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WO2018211528A2 - Ustensile de cuisson et son procédé de fabrication - Google Patents

Ustensile de cuisson et son procédé de fabrication Download PDF

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Publication number
WO2018211528A2
WO2018211528A2 PCT/IN2018/050314 IN2018050314W WO2018211528A2 WO 2018211528 A2 WO2018211528 A2 WO 2018211528A2 IN 2018050314 W IN2018050314 W IN 2018050314W WO 2018211528 A2 WO2018211528 A2 WO 2018211528A2
Authority
WO
WIPO (PCT)
Prior art keywords
cooking utensil
bottom portion
metal
metal layer
predetermined material
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.)
Ceased
Application number
PCT/IN2018/050314
Other languages
English (en)
Other versions
WO2018211528A3 (fr
WO2018211528A8 (fr
Inventor
Pareshkumar Parshottambhai THUMMAR
Darshan Narendra CHUDGAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agaso Technologies Pvt Ltd
Original Assignee
Agaso Technologies Pvt Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agaso Technologies Pvt Ltd filed Critical Agaso Technologies Pvt Ltd
Publication of WO2018211528A2 publication Critical patent/WO2018211528A2/fr
Publication of WO2018211528A3 publication Critical patent/WO2018211528A3/fr
Publication of WO2018211528A8 publication Critical patent/WO2018211528A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • C23C4/08—Metallic material containing only metal elements
    • 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
    • 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
    • C23C4/18—After-treatment

