WO2014017052A1 - Joint de roulement - Google Patents

Joint de roulement Download PDF

Info

Publication number
WO2014017052A1
WO2014017052A1 PCT/JP2013/004375 JP2013004375W WO2014017052A1 WO 2014017052 A1 WO2014017052 A1 WO 2014017052A1 JP 2013004375 W JP2013004375 W JP 2013004375W WO 2014017052 A1 WO2014017052 A1 WO 2014017052A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
bearing seal
rubber
layer
seal according
Prior art date
Application number
PCT/JP2013/004375
Other languages
English (en)
Inventor
Shigeharu Saigusa
Takanori HASHIO
Original Assignee
Toyo Seal Industries Co., 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 Toyo Seal Industries Co., Ltd. filed Critical Toyo Seal Industries Co., Ltd.
Priority to CN201380037654.5A priority Critical patent/CN104471111B/zh
Publication of WO2014017052A1 publication Critical patent/WO2014017052A1/fr

Links

Images

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
    • 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
    • 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
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • 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
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • F16C33/7856—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race with a single sealing lip
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2204/40—Alloys based on refractory metals
    • F16C2204/44—Alloys based on chromium
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
    • F16C2300/42—Application independent of particular apparatuses related to environment, i.e. operating conditions corrosive, i.e. with aggressive media or harsh conditions

