WO2020225877A1 - Composant de volute, son procédé de fabrication et compresseur à volute - Google Patents

Composant de volute, son procédé de fabrication et compresseur à volute Download PDF

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Publication number
WO2020225877A1
WO2020225877A1 PCT/JP2019/018423 JP2019018423W WO2020225877A1 WO 2020225877 A1 WO2020225877 A1 WO 2020225877A1 JP 2019018423 W JP2019018423 W JP 2019018423W WO 2020225877 A1 WO2020225877 A1 WO 2020225877A1
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Prior art keywords
scroll
zinc phosphate
layer
particles
solid lubricant
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PCT/JP2019/018423
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English (en)
Japanese (ja)
Inventor
元基 正木
将吾 諸江
貴也 木本
慎一郎 井戸
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三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/018423 priority Critical patent/WO2020225877A1/fr
Priority to JP2019547324A priority patent/JP6633264B1/ja
Priority to CN201980096066.6A priority patent/CN113785126B/zh
Publication of WO2020225877A1 publication Critical patent/WO2020225877A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Definitions

  • the present invention relates to scroll parts used in scroll compressors such as air conditioners, manufacturing methods thereof, and scroll compressors.
  • the scroll compressor which is one of the scroll fluid machines, has advantages such as high efficiency, high reliability, and quietness compared to other types of compressors. Therefore, the scroll compressor is widely used in various fields such as refrigeration equipment and air conditioning equipment.
  • Such a scroll compressor includes a fixed scroll fixed to a frame and a swing scroll arranged to face the fixed scroll.
  • the scroll compressor is a method of compressing the refrigerant gas by the rotational movement of the scroll, and it is possible to increase the output by increasing the rotation speed of the scroll.
  • the centrifugal force applied to the scroll increases, causing problems such as mechanical deformation. Therefore, as a measure to reduce the weight of scrolls, studies are being actively conducted to change the material from cast iron to an aluminum alloy having a lighter specific gravity.
  • the aluminum alloy has a low melting point and a low surface hardness, seizure of the sliding surface occurs during the operation. Therefore, in the scroll made of aluminum alloy, improvement of slidability (prevention of seizure) is an issue.
  • Patent Document 1 in a sliding member in which a sliding layer containing a resin powder and a solid lubricant powder is formed on at least one surface of an aluminum alloy base material, a solid lubricant on the base material side of the sliding layer is formed. It is disclosed that seizure resistance and abrasion resistance are improved by lowering the volume ratio of the powder to that of the anti-base material side.
  • the present invention has been made to solve the above-mentioned problems, and is a scroll component in which a layer having excellent slidability and adhesion is formed on a sliding surface of a scroll made of an aluminum alloy, and a method for manufacturing the scroll component.
  • the purpose is to provide.
  • Another object of the present invention is to provide a scroll compressor capable of preventing seizure of the sliding surface of a scroll made of an aluminum alloy during operation of the compressor.
  • Aluminum alloy has a lower melting point and lower hardness than iron-based metals used for general sliding parts, so the sliding surface tends to seize due to frictional heat during sliding. Therefore, in order to prevent seizure, it is necessary to form a layer on the surface of the aluminum alloy using a material having high lubricity. Further, a large amount of stress is applied to the layer formed on the surface of the aluminum alloy when the members slide with each other. Therefore, the interface between the layer formed by using a material having high lubricity and the aluminum alloy is required to have strong adhesion to the extent that peeling does not occur during sliding.
  • the present inventors (1) formed a zinc phosphate layer containing zinc phosphate particles on the surface of the aluminum alloy, and formed the zinc phosphate layer on the zinc phosphate layer.
  • the slidability of the surface of the aluminum alloy is improved by forming the solid lubricating layer containing the binder and the scaly solid lubricant particles, and (2) at the interface between the zinc phosphate layer and the solid lubricating layer.
  • the present invention is a scroll component including a fixed scroll made of an aluminum alloy and a swinging scroll made of an aluminum alloy, and at least one of the fixed scroll and the swinging scroll is formed on the sliding surface thereof.
  • a zinc phosphate layer containing zinc phosphate particles and a solid lubricating layer formed on the surface of the zinc phosphate layer and containing a binder and scaly solid lubricant particles are provided, and the zinc phosphate layer and the solid lubricating layer are provided.
  • the scroll component is characterized in that the zinc phosphate particles and the scaly solid lubricant particles are interlaced with each other at the interface with the zinc phosphate particles.
  • the closed container the compression mechanism unit that compresses the fluid housed in the closed container and flowing into the closed container, the electric motor that generates the rotational force, and the rotational force generated by the electric motor are described.
  • a scroll compressor including a drive shaft that transmits to a compression mechanism unit, wherein the compression mechanism unit includes the scroll component.
  • the present invention is a method for manufacturing a scroll component including a fixed scroll made of an aluminum alloy and a swinging scroll made of an aluminum alloy, wherein at least one sliding surface of the fixed scroll and the swinging scroll is made of phosphorus.
  • a scroll component in which a layer having excellent slidability and adhesion is formed on a sliding surface of a scroll made of an aluminum alloy. Further, according to the present invention, it is possible to provide a scroll compressor capable of preventing seizure of the sliding surface of a scroll made of an aluminum alloy during operation of the compressor. Further, according to the present invention, it is possible to provide a method for producing a scroll component in which a layer having excellent slidability and adhesion is formed on a sliding surface of a scroll made of an aluminum alloy with high productivity.
