WO2013084949A1 - Procédé de fabrication d'un corps poreux métallique, et filtre à graisse - Google Patents

Procédé de fabrication d'un corps poreux métallique, et filtre à graisse Download PDF

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Publication number
WO2013084949A1
WO2013084949A1 PCT/JP2012/081538 JP2012081538W WO2013084949A1 WO 2013084949 A1 WO2013084949 A1 WO 2013084949A1 JP 2012081538 W JP2012081538 W JP 2012081538W WO 2013084949 A1 WO2013084949 A1 WO 2013084949A1
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WO
WIPO (PCT)
Prior art keywords
silicon carbide
grease filter
electroplating
nickel
plating
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PCT/JP2012/081538
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English (en)
Japanese (ja)
Inventor
未紗 佐藤
志剛 洪
超 鄒
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株式会社イノアックコーポレーション
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Publication of WO2013084949A1 publication Critical patent/WO2013084949A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B01D39/2051—Metallic foam
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1655—Process features
    • C23C18/1657—Electroless forming, i.e. substrate removed or destroyed at the end of the process
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1655—Process features
    • C23C18/1662—Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/08—Perforated or foraminous objects, e.g. sieves
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing

Definitions

  • the present invention relates to a method for producing a metal porous body and a grease filter made of the metal porous body.
  • metal powder is attached to a highly permeable resin skeleton with a three-dimensional network structure such as urethane foam with a binder, and then heated to a high temperature in an inert atmosphere.
  • a method of obtaining a porous metal body having a three-dimensional network structure is known by a method of bonding and a method of depositing a metal layer on the surface of a resin skeleton by performing electroplating after electroless plating or conductive treatment. These are used as a heat-resistant filter that captures harmful components in oil mist, smoke, or exhaust gas from an internal combustion engine.
  • a porous metal body having a three-dimensional network structure used as a grease filter for kitchens is exposed to moisture and salt contained in the oil mist for a long period of time. Since it is immersed in an aqueous alkaline cleaning solution, it is plated with nickel or a nickel-based alloy, which is a metal with high corrosion resistance and rust resistance (particularly corrosion resistance in the presence of chlorine ions and moisture) and high alkali resistance on such metal porous bodies. It is known to do.
  • Patent Document 1 discloses a method of manufacturing an electrode by mixing metal powder into a foam before foaming, pyrolyzing the foam and sintering the metal powder.
  • Patent Document 2 discloses that electroplating is performed after electroless plating is applied to a resin skeleton among those using electroplating.
  • Patent Document 3 discloses that electroplating is performed after a conductive paint is applied to a resin skeleton among those using electroplating.
  • Patent Document 4 the three-dimensional network structure described in the above-mentioned documents and the like is provided for the purpose of providing a grease filter that sufficiently captures oil and dust in the exhaust of a kitchen facility and is easy to handle. It is disclosed that a grease filter is formed using a porous metal body having a metal material of Ni, Cu, or Fe, and foamed resin is impregnated with a metal slurry or Ni-plated and fired.
  • Patent Document 5 for the purpose of providing a grease filter having a long lifetime, the surface has a NiO film or an oxide film composed of one or two kinds of SiO 2 , Al 2 O 3 , and CaO.
  • a grease filter made of a porous metal body of Ni or Ni alloy having a three-dimensional network structure is disclosed.
  • JP 53-067836 A JP-A-57-174484 JP-A 61-223196 JP-A-6-285317 JP-A-8-57226
  • nickel-made grease filters are usually manufactured to have an apparent specific gravity of about 400 kg / m 3, and as such, they were used as 500 ⁇ 500 mm square kitchen grease filters. In this case, the weight is about 1 kg, which is a burden on the operator when the grease filter is attached, detached, transported and washed.
  • an object of the present invention is to provide a grease filter having a sufficient bending strength and oil removing performance while reducing the apparent specific gravity in order to reduce the weight of the grease filter.