Definitions

  • This invention relates to a bearing seal used for a rolling bearing.
  • the bearing seal is made up of a ring-shaped core metal and a thin annular rubber member bonded to the core metal by an adhesion layer which is coated on the core metal with an adhesive bond.
  • a cold-rolled steel sheet (SPCC) or a zinc-plated steel sheet (SECC) which is annularly formed by press-work, is used for the core metal.
  • SPCC cold-rolled steel sheet
  • SECC zinc-plated steel sheet
  • the adhesive bond is simply direct-applied to these sheet steels, these sheet steels cannot be strongly bonded to the rubber member.
  • the cold-rolled steel sheet or zinc-plated steel sheet with zinc phosphate coating are used.
  • FIG. 3 illustratively shows changes of state of a conventional bearing seal corroded by an acid, such as organic acid, or an alkaline substance.
  • the zinc-plated steel sheet is a sheet steel having a zinc-plated layer 21 on a ground metal of a base metal 20, as shown in a state A of FIG. 3.
  • the zinc-plated layer 21 is stuck to a rubber member 24 via a zinc phosphate layer 22 and an adhesive layer 23, wherein the zinc phosphate layer 22 is generated onto the zinc-plated layer 21 by chemical conversion treatment so that use of the adhesive bond to the zinc-plated steel sheet becomes effective, and wherein the adhesive layer 23 of the adhesive bond is coated on the zinc phosphate layer 22 (refer to Patent Literature 1).
  • the bearing is used for various operating environments. For example, when the bearing is used in a state where the bearing is dipped in a transmission oil, this transmission oil passes through the bearing seal, soaks between the inner ring and the outer ring, and mixes with grease, and generates an organic acid which is generally denoted as R-COOH (R: alkyl group) under the operating environments such as a high temperature. This organic acid corrodes the bearing seal.
  • R-COOH R: alkyl group
  • the bearing may be used in a state where the bearing seal is dipped in grease, antirust oil, engine oil, T/M oil, ATF, brake oil, ice machine oil, and cooling water (coolant).
  • the organic acid formic acid, propionic acid, and/or the other meta-carboxylic acid etc. are generated by an oxidation degradation of the liquid in which the bearing is dipped, and also the similar corrosions are occurred under an inorganic acid environment, such as a battery fluid (dilute sulfuric acid) and a cleaning fluid (cleaning agent), and alkaline environment.
  • the acid such as the organic acid or the alkali
  • the rubber member 24 and the adhesive layer 23 as shown in a state B, and corrodes the zinc-plated layer 21 and the zinc phosphate layer 22.
  • thickness of each layer will be decreased by eluting zinc Zn 2+ from the zinc-plated layer 21 or the zinc phosphate layer 22, as shown in a state C.
  • layers will be exfoliated each other, as shown in a state D.
  • rubber separates, and a sealing effect is lost, and the bearing will be destroyed by heat due to entering a foreign substance into the bearing, or leaking the grease from the bearing.
  • the present invention is for solving the above-mentioned conventional problems.
  • the present invention aims to provide a bearing seal for the bearing being able to be stably used for a long time under the operating environments such as an environment of an elevated temperature, which is also exposed to the organic acid etc. penetrating the rubber member and the adhesive bond, by advancing the corrosion resistance property against the organic acid etc. of the bearing seal.
  • the present invention provides the bearing seal, which seals a space between an inner ring and an outer ring of a rolling bearing which holds plural rolling elements arranged rotatably between the inner ring and the outer ring, comprising: an annular core metal; and a rubber member bonded on a surface of the core metal by an adhesion layer which is an adhesive bond coated on the surface of the core metal; wherein the core metal includes, (a) a base material made of metal, (b) a layer acting as a protective film formed on a surface of the base material, wherein the layer is (b-1) a metal-plated layer including chromium but not including zinc, which generates passive state film to protect the base material from corrosion, or (b-2) a metal-plated layer using a metal which has a lower ionization tendency than iron, which protects the base material from corrosion, and (c) a chromium hydrate oxide layer formed on a surface of the layer by chromic acid treatment.
  • the core metal is annularly formed by press-work from a plane steel sheet having a chrome-plated layer on its surface, wherein a surface of the chrome-plated layer has a chromium hydrate oxide layer formed by chromic acid treatment.
  • the core metal is formed by steps of forming an annular plate from a plane iron steel sheet by press-work, forming the chrome-plated layer on the surface of the annular plate, and then forming the chromium hydrate oxide layer on the chrome-plated layer.
  • the metal including chromium but not zinc, each of which generates a passive state film is either one of chromium, aluminum, molybdenum, titanium, zirconium, and antimony.
  • the metal has the lower ionization tendency than iron is nickel, tin or copper.
  • the adhesive bond is selected from a phenol based bond, an epoxy based bond, a silane based bond, and a bond mixed thereof.
  • the rubber member is selected from nitrile butadiene rubber (NBR), hydrogenation nitrile rubber (H-NBR), acrylic rubber (ACM), fluoro rubber (FKM), EPDM, silicone rubber (VMQ), and the urethane rubber (AU).
  • NBR nitrile butadiene rubber
  • H-NBR hydrogenation nitrile rubber
  • ACM acrylic rubber
  • FKM fluoro rubber
  • EPDM EPDM
  • silicone rubber VMQ
  • urethane rubber urethane rubber
  • the base metal is protected by the protective film formed on its surface, wherein the protective film is (i) the passive state film formed on the metal-plated layer, in case that the metal generates passive state film protecting the base material from corrosion, including chromium but excepting zinc, or (ii) the metal-plated layer having lower ionization tendency in comparison with that of iron, in case that the metal protects the base material from corrosion due to its lower ionization tendency in comparison with that of iron.
  • the metal-plated layer and chromium hydrate oxide layer between the base metal and the adhesive layer have the high corrosion resistance property to the acid or the alkali.
