WO2015052761A1 - Segment de piston et bague d'étanchéité pour turbocompresseur - Google Patents

Segment de piston et bague d'étanchéité pour turbocompresseur Download PDF

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Publication number
WO2015052761A1
WO2015052761A1 PCT/JP2013/077293 JP2013077293W WO2015052761A1 WO 2015052761 A1 WO2015052761 A1 WO 2015052761A1 JP 2013077293 W JP2013077293 W JP 2013077293W WO 2015052761 A1 WO2015052761 A1 WO 2015052761A1
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WO
WIPO (PCT)
Prior art keywords
hard coating
seal ring
piston ring
turbocharger
hard
Prior art date
Application number
PCT/JP2013/077293
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English (en)
Japanese (ja)
Inventor
清行 川合
田中　昭二
昌幸 大平
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Ｔｐｒ株式会社
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Priority to JP2015541324A priority Critical patent/JPWO2015052761A1/ja
Priority to PCT/JP2013/077293 priority patent/WO2015052761A1/fr
Publication of WO2015052761A1 publication Critical patent/WO2015052761A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
    • C23C14/325—Electric arc evaporation

Definitions

  • the present invention relates to a piston ring and a turbocharger seal ring used in an internal combustion engine. Snippet
  • a TiN coating is proposed in addition to a CrN coating or a coating Cr (N, O) in which oxygen is dissolved in CrN (Patent Documents 1 and 2).
  • a TiAlN coating having wear resistance superior to conventional hard chromium plating and TiN coating has also been proposed (Patent Document 3).
  • the TiN film and TiAlN film are also used in other fields, for example, a sealing ring of a mechanical seal, a cutting tool, a gear machining tool for dry machining, and the like (Patent Documents 4 to 6).
  • JP 2013-29190 A (Claim 1, paragraph 0001, etc.) JP 2013-29191 A (Claim 1, paragraph 0001, etc.) JP-A-5-141534 (Claim 1, paragraph 0024, etc.) JP-A-11-124665 (Claim 1, paragraph 0001, etc.) JP 2000-233320 A (Claim 1 etc.) JP 2006-281363 A (Claim 1, paragraph 0009, etc.)
  • a turbocharger seal ring used for an internal combustion engine is used in a more severe environment than a piston ring for an internal combustion engine in terms of operating temperature and oxidizing atmosphere.
  • the turbine wheel 4 rotates by the energy of the engine exhaust gas, and the rotational speed of the turbine shaft 5 formed integrally with the turbine wheel 4 reaches 100,000 revolutions per minute.
  • the turbocharger seal ring 6 is mounted in a groove 5G formed on the outer peripheral surface 5S of the turbine shaft 5 made of iron-based material, and is held in a bearing housing 8 that supports the turbine shaft 5 via a bearing 7. Has been.
  • both side surfaces (first side surface 6BS1) of the seal ring base 6B are used.
  • the hard coating 6F is formed on the second side surface 6BS2) to improve the wear resistance of both side surfaces (first side surface 6S1 and second side surface 6S2) of the seal ring.
  • the hard coating mainly used on both side surfaces of the turbocharger seal ring needs to be excellent in crack resistance and peelability similarly to the hard coating mainly used on the outer peripheral surface of the piston ring.
  • the present invention has been made in view of the above problems, and a piston ring and a turbocharger provided with a hard coating excellent in crack resistance and peelability when a counterpart material that slides or contacts is an iron-based material.
  • An object of the present invention is to provide a seal ring for use.
  • the piston ring for an internal combustion engine is a piston ring in which a hard coating is coated on at least one surface selected from the outer peripheral surface, the first side surface, and the second side surface of the piston ring base material.
  • the void area ratio in the cross section of the hard coating is 2.2% or less, and the ratio of the diffraction peak intensity of the (200) plane to the diffraction peak intensity of the (111) plane in the X-ray diffraction measurement of the hard coating (I 200 / I 111 ) is more than 1 and 15 or less.
  • the atomic ratio (Al / (Ti + Al)) is preferably in the range of 0.18 to 0.56.
  • the turbocharger seal ring used in the internal combustion engine of the present invention is a turbo in which a hard coating is coated on at least one surface selected from the outer peripheral surface, the first side surface, and the second side surface of the turbocharger seal ring base material.
