CA2471095A1 - Propellant extrusion die - Google Patents

Propellant extrusion die Download PDF

Info

Publication number
CA2471095A1
CA2471095A1 CA002471095A CA2471095A CA2471095A1 CA 2471095 A1 CA2471095 A1 CA 2471095A1 CA 002471095 A CA002471095 A CA 002471095A CA 2471095 A CA2471095 A CA 2471095A CA 2471095 A1 CA2471095 A1 CA 2471095A1
Authority
CA
Canada
Prior art keywords
passage
die
central
extrusion die
lattice
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
CA002471095A
Other languages
French (fr)
Other versions
CA2471095C (en
Inventor
William J. Worrell, Jr.
Edward H. Zeigler
Marlon D. Harris
Leslie P. Gabrysch
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.)
Northrop Grumman Systems Corp
Original Assignee
Alliant Techsystems 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 Alliant Techsystems Inc filed Critical Alliant Techsystems Inc
Publication of CA2471095A1 publication Critical patent/CA2471095A1/en
Application granted granted Critical
Publication of CA2471095C publication Critical patent/CA2471095C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/777—Weapons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Of Metal (AREA)
  • Nozzles (AREA)

Abstract

An extrusion die for use in producing perforated stick-type propellant includes a die blank having a central passage therethrough, the passage having a tapered entry, an open lattice webbing structure having struts in and spanning the central die passage, and an array of die pins for imparting perforations in material forced through the central passage, each pin having a fixed end attached to the lattice structure and a free end extending parallel to the passage beyond the lattice structure.
CA002471095A 2003-10-31 2004-07-08 Propellant extrusion die Active CA2471095C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/698,091 US20050092166A1 (en) 2003-10-31 2003-10-31 Propellant extrusion die
US10/698,091 2003-10-31

Publications (2)

Publication Number Publication Date
CA2471095A1 true CA2471095A1 (en) 2004-09-20
CA2471095C CA2471095C (en) 2006-01-24

Family

ID=32991327

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002471095A Active CA2471095C (en) 2003-10-31 2004-07-08 Propellant extrusion die

Country Status (2)

Country Link
US (1) US20050092166A1 (en)
CA (1) CA2471095C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0618942D0 (en) * 2006-09-26 2006-11-08 Brightwater Engineering Ltd Apparatus and method
US10843979B2 (en) * 2013-08-16 2020-11-24 General Dynamics Ordnance and Tactical Systems—Canada Valleyfield Inc. Method of manufacturing multi-layered propellant grains
US10252954B1 (en) 2016-05-17 2019-04-09 The United States Of America As Represented By The Secretary Of The Army Multi-layered stable propellant composition
KR101903249B1 (en) * 2016-12-22 2018-10-01 주식회사 한화 Propellant extrusion mold with agate having teflon coating layer

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US241068A (en) * 1881-05-03 Augustus eeeve
US353681A (en) * 1886-12-07 Die for forming conduits or pipes
US1725959A (en) * 1929-08-27 Extruding bib
US1159489A (en) * 1911-08-19 1915-11-09 Cleveland Macaroni Company Die for forming edible pastes.
US1468535A (en) * 1921-02-03 1923-09-18 Chocolate Sponge Co Inc Die for making porous candies
US1618256A (en) * 1926-07-13 1927-02-22 Firm Gebruder Buhler Mold disk for dough presses
US1738665A (en) * 1927-08-16 1929-12-10 Raymond E Ober Peat-fuel machine
US2320243A (en) * 1940-03-27 1943-05-25 Du Pont Smokeless powder composition
US2342204A (en) * 1940-03-27 1944-02-22 Du Pont Method of manufacturing smokeless powder
US2491588A (en) * 1945-04-19 1949-12-20 Hercules Powder Co Ltd Extrusion die
US3778217A (en) * 1963-10-31 1973-12-11 Atomic Energy Commission Extrusion die
GB1207952A (en) * 1966-07-06 1970-10-07 Mini Of Technology Improvements in or relating to extrusion apparatus
US3790654A (en) * 1971-11-09 1974-02-05 Corning Glass Works Extrusion method for forming thinwalled honeycomb structures
US4021134A (en) * 1973-05-02 1977-05-03 General Refractories Company Extrusion die and cutting tool for machining such a die
DE2359282C3 (en) * 1973-11-28 1979-02-01 Wacker-Chemie Gmbh, 8000 Muenchen Device for the production of profiles from foamed thermoplastics
US3983283A (en) * 1974-03-18 1976-09-28 Corning Glass Works Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities
US4376624A (en) * 1981-08-06 1983-03-15 Osrow Products Corporation Extrusion die for a pasta-making kitchen appliance
US4413968A (en) * 1982-03-11 1983-11-08 Thiokol Corporation Extrusion die metering device
US4465652A (en) * 1983-03-11 1984-08-14 Corning Glass Works Laminated extrusion die blade support
US4743191A (en) * 1987-04-02 1988-05-10 Allied-Signal Inc. Multi-piece die for forming honeycomb structures
US4812276A (en) * 1988-04-29 1989-03-14 Allied-Signal Inc. Stepwise formation of channel walls in honeycomb structures
US4846657A (en) * 1988-05-02 1989-07-11 Allied-Signal Inc. Die for extruding ultrafine honeycomb structures
US5129304A (en) * 1988-08-29 1992-07-14 Apv Chemical Machinery Inc. Method and apparatus for processing potentially explosive and sensitive materials for forming longitudinally perforated extrudate strands
CA2024735C (en) * 1990-09-06 2001-01-30 Alexander Maule Method and apparatus for the production of bricks and the like
US5486248A (en) * 1994-05-31 1996-01-23 Morton International, Inc. Extrudable gas generant for hybrid air bag inflation system
US5761787A (en) * 1995-11-30 1998-06-09 Corning Incorporated Method of making bonded pin extrusion die
US6071444A (en) * 1997-11-24 2000-06-06 Alliant Techsystems Inc. Process for manufacture of perforated slab propellant
WO2000049282A2 (en) * 1999-02-16 2000-08-24 Alliant Techsystems Inc. Propellant grain capable of generating buffered boundary layer for reducing rocket nozzle recession
US6317960B1 (en) * 1999-12-28 2001-11-20 Corning Incorporated Extrusion die and method of forming
US6345577B1 (en) * 2000-09-27 2002-02-12 The United States Of America As Represented By The Secretary Of The Navy Energetic deterrent coating for gun propellant
US6776019B2 (en) * 2001-12-27 2004-08-17 Yugen Kaisha Yano Engineering Extrusion die for hollow member, mandrel for said extrusion die and male die for said extrusion die
US6991448B2 (en) * 2003-04-01 2006-01-31 Corning Incorporated Apparatus for extruding honeycomb bodies
US7018188B2 (en) * 2003-04-08 2006-03-28 The Procter & Gamble Company Apparatus for forming fibers

Also Published As

Publication number Publication date
US20050092166A1 (en) 2005-05-05
CA2471095C (en) 2006-01-24

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