DE69326562T2 - Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug - Google Patents

Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug

Info

Publication number
DE69326562T2
DE69326562T2 DE69326562T DE69326562T DE69326562T2 DE 69326562 T2 DE69326562 T2 DE 69326562T2 DE 69326562 T DE69326562 T DE 69326562T DE 69326562 T DE69326562 T DE 69326562T DE 69326562 T2 DE69326562 T2 DE 69326562T2
Authority
DE
Germany
Prior art keywords
silicon nitride
cutting tool
nitride ceramics
tool made
ceramic
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.)
Expired - Lifetime
Application number
DE69326562T
Other languages
English (en)
Other versions
DE69326562D1 (de
Inventor
Pankaj Mehrotra
Robert Nixon
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.)
Kennametal Inc
Original Assignee
Kennametal Inc
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 Kennametal Inc filed Critical Kennametal Inc
Application granted granted Critical
Publication of DE69326562D1 publication Critical patent/DE69326562D1/de
Publication of DE69326562T2 publication Critical patent/DE69326562T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/593—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 obtained by pressure sintering
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
DE69326562T 1993-01-15 1993-12-07 Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug Expired - Lifetime DE69326562T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/004,022 US5382273A (en) 1993-01-15 1993-01-15 Silicon nitride ceramic and cutting tool made thereof
PCT/US1993/011903 WO1994016023A1 (en) 1993-01-15 1993-12-07 Silicon nitride ceramic and cutting tool made thereof

Publications (2)

Publication Number Publication Date
DE69326562D1 DE69326562D1 (de) 1999-10-28
DE69326562T2 true DE69326562T2 (de) 2000-02-24

Family

ID=21708749

Family Applications (2)

Application Number Title Priority Date Filing Date
DE0679174T Pending DE679174T1 (de) 1993-01-15 1993-12-07 Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug.
DE69326562T Expired - Lifetime DE69326562T2 (de) 1993-01-15 1993-12-07 Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE0679174T Pending DE679174T1 (de) 1993-01-15 1993-12-07 Siliziumnitridkeramik und daraus hergestelltes schneidwerkzeug.

Country Status (11)

