CN109996901A - Iron series sintered body substrate surface formed oxidation overlay film, be formed with the sliding component of the oxidation overlay film and with the equipment of the sliding component - Google Patents
Iron series sintered body substrate surface formed oxidation overlay film, be formed with the sliding component of the oxidation overlay film and with the equipment of the sliding component Download PDFInfo
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- CN109996901A CN109996901A CN201780072209.0A CN201780072209A CN109996901A CN 109996901 A CN109996901 A CN 109996901A CN 201780072209 A CN201780072209 A CN 201780072209A CN 109996901 A CN109996901 A CN 109996901A
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- layer
- overlay film
- oxidation overlay
- sliding component
- sliding
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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
- C10M103/06—Metal compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/12—Oxidising using elemental oxygen or ozone
- C23C8/14—Oxidising of ferrous surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
-
- 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
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
- C10M2201/0623—Oxides; Hydroxides; Carbonates or bicarbonates used as base material
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
-
- 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
- C10N2050/023—Multi-layer lubricant coatings
Abstract
Oxidation overlay film (170) of the invention is formed on substrate (175) surface for the sintered body being made of ferrous material, including first layer (171), the second layer (1729 and third layer (173).First layer (171) is located at outmost surface, includes at least crystallite.The second layer (172) is located at the downside of first layer (171), contains columnar structure.Third layer (173) is located at substrate (175) side across interface (174) with the second layer (172), contains columnar structure.First layer (171) includes compacted zone (171a).The oxidation overlay film (170) can play good abrasion performance.
Description
Technical field
In the surface shape of the substrate when the present invention relates to substrate being sintered body (the iron series sintered body) being made of ferrous material
At oxidation overlay film, be formed with the sliding component of the oxidation overlay film and with the equipment of the sliding component.
Background technique
Sliding part is combined mutually across sliding surface by multiple sliding components and is constituted.In general, if the kind of sliding
Class is that sliding sliding or rotational slide are formed with resistance to then at least one sliding component for constituting the sliding part in its sliding surface
Abrasivity overlay film.The abrasion performance overlay film typically it has been known that there is phosphate overlay film, gas nitriding overlay film or includes four oxidations
Three-iron (Fe3O4) single layer the oxidation overlay film of iron oxide etc..As ferroso-ferric oxide (Fe3O4) single layer oxidation overlay film, represent
Property be by blackening process (alias be also referred to as Ferromite processing.) method formed oxidation overlay film.
Such abrasion performance overlay film cladding constitutes the surface of the substrate of sliding component.Substrate is usually made of metal, the base
At least part on the surface of material is sliding surface.When being slided by sliding part, lubricating oil is supplied to sliding surface, therefore in cunning
In sliding component in dynamic, abrasion are prevented or inhibited using lubricating oil, and inhibit to be made because of the mutual contact of metal (substrate)
At resistance to sliding increase.As a result, in sliding part, can ensure smoothly to slide for a long time.
For example, disclosing the cause with the sliding part for using phosphate overlay film as abrasion performance overlay film in patent document 1
Refrigerant compressor.The coolant compressor takes the abrasion of the slippers such as its piston or crankshaft in order to prevent and in the sliding surface
Form the countermeasure of phosphate overlay film etc..By forming the phosphate overlay film, the bumps for the machined surface that machining is completed, energy are eliminated
The mutual initial stage adjustment of sliding component is enough set to become good.
For example, being rotated in the main shaft part and bearing portion of the crankshaft possessed by coolant compressor.Refrigerant
During the stopping of compressor, rotation speed 0m/s, the rotary motion since metal contact condition when starting, to be applied with big
Frictional resistance.In the coolant compressor, it is formed with phosphate overlay film in the main shaft part of crankshaft, which has just
Phase running-in ability.Therefore, by phosphate overlay film, abnormal wear caused by being contacted when starting as metal can be prevented.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 7-238885 bulletin
Summary of the invention
Technical problems to be solved by the inivention
In recent years, in order to realize the high efficiency of coolant compressor, the lower lubricating oil of viscosity or will sliding is used
Sliding length between portion is designed shorter.Therefore, with existing phosphate overlay film disclosed in patent document 1, it is possible to
Early stage wears away or wears away, and running-in effect is difficult to continue.There is the possibility that itself abrasion performance of phosphate overlay film reduces as a result,
Property.
In addition, during crankshaft rotation is turned around, the load applied to the main shaft part of crankshaft is sent out in coolant compressor
Life significantly changes.In addition, between crankshaft and bearing portion, the refrigerant gas for dissolving in lubricating oil has with the load change
When gasification and blister.Due to the blistering, rupture of oil film, the frequency that metal contact occurs increases.As a result, being formed in the master of crankshaft
The phosphate overlay film of axle portion is worn away quickly, and coefficient of friction may rise.
In addition, the fever of sliding part also becomes larger with the rising of barasion coefficient, the abnormal mill that gluing etc. can occur is worried
Consumption.In addition, as sliding part, other than the main shaft part of crankshaft and bearing portion, also there is piston and cylinder in coolant compressor
Chamber, and between these pistons and cylinder chamber, it is also possible to there is a phenomenon where as described above.