  • FIG. 5 is a schematic cross-sectional view of a swing scroll and a fixed scroll constituting the scroll component according to the first embodiment. It is sectional drawing of the sliding surface of the scroll part which concerns on Embodiment 1.
  • FIG. FIG. 5 is a schematic cross-sectional view of the vicinity of the interface between the zinc phosphate layer and the solid lubricating layer formed on the sliding surface of the scroll component according to the first embodiment.
  • FIG. 5 is a schematic cross-sectional view of the vicinity of the interface between the zinc phosphate layer and the solid lubricating layer formed on the sliding surface of the scroll component according to the first embodiment.
  • FIG. 5 is a schematic cross-sectional view of the vicinity of the interface between the zinc phosphate layer and the solid lubricating layer formed on the sliding surface of the scroll component according to the first embodiment.
  • FIG. 5 is a schematic cross-sectional view showing a state in which a zinc phosphate layer and a solid lubricating layer are formed on the sliding surfaces of both the fixed scroll and the rocking scroll constituting the scroll component according to the first embodiment.
  • FIG. 5 is a schematic cross-sectional view showing a state in which a zinc phosphate layer and a solid lubricating layer are formed on a sliding surface of one of the scrolls constituting the scroll component according to the first embodiment. It is sectional drawing of the scroll compressor which concerns on Embodiment 2.
  • FIG. 1 is a schematic cross-sectional view of a swing scroll and a fixed scroll that constitute the scroll component according to the first embodiment.
  • the scroll component 1 includes a swing scroll 2 and a fixed scroll 3.
  • the scroll component 1 has a sliding surface 1a on which the swing scroll 2 and the fixed scroll 3 rub against each other.
  • FIG. 2 is a schematic cross-sectional view of the sliding surface of the scroll component according to the first embodiment.
  • FIG. 3 is a schematic cross-sectional view of the vicinity of the interface between the zinc phosphate layer and the solid lubricating layer formed on the sliding surface of the scroll component according to the first embodiment (hereinafter, the zinc phosphate layer and the solid lubricating layer are shown. It may also be called a coating layer).
  • a zinc phosphate layer 6 is formed on the surface of the aluminum alloy 5 constituting the scroll, and a solid containing a binder and scaly solid lubricant particles on the surface of the zinc phosphate layer 6.
  • the lubricating layer 7 is formed.
  • the solid lubricating layer 7 having excellent slidability on the sliding surface 1a in this way, the slidability of the surface of the aluminum alloy 5 can be improved.
  • the zinc phosphate particles 10 and the scaly solid lubricant particles 11 are present in an interlaced manner, so that the anchor effect is obtained. Can be generated, and the adhesion of the coating layer to the aluminum alloy 5 can be improved.
  • the zinc phosphate layer 6 in the scroll component 1 of the present embodiment is configured by the zinc phosphate particles 10 being fixed to each other.
  • the shape of the zinc phosphate particles 10 is not particularly limited, but is preferably scaly.
  • the zinc phosphate particles 10 and the scaly solid lubricant particles 11 are less likely to intersect at the interface between the zinc phosphate layer 6 and the solid lubricant layer 7, and the anchor effect is obtained. May not be obtained sufficiently. Therefore, from the viewpoint of improving the adhesion between the zinc phosphate layer 6 and the solid lubricating layer 7, it is preferable that the zinc phosphate particles 10 protrude from the surface of the zinc phosphate layer 6.
  • the zinc phosphate layer 6 can obtain the same adhesion regardless of whether it is dense or porous.
  • the major axis of the zinc phosphate particles 10 constituting the zinc phosphate layer 6 is not particularly limited, but is preferably 2 ⁇ m or more and 15 ⁇ m or less, and more preferably 3 ⁇ m or more and 10 ⁇ m or less. When the major axis of the zinc phosphate particles 10 is less than 2 ⁇ m, the protrusion of the zinc phosphate particles 10 from the surface of the zinc phosphate layer 6 is small, and it becomes difficult to obtain the above-mentioned anchor effect.
  • the thickness of the zinc phosphate layer 6 is not particularly limited, but is preferably 2 ⁇ m or more and 10 ⁇ m or less, and more preferably 3 ⁇ m or more and 6 ⁇ m or less. If the thickness of the zinc phosphate layer 6 is less than 2 ⁇ m, it becomes difficult to cover the entire surface of the aluminum alloy 5 when the thickness varies, and the surface of the aluminum alloy 5 may be exposed. .. On the other hand, if the thickness of the zinc phosphate layer 6 exceeds 10 ⁇ m, peeling may occur due to the shearing force applied to the inside of the zinc phosphate layer 6.
  • the solid lubricant layer 7 in the scroll component 1 of the present embodiment contains scaly solid lubricant particles 11 and a binder 12 as main components.
  • the scaly solid lubricant particles 11 are dispersed in the binder 12 and fixed by the binder 12.
