CN105925347A - Composition for lubricating film, sliding member using the composition for lubricating film, and method of manufacturing the composition for lubricating film - Google Patents
Composition for lubricating film, sliding member using the composition for lubricating film, and method of manufacturing the composition for lubricating film Download PDFInfo
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- CN105925347A CN105925347A CN201610102738.8A CN201610102738A CN105925347A CN 105925347 A CN105925347 A CN 105925347A CN 201610102738 A CN201610102738 A CN 201610102738A CN 105925347 A CN105925347 A CN 105925347A
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- lubricating film
- sliding members
- molybdenum disulfide
- basic material
- disulfide particles
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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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
-
- 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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/40—Lubricating compositions characterised by the base-material being a macromolecular compound containing nitrogen
- C10M107/44—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
-
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/04—Resilient guiding parts, e.g. skirts, particularly for trunk pistons
-
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/08—Constructional features providing for lubrication
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
- C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2080/00—Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Paints Or Removers (AREA)
Abstract
A composition for a lubricating film includes molybdenum disulfide particles which are dispersed, and a binding resin, and is a composition for coating a surface of a base material made of metal with a lubricating film in which the molybdenum disulfide particles are bound together by the binding resin. The composition for a lubricating film contains 50 mass % to 70 mass % of the molybdenum disulfide particles with respect to a total amount of the molybdenum disulfide particles and the binding resin. An average particle size of the molybdenum disulfide particles is in a range of 0.1 mum to 3.0 mum.
Description
Background of invention
1. invention field
The present invention relates to for the lubrication film composition by the surface lubricating film coating of basic material,
Wherein molybdenum disulfide particles is that scattered and scattered molybdenum disulfide particles is bonded in one by binder resin
Rise, use its sliding members, and production method.
2. description of Related Art
Up to now, for improving the sliding properties of sliding members, by the surface lubricating film of basic material
Coating.This lubricating film comprises such as polytetrafluoroethylgranule granule, graphite granule, molybdenum disulfide particles etc. and makees
For kollag, and granule is by binder resin (matrix resin) such as polyamide-imide resin, poly-
Imide resins etc. are bonded together.As it has been described above, comprise kollag by lubricating film, can
Strengthen the slidability of sliding members.
As technology, the open No.2010-196813 (JP 2010-196813 A) of such as Japanese patent application
Propose sliding members, wherein formed on the surface of basic material by resin binder with relative to always
Amount is the lubricating film of the kollag formation of 40 mass % to 60 mass %.Herein, solid lubrication
Agent is formed by the granule of graphite, molybdenum bisuphide etc., and as resin binder, uses polyamide-acyl sub-
Polyimide resin, polybenzimidazole resin or polyimide resin.
Summary of the invention
Herein, as described in Figure 7, the surface 91a of the basic material 91 owing to being made of metal uses logical
Normal lubricating film 92 is lubricating film coating, the surface 92a of lubricating film 92 as described in JP 2010-196813 A
Roughness (i.e. the roughness of the surface 9a of sliding members 9) be likely to be dependent on the table of basic material 91
The roughness of face 91a.
But, in serving as lubricating film 92, the particle mean size of the granule 93 of contained kollag (comprises
The particle mean size of granule in lubrication film composition) be greatly in the case of, the surface of lubricating film 92
Roughness may become more more coarse than the surface roughness of basic material 91.It addition, even in raising
The amount (amount of the granule being included in lubrication film composition) of grain 93 is to strengthen the situation of living property of anticol
Under, identical phenomenon occurs.
Therefore, even if the surface 91a of the basic material of sliding members 91 smooths out further, unit of sliding
The slidingsurface of part is less likely to smoothened.It is difficult to obtain low Frictional Slipping spy accordingly, it is possible to exist
The situation of property.
The present invention provides lubrication film composition, and described compositions reduces the basic material at sliding members
Surface on the surface roughness of lubricating film that formed and allow that the surface of lubricating film holds during sliding
Easily smooth out, use its sliding members, and production method.
According to an aspect of the present invention, lubrication film composition comprises scattered molybdenum disulfide particles and bonding
Resin.Lubrication film composition is for being coated with by the surface lubricating film of the basic material being made of metal
The compositions covered, wherein molybdenum disulfide particles is bonded together by binder resin.Lubricating film combines
It is that 50 mass % are to 70 mass % that thing comprises relative to the total amount of molybdenum disulfide particles and binder resin
Molybdenum disulfide particles.The particle mean size of molybdenum disulfide particles is that 0.1 μm is to 3.0 μm.
According to this aspect, owing to comprising 50 mass % to 70 mass % molybdenum disulfide particles, initially intend
Conjunction characteristic strengthens, and therefore the surface of lubricating film easily smooths out during sliding.Additionally, due to two sulfur
The particle mean size changing molybdenum granule is 0.1 μm to 3.0 μm, particle size reduction, and therefore the surface of lubricating film becomes
Smooth.Therefore, when using sliding members, easily wear and tear in the surface of lubricating film, and therefore lubricating film is (sliding
Dynamic element) initial matching characteristic can strengthen.