Definitions

  • the embodiments herein generally relate to a cooking utensil, more particularly but not exclusively to a cooking utensil having at least one of a bottom surface and a body made of a multilayer material and adapted for a gas burner, hot plate, electric stove, fuel stove and an induction cooking device oil-free cooking and less oil cooking and a manufacturing method thereof.
  • Cooking utensils are basic tool used daily in human life. Despite having different shapes of cookware, ranging from a barbecue grill to a fry pan, the basic elements of a cookware are two surfaces: one for receiving heat from a heat source, and the other for heating the food. Heat energy generated either from electricity, or a burning flame, is transferred from the source to the heat-receiving surface of the cookware, which is conducted through the cookware and transferred to the food.
  • a conventional cooking utensil of a type which is subjected to a magnetic field induced by an exciter and heated by the heat appearing as a result of eddy-current loss is available.
  • the conventional cooking utensils of the aforementioned type are made of iron, e.g. cast iron or enameled iron, or 18Cr-8Ni or 18Cr stainless steel. However, they are heavier than those made of other materials. Moreover, the utensils made of iron are liable to rusting, and those made of enameled iron are likely to have the enamel separated from the iron.
  • Aluminum has been used since many years for making a variety of cooking utensils, and for making a cooking utensil for heating by an electromagnetic induction, too. It comprises a vessel made of aluminum and having a bottom to which a different magnetic metal is bonded. It, however, still poses a lot of drawbacks. The metal bonded to the bottom is liable to rusting and separation from the aluminum body. The bonding of the metal makes the utensil awkward in appearance and expensive to manufacture. Moreover, it is not comparable to a cooking pan of iron or enameled iron in heating efficiency unless its magnetic metal layer has a considerably large thickness.
  • the principal object of the embodiments disclosed herein is to provide a cooking utensil having at least one of a bottom surface and a body made of a multilayer material.
  • Another object of the embodiments disclosed herein is to provide a cooking utensil including at least one of a bottom and a full body made up of different metals for improved heat conductivity, energy efficiency, oil-free or less-oil cooking, appearance, wear resistance and corrosion resistance.
  • Yet another object of the embodiments disclosed herein is to provide a cooking utensil to be used on a gas stove, hot plate, electric stove, fuel stove and an induction cooking device and also for oil-free or less oil cooking.
  • Still another object of the embodiments disclosed herein is to provide a method of manufacturing a cooking utensil having at least one of a bottom surface and a body made of a multilayer material.
  • FIG. 1 depicts a front view of a cooking utensil having at least one of a bottom surface and a body made of a multilayer material of predetermined materials, according to an embodiment of the invention as disclosed herein;
  • FIG. 2 depicts a top view of a cooking utensil having at least one of a bottom surface and a body made of a multilayer material of predetermined materials, according to an embodiment of the invention as disclosed herein;
  • FIG. 3 is a flowchart depicting a method of manufacturing a cooking utensil having at least one of a bottom surface and a body made of a multilayer material of predetermined materials, according to an embodiment of the invention as disclosed herein.
  • the embodiments herein achieve a cooking utensil having at least one of a bottom surface and a body made of a multilayer material. Further, the embodiments herein achieve a cooking utensil including at least one of a bottom and a full body made up of different metals for improved heat conductivity, energy efficiency, oil-free or less-oil cooking, appearance, wear resistance and corrosion resistance. Furthermore, the embodiments herein achieve a cooking utensil to be used on a gas stove, hot plate, electric stove, fuel stove and an induction cooking device and also for oil-free or less oil cooking. Referring now to the drawings, and more particularly to FIGS. 1 through 4, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
  • FIGS. 1 and 2 depict a front view and a top view of a cooking utensil having at least one of a bottom surface and a body made of a multilayer material of predetermined materials, according to an embodiment of the invention as disclosed herein.
  • the cooking utensil 100 also referred to as cookware in this description
  • the body 102 includes a body 102, a base portion 104 (also referred as bottom surface or bottom portion of cooking utensil), a side portion 106, and at least one metal layer 108 applied to at least one of the base portion 104 and the body 102.
  • the cooking utensil 100 is made of any shape and size.
  • the cooking utensil 100 includes the body 102 having the base portion 104 and the side portion 106 extending from the base portion 104.
  • the bottom portion 104 and the side portion 106 together define an inner surface (not shown) adapted to receive food and an outer surface (not shown) adapted to be exposed to a heat source.
  • the cooking utensil 100 is made up of a first predetermined material.
  • the first predetermined material may be selected but not limited to at least one of copper, aluminum, iron and stainless steel.
  • the cooking utensil 100 further includes the at least one metal layer 108.
  • the metal layer 108 is disposed on the outer surface of the cooking utensil 100.
  • the metal layer 108 may be disposed on the inner surface of the cooking utensil 100 or may be sprayed on both side of utensil bottom and body or even same process can be applied before drawing/forming the cooking utensil.
  • the metal layer 108 is deposited on the cooking utensil by an arc spray.
  • the metal layer 108 is an arc-sprayed layer of a second predetermined material.
  • the second predetermined material is selected from but not limited to at least one of, ferromagnetic metal, a thermally conductive metal, scratch resistant metal, corrosion resistant metal and a combination thereof. Further, the second predetermined material includes but not limited to at least one of aluminum, copper, stainless less, carbon steel, SS430, 400-series ferritic stainless steel, and combination thereof.
  • the metal layer 108 is sprayed on at least one of the bottom portion 104 and the body 102 for a predetermined thickness of 0.025mm to 10mm.
  • the metal layer 108 is disposed on at least one of the bottom surface 104 and the body 102 in at least one of circular, a spiral, a concentric circular manner and a combination thereof.
  • FIG. 3 is a flowchart depicting a method of manufacturing a cooking utensil having at least one of a bottom surface and a body made of a multilayer material of predetermined materials, according to an embodiment of the invention as disclosed herein.
  • a method 300 of manufacturing a cooking utensil having at least one metal layer is provided.
  • the method includes providing a cooking utensil 100 having a body 102, said body 102 having a bottom portion 104 and a side portion 106 extending from said bottom portion 104 and formed of a first predetermined material.
  • the method includes roughening and cleaning said at least one of said bottom portion 104 and said body 102 of said cooking utensil.
  • the method includes applying at least one metal layer 108 of second predetermined material onto said roughened and cleaned said at least one of said bottom portion 104 and said body 102.
