
- Temps de tir : 2 minutes environ pour un fond de poêle de- Shooting time: about 2 minutes for a bottom of a pan
15 cm de diamètre ; - Température en cours de tir : 150°C ; - Température de préchauffage : 300°C ;15 cm in diameter; - Temperature during firing: 150 ° C; - Preheating temperature: 300 ° C;
- Vitesse de translation : 25 mm/s ;- Travel speed: 25 mm / s;
- Vitesse de rotation : 2 t/s. Les figures 1 et 2 sont des micrographies de la couche de cermet déposée à différents grossissements.- Rotation speed: 2 t / s. Figures 1 and 2 are micrographs of the cermet layer deposited at different magnifications.
On a obtenu une couche de cermet ayant une bonne adhérence et assurant un bon couplage du récipient avec une plaque à induction.A layer of cermet was obtained having good adhesion and ensuring good coupling of the container with an induction hob.
EXEMPLE 2EXAMPLE 2
On a déposé par pulvérisation au moyen d'une torche plasma sur la surface externe du fond d'un récipient culinaire en fonte d'aluminium de type AS 12 une couche de cermet FeAISi enrobé de Ti02/Al203, ayant la composition suivante :A layer of FeAISi cermet coated with Ti0 2 / Al 2 0 3 , having the composition, was deposited by spraying with a plasma torch on the external surface of the bottom of a AS 12 type cast aluminum cooking vessel. next :
FeSiAl : 80% en poidsFeSiAl: 80% by weight
Ti02/Al203 : 20% en poids (A1203 90% en poids/ Ti02 10% en poids)Ti0 2 / Al 2 0 3 : 20% by weight (A1 2 0 3 90% by weight / Ti0 2 10% by weight)
La couche avait une épaisseur de 600 μm.The layer had a thickness of 600 μm.
Les conditions de dépôt étaient les mêmes que pour l'exemple 1.The deposition conditions were the same as for Example 1.
On a obtenu une couche ayant une bonne adhérence et assurant un bon couplage du récipient avec une plaque à induction. En outre, la couche a une excellente qualité d'aspect de surface et de brillance.A layer was obtained having good adhesion and ensuring good coupling of the container with an induction hob. In addition, the layer has an excellent quality of surface appearance and gloss.
Les figures 3 et 4 sont des micrographies de la couche de cermet à différents grossissements.Figures 3 and 4 are micrographs of the cermet layer at different magnifications.
EXEMPLE 3EXAMPLE 3
On a déposé par pulvérisation au moyen d'une torche plasma une couche de cermet FeSiAl enrobé de Fe203 sur la surface externe du fond d'un récipient culinaire en fonte d'aluminium de type AS 12.A layer of FeSiAl cermet coated with Fe 2 0 3 was deposited by spraying with a plasma torch on the external surface of the bottom of a AS 12 type cast aluminum cooking vessel.
Le cermet avait la composition suivante : FeSiAl : 80% en poids Fe203 : 20% en poidsThe cermet had the following composition: FeSiAl: 80% by weight Fe 2 0 3 : 20% by weight
L'épaisseur de la couche était de 780 μm.The thickness of the layer was 780 μm.
Les conditions de dépôt étaient les mêmes que pour l'exemple 1.The deposition conditions were the same as for Example 1.
On obtient une couche ayant une bonne adhérence et assurant un bon couplage du récipient avec une plaque à induction.A layer is obtained having good adhesion and ensuring good coupling of the container with an induction hob.
EXEMPLE 4EXAMPLE 4
On a déposé par pulvérisation au moyen d'une torche plasma une couche de cermet Fe enrobé de A1203 sur la surface externe du fond d'un récipient en fonte d'aluminium de type AS 12.A layer of Fe cermet coated with A1 2 0 3 was deposited by spraying with a plasma torch on the external surface of the bottom of an AS 12 type cast aluminum container.
Le cermet avait la composition suivante :The cermet had the following composition:
Fe : 80% en poidsFe: 80% by weight
A1203 : 20% en poidsA1 2 0 3 : 20% by weight
L'épaisseur de la couche était comprise entre 600 et 800 μm.The thickness of the layer was between 600 and 800 μm.
Les conditions de dépôt étaient les mêmes que pour l'exemple 1.The deposition conditions were the same as for Example 1.
On obtient une couche très adhérente avec un bon couplage avec une plaque à induction. A very adherent layer is obtained with good coupling with an induction hob.

