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EP0580486B1 - Initialladung für die Randfeuerzündung und Verfahren zu ihrer Herstellung - Google Patents

Initialladung für die Randfeuerzündung und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0580486B1
EP0580486B1 EP93401852A EP93401852A EP0580486B1 EP 0580486 B1 EP0580486 B1 EP 0580486B1 EP 93401852 A EP93401852 A EP 93401852A EP 93401852 A EP93401852 A EP 93401852A EP 0580486 B1 EP0580486 B1 EP 0580486B1
Authority
EP
European Patent Office
Prior art keywords
priming charge
annular percussion
salt
tetrazene
pulverulent
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
EP93401852A
Other languages
English (en)
French (fr)
Other versions
EP0580486A1 (de
Inventor
Jean-René Duguet
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.)
NCS Pyrotechnie et Technologies SAS
Original Assignee
NCS Pyrotechnie et Technologies SAS
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 NCS Pyrotechnie et Technologies SAS filed Critical NCS Pyrotechnie et Technologies SAS
Publication of EP0580486A1 publication Critical patent/EP0580486A1/de
Application granted granted Critical
Publication of EP0580486B1 publication Critical patent/EP0580486B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C7/00—Non-electric detonators; Blasting caps; Primers
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
    • C06B33/10—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound the compound being an aromatic

Definitions

  • the present invention relates to new priming charges with annular percussion, as well as their manufacturing process.
  • percussion priming charges intended to ensure the ignition of propellant powders in the firing and sealing cartridges and generally in all devices producing a flame from the action of a striker, exhibit the most of the time the disadvantage of containing toxic compounds.
  • the dinitrobenzofuroxane salt cannot be used in any proportion or even in combination with any other explosive.
  • Long research finally made it possible to highlight which were the essential characteristics necessary for the constitution of a composition of starting charge which, on the one hand do not give place to any emission of toxic residues released into the atmosphere during the shooting cartridges, and on the other hand are endowed with a sufficient sensitivity to percussion but without excess, giving them a satisfactory operation.
  • the dinitrobenzofuroxane salt is preferably constituted by a salt of an alkali or alkaline earth metal, in particular its potassium salt.
  • the initiation composition with annular percussion according to the present invention must imperatively comprise, as explosives, a mixture of a salt of dinitrobenzofuroxane and of tetrazene.
  • concentrations of dinitrobenzofuroxane salt and tetrazene may however vary in practice in greater or lesser proportions which will depend on the mechanical environment of the filler, that is to say on the nature and the form. exact of the case used for the cartridge, as well as the nature of the powder used in this cartridge.
  • an explosive mixture containing a preponderant proportion of dinitrobenzofuroxane salt will be used. Most of the time, the dinitrobenzofuroxane salt will be involved in the composition so as to reach 40 to 70% of the total weight of the latter and the tetrazene so as to reach 5 to 15% by weight relative to the total weight of the composition.
  • the pulverulent oxidizing agent consists of cupric oxide, potassium nitrate, ferric oxide, a metal salicylate, ascorbic acid, a mineral or organic peroxide, as well than mixtures of these oxidants.
  • the pulverulent reducing agent will be chosen from calcium silicide, aluminum, iron, zinc, magnesium, as well as their mixtures, and in particular mixtures based on silicon silicide. calcium.
  • the inert abrasive powder consists of glass powder.
  • the calcium silicide used in the composition according to the invention will simultaneously fulfill the role of pulverulent reducing agent and inert abrasive powder.
  • the relative proportions of all the constituents will also be defined by a person skilled in the art calling upon his general knowledge in the matter, and in particular so as to obtain a composition suitable for good implementation, for example at the level volumetric dosing in cases with annular percussion.
  • a composition suitable for good implementation for example at the level volumetric dosing in cases with annular percussion.
  • a binder solution is also incorporated into the mixture, for example an aqueous solution of gum arabic.
  • Example The non-explosive ingredients of the composition according to the invention are weighed, namely cupric oxide, glass powder and calcium silicide, which are introduced into a rotary mixer where they are stirred so as to make the homogeneous mixture. This mixture is then transferred to a planetary mixer intended to receive wet compositions, into which the necessary quantity of water is added, then the potassium dinitrobenzofuroxane and the previously weighed tetrazene are poured onto this mixture.
  • an aqueous solution of gum arabic is added which acts as a binder.
  • the various pulverulent constituents are generally used with a small average particle size, preferably less than about 250 ⁇ m.
  • a ready-to-use composition corresponding to the following formulation: - potassium dinitrobenzofuroxane 55% - tetrazene 11% - cupric oxide 11% - glass powder 11% - calcium silicide 11% - binder: gum arabic 1%
  • compositions are then distributed by spreading in cases for 6.8 mm annular percussion and distributed by compression or turbination or any other mechanical means, for example using a device identical to that described in the application for French patent n ° 91 02011 relating to initiation by oblique compression.
  • an adequate mass of propellant powder is poured into each case, which is optionally packed, then pleating and then varnishing of the cartridges.
  • a projectile such as a bullet is placed and crimped onto the primed case.
  • Example K shows that the use of the potassium salt of dinitrobenzofuroxane as the only explosive leads to very poor results for cases with annular percussion.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Air Bags (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (11)

