WO2018158959A1 - 高意匠摺動部材 - Google Patents
高意匠摺動部材 Download PDFInfo
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- WO2018158959A1 WO2018158959A1 PCT/JP2017/008627 JP2017008627W WO2018158959A1 WO 2018158959 A1 WO2018158959 A1 WO 2018158959A1 JP 2017008627 W JP2017008627 W JP 2017008627W WO 2018158959 A1 WO2018158959 A1 WO 2018158959A1
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- Prior art keywords
- layer
- sliding member
- chemical conversion
- conversion treatment
- resin
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
- C23C22/30—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also trivalent chromium
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/53—Treatment of zinc or alloys based thereon
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- 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
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
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- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/50—Alloys based on zinc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/70—Coating surfaces by electroplating or electrolytic coating, e.g. anodising, galvanising
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/60—Thickness, e.g. thickness of coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/60—Thickness, e.g. thickness of coatings
- F16C2240/64—Thickness, e.g. thickness of coatings in the nanometer range
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12542—More than one such component
- Y10T428/12549—Adjacent to each other
Definitions
- the present invention relates to a sliding member provided with a galvanized layer subjected to chemical conversion treatment, and more particularly to a high-gloss metal sliding member having high gloss and no yellowing or redness.
- Zinc plating is widely used as an anticorrosion plating for iron.
- Zinc plating has a self-sacrificing action on metal substrates such as iron, and the zinc itself dissolves and suppresses corrosion of the metal substrate. Rust is generated and gloss decreases.
- the above chemical conversion treatment causes interference color on the surface of the galvanizing and color unevenness, which makes it difficult to use as a member requiring high design properties such as automobile parts, construction hardware, and machine parts. Therefore, plating or the like containing nickel (Ni) is generally used for sliding members that require design properties.
- Patent Document 1 describes a sliding member including a zinc alloy plating film containing nickel and molybdenum on the surface of a metal base material and having a black appearance.
- the present invention has been made in view of such problems of the prior art, and the object of the present invention is to provide a high design with a high metallic luster in which interference color is suppressed even with inexpensive galvanization.
- the object is to provide a sliding member. Moreover, it is providing the manufacturing method of the highly versatile sliding member which can manufacture without changing a normal galvanizing line significantly.
- the present inventor was selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin on the galvanized surface subjected to the chemical conversion treatment.
- a silica compound an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin
- the topcoat layer containing at least one kind, the interference color generated by the chemical conversion treatment layer is reduced, the gloss is increased, and the corrosion resistance and the sliding property are remarkably improved, and the present invention is completed. It was.
- the sliding member of the present invention has a surface treatment layer on the surface of the metal substrate, and the surface treatment layer includes an electrogalvanized layer, a chemical conversion treatment layer, and a topcoat layer in this order from the metal substrate side.
- the chemical conversion treatment layer contains chromium and oxygen.
- the top coat layer includes at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin.
- the manufacturing method of the sliding member of this invention is a manufacturing method of the sliding member which has a surface treatment layer on the surface of a metal base material, and the surface treatment layer of the said sliding member is galvanized in order from the metal base material side.
- a layer, a chemical conversion treatment layer, and a topcoat layer, and the chemical conversion treatment layer contains chromium and oxygen.
- it comprises the step of forming a top coat layer containing at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin on the surface of the chemical conversion treatment layer. To do.
- a topcoat layer containing at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin on the chemically treated galvanized surface; Therefore, it is possible to provide a high-gloss sliding member with reduced interference color generated in the chemical conversion treatment layer.
- the top coat layer containing at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin is formed on the chemically treated galvanized surface. Since the process is provided, a highly glossy sliding member can be produced without significantly changing a general galvanizing line having high versatility.
- the sliding member of the present invention has a surface treatment layer on the surface of the metal substrate.
- a top coat layer containing at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin is formed on the surface of the chemical-treated zinc plating.
- a galvanized layer 2, a chemical conversion treatment layer 3, and a top coat layer 4 are provided in this order from the metal substrate side.
- the topcoat layer contains at least one selected from the group consisting of a silica compound, an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin (hereinafter sometimes referred to as “topcoat layer composition”). It is a clear layer that covers the surface of the galvanized surface that has been subjected to chemical conversion treatment. Since the top coat layer is transparent, the light transmitted through the top coat layer is reflected by the chemical conversion treatment layer, so that it has a metallic luster, and the interference color and color unevenness of the chemical conversion treatment layer are canceled out.
- a silica compound an acrylic resin, a polyurethane resin, an epoxy resin, a phenol resin, and a melamine resin
- “transparent” means that the light transmittance in the visible light region (380 nm to 780 nm) is 70% or more.