Country Link
US (2) US5382273A (de)
EP (2) EP0679174B1 (de)
JP (1) JP2997899B2 (de)
KR (1) KR100199460B1 (de)
AT (1) ATE184867T1 (de)
AU (1) AU671349B2 (de)
CA (1) CA2149658C (de)
DE (2) DE679174T1 (de)
ES (2) ES2133266T1 (de)
RU (1) RU2110369C1 (de)
WO (1) WO1994016023A1 (de)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5571760A (en) * 1993-08-27 1996-11-05 Saint-Gobain/Norton Industrial Ceramics Corporation Silicon nitride having a high tensile strength
US5759481A (en) * 1994-10-18 1998-06-02 Saint-Gobain/Norton Industrial Ceramics Corp. Silicon nitride having a high tensile strength
JP3588162B2 (ja) * 1995-05-31 2004-11-10 京セラ株式会社 窒化珪素質切削工具およびその製造方法
US5921725A (en) * 1996-03-13 1999-07-13 Kashiwagi; Tetsuya Sintered silicon nitride articles for tools and method of preparation
SE513938C2 (sv) * 1996-07-19 2000-11-27 Sandvik Ab Skärverktygsmaterial av kiselnitrid
US5906677A (en) * 1997-05-05 1999-05-25 Dudley; Jesse R. Electrostatic supercharger screen
EP0926110B1 (de) * 1997-12-26 2002-04-24 NGK Spark Plug Co. Ltd. Verfahren zur Herstellung von Sinterkörper aus Siliziumnitrid und aus dem Sinterkörper gebildeter Schneideinsatz
KR19990066754A (ko) 1997-12-26 1999-08-16 오카무라 가네오 질화규소 소결체, 질화규소 소결체의 제조방법및 질화규소소결체로 제조된 절삭공구
US6471734B1 (en) * 1998-07-09 2002-10-29 Kennametal Pc Inc. Ceramic and process for the continuous sintering thereof
JP2000271807A (ja) * 1999-03-24 2000-10-03 Ngk Spark Plug Co Ltd 切削工具及び耐摩耗材
US6391812B1 (en) * 1999-06-23 2002-05-21 Ngk Insulators, Ltd. Silicon nitride sintered body and method of producing the same
US6610113B1 (en) * 1999-09-09 2003-08-26 Kennametal Pc Inc. Process for heat treating ceramics and articles of manufacture made thereby
CA2422179C (en) * 2000-10-02 2008-07-08 Indexable Cutting Tools Of Canada Limited Siaion material and cutting tools made thereof
JP4641609B2 (ja) * 2000-10-18 2011-03-02 日本碍子株式会社 耐蝕性部材
SE520252C2 (sv) * 2000-11-22 2003-06-17 Sandvik Ab Sätt att fräsa ett material bestående av aluminium och perlitiskt grått gjutjärn
US6620756B2 (en) 2001-06-20 2003-09-16 Ues, Inc. Ceramic matrix composite cutting tool material
US6858333B2 (en) 2002-10-09 2005-02-22 Kennametal Inc. Tool with wear resistant low friction coating and method of making the same
TWM243339U (en) * 2003-07-11 2004-09-11 Hon Hai Prec Ind Co Ltd Ceramic cutting tool
US20050186044A1 (en) * 2004-02-25 2005-08-25 Hegde Parag L. Process for machining
US20050211475A1 (en) 2004-04-28 2005-09-29 Mirchandani Prakash K Earth-boring bits
US9428822B2 (en) 2004-04-28 2016-08-30 Baker Hughes Incorporated Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components
US20060024140A1 (en) * 2004-07-30 2006-02-02 Wolff Edward C Removable tap chasers and tap systems including the same
JP2006164679A (ja) * 2004-12-06 2006-06-22 Hitachi Ltd 画像表示装置
EP2402098B2 (de) 2004-12-22 2021-03-03 Ngk Spark Plug Co., Ltd. Sialon-Einsatz und damit ausgestattetes Schneidewerkzeug
JP2006298691A (ja) * 2005-04-20 2006-11-02 Hitachi Ltd 平面型画像表示装置
US8637127B2 (en) 2005-06-27 2014-01-28 Kennametal Inc. Composite article with coolant channels and tool fabrication method
US7687156B2 (en) 2005-08-18 2010-03-30 Tdy Industries, Inc. Composite cutting inserts and methods of making the same
CA2648181C (en) 2006-04-27 2014-02-18 Tdy Industries, Inc. Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
BRPI0717332A2 (pt) 2006-10-25 2013-10-29 Tdy Ind Inc Artigos tendo resistência aperfeiçoada à rachadura térmica
US9101985B2 (en) 2007-01-18 2015-08-11 Kennametal Inc. Cutting insert assembly and components thereof
US7963729B2 (en) 2007-01-18 2011-06-21 Kennametal Inc. Milling cutter and milling insert with coolant delivery
US7625157B2 (en) * 2007-01-18 2009-12-01 Kennametal Inc. Milling cutter and milling insert with coolant delivery
US8328471B2 (en) 2007-01-18 2012-12-11 Kennametal Inc. Cutting insert with internal coolant delivery and cutting assembly using the same
US8439608B2 (en) 2007-01-18 2013-05-14 Kennametal Inc. Shim for a cutting insert and cutting insert-shim assembly with internal coolant delivery