  • a conductive metal or electroless plating treatment is applied to an open-cell resin foam having a three-dimensional network structure, which is a porous metal body used in a grease filter, the cell membrane is removed and only the cell skeleton is provided. Then, in the manufacturing method of the porous metal body formed by performing electroplating, in the step of performing electroplating, the matrix in the plating solution is nickel, and the silicon carbide is suspended in the plating solution to be electrically There is provided a method for producing a porous metal body, characterized by performing plating.
  • the apparent specific gravity can be reduced without reducing the oil removal performance and bending strength of the metal porous body used in the grease filter, and as a result, it has low weight and high oil removal performance.
  • strength with respect to a bending load can be provided.
  • the step of performing electroplating may include a step of performing nickel electroplating, a step of performing electroplating after suspending silicon carbide in the plating solution, and a step of performing nickel electroplating thereafter.
  • a step of performing nickel electroplating since a composite plating film layer in which nickel and silicon carbide are sufficiently co-deposited can be formed up to the inside of the metal porous body, the strength against bending load is increased and the skeleton surface of the metal porous body is plated with nickel. Since a layer can be formed, a method for producing a metal porous body with better oil removal can be provided.
  • electroplating may be performed by suspending the plating solution so that the content of silicon carbide is 30 to 200 g / liter. According to this, if the content of silicon carbide in the plating solution is within this range, it is possible to provide a method for producing a porous metal body having higher oil removal performance and higher strength against bending load.
  • a grease filter comprising a three-dimensional network metal porous body provided with a composite plating film layer in which silicon carbide is co-deposited in a nickel plating film.
  • the grease filter which consists of a metal porous body with low weight, high oil removal performance, and high intensity
  • the composite plating film layer may be formed on a nickel plating layer that does not eutect silicon carbide, and a nickel plating layer that does not eutect silicon carbide may be further formed on the composite plating film layer.
  • the grease filter which consists of a metal porous body which has higher oil removal performance and has higher intensity
  • it may be characterized by being made of a porous metal body having a content of eutectoid silicon carbide of 0.8 to 8% by weight. According to this, when the silicon carbide content (wt%) is in this range, it is possible to provide a grease filter made of a porous metal body having higher oil removal performance and higher strength against bending load. .
  • a porous metal body having an apparent specific gravity of 0.15 or more and less than 0.2. According to this, it is possible to provide a grease filter made of a metal porous body having high oil removal performance, high strength against bending load, and low weight.
  • the present invention is a porous metal body used for a grease filter, in which a cell membrane is removed, and a three-dimensional network structure urethane foam having only a cell skeleton is subjected to electroplating or electroplating, followed by electroplating. Relates to a method for producing a metal porous body formed by the method described above.
  • the metal porous body according to the present invention can be produced by a known method. For example, using urethane foam or melamine foam, which is an open-cell resin foam having a three-dimensional network structure without cell membrane, and performing electroplating after conducting this, or directly depositing metal by electroless plating Using a combination of these methods, such as electroplating after electroless plating, metal is attached to a three-dimensional network structure such as urethane foam or melamine foam, which is an open-cell resin foam, and then placed under a reducing atmosphere. And firing to obtain a porous metal body having only a metal skeleton.
  • the open-cell resin foam is preferably a urethane foam because it is easy to adjust the number of cells (cell size), which will be described later, or to have an appropriate thickness in the formation process.
  • the urethane foam is obtained from a urethane foam raw material containing an isocyanate, a polyol and a foaming agent. At the same time as the polymerization reaction of the isocyanate and polyol proceeds, the cells are formed by the foaming gas generated by the foaming agent.
  • the polyol may be any one that is normally used as a urethane foam raw material, and examples thereof include polyoxyalkylene polyols, vinyl polymer-containing polyoxyalkylene polyols, polyester polyols, polyoxyalkylene polyester ester block copolymer polyols, and the like. It is done.
  • the isocyanate may be any one that is normally used as a urethane foam raw material, and examples thereof include aromatic isocyanate, aliphatic isocyanate, and alicyclic isocyanate.
  • the foaming agent is used to form cells by foaming in the mixture during the polymerization reaction, and may be any of those usually employed as a urethane foam raw material. For example, water, pentane, cyclopentane, methylene chloride. , Carbon dioxide gas, and the like, and these may be used alone or in combination of two or more.