  • the bearing seal can protect the base metal, and also it can prevent a separation of the rubber member from the base metal, thereby the bearing seal can be stably used for a long period of time, for example, even if the bearing seal is exposed to the organic acid etc. which penetrate the rubber member and the adhesive bond under environment such as the high temperature.
  • FIG. 1 is a sectional view showing a structure of a bearing according to an embodiment of the present invention.
  • FIG. 2 shows (a) sectional view showing a structure of a bearing seal, (b) expanded sectional view of a structure of a base metal of the bearing seal and a rubber member, and (c) sectional view illustrating a protective action against an acid such as an organic acid or alkaline substances, by a passive state film of a chromium hydrate oxide and a chrome-plated.
  • FIG. 3 is a sectional view showing changes of state of the conventional bearing seal which is corroded under environment exposed to the acid such as the organic acid, or to the alkaline.
  • a bearing seal of the present invention comprises an annular core metal and a thin annular rubber member bonded on the surface of the core metal by an adhesive layer which is an adhesive bond coated over a surface of the core metal, and wherein the core metal comprises a base metal made of iron, a metal-plated layer which acts as a protective film preventing corrosion of the base metal, and a chromium hydrate oxide layer formed on the metal-plated layer.
  • the metal-plated layer which acts as a protective film is, for example, a metal-plated layer forming a passive state film, or a metal-plated layer made of a metal of which an ionization tendency is smaller than the base metal.
  • the core metal comprising the above-mentioned structure
  • a corrosion resistance property against an acid or an alkali of a layer between the base metal and the adhesive layer is improved.
  • a protection of the base metal and a protection of the adhesive state between the base metal and the rubber member are realized, and thereby a long-term use of the bearing seal can be realized.
  • the bearing seal of the present invention indicates not only a high corrosion resistance property under an ordinal operating environment at the room temperature, for example, about a temperature of 24 degrees centigrade etc., but also a high corrosion resistance property under a specific operating environment exposed to the acid or alkali at high temperature 100-200, for example, heated by a high speed rotation of the bearing or a motion of an engine in case that the bearing seal is used for a bearing in the engine room of an automobile.
  • FIG. 1 shows a cross section of a bearing 1 using bearing seals 6a and 6b according to Embodiment 1.
  • the bearing 1 stores two or more rolling elements 4 between a cylindrical inner ring 2 and an outer ring 3, and rotatably holds them.
  • the two or more rolling elements 4 are held by two holding fixtures 5a and 5b in appropriate positions between the inner ring 2 and the outer ring 3.
  • Outer edges of the two bearing seals 6a and 6b are connected with corresponding concaved portions 3a, 3b positioned at inner surface of the outer ring 3, and also inner edges of that hold the inner ring 2 so that the inner ring 2 can slide-ably rotate against the annular bearing seals 6a, 6b.
  • the bearing seals 6a and 6b are formed by bonding thin annular rubber members 8a and 8b onto annular core metals 7a and 7b by means of adhesive bond.
  • Peripheral part each of the bearing seals 6a and 6b has an outside diameter which can make the bearing seals 6a and 6b elastically fit to the concave portion 3a and 3b of the outer ring 3 by pressurizing, due to the elasticity of the rubber, that is, they have the slightly larger outside diameter than the diameter of the concave portion 3a and 3b.
  • Inclined side surfaces 6c and 6d of the bearing seals 6a and 6b can snap-fit to the concave portions 3a and 3b by pushing down it toward directions indicated by arrows 9a and 9b from the position indicated by dotted lines.
  • Inner circumference portions of the bearing seal 6a and 6b are positioned by slightly touching back faces 2a and 2b so as to hold the inner ring 2 between the bearing seals, without disturbing a rotation of the inner ring 2.
  • FIG. 2 (a) shows a structure of the bearing seal 6a.
  • the bearing seal 6b has a similar structure forming the bearing seal 6a in upside-down order as described in this figure, so a redundant explanation is omitted here.
  • FIG. 2 (b) shows an enlarged view of the portion indicated by dotted line B1 in FIG. 2 (a).
  • FIG. 2 (c) illustrates a protective action against an organic acid, by a passive state film of a chromium hydrate oxide and a chrome-plated.
  • the bearing seal 6a comprises a core metal 7a and a rubber member 8a bonded on the surface of the core metal 7a by an adhesive layer 10a which is an adhesive bond.
  • the core metal 7a comprises a base metal 11a made of iron, a chrome-plated (chromium metal) layer 12a which acts as a protective film formed on a surface of the iron base metals 11a, and a chromium hydrate oxide layer 13a formed on the chrome-plated layer 12a by a chromic acid treatment.
  • tablette 1 shows that experimental results about resistance property against separation about first and second examples wherein, in the first example, the bearing seal 6a having the chromium hydrate oxide layer 13a formed on the chrome-plated layer 12a is used (mass 140mg/m 2 of the chrome-plated layer 12a, mass 15mg/m 2 of the chromium hydrate oxide layer 13a), and in the second example, the bearing seal 6a having a tin layer is used instead of the chrome-plated layer 12a. Also, for comparison, the experiment result of the conventional bearing seal (comparative example) having the zinc phosphate layer on the zinc-plated layer is shown. According to the experimental result, separation of the rubber member 8a occurred in case of the comparative example, but it did not occur in case of the first and second examples.
  • tablette 2 shows that experimental results about occurrence of rust in case of several bearing seals (samples 1-a to 1-f), each of which has a varied mass of the chrome-plated layer 12a within range of 10 to 250 mg/m 2 and a constant mass (for example, 15mg/m 2 ) of the chromium hydrate oxide layer 13a, when the bearing seals have been soaked in a 3% sulfuric acid at a temperature of 25 degrees centigrade, for the 24 hours. From this experimental result, it is found that the 20 - 250 mg/m 2 chrome-plated layer 12a is desirable. For detail, in case that the mass of the chrome-plated layer 12a is less than 10 mg/m 2 , a lesser corrosion resistance property is shown.
