WO2014162692A1 - 軸受用炭素材料およびその軸受用炭素材料からなる摺動部材 - Google Patents
軸受用炭素材料およびその軸受用炭素材料からなる摺動部材 Download PDFInfo
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- WO2014162692A1 WO2014162692A1 PCT/JP2014/001720 JP2014001720W WO2014162692A1 WO 2014162692 A1 WO2014162692 A1 WO 2014162692A1 JP 2014001720 W JP2014001720 W JP 2014001720W WO 2014162692 A1 WO2014162692 A1 WO 2014162692A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/82—Coating or impregnation with organic materials
- C04B41/83—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
- C10M103/02—Carbon; Graphite
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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
- F16C33/16—Sliding surface consisting mainly of graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00344—Materials with friction-reduced moving parts, e.g. ceramics lubricated by impregnation with carbon
- C04B2111/00353—Sliding parts
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/616—Liquid infiltration of green bodies or pre-forms
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
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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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
- F16C2202/10—Porosity
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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
- F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
- F16C2206/02—Carbon based material
Definitions
- the present invention relates to a bearing carbon material used for a sliding bearing and a sliding member made of the bearing carbon material.
- Sliding bearings such as thrust sliding bearings and radial sliding bearings each include a sliding member having a sliding surface and a mating member.
- the sliding member and the mating member are held with their sliding surfaces in contact with each other.
- the sliding member slides relative to the mating member in a state where a load acts on the sliding surface of the mating member from the sliding member. Therefore, a material having high slidability is required for the sliding member.
- Patent Document 1 describes a carbon sliding material in which open pores of a porous carbon material are impregnated with tar pitch, resin, metal, or alloy. JP 2008-249129 A
- a contact portion between the sliding surface of the sliding member and the sliding surface of the mating member generates heat. Seizure is likely to occur between them.
- the seizure refers to welding between the sliding member and the mating member, damage to each sliding surface, or discoloration of each sliding surface.
- An object of the present invention is to provide a bearing carbon material capable of realizing a sliding bearing in which the occurrence of seizure is suppressed, and a sliding member made of the bearing carbon material.
- a bearing carbon material according to one aspect of the present invention is a bearing carbon material, and includes a porous carbon base material and an impregnation material made of resin or metal that is impregnated into the carbon base material.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 8 mm 3 / g or less.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m may be 5 mm 3 / g or less.
- the bearing carbon material may have a Shore hardness of 82 HS or less.
- the sliding member formed of the carbon material for the bearing is used for the sliding bearing, and even when a larger load is applied to the sliding bearing, the sliding surface of the mating member that contacts the sliding member is damaged. It is prevented.
- the bulk density of the carbon substrate may be 1.7 Mg / m 3 or more.
- the bulk density of the carbon base material is 1.7 Mg / m 3 or more, so that the inherent lubricity of carbon can be sufficiently maintained. is there.
- the bulk density of the carbon substrate may be 1.8 Mg / m 3 or less.
- the pore density smaller than 0.1 ⁇ m is sufficient for suppressing seizure because the bulk density of the carbon substrate is 1.8 Mg / m 3 or less. Can contribute.
- a sliding member according to another aspect of the present invention is a sliding member used for a sliding bearing, and is formed of the above-described bearing carbon material.
- a sliding bearing in which the occurrence of seizure is suppressed is realized.
- FIG. 1 is an exploded perspective view of a thrust slide bearing.
- FIG. 2 is an external perspective view of the thrust slide bearing of FIG.
- FIG. 3 is a longitudinal sectional view of the thrust slide bearing of FIG.
- FIG. 4 is an external perspective view of the radial sliding bearing.
- FIG. 5 is a longitudinal sectional view of the radial plain bearing of FIG.
- FIG. 6 is a graph showing the cumulative pore volume of Sample 1.
- FIG. 7 is a graph showing the cumulative pore volume of Sample 2.
- FIG. 8 is a graph showing the cumulative pore volume of Sample 3.
- FIG. 9 is a graph showing the cumulative pore volume of Sample 4.
- FIG. 10 is a graph showing the cumulative pore volume of Sample 5.
- FIG. 11 is a graph showing the cumulative pore volume of Sample 6.
- FIG. 12 is a graph showing the cumulative pore volume of Sample 7.
- FIG. 13 is a graph showing the cumulative pore volume of Sample 8.