  • the hard coating has a NaCl-type crystal structure, contains at least Ti, Al and N, and has an atomic ratio of Al to Ti and Al (Al / (Ti + Al)) of 0.10 to 0
  • the composition has a composition in the range of .63, the void area ratio in the cross section of the hard coating is 2.2% or less, and (200) with respect to the diffraction peak intensity of the (111) plane in the X-ray diffraction measurement of the hard coating.
  • the ratio of the diffraction peak intensity of the surface (I 200 / I 111 ) is more than 1 and 15 or less.
  • the atomic ratio (Al / (Ti + Al)) is preferably in the range of 0.18 to 0.56.
  • FIG. 2 (A) is an overall view showing the structure in the vicinity of the turbine shaft
  • FIG. 2 (B) shows the structure in the vicinity of the seal ring for turbocharger shown in the dotted line in FIG. 2 (A).
  • the piston ring and the turbocharger seal ring of the present embodiment may be simply referred to as “seal member”), the outer peripheral surface of the base material, It is a sealing member in which a hard coating is coated on at least one surface selected from a first side surface and a second side surface (a surface opposite to the first side surface).
  • the hard coating has a NaCl-type crystal structure, contains at least Ti, Al and N, and has an atomic ratio of Al to Ti and Al (Al / (Ti + Al)) of 0.10 to 0.63. Having a composition within the range.
  • the void area ratio in the cross section of the hard coating is 2.2% or less, and the ratio of the diffraction peak intensity of the (200) plane to the diffraction peak intensity of the (111) plane in the X-ray diffraction measurement of the hard coating (I 200 / I 111 ) is more than 1 and 15 or less.
  • Al / (Ti + Al) By setting Al / (Ti + Al) to 0.63 or less, wurtzite AlN can be prevented from crystallizing in the hard coating, and as a result, the hardness and strength of the hard coating are surely lowered. Can be suppressed. Moreover, it can suppress that the crack resistance and peelability of a hard film fall by making Al / (Ti + Al) 0.1 or more. Al / (Ti + Al) is more preferably within the range of 0.18 to 0.56.
  • I 200 / I 111 is more preferably within a range of 3.0 to 13.
  • the hard coating used in the seal member of the present embodiment includes a metal element and a non-metal element in an atomic ratio of approximately 1: 1, where the metal element includes Ti and Al as main elements,
  • the metal element contains N as a main element, and may be a TiAlN film substantially containing only Ti, Al, and N.
  • the hard coating may contain other elements other than Ti, Al, and N as necessary.
  • a part of Ti and Al can be replaced with another metal element, or a part of N can be replaced with another nonmetallic element.
  • Other metal elements X1 other than Ti and Al and other non-metal elements X2 other than N are included in appropriate amounts as long as they do not adversely affect the mechanical properties of the hard coating, particularly crack resistance and peelability.
  • X1 / (Ti + Al + X1) may be 0.1 or less, more preferably 0.05 or less, and even more preferably less than 0.02.
  • X2 / (N + X2) may be less than 0.02.
  • the hard coating used in the seal member of the present embodiment may contain non-metallic elements B, C, O, etc. if necessary, or these elements are not contained at all. May be.
  • C When C is added, it is possible to suppress a decrease in the coefficient of friction due to an improvement in slipperiness and an aggressiveness to the mating material that comes into contact with the seal member of the present embodiment.
  • the atomic ratio (C / (C + N)) of C with respect to N and C may be included more than 0 and less than 0.02.
  • the film composition of the hard coating can be measured by various analysis methods, but the sealing member of this embodiment is measured by fluorescent X-ray analysis (XRF).
  • the micro Vickers hardness (Hv) of the hard coating is preferably 1700 or more, and more preferably 1800 or more.
  • the micro Vickers hardness is preferably 1700 or more, and more preferably 1800 or more.