Claims

REVENDICATIONS
1. Récipient culinaire pour appareil de cuisson par induction, caractérisé en ce qu'au moins une surface du récipient est revêtue d'une couche électroconductrice d'un cermet constitué par des grains d'un métal ou d'un alliage électroconducteur choisi parmi le fer, les alliages à base de fer et leurs mélanges, enrobés par un matériau céramique choisi parmi les oxydes métalliques et leurs mélanges.1. Culinary container for induction cooking appliance, characterized in that at least one surface of the container is coated with an electroconductive layer of a cermet consisting of grains of a metal or of an electroconductive alloy chosen from iron, iron-based alloys and their mixtures, coated with a ceramic material chosen from metal oxides and their mixtures.
2. Récipient selon la revendication 1, caractérisé en ce que les alliages à base de fer sont choisis parmi les alliages fer-chrome, fer- chrome-cuivre et fer-silicium-aluminium. 2. Container according to claim 1, characterized in that the iron-based alloys are chosen from iron-chromium, iron-chromium-copper and iron-silicon-aluminum alloys.
3. Récipient selon la revendication 1 ou 2, caractérisé en ce que les oxydes métalliques sont choisis parmi A1203, Ti02, Fe203 et leurs mélanges.3. Container according to claim 1 or 2, characterized in that the metal oxides are chosen from A1 2 0 3 , Ti0 2 , Fe 2 0 3 and their mixtures.
4. Récipient selon la revendication 3, caractérisé en ce que les oxydes métalliques sont choisis parmi A1203, Fe203 et les mélanges Al203/Ti02.4. Container according to claim 3, characterized in that the metal oxides are chosen from A1 2 0 3 , Fe 2 0 3 and mixtures Al 2 0 3 / Ti0 2 .
5. Récipient selon l'une quelconque des revendications 1 à 4, caractérisé en ce que dans le cermet l'alliage électroconducteur représente 70 à 90% en poids du cermet et la céramique 10 à 30% en poids du cermet.5. Container according to any one of claims 1 to 4, characterized in that in the cermet the electroconductive alloy represents 70 to 90% by weight of the cermet and the ceramic 10 to 30% by weight of the cermet.
6. Récipient selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la couche électroconductrice a une épaisseur comprise entre 300 et 900 μm, de préférence 600 à 900 μm.6. Container according to any one of claims 1 to 5, characterized in that the electrically conductive layer has a thickness of between 300 and 900 μm, preferably 600 to 900 μm.
7. Récipient selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la couche est déposée sur une surface externe du récipient. 7. Container according to any one of claims 1 to 6, characterized in that the layer is deposited on an external surface of the container.
8. Récipient selon la revendication 7, caractérisé en ce que la surface externe est la surface externe du fond du récipient.8. Container according to claim 7, characterized in that the external surface is the external surface of the bottom of the container.
9. Récipient selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il est en fonte d'aluminium.9. Container according to any one of claims 1 to 8, characterized in that it is made of cast aluminum.
10. Procédé de fabrication d'un récipient culinaire, caractérisé en ce qu'il comprend le dépôt sur au moins une partie du récipient d'une couche de cermet telle que définie aux revendications 1 à 9.10. A method of manufacturing a culinary container, characterized in that it comprises depositing on at least part of the container with a layer of cermet as defined in claims 1 to 9.
11. Procédé de fabrication selon la revendication 10, caractérisé en ce que le dépôt s'effectue au moyen d'une torche plasma. 11. The manufacturing method according to claim 10, characterized in that the deposition is carried out by means of a plasma torch.
PCT/FR1999/002419 1998-09-01 1999-10-08 Cooking vessel for induction cooking appliance and method for making same WO2001026522A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9810918A FR2782736B1 (en) 1998-09-01 1998-09-01 CULINARY CONTAINER FOR INDUCTION COOKING APPARATUS AND ITS MANUFACTURING METHOD
PCT/FR1999/002419 WO2001026522A1 (en) 1998-09-01 1999-10-08 Cooking vessel for induction cooking appliance and method for making same
EP99974100A EP1217926A1 (en) 1999-10-08 1999-10-08 Cooking vessel for induction cooking appliance and method for making same
KR1020027004308A KR20020037061A (en) 1999-10-08 1999-10-08 Cooking vessel for induction cooking appliance and method for making same
JP2001529319A JP2003511134A (en) 1999-10-08 1999-10-08 Cooking container of electromagnetic cooker and method of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9810918A FR2782736B1 (en) 1998-09-01 1998-09-01 CULINARY CONTAINER FOR INDUCTION COOKING APPARATUS AND ITS MANUFACTURING METHOD
PCT/FR1999/002419 WO2001026522A1 (en) 1998-09-01 1999-10-08 Cooking vessel for induction cooking appliance and method for making same