- FIG. 14 is a graph showing the cumulative pore volume of Sample 9.
- FIG. 15 is a graph showing the cumulative pore volume of sample 10.
- FIG. 16 is a graph showing the cumulative pore volume of Sample 11.
- FIG. 17 is a graph showing the cumulative pore volume of Sample 12.
- FIG. 18 is a graph showing the cumulative pore volume of Sample 13.
- FIG. 19 is a graph showing the cumulative pore volume of sample 14.
- FIG. 20 is a longitudinal sectional view showing a configuration example of a canned motor pump.
- the carbon material for a bearing and the sliding member according to the present embodiment are used for a sliding bearing such as a thrust sliding bearing and a radial sliding bearing.
- FIG. 1 is an exploded perspective view of a thrust sliding bearing
- FIG. 2 is an external perspective view of the thrust sliding bearing of FIG. 1
- FIG. 3 is a longitudinal sectional view of the thrust sliding bearing of FIG.
- the thrust slide bearing 40 includes a rotation side sliding plate 41 and a fixed side sliding plate 42 each having an annular shape.
- the rotation side sliding plate 41 functions as a sliding member
- the fixed side sliding plate 42 functions as a counterpart member.
- the inner diameters of the rotating side sliding plate 41 and the stationary side sliding plate 42 are substantially equal.
- the outer diameter of the fixed sliding plate 42 is larger than the outer diameter of the rotating sliding plate 41.
- the rotation-side sliding plate 41 and the stationary-side sliding plate 42 have a sliding surface 41f and a sliding surface 42f that are in contact with each other.
- the fixed side sliding plate 42 is made of stainless steel.
- the rotation side sliding plate 41 is made of a bearing carbon material to be described later. Thereby, even when the thrust load acting on the rotation-side sliding plate 41 is large, seizure of the thrust sliding bearing 40 is suppressed.
- the seizure refers to welding between the rotating side member and the fixed side member, damage to the contact portion between the rotating side member and the fixed side member, or discoloration of the contact portion between the rotating side member and the fixed side member.
- FIG. 4 is an external perspective view of the radial plain bearing
- FIG. 5 is a longitudinal sectional view of the radial plain bearing of FIG.
- the radial sliding bearing 50 includes a rotation side sliding cylinder 51 and a fixed side sliding cylinder 52 each having a cylindrical shape.
- the rotation-side sliding cylinder 51 functions as a sliding member
- the fixed-side sliding cylinder 52 functions as a counterpart member.
- the outer diameter of the rotation-side sliding cylinder 51 is slightly smaller than the inner diameter of the fixed-side sliding cylinder 52. In a state where the rotation-side sliding cylinder 51 is inserted into the fixed-side sliding cylinder 52, the outer peripheral surface 51f of the rotation-side sliding cylinder 51 and the inner peripheral surface 52f of the fixed-side sliding cylinder 52 are in contact with each other.
- the rotation-side slide cylinder 51 rotates in the circumferential direction relative to the fixed-side slide cylinder 52, as indicated by a one-dot chain line arrow in FIGS. Further, when the radial sliding bearing 50 is used, a radial load directed to the inner peripheral surface 52f of the fixed-side sliding cylinder 52 acts on the rotating-side sliding cylinder 51, as indicated by thick arrows in FIGS.
- the fixed side sliding cylinder 52 is made of stainless steel.
- the rotation side sliding cylinder 51 is made of a bearing carbon material described later.
- Carbon material for bearing and its manufacturing method The carbon material for bearing used for said rotation side sliding plate 41 and rotation side sliding cylinder 51, and its manufacturing method are demonstrated.
- the bearing carbon material according to the present embodiment includes a carbon base material and an impregnation material.
- a carbon base material is produced as follows, for example. First, a binder is added to the carbon powder. Next, the mixture containing the carbon powder and the binder is formed into a predetermined shape by a press molding method, an extrusion molding method, or a cold isostatic pressing method. Then, a carbon base material is completed by baking a molded article.
- carbon powder artificial graphite, natural graphite, calcined coke, carbon black or coal tar pitch powder, or a mixed powder containing two or more kinds of these powders can be used.
- binder tar pitch, petroleum pitch, phenol resin, or the like can be used.
- the carbon substrate is impregnated as follows, for example.
- a resin material such as furan resin or phenol resin can be used.
- the carbon base material is immersed in the impregnation material (resin material in this example) in a chamber whose pressure is reduced from atmospheric pressure to a predetermined pressure.