In addition, in patent document 1, the substrate for forming phosphate overlay film is limited to cast iron, but uses recently as substrate
The case where sintered body, is also increasing.Therefore, good abrasion performance is formed especially with regard to the substrate surface to iron series sintered body
Overlay film has no any disclosure in patent document 1.
The present invention is made to solve such technical problem, is arranged it is intended that providing as iron series
The surface of the substrate of sintered body simultaneously can play the oxidation overlay film of good abrasion performance, be formed with the sliding structure of the oxidation overlay film
Part and equipment with the sliding component.For solving the technical solution of technical problem
In order to solve the above-mentioned technical problem, oxidation overlay film of the present invention is constructed as follows: the oxidation overlay film and is formed
On the surface of the substrate for the sintered body being made of ferrous material, which includes: first layer, includes at least crystallite；Second
Layer, positioned at the downside of above-mentioned first layer, contains columnar structure；And third layer, it is located at substrate side across interface with the above-mentioned second layer,
Contain columnar structure.
According to the above configuration, due to having fine and close first layer in outmost surface, so can be to the sliding of sliding component
Face assigns good abrasion performance.Moreover, although the substrate of sliding component is iron series sintered body, due to first layer outmost surface
It is made of fine and close crystallite, so not needing sealing pores.Therefore, the raising of abrasion performance can not only be realized, additionally it is possible to real
The reduction of existing manufacturing cost.In addition, there is the second layer and third for being respectively provided with columnar structure between first layer and substrate
Layer.Therefore, the first layer of outmost surface can be made to become further good to the cementability of substrate.Therefore, conduct can be made
The stability of abrasion performance overlay film becomes more good.In turn, since substrate is iron series sintered body, is formed on its surface as good
The oxidation overlay film of good abrasion performance overlay film, so can be realized the lightweight of sliding component, even and casting so far
Sliding component made of iron can also be substituted for the sliding component of iron series sintering system.
Moreover, it relates to sliding component be constructed as follows in order to solve the above technical problems: above-mentioned composition
Oxidation overlay film be formed in the sintered body being made of ferrous material substrate sliding surface.
In addition, equipment of the present invention is constructed as follows in order to solve the above technical problems: including with above-mentioned
The sliding component of composition.
Above-mentioned purpose of the invention, other objects, features and advantages, on the basis of referring to attached drawing, by it is following preferably
The detailed description of embodiment can be appreciated that.
The effect of invention
In the present invention, by above composition, following effect can be played: being capable of providing setting and be sintered as iron series
The surface of the substrate of body and the oxidation overlay film of good abrasion performance can be played, the sliding component that is formed with the oxidation overlay film,
With the equipment with the sliding component.
Detailed description of the invention
Fig. 1 is the schematic sectional of an example of the composition for the coolant compressor for indicating that embodiments of the present invention are related to
Figure.
Fig. 2 is to indicate to carry out SIM to the oxidation overlay film for forming sliding part possessed by coolant compressor shown in Fig. 1
The SIM image of an example of the result of (sweep type ion microscope) observation.
Fig. 3 is the schematic diagram for indicating to have an example of the composition of the refrigerating plant of coolant compressor shown in Fig. 1.
Specific embodiment
Oxidation overlay film of the present invention is constructed as follows: the oxidation overlay film and is formed in the burning being made of ferrous material
The surface of the substrate of knot body, which includes: first layer, includes at least crystallite；The second layer, under above-mentioned first layer
Columnar structure is contained in side；And third layer, it is located at substrate side across interface with the above-mentioned second layer, contains columnar structure.
According to above-mentioned composition, due to having fine and close first layer in outmost surface, so can be to the sliding of sliding component
Face assigns good abrasion performance.Moreover, although the substrate of sliding component is iron series sintered body, due to first layer outmost surface
It is made of fine and close crystallite, so not needing sealing pores.Therefore, the raising of abrasion performance can not only be realized, additionally it is possible to real
The reduction of existing manufacturing cost.In addition, there is the second layer and third for being respectively provided with columnar structure between first layer and substrate
Layer.Therefore, the first layer of outmost surface can be made better to the cementability of substrate.Thereby, it is possible to make as abrasion performance
The stability of overlay film is better.Further, since substrate is iron series sintered body and is formed on its surface as good abrasion performance
Property overlay film oxidation overlay film, it is thus possible to the lightweight of sliding component is realized, even and so far to cast cunning made of iron
Dynamic component can also be substituted for the sliding component of iron series sintering system.
In the oxidation overlay film of above-mentioned composition, also can be set to following composition: above-mentioned first layer include compared to this first
The above-mentioned crystallite in other positions of layer more densely existing compacted zone.
In addition, above-mentioned first layer to above-mentioned third layer can be at least by three oxidations two in the oxidation overlay film of above-mentioned composition
Iron (Fe2O3) and ferroso-ferric oxide (Fe3O4) constitute.