  • additives such as catalysts, foam stabilizers, flame retardants, and foam breakers that are commonly used as urethane foam raw materials can be used.
  • Urethane foam having a three-dimensional network structure without a cell membrane can be obtained by subjecting the urethane foam to film removal treatment.
  • the film removal treatment may be any process that is normally used as a treatment method capable of removing the cell membrane.
  • a treatment method that removes the cell membrane with a blast of combustion gas, an alkali hydrolysis treatment method, or a urethane foam formation process For example, a treatment method that removes the cell membrane with a blast of combustion gas, an alkali hydrolysis treatment method, or a urethane foam formation process.
  • the porous metal body used for the grease filter according to the present invention thus obtained has a three-dimensional network structure without a cell membrane, and this three-dimensional network structure forms a three-dimensionally continuous space. . Oil in the oil mist is sucked from the suction surface of the grease filter, collides with the metal skeleton while passing through the space, and most of the oil in the oil mist is removed before reaching the exhaust surface. It becomes.
  • nickel or a nickel alloy is used as the metal as the base material of the porous metal body used in the grease filter. These are preferable because they are alkali- and acid-resistant and chemically stable metals.
  • an alkaline agent such as caustic soda that has a cleaning effect.
  • the filter is required not to be attacked by alkali even when immersed for a long time, and nickel or a nickel alloy is preferable in this respect.
  • electroplating is performed using nickel as the main matrix in the plating solution.
  • electroplating is performed by suspending (dispersing) silicon carbide in the plating solution.
  • silicon carbide co-deposits with nickel on the surface of the metal skeleton of the metal porous body of the three-dimensional network structure, the three-dimensional network having a composite plating film layer in which the silicon carbide is co-deposited in the nickel plating film.
  • a porous metal body having a structure is obtained.
  • the apparent specific gravity can be reduced without reducing the bending strength of the porous metal body used for the grease filter.
  • the electroplating process is performed by a known method.
  • fine particles of silicon carbide (average particle diameter of 1 to 10 ⁇ m: preferably 3 to 4 ⁇ m) are dispersed in a nickel plating solution and co-deposited (electrodeposition) on the skeleton surface.
  • electroplating is performed with stirring so that silicon carbide does not settle.
  • the film thickness of the composite plating film layer is preferably 5 to 25 ⁇ m.
  • nickel electroplating may be further performed in order to improve the oil removal performance and for finishing in appearance.
  • the eutectoid silicon carbide content is 0.8 to 8% by weight.
  • Such a grease filter has a small specific gravity and high strength against bending load, so that the thickness of the porous metal body can be reduced, and the overall weight of the grease filter can be reduced. Easy handling during cleaning. Further, the bending strength of the grease filter can be enhanced by the high-strength metal porous body, and a grease filter that is not damaged even by uneven processing on the surface of the grease filter can be provided.
  • the number of cells (cells / 25 mm) of the metal porous body used in the grease filter is correlated with the number of cells (cells / 25 mm) of the open-cell resin foam having a three-dimensional network structure without a cell membrane.
  • the number of cells of the metal porous body is measured according to a method based on JIS K6400-1. The smaller the number of cells, the larger the cell diameter, so the pressure loss decreases, but the oil removal rate tends to decrease. For this reason, the number of cells is preferably 10 to 40 cells / 25 mm, and particularly preferably 15 to 35 cells / 25 mm. If the number of cells is less than 15, the oil removal rate decreases too much, and if the number of cells exceeds 40, the pressure loss becomes too large.
  • the thickness (mm) of the porous metal body used for the grease filter is correlated with the thickness (mm) of the open-cell resin foam having a three-dimensional network structure without a cell membrane.
  • the thickness is preferably 3 to 30 mm, and particularly preferably 5 to 27 mm. If the thickness is less than 3, the oil removal rate decreases too much, and if the thickness exceeds 30, the pressure loss becomes too large.
  • a relatively thin thickness is preferable in that it is difficult to cause uneven plating in the thickness direction of the metal porous body. In that case, a plurality of porous metal bodies may be stacked to form a grease filter so that the oil removal rate does not decrease.