- the adhesion amount of the top coat layer is preferably 0.3 mg / m 2 or more and 8.0 mg / m 2 or less, and more preferably 0.3 mg / m 2 to 3.5 mg / m 2 .
- the corrosion resistance can be improved by increasing the amount of the topcoat layer attached.
- it exceeds 8.0 mg / m 2 white powdery enlarged crystals may be easily formed depending on the silica compound, and the metallic luster may be deteriorated over time.
- the adhesion amount of the topcoat layer can be measured by removing the topcoat layer formed on the sliding member and measuring the weight per unit area.
- the topcoat layer composition constituting the topcoat layer is not particularly limited as long as it has good adhesion and transparency with the chemical conversion treatment layer and can block moisture and oxygen, but the acrylic resin, polyurethane resin, epoxy
- silica compounds can be used. Examples of the silica compounds include silicon oxide and silicate.
- the topcoat layer composition containing a silica compound is suitable for a sliding member that cannot use lubricating oil, for example, a sliding member such as an automobile headrest stay, because it has high slipperiness and can reduce sliding resistance.
- a sliding member such as an automobile headrest stay
- the top coat layer composition is preferably soluble or dispersible in water. Since the top coat layer composition is aqueous, it is not necessary to use an oily solvent, and the top coat layer can be formed continuously from the formation of the galvanized layer. Therefore, it can process without changing a normal galvanization production line significantly.
- the topcoat layer can be formed by applying and drying an aqueous topcoat layer coating solution containing the above topcoat layer composition.
- the chemical conversion treatment layer contains chromium (Cr) and oxygen (O), and is a coating formed on the galvanization, which prevents the occurrence of white rust in the galvanization and delays the occurrence of red rust on the metal substrate. .
- the thickness of the chemical conversion treatment layer is preferably 50 nm to 300 nm. When the thickness of the chemical conversion treatment layer is within the above range, an appearance having a silver-like metallic luster can be formed in combination with the top coat layer.
- the thickness of the chemical conversion treatment layer is less than 50 nm, the corrosion resistance is lowered and red rust of the metal base material is likely to occur, and the design property may be deteriorated. In some cases, it tends to be tinged and reddish, and even when the top coat layer is formed, it is difficult to sufficiently cancel the interference color and color unevenness.
- the thickness of the chemical conversion treatment layer can be measured by photographing a cross section of the surface treatment layer.
- the chemical conversion treatment layer can be formed by immersing a galvanized metal base material in a chemical conversion treatment liquid mainly composed of trivalent chromic acid or dichromate.
- the chemical conversion treatment layer formed of a chromate liquid mainly composed of trivalent chromium has lower self-repairability and inferior corrosion resistance than a chemical conversion treatment layer mainly composed of hexavalent chromium.
- a corrosion resistance is improved by the top coat layer, the appearance having a metallic luster can be maintained for a long time.
- the galvanized layer protects the metal substrate from corrosion by a sacrificial anticorrosive action that corrodes itself.
- the galvanized layer of the present invention is not particularly limited as long as the appearance has a metallic luster, but electrogalvanizing formed by electroplating is preferable because the surface unevenness is small and a high gloss appearance is easily obtained. Can be used.
- the thickness of the galvanized layer is preferably 3 ⁇ m or more. Corrosion resistance improves by being 3 micrometers or more. That is, when the thickness of the galvanized layer is too thin, the galvanization is easily lost due to the sacrificial anticorrosive action and the corrosion resistance is lowered.
- the electrogalvanizing method is a method in which metal ions in the plating solution are deposited on the surface of the metal substrate at the atomic level by using electric energy, and it is difficult to increase the thickness of the electrogalvanized metal.
- the practical upper limit of plating is about 20 ⁇ m.
- the thickness of the galvanized layer can be measured by photographing a cross section of the surface treatment layer.
- Metal substrate a metal nobler than zinc can be used, and an iron-based metal substrate such as a steel material can be preferably used.
- the sliding member can be manufactured by forming a surface treatment layer on the surface of a metal substrate processed into a product shape, and the manufacturing method of the sliding member of the present invention includes a chemical conversion treatment of a galvanized layer. Forming a topcoat layer on the sliding member.
- the galvanized layer subjected to the chemical conversion treatment can be formed by a usual method. Specifically, a metal substrate processed into a product shape is washed and degreased, and a galvanized layer is formed by electroplating. Then, the surface of the galvanized layer is acid-activated with dilute nitric acid or the like, and immersed in a chemical conversion treatment solution (acidic aqueous solution) containing trivalent chromic acid to form a galvanized layer whose surface is subjected to chemical conversion treatment. it can.
- a chemical conversion treatment solution acidic aqueous solution
- Either an acidic bath or an alkaline bath can be used as a plating bath for forming a galvanized layer by electroplating.
- Examples of the alkaline bath include a cyan bath and a zincate bath.