  • mass of the chrome-plated layer 12a is larger than 10 mg/m 2 , better corrosion resistance property is shown in response to the increment of the mass 20mg/m 2 , 80 mg/m 2 and so on. However, after the mass of the chrome-plated layer 12a becomes more than about 250 mg/m 2 , noteworthy improvement of the corrosion resistance property is not recognized.
  • tablette 3 shows that experimental results about the existence of separation (peeling resistance property) of the rubber member 8a from the chromium hydrate oxide layer 13a in case of several bearing seals (samples 1-g to 1-l), each of which has a varied mass of the chromium hydrate oxide layer 13a within range of 1 to 35 mg/m 2 and a constant mass (for example, 140mg/m 2 ) of chrome-plated layer 12a, when the bearing seals have been soaked in a 3% sulfuric acid at the temperature of 25 degrees centigrade, for the 24 hours. From this experimental result, it is found that the 3 - 35 mg/m 2 chromium hydrate oxide layer 13a is desirable.
  • a peeling off the rubber member 8a occurs.
  • mass of the chromium hydrate oxide layer 13a is larger than 1 mg/m 2
  • better peeling resistance property is shown in response to the increment of the mass 3mg/m 2 , 9 mg/m 2 , and so on.
  • mass of the chromium hydrate oxide layer 13a becomes more than about 35 mg/m 2 , noteworthy improvement of the peeling resistance property is not recognized.
  • the adhesive layer 10a uses adhesive bond selected from adhesive bonds of phenol system, epoxy system, silane system, and the adhesive bond mixed thereof.
  • the rubber member 8a uses one rubber selected from nitrile butadiene rubber (NBR), hydrogenation nitrile rubber (H-NBR), acrylic rubber (ACM), fluoro rubber (FKM), EPDM, silicone rubber (VMQ), and polyurethane rubber (AU).
  • NBR nitrile butadiene rubber
  • H-NBR hydrogenation nitrile rubber
  • ACM acrylic rubber
  • FKM fluoro rubber
  • EPDM silicone rubber
  • VMQ silicone rubber
  • AU polyurethane rubber
  • the adhesive layer 10a and the rubber member 8a can use the other material instead of above mentioned materials.
  • the iron base metal 11a will be corroded, for example, when the bearing 1 is exposed to the organic acid which passes through the rubber member 8a in a state where the bearing 1 is used in the state being dipped in the transmission oil.
  • the chromium-plated layer 12a forms the passive state film, and thereby prevents the corrosion of the base material 11a.
  • the chromium hydrate oxide layer 13a is a chain-conjunct material of the chrome oxide and the chromium hydroxide, and has the strong corrosion resistance property. Therefore, the chromium hydrate oxide layer 13a can prevent the corrosion of chromium component.
  • the chromium hydrate oxide layer 13a can keep a strong adhesion state with respect to the adhesion layer 10a for a long term, by the high adhesion property.
  • the chromium hydrate oxide layer 13a acts as a oxidation (protection) coat and therefore prevents the corrosion both of the chromium component, and the under laid chromium-plated layer.
  • the chromium-plated layer 12a and the chromium hydrate oxide layer 13a which is a the conversion treatment layer, have the high corrosion resistance property and exfoliation which are provided with the acid, such as the organic acid, or the alkaline substances 14, so that the bearing seal 6a has the high rust prevention and adhesive property which is requested to a seal.
  • First manufacturing method comprises a process of first step for preparing a flat thin steel sheet comprising the iron base materials 11a, the chromium-plated layer 12a formed on the surface of the iron base material 11a, and the chromium hydrate oxide layer 13a formed by performing chromate treatment on the chromium-plated layer 12a.
  • the method further comprises a process of second step for forming the annular core metal 7a by press-work to the prepared sheet steel.
  • the method further comprises a process of third step for forming a bearing seal 6a having a desired shape which is formed by steps comprising of preparing a metal mold so as to form a desired shaped seal, arranging the core metal 7a coated with adhesive bond and the rubber member 8a, into the metal mold, and pressing and heating the metal mold so as to form the bearing seal 6a.
  • Second manufacturing method comprises a process of first step for preparing a base material 11a formed annularly by press-work to a flat thin iron steel sheet.
  • the method further comprises a process of second step for forming a chromium hydrate oxide layer 13a which is formed by steps comprising of forming a chromium-plated layer 12a on the base material 11a, and performing chromate treatment onto the chromium-plated layer 12a.
  • the method further comprises a process of third step for forming a bearing seal 6a by performing the same processes of the third process of the first manufacturing method as described above.
  • the bearing seal 6a manufactured by this second manufacturing method shows better corrosion resistance property against the acid, such as the organic acid, or the alkaline substances because the core metal 7a has the homogeneous chromium-plated layer 12a and the chromium hydrate oxide layer 13a.
  • the bearing seals 6a and 6b having the above-mentioned structure can protect the base material 11a, even if the bearing seals 6a and 6b are put in the specific operating environment exposing it to the acid, such as the organic acid etc. or alkali substances, which penetrate the rubber member 8a and the adhesive layer 10a. At the same time, the bearing seals 6a and 6b can prevent a separation of the rubber member 8a from the base material 11a. Therefore, the bearing seals 6a and 6b can be used stably for a long time.
  • the core metal 7a can be made of a metal selected from aluminum, molybdenum, titanium zirconium, antimony, and etc, but except zinc, wherein these metals can form the passive state film on their own surface.
  • the core metal 7a can also be made of a metal selected from nickel, tin, copper and etc, wherein these metals have lower ionization tendency than iron, thereby corrosion of the base metal can be prevented.
  • the present invention is not limited to the above embodiments, and can be modified variously within the scope of the invention.
  • a metal such as gold or silver can also be used, wherein the metal has a lower ionization tendency than iron and can prevent corrosion of the base metal.
  • the bearing seal of the present invention has the high corrosion resistance property, it can be stably used for a long time in the motorcar and also in any mechanical device having a driving portion using the bearing under various environments, in which the bearing seal is exposed to the acid, especially such as the organic acid, or the alkaline substances.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