In addition, can be constructed as follows in the oxidation overlay film of above-mentioned composition: in above-mentioned first layer accounting it is most at
It is divided into di-iron trioxide (Fe2O3), the most ingredient of accounting is ferroso-ferric oxide (Fe in the above-mentioned second layer3O4), above-mentioned
The most ingredient of accounting is ferroso-ferric oxide (Fe in three layers3O4)。
In addition, can be constructed as follows in the oxidation overlay film of above-mentioned composition: the crystallization particle diameter of above-mentioned first layer exists
In the range of 0.001~1 μm, and the crystallization particle diameter of the first layer is less than the crystallization particle diameter of the above-mentioned second layer.
In addition, can be constructed as follows in the oxidation overlay film of above-mentioned composition: the above-mentioned column contained by the above-mentioned second layer
Tissue is the crystalline structure of lengthwise of draw ratio in the range of 1~20.
In addition, can be constructed as follows in the oxidation overlay film of above-mentioned composition: the above-mentioned column contained by above-mentioned third layer
Tissue is the crystalline structure of lengthwise of draw ratio in the range of 1~15.
In addition, the oxidation overlay film of above-mentioned composition can be constructed as follows: film thickness is in the range of 1~5 μm.
Sliding component of the present invention is constructed as follows: the oxidation overlay film of above-mentioned composition is formed in be made of ferrous material
Sintered body substrate sliding surface.
In addition, above-mentioned sintered body can occupy the composition of 90 mass % or more in the sliding component of above-mentioned composition for iron.
In addition, in the sliding component of above-mentioned composition, above-mentioned sintered body can be to contain at least one of sulphur and molybdenum
It constitutes.
Equipment of the present invention is the composition of the sliding component with above-mentioned composition.
In the following, illustrating representative embodiment of the invention on one side referring to attached drawing on one side.In addition, below in whole figures
In identical reference marks is marked to identical or equivalent element, omit its repeat description.
(embodiment 1)
In present embodiment 1, as an example, enumerating oxidation overlay film of the present invention is formed in coolant compressor
The composition of sliding part is illustrated to the oxidation overlay film and using its sliding component and the equipment with the sliding component.
In addition, for convenience of explanation, will there is the equipment for the sliding component for being formed with oxidation overlay film of the present invention to be known as " using oxygen
Change the equipment of overlay film ".Therefore, the coolant compressor illustrated in present embodiment 1 is equivalent to the equipment using oxidation overlay film.
[composition of coolant compressor]
Firstly, the representative an example for the coolant compressor being related to referring to Figures 1 and 2 to present embodiment 1 has
Body explanation.Fig. 1 is the cross-sectional view for the coolant compressor 100 that present embodiment 1 is related to, and Fig. 2 is to indicate to be configured in refrigeration
The SIM image of an example of the result of SIM (sweep type ion microscope) observation of the oxidation overlay film of 100 sliding part of agent compressor.
As shown in Figure 1, being filled with the refrigerant comprising R134a in closed container 101 in coolant compressor 100
Gas 102, and have ester oil as the storage of lubricating oil 103 in bottom.In addition, being accommodated in closed container 101 including stator
104 and rotor 105 electric element 106 and the shuttle compressing member 107 that is driven.
Moreover, compressing member 107 is made of crankshaft 108, cylinder body 112, piston 132 etc..Illustrate compressing member 107 below
It constitutes.
Crankshaft 108 at least secures the main shaft part 109 of rotor 105 by indentation and is eccentrically formed relative to main shaft part 109
Eccentric shaft 110 is constituted.There is the oil feed pump 111 being connected to lubricating oil 103 in the lower end of crankshaft 108.
Crankshaft 108, using the sintered body (iron series sintered body) being made of ferrous material, is formed with as substrate 175 on surface
Aoxidize overlay film 170.Fig. 2 indicates representative an example of the oxidation overlay film 170 in present embodiment 1.Fig. 2 is to utilize SIM (scanning
Type ion microscope) an example for aoxidizing the result of section of overlay film 170 is observed, indicate the whole of the thickness direction of oxidation overlay film 170
A image.In addition, the sliding component illustrated in Fig. 2 is piston 132.
Oxidation overlay film 170 in present embodiment 1 is made of first layer 171, the second layer 172 and third layer 173, second
There are interfaces 174 between layer 172 and third layer 173.The specific composition of oxidation overlay film 170 is described below.
Cylinder body 112 is formed by cast iron, forms the cylinder chamber 113 of general cylindrical shape, and the axis with axis supports main shaft portion 109
Bearing portion 114.
In addition, forming flange surface 120 in rotor 105, the upper surface of bearing portion 114 becomes thrust face 122.In flange surface
Between 120 and the thrust face 122 of bearing portion 114, inserted with Thurst washer 124.By flange surface 120, thrust face 122 and thrust pad
Piece 124 constitutes thrust bearing 126.
