JPS59197307A - 圧延機用ロ−ル - Google Patents

圧延機用ロ−ル

Info

Publication number
JPS59197307A
JPS59197307A JP58069918A JP6991883A JPS59197307A JP S59197307 A JPS59197307 A JP S59197307A JP 58069918 A JP58069918 A JP 58069918A JP 6991883 A JP6991883 A JP 6991883A JP S59197307 A JPS59197307 A JP S59197307A
Authority
JP
Japan
Prior art keywords
roll
sintered body
rolling mill
alumina
zirconia
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP58069918A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0448524B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Masahisa Sofue
祖父江　昌久
Nobusuke Okada
岡田　亘右
Kimihiko Akahori
赤堀　公彦
Keiichi Kuniya
国谷　啓一
Toshimi Sasaki
佐々木　敏美
Toshiyuki Kajiwara
利幸 梶原
Tomoaki Kimura
智明 木村
Mitsuo Nihei
充雄 二瓶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP58069918A priority Critical patent/JPS59197307A/ja
Priority to EP84302576A priority patent/EP0123490B1/en
Priority to DE8484302576T priority patent/DE3465899D1/de
Priority to KR1019840002035A priority patent/KR910001542B1/ko
Publication of JPS59197307A publication Critical patent/JPS59197307A/ja
Priority to US07/048,907 priority patent/US4839949A/en
Priority to US07/360,219 priority patent/US4941251A/en
Publication of JPH0448524B2 publication Critical patent/JPH0448524B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/486—Fine ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/597—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon oxynitride, e.g. SIALONS

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Products (AREA)
JP58069918A 1983-04-22 1983-04-22 圧延機用ロ−ル Granted JPS59197307A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP58069918A JPS59197307A (ja) 1983-04-22 1983-04-22 圧延機用ロ−ル
EP84302576A EP0123490B1 (en) 1983-04-22 1984-04-16 Rolls for rolling mills
DE8484302576T DE3465899D1 (en) 1983-04-22 1984-04-16 Rolls for rolling mills
KR1019840002035A KR910001542B1 (ko) 1983-04-22 1984-04-18 압연기용 롤
US07/048,907 US4839949A (en) 1983-04-22 1987-05-12 Rollers for rolling mills
US07/360,219 US4941251A (en) 1983-04-22 1989-06-02 Rollers for rolling mills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58069918A JPS59197307A (ja) 1983-04-22 1983-04-22 圧延機用ロ−ル

Publications (2)

Publication Number Publication Date
JPS59197307A true JPS59197307A (ja) 1984-11-08
JPH0448524B2 JPH0448524B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-07

Family

ID=13416547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58069918A Granted JPS59197307A (ja) 1983-04-22 1983-04-22 圧延機用ロ−ル

Country Status (5)

Country Link
US (2) US4839949A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0123490B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS59197307A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR910001542B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3465899D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6219042A (ja) * 1985-07-18 1987-01-27 株式会社　笹森産業 麺材料のための圧延装置
JPS62101304A (ja) * 1985-10-26 1987-05-11 Nippon Light Metal Co Ltd 平滑な表面を有する金属圧延材の製造方法
JPS6445755A (en) * 1987-08-12 1989-02-20 Hitachi Ltd Ceramic dull roll for rolling, its production and rolling mill using said roll
JPH0220602A (ja) * 1988-07-09 1990-01-24 Denki Kagaku Kogyo Kk セラミック圧延ロール
JPH04100401U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1991-01-31 1992-08-31
JPH06277733A (ja) * 1993-03-31 1994-10-04 Ngk Insulators Ltd 熱間圧延セラミックスローラ及びロール
JP2009208125A (ja) * 2008-03-05 2009-09-17 Nippon Steel Corp 調質圧延機
JP2010243161A (ja) * 2009-04-01 2010-10-28 Seiko Epson Corp 透光性部材の製造方法、透光性部材、および時計