- a high-pressure inert gas for example, nitrogen or argon
- the impregnation material penetrates into the fine voids in the carbon substrate.
- the carbon substrate is pulled up from the impregnated material. Thereby, the carbon material for bearings is completed.
- a metal material such as antimony, lead, copper, or an alloy thereof can be used instead of the resin material.
- a metal material such as antimony, lead, copper, or an alloy thereof
- the carbon substrate is first melted in a chamber reduced in pressure from atmospheric pressure to a predetermined pressure (in this example, in this example) Immerse in a metal material.
- a high-pressure inert gas for example, nitrogen or argon
- the impregnation material penetrates into the fine voids in the carbon substrate.
- the carbon substrate is pulled up from the impregnated material. Thereby, the carbon material for bearings is completed.
- sliding members of the sliding bearing in the example of FIGS. 2 and 4, the rotating side sliding plate 41 and the rotating side sliding cylinder 51) are produced. be able to.
- the produced carbon material for bearing includes a plurality of pores.
- the pore distribution in the carbon material for bearings can be measured by a mercury intrusion method using a mercury porosimeter. Specifically, according to the mercury intrusion method, the cumulative volume of pores having a size larger than a certain size (radius or diameter) can be measured.
- the radius and diameter of the pore refer to the radius and diameter of the pore measured by the mercury intrusion method regardless of the shape of the pore.
- the size of the pore is expressed by a diameter.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 8 mm 3 / g or less. In this case, as will be described later, when the bearing carbon material is used for the sliding member of the sliding bearing, the occurrence of seizure in the sliding bearing is suppressed.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is preferably 5 mm 3 / g or less. In this case, as will be described later, when the carbon material for a bearing is used for the sliding member of the sliding bearing, it is more sufficiently suppressed that seizure occurs in the sliding bearing.
- the cumulative pore volume of the carbon material for the bearing is, for example, the molding condition of the carbon substrate (molding pressure of the mixture, etc.), the firing condition of the carbon substrate (firing time or firing temperature, etc.), or the impregnation condition of the carbon substrate. (Impregnation time, impregnation temperature or pressure during the impregnation treatment) or the like.
- pores having a diameter larger than 0.1 ⁇ m are prepared by preparing a plurality of samples under different conditions and measuring the pore distribution by a mercury intrusion method using a mercury porosimeter as in the examples described later.
- the conditions under which the cumulative pore volume is 8 mm 3 / g or less can be specified.
- Conditions such as the carbon substrate molding conditions, the carbon substrate firing conditions, and the carbon substrate impregnation treatment conditions are such that the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 8 mm 3 / g or less. If not, it is not limited to a specific value or a specific range.
- each sample 1 to 14 when preparing each sample 1 to 14, first, about 40 parts by weight of a binder was added to 100 parts by weight of the carbon powder. Moreover, the carbon base material was completed by shape
- each carbon base material is treated with a furan resin (for example, 25 ° C.) at room temperature (for example, 25 ° C.).
- Each carbon substrate after the impregnation treatment was subjected to a heat treatment.
- samples 1, 3, 4, 5, 9, 11 to 14 were completed.
- the immersion time in the furan resin was set to a predetermined time of 3 hours to 24 hours.
- the molding pressure of the carbon substrate, the firing temperature of the carbon substrate, the firing time of the carbon substrate, the immersion time of the carbon substrate in the furan resin, the pressure in the chamber during the immersion of the carbon substrate in the furan resin By varying the preparation conditions such as the heat treatment temperature of the carbon base material after the impregnation treatment or the heat treatment time of the carbon base material after the impregnation treatment, the cumulative fineness of the samples 1, 3, 4, 5, 9, 11 to 14 is changed.
- the pore volume can be adjusted to different values.
- each carbon base material is phenolic resin (manufactured by Sumitomo Bakelite Co., Ltd .; PR-50781: viscosity 80 mPa) in the chamber. -It was immersed in s / 25 degreeC for 24 hours. Each carbon substrate after the impregnation treatment was subjected to a heat treatment. Thereby, Samples 2 and 8 were completed.
- the accumulated pore volumes of the samples 2 and 8 can be adjusted to different values by changing the production conditions such as the heat treatment time of the carbon base material after the impregnation treatment.