Piston 132 keeps certain a certain amount of gap and swims embedded in cylinder chamber 113, is made of the material of iron series, with cylinder chamber 113
It is formed together discharge chambe 134.In addition, piston 132 is via piston pin 137 using as the connecting rod 138 and eccentric shaft of connection unit
110 connections.The end face of cylinder chamber 113 is sealed by valve plate 139.
Head 140 forms hyperbaric chamber.The opposite side of the cylinder chamber 113 of valve plate 139 is fixed on head 140.Suction tube (is not schemed
Show) it is fixed on closed container 101 and is connect with the low-pressure side of refrigerating cycle (not shown), refrigerant gas 102 is imported close
It closes in container 101, muffler 142 is attracted to be clamped by valve plate 139 and head 140.
For coolant compressor 100 as constructed as above, illustrate its movement below.
It is supplied to electric element 106 from the electric power of source power supply supply (not shown), makes the rotor of electric element 106
105 rotations.Rotor 105 rotates crankshaft 108, and the eccentric motion of eccentric shaft 110 is from the connecting rod 138 of connection unit via piston pin
137 drive piston 132.Piston 132 moves back and forth in cylinder chamber 113, will be directed by suction tube (not shown) closed
Refrigerant gas 102 in container 101 is compressed in discharge chambe 134 from attracting muffler 142 to suck.
Lubricating oil 103 supplies from oil feed pump 111 to each sliding part, moistens to sliding part with the rotation of crankshaft 108
It is sliding, and play the role of sealing between piston 132 and cylinder chamber 113.In addition, sliding part means multiple sliding components at that
The position that the state of this sliding face contact is slided.
Wherein, in coolant compressor 100 in recent years, in order to realize further high efficiency, following countermeasure is carried out,
That is, (1) uses the lower lubricating oil of viscosity as lubricating oil 103；Or (2) constitute the cunning of each sliding component of sliding part
Dynamic length (is set as the sliding length between sliding part.) countermeasure that is designed shorter etc..Therefore, sliding condition is to harsher
Direction is developed.In other words, there are the tendencies that the oil film between sliding part becomes thinner, or there are the oil film between sliding part is difficult
With the tendency of formation.
Moreover, in coolant compressor 100, the eccentric shaft 110 of crankshaft 108 relative to cylinder body 112 bearing portion 114,
And the main shaft part 109 of crankshaft 108 is eccentrically formed.Therefore, by the air pressure of compressed refrigerant gas 102, in crankshaft
Between 108 main shaft part 109, eccentric shaft 110 and connecting rod 138, apply the variable load with load change.Become with the load
Dynamic, between main shaft part 109 and bearing portion 114 etc., the refrigerant gas 102 dissolved in lubricating oil 103 gasifies repeatedly, therefore
It blisters in lubricating oil 103.
Due to such reason, in the sliding part between the main shaft part 109 and bearing portion 114 of crankshaft 108 etc., oil film is broken
It splits, the frequency that metal contact occurs each other for sliding surface increases.
However, to the sliding part of the coolant compressor 100, for example to the song indicated as an example in present embodiment 1
The sliding part of axis 108 applies the oxidation overlay film 170 comprising above-mentioned 3 layers of composition.Therefore, even if the frequency of rupture of oil film increases,
Also it can inhibit the abrasion with its sliding surface occurred for a long time.
In present embodiment 1, as sliding component, crankshaft 108 is instantiated, but be to cause in the equipment using oxidation overlay film
When refrigerant compressor 100, sliding component is not limited to the main shaft part 109 and bearing portion 114 of crankshaft 108.As above-mentioned composition
Sliding component in coolant compressor 100 both can be piston 132 and cylinder chamber 113, or connecting rod 138.For example, such as
Upper described, the sliding component illustrated in Fig. 2 is piston 132.In the present invention, on the surface of these sliding components as abrasion performance
Property overlay film be formed with oxidation overlay film 170.
[composition of oxidation overlay film]
Then, oxidation overlay film 170 of the present invention is more specifically illustrated.As described above, of the present invention
Oxidation overlay film 170 is made of first layer 171, the second layer 172 and third layer 173, is deposited between the second layer 172 and third layer 173
There is interface 174.
First layer 171 is located at the outmost surface of the substrate 175 as iron series sintered body, includes at least crystallite.Constitute first
The crystallization particle diameter of the crystallite of layer 171 is at least smaller than constituting the crystallization particle diameter of the crystallization of the second layer 172 (or third layer 173),
In the present invention, the crystallization particle diameter of first layer 171 is in the range of 0.001~1 μm.In addition, as shown in Fig. 2, first
Layer 171 includes the compacted zone 171a being made of finer and close crystallite.Other portions of the compacted zone 171a by crystallite than first layer 171
Position more densely exists to constitute.
The second layer 172 is located at the downside of first layer 171, containing as lengthwise (aoxidize overlay film 170 thickness direction on compared with
It is long) crystalline structure columnar structure.Third layer 173 and the second layer 172 are across interface and positioned at 175 side of substrate, with the second layer
The 172 same columnar structures containing the crystalline structure as lengthwise.In this way, the second layer 172 and third layer 173 contain column group
It knits, but they are clearly divided by interface 174 as shown in Figure 2.