Cette invention concerne un joint de roulement présentant une longue stabilité de fonctionnement dans un environnement acide ou alcalin du fait de l'amélioration de sa résistance à la corrosion par les acides organiques etc. Ledit joint de roulement qui assure l'étanchéité d'un espace entre une bague intérieure et une bague extérieure d'un roulement comprend : un noyau métallique annulaire (7a) et un élément en caoutchouc (8a) collé à une surface du noyau métallique par une couche adhésive. Ledit noyau métallique (7a) comprend : (a) un matériau de base en fer, (b) une couche servant de film protecteur formée sur une surface du matériau de base, ladite couche étant (b-1) une couche métallisée (12a) au moyen d'un métal comprenant du chrome mais pas de zinc qui génère un film à l'état passif, ou bien (b-2) une couche métallisée au moyen d'un métal qui présente une tendance à l'ionisation inférieure à celle du fer, qui protège le matériau de base conte la corrosion ; et (c) une couche d'oxyde de chrome hydraté (13a) formée sr une surface de ladite couche. Ledit joint de roulement présente une longue stabilité de fonctionnement du fait qu'il assure la protection du matériau de base dans un environnement acide ou alcalin et empêche le décollement de la couche adhésive.
PCT/JP2013/004375 2012-07-26 2013-07-17 Joint de roulement WO2014017052A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380037654.5A CN104471111B (zh) 2012-07-26 2013-07-17 轴承密封件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-165687 2012-07-26
JP2012165687A JP6017216B2 (ja) 2012-07-26 2012-07-26 軸受シール