- Zinc plating using a cyan bath is excellent in uniform electrodeposition, smoothness, and flexibility of the plating film.
- Examples of the acidic bath include a chloride bath and a sulfuric acid bath
- examples of the chloride bath include a zinc chloride / ammonium bath, a zinc chloride / potassium bath, and a zinc / chloride / ammonium / potassium bath.
- the electroplating layer is formed by a conventional plating method, for example, in a plating bath containing a metal salt, a conductivity-imparting agent, a hydrogen ion concentration adjusting agent, an additive, etc. It can be formed by depositing metal on the surface of the material.
- the chemical conversion treatment liquid conventionally known chemical conversion treatment liquids such as gloss chromate, colored chromate and blue chromate can be used, but it is preferable to use a chromate liquid mainly composed of trivalent chromium.
- the said chemical conversion treatment layer can be formed by immersing the zinc-plated metal base material in the chemical conversion treatment liquid (chromate liquid) containing trivalent chromium.
- the chromic acid concentration, temperature, pH, and treatment time of the chemical conversion treatment liquid when forming the trivalent chrome chemical conversion treatment layer are not particularly limited, but the chromic acid concentration is 50 g / l to 150 g / l, the treatment temperature. Is preferably 20 to 50 ° C., pH is 1.0 to 3.0, and the treatment time is preferably 20 to 90 seconds.
- the chromic acid concentration is too low, it is difficult to form a chemical conversion treatment layer having a sufficient thickness, and even if the concentration is increased, the formation efficiency of the chemical conversion treatment layer may be reduced and productivity may be reduced. Moreover, since melt
- the treatment time is short, it is difficult to form a chemical conversion treatment layer having a sufficient thickness, and even if the treatment time is 90 seconds or more, the formation efficiency of the chemical conversion treatment layer is reduced, leading to a reduction in productivity. There is a fear.
- the method for producing a sliding member according to the present invention forms a topcoat layer by applying and drying an aqueous topcoat layer coating solution containing the topcoat layer composition on the surface of the chemical-treated galvanized layer. The process of carrying out is provided.
- Examples of the coating method of the topcoat layer coating solution include dipping methods, spray coating methods and the like, which can be conventionally known coating methods, but the dipping method is easy to form a topcoat layer having a uniform thickness, It can be preferably used.
- the concentration of the topcoat layer composition in the topcoat layer coating solution is preferably 5 g / l to 100 g / l, and more preferably 5 g / l to 35 g / l.
- concentration of the topcoat layer composition is in the above range, the viscosity of the topcoat layer coating solution can be lowered, and a thin and smooth topcoat layer can be formed.
- topcoat layer coating solution is applied by dip coating and before drying.
- a topcoat layer with a uniform film thickness can be formed and dripping in the drying process. Workability is improved.
- the top coat layer is preferably heat-dried at a temperature of 60 ° C. to 100 ° C. By drying in a short time after the coating of the topcoat layer coating liquid, it is possible to prevent the generation of enlarged crystals and to form a topcoat layer having a uniform film thickness.
- the sliding member can be manufactured simply by adding a top coat layer dipping process and a process of blowing air to a general galvanizing line.
- the sliding member can be manufactured using a normal galvanizing line having high properties.
- topcoat layer coating solution Z A silica-based compound (SiO 2 ) (Hydroklad Si: 174439: MacDermid Enthone INDUSTRIAL SOLUTIONS) was dissolved in water to prepare a topcoat layer coating solution X. Similarly, a topcoat layer coating solution Y containing silica-based compound (SiO 2 ) (ULTRASEAL: 118639: MacDermid Enthone SOLIDOLIONS) and an acrylic resin (post dip: 187387: MacDermid Enthonoid INDUSTRIAL SOLUTION) The topcoat layer coating solution Z was prepared. Table 3 below shows the concentration, pH, and bath temperature of the topcoat layer composition of each coating solution.
- Example 1 A defatted cylindrical rod-shaped metal substrate (steel material) having a diameter of 1 cm is immersed in an acidic bath A having the composition shown in Table 1 above, treated with a current density of 3 [A / dm 2 ] for 15 [min], and then washed with water. Thus, a zinc plating layer having a thickness of 8 ⁇ m was formed.
- the topcoat was blown up and sprayed with air to blow off the excess coating solution, and further dried in a constant temperature bath at 80 ° C. A sliding member having a layer adhered to 3.3 mg / m 2 was obtained.
- Example 2 A sliding member was obtained in the same manner as in Example 1 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Y shown in Table 3 above and immersed for 45 seconds.
- Example 3 A sliding member was obtained in the same manner as in Example 1 except that the topcoat layer coating solution X was replaced with the topcoat layer coating solution Z shown in Table 3 and immersed in the topcoat layer coating solution Z for 30 seconds.