US20080175679A1 (en) 2007-01-18 2008-07-24 Paul Dehnhardt Prichard Milling cutter and milling insert with core and coolant delivery
US8454274B2 (en) * 2007-01-18 2013-06-04 Kennametal Inc. Cutting inserts
US8727673B2 (en) 2007-01-18 2014-05-20 Kennametal Inc. Cutting insert with internal coolant delivery and surface feature for enhanced coolant flow
US7883299B2 (en) 2007-01-18 2011-02-08 Kennametal Inc. Metal cutting system for effective coolant delivery
US8512882B2 (en) 2007-02-19 2013-08-20 TDY Industries, LLC Carbide cutting insert
US20080196319A1 (en) * 2007-02-20 2008-08-21 Advanced Ceramic Manufacturing, Llc Ceramic round tools for the machining of composite materials
JP5031602B2 (ja) * 2007-02-23 2012-09-19 京セラ株式会社 窒化珪素質焼結体および切削工具ならびに切削加工装置、切削方法
CN104692806B (zh) * 2007-03-15 2017-04-26 株式会社东芝 滑动部件
US7846551B2 (en) 2007-03-16 2010-12-07 Tdy Industries, Inc. Composite articles
CN101646518B (zh) 2007-03-22 2011-08-03 日本特殊陶业株式会社 刀片与切削工具
US8557406B2 (en) 2007-06-28 2013-10-15 Kennametal Inc. Coated PCBN cutting insert, coated PCBN cutting tool using such coated PCBN cutting insert, and method for making the same
US8475944B2 (en) 2007-06-28 2013-07-02 Kennametal Inc. Coated ceramic cutting insert and method for making the same
CN101848782B (zh) 2008-03-26 2012-08-08 京瓷株式会社 切削工具
EP2266935B1 (de) * 2008-04-18 2018-01-03 Kabushiki Kaisha Toshiba Verschleissfestes element und verschleissfeste vorrichtung
US8221517B2 (en) 2008-06-02 2012-07-17 TDY Industries, LLC Cemented carbide—metallic alloy composites
US8790439B2 (en) 2008-06-02 2014-07-29 Kennametal Inc. Composite sintered powder metal articles
US8025112B2 (en) 2008-08-22 2011-09-27 Tdy Industries, Inc. Earth-boring bits and other parts including cemented carbide
US8322465B2 (en) 2008-08-22 2012-12-04 TDY Industries, LLC Earth-boring bit parts including hybrid cemented carbides and methods of making the same
US7955032B2 (en) 2009-01-06 2011-06-07 Kennametal Inc. Cutting insert with coolant delivery and method of making the cutting insert
US8272816B2 (en) 2009-05-12 2012-09-25 TDY Industries, LLC Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US8201610B2 (en) 2009-06-05 2012-06-19 Baker Hughes Incorporated Methods for manufacturing downhole tools and downhole tool parts
US8308096B2 (en) 2009-07-14 2012-11-13 TDY Industries, LLC Reinforced roll and method of making same
US8440314B2 (en) 2009-08-25 2013-05-14 TDY Industries, LLC Coated cutting tools having a platinum group metal concentration gradient and related processes
US9643236B2 (en) 2009-11-11 2017-05-09 Landis Solutions Llc Thread rolling die and method of making same
MX2012013454A (es) 2010-05-20 2013-05-01 Baker Hughes Inc Metodos para formar al menos una porcion de herramientas para perforar la tierra.
MX2012013455A (es) 2010-05-20 2013-05-01 Baker Hughes Inc Metodos para formar al menos una porcion de herramientas para perforar la tierra y articulos formados por tales metodos.
WO2011146752A2 (en) 2010-05-20 2011-11-24 Baker Hughes Incorporated Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
US8734062B2 (en) 2010-09-02 2014-05-27 Kennametal Inc. Cutting insert assembly and components thereof
US8827599B2 (en) 2010-09-02 2014-09-09 Kennametal Inc. Cutting insert assembly and components thereof
US8507082B2 (en) 2011-03-25 2013-08-13 Kennametal Inc. CVD coated polycrystalline c-BN cutting tools
US8800848B2 (en) 2011-08-31 2014-08-12 Kennametal Inc. Methods of forming wear resistant layers on metallic surfaces
US9016406B2 (en) 2011-09-22 2015-04-28 Kennametal Inc. Cutting inserts for earth-boring bits
EP2940178A4 (de) * 2012-12-26 2016-08-17 Wu Shanghua Verfahren zur herstellung einer al2o2-beschichtung auf einer oberfläche eines silicium-nitrid-schneidwerkzeugs mittels pvd und verbundstoffbeschichtungsverfahren
US9028953B2 (en) 2013-01-11 2015-05-12 Kennametal Inc. CVD coated polycrystalline c-BN cutting tools
CN108300993A (zh) * 2018-01-26 2018-07-20 东南大学 氮化硅-硬质合金梯度涂层刀具及其制备方法
US20190247926A1 (en) 2018-02-14 2019-08-15 Kennametal Inc. Cutting insert with internal coolant passageways