  • the scaly solid lubricant particles 11 are preferably contained in an amount of 20% by volume or more and 70% by volume or less, and more preferably 30% by volume or more and 60% by volume or less with respect to the solid lubricating layer 7. If the amount of the scaly solid lubricant particles 11 is less than 20% by volume, the amount of the scaly solid lubricant particles 11 exposed on the surface of the solid lubricating layer 7 is small, so that sufficient slidability cannot be obtained.
  • the thickness of the solid lubricating layer 7 is not particularly limited, but is preferably 5 ⁇ m or more and 60 ⁇ m or less, and more preferably 10 ⁇ m or more and 40 ⁇ m or less. If the thickness of the solid lubricating layer 7 is less than 5 ⁇ m, it becomes difficult to cover the entire surface of the zinc phosphate layer 6 when the thickness varies, and the surface of the zinc phosphate layer 6 is exposed. In some cases.
  • the scaly solid lubricant particles 11 have a layered structure in which covalently bonded two-dimensional crystal layers are stacked with each other by van der Waals bonds. The scaly solid lubricant particles 11 exhibit excellent lubricity by peeling off the two-dimensional crystal layer during sliding.
  • the zinc phosphate particles 10 and the scaly solid lubricant particles 11 are interlaced with each other, so that the zinc phosphate layer 6 and the solid lubricating layer 7 are present. Not only the adhesion to the aluminum alloy 5 is improved, but also the adhesion of the coating layer to the aluminum alloy 5 is improved.
  • the state in which the zinc phosphate particles 10 and the scaly solid lubricant particles 11 are interlaced means that the cross section of the coating layer is magnified 7000 times with a scanning electron microscope (SEM) and taken.
  • the anchor effect becomes easier to work and the adhesion of the coating layer to the aluminum alloy 5 is further improved. Can be made to.
  • the ratio (d1 / d2) of the major axis (d1) of the zinc phosphate particles 10 to the major axis (d2) of the scaly solid lubricant particles 11 is 0.5 or more and 2 or less (0.5 ⁇ d1). / D2 ⁇ 2) is preferable because the adhesion of the coating layer to the aluminum alloy 5 is further improved.
  • the major axis (d1) of the zinc phosphate particles 10 and the major axis (d2) of the scaly solid lubricant particles 11 are several photographs in which the cross section of the coating film is magnified several thousand times by an electron microscope (SEM). After taking a picture, 30 zinc phosphate particles 10 and scaly solid lubricant particles 11 can be arbitrarily extracted, their major axes are actually measured, and the measured values are arithmetically averaged. ..
  • the solid lubricating layer 7 in the scroll component of the present embodiment can obtain excellent slidability and adhesion even if it has a one-layer structure, but as shown in FIG. 4, phosphoric acid
  • a two-layer structure consisting of a first solid lubrication layer 7a formed on the surface of the zinc layer 6 and a second solid lubrication layer 7b formed on the surface of the first solid lubrication layer 7a.
  • the sex can be further improved.
  • the c-plane orientation of the scaly solid lubricant particles 11 in the first solid lubricating layer 7a is preferably smaller than the c-plane orientation of the scaly solid lubricant particles 11 in the second solid lubricating layer 7b. Further, the c-plane orientation of the scaly solid lubricant particles 11 in the first solid lubricant layer 7a is 50% or less, and the c-plane orientation of the scaly solid lubricant particles 11 in the second solid lubricant layer 7b is 70%.
  • the c-plane orientation of the scaly solid lubricant particles 11 in the first solid lubricating layer 7a is 35% or more and 50% or less, and the scaly solid lubricant in the second solid lubricating layer 7b. It is even more preferable that the c-plane orientation of the particles 11 is 70% or more and 85% or less.
  • the abundance ratio of the scaly solid lubricant particles 11 in a state parallel to the thickness direction of the first solid lubricating layer 7a increases, so that the zinc phosphate particles 10 and the scaly solid It becomes easy for the lubricant particles 11 to intersect with each other, and the adhesion is further improved by the anchor effect.
  • the c-plane orientation of the scaly solid lubricant particles 11 can be determined by measuring the X-ray diffraction patterns of the first solid lubricating layer 7a and the second solid lubricating layer 7b.
  • each peak of the X-ray diffraction pattern obtained by irradiating X-rays in the thickness direction of the first solid lubricating layer 7a and the second solid lubricating layer 7b is indexed by the Miller index (hkl) of the crystal structure.
  • the ratio of the sum of the peak intensities ( ⁇ I (00l)) of the plane (c-plane) perpendicular to the c-axis to the sum of all the peak intensities ( ⁇ (hkl)) may be calculated according to the following equation 1.
  • the thicknesses of the first solid lubrication layer 7a and the second solid lubrication layer 7b are not particularly limited, but the thickness of the first solid lubrication layer 7a and the thickness of the second solid lubrication layer 7b are totaled to form the above-mentioned solid lubrication layer.
  • the thickness may be within the range of 7. Further, from the viewpoint of improving the seizure prevention effect of the sliding surface, it is preferable that the thickness of the second solid lubricating layer 7b is thicker than the thickness of the first solid lubricating layer 7a.
  • the scaly solid lubricant particles 11 are preferably particles having a scaly shape and a hexagonal crystal structure from the viewpoint of improving slidability. By using such scaly solid lubricant particles 11, the two-dimensional crystal layer of the scaly solid lubricant particles 11 is peeled off during sliding, and excellent slidability can be obtained.