- Example 4 Instead of the chemical conversion treatment liquid P, after being immersed in the chemical conversion treatment solution Q shown in Table 2 for 60 seconds, it was lifted and washed to form a chemical conversion treatment layer having a film thickness of 220 nm. A sliding member was obtained.
- Example 5 A sliding member was obtained in the same manner as in Example 4 except that the top coat layer coating solution X was replaced by 45 seconds in the top coat layer coating solution Y shown in Table 3 above.
- Example 6 A sliding member was obtained in the same manner as in Example 4 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Z shown in Table 3 and immersed in the top coat layer coating solution Z for 30 seconds.
- Example 7 Instead of the chemical conversion treatment liquid P, after being immersed in the chemical conversion treatment solution R shown in Table 2 for 30 seconds, it was lifted and washed to form a chemical conversion treatment layer having a film thickness of 220 nm. A sliding member was obtained.
- Example 8 A sliding member was obtained in the same manner as in Example 7, except that the top coat layer coating solution X was replaced with the top coat layer coating solution Y shown in Table 3 above for 45 seconds.
- Example 9 A sliding member was obtained in the same manner as in Example 7 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Z shown in Table 3 and immersed in the top coat layer coating solution Z for 30 seconds.
- Example 10 The degreased metal substrate is immersed in an alkaline bath B having the composition shown in Table 1 above, treated with a current density of 3 [A / dm 2 ] for 25 [min], then washed with water and galvanized with a thickness of 8 ⁇ m. A sliding member was obtained in the same manner as in Example 1 except that the layer was formed.
- Example 11 A sliding member was obtained in the same manner as in Example 10 except that the topcoat layer coating solution X was replaced with the topcoat layer coating solution Y shown in Table 3 above for 45 seconds.
- Example 12 A sliding member was obtained in the same manner as in Example 7 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Z shown in Table 3 and immersed in the top coat layer coating solution Z for 30 seconds.
- Example 13 Instead of the chemical conversion treatment solution P, after being immersed in the chemical conversion treatment solution Q shown in Table 2 for 60 seconds, it was lifted and washed to form a chemical conversion treatment layer having a film thickness of 220 nm. A sliding member was obtained.
- Example 14 A sliding member was obtained in the same manner as in Example 13, except that the topcoat layer coating solution X was replaced with the topcoat layer coating solution Y shown in Table 3 above for 45 seconds.
- Example 15 A sliding member was obtained in the same manner as in Example 13 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Z shown in Table 3 above for 30 seconds.
- Example 16 Instead of the chemical conversion treatment solution P, after being immersed in the chemical conversion treatment solution R shown in Table 2 for 30 seconds, it was lifted and washed to form a chemical conversion treatment layer having a film thickness of 220 nm. A sliding member was obtained.
- Example 17 A sliding member was obtained in the same manner as in Example 16 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Y shown in Table 3 above for 45 seconds.
- Example 18 A sliding member was obtained in the same manner as in Example 16 except that the top coat layer coating solution X was replaced with the top coat layer coating solution Z shown in Table 3 and immersed in the top coat layer coating solution Z for 30 seconds.
- Example 19 The degreased metal substrate is immersed in an alkaline bath B having the composition shown in Table 1 above, treated with a current density of 0.38 [A / dm 2 ] for 25 [min], then washed with water and a film thickness of 1 ⁇ m. A sliding member was obtained in the same manner as in Example 12 except that the galvanized layer was formed.
- Example 20 The degreased metal base material is immersed in an alkaline bath B having the composition shown in Table 1 above, treated with a current density of 1.13 [A / dm 2 ] for 25 [min], then washed with water and a film thickness of 3 ⁇ m. A sliding member was obtained in the same manner as in Example 12 except that the galvanized layer was formed.
- Example 21 The degreased metal substrate was immersed in an alkaline bath B having the composition shown in Table 1 above, treated with a current density of 1.88 [A / dm 2 ] for 25 [min], washed with water, and a film thickness of 5 ⁇ m. A sliding member was obtained in the same manner as in Example 12 except that the galvanized layer was formed.
- Example 22 The degreased metal substrate was immersed in an alkaline bath B having the composition shown in Table 1 above, treated with a current density of 4.88 [A / dm 2 ] for 25 [min], washed with water, and a film thickness of 13 ⁇ m. A sliding member was obtained in the same manner as in Example 12 except that the galvanized layer was formed.
- Example 23 A sliding member was obtained in the same manner as in Example 14 except that a chemical conversion treatment liquid Q having a chromic acid concentration of 60 g / l was used to form a chemical conversion treatment layer having a thickness of 40 nm.
- Example 24 A sliding member was obtained in the same manner as in Example 14 except that the chemical conversion treatment liquid Q having a chromic acid concentration of 80 g / l and a pH of 3.3 was used to form a chemical conversion treatment layer having a thickness of 40 nm.