In this aspect, binder resin can be polyamide-imide resin.
In this aspect, it is considered to granule bond properties, the adhesive force on base material surface, lubricating film
Thermostability etc..
In this aspect, it is provided that sliding members, wherein the surface of basic material scribbles and is combined by lubricating film
The lubricating film that thing is formed.
In this aspect, multiple potholes can be formed from the teeth outwards.The prominent valley degree of depth on surface can be
0.4 μm to 1.0 μm, and the center line average roughness on surface can be that 0.4 μm is to 1.0 μm.
As inventor learns from the experiment being described later on, by setting up lubricant film surface, unit of i.e. sliding
Relation between prominent valley degree of depth Rvk and the center line average roughness Ra of the slidingsurface of part,
Low frictional behavior can be realized, strengthen the initial matching characteristic of the slidingsurface of sliding members simultaneously.
In this aspect, sliding members can be the piston of internal combustion engine.It addition, lubricating film can be at piston skirt
Formed on the surface in portion.
In this aspect, it is provided that the method producing sliding members, wherein by the surface of basic material with by moistening
The lubricating film coating that sliding film composition is formed.
In this aspect, this method can include being formed multiple pothole, and is being formed with lubrication film composition
Lubricating film is formed on the surface of pothole.Pothole passes through shot peening by grit relative to basic material
Surface advances to have in the prominent valley degree of depth and 1.5 μm to 2.0 μm of 1.5 μm to 2.0 μm
Heart line mean roughness and formed.Grit is harder than basic material.
Therefore, can easily produce there is the sliding members of above-mentioned characteristic.
In this aspect, it is provided that the method according to producing sliding members produces the sliding members as piston
Method.The method may be included in after forming multiple pothole on surface, piston skirt, will form pothole
The surface lubricating film in skirt section coats.
According to aspects of the present invention, the table of the lubricating film formed on the base material surface of sliding members
Surface roughness reduces, and the surface of lubricating film easily smooths out during sliding.
Accompanying drawing is sketched
Below with reference to the accompanying drawings the feature of example embodiment of the present invention, advantage and technology and industry are described
Importance, the element that wherein similar numeral expression is similar, and wherein:
Figure 1A is the schematic diagram illustrating the method producing sliding members according to an embodiment, and is
Illustrate the figure that the surface of basic material processes；
Figure 1B is the schematic diagram illustrating the method producing sliding members according to embodiment, and for illustrating
Surface processes the figure of basic material；
Fig. 1 C is the schematic diagram illustrating the method producing sliding members according to embodiment, and for illustrating
Wherein the surface of basic material scribbles the figure of sliding members of lubricating film；
Fig. 2 is to illustrate the surface roughness according to embodiment 1-3 and the sliding members of comparative example 1-5
Figure；
Fig. 3 is to illustrate according to embodiment 1-3 and the figure of the wear test of the sliding members of comparative example 1-5；
Fig. 4 is to illustrate according to embodiment 1-3 and the abrasion of the lubricating film of the sliding members of comparative example 1-5
The figure of amount；
Fig. 5 is to illustrate when using according to embodiment 4 and 5 and during the piston of comparative example 6, rotates frequency
The figure of the relation between rate-BMEP and FMEP；
Fig. 6 is to illustrate when using the piston according to embodiment 5 and comparative example 7, rotational frequency-BMEP
And the figure of the relation between FMEP；With
Fig. 7 is the schematic diagram illustrating the sliding members according to correlation technique.
Embodiment describes in detail
Figure 1A, 1B and 1C used below describe one embodiment of the invention.Figure 1A,
1B and 1C is the schematic diagram illustrating the method producing sliding members according to embodiment, and Figure 1A is
Illustrate the figure that the surface of basic material processes.Figure 1B is to illustrate the figure that surface processes basic material.Figure
1C is the figure illustrating sliding members, and wherein the surface of basic material scribbles lubricating film.
About lubrication film composition, according to the lubrication film composition of this embodiment for for will be by
The compositions of surface 10b lubricating film 20 coating of the basic material 10 that metal is made, such as Fig. 1 C
Described.Lubrication film composition comprises molybdenum disulfide particles and for the binder resin (tree bonded by granule
Fat binding agent).
It is 50 matter that lubrication film composition comprises relative to the total amount of molybdenum disulfide particles and binder resin
The molybdenum disulfide particles of amount % to 70 mass %.It addition, the particle mean size of molybdenum disulfide particles is
0.1 μm is to 3.0 μm.
Herein, " granularity " mentioned in the description represents by laser diffraction/scatter-type particle size distribution
Volume-cumulative particle mean size (the D that measuring method is measured50), " center line average roughness Ra " represents basis
The value that JIS B 0601-1994 measures, and " the prominent valley degree of depth (the oil accumulation degree of depth) Rvk " expression basis
The value that JIS B 0601-2001 measures.