The second layer 172 and third layer 173 are at least constituted by columnar organization, and respective columnar structure can be identical,
But the columnar structure (being known as " second layer columnar structure " for convenient) in the present invention, constituting the second layer 172 has than constituting
The big tendency of the draw ratio of the columnar structure (being known as " third layer columnar structure " for convenient) of third layer 173.
For example, the draw ratio of second layer columnar structure is 1~20 in the oxidation overlay film 170 that present embodiment 1 is related to
In range, the draw ratio of third layer columnar structure is in the range of 1~15.Certain second layer columnar structure and third layer column group
The draw ratio knitted is not limited within the scope of these respectively.
The whole thickness (film thickness) of oxidation overlay film 170 is not particularly limited, as long as in the range of 1~5 μm.Together
Compacted zone 171a contained by first layer 171, the thickness of the second layer 172 and third layer 173 and first layer 171, sample is present in
The thickness at the interface 174 between the second layer 172 and third layer 173 is not particularly limited.
In the example shown in Fig. 2, the thickness of first layer 171 is about 0.5 μm, and the thickness of the second layer 172 is about 2.0 μm,
The thickness of third layer 173 is about 0.6 μm, and the thickness at interface 174 is about 0.16 μm.In addition, first layer 171 includes compact crystallization
Layer, thickness is about 0.4 μm.Therefore, the whole thickness for aoxidizing overlay film 170 is about 3.26 μm.
The specific type of ingredient for constituting oxidation overlay film 170 is also not particularly limited, first layer 171 to third layer 173 to
Less by di-iron trioxide (Fe2O3) and ferroso-ferric oxide (Fe3O4) composition.More specifically, for example, being accounted in first layer 171
It is di-iron trioxide (Fe than most ingredients2O3), the most ingredient of accounting is ferroso-ferric oxide in the second layer 172
(Fe3O4), the most ingredient of accounting is ferroso-ferric oxide (Fe in third layer 1733O4).In addition, first layer 171~
Third layer 173 may include di-iron trioxide (Fe in (and interface 174)2O3) and ferroso-ferric oxide (Fe3O4) other than ingredient.
Aoxidizing overlay film 170 at least has first layer 171, the second layer 172 and third layer 173 and divides 172 and of the second layer
The interface 174 of third layer 173, it is possible to have the layer etc. other than these layers.In addition, as shown in Fig. 2, first layer 171 can
With comprising the compacted zone 171a for being formed in outmost surface side and the crystallite by more densely arranging is constituted, but can in first layer 171
Not necessarily to include compacted zone 171a.First layer 171 itself is made of the crystallite finer and close than other two layers, therefore, even if not
171a containing compacted zone, first layer 171 itself also become the finer and close layer of crystalline structure of the crystalline structure than other two layers.
The manufacturing method of oxidation overlay film 170 is suitble to be not particularly limited using the method for oxidation of well known ferrous material.Root
According to every items such as the type of the iron series sintered body as substrate 175, its surface state, the required physical property of oxidation overlay film 170
Part can be appropriately configured manufacturing condition etc..In the present invention, using well known to carbonic acid gas (carbon dioxide gas) etc.
Oxidizing gas and well known oxidation furnaces in the range of hundreds of DEG C, will be used as substrate in the range of such as 400~800 DEG C
175 iron series sintered body oxidation, thus, it is possible to form oxidation overlay film 170 on the surface of substrate 175.
To the iron series sintered body as substrate 175, the specific configuration is not particularly limited, to use ferrous material to pass through public affairs
The sintered body for the method manufacture known.The content of iron contained by iron series sintered body (substrate 175) is not particularly limited, in this reality
It applies in mode 1, it is preferable to use iron occupies the sintered body of 90 mass % or more.In addition, can wrap other than iron content in iron series sintered body
Various composition, but in the present invention, such as the composition containing at least one of sulphur (S) and molybdenum (Mo) can be enumerated.In addition, iron
It is that the substrate 175 of sintered body is typically free of silicon (Si).
Oxidation overlay film 170 of the present invention has fine and close first layer 171 in outmost surface.It therefore, can be to sliding
The sliding surface of component assigns good abrasion performance.Moreover, the substrate 175 of sliding component is iron series sintered body, if it is usual
Situation then needs to carry out sealing pores, but since the outmost surface of oxidation overlay film 170 is made of fine and close crystallite, so not needing
Sealing pores.Therefore, the raising of abrasion performance can not only be realized, additionally it is possible to realize the reduction of manufacturing cost.
In addition, existing between first layer 171 and iron series sintered body as substrate 175 and being respectively provided with columnar structure
The second layer 172 and third layer 173.Therefore, for being 2 layers of structure, institute by the layer of fixed (closely sealed) Yu Jicai 175 of first layer 171
First layer 171 can be made to become more good to the adaptation of substrate 175.Therefore, can make as abrasion performance overlay film
Stability is better.