  • the scaly solid lubricant particles 11 are not particularly limited, and examples thereof include molybdenum disulfide (MoS 2 ), tungsten disulfide (WS 2 ), hexagonal boron nitride (h-BN), and graphite. These may be used alone or in combination of two or more.
  • solid lubricant particles such as polytetrafluoroethylene (PTFE) particles, calcium fluoride (CaF 2 ) particles, and silica (SiO 2 ) particles may be used in combination with the scaly solid lubricant particles 11. ..
  • PTFE polytetrafluoroethylene
  • CaF 2 calcium fluoride
  • SiO 2 silica
  • the binder 12 may have a function of dispersing and immobilizing the scaly solid lubricant particles 11, and is appropriately selected from an organic binder and an inorganic binder.
  • One index when selecting the binder 12 is heat resistance. Specifically, the binder 12 having heat resistance that can withstand the temperature may be appropriately selected according to the temperature at which the scroll component is used. Further, as an index from another viewpoint, the load applied to the solid lubricating layer 7 at the time of sliding can be mentioned. Specifically, when the load applied to the solid lubricating layer 7 during sliding is low, the binder 12 having low hardness may be selected. On the other hand, when the load applied to the solid lubricating layer 7 during sliding is high, the binder 12 having high hardness may be selected. In this way, by appropriately selecting the binder 12 according to the load applied to the solid lubricating layer 7 during sliding, the lubricating effect of the scaly solid lubricant particles 11 can be more easily obtained.
  • the organic binder is not particularly limited, and examples thereof include thermosetting resins such as epoxy resin, unsaturated polyester resin, phenol resin, melamine resin, silicone resin, polyamide-imide resin, and polyimide resin.
  • thermosetting resins such as epoxy resin, unsaturated polyester resin, phenol resin, melamine resin, silicone resin, polyamide-imide resin, and polyimide resin.
  • epoxy resin is preferable because it has excellent adhesiveness.
  • Specific examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, orthocresol novolac type epoxy resin, phenol novolac type epoxy resin, alicyclic epoxy resin, aliphatic type epoxy resin, and glycidyl-aminophenol type. Epoxy resin and the like can be mentioned. These organic binders may be used alone or in combination of two or more.
  • the thermosetting resin When an epoxy resin is used as the thermosetting resin, it is preferable to use a curing agent together.
  • the curing agent include alicyclic acid anhydrides such as methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride and hymic anhydride; aliphatic acid anhydrides such as dodecenylphthalic anhydride; phthalic anhydride and anhydride.
  • Aromatic acid anhydrides such as trimellitic acid; organic dihydrazides such as dicyandiamide and adipate dihydrazide; tris (dimethylaminomethyl) phenol; dimethylbenzylamine; 1,8-diazabicyclo (5,4,0) undecene and derivatives thereof; Examples thereof include imidazoles such as 2-methylimidazole, 2-ethyl-4-methylimidazole, and 2-phenylimidazole. These curing agents may be used alone or in combination of two or more.
  • the blending amount of the curing agent needs to be appropriately set according to the type of the thermosetting resin and the curing agent, but generally 0.1 part by mass or more and 200 parts by mass with respect to 100 parts by mass of the thermosetting resin. It is less than a part.
  • the solid lubricant layer 7 in the scroll component of the present embodiment preferably contains a coupling agent from the viewpoint of improving the adhesive force at the interface between the scaly solid lubricant particles 11 and the cured product of the thermosetting resin.
  • a coupling agent include ⁇ -glycidoxypropyltrimethoxysilane, N- ⁇ (aminoethyl) ⁇ -aminopropyltriethoxysilane, N-phenyl- ⁇ -aminopropyltrimethoxysilane, and ⁇ -mercaptopropyl. Examples thereof include trimethoxysilane.
  • These coupling agents may be used alone or in combination of two or more.
  • the blending amount of the coupling agent needs to be appropriately set according to the scaly solid lubricant particles 11, the thermosetting resin, the type of the coupling agent, etc., but is generally 100 parts by mass of the thermosetting resin. On the other hand, it is 0.01 part by mass or more and 1 part by mass or less.
  • the inorganic binder is preferably a liquid binder that has good compatibility with the scaly solid lubricant particles 11 and is capable of uniform dispersion.
  • Inorganic binders often have a higher curing temperature than organic binders.
  • it has a curing temperature of preferably 250 ° C. or lower, more preferably 200 ° C. or lower, and even more preferably 180 ° C. or lower. It is preferable to select an inorganic binder.
  • the solid lubricating layer 7 can be formed without causing a decrease in the strength of the aluminum alloy 5 and a thermal deterioration of the zinc phosphate layer 6.
  • the inorganic binder include, but are not limited to, solgel glass, organic-inorganic hybrid glass, water glass, one-component inorganic adhesive, two-component inorganic adhesive and the like. These inorganic binders may be used alone or in combination of two or more.