- Example 25 A sliding member was obtained in the same manner as in Example 14 except that a chemical conversion treatment Q having a chromic acid concentration of 60 g / l was used to form a chemical conversion treatment layer having a thickness of 160 nm.
- Example 26 A sliding member was obtained in the same manner as in Example 14 except that a chemical conversion treatment liquid Q having a chromic acid concentration of 100 g / l was used to form a chemical conversion treatment layer having a thickness of 220 nm.
- Example 27 A sliding member was obtained in the same manner as in Example 14 except that a chemical conversion treatment liquid Q having a chromic acid concentration of 120 g / l was used to form a chemical conversion treatment layer having a thickness of 220 nm.
- Example 28 Sliding in the same manner as in Example 17 except that the topcoat layer coating solution Y having a chromic acid concentration of 5 g / l is immersed for 45 seconds to form a topcoat layer having an adhesion amount of 0.3 mg / m 2. A member was obtained.
- Example 29 Sliding in the same manner as in Example 17 except that the topcoat layer coating solution Y having a chromic acid concentration of 10 g / l is immersed for 45 seconds to form a topcoat layer having an adhesion amount of 1.7 mg / m 2. A member was obtained.
- Example 30 Sliding in the same manner as in Example 17 except that the topcoat layer coating solution Y having a chromic acid concentration of 30 g / l is immersed for 45 seconds to form a topcoat layer having an adhesion amount of 3.3 mg / m 2. A member was obtained.
- Example 31 Sliding in the same manner as in Example 17 except that the topcoat layer coating solution Y having a chromic acid concentration of 50 g / l is immersed for 45 seconds to form a topcoat layer having an adhesion amount of 4.9 mg / m 2. A member was obtained.
- Example 32 Sliding in the same manner as in Example 17 except that the top coat layer coating solution Y having a chromic acid concentration of 70 g / l is immersed for 45 seconds to form a top coat layer having an adhesion amount of 7.7 mg / m 2. A member was obtained.
- the sliding members of Examples 1 to 32 and Comparative Examples 1 to 12 were evaluated by the following methods. Moreover, it evaluated together also about the member only of hot dip galvanization. Table 5 shows the evaluation results of the sliding members, and Table 6 shows the evaluation results of the members only with hot dip galvanizing.
- FIG. 2 SEM image of the sliding member surface of Example 29 and Example 31 is shown in FIG. 2, FIG.