  • the indentation elastic modulus of the hard coating (to be precise, it means “indentation elastic modulus including Poisson's ratio”), which means a value represented by EIT / (1- ⁇ s 2 ), where EIT is the indentation elastic modulus, ⁇ s Is the Poisson's ratio of the hard coating.) Is preferably 320 GPa or more, and more preferably 350 GPa or more.
  • the upper limit value of the indentation elastic modulus is not particularly limited, but it is preferable that the upper limit is substantially about 390 GPa.
  • the surface of the film formed to have a film thickness of 15 ⁇ m or more is polished flat with emery paper of about # 1000 to # 1500, and further converted into a diamond slurry. And buffed.
  • the same diamond indenter as in the Vickers hardness measurement was used as the indenter, and a nanoindentation tester HM-2000 manufactured by Fisher Instruments was used. In both cases, the measurement load was 100 gf. If the sample is too thin, it is affected by the hardness of the base material, and accurate measurement cannot be performed.
  • the method of forming the hard coating is not particularly limited, and examples thereof include physical vapor deposition methods (PVD methods) such as ion plating methods and sputtering methods, chemical vapor deposition methods (CVD methods), and plasma CVD methods. Although a known film forming method can be used, an arc ion plating method is preferable.
  • PVD methods physical vapor deposition methods
  • CVD methods chemical vapor deposition methods
  • plasma CVD methods plasma CVD methods.
  • a known film forming method can be used, an arc ion plating method is preferable.
  • the hard film is formed by the following procedure. First, the degreased and cleaned substrate is placed in a vacuum chamber, and the inside of the vacuum chamber is depressurized until the pressure reaches about 1.3 ⁇ 10 ⁇ 3 Pa. Next, the substrate is heated to about 573K to 673K. Then, ion bombardment is performed by applying a bias voltage of about ⁇ 600 to ⁇ 800 V to the substrate. Thereafter, the bias voltage is lowered to about ⁇ 5 to ⁇ 50 V, and the process gas is introduced into the vacuum chamber.
  • arc discharge is performed, and at least one selected from the outer peripheral surface, the first side surface, and the second side surface of the base material is a metal component derived from a metal target as a deposition source and a non-metal component derived from a process gas.
  • a nitride-based film is formed by depositing on one surface.
  • a Ti—Al alloy target is used as the metal target, and the ratio of Ti and Al constituting the target is appropriately selected according to the target composition of the hard coating.
  • Al / (Ti + Al) in the hard coating is almost uniquely determined by the metal target composition used.
  • Al / (Ti + Al) in the hard coating can be adjusted by a combination of metal targets having different compositions and respective arc current values when forming a film using them.
  • N 2 gas As the process gas, only N 2 gas is usually used. However, depending on the composition of the hard coating, N 2 gas and CH 4 gas (mixed with C), O 2 gas (mixed with O), TMS, A mixed gas in which various gases such as tetramethylsilane, C and Si are mixed at a predetermined ratio can be used. Thus, the hard film which has a desired composition can be obtained by selecting a composition of a metal target and process gas.
  • I 200 / I 111 can be changed by a bias voltage, an internal pressure during film formation, or the like.
  • the diffraction peak of the (200) plane can be controlled to be relatively higher than the diffraction peak of the (111) plane by increasing the bias voltage or decreasing the internal pressure.
  • the diffraction peak of the (111) plane can be controlled to be relatively higher than the diffraction peak of the (200) plane.
  • unreacted particles called droplets are mixed in the hard film.
  • the unreacted particles are formed in the form of particles taken into the hard film without sufficiently reacting with a gas component such as N 2 gas by releasing a large amount of film forming raw material at once from an arc spot on the metal target. It means a substance.
  • a gas component such as N 2 gas
  • voids are formed in the periphery of the unreacted particles and in the traces of the unreacted particles dropping out in the hard coating.
  • the area ratio (void area ratio) due to the voids in the hard film in the cross section of the hard film Is 2.2% or less.
  • the cross-sectional area ratio of unreacted particles contained in the hard coating is preferably about 1.5% or less.