  • the composition of the plating solution includes nickel sulfate, nickel chloride, boric acid, saccharin, and silicon carbide particles. Preferred ranges are as follows.
  • the content of silicon carbide in the plating solution is 50 to 200 g / liter.
  • the current density during electroplating is 3 to 6 A / dm 2.
  • the temperature of the plating bath is 50-60 ° C
  • the pH of the plating solution is 4.0 to 4.6.
  • the apparent specific gravity of the metal porous body may be less than 0.2, or may be 0.15 or more and less than 0.20.
  • nickel electroplating is first performed in a nickel plating bath that does not suspend silicon carbide in the plating solution, and then electroplated in a Ni-SiC plating bath in which silicon carbide is suspended in the plating solution.
  • Plating may be performed, and then nickel electroplating may be performed in a nickel plating bath that does not suspend silicon carbide in the plating solution.
  • three electroplating tanks are prepared, and the open cell resin foam having a three-dimensional network structure including only the cell skeleton from which the cell membrane is removed is placed in the first plating tank, and used as a nickel plating bath.
  • Perform electroplating then place it in a second plating tank in which silicon carbide is suspended, perform electroplating as a Ni-SiC plating bath, then place it in the third plating layer, Electroplating may be performed as a plating bath.
  • a nickel plating layer that does not eutect silicon carbide on the innermost side in a skeleton cross-sectional view, the outside of the nickel plating layer
  • a porous metal body in which a composite plating film layer in which silicon carbide is co-deposited in a nickel plating film and a nickel plating layer in which silicon carbide is not co-deposited is formed outside the composite plating layer.
  • the composite plating film layer is formed on a nickel plating layer that does not eutect silicon carbide, and a nickel plating layer that does not eutect silicon carbide is further formed on the composite plating film layer, or
  • the composite plating film layer is a porous metal body formed by being sandwiched between nickel plating layers that do not co-deposit silicon carbide.
  • the first nickel electroplating Prior to electroplating in the Ni-SiC plating bath, which is the second plating, the first nickel electroplating is performed to form a composite plating film layer in which nickel and silicon carbide are co-deposited sufficiently to the inside of the metal porous body. become able to. As a result, the strength becomes higher with respect to the bending load. Further, by performing nickel electroplating for the third time, a nickel plating layer can be formed on the surface of the metal skeleton of the metal porous body, so that a metal porous body with better oil removability can be obtained.
  • the total plating time for the first and third nickel electroplating is less than or equal to the electroplating time in the second Ni—SiC plating bath, and is adjusted as appropriate within that range. For example, when the metal porous body is thin and needs strength, the electroplating time may be increased in the second Ni—SiC plating bath. In addition, when it is desired to improve the oil removal performance and the appearance, it is preferable to extend the time of the third nickel electroplating. A suitable metal porous body can be obtained by appropriately adjusting the length of the plating time.
  • the grease filter according to the present invention is usually a square of about 500 ⁇ 500 mm square, and is used in a square filter frame.
  • Example 1 Conductive treatment is applied to urethane foam (number of cells: 27/25 mm) from which the flat cell membrane has been removed, nickel electroplating is performed, then nickel electroplating is performed with a plating solution in which silicon carbide is dispersed, and further finishing is performed. Nickel electroplating was performed as plating. Thereafter, firing (900 ° C.) in a reducing atmosphere, a metal porous body having a thickness of 10 mm (millimeters), an apparent specific gravity of 0.18, a size of 495 ⁇ 495 mm square, and a weight of 440 g (grams), A grease filter was obtained.
  • the first and third nickel plating baths are as follows. Composition of plating solution: nickel sulfate, nickel chloride, boric acid, saccharin Current density: 4 A / dm 2 Plating bath temperature: 55 ° C Plating solution pH: 4.3
  • Ni—SiC plating bath in the second plating is as follows.