  • the thickness of the coating layer formed on the sliding surface 1a of the scroll component 1 is preferably uniform from the viewpoint of improving the sealing property of the refrigerant gas. If the thickness of the coating layer on the convex portion and the thickness of the coating layer on the concave portion of the sliding surface 1a of the scroll component 1 are not uniform, the sliding surface 1a will be formed when the swinging scroll 2 and the fixed scroll 3 are combined. A gap is created, and the sealing property of the refrigerant gas deteriorates. Therefore, the difference between the thickness of the coating layer on the convex portion and the thickness of the coating layer on the concave portion of the sliding surface 1a of the scroll component 1 is preferably 5 ⁇ m or less, and more preferably 3 ⁇ m or less. When the difference in thickness is 5 ⁇ m or less, even if a gap is formed in the sliding surface 1a, the oil film of the lubricating oil replaces the packing, and deterioration of the sealing property can be suppressed.
  • the 0.2% proof stress in the tensile test of the scroll component 1 of the present embodiment is preferably 150 MPa or more, more preferably 200 MPa or more, and even more preferably 300 MPa or more.
  • the 0.2% proof stress in the tensile test of the scroll component 1 is 150 MPa or more, distortion does not occur during sliding, and the scroll member is highly reliable as a sliding member.
  • the 0.2% proof stress in the tensile test uses the value evaluated by the method described in JIS Z2411.
  • the scroll component 1 of the present embodiment does not adversely affect the slidability and the adhesion of the coating layer even if the edge portion of the sliding surface 1a is not processed.
  • the coating layer is subjected to curved surface (R) processing or taper processing.
  • curved surface (R) processing or taper processing By applying curved surface (R) processing or taper processing to the edge portion of the sliding surface 1a, burrs on the edge portion generated during the manufacture of scroll parts are removed, the smoothness of the coating layer is improved, and the sealing property of the refrigerant gas is improved. Is improved.
  • the curved surface (R) processing is preferably R0.5 mm or more and R3 mm or less.
  • the taper processing is preferably C0.5 mm or more and C3 mm or less.
  • R means the radius of the curved surface
  • C means the distance from the edge portion. If R and C are less than 0.5 mm, the removal of burrs on the edge portion may not be sufficient, and the smoothness of the coating layer may be impaired. On the other hand, if R and C exceed 3 mm, the area of the sliding surface 1a becomes small and the pressure applied during sliding increases.
  • FIG. 5 and 6 are enlarged views of the sliding surface 1a of the scroll component 1 of the present embodiment.
  • a zinc phosphate layer 6 and a solid lubricating layer 7 are formed on the sliding surfaces 1a of the swing scroll 2 and the fixed scroll 3.
  • the zinc phosphate layer 6 and the solid lubrication layer 7 are formed only on one of the sliding surfaces 1a of the rocking scroll 2 and the fixed scroll 3.
  • a zinc phosphate layer 6 and a solid lubricating layer 7 are formed on the sliding surfaces 1a of both scrolls constituting the scroll component 1, or zinc phosphate is formed on the sliding surface 1a of one of the scrolls constituting the scroll component 1.
  • the layer 6 and the solid lubricating layer 7 may be appropriately selected according to the slidability required for the scroll component 1. For example, when it is necessary to increase the rotation speed of the scroll of the compressor, high slidability is required. Therefore, the zinc phosphate layer 6 and the solid lubrication layer 7 are formed on the sliding surfaces 1a of both scrolls. It is preferable to form.
  • the aluminum alloy 5 in the scroll component 1 of the present embodiment preferably has a Young's modulus of 70 GPa or more from the viewpoint of suppressing deformation due to mechanical stress applied during sliding.
  • the material of the aluminum alloy 5 is not particularly limited, and an aluminum alloy for casting, an aluminum alloy for forging, an aluminum alloy for die casting, etc. known in the art can be used.
  • Specific examples of aluminum alloys include Al—Cu—Mg alloys, Al—Cu—Si alloys, Al—Si alloys, Al—Si—Mg alloys, Al—Si—Cu alloys, and Al—Si ⁇ .
  • Mg-based alloy Al-Si-Cu-Mg-based alloy, Al-Cu-Ni-Mg-based alloy, Al-Mg-based alloy, Al-Si-Cu-Ni-Mg-based alloy, Al-Si-Fe-Cu-based Examples include alloys.
  • the aluminum alloy 5 is processed into a scroll shape.
  • the method for forming the fixed scroll and the swing scroll with the aluminum alloy 5 is not particularly limited, and a casting method, a forging method, and a die casting method can be used.
  • a surface grinding process may be performed. By performing the surface grinding process, the smoothness of the surface and the dimensional accuracy can be improved.
  • the surface of the aluminum alloy 5 processed into a scroll shape is degreased with an alkaline cleaning agent or the like, and the surface of the aluminum alloy 5 is cleaned by washing with water after the degreasing treatment.
  • the surface of the aluminum alloy 5 is formed by immersing at least the sliding surface 1a of the cleaned aluminum alloy 5 in a zinc phosphate treatment solution to precipitate zinc phosphate particles 10 as crystals, and then washing and drying with water.
  • a zinc phosphate layer 6 containing zinc phosphate particles 10 is formed in (S1 step).
  • the zinc phosphate treatment liquid is not particularly limited, and a commercially available product can be used.
  • the immersion time in the zinc phosphate treatment solution may be appropriately adjusted so that the desired thickness of the zinc phosphate layer 6 and the major axis (d1) of the zinc phosphate particles 10 can be obtained, for example, from 1 minute to 1 minute. It takes about 10 minutes.