- the examples having the top coat layer not only improved the corrosion resistance and slidability as compared with Comparative Examples 1 to 6, but also the interference color became lighter and the metallic luster with a high silver tone was obtained. It was confirmed that the design properties were improved. Further, from a comparison between Examples 1 and 2 and Example 3, the topcoat layer containing the silica compound has low sliding resistance and excellent slidability, and the topcoat layer containing the acrylic resin has corrosion resistance. It was confirmed to be excellent. Further, in Example 29, enlarged crystals are not generated on the surface of the topcoat layer, but in Examples 31 and 32, enlarged crystals are generated, and the amount of the topcoat layer containing the silica compound is large. It was confirmed that if it is too much, the designability is likely to deteriorate with time.
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Abstract
Description
亜鉛めっきは、鉄等の金属基材に対して自己犠牲作用が働き、亜鉛自らが溶解し、金属基材の腐食を抑制するが、亜鉛めっきは、大気中において比較的短時間で表面に白さびが発生して光沢が低下してしまう。
そこで、意匠性が要求される摺動部材には、一般的にニッケル(Ni)を含むめっき等が用いられている。
また、通常の亜鉛めっきラインを利用して製造することができず、汎用性が低いものである。
また、通常の亜鉛めっきラインを大幅に変えずに製造できる、汎用性の高い摺動部材の製造方法を提供することにある。
そして、上記トップコート層が、シリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種を含むものであることを特徴とする。
そして、上記化成処理層の表面にシリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種を含むトップコート層を形成する工程を備えることを特徴とする。
上記摺動部材は、金属基材表面に表面処理層を有する。上記表面処理層は、化成処理された亜鉛めっきの表面にシリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種を含むトップコート層が形成されたものであり、図1に示すように、金属基材側から順に亜鉛めっき層2、化成処理層3、トップコート層4を備える。
トップコート層はシリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種(以下、「トップコート層組成物」ということがある。)を含むものであり、化成処理された亜鉛めっきの表面を被覆するクリア層である。
トップコート層が透明であることで、トップコート層を透過した光が化成処理層で反射するため金属光沢を有すると共に、化成処理層の干渉色や色ムラが打ち消され、L*a*b*表色系におけるL*値が85以上、|a*|が6未満、|b*|が8未満、金属光沢(Gloss)が170以上の着色が抑制されたシルバー調の高意匠な外観を得ることができる。
上記トップコート層の付着量は、摺動部材に形成されたトップコート層を剥がし、単位面積当たりの重量を計ることで測定できる。
上記化成処理層は、クロム(Cr)及び酸素(O)を含み、亜鉛めっき上に形成された被膜であり、亜鉛めっきの白錆の発生を防ぐと共に金属基材の赤錆発生を遅らせるものである。
上記化成処理層の厚さは、表面処理層の断面を撮影することで測定できる。
亜鉛めっき層は、自らが腐食するする犠牲防食作用により金属基材を腐食から守るものである。本発明の亜鉛めっき層は、外観が金属光沢を有するものであれば特に制限はないが、電気めっき法で形成された電気亜鉛めっきは、表面凹凸が小さく高光沢の外観を得やすいため、好ましく使用できる。
上記亜鉛めっき層の厚さは、表面処理層の断面を撮影することで測定できる。
上記金属基材は、亜鉛よりも貴な金属を使用することができ、鋼材等の鉄系の金属基材を好ましく用いることができる。
上記摺動部材は、製品形状に加工された金属基材表面に表面処理層を形成することで製造することができ、本発明の摺動部材の製造方法は、化成処理された亜鉛めっき層を有する摺動部材にトップコート層を形成する工程を備える。
3価クロム化成処理層を形成するときの化成処理液のクロム酸濃度、温度、pH、及び、処理時間としては特に制限はないが、クロム酸濃度は、50g/l~150g/l、処理温度は20~50℃、pHは1.0~3.0、処理時間は20~90秒であることが好ましい。
また、温度が高すぎると金属基材の溶解が過度になり、逆に温度が低すぎると反応性が低下するため、外観が低下するおそれがある。
さらに、pHが高いとはエッチング不足により十分な化成処理層が形成しないおそれがある。さらに、処理時間が短いと充分な厚さの化成処理層が形成することが困難であり、処理時間を90秒以上にしても化成処理層の形成効率が低下して、生産性の低下を招くおそれがある。
下記表1に示す組成の酸性めっき浴A、アルカリめっき浴Bを調整した。
有機酸クロメートP(Tripass ELV 1500LT, 187396, MacDermid Enthone INDUSTRIAL SOLUTIONS)、
有機酸シリカクロメートQ(Tripass ELV 7000, 187735, MacDermid Enthone INDUSTRIAL SOLUTIONS)、
青色クロメートR(Tripass Blue, 186005, MacDermid Enthone INDUSTRIAL SOLUTIONS)の化成処理液を調整した。上記化成処理液のクロム酸濃度、pH、浴温を表2に示す。
シリカ系化合物(SiO2)(Hydroklad Si:174439:MacDermid Enthone INDUSTRIAL SOLUTIONS)を水に溶解させて、トップコート層塗工液Xを作製した。
また、同様にして、シリカ系化合物(SiO2)(ULTRASEAL:118639:MacDermid Enthone INDUSTRIAL SOLUTIONS)を含むトップコート層塗工液Y、及び、アクリル樹脂(ポストディップ:187387:MacDermid Enthone INDUSTRIAL SOLUTIONS)を含むトップコート層塗工液Zを調整した。
下記表3に各塗工液のトップコート層組成物の濃度、pH及び浴温を示す。
脱脂した直径1cmの円筒形棒状金属基材(鋼材)を、上記表1に示す組成の酸性浴A中に浸漬し、電流密度3[A/dm2]で15[min]処理した後、水洗して膜厚が8μmの亜鉛めっき層を形成した。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例1と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例1と同様にして摺動部材を得た。