In addition, in the past in the case where substrate 175 is ferrous material, using cast iron etc., but sliding structure of the present invention
The substrate 175 of part is iron series sintered body, has been formed on its surface oxidation overlay film 170.Therefore, compared with casting substrate 175 made of iron,
It can be realized the lightweight of sliding component.Moreover, even the cylinder iron sliding component of unmanageable shape, can also use iron
It is that sintered body realizes the shape.Therefore, even can also be substituted for iron series sintering so far to cast sliding component made of iron
The sliding component of system.
[variation]
In this way, oxidation overlay film 170 of the present invention is constructed as follows: to be formed in the substrate as iron series sintered body
175 surface, comprising: first layer 171 includes at least crystallite；The second layer 172 contains column positioned at the downside of the first layer 171
Shape tissue；With third layer 173, it is located at 175 side of substrate across interface 174 with the second layer 172, contains columnar structure.In addition, this
Inventing the sliding component being related to is that the surface (sliding surface) of the substrate 175 as iron series sintered body is provided with above-mentioned oxidation overlay film
170 composition.In addition, equipment of the present invention has sliding component of the present invention, in present embodiment 1, as
Equipment of the present invention instantiates coolant compressor 100.
Here, the specific composition of coolant compressor 100 is not limited to above-mentioned composition.For example, making in present embodiment 1
For refrigerant, R134a is used in present embodiment 1, but the type of refrigerant is without being limited thereto.Equally, as lubricating oil
103, ester oil is used in present embodiment 1, but the type of lubricating oil 103 is also not necessarily limited to this.As refrigerant and lubricating oil
103 combination, can it is preferable to use well known various combinations.
As the combination of particularly preferred refrigerant and lubricating oil 103, for example, following 3 examples can be enumerated.By making
With these combinations, the excellent efficient activity of coolant compressor 100 and excellent reliable can be equally realized with present embodiment 1
Property.
Firstly, can be enumerated as refrigerant, such as other HFC systems using R134a or other than it as combination 1
Refrigerant or the mixed cooling medium of HFC system use the alkylbenzene oil other than ester oil or ester oil, poly- second as lubricating oil 103
The example of alkene ether, polyalkylene glycol or their miscella.
In addition, can enumerate as combination 2 as refrigerant, using R600a, R290, R744 etc. natural refrigerant or
Its mixed cooling medium uses mineral oil, ester oil or alkylbenzene oil, polyvingl ether, polyalkylene two as lubricating oil 103
The example of the miscella of any one or they of alcohol.
In addition, can enumerate as refrigerant as combination 3, use the HFO system refrigerant of R1234yf etc. or its mixing
Refrigerant, as lubricating oil 103, using any one of ester oil or alkylbenzene oil, polyvingl ether, polyalkylene glycol,
Or the example of their miscella.
In these combinations, when especially for combination 2 or combination 3, by using the few refrigerant of greenhouse effects, additionally it is possible to real
The inhibition of existing global warming.In addition, combination 3 in, as lubricating oil 103 illustrate one group in can also include mineral oil.
In addition, coolant compressor 100 is reciprocating (reciprocating motion type) as described above in present embodiment 1, but this
The coolant compressor that invention is related to is not limited to reciprocating, naturally it is also possible to for as well known to rotary, vortex, oscillatory type etc.
Other compositions.As long as the coolant compressor that the present invention can be applicable in has the well known composition of sliding part and dump valve etc.,
It can obtain function and effect same as the function and effect illustrated in present embodiment 1.
In addition, coolant compressor 100 is driven using source power supply in present embodiment 1, but the present invention relates to
Coolant compressor it is without being limited thereto, for example, it is also possible to for multiple operating frequencies by the compressor of frequency conversion drive.Even if refrigeration
Agent compressor is such composition, passes through the cunning of the sliding part possessed by the coolant compressor (being made of sliding component)
Dynamic face forms the oxidation overlay film 170 of above-mentioned composition, raising and the object of itself abrasion performance can be also realized in the sliding part
Both aggressive inhibition.Even if when the low-speed running that fuel delivery tails off in each sliding part as a result, or electric element turn
Speed is increased when running at high speed, and also can be improved the reliability of coolant compressor.
(embodiment 2)
In present embodiment 2, referring to Fig. 3, to the coolant compressor 100 illustrated in above embodiment 1
An example of refrigerating plant, is specifically described.Fig. 3 schematically shows the refrigerant compression being related to above embodiment 1
The schematic configuration of the refrigerating plant of machine 100.Therefore, in present embodiment 2, only illustrate that constituting substantially for refrigerating plant is general
Slightly.
As shown in figure 3, the refrigerating plant that present embodiment 2 is related to includes main body 275, partition wall 278 and cryogen circuit
270 etc..Main body 275 is made of the cabinet of thermal insulation and door body etc., and cabinet is the open composition of its one side, and door body is to cabinet
The composition that open ports are opened and closed.The inside of main body 275 is divided into storage space 276 and the Machine Room of article by partition wall 278
277.Air blower (not shown) is provided in storage space 276.In addition, the inside of main body 275 can also be divided into storage
Space etc. other than space 276 and Machine Room 277.