In this embodiment, 50 mass % are comprised to 70 mass % molybdenum disulfide particles by allowing
And to make the particle mean size of molybdenum disulfide particles be 0.1 μm to 3.0 μm, described below at sliding members 1
Basic material 10 surface 10b on the surface roughness of lubricating film 20 that formed can be and basis
The level of surface roughness that the roughness of the surface 10b of material 10 is identical.Therefore, lubricating film 20
Surface can smooth out.Additionally, when using sliding members 1, easily wear and tear in the surface of lubricating film 20.
Therefore, the initial matching characteristic of lubricating film 20 (sliding members 1) can strengthen.
Herein, in the case of the amount at molybdenum disulfide particles is more than 70 mass % or at molybdenum bisuphide
The particle mean size of granule be more than 3.0 μm in the case of, the surface roughness of the lubricating film 20 of formation
Improve, and can interfere with the smoothing of the slidingsurface 1a of sliding members 1.
On the other hand, in the case of the amount of molybdenum disulfide particles is less than 50 mass %, intend initial
In the conjunction stage, lubricating film 20 is less likely to abrasion, and the initial matching deterioration in characteristics of sliding members 1.
It is difficult to produce the molybdenum disulfide particles with the particle mean size less than 0.1 μm.
Herein, have 0.1 μm to the particle mean size of 3.0 μm molybdenum disulfide particles can easily by will
The crushing such as commercially available molybdenum disulfide particles and classification and obtain.It is further contemplated that the curing of the effect above
The particle mean size of molybdenum granule is that 0.5 μm is to 1.5 μm.
Binder resin is preferably capable bonding the heat stable resin of molybdenum disulfide particles.The example includes being selected from
By epoxy resin, phenolic resin, polyamide and polyamide-imide resin or comprise one class
Or the resin of the group of the polymer alloy composition of two classes or more multiclass.In these, polyamide-acyl is sub-
Polyimide resin has the thermostability of excellence, even if being also less likely to deterioration when for each class lubricating oil, and
There is good tribological properties.
Can be by preparing molybdenum bisuphide with above-mentioned mixing ratio for forming the lubrication film composition of lubricating film
Granule and binder resin, and use kneader etc. to be stirred with the suitable organic solvent as solvent by gains
Mix and stir mixing and prepare.During producing lubrication film composition, preferably by molybdenum disulfide particles with it
Middle binder resin preparation is dissolved under the state in organic solvent mixing.
As organic solvent, it is suitably used volatile polar aprotic solvent etc..Instantiation includes
Ketone, such as acetone, butanone, methyl iso-butyl ketone (MIBK) and Ketohexamethylene, esters, such as methyl acetate
And ethyl acetate, aromatic hydrocarbon, such as dimethylbenzene and toluene, organohalogen compound, such as methyl chloride
Imitative, trichloro ethylene and trichorotrifluoroethane, METHYLPYRROLIDONE (NMP), the iso-pyrrolidine of methyl
Ketone (MIP), dimethylformamide (DMF) and dimethyl acetylamide (DMAC).Can particularly preferably use
METHYLPYRROLIDONE (NMP).Non-polar solven also is used as organic solvent.
Additionally, lubrication film composition also can comprise the promotion scattered dispersant of kollag, enhancing
Resin adhesive force on kollag or resin adhesive force on basic material silane coupled
Agent, and control capillary surfactant.Additionally, can add appropriate additive (suspending agent,
Thickening agent, defoamer, levelling agent etc.) to improve storage stability, film matching performance etc. without departing from this
The purpose of invention.
About sliding members and production method, first prepare the basic material being made of metal.Basis material
Material is preferably the basic material being made up of a class or the many metalloids selected from aluminum, ferrum, copper, nickel, chromium and titanium
Material, and also can be the basic material being made up of the alloy comprising metal.As required, also can make
Process such as the metal base material of alkali degreasing with standing surface.
Herein, the surface roughness of the base material surface being made of metal can be depending on use environment and
Suitably set.In this embodiment, formed by lubricating film composition when lubricating film described below
Time, the surface roughness (surface roughness of sliding members) of lubricating film becomes the table close to basic material
The value of surface roughness.
Such as, lubricating film can be by being applied to shown in Figure 1A be made of metal by lubrication film composition
The surface (cutting or bottom surface) of basic material upper and formed.But, in this embodiment, carry out
Surface of base processes so that the surface of basic material 10 smooths.Specifically, as shown in Figure 1A, logical
Cross shot peening by the grit 40 harder than basic material 10 relative to the surface of basic material 10
10a advances.By shot peening, formed and wherein form pothole so that basic material 10 has 1.5 μm
Prominent valley degree of depth Rvk and the center line average roughness Ra of 1.5 μm to 2.0 μm to 2.0 μm
Surface 10b (seeing Figure 1B).Therefore, can obtain display is used according to the lubricating film of this embodiment
The surface 10b of basic material 10 optimal for the effect of compositions.
