WO2008077776A3 - Verfahren zum thermischen entbindern eines durch spritzgiessen, extrudieren oder verpressen unter verwendung einer thermoplastischen masse hergestellten metallischen und/oder keramischen formkörpers - Google Patents
Verfahren zum thermischen entbindern eines durch spritzgiessen, extrudieren oder verpressen unter verwendung einer thermoplastischen masse hergestellten metallischen und/oder keramischen formkörpers Download PDFInfo
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- WO2008077776A3 WO2008077776A3 PCT/EP2007/063749 EP2007063749W WO2008077776A3 WO 2008077776 A3 WO2008077776 A3 WO 2008077776A3 EP 2007063749 W EP2007063749 W EP 2007063749W WO 2008077776 A3 WO2008077776 A3 WO 2008077776A3
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- extrusion
- compression
- produced
- injection molding
- thermoplastic material
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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- 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
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- 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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63408—Polyalkenes
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63472—Condensation polymers of aldehydes or ketones
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/638—Removal thereof
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- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
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- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6022—Injection moulding
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/604—Pressing at temperatures other than sintering temperatures
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Verfahren zum thermischen Entbindern eines durch Spritzgießen, Extrudieren oder Verpressen unter Verwendung einer thermoplastischen Masse hergestellten metallischen und/oder keramischen Formkörpers, enthaltend als Bindemittel mindestens ein Polyoxymethylenhomo- oder -copolymerisat, dadurch gekennzeichnet, dass man den Formkörper in einem Entbinderungsofen mit einem mindestens zweistufigen Temperatur/Zeit-Profil erhitzt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06126759.7 | 2006-12-21 | ||
EP06126759 | 2006-12-21 |
Publications (2)
Publication Number | Publication Date |
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WO2008077776A2 WO2008077776A2 (de) | 2008-07-03 |
WO2008077776A3 true WO2008077776A3 (de) | 2008-08-28 |
Family
ID=39027437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2007/063749 WO2008077776A2 (de) | 2006-12-21 | 2007-12-12 | Verfahren zum thermischen entbindern eines durch spritzgiessen, extrudieren oder verpressen unter verwendung einer thermoplastischen masse hergestellten metallischen und/oder keramischen formkörpers |
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WO (1) | WO2008077776A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2003325C2 (en) * | 2009-08-03 | 2011-02-04 | Syroko B V | Method for producing a powder injection moulded part. |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0114746A2 (de) * | 1983-01-21 | 1984-08-01 | Celanese Corporation | Bindemittel auf der Basis von Polyacetalen zum Spritzgiessen von Keramiken |
US5080846A (en) * | 1989-11-13 | 1992-01-14 | Hoechst Celanese Corp. | Process for removing polyacetal binder from molded ceramic greenbodies |
JPH06192706A (ja) * | 1992-12-25 | 1994-07-12 | Sanyo Chem Ind Ltd | 焼結性粉末成形体の脱脂方法 |
US5963775A (en) * | 1995-12-05 | 1999-10-05 | Smith International, Inc. | Pressure molded powder metal milled tooth rock bit cone |
JPH11310803A (ja) * | 1998-04-28 | 1999-11-09 | Yoshimitsu Sagawa | 金属粉末射出成形体用組成物、金属粉末射出成形体用バインダ、金属粉末射出成形体の脱脂方法及び金属粉末焼結成形体の製造方法 |
JP2004076153A (ja) * | 2002-06-18 | 2004-03-11 | Dowa Mining Co Ltd | 粉末成形用組成物およびこれを用いた成形体の脱脂方法 |
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2007
- 2007-12-12 WO PCT/EP2007/063749 patent/WO2008077776A2/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0114746A2 (de) * | 1983-01-21 | 1984-08-01 | Celanese Corporation | Bindemittel auf der Basis von Polyacetalen zum Spritzgiessen von Keramiken |
US5080846A (en) * | 1989-11-13 | 1992-01-14 | Hoechst Celanese Corp. | Process for removing polyacetal binder from molded ceramic greenbodies |
JPH06192706A (ja) * | 1992-12-25 | 1994-07-12 | Sanyo Chem Ind Ltd | 焼結性粉末成形体の脱脂方法 |
US5963775A (en) * | 1995-12-05 | 1999-10-05 | Smith International, Inc. | Pressure molded powder metal milled tooth rock bit cone |
JPH11310803A (ja) * | 1998-04-28 | 1999-11-09 | Yoshimitsu Sagawa | 金属粉末射出成形体用組成物、金属粉末射出成形体用バインダ、金属粉末射出成形体の脱脂方法及び金属粉末焼結成形体の製造方法 |
JP2004076153A (ja) * | 2002-06-18 | 2004-03-11 | Dowa Mining Co Ltd | 粉末成形用組成物およびこれを用いた成形体の脱脂方法 |
Non-Patent Citations (7)
Title |
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DATABASE WPI Week 199432, Derwent World Patents Index; AN 1994-260823, XP002486048 * |
DATABASE WPI Week 200004, Derwent World Patents Index; AN 2000-048072, XP002486047 * |
DATABASE WPI Week 200435, Derwent World Patents Index; AN 2004-367128, XP002486046 * |
KANKAWA YOSHIMITSU ET AL: "Injection molding of SUS316L powder with polyacetal polyethylene polymer-alloy polymer", FUNTAI OYOBI FUMMATSU YAKIN; FUNTAI OYOBI FUMMATSU YAKIN/JOURNAL OF THE JAPAN SOCIETY OF POWDER AND POWDER METALLURGY JUL 1996 FUNTAI FUNMATSU YAKIN KYOKAI, KYOTO, JAPAN, vol. 43, no. 7, July 1996 (1996-07-01), pages 840 - 845, XP008093668 * |
KANKAWA YOSHIMITSU: "Effects of polymer decomposition behavior on thermal debinding process in metal injection molding", MATER MANUF PROCESS; MATERIALS AND MANUFACTURING PROCESSES JUL 1997 MARCEL DEKKER INC, NEW YORK, NY, USA, vol. 12, no. 4, July 1997 (1997-07-01), pages 681 - 690, XP008093670 * |
PRABHAKARAN K ET AL: "Gelcasting of alumina using urea-formaldehyde II. Gelation and ceramic forming", CERAMICS INTERNATIONAL, ELSEVIER, AMSTERDAM, NL, vol. 26, no. 1, 1 January 2000 (2000-01-01), pages 67 - 71, XP004244412, ISSN: 0272-8842 * |
PRABHAKARAN K ET AL: "Gelcasting of alumina using urea-formaldehyde: III. Machinable green bodies by copolymerization with acrylic acid", CERAM INT; CERAMICS INTERNATIONAL 2001 ELSEVIER SCIENCE LTD, EXETER, ENGL, vol. 27, no. 2, 2001, pages 185 - 189, XP002486045 * |
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WO2008077776A2 (de) | 2008-07-03 |
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