WO2007080855A1 - Bague de synchroniseur, son procede de fabrication et poudre pour projection thermique - Google Patents

Bague de synchroniseur, son procede de fabrication et poudre pour projection thermique Download PDF

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Publication number
WO2007080855A1
WO2007080855A1 PCT/JP2007/050100 JP2007050100W WO2007080855A1 WO 2007080855 A1 WO2007080855 A1 WO 2007080855A1 JP 2007050100 W JP2007050100 W JP 2007050100W WO 2007080855 A1 WO2007080855 A1 WO 2007080855A1
Authority
WO
WIPO (PCT)
Prior art keywords
alumina
synchronizer ring
coating
aluminum
powder
Prior art date
Application number
PCT/JP2007/050100
Other languages
English (en)
Japanese (ja)
Inventor
Yutaka Takahashi
Heishirou Takahashi
Yoshinari Kato
Jun Kikuchi
Satoru Osawa
Junya Kitamura
Original Assignee
Taiheiyo Cement Corporation
Akechi Ceramics Kabushiki Kaisha
Fujimi Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiheiyo Cement Corporation, Akechi Ceramics Kabushiki Kaisha, Fujimi Incorporated filed Critical Taiheiyo Cement Corporation
Publication of WO2007080855A1 publication Critical patent/WO2007080855A1/fr

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Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/025—Synchro rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/361—Alumina or aluminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
    • F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
    • F16D2023/0637—Details relating to the hub member on which the sliding is arranged