  • the cross-sectional area ratio of the unreacted particles is more preferably 1.8% or less, and the closer to 0%, the better.
  • the cross-sectional area ratio of unreacted particles is preferably as close to 0%.
  • the particle size of the unreacted particles is preferably 7 ⁇ m or less, more preferably 5 ⁇ m or less, and the smaller the particle size, the better. .
  • the method for reducing the number and size of the voids is not particularly limited.
  • the gap may be decreased by increasing the distance between the metal target and the substrate to be deposited and setting the bias voltage higher. It is valid.
  • it is effective to arrange an adhesion preventing plate or the like in the vicinity of the metal target.
  • increasing the frequency of replacement of the metal target is also effective in reducing the number and size of voids and unreacted particles. It is valid.
  • a technique for reducing the number of unreacted particles by strengthening the magnetic field of the evaporation source has been developed.
  • the void area ratio in the cross section of the hard coating and the cross sectional area ratio of the unreacted particles were obtained by the following procedure.
  • the piston ring or turbocharger seal ring is cut to a length of about 1 cm in the circumferential direction, and the hard coating is processed by the ion milling method or the focused ion beam method (FIB method), so that the cross section of the hard coating is obtained.
  • the cross section of the hard film was image
  • the void area ratio was binarized for the void portion and the other portions, and the cross-sectional area ratio was binarized for the unreacted particle portion and the other portions. And about the same measurement sample, the average value of 5 visual fields was calculated
  • the base material used for forming the hard coating can be used without particular limitation as long as it is a known base material used for piston rings or turbocharger seal rings.
  • a base material used for piston rings or turbocharger seal rings For example, stainless steel, spring steel, and high-speed tools can be used.
  • a base material made of steel or heat-resistant steel can be used.
  • the hard coating is formed so as to cover the outer peripheral surface of the piston ring base material. Moreover, the hard film may be formed into the other surface as needed. If a specific example is given, in the sealing member of this embodiment, in addition to providing the hard coating 3F so as to cover the outer peripheral surface 3BS of the piston ring base 3B as illustrated in FIG. That is, you may provide a hard film so that 1st side surface 3B1 and / or 2nd side surface 3B2 may be covered.
  • the seal member of the present embodiment is a turbocharger seal ring, the hard coating is formed to cover the first side surface and / or the second side surface of the turbocharger seal ring base material.
  • the hard film may be formed into the other surface as needed.
  • a hard coating 6F is provided so as to cover the first side surface 6BS1 and the second side surface 6BS2 of the turboring seal ring base material 6B.
  • a hard coating may be provided so as to cover the outer peripheral surface 6BE, which is the surface facing the bearing housing 8.
  • the hard coating 6F provided on one of the first side surface 6BS1 and the second side surface 6BS2 may be omitted.
  • an undercoat layer may be provided between the seal member substrate and the hard coating as necessary in order to improve the adhesion between the seal member substrate and the hard coating.
  • this undercoat layer for example, a thin film mainly composed of Ti, Cr, Ti—Al alloy or the like can be used.
  • the film thickness of the hard coating is not particularly limited, but is preferably 10 ⁇ m or more in the case of a piston ring from the viewpoint of ensuring durability.
  • the upper limit value of the film thickness is not particularly limited, but is preferably 30 ⁇ m or less from the practical viewpoint such as productivity.
  • about 3 ⁇ m is preferable from the viewpoint of durability and practicality.
  • the surface of the hard film after forming the hard film, it is preferable to perform lapping or polishing to make the surface of the hard film have a roughness Ra of 0.2 or less. By reducing the roughness, it becomes easier to suppress the damage of the hard coating by suppressing the wear of the counterpart material and reducing the frictional resistance.