- the cumulative pore volume of Sample 6 can be adjusted by the production conditions such as the molding pressure of the carbon base material, the firing temperature of the carbon base material, or the firing time of the carbon base material in addition to the above production conditions.
- the cumulative pore volume of sample 7 can be adjusted by the production conditions such as the molding pressure of the carbon base, the firing temperature of the carbon base, or the firing time of the carbon base in addition to the above production conditions.
- Samples 1 to 14 have an annular shape. Each sample 1 to 14 has an outer diameter of 65 mm, an inner diameter of 29 mm, and a height of 8.5 mm.
- 6 to 19 are graphs showing the cumulative pore volumes of Samples 1 to 14, respectively. 6 to 19, the vertical axis represents the cumulative pore volume, and the horizontal axis represents the pore diameter. The value of the cumulative pore volume at each pore diameter represents the cumulative pore volume of pores having a diameter larger than the diameter. Therefore, the smaller the pore diameter on the horizontal axis, the larger the cumulative pore volume.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 2.2 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 4.0 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 1.1 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 1.7 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 0.7 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 2.3 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 0.5 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 1.5 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 6.8 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 7.8 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 0.2 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 1.6 mm 3 / g.
- the pores having a cumulative pore volume smaller than 0.1 mm 3 / g and having a diameter larger than 0.1 ⁇ m are smaller than 0.5 ⁇ m.
- the cumulative pore volume of was 0.2 mm 3 / g.
- pores having a cumulative pore volume having a diameter larger than 0.5 ⁇ m are smaller than 0.1 mm 3 / g and have a diameter larger than 0.1 ⁇ m.
- the cumulative pore volume of was 0.8 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 28.6 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 38.7 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 1.8 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 15.4 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 8.8 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 12.4 mm 3 / g.
- the cumulative pore volume of pores having a diameter larger than 0.5 ⁇ m is 2.7 mm 3 / g, and the pores having a diameter larger than 0.1 ⁇ m
- the cumulative pore volume was 12.9 mm 3 / g.
- the cumulative pore volume of pores having a diameter greater than 0.5 ⁇ m is 4.6 mm 3 / g, and the pores having a diameter greater than 0.1 ⁇ m
- the cumulative pore volume was 9.0 mm 3 / g.
- Table 1 shows the measurement results of the cumulative pore volumes of Samples 1 to 5
- Table 2 shows the measurement results of the cumulative pore volumes of Samples 6 to 9
- Table 3 shows the measurement of the cumulative pore volumes of Samples 10 to 14. Results are shown.
- each bearing carbon material was measured by the above method using a part of each bearing carbon material obtained in the process of producing Samples 1 to 14.
- the carbon material and the carbon material for bearings are the same.
- Tables 1 to 3 above show the measurement results of the bulk density of the carbon base materials of samples 1 to 14 and the bulk density of the carbon material for bearings.
- Shore hardness, bending strength, and compressive strength were measured as physical properties of Samples 1 to 14 using a part of Samples 1 to 14.
- the shore hardness was measured according to the shore hardness test-test method defined in JIS (Japanese Industrial Standards) Z 2246. A D type Shore hardness tester was used for the measurement of Shore hardness.
- the bending strength was measured according to the physical property test method for graphite material defined in JIS R 7212 using a 10 ⁇ 10 ⁇ 60 mm test piece.
- the compressive strength was measured in accordance with a physical property test method for graphite material defined in JIS R 7222 using a 10 ⁇ 10 ⁇ 10 mm test piece.
- Tables 1 to 3 above show the measurement results of Shore hardness, bending strength and compressive strength of Samples 1 to 14.
- each sample 1 to 14 was brought into contact with the sliding surface of the corresponding mating member.
- each sample 1 to 14 and the corresponding counterpart member were placed in 60 ° C. warm water.
- each sample 1-14 was slid relative to each counterpart member by rotating each sample 1-14 relative to the corresponding counterpart member using a motor. While maintaining the rotation speed of each sample 1 to 14 at 3000 rpm, the value of the current flowing through the motor was measured.
- each sample 1-14 After the start of rotation of each sample 1-14, the load applied to each sample 1-14 was increased by a certain value every 10 minutes.
- seizure occurs between each sample 1 to 14 and the corresponding member, the value of the current flowing through the motor changes sharply. Therefore, it is assumed that seizure has occurred at the time when the value of the current flowing through the motor changes sharply (in this example, when the rate of change of the current flowing through the motor exceeds 30 A / sec). The rotation was stopped.