Definitions

  • the present invention relates to a synchronizer ring suitable for a transmission of a vehicle that particularly requires high torque, a method for manufacturing the synchronizer ring, and a thermal spray powder used for the manufacture.
  • a synchronizer ring used in a manual transmission such as an automobile is usually manufactured using a wear-resistant copper alloy such as high-strength brass.
  • Synchronizer rings used for applications that require high output and high torque, such as large vehicles and sports cars, have a wear-resistant coating formed around their sliding parts so that they can withstand high loads. (For example, see Patent Document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 4-371560
  • the present invention has been made in view of intensive circumstances, and provides a synchronizer ring that can reduce wear of a sliding portion and a counterpart material while realizing good power transmission. With the goal. Another object of the present invention is to provide a method for manufacturing the synchronizer ring. Furthermore, an object of the present invention is to provide a thermal spraying powder that is suitably used for manufacturing the synchronizer ring.
  • the present inventors diligently studied the composition, physical properties, etc. of the wear-resistant coating formed on the sliding portion of the synchronizer ring. As a result, the wear resistance of the sliding surface in oil and the counterpart The inventors have found a material, a manufacturing method, and the like that can realize good power transmission with a large friction coefficient while maintaining a low aggressiveness to the material, and have completed the present invention described below.
  • a synchronizer ring having a base material and a coating film provided on the surface of the sliding portion of the base material, wherein the coating film is made of metallic aluminum or aluminum.
  • a synchronizer ring which is composed of an alloy containing as a main component and alumina, and has a composite material strength with an alumina content of 5 to 25% by volume.
  • the surface roughness of the coating is preferably 3 ⁇ m to 25 ⁇ m.
  • the Vickers hardness of the coating is preferably 60 to 120 Hv.
  • the coefficient of friction between the pig iron and the synchronizer ring that is the counterpart material when the synchronizer ring is actually installed in the transmission, that is, the coefficient of friction in oil between the pig iron and the coating is 0.1 to 0. 25 is preferred.
  • This coating can be suitably formed by a thermal spraying method. Accordingly, in the second and third aspects of the present invention, a thermal spray powder used for the manufacture of a synchronizer ring is provided.
  • metallic aluminum or an alloy containing aluminum as a main component and alumina are mechanically mixed with alumina, and the content of the alumina is 50 to 80% by volume.
  • a thermal spray powder is provided.
  • metal alumina or an aluminum-based alloy and alumina are mixed by a granulation method, a granulation sintering method, or an atomization method, and the alumina Thermal spray powder having a content of 5 to 40% by volume is provided.
  • the average particle diameter of alumina in these sprayed powders is preferably 3 m to 20 m.
  • a method for producing a synchronizer ring using the above-mentioned sprayed powder is provided.
  • the surface of the sliding portion of the substrate is mechanically mixed with metal aluminum or an alloy mainly composed of aluminum and alumina, and the aluminum Synchronizer ring that forms a thermal sprayed film with a composite material strength of 5-25% by volume of alumina by high-speed flame spraying or plasma spraying of sprayed powder with a Mina content of 50-80% by volume A manufacturing method is provided.
  • the surface of the sliding portion of the base material is formed by a granulation method, a granulation sintering method, or an atomization method with metal aluminum or an alloy mainly composed of aluminum and alumina.
  • thermo spray powder having an alumina content of 5 to 40 vol% a composite material having an alumina content of 5 to 25 vol% by spraying the thermal spray powder having an alumina content of 5 to 40 vol% with high-speed flame spraying or plasma spraying.
  • a method of manufacturing a synchronizer ring that forms a thermally sprayed coating is also provided.
  • the present invention it is possible to increase the coefficient of friction between the coating formed on the sliding portion of the synchronizer ring and the counterpart material (dynamic shaft). As a result, the power transmission efficiency of the transmission can be increased, and smooth and responsive power transmission can be realized. In addition, since the wear of the synchronizer ring and the mating material can be suppressed, the durability and reliability of the transmission are improved. In addition, such improved transmission performance leads to improved vehicle fuel efficiency. As a result, the present invention also contributes to environmental conservation.
  • FIG. 1 is a schematic sectional view of a synchronizer ring.
  • FIG. 2 is a table showing the composition, average particle size, and production method of various thermal spray powders.
  • FIG. 4 A table showing evaluation results and test results.
  • FIG. 1 shows a schematic cross-sectional view of the synchronizer ring.
  • the synchronizer ring 10 has a structure in which a coating 16 is provided on the inner peripheral surface 14 of a ring-shaped base material 12.
  • a power shaft (not shown) is inserted through the substrate 12, the surface of the coating 16 becomes a sliding surface with respect to the power shaft.
  • the sliding surface of the base material 12 on which the coating film 16 is to be provided is the inner peripheral surface 14 of the base material 12.
  • the base material 12 also has high strength brass, for example.
  • the coating 16 includes metallic aluminum (A1) or an alloy containing A1 as a main component and alumina (Al 2 O 3
  • An alloy mainly composed of A1 refers to an alloy having an A1 content of 50% by volume or more. This alloy is preferably 70% by volume or more. Preferably, 80% by volume or more is used. Specific examples of this alloy include Al-Mn (manganese), Al-Si (silicon), A1-Mg (magnesium), and Al-Mg-Si.
  • the content of Al 2 O in the film 16 is 5 to 25% by volume in order to obtain an appropriate friction coefficient.
  • the surface roughness of the coating 16 is preferably 3 ⁇ m to 20 ⁇ m in terms of Ra. If the surface roughness of the coating 16 is less than 3 ⁇ m, seizure may occur if the lubricating oil supply is low. On the other hand, when the surface roughness of the film 16 is more than 20 m, the friction coefficient becomes high and the power shaft may be damaged.
  • the coefficient of friction in oil between the sliding surface of the synchronizer ring 10 (that is, the surface of the coating 16) and the power shaft is an important factor that affects the performance of the transmission.