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836374A (en) * 1972-01-20 1974-09-17 Norton Co Hot pressed silicon nitride
JPS523647B2 (de) * 1972-10-24 1977-01-29
US3992497A (en) * 1973-05-18 1976-11-16 Westinghouse Electric Corporation Pressureless sintering silicon nitride powders
US4218257A (en) * 1975-04-07 1980-08-19 Ngk Insulators, Ltd. Sintered silicon nitride body and a method of producing the same
US4280973A (en) * 1979-11-14 1981-07-28 Ford Motor Company Process for producing Si3 N4 base articles by the cold press sinter method
US4492765A (en) * 1980-08-15 1985-01-08 Gte Products Corporation Si3 N4 ceramic articles having lower density outer layer, and method
US4356136A (en) * 1980-08-29 1982-10-26 Ford Motor Company Method of densifying an article formed of reaction bonded silicon nitride
US5445776A (en) * 1980-10-20 1995-08-29 Kabushiki Kaisha Kobe Seiko Sho Method for producing high density sintered silicon nitride (Si3 N.sub.4
US4409003A (en) * 1982-05-20 1983-10-11 Gte Laboratories Incorporated Carbonitride coated silicon nitride cutting tools
US4848984A (en) * 1982-09-30 1989-07-18 Ceradyne, Inc. Method of making reaction bonded/hot pressed Si3 N4 for use as a cutting tool
JPS6054976A (ja) * 1983-09-02 1985-03-29 日本碍子株式会社 窒化珪素焼結体
US4628039A (en) * 1984-03-06 1986-12-09 Kyocera Corporation Sintered silicon nitride body
US4603116A (en) * 1984-04-09 1986-07-29 Gte Laboratories Incorporated Silicon nitride based ceramics and method
EP0187737B1 (de) * 1984-04-13 1989-06-28 Ford-Werke Aktiengesellschaft VERFAHREN ZUM MASCHINENSCHNEIDEN VON SILIZIUMMETALLTEILCHEN MIT Si3N4
US4650498A (en) * 1984-12-14 1987-03-17 Gte Laboratories Incorporated Abrasion resistant silicon nitride based articles
US4640693A (en) * 1985-04-15 1987-02-03 Gte Valeron Coated silicon nitride cutting tool and process for making
US4935388A (en) * 1985-04-29 1990-06-19 Norton Company Rolling contact bearings, material for bearing surfaces, and process therefor
JPS61266359A (ja) * 1985-05-20 1986-11-26 日本碍子株式会社 窒化珪素焼結体の製造法
US4607017A (en) * 1985-06-20 1986-08-19 Gte Products Corporation Silicon nitride based cutting tool
US4652276A (en) * 1986-03-10 1987-03-24 Gte Valeron Corporation High toughness silicon nitride cutting tools
DE3709137A1 (de) * 1986-03-28 1987-10-15 Ngk Insulators Ltd Siliciumnitrid-sinterkoerper, verfahren zu ihrer herstellung und siliciumnitridpulver
DE3617488A1 (de) * 1986-05-24 1987-11-26 Bayer Ag Sinterfaehige si(pfeil abwaerts)3(pfeil abwaerts)n(pfeil abwaerts)4(pfeil abwaerts)-pulver mit sinteradditiven und verfahren zu ihrer herstellung