Publications (1)

Publication Number Publication Date
WO2001026522A1 true WO2001026522A1 (en) 2001-04-19

Family

ID=26234522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1999/002419 WO2001026522A1 (en) 1998-09-01 1999-10-08 Cooking vessel for induction cooking appliance and method for making same

Country Status (2)

Country Link
FR (1) FR2782736B1 (en)
WO (1) WO2001026522A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782736B1 (en) * 1998-09-01 2000-10-06 Fond Franco Belges CULINARY CONTAINER FOR INDUCTION COOKING APPARATUS AND ITS MANUFACTURING METHOD
DE10025161A1 (en) * 2000-05-23 2001-11-29 Joma Chemicals As Limingen Material and method for producing a corrosion- and wear-resistant layer by thermal peaking
IT1392868B1 (en) * 2009-02-23 2012-04-02 Cantil S R L CONTAINERS OR OTHER MANUFACTURED PRODUCTS FOR USE WITH ELECTROMAGNETIC INDUCTION COOKERS
DE102010016911A1 (en) * 2010-05-12 2011-11-17 Paul Hettich Gmbh & Co. Kg Metallic component, method for producing a metallic component and fitting, furniture and / or household appliance

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108942A (en) * 1964-04-29 1968-04-10 Boeing Co Cermet fluorocarbon composite articles
US4217151A (en) * 1978-01-27 1980-08-12 Victor Company Of Japan, Limited Cermet type magnetic material
EP0580097A1 (en) * 1992-07-20 1994-01-26 HUGHES MISSILE SYSTEMS COMPANY (a Delaware corporation) A method of forming magnetic-cermet dielectric coatings by plasma spraying of composite particles
FR2717062A1 (en) 1994-03-09 1995-09-15 Hede Jean Paul Aluminium@ saucepan with reinforced base
EP0677264A1 (en) 1994-04-15 1995-10-18 VESTA AG & Co. oHG Pot-shaped baking and/or cooking vessel
FR2718936A1 (en) 1994-04-21 1995-10-27 Woo Sung Co Ltd Kitchen utensil with multiple bottom structure and method of making said kitchen utensil.
US5486382A (en) * 1993-05-06 1996-01-23 Hughes Missile Systems Company Method for preparing a cermet-coated article
FR2782736A1 (en) * 1998-09-01 2000-03-03 Fond Franco Belges Induction heated cooking vessel, especially of cast aluminum, has an electrically conductive cermet coating of iron and-or iron alloy particles covered with a metal oxide ceramic