  • the temperature of the zinc phosphate treatment liquid is about 60 ° C. to 80 ° C.
  • the temperature of the zinc phosphate treatment liquid is too low, the precipitation reaction of the zinc phosphate particles 10 will not be promoted. On the other hand, if the temperature of the zinc phosphate treatment liquid is too high, zinc phosphate particles 10 are precipitated in the treatment liquid, and the formation of the zinc phosphate layer 6 on the surface of the aluminum alloy 5 is hindered.
  • the scaly solid lubricant particles 11 are mixed in a binder 12 diluted with a solvent in a predetermined ratio, and mixed and dispersed to prepare a solid lubricant paste.
  • the method for mixing and dispersing the scaly solid lubricant particles 11 is not particularly limited, and examples thereof include a method using a kneader, a ball mill, a planetary ball mill, a kneading mixer, and a bead mill.
  • the binder 12 used here is preferably selected as appropriate in consideration of the curing treatment temperature described later.
  • the scaly solid lubricant particles 11 used here are the ratio (d1 / d2) of the major axis (d1) of the zinc phosphate particles 10 obtained in the S1 step to the major axis (d2) of the scaly solid lubricant particles 11. Is appropriately selected so as to be within the range of 0.5 or more and 2 or less. Further, the viscosity of the solid lubricant paste is such that when the solid lubricant paste is applied to the surface of the zinc phosphate layer 6, the scaly solid lubricant particles 11 flow or settle and intersect with the zinc phosphate particles 10.
  • the viscosity is such that Specifically, the solid lubricant paste preferably has a viscosity of 10 Pa ⁇ s or less, and more preferably 5 Pa ⁇ s or less.
  • the solvent used here is not particularly limited, but for example, phenols such as cresol, N-methyl-2-pyrrolidone, N, N'-dimethylformamide, 1,3-dimethylimidazolidinone, 4-morpholincarbaldehyde.
  • the solid lubricant paste is applied to the surface of the zinc phosphate layer 6 formed on the surface of the aluminum alloy 5 so as to have a uniform thickness (step S2).
  • the method for applying the solid lubricant paste is not particularly limited, and examples thereof include a spray method, a dipping method, a brush coating method, a screen printing method, and a transfer method.
  • the thickness of the coating film may be calculated back from the drying shrinkage rate and the curing shrinkage rate of the solid lubricant paste, and appropriately adjusted so that the thickness of the solid lubricating layer 7 after drying and curing becomes a desired thickness.
  • the solvent is removed by heating the coating film obtained in the S2 step to a temperature at which the solvent evaporates (S3 step).
  • the method of heating is not particularly limited, and examples thereof include a method using a drying oven, a hot plate, a hot air blower, an electric furnace, a high frequency heating furnace, and the like.
  • the heating temperature may be appropriately adjusted in consideration of the boiling point of the solvent used, and for example, it is preferable to heat to a temperature several tens of degrees lower than the boiling point. When heated to a temperature exceeding the boiling point of the solvent, the solvent evaporates rapidly, crater-like holes are generated in the coating film, and the thickness tends to be non-uniform.
  • the abundance ratio of the scaly solid lubricant particles 11 in a state parallel to the thickness direction of the coating film increases in the vicinity of the surface of the coating film. It becomes a factor that reduces the mobility.
  • it takes a long time to remove the solvent and the productivity is lowered.
  • the coating film from which the solvent has been removed in the S3 step is heated to a temperature at which the binder 12 is cured, so that the surface of the zinc phosphate layer 6 is subjected to solid lubrication containing the binder 12 and the scaly solid lubricant particles 11.
  • Layer 7 is formed (S4 step).
  • the method of heating is not particularly limited, and examples thereof include a method using a drying oven, a hot plate, a hot air blower, an electric furnace, a high frequency heating furnace, and the like. Further, the curing treatment temperature may be appropriately adjusted in consideration of the curing temperature of the binder 12 used.
  • the temperature at which the binder 12 is cured is preferably 250 ° C. or lower, more preferably 200 ° C. or lower, and even more preferably. It is 180 ° C. or lower.
  • the S2 step and the S3 step may be repeated twice, and then the S4 step may be performed once. Further, the solid lubricating layer 7 may have a two-layer structure by repeating the steps S2 to S4 twice.
  • the first embodiment it is possible to provide a scroll component in which a layer having excellent slidability and adhesion is formed on a sliding surface of a scroll made of an aluminum alloy, and a method for manufacturing the scroll component.
  • FIG. 7 is a schematic cross-sectional view of the scroll compressor according to the second embodiment.
  • the scroll compressor 14 is a so-called vertical scroll compressor, which compresses and discharges a fluid such as a refrigerant gas.
  • the scroll compressor 14 includes a closed container 15, a compression mechanism unit 17 that is housed in the closed container 15 and compresses a fluid flowing into the closed container 15, an electric motor 20 that generates a rotational force, and rotation generated by the electric motor 20.
  • a drive shaft 21 for transmitting a force to the compression mechanism unit 17 is provided.
  • the closed container 15 is formed in a cylindrical shape, for example, and has pressure resistance.
  • a suction pipe 22 for taking the fluid into the closed container 15 is connected to the side surface of the closed container 15, and a discharge pipe 23 for discharging the compressed fluid to the outside of the closed container 15 is connected to the other side surface.