Publications (1)

Publication Number Publication Date
WO2014017052A1 true WO2014017052A1 (fr) 2014-01-30

Family

ID=49996880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/004375 WO2014017052A1 (fr) 2012-07-26 2013-07-17 Joint de roulement

Country Status (3)

Country Link
JP (1) JP6017216B2 (fr)
CN (1) CN104471111B (fr)
WO (1) WO2014017052A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104275135A (zh) * 2014-09-29 2015-01-14 常州回天新材料有限公司 防腐反应釜
WO2016010679A1 (fr) * 2014-07-14 2016-01-21 Stoneage, Inc. Dispositif de retardement de vitesse visqueux à palier isolé pour buses rotatives
US10926274B2 (en) 2018-10-12 2021-02-23 Stoneage, Inc. Viscous speed retarding device for rotary nozzles with internal piston for thermal expansion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257935A (zh) * 2015-10-09 2016-01-20 蚌埠市天源气体有限责任公司 一种低温储罐使用的耐急冷性密封圈
CN109369997A (zh) * 2018-09-29 2019-02-22 嘉科（无锡）密封技术有限公司 一种密封金属用橡胶及其制备方法
CN112954098B (zh) * 2019-12-11 2023-04-11 深圳市万普拉斯科技有限公司 工件制造方法、工件和移动终端

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000087987A (ja) * 1998-09-14 2000-03-28 Nippon Seiko Kk 軸受シール材
JP2002357227A (ja) * 2001-03-29 2002-12-13 Nsk Ltd 転がり軸受
JP2006009894A (ja) * 2004-06-24 2006-01-12 Nsk Ltd シール

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7547146B2 (en) * 2002-02-27 2009-06-16 Nsk Ltd. Rolling bearing seal or shield member

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000087987A (ja) * 1998-09-14 2000-03-28 Nippon Seiko Kk 軸受シール材
JP2002357227A (ja) * 2001-03-29 2002-12-13 Nsk Ltd 転がり軸受
JP2006009894A (ja) * 2004-06-24 2006-01-12 Nsk Ltd シール

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016010679A1 (fr) * 2014-07-14 2016-01-21 Stoneage, Inc. Dispositif de retardement de vitesse visqueux à palier isolé pour buses rotatives
US10118185B2 (en) 2014-07-14 2018-11-06 Stoneage, Inc. Isolated bearing viscous speed retarding device for rotary nozzles
AU2015290193B2 (en) * 2014-07-14 2019-05-23 Stoneage, Inc. Isolated bearing viscous speed retarding device for rotary nozzles
CN104275135A (zh) * 2014-09-29 2015-01-14 常州回天新材料有限公司 防腐反应釜
US10926274B2 (en) 2018-10-12 2021-02-23 Stoneage, Inc. Viscous speed retarding device for rotary nozzles with internal piston for thermal expansion
USRE49573E1 (en) 2018-10-12 2023-07-11 Stoneage, Inc. Viscous speed retarding device for rotary nozzles with internal piston for thermal expansion

Also Published As

Publication number Publication date
CN104471111B (zh) 2016-09-21
JP6017216B2 (ja) 2016-10-26
JP2014025107A (ja) 2014-02-06
CN104471111A (zh) 2015-03-25

Similar Documents

Publication Publication Date Title
WO2014017052A1 (fr) Joint de roulement
JP2016169797A (ja) 金属ガスケット素材板及びその製造方法
JP2008540964A (ja) 密封されるラジアル転がり軸受特に自動車の車輪軸受
US20130240306A1 (en) Brake shims and methods of forming same
CN105308368A (zh) 橡胶-金属叠层垫片材料
CN203847704U (zh) 密封装置
US20070254760A1 (en) Corrosion resistant roller chain
US20120207536A1 (en) Anti-corrosion coating for ball joint
JP2018040436A (ja) シール体、シールアダプタ及びシール部材
CN108463523A (zh) 涂布剂、表面覆盖弹性体及表面覆盖橡胶金属层叠体
JP6302367B2 (ja) コーティング剤
EP1484520A3 (fr) Joint d'étanchéité pour un roulement et roulement équipé d'un tel joint
CN202937808U (zh) 一种聚四氟乙烯涂层的燃油密封垫圈
JP2010190282A (ja) 転がり軸受
DE102010050721A1 (de) Abgedichtete Groß-Perola
JP2013091853A (ja) 摺動部材
WO2018131312A1 (fr) Matériau pour cales de frein
CA2728945A1 (fr) Palier a roulement pour applications sous-marines
JP4437414B2 (ja) 車輪用軸受装置
CN110869221A (zh) 具有涂层的车轮轴承装置
JP5637198B2 (ja) モータ用転がり軸受
CN108688404B (zh) 一种驱动轴与轮毂的安装结构
CN203750535U (zh) 一种化工设备用的防腐保护层
JP2019095064A (ja) ブレーキシム用素材
CN215171529U (zh) 一种耐高温深沟球轴承

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13823267

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13823267

Country of ref document: EP

Kind code of ref document: A1