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924688A (en) * 1986-08-11 1990-05-15 Copper Refineries Pty. Limited Mill roll
FR2608946A1 (fr) * 1986-12-31 1988-07-01 Clecim Sa Cylindres actifs de cage de planage
BR8806569A (pt) * 1987-03-24 1989-10-17 Hitachi Metals Ltd Cilindro de laminacao composto resistente ao desgaste e processo de produzir o mesmo
US4876875A (en) * 1987-12-04 1989-10-31 Coors Porcelain Company Supported ceramic guide roller
FI83895C (fi) * 1988-04-13 1991-09-10 Valmet Paper Machinery Inc Foerfarande och anordning vid pressbehandling av en pappersbana.
FI80097B (fi) * 1988-04-28 1989-12-29 Valmet Paper Machinery Inc Vals i presspartiet av en pappersmaskin och foerfarande foer framstaellning av denna.
US5092393A (en) * 1989-03-14 1992-03-03 Nippon Steel Corporation Process for producing cold-rolled strips and sheets of austenitic stainless steel
DE3915508A1 (de) * 1989-05-12 1990-11-15 Feldmuehle Ag Walze zur druckbehandlung von warenbahnen
FI86566C (fi) * 1989-10-27 1992-09-10 Valmet Paper Machinery Inc Vals foer anvaendning vid pappersframstaellning och foerfarande foer framstaellning av valsen.
US5242363A (en) * 1990-07-27 1993-09-07 Praxair S.T. Technology, Inc. Water cooled rolls for cooling steel sheets
ZA934072B (en) 1992-06-19 1994-01-19 Commw Scient Ind Res Org Rolls for metal shaping
US5769986A (en) * 1996-08-13 1998-06-23 Northrop Grumman Corporation Stress-free bonding of dissimilar materials
US5805968A (en) * 1997-03-21 1998-09-08 Eastman Kodak Company Ceramic rollers
US6374494B1 (en) * 1997-03-21 2002-04-23 Kawasaki Steel Corporation Compound roll for thin cold rolled steel strip and method of manufacturing same
US5871878A (en) * 1997-03-21 1999-02-16 Eastman Kodak Company Toner offset preventing oils for zirconia ceramic and its composites rollers
US5991591A (en) * 1998-03-05 1999-11-23 Eastman Kodak Company Fuser using ceramic roller
US6318614B1 (en) * 1999-06-01 2001-11-20 Ceramic Engineering Consulting, Inc. Ceramic wire feed rollers
US6299733B1 (en) * 2000-06-07 2001-10-09 Voith Sulzer Paper Technology North America, Inc. Roll with composite material roll shell and head in a paper-making machine
EP1166906A1 (en) * 2000-06-23 2002-01-02 Alcan International Limited A work roll for and a method of producing metal foil
US7350387B1 (en) 2004-01-23 2008-04-01 Lisk Rodger A Tooling assembly
DE102004027564A1 (de) * 2004-06-04 2005-12-22 Joint Solar Silicon Gmbh & Co. Kg Verdichtungs-Vorrichtung
US20060081675A1 (en) * 2004-10-14 2006-04-20 Lincoln Global, Inc. Coating wire drive parts
EP2087984B1 (de) * 2008-02-05 2010-05-12 Texmag GmbH Vertriebsgesellschaft Walze zum Ausüben von Anpressdruck auf Materialbahnen
JP5326407B2 (ja) * 2008-07-31 2013-10-30 セイコーエプソン株式会社 時計用カバーガラス、および時計
JP2010231172A (ja) * 2009-03-04 2010-10-14 Seiko Epson Corp 光学物品およびその製造方法
US20100243963A1 (en) * 2009-03-31 2010-09-30 Integrated Photovoltaics, Incorporated Doping and milling of granular silicon
JP2012032690A (ja) 2010-08-02 2012-02-16 Seiko Epson Corp 光学物品およびその製造方法
EP2570508A1 (en) 2011-09-19 2013-03-20 Sandvik Intellectual Property AB A roll for hot rolling
JP6445858B2 (ja) * 2014-12-12 2018-12-26 住友電工焼結合金株式会社 焼結部品の製造方法、及びドリル
CN111356542B (zh) * 2018-01-31 2022-05-31 日立金属株式会社 复合硬质合金辊
WO2021192131A1 (ja) * 2020-03-26 2021-09-30 オーエスジー株式会社 転造ダイス及びその製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4935204A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-08-07 1974-04-01
JPS5073906A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-10-31 1975-06-18
JPS50110961A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-02-13 1975-09-01
JPS54117361A (en) * 1978-03-06 1979-09-12 Yoshida Keiichiro Supporting of sintered hard ring roller
JPS5520962A (en) * 1978-08-03 1980-02-14 Shuichi Sakai Rolling roll