  • the method includes polishing said metal layer 108.
  • the cooking utensil 100 is initially grit blasted using alumina to attain a predetermined surface roughness.
  • the grit blasting process includes at least one blasting gun mounted on a horizontal reciprocation device to cover entire bottom portion 104 and the body 102 of cooking utensil 100.
  • the cooking utensil 100 is rotated on a turn table at preset RPM.
  • the process of blasting operation is initiated from a home position and the reciprocation starts the blasting process at predefined speed.
  • the reciprocation speed is synchronized with the turn table speed.
  • Blasting process starts to blast the cooking utensil bottom portion 104 and the body 102 with blasting grit includes but not limited to A1203 (alumina) grit of 40 mesh.
  • a pressure of 25 to 100 psi, preferably 30 psi is applied for blasting the cooking utensil bottom portion 104 and the body 102.
  • the blasting gun to cooking utensil standoff distance is maintained in between 5mm to 1000mm, preferably 150mm.
  • angle for grit attack of the blasting gun to cookware bottom portion 104 and the body 102 is maintained in between 30°-90°, preferably 90° angle of attack.
  • the surface roughness of the blasted surface is in the range of 2.5 - 25 microns, preferably 6 microns for greater adhesion strength of coating.
  • a masking plate may be used for restricting blasting area and/or creating design patterns.
  • the thermal spraying is an arc spraying wherein at least two wires, which are consumable electrodes, are drawn from spools to form a liquid droplet due to arc heating and are accelerated by compressed air.
  • the arc spraying may further include at least one spray gun (not shown) having a nozzle to dispose the molten metal.
  • the jet of air acts to atomize the molten wire and to propel the finely atomized particle to the substrate.
  • the two wires used may be made of at least one of same material or different materials, thereby pseudo-alloy coatings can be produced by this type of arc spraying.
  • the current applied for spraying ranges between 150-400amps.
  • the current required for this process is determined by other operating parameters such as arc current, primary atomizing gas pressure, and secondary atomizing gas pressure on spray pattern size, spray pattern flatness, spray pattern eccentricity, and coating deposition rate.
  • the pressure of dry-air is in the range of 20 to 100 psi.
  • a voltage applied on the wires may range from 19 V to 42 V.
  • a wire-feed-rate may be varied from 25 to 250gm/minute.
  • the arc gun to cooking utensil bottom portion's 104 standoff distance is maintained in between 10 to 1000 mm, preferably 150mm.
  • a wire diameter used for spraying may range between 0.8- 2.0mm, preferably 1.6mm.
  • At least one of the blasted cooking bottom portion 104 and the body 102 may be exposed to arc spraying to apply at least one metal layer, preferably a ferromagnetic material layer.
  • the at least one of bottom portion 104 and the body 102 is coated with at least one layer of ferromagnetic material to enable the cooking utensil 100 to be used for induction cooking device.
  • the arc spraying process includes a supply of dry compressed air at 75psi. Further, the current and voltage applied during the process are 300 Amperes and 30-36 V respectively. The relatively humidity during the arc spraying process is kept less than 85%.
  • the standoff distance between the spray gun and the cooking utensil ranges from 10 to 1000 mm, preferably 150mm.
  • the feed rate at which the metal is applied to the cooking utensil bottom portion 104 and the body 102 ranges between 75-85 g/min.
  • the metal is coated (coating thickness) for about 0.025 to 10mm, preferably 0.2 mm.
  • the coating thickness may be measured using an electronic thickness gauge.
  • the cooking utensil 100 is air-cooled to room temperature to reduce internal stresses in the coating.
  • the blasted cooking bottom portion 104 and the body 102 may be exposed to arc spraying by applying at least one metal layer of thermal conductive material layer. At least one of the cooking utensil bottom portion 104 and the body 102 is coated with at least one layer of thermal conductive material layer, for example aluminum.
  • the arc spray process is carried out by using arc spray with wet type dust collector machine and the coating is performed in a closed area so as to reduce reactions between sprayed material and the ambient air, which in turn would lead to surface oxidation.
  • the arc spraying process includes a supply of dry compressed air at 85 psi. Further, the current and voltage applied during the process are 200 Amperes and 30-33 V respectively.
  • the relatively humidity during the arc spraying process may kept less than 85%.
  • the standoff distance between the spray gun and the cooking utensil ranges from 10 to 1000 mm, preferably 150mm.
  • the feed rate at which the metal is applied to the cooking utensil bottom portion 104 and the body 102 ranges between 60-65 g/min.
  • the metal is coated (coating thickness) for about 0.025 to 10mm, preferably 0.2 mm. The coating thickness is measured using the electronic thickness gauge. After coating, the cooking utensil 100 is air- cooled to room temperature to reduce internal stresses in the coating.
  • the blasted cooking bottom portion 104 and the body 102 is exposed to arc spraying by applying at least one layer of thermal conductive material layer, for example pure copper.
  • the arc spraying process includes a supply of dry compressed air at 95psi. Further, the current and voltage applied during the process are 200 Amperes and 30-33 V respectively. The relative humidity during the arc spraying process is kept less than 85%.
  • the standoff distance between the spray gun and the cooking utensil ranges from 10 to 1000 mm, preferably 150mm. Further, the feed rate at which the metal is applied to the cooking utensil bottom portion 104 and the body 102 ranges between 90-95 g/min.
  • the metal is coated (coating thickness) for about 0.025 to 10 mm, preferably 0.2mm. The coating thickness is measured using the electronic thickness gauge. After coating, the cooking utensil 100 is air-cooled to room temperature to reduce internal stresses in the coating.
  • the arc sprayed cooking utensil 100 having at least one layer of any material is subjected to a polishing process.
  • the cooking utensil 100 is held using fixture spindle, which has vacuum pump to provide grip.
  • a polishing head rotates is rotated in a range between 300 -2800 RPM, preferably at 2000 RPM.
  • the polishing head is mounted to a tool holder having an indexing system.
  • the polishing head or the cutting tool cuts the sprayed material surface to get an even surface.
  • the tool is indexed automatically.
  • an additional pneumatic tool will polish the sprayed material rough edges of the cooking utensil bottom portion 104 and the body 102, and it operates automatically while the surface cutting operation is in process.
  • the tool speed and pressure is operated in accordance with predetermined parameters like, time, speed, polishing compound, turning tool, buffing wheels, buffing compounds etc to get desired finish, pattern and design.
  • the invention has been developed primarily for use in cooking utensil application and is described with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use. The skilled person in the art may apply all such process, parameters and the same process of making such multilayer utensils before forming or drawing the component. Further, the embodiments herein may be used on sheet metal or sheet circle before forming the utensil.