  • the compression mechanism unit 17 includes a swing scroll 2, a fixed scroll 3, and an oldham mechanism 16 that prevents the swing scroll 2 from rotating.
  • the electric motor 20 includes a stator 18 and a rotor 19.
  • the drive shaft 21 is supported by a fixed frame 24 and an auxiliary frame 25.
  • the scroll component 1 according to the first embodiment is incorporated in the compression mechanism unit 17. By incorporating the scroll component 1 according to the first embodiment, the centrifugal force applied to the scroll during compressor operation is reduced.
  • the coating layer applied to the surface of the aluminum alloy 5 improves the slidability. Therefore, the rotation speed of the scroll component can be increased, the compression efficiency of the refrigerant gas is improved, and the output of the scroll compressor can be increased.
  • the method of incorporating the scroll component into the scroll compressor is not particularly limited, and can be performed according to a known method.
  • the second embodiment it is possible to provide a scroll compressor capable of preventing seizure of the sliding surface of the scroll made of an aluminum alloy during operation of the compressor.
  • Example 1 By immersing an Al—Si—Cu—Mg-based aluminum alloy (ADC14, Young ratio: 80 GPa) in a zinc phosphate treatment solution, a zinc phosphate layer is formed on the surface of the Al—Si—Cu—Mg-based aluminum alloy. It was formed to have a thickness of 3 ⁇ m. At this time, the treatment conditions were adjusted so that the major axis of the zinc phosphate particles was 4.5 ⁇ m.
  • ADC14 Young ratio: 80 GPa
  • the test piece of Example 1 was obtained.
  • the curing condition of the epoxy resin in the solid lubricating layer was 180 ° C. for 2 hours.
  • zinc phosphate particles and scaly solid lubricant particles were observed at the interface between the zinc phosphate layer and the solid lubricant layer. It was confirmed that and were interlaced.
  • Example 2 The treatment conditions were adjusted so that the major axis of the zinc phosphate particles was 4 ⁇ m, and instead of the scaly solid lubricant particles (MoS 2 particles) having a major axis of 5 ⁇ m, scaly solid lubricant particles (MoS 2 particles) having a major axis of 8 ⁇ m were used.
  • a test piece of Example 2 was obtained in the same manner as in Example 1 except that it was used. When the cross sections of the zinc phosphate layer and the solid lubricant layer of the obtained test piece were observed with a scanning electron microscope, zinc phosphate particles and scaly solid lubricant particles were observed at the interface between the zinc phosphate layer and the solid lubricant layer. It was confirmed that and were interlaced.
  • Example 3 Major axis of the zinc phosphate particles is adjusted processing conditions such that the 6 [mu] m, use the 3 ⁇ m scaly solid lubricant particles instead of the scaly solid lubricant particles of diameter 5 [mu] m (MoS 2 particles) (MoS 2 particles)
  • a test piece of Example 3 was obtained in the same manner as in Example 1 except that the test piece was obtained.
  • the cross sections of the zinc phosphate layer and the solid lubricant layer of the obtained test piece were observed with a scanning electron microscope, zinc phosphate particles and scaly solid lubricant particles were observed at the interface between the zinc phosphate layer and the solid lubricant layer. It was confirmed that and were interlaced.
  • Example 4 Major axis of the zinc phosphate particles is adjusted processing conditions such that the 5 [mu] m, using a 6 ⁇ m scaly solid lubricant particles instead of the scaly solid lubricant particles of diameter 5 [mu] m (MoS 2 particles) (MoS 2 particles)
  • a test piece of Example 4 was obtained in the same manner as in Example 1 except that the solid lubricating layer had a two-layer structure including a first solid lubricating layer and a second solid lubricating layer.
  • the c-plane orientation of 48% MoS 2 particles of the first solid lubricant layer was adjusted condition so c-plane orientation of the MoS 2 particles of the second solid lubricant layer is 73%.
  • phosphorus was found at the interface between the zinc phosphate layer and the first solid lubricating layer. It was confirmed that the zinc phosphate particles and the scaly solid lubricant particles were interlaced with each other.
  • Example 5 The treatment conditions were adjusted so that the major axis of the zinc phosphate particles was 3 ⁇ m, and 7.5 ⁇ m scaly solid lubricant particles (MoS 2 particles) were replaced with the scaly solid lubricant particles (MoS 2 particles) having a major axis of 5 ⁇ m.
  • a test piece of Example 5 was obtained in the same manner as in Example 1 except that the above was used. When the cross sections of the zinc phosphate layer and the solid lubricant layer of the obtained test piece were observed with a scanning electron microscope, zinc phosphate particles and scaly solid lubricant particles were observed at the interface between the zinc phosphate layer and the solid lubricant layer. It was confirmed that and were interlaced.
  • Example 6 Major axis of the zinc phosphate particles is adjusted processing conditions so that the 6 [mu] m, of 2.5 ⁇ m instead of the scaly solid lubricant particles of diameter 5 [mu] m (MoS 2 particles) scaly solid lubricant particles (MoS 2 particles)
  • a test piece of Example 6 was obtained in the same manner as in Example 1 except that the above was used.