Cryogen circuit 270 is the composition that will be cooled down in storage space 276, such as is constructed as follows: including above-mentioned implementation
Coolant compressor 100, radiator 272, decompressor 273 and the heat dump 274 illustrated in mode 1, they by piping with
Loop connecting.Heat dump 274 configures in storage space 276.The cooling of heat dump 274 is hot as shown in the dotted arrow of Fig. 3, by
Air blower (not shown) is stirred in a manner of recycling in storage space 276.It is cooled in storage space 276 as a result,.
Coolant compressor 100 possessed by cryogen circuit 270 has substrate if illustrated in above embodiment 1
175 sliding components being made of iron series sintered body are formed with above-mentioned oxidation overlay film 170 in the sliding surface of the sliding component.
In this way, the refrigerating plant that present embodiment 2 is related to is equipped with the coolant compressor that above embodiment 1 is related to
100.The excellent wear resistance of sliding part possessed by coolant compressor 100 is also excellent to the adaptation of sliding surface.Therefore,
Coolant compressor 100 can reduce the sliding loss of sliding part, can be realized excellent reliability and excellent efficiency.It is tied
Fruit, the refrigerating plant that present embodiment 2 is related to can reduce consumption electric power, therefore can be realized energy-saving, and can also make
Reliability improves.
In addition, as described above, as the equipment for aoxidizing overlay film is used, instantiating refrigerant pressure in above embodiment 1
Contracting machine, as the equipment for aoxidizing overlay film is used, instantiates the refrigerating plant with coolant compressor in present embodiment 2.
However, the equipment for the use oxidation overlay film that the present invention can be applicable in is not limited to coolant compressor or the refrigerating plant with it.
As long as oxidation overlay film of the present invention is used for executing the various cunnings such as translation gliding (sliding toward double action) or rotational slide
Which kind of equipment is the equipment of dynamic sliding component then can be applicable in.
Specifically, the various movement devices such as various pumps, motor, engine, expanding machine can be enumerated；Ice
The various refrigerating plants of case, reach in freezer, air-conditioning etc.；The household appliance of washing machine, dust catcher etc.；Centrifugal separator；Built-in equipment
Deng equipment machine etc..
It, can be in the range shown in claimed range additionally, this invention is not limited to the record of above embodiment
It makes various changes, by the disclosed appropriately combined obtained reality of technological means respectively in different embodiment or multiple variations
The mode of applying is also included in technical scope of the invention.
In addition, those skilled in the art can be appreciated that a variety of improvement or other embodiment of the invention from above description.
Therefore, above description should be the reality provided for the purpose of introduction those skilled in the art only as illustrating to explain
Row most preferred embodiment of the invention.Spirit of the invention is not departed from, its structure and/or function can be substantially changed
Details.
Industrial availability
To sum up, oxidation overlay film of the present invention can play high wear-resisting for a long time under for example harsh environment
Consumption, therefore can be improved the reliability of sliding part.Therefore, the present invention can be widely applied for various sliding components or various
Component or equipment with sliding part.
Symbol description
100: coolant compressor (uses the equipment of oxidation overlay film)；108: crankshaft (sliding component)；113: (the sliding of cylinder chamber
Component)；132: piston (sliding component)；138: connecting rod (sliding component)；170: oxidation overlay film；171: first layer；171a: fine and close
Layer；172: the second layer；173: third layer；174: interface；175: substrate；270: cryogen circuit；272: radiator；273: decompression
Device；274: heat dump.
Claims (12)
1. a kind of oxidation overlay film, it is characterised in that:
The oxidation overlay film is formed in the surface of the substrate for the sintered body being made of ferrous material,
The oxidation overlay film includes:
First layer includes at least crystallite；
The second layer contains columnar structure positioned at the downside of the first layer；With
Third layer is located at substrate side across interface with the second layer, contains columnar structure.
2. oxidation overlay film as described in claim 1, it is characterised in that:
The first layer includes the crystallite existing compacted zone more densely than other positions of the first layer.
3. oxidation overlay film as claimed in claim 1 or 2, it is characterised in that:
The first layer is to the third layer at least by di-iron trioxide (Fe2O3) and ferroso-ferric oxide (Fe3O4) constitute.
4. oxidation overlay film as claimed in claim 3, it is characterised in that:
The most ingredient of accounting is di-iron trioxide (Fe in the first layer2O3),
The most ingredient of accounting is ferroso-ferric oxide (Fe in the second layer3O4),
The most ingredient of accounting is ferroso-ferric oxide (Fe in the third layer3O4)。
5. oxidation overlay film as described in any one of claims 1 to 4, it is characterised in that:
The crystallization particle diameter of the first layer is in the range of 0.001~1 μm, and the crystallization particle diameter of the first layer is less than described the
Two layers of crystallization particle diameter.
6. such as oxidation overlay film according to any one of claims 1 to 5, it is characterised in that:
The columnar structure contained by the second layer is the crystalline structure of lengthwise of draw ratio in the range of 1~20.