- the maximum allowable loads of Samples 1 to 5 were 20.9 MPa, 17.4 MPa, 20.9 MPa, 20.9 MPa, and 12.2 MPa, respectively.
- the maximum allowable loads of Samples 6 to 9 were 20.9 MPa, 19.1 MPa, 15.6 MPa, and 13.9 MPa, respectively.
- the maximum allowable loads of Samples 10 to 14 were 3.5 MPa, 5.2 MPa, 5.2 MPa, 7.0 MPa, and 8.7 MPa, respectively.
- the maximum allowable load of the sliding bearing is preferably 10 MPa or more, more preferably 12 MPa or more, and further preferably 13 MPa or more.
- more preferable maximum allowable loads are indicated by “ ⁇ ”
- more preferable maximum allowable loads are indicated by “ ⁇ ”
- undesirable maximum allowable loads are indicated by “x”.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 8 mm 3 / g or less.
- seizure did not occur until the applied load reached at least 12.2 MPa.
- Tables 1 and 2 the cumulative pore volume in the case where seizure did not occur is underlined.
- samples 10 to 14 the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is larger than 8 mm 3 / g. For these samples 10 to 14, seizure occurred when the applied load was 8.7 MPa or less.
- the lower limit of the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is not particularly limited, but in samples 1 to 5 and 7 to 9, the cumulative pores having a diameter larger than 0.1 ⁇ m are used.
- the pore volume is 0.2 mm 3 / g or more.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 1 mm 3 / g or more.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 2 mm 3 / g or more.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 4 mm 3 / g or more.
- the sample 6 is smaller than the larger 0.1 mm 3 / g than the cumulative pore volume of 0 mm 3 / g of pores having a diameter greater than 0.1 [mu] m.
- the applied maximum load is as small as 8.7 MPa or less, so it is considered that no damage occurred on the mating member.
- Samples 1 to 9 have a Shore hardness of 75 HS or more and 109 HS or less. Thereby, it becomes possible to suppress the occurrence of seizure while ensuring the wear resistance of the sliding member.
- the Shore hardness of a sliding member is 75 HS or more.
- the Shore hardness of the sliding member is, for example, 109 HS or less, and when a large load is applied, it is preferably 82 HS or less as described above.
- Samples 1 to 9 have a bending strength of 64 MPa to 82 MPa and a compressive strength of 205 MPa to 350 MPa. Thereby, it becomes possible to suppress the occurrence of seizure while ensuring the mechanical strength of the sliding member.
- the bending strength of the sliding member is preferably 64 MPa or more.
- the compressive strength of the sliding member is preferably 205 MPa or more. Further, the bending strength of the sliding member is, for example, 82 MPa or less.
- the compressive strength of the sliding member is, for example, 350 MPa or less.
- the carbon substrate of the samples 1 to 9 having a bulk density of 1.74 mg / m 3 or more 1.80 mg / m 3 or less.
- the carbon substrate of Sample 10 to 14 having a bulk density of 1.74 mg / m 3 or more 1.81 mg / m 3 or less.
- Samples 1 to 9 have a bulk density of 1.7 Mg / m 3 or more and 1.8 Mg / m 3 or less, which is almost equivalent to Samples 10 to 14.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is 8 mm 3 / g or less.
- the cumulative pore volume of pores having a diameter larger than 0.1 ⁇ m is preferably 5 mm 3 / g or less.
- the Shore hardness of the bearing carbon material is preferably 82 HS or less.
- FIG. 20 is a longitudinal sectional view showing a configuration example of a canned motor pump.
- the canned motor pump 1 of FIG. 20 mainly includes a pump casing 10, an impeller 20, and a canned motor 30.
- the suction port 11p is formed at the upper end of the pump casing 10, and the discharge port 13p is formed at the lower end of the pump casing 10.
- An impeller 20 and a canned motor 30 are accommodated in the pump casing 10.
- the canned motor 30 includes a stator housing casing 33, a stator 34, a rotary shaft 35 extending in the vertical direction, a rotor 36, one thrust slide bearing 40, and two radial slide bearings 50.
- the impeller 20 is attached to the upper end of the rotating shaft 35.
- the stator housing casing 33 has a double tube structure in which both ends are closed.
- a stator 34 is accommodated between the inner tube and the outer tube. In this state, the stator housing casing 33 is fixed to the inner peripheral surface of the pump casing 10 so as to surround the rotating shaft 35.