  • the cross sections of the zinc phosphate layer and the solid lubricant layer of the obtained test piece were observed with a scanning electron microscope, zinc phosphate particles and scaly solid lubricant particles were observed at the interface between the zinc phosphate layer and the solid lubricant layer. It was confirmed that and were interlaced.
  • Comparative Example 2 The test of Comparative Example 2 in the same manner as in Example 1 except that a solid lubricating layer was formed on the surface of the Al—Si—Cu—Mg based aluminum alloy (ADC14) without forming a zinc phosphate layer. I got a piece.
  • a solid lubricating layer having a major axis of 4.5 ⁇ m in which scaly solid lubricant particles (MoS 2 particles) were dispersed in an epoxy resin at a ratio of 60% by volume was formed in an amount of about 10 ⁇ m.
  • the test piece was formed to have a thickness to obtain a test piece of Comparative Example 3.
  • the curing condition of the epoxy resin in the solid lubricating layer was 180 ° C. for 2 hours.
  • the slidability of the test pieces obtained in the above Examples and Comparative Examples was evaluated.
  • the seizure resistance by the pin-on disk method was evaluated.
  • the evaluation result of the seizure proof stress is based on the evaluation result of the seizure proof stress obtained by the test piece of Example 1, and the evaluation result of the seizure proof stress obtained by the test piece of each Example or each comparative example is the evaluation result of Example 1.
  • Table 1 shows a case that is superior to the evaluation result of ⁇ , a case that is equivalent, a case that is slightly inferior but within the allowable range, and a case that is considerably inferior and out of the allowable range.
  • the adhesion of the coating layer was evaluated for the test pieces obtained in the above Examples and Comparative Examples.
  • the peel strength of the coating layer was measured by the psychus method.
  • the evaluation result of the peel strength is based on the evaluation result of the peel strength obtained by the test piece of Example 1, and the evaluation result of the peel strength obtained by the test piece of each Example or each Comparative Example is the Example.
  • Table 1 shows cases that are superior to the evaluation result of 1 as ⁇ , equivalent cases as ⁇ , slightly inferior but within the permissible range as ⁇ , and considerably inferior and out of the permissible range as ⁇ .
  • test pieces of Examples 1 to 6 in which the zinc phosphate particles and the MoS 2 particles are present at the interface between the zinc phosphate layer and the solid lubricating layer are interlaced. It can be seen that the seizure resistance is very high and the slidability is excellent. Further, it can be seen that the test pieces of Examples 1 to 6 have high peel strength and excellent adhesion of the coating layer. In particular, the test pieces of Examples 1 to 4 in which the ratio (d1 / d2) of the major axis (d1) of the zinc phosphate particles to the major axis (d2) of the MoS 2 particles was 0.5 or more and 2 or less had a peeling strength.
  • the solid lubricating layer has a two-layer structure, and the c-plane orientation of the MoS 2 particles in the first solid lubricating layer is larger than the c-plane orientation of the MoS 2 particles in the second solid lubricating layer.
  • the test piece having a small structure the slidability and the adhesion of the coating layer are further improved.
  • the test piece of Comparative Example 1 and the test piece of Comparative Example 2 have a very low seizure resistance and a very poor slidability. Further, in Comparative Example 2, the adhesion of the solid lubricating layer is very poor.
  • the adhesion of the coating layer is remarkable in the test piece having a structure in which the zinc phosphate particles and the MoS 2 particles are not interlaced at the interface between the zinc phosphate layer and the solid lubricating layer. It is bad, and the seizure resistance is also slightly reduced.
  • the present invention it is possible to provide a scroll component in which a layer having excellent slidability and adhesion is formed on the sliding surface of a scroll made of an aluminum alloy. Further, according to the present invention, it is possible to provide a scroll compressor capable of preventing seizure of the sliding surface of a scroll made of an aluminum alloy during operation of the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un composant de volute caractérisé en ce qu'il a une volute fixe formée d'un alliage d'aluminium et une volute oscillante formée d'un alliage d'aluminium. Selon l'invention : la volute fixe et/ou la volute oscillante ont une couche de phosphate de zinc qui est formée sur la surface de glissement et contient des particules de phosphate de zinc et une couche de lubrification solide qui est formée sur la surface de la couche de phosphate de zinc et contient un liant et des particules de lubrifiant solide de type échelle ; et au niveau de l'interface entre la couche de phosphate de zinc et la couche de lubrification solide, les particules de phosphate de zinc et les particules de lubrifiant solide de type échelle sont présentes pour se croiser mutuellement.
PCT/JP2019/018423 2019-05-08 2019-05-08 Composant de volute, son procédé de fabrication et compresseur à volute WO2020225877A1 (fr)

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JP2019547324A JP6633264B1 (ja) 2019-05-08 2019-05-08 スクロール部品、その製造方法及びスクロール圧縮機
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CN114181493B (zh) * 2021-12-16 2024-04-19 江苏君华特种高分子材料股份有限公司 一种低磨损、高综合性能的peek基复合材料及其制备方法

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JP2007167754A (ja) * 2005-12-21 2007-07-05 Paint Staff:Kk 無機系塗装膜を備える物体及びその製造方法
JP2019044850A (ja) * 2017-08-31 2019-03-22 新日鐵住金株式会社 ガス導管用ポリエチレン被覆鋼管及びガス導管用ポリエチレン被覆鋼管の製造方法

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