  • a metal target composed of a metal composition corresponding to the composition of the hard film formed in each of the examples and comparative examples shown in Table 1 and Table 2 is used, and as a process gas, N 2 gas or a mixed gas in which N 2 gas and CH 4 gas were mixed at a predetermined ratio was used according to the composition of the hard coating film formed in each example and comparative example.
  • the hard coating Cr (N, O) of Comparative Example 1 is a coating in which O is dissolved in CrN having a NaCl-type crystal structure, and a metallic element and a nonmetallic element are approximately 1: 1 in atomic ratio.
  • the metallic element contains Cr
  • the nonmetallic element contains N as a main element
  • the purpose of adding O to CrN is to strengthen the coating by dissolving O in the hard coating and suppress the occurrence of cracks and peeling.
  • the internal pressure during film formation was appropriately set within a range of 2 Pa to 5 Pa and the bias voltage within a range of ⁇ 10 V to ⁇ 50 V so that a desired value of I 200 / I 111 was obtained. Selected.
  • the distance between the metal target and the substrate, the bias voltage, the presence or absence of the deposition plate, the amount of target material used, the magnetic field distribution near the target surface, etc. was made to fluctuate by changing suitably.
  • the crack resistance / peelability of the hard coating was evaluated by the following procedure using a ring-on-rotor friction tester shown in FIG. First, the outer peripheral surface of the test piece 10 obtained by cutting a piston ring sample in the circumferential direction of the piston ring from about 1 cm to 2 cm is pressed against a steel rotor 12 rotating at a constant speed by applying a load P with a weight. Seizure was generated. In this state, after rotating the rotor 12 for a certain period of time, it was confirmed whether or not the hard coating was cracked or peeled. If no damage was observed, the load P was further increased and retested. By repeating this, the load P at which cracks and peeling began to occur was confirmed.
  • the lubricating oil was supplied using a tubing pump or an air dispenser.
  • the test conditions are as follows. Further, the results shown in Table 1 and Table 2 show the relative value of the load P at which cracks and peeling began to occur in the test piece 10 of Comparative Example 1 as a reference value 1. A larger value means that the hard coating is more excellent in crack resistance and peelability.
  • the evaluation result of crack resistance / peelability is preferably 1.0 or more. ⁇ Initial load P: 40N ⁇ Rotation speed of the rotor 12: 1000 rpm ⁇ Rotation time of the rotor 12 per test: 1 min
  • ⁇ Abrasion resistance and opponent attack> The wear resistance and opponent attack were evaluated using a pin-on-plate reciprocating friction tester shown in FIG.
  • a pin-on-plate reciprocating friction tester shown in FIG.
  • an upper test piece 20 having a hard film formed on the tip of a pin is pressed against a plate-like lower test piece 22 by applying a load P by a spring load, and the lower test piece 22 reciprocates. By doing so, both are configured to slide.
  • the upper test piece 20 is like a piston ring.
  • the lower test piece 22 is like a cylinder bore made of cast iron, and is composed of a cast iron plate. Lubricating oil was supplied using a tubing pump or an air dispenser.
  • the wear amount of the upper test piece 20 and the lower test piece 22 was measured with a surface roughness meter.
  • the wear amount of the upper test piece 20 means the wear amount of the hard coating provided on the tip of the pin
  • the wear amount of the lower test piece 22 means the wear amount (wear depth) of the counterpart material.
  • the test conditions are as follows. Further, the results shown in Tables 1 and 2 show the wear amount of Comparative Example 1 as a reference value 1 and show the relative value. As for the “wear resistance”, the smaller the value, the harder the wear of the hard coating. The smaller the “partner aggression” is, the more the wear of the counterpart material is suppressed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Physical Vapour Deposition (AREA)
  • Supercharger (AREA)