- the rotor 36 is attached to the center of the rotating shaft 35 inside the stator housing casing 33.
- the one thrust slide bearing 40 and the two radial slide bearings 50 are attached to a pipe inside the stator housing casing 33.
- the rotary shaft 35 is supported by one thrust slide bearing 40 and two radial slide bearings 50 so as to be rotatable relative to the stator 34.
- the rotating shaft 35 and the impeller 20 are rotated by rotating the rotor 36.
- a liquid for example, water
- the liquid flowing in the pump casing 10 is discharged from the discharge port 13p.
- the thrust sliding bearing 40 and the radial sliding bearing 50 include the rotation side sliding plate 41 and the rotation side sliding cylinder 51 formed of a carbon material for bearings.
- the above-mentioned bearing carbon material can also be used for a sliding bearing provided in a mechanical structure (such as an engine or a turbine) other than a canned motor pump. In this case, the occurrence of seizure during use of the mechanical structure is suppressed.
- the rotation side sliding plate 41 and the rotation side sliding cylinder 51 are examples of sliding members.
- the present invention can be effectively used for a sliding bearing that slides under a load and a mechanical structure including the same.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
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- Health & Medical Sciences (AREA)
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Abstract
Description
図1はスラスト滑り軸受の分解斜視図であり、図2は図1のスラスト滑り軸受の外観斜視図であり、図3は図1のスラスト滑り軸受の縦断面図である。
上記の回転側摺動板41および回転側摺動筒51に用いられる軸受用炭素材料およびその製造方法について説明する。本実施の形態に係る軸受用炭素材料は、炭素基材および含浸材料を含む。
以下、異なる方法および条件で摺動部材の複数のサンプルを作製した。各サンプルについて、累積細孔容積を測定した後、摺動試験を行い、累積細孔容積と摺動試験の結果との関係について評価した。
上記実施の形態の方法に従って、それぞれ異なる作製条件で摺動部材のサンプル1~9,11~14を作製した。また、含浸処理を行わない点を除いて上記実施の形態と同じ方法に従ってサンプル10を作製した。
水銀ポロシメータを用いた水銀圧入法によりサンプル1~14の累積細孔容積をそれぞれ測定した。
サンプル1~14の作製の過程で形成される炭素基材の一部分を用いてサンプル1~14の炭素基材のかさ密度を測定した。かさ密度は、10×10×60mmの試験片を用いて、JIS R 7222に規定される黒鉛素材の物理特性試験方法に準じて測定した。
サンプル1~14の摺動試験方法について説明する。まず、サンプル1~14にそれぞれ対応する14個の相手部材を用意した。各相手部材は、ステンレス(SUS420J1)により作製した。また、各相手部材は、平坦な滑り面を有する。
上記の表1~表3に、サンプル1~14の摺動試験結果を示す。
本実施の形態に係る軸受用炭素材料においては、0.1μmよりも大きい直径を有する細孔の累積細孔容積が8mm3/g以下である。このような軸受用炭素材料を滑り軸受の摺動部材に用いた場合に、滑り軸受に焼付きが発生することが抑制される。
図2のスラスト滑り軸受40および図4のラジアル滑り軸受50は、例えばキャンドモータポンプに用いることができる。図20は、キャンドモータポンプの一構成例を示す縦断面図である。図20のキャンドモータポンプ1は、主としてポンプケーシング10、羽根車20およびキャンドモータ30からなる。
以下、請求項の各構成要素と実施の形態の各構成要素との対応の例について説明するが、本発明は下記の例に限定されない。
Claims (6)
- 軸受用炭素材料であって、
多孔質性の炭素基材と、
前記炭素基材に含浸される、樹脂または金属からなる含浸材料とを含み、
水銀圧入法により測定される細孔分布において、0.1μmよりも大きい直径を有する細孔の累積細孔容積が8mm3/g以下である、軸受用炭素材料。 - 水銀圧入法により測定される細孔分布において、0.1μmよりも大きい直径を有する細孔の累積細孔容積が5mm3/g以下である、請求項1記載の軸受用炭素材料。
- 82HS以下のショア硬さを有する、請求項1または2記載の軸受用炭素材料。
- 前記炭素基材のかさ密度は、1.7Mg/m3以上である、請求項1~3のいずれか一項に記載の軸受用炭素材料。
- 前記炭素基材のかさ密度は、1.8Mg/m3以下である、請求項1~4のいずれか一項に記載の軸受用炭素材料。