Such as, in the case of basic material is made up of aluminium alloy (Al-Si base alloy) wherein, at shot-peening
Use during processing and there is 20 μm ferrous alloy grit 40 to the particle mean size of 300 μm.First
First, by above-mentioned grit 40 in the atmosphere that there is oxygen (the most in atmosphere) at predetermined electric arc height
Under conditions of value, the surface 10a relative to basic material 10 advances.
As it has been described above, the available basic material wherein forming multiple potholes with above-mentioned surface property
The surface 10b of 10.It addition, prominent valley degree of depth Rvk and center line average roughness Ra can pass through
Change the pill propulsioning condition etc. during pellet diameters, progradation to adjust.
Then, the surface 10b lubrication film composition coating of the basic material 10 of pothole will be formed
To form lubricating film 20.The coating of the surface 10b of basic material 10 is by the method known, such as
Brushing, spraying, roller coat, use screen-printing deposition, blade coating, according to pad dyeing method coating and dip-coating
Carry out.Industrially, coating can be carried out by air-atomizing.
After lubrication film composition is applied on the surface 10b of basic material 10, add
Heat treatment makes the surface of basic material 10 can be as shown in Figure 1 C removing organic solvent from compositions
Scribble lubricating film 20.
Prominent valley degree of depth Rvk on gained lubricating film 20 surface is that 0.4 μm is to 1.0 μm and lubricating film
The center line average roughness Ra on 20 surfaces is that 0.4 μm is to 1.0 μm.Therefore, by making slip unit
Pass between prominent valley degree of depth Rvk and the center line average roughness Ra of the slidingsurface 1a of part 1
Within the above range, the surface roughness of slidingsurface 1a is less than the state of correlation technique wherein in system
Under, slidingsurface 1a can strengthen at the aspect of performance keeping lubricating oil.Therefore, low friction spy can be realized
Property, strengthen the initial matching characteristic of the slidingsurface 1a of sliding members 1 simultaneously.
Herein, the thickness of lubricating film is arbitrary, but preferably 6 μm are to 16 μm.By making thickness
Within the above range, the molybdenum disulfide particles with above-mentioned particle mean size within comprising above-mentioned scope
In the case of, lubricating film can smooth out so that allows that slidingsurface depends on the surface of basic material, and
Make slidingsurface within the above range.When the slip table that lubrication film composition is applied to piston skirt
On face and when forming lubricating film, the reduction of piston thermal conductivity can be suppressed.
In the related, when by grinding stone etc. by the surface grinding of basic material, surface has bar
Trace, actual surface pressing improves.Therefore, initial matching characteristic can not be mixed in a large number by allowing
Molybdenum disulfide particles and strengthen.But, in this embodiment, will be processed by above-mentioned surface of base
And the surface 10b lubricating film 20 of the basic material 10 smoothed out coats, and slidingsurface 1a
Actual surface pressing reduces by reducing the particle mean size of contained molybdenum disulfide particles in lubricating film 20,
Thus suppress abrasion.Therefore, even if being mixed into larger amount of molybdenum disulfide particles, also ensure that wear resistence and
Do not make granule separation etc..Therefore, the initial matching characteristic of lubricating film 20 strengthens and can stage shape in early days
Become smooth slidingsurface.
Embodiments of the invention are described below.
[embodiment 1]
As the basic material of sliding members, preparation has the size of 15.7mm × 6.5mm × 10.1mm
With the aluminium alloy castings of surface roughness Rz (corresponding to the Ra of 0.2 μm) of 0.8 μm (in JIS standard
AC8B), and make the surface of basic material stand alkali degreasing.
Subsequently, preparation has the molybdenum disulfide particles of the particle mean size of 2 μm as kollag, and
Preparation is dissolved in as the polyamide-imide resin (PAI) in the NMP of organic solvent as being used for gluing
Close the resin of granule.By 50 mass % molybdenum disulfide particles and 50 mass %, (quality % resin, except having
Machine solvent is outer) polyamide-imide resin is blended as shown in table 1, and mixes, and thus prepares lubricating film
Use compositions.Subsequently, basic material is prepared under conditions of 80 DEG C × 30 minutes heating, will lubrication
Film composition is applied on the surface of basic material, by gains the condition of 180 DEG C × 90 minutes
Lower heating, thus forms the lubricating film of the thickness with 13 μm on basic material.
Herein, the particle mean size of molybdenum disulfide particles is by according to PIDS (Polarization Intensity Differential scattering)
Measuring method use laser diffraction/scatter-type particle size distribution measurement equipment (Nikkiso Co., Ltd. manufacture
Microtrac MT300) measure.Particle mean size is measured by NMP
The volume-cumulative mean particle size D of molybdenum disulfide particles50.It addition, molybdenum disulfide particles and polyamide-acyl
The ratio (quality %) of imide resin passes through weighing measurement.