US4904624A (en) * 1986-10-28 1990-02-27 Norton Company Silicon nitride with improved high temperature strength
JP2563392B2 (ja) * 1986-11-21 1996-12-11 株式会社東芝 窒化ケイ素系セラミックスおよびその製造方法
JPH0774103B2 (ja) * 1986-12-27 1995-08-09 日本碍子株式会社 高硬度窒化珪素焼結体
US4943543A (en) * 1987-04-30 1990-07-24 Sandvik Aktiebolag Sintered ceramic materials
US4956315A (en) * 1987-09-02 1990-09-11 Kennametal Inc. Whisker reinforced ceramics and a method of clad/hot isostatic pressing same
JP2512061B2 (ja) * 1987-11-26 1996-07-03 日本碍子株式会社 均質窒化珪素焼結体およびその製造方法
US5021372A (en) * 1988-01-27 1991-06-04 The Dow Chemical Company Method of preparing a self-reinforced silicon nitride ceramic of high fracture toughness
US4883776A (en) * 1988-01-27 1989-11-28 The Dow Chemical Company Self-reinforced silicon nitride ceramic of high fracture toughness and a method of preparing the same
US4919689A (en) * 1988-01-27 1990-04-24 The Dow Chemical Company Self-reinforced silicon nitride ceramic of high fracture toughness
DE68910363T3 (de) * 1988-04-07 1998-02-26 Toyoda Chuo Kenkyusho Kk Siliciumnitrid-Sinterkörper.
JP2524201B2 (ja) * 1988-08-22 1996-08-14 日本特殊陶業株式会社 窒化珪素質焼結体及びその製造方法
JPH0761903B2 (ja) * 1988-08-25 1995-07-05 本田技研工業株式会社 高温高強度窒化珪素質焼結体及びその製造方法
US5194201A (en) * 1988-12-27 1993-03-16 Ngk Insulators, Ltd. Method of manufacturing high density silicon nitride sintered bodies
US5449649A (en) * 1989-01-17 1995-09-12 Li; Chien-Wei Monolithic silicon nitride having high fracture toughness
JPH02229766A (ja) * 1989-03-01 1990-09-12 Ngk Insulators Ltd 窒化珪素焼結体
JP2697759B2 (ja) * 1989-03-17 1998-01-14 日本碍子株式会社 窒化珪素焼結体およびその製造法
EP0484916A3 (en) * 1990-11-07 1993-06-02 Sumitomo Electric Industries, Limited Silicon nitride sintered body
US5401450A (en) * 1991-12-20 1995-03-28 Nissan Motor Co., Ltd β-silicon nitride sintered body and method of producing same

Also Published As

Publication number Publication date
ATE184867T1 (de) 1999-10-15
AU5846994A (en) 1994-08-15
EP0679174B1 (de) 1999-09-22
ES2079334T1 (es) 1996-01-16
KR960700313A (ko) 1996-01-19
AU671349B2 (en) 1996-08-22
ES2079334T3 (es) 1999-12-01
EP0916633A1 (de) 1999-05-19
RU2110369C1 (ru) 1998-05-10
JP2997899B2 (ja) 2000-01-11
ES2133266T1 (es) 1999-09-16
KR100199460B1 (ko) 1999-06-15
US5525134A (en) 1996-06-11
DE679174T1 (de) 1996-09-12
US5382273A (en) 1995-01-17
DE69326562D1 (de) 1999-10-28
EP0679174A4 (de) 1997-06-04
EP0679174A1 (de) 1995-11-02
WO1994016023A1 (en) 1994-07-21
CA2149658C (en) 2000-09-05
JPH08503664A (ja) 1996-04-23

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