- 滑り軸受に用いられる摺動部材であって、請求項1~5のいずれか一項に記載の軸受用炭素材料により形成される、摺動部材。
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JP2015509895A JP6310906B2 (ja) | 2013-04-01 | 2014-03-25 | 軸受用炭素材料およびその軸受用炭素材料からなる摺動部材 |
KR1020157027134A KR20150135330A (ko) | 2013-04-01 | 2014-03-25 | 베어링용 탄소 재료 및 상기 베어링용 탄소 재료로 이루어진 슬라이딩 부재 |
EP14778703.0A EP2982877B1 (en) | 2013-04-01 | 2014-03-25 | Carbon material for bearings and sliding member formed of carbon material for bearings |
US14/781,337 US9902839B2 (en) | 2013-04-01 | 2014-03-25 | Carbon material for bearings and sliding member made of carbon material for bearings |
CN201480019335.6A CN105074243B (zh) | 2013-04-01 | 2014-03-25 | 轴承用碳材料和由该轴承用碳材料构成的滑动部件 |
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CN107473745A (zh) * | 2017-07-21 | 2017-12-15 | 西安交通大学 | 一种水润滑轴承浸渍石墨材料的制备方法 |
KR101996205B1 (ko) | 2019-01-28 | 2019-10-17 | 극동씰테크 주식회사 | 자동차 생산라인내 차량이송 대차용 탄소섬유 ?을 적용한 친환경 탄소베어링 및 그 제조방법 |
CN113045317B (zh) * | 2021-03-31 | 2023-01-10 | 东风汽车车轮随州有限公司 | 一种耐磨型石墨基自润滑轴承材料及其制备方法 |
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JPH1072266A (ja) * | 1996-08-29 | 1998-03-17 | Sumitomo Metal Ind Ltd | 多孔質ガラス状炭素およびその製造方法 |
JPH11180790A (ja) * | 1997-12-19 | 1999-07-06 | Toyo Tanso Kk | 摺動用炭素材及びその製造方法 |
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JP3457341B2 (ja) | 1992-08-25 | 2003-10-14 | 東洋炭素株式会社 | 複合材料、その製造方法及びその複合材料から成る摺動部材 |
JP4397500B2 (ja) * | 2000-03-27 | 2010-01-13 | Juki株式会社 | 多孔性炭素材軸受 |
JP2008249129A (ja) | 2007-03-06 | 2008-10-16 | Hitachi Chem Co Ltd | カーボン摺動材 |
TWI399354B (zh) | 2007-06-07 | 2013-06-21 | Ibiden Co Ltd | 石墨材料及石墨材料之製造方法 |
JP5581114B2 (ja) | 2010-05-21 | 2014-08-27 | 花王株式会社 | 鋳型造型用粘結剤組成物 |
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2014
- 2014-03-25 KR KR1020157027134A patent/KR20150135330A/ko not_active Application Discontinuation
- 2014-03-25 EP EP14778703.0A patent/EP2982877B1/en active Active
- 2014-03-25 CN CN201480019335.6A patent/CN105074243B/zh active Active
- 2014-03-25 JP JP2015509895A patent/JP6310906B2/ja active Active
- 2014-03-25 US US14/781,337 patent/US9902839B2/en active Active
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JPH05279005A (ja) * | 1992-03-30 | 1993-10-26 | Sumitomo Metal Ind Ltd | 高密度炭素材の製造方法 |
JPH1072266A (ja) * | 1996-08-29 | 1998-03-17 | Sumitomo Metal Ind Ltd | 多孔質ガラス状炭素およびその製造方法 |
JPH11180790A (ja) * | 1997-12-19 | 1999-07-06 | Toyo Tanso Kk | 摺動用炭素材及びその製造方法 |
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JP2009040635A (ja) * | 2007-08-09 | 2009-02-26 | Tokai Carbon Co Ltd | 多孔質炭素材料の製造方法 |
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US9902839B2 (en) | 2018-02-27 |
US20160032084A1 (en) | 2016-02-04 |
JPWO2014162692A1 (ja) | 2017-02-16 |
EP2982877A1 (en) | 2016-02-10 |
EP2982877A4 (en) | 2016-11-16 |
CN105074243A (zh) | 2015-11-18 |
KR20150135330A (ko) | 2015-12-02 |
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