GB1516079A - Manufacture of parts from particulate material - Google Patents

Manufacture of parts from particulate material

Info

Publication number
GB1516079A
GB1516079A GB13283/77A GB1328377A GB1516079A GB 1516079 A GB1516079 A GB 1516079A GB 13283/77 A GB13283/77 A GB 13283/77A GB 1328377 A GB1328377 A GB 1328377A GB 1516079 A GB1516079 A GB 1516079A
Authority
GB
United Kingdom
Prior art keywords
binder
moulding
solvent
unfired
melting point
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
Application number
GB13283/77A
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.)
Parmatech Corp
Original Assignee
Parmatech Corp
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
Priority claimed from US05/676,194 external-priority patent/US4197118A/en
Application filed by Parmatech Corp filed Critical Parmatech Corp
Publication of GB1516079A publication Critical patent/GB1516079A/en
Priority to HK16380A priority Critical patent/HK16380A/en
Expired 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
    • C04B35/622—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
    • 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
    • B22F3/1025—Removal of binder or filler not by heating only
    • 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
    • C04B33/00—Clay-wares
    • 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
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • 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
    • C04B35/622—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
    • 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
    • C04B35/622—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
    • 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
    • C04B35/622—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
    • C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
    • 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
    • C04B35/622—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
    • C04B35/63432—Polystyrenes
    • 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
    • C04B35/622—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
    • C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]
    • 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
    • C04B35/622—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
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

To remove binder from an unfired moulding before sintering, the unfired moulding is initially heated to a temperature above the melting point of the binder, for liquifying the binder, and introduced at this temperature into a solvent for the binder in the vapour phase, which solvent is held at a temperature slightly above the melting point of the binder. The solvent vapour then slowly penetrates into the unfired moulding and dissolves the binder contained therein in such a way that no excessive stresses due to expansion of the binder are generated in the interior of the moulding, until the combination of solvent and binder virtually ceases to exude out of the moulding. Subsequently, the moulding is introduced at a temperature above the melting point of the binder into a bath of the solvent, in order to remove binder remaining in the moulding from the latter.
GB13283/77A 1976-04-12 1977-03-30 Manufacture of parts from particulate material Expired GB1516079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HK16380A HK16380A (en) 1977-03-30 1980-03-27 Manufacture of parts from particulate material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/676,194 US4197118A (en) 1972-06-14 1976-04-12 Manufacture of parts from particulate material

Publications (1)

Publication Number Publication Date
GB1516079A true GB1516079A (en) 1978-06-28

Family

ID=24713591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13283/77A Expired GB1516079A (en) 1976-04-12 1977-03-30 Manufacture of parts from particulate material

Country Status (6)

Country Link
JP (1) JPS52145414A (en)
CH (1) CH632225A5 (en)
DE (1) DE2715563C2 (en)
FR (1) FR2403313A1 (en)
GB (1) GB1516079A (en)
MX (1) MX4540E (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032403A1 (en) * 1980-01-14 1981-07-22 WITEC Cayman Patents Ltd. Manufacture of parts from particulate material
EP0032405A1 (en) * 1980-01-14 1981-07-22 WITEC Cayman Patents Ltd. Method of making inelastically compressible ductile particulate material article and subsequent working thereof
US4534936A (en) * 1982-05-04 1985-08-13 Carlstroem Elis Method for removal of organic binding agents from molded bodies
EP0234420A2 (en) * 1986-02-14 1987-09-02 Fine Particle Technology Corp. Method for rapidly removing binder from a green body composed of metal, cermet or ceramic
US5877270A (en) * 1994-03-14 1999-03-02 Kabushiki Kaisha Komatsu Seisakusho Water solvent extraction degreasing method and molded products produced therewith

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927743B2 (en) * 1979-02-28 1984-07-07 旭硝子株式会社 Processing method for ceramic molded products
JPS61296501A (en) * 1985-06-22 1986-12-27 Audio Technica Corp Pickup for record player
DE3907022A1 (en) * 1988-03-11 1989-09-21 Krupp Gmbh Process for producing sintered parts from fine metal or ceramic powders
US5059388A (en) * 1988-10-06 1991-10-22 Sumitomo Cement Co., Ltd. Process for manufacturing sintered bodies
JPH0639347B2 (en) * 1989-08-08 1994-05-25 日本鋼管株式会社 Method for degreasing molded body of metal or ceramics
JPH0393673A (en) * 1989-09-07 1991-04-18 Nkk Corp Device for removing dispersion medium of molded article of metal or ceramics
US5194203A (en) * 1991-02-28 1993-03-16 Mitsui Mining & Smelting Co., Ltd. Methods of removing binder from powder moldings

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779242A (en) * 1952-08-11 1957-07-17 Standard Telephones Cables Ltd Improvements in or relating to the formation of moulded articles from sinterable materials
US2939199A (en) * 1952-08-11 1960-06-07 Int Standard Electric Corp Formation of ceramic mouldings
FR1090014A (en) * 1952-08-11 1955-03-25 Int Standard Electric Corp Methods and process for molding materials, especially ceramic parts
GB827230A (en) * 1957-02-22 1960-02-03 Standard Telephones Cables Ltd Improvements in or relating to the manufacture of articles from sinterable material
NL272891A (en) * 1961-10-27
GB1006518A (en) * 1963-03-21 1965-10-06 Doulton & Co Ltd Improvements in or relating to moulding ceramic material
US4011291A (en) * 1973-10-23 1977-03-08 Leco Corporation Apparatus and method of manufacture of articles containing controlled amounts of binder
JPS5254711A (en) * 1975-10-29 1977-05-04 Leco Corp Method of preetreating ceramic base body pieces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032403A1 (en) * 1980-01-14 1981-07-22 WITEC Cayman Patents Ltd. Manufacture of parts from particulate material
EP0032405A1 (en) * 1980-01-14 1981-07-22 WITEC Cayman Patents Ltd. Method of making inelastically compressible ductile particulate material article and subsequent working thereof
US4534936A (en) * 1982-05-04 1985-08-13 Carlstroem Elis Method for removal of organic binding agents from molded bodies
EP0234420A2 (en) * 1986-02-14 1987-09-02 Fine Particle Technology Corp. Method for rapidly removing binder from a green body composed of metal, cermet or ceramic
EP0234420A3 (en) * 1986-02-14 1989-07-26 Fine Particle Technology Corp. Method for rapidly removing binder from a green body composed of metal, cermet or ceramic
US5877270A (en) * 1994-03-14 1999-03-02 Kabushiki Kaisha Komatsu Seisakusho Water solvent extraction degreasing method and molded products produced therewith

Also Published As

Publication number Publication date
JPS5740111B2 (en) 1982-08-25
CH632225A5 (en) 1982-09-30
DE2715563A1 (en) 1977-11-10
FR2403313B1 (en) 1982-11-19
JPS52145414A (en) 1977-12-03
FR2403313A1 (en) 1979-04-13
MX4540E (en) 1982-06-03
DE2715563C2 (en) 1981-12-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950330