化成処理液Pに替えて、上記表2に示す化成処理液Q中に60秒間浸漬した後、引き上げて水洗し、膜厚が220nmの化成処理層を形成する他は実施例1と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例4と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例4と同様にして摺動部材を得た。
化成処理液Pに替えて、上記表2に示す化成処理液R中に30秒間浸漬した後、引き上げて水洗し、膜厚が220nmの化成処理層を形成する他は実施例1と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例7と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例7と同様にして摺動部材を得た。
脱脂した金属基材を、上記表1に示す組成のアルカリ浴B中に浸漬し、電流密度3[A/dm2]で25[min]処理した後、水洗して膜厚が8μmの亜鉛めっき層を形成する他は実施例1と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例10と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例7と同様にして摺動部材を得た。
化成処理液Pに替えて、上記表2に示す化成処理液Q中に60秒間浸漬した後、引き上げて水洗し、膜厚が220nmの化成処理層を形成する他は実施例10と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例13と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例13と同様にして摺動部材を得た。
化成処理液Pに替えて、上記表2に示す化成処理液R中に30秒間浸漬した後、引き上げて水洗し、膜厚が220nmの化成処理層を形成する他は実施例10と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Y中に45秒間浸漬する他は実施例16と同様にして摺動部材を得た。
トップコート層塗工液Xに替えて、上記表3に示すトップコート層塗工液Z中に30秒間浸漬する他は実施例16と同様にして摺動部材を得た。
脱脂した金属基材を、上記表1に示す組成のアルカリ浴B中に浸漬し、電流密度0.38[A/dm2]で25[min]処理した後、水洗して膜厚が1μmの亜鉛めっき層を形成する他は実施例12と同様にして摺動部材を得た。
脱脂した金属基材を、上記表1に示す組成のアルカリ浴B中に浸漬し、電流密度1.13[A/dm2]で25[min]処理した後、水洗して膜厚が3μmの亜鉛めっき層を形成する他は実施例12と同様にして摺動部材を得た。
脱脂した金属基材を、上記表1に示す組成のアルカリ浴B中に浸漬し、電流密度1.88[A/dm2]で25[min]処理した後、水洗して膜厚が5μmの亜鉛めっき層を形成する他は実施例12と同様にして摺動部材を得た。
脱脂した金属基材を、上記表1に示す組成のアルカリ浴B中に浸漬し、電流密度4.88[A/dm2]で25[min]処理した後、水洗して膜厚が13μmの亜鉛めっき層を形成する他は実施例12と同様にして摺動部材を得た。
クロム酸濃度が60g/lの化成処理液Qを用いて膜厚が40nmの化成処理層を形成する他は実施例14と同様にして摺動部材を得た。
クロム酸濃度が80g/l、pHが3.3の化成処理液Qを用いて膜厚が40nmの化成処理層を形成する他は実施例14と同様にして摺動部材を得た。
クロム酸濃度が60g/lの化成処理液Qを用いて膜厚が160nmの化成処理層を形成する他は実施例14と同様にして摺動部材を得た。
クロム酸濃度が100g/lの化成処理液Qを用いて膜厚が220nmの化成処理層を形成する他は実施例14と同様にして摺動部材を得た。
クロム酸濃度が120g/lの化成処理液Qを用いて膜厚が220nmの化成処理層を形成する他は実施例14と同様にして摺動部材を得た。
クロム酸の濃度が5g/lのトップコート層塗工液Y中に45秒間浸漬し、付着量が0.3mg/m2のトップコート層を形成する他は実施例17と同様にして摺動部材を得た。
クロム酸の濃度が10g/lのトップコート層塗工液Y中に45秒間浸漬し、付着量が1.7mg/m2のトップコート層を形成する他は実施例17と同様にして摺動部材を得た。
クロム酸の濃度が30g/lのトップコート層塗工液Y中に45秒間浸漬し、付着量が3.3mg/m2のトップコート層を形成する他は実施例17と同様にして摺動部材を得た。
クロム酸の濃度が50g/lのトップコート層塗工液Y中に45秒間浸漬し、付着量が4.9mg/m2のトップコート層を形成する他は実施例17と同様にして摺動部材を得た。
クロム酸の濃度が70g/lのトップコート層塗工液Y中に45秒間浸漬し、付着量が7.7mg/m2のトップコート層を形成する他は実施例17と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例1と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例4と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例7と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例10と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例13と同様にして摺動部材を得た。
トップコート層を形成しない他は実施例16と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例1と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例2と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例3と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例10と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例11と同様にして摺動部材を得た。
化成処理層を形成しない他は実施例12と同様にして摺動部材を得た。
また、溶融亜鉛めっきのみの部材についても併せて評価した。
摺動部材の評価結果を表5に、溶融亜鉛めっきのみの部材の評価結果を表6に示す。
BYK Gardner社製のmicro-TRI-glossを用い、摺動部材の表面における鏡面光沢度(60°gloss)を測定した。