[embodiment 2]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, 60 mass % molybdenum disulfide particles and 40 mass % polyamide-imide resins are mixed with
Preparation lubrication film composition.
[embodiment 3]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, 70 mass % molybdenum disulfide particles and 30 mass % polyamide-imide resins are mixed with
Preparation lubrication film composition.
[comparative example 1]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, relative to 70 mass % polyamide-imide resins, 20 mass % are had 7 μm
The molybdenum disulfide particles of particle mean size, the graphite of the particle mean size with 2.5 μm of 7 mass %
Politef (PTFE) granule of the particle mean size with 4 μm of grain and 3 mass % is as solid
Mix lubricant is with preparation lubrication film composition.
[comparative example 2]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, 40 mass % molybdenum disulfide particles and 60 mass % polyamide-imide resins are mixed with
Preparation lubrication film composition.
[comparative example 3]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, 80 mass % molybdenum disulfide particles and 20 mass % polyamide-imide resins are mixed with
Preparation lubrication film composition.
[comparative example 4]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, by sub-to graphite granule used in the comparative example 1 of 50 mass % and 50 mass % polyamide-acyl
Polyimide resin mixing is with preparation lubrication film composition.
[comparative example 5]
Sliding members produces in the same manner as in example 1.Difference with embodiment 1 such as table 1
Shown in, by PTFE granule used in the comparative example 1 of 50 mass % and 50 mass % polyamide-
Imide resin mixing is with preparation lubrication film composition.
<measurement of the surface roughness of lubricating film>
Measure according to embodiment 1-3 and the surface roughness of the lubricating film of the sliding members of comparative example 1-5
(center line average roughness Ra).Center line average roughness Ra is to survey according to JIS B 0601-1994
The value of amount.Result is shown in table 1 and Fig. 2.Fig. 2 is for illustrating according to embodiment 1-3 and comparative example
The figure of the surface roughness of the sliding members of 1-5.Shown in Fig. 2, based on dotted line, the surface of material is thick
Rugosity.
<initial matching test>
As it is shown on figure 3, would correspond to the block of the sliding members of above-described embodiment 1-3 and comparative example 1-5
Sample 51, ring sample 52 and lubricating oil 53 combine, and carry out wear test (ring-block test
(LFW-1 test), is manufactured by Falex Corporation).
Specifically, as ring sample 52, preparation is made up of casting pig (FC250 in JIS standard)
And there is the sample of surface roughness Rz of the external diameter of 35mm, the width of 8.8mm and 0.8 μm.
Lubricating oil 53 is poured into allow in a part of ring sample dip lubrication oil 53 in oil bath 54, and make ring
Sample 52 rotates with the peripheral speed of 0.11m/s, makes oil temperature be maintained at 80 DEG C to try at ring simultaneously
Oil film is formed on the surface of sample 52.Long run test by make block sample 51 under the load of 22.5N with
The outer surface of ring sample 52 contacts and carries out 5 minutes.
The wearing depth of the lubricating film of the sliding members of block sample 51 it is measured as after off-test, and
Represent as wear extent.As lubricating oil, use base oil (commercially available of the SAE viscosity grade of 0W-20
Motivation oil).Result is shown in table 1 and Fig. 4.Fig. 4 is for demonstrating according to embodiment 1-3 and comparative example
The figure of the lubricating film wear extent of the sliding members of 1-5.Dotted line in Fig. 4 is by the experience etc. of inventor
The wear extent lower limit determined with the good initial matching characteristic of offer.
[table 1]
(result 1)
As shown in Figure 2 and Table 1, the lubrication film composition according to embodiment 1-3 the lubrication formed
The surface roughness of film is less than those of comparative example 1,3,4 and 5.
That is, the feelings formed by the lubrication film composition according to comparative example 1,3,4 and 5 at lubricating film
Under condition, the surface roughness of lubricating film is roughening.It is thought that because of the feelings in comparative example 1,4 and 5
Under condition, in lubrication film composition, the particle mean size of contained kollag is more than that of embodiment 1-3
A bit.On the other hand, the situation of comparative example 3 is by kollag (two contained in lubrication film composition
Molybdenum sulfide particle) amount more than embodiment 1-3 those and cause.
On the other hand, as shown in Figure 4 and Table 1, according to embodiment 1-3 and the slip of comparative example 3-5
The wear extent of the lubricating film of element is more than those of comparative example 1 and 2.It is thought that implement according to because of
The amount of the molybdenum disulfide particles of the lubricating film of the sliding members of example 1-3 and comparative example 3-5 is more than comparative example 1
With 2 those.But, owing to the surface roughness of the lubricating film of comparative example 3-5 is higher than embodiment 1-3
Surface roughness, the ability forming oil film is low.Therefore, it can be said that according to embodiment 1-3
The lubricating film of sliding members has the ability of those the higher formation oil films than comparative example 1-5 and has
Good initial matching characteristic.