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005315A (en) * 1933-12-22 1935-06-18 American Sheet & Tin Plate Method for rolling sheet metal
US3143012A (en) * 1960-12-21 1964-08-04 Loire Atel Forges Hooped assembly
US3318124A (en) * 1964-12-10 1967-05-09 Westinghouse Electric Corp Workpiece shape control
US3577619A (en) * 1969-05-12 1971-05-04 Sandvikens Jernverks Ab Method of manufacturing composite hardmetal rolls
SE371756B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-07-07 1974-12-02 Morgaardshammar Ab
DE2449874A1 (de) * 1974-10-21 1976-04-29 Hufnagl Walter Rolle zum kaltverformen von walzdraht
DE2805292C2 (de) * 1977-09-28 1982-03-11 Toshiba Ceramics Co., Ltd., Tokyo Verfahren zur Herstellung eines Sinterkörpers
JPS5547269A (en) * 1978-09-27 1980-04-03 Kagaku Gijutsucho Mukizai Manufacture of thialon sintered body
DE2851584B2 (de) * 1978-11-29 1980-09-04 Fried. Krupp Gmbh, 4300 Essen Verbundkörper
DE2944582A1 (de) * 1979-11-05 1981-05-07 Hans Clemens 6605 Friedrichsthal Kugler Verfahren zur herstellung von keramischen rohrfoermigen tragrollen fuer rollenherdoefen
DE3141590C2 (de) * 1980-10-20 1985-01-03 Kobe Steel, Ltd., Kobe, Hyogo Verfahren zur Herstellung von hochdichtem gesintertem Siliziumnitrid
JPS59207873A (ja) * 1983-05-10 1984-11-26 ティーディーケイ株式会社 高密度炭化ケイ素焼結体の製造方法
JPS644057A (en) * 1987-06-26 1989-01-09 Hitachi Ltd Semiconductor device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4935204A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-08-07 1974-04-01
JPS5073906A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-10-31 1975-06-18
JPS50110961A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-02-13 1975-09-01
JPS54117361A (en) * 1978-03-06 1979-09-12 Yoshida Keiichiro Supporting of sintered hard ring roller
JPS5520962A (en) * 1978-08-03 1980-02-14 Shuichi Sakai Rolling roll

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6219042A (ja) * 1985-07-18 1987-01-27 株式会社　笹森産業 麺材料のための圧延装置
JPS62101304A (ja) * 1985-10-26 1987-05-11 Nippon Light Metal Co Ltd 平滑な表面を有する金属圧延材の製造方法
JPS6445755A (en) * 1987-08-12 1989-02-20 Hitachi Ltd Ceramic dull roll for rolling, its production and rolling mill using said roll
JPH0220602A (ja) * 1988-07-09 1990-01-24 Denki Kagaku Kogyo Kk セラミック圧延ロール
JPH04100401U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1991-01-31 1992-08-31
JPH06277733A (ja) * 1993-03-31 1994-10-04 Ngk Insulators Ltd 熱間圧延セラミックスローラ及びロール
JP2009208125A (ja) * 2008-03-05 2009-09-17 Nippon Steel Corp 調質圧延機
JP2010243161A (ja) * 2009-04-01 2010-10-28 Seiko Epson Corp 透光性部材の製造方法、透光性部材、および時計

Also Published As

Publication number Publication date
DE3465899D1 (en) 1987-10-15
US4839949A (en) 1989-06-20
KR840008427A (ko) 1984-12-15
KR910001542B1 (ko) 1991-03-15
US4941251A (en) 1990-07-17
EP0123490A1 (en) 1984-10-31
JPH0448524B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-07
EP0123490B1 (en) 1987-09-09

Similar Documents

Publication Publication Date Title
JPS59197307A (ja) 圧延機用ロ−ル
US6767648B2 (en) Copper-based, sintered sliding material and method of producing same
US6596671B2 (en) Non-plated aluminum based bearing alloy with performance-enhanced interlayer
US6374494B1 (en) Compound roll for thin cold rolled steel strip and method of manufacturing same
US5406825A (en) Forging die
JP3649361B2 (ja) 超硬合金製複合ロール
JP2004148321A (ja) 熱間圧延用複合ロール及びその製造方法並びにそれを用いた熱間圧延方法
US6833339B2 (en) Non-plated aluminum based bearing alloy with performance-enhanced interlayer
JPS5921413A (ja) 圧延ロ−ル
JP2543933B2 (ja) 金属箔の製造方法
JP3395715B2 (ja) 熱間継目無管製造用マンドレルバーおよび熱間継目無管の製造方法
JPS6087910A (ja) 圧延用ロ−ル
JP2500854B2 (ja) 圧延ロ―ル
McColl et al. Fretting wear of a fine particulate reinforced aluminium alloy matrix composite against a medium carbon steel
JP3246171B2 (ja) 熱間圧延方法
JP3919082B2 (ja) 超硬合金製圧延用複合ロール
JP3188643B2 (ja) ステンレス鋼冷間圧延用複合ロール
JP2004243341A (ja) 超硬合金製圧延用複合ロール
JP2004268140A (ja) 板圧延用超硬合金製複合ロール
JPH0417724B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2001047111A (ja) 超硬合金製複合ロール
JPH0679724B2 (ja) 圧延用ロ−ル
JPS63160708A (ja) 圧延用ワ−クロ−ル
JPH1147807A (ja) 金属帯板圧延用複合ロール
JPS63238231A (ja) Ｃｕ系合金製変速機用同期リング