FR2376094A1 - HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS - Google Patents

HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS

Info

Publication number
FR2376094A1
FR2376094A1 FR7639455A FR7639455A FR2376094A1 FR 2376094 A1 FR2376094 A1 FR 2376094A1 FR 7639455 A FR7639455 A FR 7639455A FR 7639455 A FR7639455 A FR 7639455A FR 2376094 A1 FR2376094 A1 FR 2376094A1
Authority
FR
France
Prior art keywords
mold
blank
punch
double
hot molding
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
FR7639455A
Other languages
French (fr)
Other versions
FR2376094B1 (en
Inventor
Pierre Cougoul
Bernard Doin
Andre Hiss
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7639455A priority Critical patent/FR2376094A1/en
Priority to YU293777A priority patent/YU39625B/en
Priority to DE19772756670 priority patent/DE2756670C2/en
Priority to IT6983377A priority patent/IT1091375B/en
Priority to GB5400877A priority patent/GB1580948A/en
Publication of FR2376094A1 publication Critical patent/FR2376094A1/en
Application granted granted Critical
Publication of FR2376094B1 publication Critical patent/FR2376094B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0041—Shaping the mixture by compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/24—Charging rocket engines with solid propellants; Methods or apparatus specially adapted for working solid propellant charges

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Fabrication de blocs de propergols à double base par moulage à chaud. Procédé comportant a. la mise en place d'une ébauche de propergol dans un moule comprenant une cavité de moulage présentant une partie du profil extérieur de la pièce à obtenir et un poinçon mobile possédant le profil géometrique complémentaire de la pièce a. obtenir; b. la fermeture du moule, la mise en température du moule, du poinçon et de l'ébauche; c. le déplacement du poinçon dans ladite cavité de moulage pour comprimer et déformer l'ébauche à la forme de la pièce à obtenir et d. l'extraction de la pièce ainsi moulée, caractérisé en ce que, après la mise en place de l'ébauche, on ferme le moule de manière étanche et on fait le vide dans la cavité de moulage. Un tel procédé permet de travailler en toute sécurité, notamment à des températures supérieures à 85 degrés C.Manufacture of double base propellant blocks by hot molding. Method comprising a. the placing of a propellant blank in a mold comprising a molding cavity having part of the outer profile of the part to be obtained and a mobile punch having the complementary geometrical profile of part a. get; b. closing the mold, warming up the mold, the punch and the blank; vs. moving the punch in said mold cavity to compress and deform the blank to the shape of the part to be obtained and d. the extraction of the part thus molded, characterized in that, after the introduction of the blank, the mold is closed in a leaktight manner and a vacuum is created in the mold cavity. Such a process makes it possible to work in complete safety, especially at temperatures above 85 degrees C.

FR7639455A 1976-12-29 1976-12-29 HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS Granted FR2376094A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7639455A FR2376094A1 (en) 1976-12-29 1976-12-29 HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS
YU293777A YU39625B (en) 1976-12-29 1977-12-12 Process for forming blocks of dibasic propergol by means of warm molding
DE19772756670 DE2756670C2 (en) 1976-12-29 1977-12-19 Method and device for hot-forming dibasic propellant blocks
IT6983377A IT1091375B (en) 1976-12-29 1977-12-19 PROCEDURE AND DEVICE FOR HOT MOLDING OF BLOCKS OF DOUBLE BASE PROPERGLES
GB5400877A GB1580948A (en) 1976-12-29 1977-12-23 Hot moulding process for blocks of two-component propellants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7639455A FR2376094A1 (en) 1976-12-29 1976-12-29 HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS

Publications (2)

Publication Number Publication Date
FR2376094A1 true FR2376094A1 (en) 1978-07-28
FR2376094B1 FR2376094B1 (en) 1979-04-20

Family

ID=9181688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7639455A Granted FR2376094A1 (en) 1976-12-29 1976-12-29 HOT MOLDING PROCESS FOR DOUBLE-BASED PROPERGOL BLOCKS

Country Status (5)

Country Link
DE (1) DE2756670C2 (en)
FR (1) FR2376094A1 (en)
GB (1) GB1580948A (en)
IT (1) IT1091375B (en)
YU (1) YU39625B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442813A1 (en) * 1978-06-27 1980-06-27 Poudres & Explosifs Ste Nale HOT MOLDING PROCESS FOR DOUBLE BASE PROPERGOL BLOCKS
FR2442812A2 (en) * 1978-06-27 1980-06-27 Poudres & Explosifs Ste Nale Hot-moulding of blocks of double-base propergol(s) - comprises dividing block into fractions and preheating before moulding, to reduce residence time in mould
FR2672589A1 (en) * 1991-02-11 1992-08-14 Giat Ind Sa Propellent charge of the powder sheet type, process for its manufacture and ammunition incorporating such a charge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2607223C1 (en) * 2015-07-20 2017-01-10 Акционерное общество "Федеральный научно-производственный центр "Алтай" Method of making composite solid rocket propellant charge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324206A (en) * 1961-10-23 1967-06-06 Aerojet General Co Method of forming high energy solid fuel grain for a rocket

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405201A (en) * 1965-12-21 1968-10-08 Standard Oil Co Process for preparing propellant grain

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324206A (en) * 1961-10-23 1967-06-06 Aerojet General Co Method of forming high energy solid fuel grain for a rocket

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442813A1 (en) * 1978-06-27 1980-06-27 Poudres & Explosifs Ste Nale HOT MOLDING PROCESS FOR DOUBLE BASE PROPERGOL BLOCKS
FR2442812A2 (en) * 1978-06-27 1980-06-27 Poudres & Explosifs Ste Nale Hot-moulding of blocks of double-base propergol(s) - comprises dividing block into fractions and preheating before moulding, to reduce residence time in mould
FR2672589A1 (en) * 1991-02-11 1992-08-14 Giat Ind Sa Propellent charge of the powder sheet type, process for its manufacture and ammunition incorporating such a charge

Also Published As

Publication number Publication date
FR2376094B1 (en) 1979-04-20
IT1091375B (en) 1985-07-06
YU39625B (en) 1985-03-20
YU293777A (en) 1982-10-31
DE2756670A1 (en) 1978-07-13
GB1580948A (en) 1980-12-10
DE2756670C2 (en) 1983-05-26

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