From the above description, it is believed that when 50-70 mass % molybdenum disulfide particles is included in lubricating film group
In compound and when its particle mean size is 0.1 μm to 3.0 μm, lubricating film has corresponding to basic material
The surface roughness (offer flatness) of surface roughness, therefore provides good initial matching characteristic.
[embodiment 4]
As sliding members, the piston (basis of the internal combustion engine that preparation is formed by AC8 base aluminium alloy castings
Material), and carry out cutting work on the surface of piston skirt.Therefore, the surface in skirt section is formed
Multiple streaks.Then, according to the prominent paddy at multiple points in JIS B 0601-2001 measurement skirt surface
Portion's degree of depth (the oil accumulation degree of depth) Rvk, and measure its centrage average roughness Ra according to said method.
Therefore, the maximum of prominent valley degree of depth Rvk is 1.0 μm and its minima is 0.2 μm (prominent paddy
Portion's degree of depth Rvk is that 0.2 μm is to 1.0 μm), the maximum of center line average roughness Ra is 4.8 μm
And its minima is 2.5 μm (center line average roughness Ra is that 2.5 μm are to 4.8 μm).
Lubrication film composition same as in Example 1 is used to exist under the same conditions as example 1
Lubricating film is formed on surface.Lubricating film after being formed is measured by method same as mentioned above
Prominent valley degree of depth Rvk at the upper multiple points in surface (slidingsurface) and center line average roughness Ra.
As result, prominent valley degree of depth Rvk be 0.2 μm to 1.0 μm, and center line average roughness
Ra is that 2.5 μm are to 4.8 μm.
[embodiment 5]
In the way of the same as in Example 4, the internal combustion engine that preparation is formed by AC8 base aluminium alloy castings
Piston (basic material), and on the surface of piston skirt, carry out surface reason.Specifically, use
Than those harder grits of basic material (specifically, by the ferrum of the particle mean size with 50 μm
The pill that sill is formed), on the surface in skirt section, form multiple pothole by shot peening.
Measure the prominent valley degree of depth (the oil accumulation degree of depth) Rvk at the multiple points in skirt surface subsequently
With center line average roughness Ra.Therefore, the maximum of prominent valley degree of depth Rvk be 2.0 μm and
Its minima is 1.5 μm (prominent valley degree of depth Rvk is that 1.5 μm are to 2.0 μm), and centrage is put down
All the maximum of roughness Ra is 2.0 μm and its minima is 1.5 μm (center line average roughness
Ra is that 1.5 μm are to 2.0 μm).
Use lubrication film composition in the same manner as in Example 1 under the same conditions as example 1
Form lubricating film from the teeth outwards.Lubricating film after being formed is measured by method same as mentioned above
The upper multiple points in surface (slidingsurface) at prominent valley degree of depth Rvk and center line average roughness
Ra.As result, prominent valley degree of depth Rvk be 0.4 μm to 1.0 μm, and centrage is the thickest
Rugosity Ra is that 0.4 μm is to 1.0 μm.
[comparative example 6]
In the way of the same as in Example 4, the internal combustion engine that preparation is formed by AC8 base aluminium alloy castings
Piston (basic material), and as embodiment 4 carried out on the surface of piston skirt cut work.Cause
This, form multiple streak in skirt surface.Prominent valley degree of depth Rvk of skirt surface and centrage
Average roughness Ra with in those identical scopes described in embodiment 4.
The lubrication film composition identical with comparative example 1 is used under conditions of identical with comparative example 1
Form lubricating film from the teeth outwards.Measure the upper multiple points in surface (slidingsurface) of lubricating film after being formed
Prominent valley degree of depth Rvk at place and center line average roughness Ra.The prominent valley of comparative example 6 is deep
Degree Rvk and center line average roughness Ra with in those identical scopes described in embodiment 4.
[comparative example 7]
In the way of in the same manner as in Example 5, the internal combustion engine that preparation is formed by AC8 base aluminium alloy castings
Piston (basic material), and for the surface of piston skirt, by shot peening in skirt surface
The multiple pothole of upper formation.Prominent valley degree of depth Rvk of skirt surface and center line average roughness Ra
With in those identical scopes described in embodiment 5.
The lubrication film composition identical with comparative example 1 is used under conditions of identical with comparative example 1
Form lubricating film from the teeth outwards.Measure the upper multiple points in surface (slidingsurface) of lubricating film after being formed
Prominent valley degree of depth Rvk at place and center line average roughness Ra.The prominent valley of comparative example 7 is deep
Degree Rvk and center line average roughness Ra with in those identical scopes described in embodiment 5.
<actual machine test>
Use according to embodiment 4 and 5 and the piston of comparative example 6 and 7, carry out actual machine test.