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

Abstract

La présente invention concerne un ustensile de cuisson 100 comprenant un corps 102 ayant une partie inférieure 104 et une partie latérale 106 s'étendant à partir de la partie inférieure 104 et formée d'un premier matériau prédéfini. La partie inférieure 104 et la partie latérale 106 définissent une surface interne destinée à recevoir des aliments et une surface externe 108 destinée à être exposée à une source de chaleur. L'ustensile de cuisson comprend en outre au moins une couche métallique 108 pulvérisée sur la partie inférieure 104 et/ou le corps 102. La couche métallique 108 est une couche pulvérisée à l'arc d'un second matériau prédéfini. Le second matériau prédéfini est choisi parmi un métal ferromagnétique et/ou un métal thermoconducteur et/ou un métal résistant aux rayures et/ou un métal résistant à la corrosion et une combinaison de ceux-ci. En outre, les modes de réalisation de la présente invention concernent également un procédé de formation d'un ustensile de cuisson multicouche.
PCT/IN2018/050314 2017-05-17 2018-05-17 Ustensile de cuisson et son procédé de fabrication Ceased WO2018211528A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201741017368 2017-05-17
IN201741017368 2017-05-17

Publications (3)

Publication Number Publication Date
WO2018211528A2 true WO2018211528A2 (fr) 2018-11-22
WO2018211528A3 WO2018211528A3 (fr) 2019-02-14
WO2018211528A8 WO2018211528A8 (fr) 2019-06-27

Family

ID=64273488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2018/050314 Ceased WO2018211528A2 (fr) 2017-05-17 2018-05-17 Ustensile de cuisson et son procédé de fabrication

Country Status (1)

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WO (1) WO2018211528A2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5753313A (en) * 1996-12-26 1998-05-19 Sheh Jone Enterprises Co., Ltd. Method for coating metal cookware
US7942288B2 (en) * 2004-07-14 2011-05-17 Raymond Qin Cooking utensils with metallic non-stick coating and methods for making the same
TWI466650B (zh) * 2010-11-08 2015-01-01 Ind Tech Res Inst 鍋具及其製造方法

Also Published As

Publication number Publication date
WO2018211528A3 (fr) 2019-02-14
WO2018211528A8 (fr) 2019-06-27

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