  • a material for the power shaft pig iron is generally used. Therefore, a material capable of setting the coefficient of friction in the oil between the coating 16 and pig iron to be 0.10 to 0.25 is suitable as the coating 16. If this friction coefficient is less than 0.10, the power transmission efficiency will decrease. On the other hand, if this coefficient of friction is more than 0.25, the pig iron will be worn and the durability will be reduced.
  • the hardness of the coating film 16 is preferably 60 to 120 Hv in terms of Picker's hardness. Thereby, the wear resistance of the coating film 16 itself can be maintained well while suppressing the wear of the power shaft.
  • a thermal spraying method is preferable in consideration of stability and adhesion.
  • the A1 alloy is a low melting point metal
  • high-speed flame spraying methods such as HVOF and HVAF are suitable.
  • plasma spraying can be used depending on the metal type.
  • a spray gun having a short frame is preferably used. The longer the frame, the better the spraying efficiency. However, if the frame is lengthened, there is a possibility that spraying cannot be continued due to adhesion and blockage of the sprayed material inside the spraying gun called spitting due to the molten metal powder.
  • the method for forming the coating film 16 is not limited to the thermal spraying method, and can be carried out by various existing methods.
  • Examples of the method for producing the thermal spray powder used when the coating 16 is formed by the thermal spraying method include a mechanical mixing method, a granulation method, a granulation sintering method, and an atomization method.
  • A1 or an alloy containing A1 as a main component contained in the thermal spray powder dissolves in the frame, so that an appropriate friction coefficient is generated on the surface of the thermal spray film to be formed. This suppresses damage to the power shaft.
  • the A1 powder or alloy powder containing A1 as a main component used for thermal spraying is usually produced by an atomizing method or a pulverizing method. When a thermal spray powder having an average particle size of 10 m to 150 m is used, it is easy to form the coating film 16 having the above-described characteristics. However, the average particle size of the thermal spray powder is not particularly limited to such values!
  • Al O contained in the thermal spray powder imparts an appropriate coefficient of friction to the surface of the thermal spray film to be formed.
  • Al O powder used for spraying is usually
  • Al (OH) aluminum hydroxide
  • the Al 2 O content in the thermal spray powder is such that the thermal spray powder is produced by a mechanical mixing method.
  • the sprayed powder is manufactured by a granulation method, granulation sintering method or atomizing method, it is 5-40% by volume of the total amount of the sprayed powder. And Depending on the manufacturing method of the thermal spray powder, the Al O content in the thermal spray powder
  • the thermal spraying efficiency varies depending on the composition and manufacturing method of the thermal spray powder, and the Al O content in the thermal spray film to be formed is 5-25% by volume.
  • the average particle diameter of the Al 2 O powder in the thermal spray powder produced by mechanical mixing is moderate.
  • the coefficient of friction of the resulting sprayed film is small.
  • the average particle diameter is preferably 10 / ⁇ ⁇ to 150 m. The reason is the same as in the case of using the thermal spray powder by the mechanical mixing method.
  • Fig. 2 shows a table describing the composition, average particle size, and manufacturing method of various thermal spray powders. Using these thermal spray powders, a thermal spray film having a thickness of 100 m was formed on the inner peripheral surface of the base material having high brass strength by the thermal spraying method shown in the table of FIG. Figure 3 shows a detailed table of spraying conditions.
  • Comparative Example 3 Produced. This was designated as Comparative Example 3. Furthermore, as Comparative Examples 5 and 6, Al O powder and A1 powder were used.
  • the Vickers hardness of the sprayed film was measured by a picker hardness meter by cutting the prepared sample to prepare a cross-sectional sample.
  • the surface roughness of the sprayed film was measured by using a stylus type surface roughness meter, and the average surface roughness Ra was evaluated.
  • the abrasion friction test was carried out by sliding various samples prepared as described above and pig iron material in gear oil using a friction abrasion tester (EFM-VI-1010).
  • the pressure is 100 NZcm 2
  • the peripheral speed is 0.5 mZsec
  • the radius of rotation is 6.5 mm
  • the peripheral speed is 0.5 mZsec to 2.5 mZsec at intervals of 0.5 mZsec every 30 sec. Changed.
  • the peripheral speed was returned to 0.5 mZsec, the pressing pressure was increased by 50 NZcm 2 , and the peripheral speed was changed again as before. There is no change in the radius of rotation.
  • the friction coefficient was measured, and the amount of wear of each sample and pig iron material was measured after the test.
  • FIG. 4 shows a table describing the measurement results of the Vickers hardness and surface roughness of the sprayed film and the results of the abrasion friction test. It was confirmed that the friction coefficient in the range of 0.1 to 0.25 was obtained in all the samples of the examples, and the wear amount of each of the sprayed film and the pig iron material was suppressed to be small. On the other hand, in Comparative Example 1, the amount of wear of the sprayed coating itself increased. The reason for this was thought to be the low content of Al 2 O powder. Comparative Example 2
  • Comparative Example 3 since SiC was included, the Vickers hardness was large and the coefficient of friction was also large, which increased the amount of wear of the pig iron material. Since Comparative Example 5 has a low Al 2 O content, its own wear amount is low.
  • the present invention is naturally applicable to a synchronizer ring used in a transmission, but is not limited thereto, and can be applied to, for example, a clutch plate.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Mechanical Operated Clutches (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention concerne une bague de synchroniseur pouvant réduire l’usure d’une pièce coulissante et d’un élément d’accouplement tout en assurant une transmission de puissance satisfaisante. L’invention a également trait à un procédé de fabrication d’une bague de synchroniseur et à une poudre pour projection thermique à utiliser lors du procédé de fabrication. La bague de synchroniseur (10) est composée, sur sa surface circonférentielle intérieure (14), d’une base (12), d’un film de revêtement (16) constitué d’une matière composite comprenant de l’alumine et un aluminium métallique ou un alliage composé principalement d’aluminium, et présentant une teneur en alumine comprise entre 5 et 25 vol % par projection à la flamme grande vitesse ou projection plasma.
PCT/JP2007/050100 2006-01-10 2007-01-09 Bague de synchroniseur, son procede de fabrication et poudre pour projection thermique WO2007080855A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006002770A JP2007182618A (ja) 2006-01-10 2006-01-10 シンクロナイザーリングおよびその製造方法、その製造に用いられる溶射粉末
JP2006-002770 2006-01-10