Specifically, piston has rushing of the discharge capacity of about 660cc, the cylinder bore of 94mm and 95mm
Journey, 0W-20 is used as engine oil, and oil/water temperature is set to 80 DEG C ± 1 DEG C.Subsequently, inciting somebody to action
Rotational frequency in each stage improves to 2000rpm and changes brake mean-effective pressure (BMEP)
Time, measure frictionmean effective pressure (FMEP).Result is shown in Fig. 5 and 6.Fig. 5 is for explaining formula
When using according to embodiment 4 and 5 and during the piston of comparative example 6, rotational frequency-BMEP with
The figure of the relation between FMEP.Fig. 6 is to demonstrate when using according to embodiment 5 and the work of comparative example 7
During plug, the figure of the relation between rotational frequency-BMEP and FMEP.
(result 2)
As it is shown in figure 5, the frictionmean effective pressure (FMEP) of embodiment 4 and 5 is less than comparative example 6
, and the frictionmean effective pressure (FMEP) of embodiment 5 is less than embodiment 4.It addition, such as figure
Shown in 6, the frictionmean effective pressure (FMEP) of embodiment 5 is less than comparative example 7.
From this point, it is believed that owing to the lubrication film composition according to embodiment 1 is for embodiment 4 He
In 5, even if molybdenum disulfide particles is included in, lubricating film can be formed and do not make surface roughness big
Surface roughness in basic material.It is therefore contemplated that due to the easy shape of lubricating film of embodiment 4 and 5
Becoming oil film, the FMEP of embodiment 4 and 5 gets lower than comparative example 6.
Particularly, in the case of the lubricating film of embodiment 5, its prominent valley degree of depth (the oil accumulation degree of depth)
It is little regardless of its centrage average roughness Ra that Rvk is more than in embodiment 4.Therefore, recognize
For in the case of embodiment 5, ratio is more readily formed thicker oil film, and embodiment in embodiment 4
FMEP in 5 gets lower than in embodiment 4.However, it is believed that in the case of comparative example 7,
Owing to using the lubrication film composition according to comparative example 1, it is difficult to depend on the superficiality of basic material
Can, and the FMEP in comparative example 7 goes above in embodiment 5.
Additionally, when measuring multiple surface roughness of the lubricating film in skirt section after actual machine is tested,
The surface roughness (Ra of such as 2.1 μm) of the lubricating film according to embodiment 4 is less than (the example of comparative example 6
Ra such as 2.3 μm).Similarly, according to surface roughness (such as 0.72 μm of the lubricating film of embodiment 5
Ra) less than (Ra of such as 1.01 μm) of comparative example 7.Relation between surface roughness and reality
Before the machine testing of border, relation therebetween is identical.From this result and above-mentioned FMEP result, it is believed that root
Have more special than those higher initial matchings of comparative example 6 and 7 according to the sliding members of embodiment 4 and 5
Property.
Although describing embodiment of the present invention in detail, the invention is not restricted to the embodiment above, and
Various design can be made become without departing from the spirit of the present invention described in appended claims and description
Change.
Claims (8)
1. lubrication film composition, it is characterised in that comprise:
Scattered molybdenum disulfide particles；With
Binder resin, wherein
Lubrication film composition is the group of the surface lubricating film coating of the basic material for being made of metal
Compound, wherein molybdenum disulfide particles is bonded together by binder resin,
It is 50 mass % that lubrication film composition comprises relative to the total amount of molybdenum disulfide particles and binder resin
To the molybdenum disulfide particles of 70 mass %, and
The particle mean size of molybdenum disulfide particles is that 0.1 μm is to 3.0 μm.
Lubrication film composition the most according to claim 1, it is characterised in that binder resin is polyamide
-imide resin.
3. sliding members, it is characterised in that the surface of basic material scribbles by according to claim 1 or 2
Lubrication film composition formed lubricating film.
Sliding members the most according to claim 3, it is characterised in that:
Multiple potholes are formed from the teeth outwards,
The prominent valley degree of depth on surface be 0.4 μm to 1.0 μm, and
The center line average roughness on surface is that 0.4 μm is to 1.0 μm.
5. according to the sliding members of claim 3 or 4, it is characterised in that:
Sliding members is the piston of explosive motor, and
Lubricating film is formed on the surface of piston skirt.
6. the method producing sliding members, wherein by the surface of basic material with by according to claim 1
Or the lubricating film coating of the lubrication film composition formation of 2.
Method the most according to claim 6, it is characterised in that including:
Form multiple pothole, pothole by shot peening by grit relative to basic material surface advance with
Allow that surface has the prominent valley degree of depth and the center of 1.5 μm to 2.0 μm of 1.5 μm to 2.0 μm
Line mean roughness and formed, grit is harder than basic material；With
On the surface forming pothole, lubricating film is formed with lubrication film composition.