Abstract

L'invention concerne un segment de piston et une bague d'étanchéité pour un turbocompresseur qui sont pourvus d'un film de couverture dur ayant une résistance au craquelage et au décollement supérieure. Dans le segment de piston et la bague d'étanchéité pour un turbocompresseur, qui sont tels qu'au moins une surface sélectionnée parmi la surface périphérique externe, une première surface latérale et une seconde surface latérale d'un substrat est recouverte d'un film de couverture dur, le film de couverture dur a une structure cristalline du type NaCl, contient au moins Ti, Al et N, a une composition dans laquelle le rapport atomique (Al/(Ti+Al)) de Al à Ti et Al est compris dans la plage de 0,10-0,63, a un rapport de zone vide dans une section transversale du film de couverture dur qui n'est pas supérieur à 2,2%, et a un rapport (I200/I111) de la puissance de pic de diffraction dans le plan (200) par rapport à la puissance de pic de diffraction dans le plan (111) dans une mesure de diffraction de rayon X du film de couverture dur qui est supérieur à 1 et non supérieur à 15.
PCT/JP2013/077293 2013-10-08 2013-10-08 Segment de piston et bague d'étanchéité pour turbocompresseur WO2015052761A1 (fr)

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JP2015541324A JPWO2015052761A1 (ja) 2013-10-08 2013-10-08 ピストンリングおよびターボチャージャー用シールリング
PCT/JP2013/077293 WO2015052761A1 (fr) 2013-10-08 2013-10-08 Segment de piston et bague d'étanchéité pour turbocompresseur

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017057897A (ja) * 2015-09-15 2017-03-23 Ｔｐｒ株式会社 ピストンリング
JP2017057896A (ja) * 2015-09-15 2017-03-23 Ｔｐｒ株式会社 ピストンリング
WO2019077962A1 (fr) * 2017-10-16 2019-04-25 株式会社Ihi Structure d'étanchéité pour compresseur de suralimentation

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JPH05141534A (ja) * 1991-11-14 1993-06-08 Nippon Piston Ring Co Ltd ピストンリング
JP2644710B2 (ja) * 1988-03-24 1997-08-25 神鋼コベルコツール株式会社 耐摩耗性皮膜被覆部材
JP3599628B2 (ja) * 2000-02-25 2004-12-08 株式会社タンガロイ 複合硬質膜被覆部材
JP2005535836A (ja) * 2002-08-16 2005-11-24 ボーグワーナー・ターボ・システムズ・ゲーエムベーハー 内燃エンジン用排気ガスターボチャージャー
JP2008307615A (ja) * 2007-06-12 2008-12-25 Mitsubishi Materials Corp 重切削加工で硬質被覆層がすぐれた耐欠損性を発揮する表面被覆切削工具およびその製造方法
JP2009090452A (ja) * 2007-08-24 2009-04-30 Seco Tools Ab 耐熱超合金の一般旋削のための被覆切削工具

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Publication number Priority date Publication date Assignee Title
JP2644710B2 (ja) * 1988-03-24 1997-08-25 神鋼コベルコツール株式会社 耐摩耗性皮膜被覆部材
JPH05141534A (ja) * 1991-11-14 1993-06-08 Nippon Piston Ring Co Ltd ピストンリング
JP3599628B2 (ja) * 2000-02-25 2004-12-08 株式会社タンガロイ 複合硬質膜被覆部材
JP2005535836A (ja) * 2002-08-16 2005-11-24 ボーグワーナー・ターボ・システムズ・ゲーエムベーハー 内燃エンジン用排気ガスターボチャージャー
JP2008307615A (ja) * 2007-06-12 2008-12-25 Mitsubishi Materials Corp 重切削加工で硬質被覆層がすぐれた耐欠損性を発揮する表面被覆切削工具およびその製造方法
JP2009090452A (ja) * 2007-08-24 2009-04-30 Seco Tools Ab 耐熱超合金の一般旋削のための被覆切削工具

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017057897A (ja) * 2015-09-15 2017-03-23 Ｔｐｒ株式会社 ピストンリング
JP2017057896A (ja) * 2015-09-15 2017-03-23 Ｔｐｒ株式会社 ピストンリング
WO2019077962A1 (fr) * 2017-10-16 2019-04-25 株式会社Ihi Structure d'étanchéité pour compresseur de suralimentation
CN111183279A (zh) * 2017-10-16 2020-05-19 株式会社Ihi 增压器的密封构造

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