また、コニカミノルタ(株)製のL*a*b*表色系分光測色計CM-700dを用い、光源D65、視野角10度、SCI方式(正反射光含む条件)で摺動部材のL*a*b*値を測定した。評価基準を表4に示す。
円筒形の摺動部材の外周を面圧40MPaで押え、摺動速度20mm/sで引き抜くときに要する力を測定した。
AA :50N未満
A :50N以上60N未満
NG :60N以上
JIS Z 2371 に準拠し、35℃の環境下で5%の塩化ナトリウム水溶液を噴霧して白錆が発生するまでの時間を測定した。評価基準を表5に示す。
また、実施例1,2、と実施例3との比較等から、シリカ化合物を含むトップコート層は、摺動抵抗が低く摺動性が優れ、また、アクリル樹脂を含むトップコート層は耐食性が優れることが確認された。
さらに、実施例29はトップコート層表面に肥大化した結晶が発生していないが、実施例31,32は肥大化した結晶が発生しており、シリカ化合物を含むトップコート層の付着量が多すぎると経時で意匠性が低下し易くなることが確認された。
2 亜鉛めっき層
3 化成処理層
4 トップコート層
Claims (11)
- 金属基材表面に表面処理層を有する摺動部材であって、
上記表面処理層が、金属基材側から順に電気亜鉛めっき層、化成処理層、トップコート層を備え、
上記化成処理層がクロム及び酸素を含有し、
上記トップコート層が、シリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種を含むものであることを特徴とする摺動部材。 - 金属基材表面に表面処理層を有する摺動部材であって、
上記表面処理層が、金属基材側から順に亜鉛めっき層、化成処理層、トップコート層を備え、
上記化成処理層がクロム及び酸素を含有し、
上記トップコート層が、シリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂から成る群より選ばれた少なくとも一種を含むクリア層であり
上記部材表面のL*a*b*表色系におけるL*値が85以上、|a*|が6未満、|b*|が8未満、金属光沢(Gloss)が170以上であることを特徴とする摺動部材。 - 上記トップコート層の付着量が、0.3mg/m2以上であることを特徴とする請求項1又は2に記載の摺動部材。
- 上記化成処理層の厚さが50nm~300nmであることを特徴とする請求項1~3のいずれか1つの項に記載の摺動部材。
- 上記亜鉛めっき層の厚さが3μm~20μmであることを特徴とする請求項1~4のいずれか1つの項に記載の摺動部材。
- 金属基材表面に表面処理層を有する摺動部材の製造方法であって、
上記部材の表面処理層が、金属基材側から順に亜鉛めっき層、化成処理層、トップコート層を備え、上記化成処理層がクロム及び酸素を含有するものであり、
上記化成処理層の表面にシリカ化合物、アクリル樹脂、ポリウレタン樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂を備えることを特徴とする摺動部材の製造方法。 - 上記トップコート層を形成する工程が、付着量が0.3mg/m2以上のトップコート層を形成する処理であることを特徴とする請求項6に記載の摺動部材の製造方法。
- 上記トップコート層を形成する工程が、上記亜鉛めっき層及び化成処理層が形成された金属基材にトップコート層塗工液を浸漬塗工した後、空気を吹き付ける処理を含むことを特徴とする請求項6又は7に記載の摺動部材の製造方法。
- 上記トップコート層を形成する工程の後にさらに乾燥工程を備えることを特徴とする請求項6~8のいずれか1つの項に記載の摺動部材の製造方法。
- 上記トップコート層を形成する工程前に化成処理層を形成する工程を備え、
上記化成処理層を形成する工程が、厚さ50nm~300nmの化成処理層を形成する処理であることを特徴とする請求項6~9のいずれか1つの項に記載の摺動部材の製造方法。 - 上記化成処理層を形成する工程前に、金属基材表面に亜鉛めっき層を形成する工程を備え、
上記亜鉛めっき層を形成する工程が、電気めっきにより厚さ3μm~20μmの亜鉛めっき層を形成する処理であることを特徴とする請求項10に記載の摺動部材の製造方法。
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| BR112019018290-0A BR112019018290B1 (pt) | 2017-03-03 | Membro deslizante e método de fabricar o membro deslizante | |
| JP2019502427A JP6758611B2 (ja) | 2017-03-03 | 2017-03-03 | 高意匠摺動部材 |
| RU2019130982A RU2730326C1 (ru) | 2017-03-03 | 2017-03-03 | Высокодекоративный элемент скольжения |
| US16/488,727 US11788191B2 (en) | 2017-03-03 | 2017-03-03 | High-design sliding member |
| PCT/JP2017/008627 WO2018158959A1 (ja) | 2017-03-03 | 2017-03-03 | 高意匠摺動部材 |
| MX2019010129A MX2019010129A (es) | 2017-03-03 | 2017-03-03 | Miembro deslizante de alto diseño. |
| CN201780087499.6A CN110366606B (zh) | 2017-03-03 | 2017-03-03 | 高设计滑动构件 |
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| JP7046317B2 (ja) | 2018-06-11 | 2022-04-04 | 日産自動車株式会社 | ヘッドレストステー |
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| EP3591092B1 (en) | 2024-05-01 |
| MX2019010129A (es) | 2019-10-02 |
| JPWO2018158959A1 (ja) | 2020-01-23 |
| CN110366606B (zh) | 2021-11-16 |
| BR112019018290A2 (pt) | 2020-03-31 |
| EP3591092A4 (en) | 2020-03-04 |
| JP6758611B2 (ja) | 2020-09-23 |
| EP3591092A1 (en) | 2020-01-08 |
| RU2730326C1 (ru) | 2020-08-21 |
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