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188415A (en) * 1982-04-27 1983-11-02 有限会社南田総業 Cooking vessel
JPH08206004A (en) * 1994-12-06 1996-08-13 Shinko Kinzoku Kogyo Kk Induction heating cooker and manufacture thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108942A (en) * 1964-04-29 1968-04-10 Boeing Co Cermet fluorocarbon composite articles
US4217151A (en) * 1978-01-27 1980-08-12 Victor Company Of Japan, Limited Cermet type magnetic material
EP0580097A1 (en) * 1992-07-20 1994-01-26 HUGHES MISSILE SYSTEMS COMPANY (a Delaware corporation) A method of forming magnetic-cermet dielectric coatings by plasma spraying of composite particles
US5486382A (en) * 1993-05-06 1996-01-23 Hughes Missile Systems Company Method for preparing a cermet-coated article
FR2717062A1 (en) 1994-03-09 1995-09-15 Hede Jean Paul Aluminium@ saucepan with reinforced base
EP0677264A1 (en) 1994-04-15 1995-10-18 VESTA AG & Co. oHG Pot-shaped baking and/or cooking vessel
FR2718936A1 (en) 1994-04-21 1995-10-27 Woo Sung Co Ltd Kitchen utensil with multiple bottom structure and method of making said kitchen utensil.
GB2288722A (en) 1994-04-21 1995-11-01 Woo Sung Co Ltd Reinforced base plate for cooking vessel
FR2782736A1 (en) * 1998-09-01 2000-03-03 Fond Franco Belges Induction heated cooking vessel, especially of cast aluminum, has an electrically conductive cermet coating of iron and-or iron alloy particles covered with a metal oxide ceramic

Also Published As

Publication number Publication date
FR2782736A1 (en) 2000-03-03
FR2782736B1 (en) 2000-10-06

Similar Documents

Publication Publication Date Title
US4808490A (en) Plasma sprayed film resistor heater
EP0808380B1 (en) Clad plastic particles suitable for thermal spraying
EP0503698B1 (en) Method for depositing braze alloy to base metal surfaces using electric discharge process
FR2882240A1 (en) Enamelled article, especially for heating food, has layer of aluminum to enhance adhesion of enamel layer to ferromagnetic supporting surface
FR2763463A3 (en) Heating food vessel
CN114645237A (en) Cooking utensil and preparation method thereof
CN114642361A (en) Cooking utensil and preparation method thereof
WO2001026522A1 (en) Cooking vessel for induction cooking appliance and method for making same
EP1217926A1 (en) Cooking vessel for induction cooking appliance and method for making same
CN114645238A (en) Cooking utensil and preparation method thereof
EP1196070B1 (en) Induction heated cooking vessel
KR102059628B1 (en) Aluminum spray method of steel plate and cooking vessel of steel plate using the same
CN111205676B (en) Method and system for forming quasi-crystal coating and pot
CN111139433A (en) Pot, preparation method thereof and cooking utensil
CN217723269U (en) Pan and electromagnetism stove subassembly
CN110754915B (en) Frying pan and preparation method thereof
CN115142003B (en) Alloy wire, application method thereof and cooking utensil
WO1995021802A1 (en) Induction heating substrate for ceramic or vitroceramic containers
CN114052505B (en) Non-stick cookware and method of making same
CN110756816B (en) Method and system for forming quasi-crystal coating and pot
CN114381681A (en) Cooking utensil and preparation method thereof
CN214258924U (en) Cooking utensil
JPH07255607A (en) Cooking apparatus
FR2784280A1 (en) Non-deformable heat conductive utensil, article or vessel base, e.g. for food cooking vessel or utensil, iron or hot wire cutter, is produced by coating with a thick ceramic-metal composite layer
FR2872692A1 (en) Enamelled article provided with an enamelled coating compatible with induction heating, notably for culinary purposes

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1999974100

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1020027004308

Country of ref document: KR

ENP Entry into the national phase

Ref country code: JP

Ref document number: 2001 529319

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1020027004308

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1999974100

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1020027004308

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1999974100

Country of ref document: EP