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Publication Number Publication Date
WO2007080855A1 true WO2007080855A1 (fr) 2007-07-19

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Publication number Priority date Publication date Assignee Title
JP5009819B2 (ja) * 2008-01-16 2012-08-22 株式会社三工社 鉄道車両用ブレーキ装置の制輪子隙間調整装置
CN101671804B (zh) * 2009-08-29 2011-08-17 桂林星火机械制造有限公司 在碳钢同步器齿环锥面设置Mo2FeB2金属陶瓷涂层的方法
AT510943A1 (de) * 2011-01-13 2012-07-15 Miba Frictec Gmbh Reibmaterial

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051723A (ja) * 1991-06-21 1993-01-08 Nippon Piston Ring Co Ltd シンクロナイザーリング
JP2002188663A (ja) * 2000-12-21 2002-07-05 Taiheiyo Cement Corp ブレーキ部品
JP2003301201A (ja) * 2002-04-12 2003-10-24 Tocalo Co Ltd 複合サーメット粉末およびその製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2619469B2 (ja) * 1987-04-13 1997-06-11 昭和電工株式会社 スプリングリテーナ
JPH0645861B2 (ja) * 1988-07-22 1994-06-15 トヨタ自動車株式会社 摺動部材
JPH02129338A (ja) * 1988-11-08 1990-05-17 Mitsubishi Heavy Ind Ltd 耐摩耗アルミニウム合金
JPH03277762A (ja) * 1990-03-27 1991-12-09 Toyota Motor Corp 摺動部材

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051723A (ja) * 1991-06-21 1993-01-08 Nippon Piston Ring Co Ltd シンクロナイザーリング
JP2002188663A (ja) * 2000-12-21 2002-07-05 Taiheiyo Cement Corp ブレーキ部品
JP2003301201A (ja) * 2002-04-12 2003-10-24 Tocalo Co Ltd 複合サーメット粉末およびその製造方法

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