The method of production sliding members the most according to claim 7 and the method that produces piston, use cunning
Dynamic element is as piston, and described method farther includes:
After the surface of piston skirt is formed multiple pothole, the skirt surface lubricating film of pothole will be formed
Coating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-038150 | 2015-02-27 | ||
| JP2015038150A JP6133916B2 (en) | 2015-02-27 | 2015-02-27 | Manufacturing method of sliding member and manufacturing method of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105925347A true CN105925347A (en) | 2016-09-07 |
Family
ID=56682700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610102738.8A Pending CN105925347A (en) | 2015-02-27 | 2016-02-24 | Composition for lubricating film, sliding member using the composition for lubricating film, and method of manufacturing the composition for lubricating film |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160251589A1 (en) |
| JP (1) | JP6133916B2 (en) |
| CN (1) | CN105925347A (en) |
| DE (1) | DE102016103273A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167326A (en) * | 2018-12-17 | 2021-07-23 | 大丰工业株式会社 | Sliding member |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368448A (en) * | 2015-12-11 | 2018-08-03 | 道康宁东丽株式会社 | The noise reducing method of sliding component, component and mechanical device other than the sliding component for image forming apparatus |
| JP7390774B2 (en) | 2016-11-17 | 2023-12-04 | 大豊工業株式会社 | sliding member |
| JP6813341B2 (en) | 2016-11-17 | 2021-01-13 | 大豊工業株式会社 | Resin composition and sliding member |
| DE102020124723A1 (en) | 2020-09-22 | 2022-03-24 | Bayerische Motoren Werke Aktiengesellschaft | Friction-optimized piston, reciprocating engine and motor vehicle |
| CN112251135A (en) * | 2020-11-02 | 2021-01-22 | 中国科学院兰州化学物理研究所 | High-strength long-life solid lubricating coating for main fuel pump of aircraft engine |
| JP2022094593A (en) | 2020-12-15 | 2022-06-27 | スズキ株式会社 | Piston of internal combustion engine and manufacturing method thereof |
| JP2023080767A (en) | 2021-11-30 | 2023-06-09 | スズキ株式会社 | Piston for internal combustion engine and method for manufacturing the same |
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| JPH07118709A (en) * | 1993-10-21 | 1995-05-09 | Taiho Kogyo Co Ltd | Sliding material |
| JP3133209B2 (en) * | 1994-03-10 | 2001-02-05 | トヨタ自動車株式会社 | Composition for forming lubricating film and sliding bearing using the same |
| JP3245064B2 (en) * | 1996-07-18 | 2002-01-07 | 大豊工業株式会社 | Plain bearing |
| JP4507028B2 (en) * | 1999-07-23 | 2010-07-21 | 株式会社リケン | Coating composition for sliding member and piston ring for internal combustion engine |
| JP3927358B2 (en) * | 2000-09-01 | 2007-06-06 | トヨタ自動車株式会社 | Composition for sliding member |
| JP2006161563A (en) * | 2004-12-02 | 2006-06-22 | Honda Motor Co Ltd | Piston for internal combustion engine |
| JP5060223B2 (en) * | 2007-09-12 | 2012-10-31 | トヨタ自動車株式会社 | Piston for internal combustion engine |
| JP2010196813A (en) | 2009-02-25 | 2010-09-09 | Daido Metal Co Ltd | Sliding member |
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2015
- 2015-02-27 JP JP2015038150A patent/JP6133916B2/en active Active
-
2016
- 2016-02-24 CN CN201610102738.8A patent/CN105925347A/en active Pending
- 2016-02-24 DE DE102016103273.5A patent/DE102016103273A1/en not_active Withdrawn
- 2016-02-25 US US15/053,659 patent/US20160251589A1/en not_active Abandoned
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|---|---|---|---|---|
| CN1211594C (en) * | 2000-07-27 | 2005-07-20 | 大丰工业株式会社 | Sliding bearing |
| CN101134923A (en) * | 2006-08-30 | 2008-03-05 | 本田技研工业株式会社 | Double-layer lubrication coating composition, double-layer lubrication coating and piston having same coating |
| US20100083827A1 (en) * | 2008-10-08 | 2010-04-08 | Art Metal Mfg Co., Ltd. | Method for surface treatment of a skirt portion of a piston for an internal combustion engine and a piston for an internal combustion engine |
| CN102199474A (en) * | 2011-04-29 | 2011-09-28 | 安徽工业大学 | Dry film lubricant used for metal parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167326A (en) * | 2018-12-17 | 2021-07-23 | 大丰工业株式会社 | Sliding member |
| CN113167326B (en) * | 2018-12-17 | 2022-09-27 | 大丰工业株式会社 | Sliding member |
| US11499111B2 (en) | 2018-12-17 | 2022-11-15 | Taiho Kogyo Co., Ltd. | Sliding member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6133916B2 (en) | 2017-05-24 |
| JP2016160293A (en) | 2016-09-05 |
| DE102016103273A1 (en) | 2016-09-01 |
| US20160251589A1 (en) | 2016-09-01 |
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