  • Plating solution composition nickel sulfate, nickel chloride, boric acid, saccharin, Silicon carbide particles (average particle size 3.5 ⁇ m)
  • Current density 4 A / dm 2
  • Plating bath temperature 55 ° C
  • Plating solution pH 4.3 Content of silicon carbide in the plating solution 100 g / liter
  • plating was performed so that the ratio of each plating time in the first to third plating was 10% for the first time, 77% for the second time, and 13% for the third time. It was.
  • the silicon carbide content is 2.5% by weight
  • the pressure loss is 19.5 Pa (pascal)
  • the oil removal rate is 92.8%
  • the strain at 15 N load is 1.02 mm. Met. A method for measuring and evaluating pressure loss, oil removal rate, and strain at 15 N load will be described later.
  • Example 2 The content of silicon carbide in the plating solution is 30 g / liter. Others are the same as the first embodiment. As a result, the silicon carbide content was 0.8% by weight, the pressure loss was 19.5 Pa, the oil removal rate was 93.1%, and the strain at 15 N load was 4.1 mm.
  • Example 3 The content of silicon carbide in the plating solution is 200 g / liter. Others are the same as the first embodiment. As a result, the silicon carbide content was 6.5% by weight, the pressure loss was 19.5 Pa, the oil removal rate was 90.2%, and the strain at 15 N load was 0.57 mm.
  • Example 4 The content of silicon carbide in the plating solution is 250 g / liter. Others are the same as the first embodiment. As a result, the silicon carbide content was 7.3% by weight, the pressure loss was 19.5 Pa, and the oil removal rate was 87.5%. Cracks occurred during strain measurement at 15N load.
  • Example 5 The apparent specific gravity is 0.15, and the weight is 360 g. Others are the same as the first embodiment. As a result, the silicon carbide content was 2.5% by weight, the pressure loss was 19.5 Pa, the oil removal rate was 92.3%, and the strain at 15 N load was 3.05 mm.
  • Example 6> The number of cells is 34/25 mm. Others are the same as the first embodiment. As a result, the silicon carbide content was 2.5% by weight, the pressure loss was 27.2 Pa, the oil removal rate was 95.2%, and the strain at 15 N load was 1.13 mm.
  • Example 7 The number of cells is 16/25 mm. Others are the same as the first embodiment. As a result, the silicon carbide content was 2.5% by weight, the pressure loss was 9.5 Pa, the oil removal rate was 82.2%, and the strain at 15 N load was 0.93 mm.
  • Example 8> The thickness is 20 mm, the number of cells is 16/25 mm, and the weight is 900 g. Others are the same as the first embodiment. As a result, the silicon carbide content was 2.5% by weight, the pressure loss was 16.8 Pa, the oil removal rate was 89.9%, and the strain at 15 N load was 0.30 mm.
  • Nickel electroplating was performed without dispersing silicon carbide. Others are the same as the first embodiment. As a result, the pressure loss was 20.3 Pa, the oil removal rate was 93.5%, and the strain at 15 N load was 10.86 mm.
  • Nickel electroplating was performed without dispersing silicon carbide.
  • the apparent specific gravity is 0.4 and the weight is 980 g.
  • Others are the same as the first embodiment.
  • the pressure loss was 21.0 Pa
  • the oil removal rate was 93.7%
  • the strain at 15 N load was 1.05 mm.
  • Example 1 ⁇ Contrast of Examples and Comparative Examples> A comparison of Example 1 and Comparative Example 1 is the same except that the metal composition of Example 1 is nickel-silicon carbide (Ni—SiC) and the metal composition of Comparative Example 1 is nickel (Ni). In the strain at the time of loading, Comparative Example 1 is 10.86 mm, while Example 1 is 1.02 mm. Thus, the grease filter of Example 1 having a nickel-silicon carbide metal composition clearly has higher strength against bending load than the grease filter of Comparative Example 1 having a nickel metal composition. ing.
  • a grease filter composed of a nickel-only metal composition cannot obtain any strength at the same apparent specific gravity as a grease filter composed of a nickel-silicon carbide metal composition, but a grease filter composed of a nickel-silicon carbide metal composition It can be seen that even if the apparent specific gravity is reduced to reduce the weight, it has sufficient bending strength.
  • Example 1 Comparative Example 2
  • the metal composition is only nickel and the apparent specific gravity is 0.4 and the specific gravity is relatively heavy.