7. such as oxidation overlay film according to any one of claims 1 to 6, it is characterised in that:
The columnar structure contained by the third layer is the crystalline structure of lengthwise of draw ratio in the range of 1~15.
8. such as oxidation overlay film according to any one of claims 1 to 7, it is characterised in that:
Film thickness is in the range of 1~5 μm.
9. a kind of sliding component, it is characterised in that:
Oxidation overlay film according to any one of claims 1 to 8 is formed in the cunning of the substrate for the sintered body being made of ferrous material
Dynamic face.
10. sliding component as claimed in claim 9, it is characterised in that:
Iron occupies 90 mass % or more in the sintered body.
11. sliding component as claimed in claim 10, it is characterised in that:
The sintered body contains at least one of sulphur and molybdenum.
12. a kind of equipment, it is characterised in that:
With sliding component described in any one of claim 9~11.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016230053 | 2016-11-28 | ||
| JP2016-230053 | 2016-11-28 | ||
| PCT/JP2017/042353 WO2018097280A1 (en) | 2016-11-28 | 2017-11-27 | Oxide coating film formed on substrate surface of iron-based sintered body, sliding member provided with said oxide coating film, and device provided with said sliding member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109996901A true CN109996901A (en) | 2019-07-09 |
| CN109996901B CN109996901B (en) | 2022-11-15 |
Family
ID=62195915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780072209.0A Active CN109996901B (en) | 2016-11-28 | 2017-11-27 | Oxide film, sliding member having the same formed thereon, and apparatus having the sliding member |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200270541A1 (en) |
| EP (1) | EP3546613A1 (en) |
| JP (1) | JP7065424B2 (en) |
| CN (1) | CN109996901B (en) |
| WO (1) | WO2018097280A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020186444A (en) * | 2019-05-15 | 2020-11-19 | パナソニック株式会社 | Oxide layer formed on surface of base material formed of iron based sintered body, sliding member having the same and device including sliding member |
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| JPS6073082A (en) * | 1983-09-29 | 1985-04-25 | Toshiba Corp | Rotary compressor |
| JP2009002288A (en) * | 2007-06-25 | 2009-01-08 | Panasonic Corp | Sliding member of compressor |
| JP2011122222A (en) * | 2009-12-14 | 2011-06-23 | Kyocera Corp | Surface-coating member |
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| CN108026913A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | Cold medium compressor and the refrigerating plant using the cold medium compressor |
| CN108026912A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | Cold medium compressor and use its refrigerating plant |
| CN108026626A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | It is formed at oxidation overlay film, the slide unit formed with the oxidation overlay film and the equipment for possessing the slide unit of iron system base material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3473776B2 (en) | 1994-02-28 | 2003-12-08 | 東芝キヤリア株式会社 | Hermetic compressor |
| CN109964034B (en) * | 2016-11-18 | 2021-05-07 | 松下知识产权经营株式会社 | Refrigerant compressor and refrigerating device with same |
| WO2018092854A1 (en) * | 2016-11-21 | 2018-05-24 | パナソニックＩｐマネジメント株式会社 | Refrigerant compressor and refrigeration device with same |
-
2017
- 2017-11-27 JP JP2018552992A patent/JP7065424B2/en active Active
- 2017-11-27 EP EP17873486.9A patent/EP3546613A1/en not_active Withdrawn
- 2017-11-27 US US16/462,089 patent/US20200270541A1/en not_active Abandoned
- 2017-11-27 WO PCT/JP2017/042353 patent/WO2018097280A1/en active Application Filing
- 2017-11-27 CN CN201780072209.0A patent/CN109996901B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073082A (en) * | 1983-09-29 | 1985-04-25 | Toshiba Corp | Rotary compressor |
| JP2009002288A (en) * | 2007-06-25 | 2009-01-08 | Panasonic Corp | Sliding member of compressor |
| JP2011122222A (en) * | 2009-12-14 | 2011-06-23 | Kyocera Corp | Surface-coating member |
| CN103228383A (en) * | 2010-11-26 | 2013-07-31 | 住友电工硬质合金株式会社 | Surface coated sintered body |
| CN104066988A (en) * | 2012-02-20 | 2014-09-24 | 松下电器产业株式会社 | Sliding member and refrigerant compressor using same, refrigerator, and air conditioner |
| CN108026913A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | Cold medium compressor and the refrigerating plant using the cold medium compressor |
| CN108026912A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | Cold medium compressor and use its refrigerating plant |
| CN108026626A (en) * | 2015-09-07 | 2018-05-11 | 松下知识产权经营株式会社 | It is formed at oxidation overlay film, the slide unit formed with the oxidation overlay film and the equipment for possessing the slide unit of iron system base material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018097280A1 (en) | 2019-10-17 |
| WO2018097280A1 (en) | 2018-05-31 |
| EP3546613A4 (en) | 2019-10-02 |
| CN109996901B (en) | 2022-11-15 |
| US20200270541A1 (en) | 2020-08-27 |
| JP7065424B2 (en) | 2022-05-12 |
| EP3546613A1 (en) | 2019-10-02 |
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