  • the strain at 15 N load is 1.05 mm, which is 1.02 mm in Example 1. Is almost the same.
  • Example 2 Although the weight of Comparative Example 2 was 980 g, in Example 1, the apparent specific gravity was reduced to 0.18, so that the weight was reduced to half of 440 g, and the weight was reduced. As a result, the grease filter can be easily replaced, transported and handled during cleaning. In addition, although the pressure loss and oil removal rate of Example 1 decrease compared with Comparative Example 2, the grease filter of Example 1 has a viewpoint of the function as a grease filter, that is, oil removal performance. From a viewpoint, it has sufficient functions.
  • Example 2 is a grease filter in which the silicon carbide content is reduced by reducing the content of silicon carbide in the plating solution as compared to Example 1. Although the strain at 15 N load is larger than that in Example 1, the oil removal rate is increased.
  • Example 3 is a grease filter in which the content of silicon carbide is increased by increasing the content of silicon carbide in the plating solution as compared with Example 1. Although the oil removal rate is lower than that in Example 1, the strain at 15 N load is smaller than that in Example 1.
  • Example 4 is a grease filter in which the content of silicon carbide is further increased by increasing the content of silicon carbide in the plating solution as compared with Example 3.
  • the oil removal rate is lower than in Example 1 and Example 3, the manual of the Japan Kitchen Industry Association states that the oil removal rate is 75% or more as a requirement for the grease filter.
  • the silicon carbide content is large and the hardness is high, cracks occurred at a load of 15 N, but the oil removal rate in Example 4 sufficiently satisfies the requirements.
  • Example 5 is a grease filter with a reduced apparent specific gravity compared to Example 1.
  • the oil removal rate was almost the same as in Example 1, but the strain at 15 N load was larger than in Example 1.
  • Example 6 is a grease filter in which the number of cells is increased as compared to Example 1, that is, a grease filter in which the cells are finer and the density is increased, and the pressure loss is increased, but the oil removal rate is improved. Note that the strain at the time of 15 N load is substantially the same as that of Example 1, and has sufficient bending strength even if the apparent specific gravity is reduced in order to reduce the weight of the grease filter.
  • Example 7 is a grease filter in which the number of cells is reduced compared to Example 1, that is, a grease filter in which the cells are coarse and the density is low, and the oil removal rate is deteriorated, but the pressure loss is reduced.
  • the strain at the time of 15 N load is substantially the same as that of Example 1, and has sufficient bending strength even if the apparent specific gravity is reduced in order to reduce the weight of the grease filter.
  • the oil removal rate is 82.2%, which is not good in the examples.
  • the grease filter is required to have an oil removal rate of 75% or more. In view of this, the oil removal rate in Example 7 sufficiently satisfies the requirement.
  • Example 8 is a grease filter whose thickness is doubled compared to Example 7. Although the weight is almost doubled and the pressure loss is increased, the oil removal rate is improved and the strain at 15 N load is also reduced.
  • a grease filter having a nickel-silicon carbide metal composition has sufficient bending strength and oil removal performance even if the apparent specific gravity is reduced to reduce the weight of the grease filter. Moreover, when the unevenness
  • the metal porous body produced by performing only electroplating in a Ni—SiC plating bath is: Since the amount of plating at the center of the metal porous body is small, it breaks at 15 N load. Similarly, the oil removal rate of the metal porous body produced by performing only the first nickel electroplating and the second electroplating in the Ni—SiC plating bath decreases to 85.5%.
  • the oil removal test is generally performed as follows based on the guidebook of the Japan Kitchen Industry Association. First, the grease filter is disposed with an inclination of 45 degrees with respect to the horizontal plane, with the distance between the lower limit of the grease filter and the fire source (pot bottom) being about 45 cm. Oil (vegetable oil) and water are simultaneously dropped into an aluminum pan set to keep the temperature at 270 ° C. to generate oil vapor. The oil supply is about 13 g (about 10 drops for 10 seconds) for 5 minutes, and the water supply is about 40 g (about 30 drops for 10 seconds) for 5 minutes. The wind speed in front of the grease filter is adjusted to an average wind speed of 1.1 m / sec to 1.2 m / sec by adjusting the damper for air volume adjustment. The test time is 4 consecutive hours.
  • Oil removal rate (%) (Grease collection container collection amount (g) + Grease filter adhesion amount (g)) ⁇ Oil use amount of oil vapor (g) ⁇ 100
  • the pressure loss is a pressure difference between the inlet pressure (upstream static pressure) and the outlet (downstream static pressure) when the grease filter is used at the rated air volume.
  • the pressure loss is measured using a fine differential pressure gauge.
  • Pressure loss (Pa) Upstream static pressure (Pa)-Downstream static pressure (Pa)
  • the ease of deformation when handling the grease filter is described in the technical standard (JAEA 1994-9) of the grease removal device attached to the commercial kitchen equipment of the Japan Kitchen Industry Association.
  • the three-point bending strength test was evaluated. Specifically, a sample was cut out to a length of 15 cm ⁇ width of 5 cm ⁇ thickness of 1 cm, a bending strength test was performed, and a strain (mm) at 15 N load was measured.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Filtering Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Ventilation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un filtre à graisse qui réduit la gravité spécifique apparente pour réduire le poids du filtre à graisse, et qui possède une résistance à la flexion suffisante et une performance élevée d'élimination de l'huile, et concerne également un procédé pour le fabriquer. Le filtre à graisse selon la présente invention comprend un corps poreux métallique qui est fabriqué, dans un procédé d'électrodéposition, en réalisant l'électrodéposition par la suspension de carbure de silicium dans une solution de déposition, une matrice de solution de déposition étant le nickel. L'invention concerne en outre le procédé de fabrication dudit filtre à graisse.
PCT/JP2012/081538 2011-12-06 2012-12-05 Procédé de fabrication d'un corps poreux métallique, et filtre à graisse WO2013084949A1 (fr)

Applications Claiming Priority (2)

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JP2011-267346 2011-12-06
JP2011267346A JP2013119049A (ja) 2011-12-06 2011-12-06 金属多孔体の製造方法及びグリスフィルター

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JP2020171919A (ja) * 2019-04-10 2020-10-22 エース工機株式会社 多層式グリスフィルター及びバッフル型フィルター

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681695A (en) * 1979-12-05 1981-07-03 C Uyemura & Co Ltd Plating method to provide corrosion resistance
JPH06238113A (ja) * 1993-02-16 1994-08-30 Bridgestone Corp 厨房用グリスフィルター
JPH07150270A (ja) * 1993-11-30 1995-06-13 Sumitomo Electric Ind Ltd 金属多孔質材、その製造方法およびそれを用いた電池用電極
JP2000021415A (ja) * 1998-07-03 2000-01-21 Sumitomo Electric Ind Ltd 導電性多孔質体とそれを用いた金属多孔質体および電池用の極板
JP2000129022A (ja) * 1998-10-26 2000-05-09 Inoac Corp 連続通気性を有する非導電性多孔性材料の金属メッキ方法
JP2001137631A (ja) * 1999-11-12 2001-05-22 Osaka Gas Co Ltd 金属多孔質体及びその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681695A (en) * 1979-12-05 1981-07-03 C Uyemura & Co Ltd Plating method to provide corrosion resistance
JPH06238113A (ja) * 1993-02-16 1994-08-30 Bridgestone Corp 厨房用グリスフィルター
JPH07150270A (ja) * 1993-11-30 1995-06-13 Sumitomo Electric Ind Ltd 金属多孔質材、その製造方法およびそれを用いた電池用電極
JP2000021415A (ja) * 1998-07-03 2000-01-21 Sumitomo Electric Ind Ltd 導電性多孔質体とそれを用いた金属多孔質体および電池用の極板
JP2000129022A (ja) * 1998-10-26 2000-05-09 Inoac Corp 連続通気性を有する非導電性多孔性材料の金属メッキ方法
JP2001137631A (ja) * 1999-11-12 2001-05-22 Osaka Gas Co Ltd 金属多孔質体及びその製造方法

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