  1. Initialladung für die Randfeuerzündung, die frei von einem toxischen Metall ist, dadurch gekennzeichnet, daß sie die folgende Gewichtszusammensetzung hat:
    - 40 bis 90 % eines explosiven Gemisches aus einem Salz von Dinitro benzofuroxan und Tetrazen,
    - 5 bis 30 % eines pulverförmigen Oxidationsmittels,
    - 5 bis 25 % eines pulverförmigen Reduktionsmittels,
    - 0 bis 25 % eines inerten Schleifmittelpulvers und
    - 0 bis 5 % eines Bindemittels.
  2. Initialladung für die Randfeuerzündung nach Anspruch 1, dadurch gekennzeichnet, daß das Dinitrobenzofuroxan-Salz ein Alkali- oder Erdalkalimetallsalz, insbesondere Kaliumdinitrobenzofuroxan, ist.
  3. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß das explosive Gemisch einen überwiegenden Mengenanteil an Dinitrobenzofuroxan-Salz enthält.
  4. Initialladung für die Randfeuerzündung nach Anspruch 3, dadurch gekennzeichnet, daß das Dinitrobenzofuroxan-Salz 40 bis 70 Gew.-% der Gesamtzusammensetzung ausmacht und das Tetrazen 5 bis 15 Gew.-% der Gesamtzusammensetzung ausmacht.
  5. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das pulverförmige Oxidationsmittel ausgewählt wird aus der Gruppe Kupfer(II)oxid, Kaliumnitrat, Eisen(III)oxid, Metallsalicylat, Ascorbinsäure, mineralisches oder organisches Peroxid sowie Mischungen dieser Oxidationsmittel.
  6. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das pulverförmige Reduktionsmittel ausgewählt wird aus der Gruppe Calciumsilicid, Aluminiumsilicid, Eisensilicid, Zinksilicid und Magnesiumsilicid sowie ihren Mischungen und insbesondere den Mischungen auf Basis von Calciumsilicid.
  7. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das inerte Schleifmittelpulver aus Glaspulver besteht.
  8. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Calciumsilicid gleichzeitig die Rolle eines pulverförmigen Reduktionsmittels und eines Schleifmittelpulvers spielt.
  9. Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß sie die folgende Gesamtzusammensetzung hat:
    - 40 bis 70 % Kalium-dinitrobenzofuroxan
    - 5 bis 15 % Tetrazen
    - 5 bis 30 % Kupfer(II)oxid
    - 5 bis 25 % Calciumsilicid
    - 5 bis 25 % Glaspulver und
    - 0 bis 5 % Bindemittel.
  10. Verfahren zur Herstellung einer Initialladung für die Randfeuerzündung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß es die folgenden aufeinanderfolgenden Stufen umfaßt:
    - trockenes Mischen des pulverförmigen Oxidationsmittels mit dem pulverförmigen Reduktionsmittel und dem inerten Schleifmittelpulver;
    - anschließendes Zugeben des Dinitrobenzofuroxan-Salzes und von Tetrazen zu der so hergestellten Mischung und dann
    - Homogenisieren der so erhaltenen Mischung.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß während des zuletzt genannten Arbeitsganges, der darin besteht, das Dinitrobenzofuroxan-Salz und das Tetrazen zuzugeben, auch eine Bindemittellösung, beispielsweise eine wäßrige Lösung von Gummiarabicum, dem Gemisch einverleibt wird.
EP93401852A 1992-07-20 1993-07-19 Initialladung für die Randfeuerzündung und Verfahren zu ihrer Herstellung Expired - Lifetime EP0580486B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9208945A FR2693721B1 (fr) 1992-07-20 1992-07-20 Charge d'amorçage à percussion annulaire et son procédé de fabrication.
FR9208945 1992-07-20

Publications (2)

Publication Number Publication Date
EP0580486A1 EP0580486A1 (de) 1994-01-26
EP0580486B1 true EP0580486B1 (de) 1996-06-26

Family

ID=9432068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401852A Expired - Lifetime EP0580486B1 (de) 1992-07-20 1993-07-19 Initialladung für die Randfeuerzündung und Verfahren zu ihrer Herstellung

Country Status (4)

Country Link
US (1) US5353707A (de)
EP (1) EP0580486B1 (de)
DE (1) DE69303334T2 (de)
FR (1) FR2693721B1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417160A (en) * 1993-12-01 1995-05-23 Olin Corporation Lead-free priming mixture for percussion primer
IT1266171B1 (it) * 1994-07-15 1996-12-23 Europa Metalli Sezione Difesa Miscela innescante esente da materiali tossici ed innesco a percussione per cartucce utilizzante tale miscela.
FR2722876B1 (fr) * 1994-07-22 1996-09-13 Manurhin Defense Projectile explosif
EP0704415B1 (de) 1994-08-27 1999-03-03 Eley Limited Initialladung
US5616881A (en) * 1995-05-30 1997-04-01 Morton International, Inc. Inflator socket pin collar for integrated circuit initaitor with integral metal oxide varistor for electro-static discharge protections
US5684268A (en) * 1995-09-29 1997-11-04 Remington Arms Company, Inc. Lead-free primer mix
DE19540278A1 (de) * 1995-10-28 1997-04-30 Dynamit Nobel Ag Blei- und Barium-freie Anzündsätze
US5672841A (en) * 1995-12-15 1997-09-30 Morton International, Inc. Inflator initiator with zener diode electrostatic discharge protection
US5932832A (en) * 1996-04-15 1999-08-03 Autoliv Asp, Inc. High pressure resistant initiator with integral metal oxide varistor for electro-static discharge protection
US6305286B1 (en) * 1997-03-12 2001-10-23 Trw Inc. Preparation of an igniter with an ultraviolet cured ignition droplet
GB2329380B (en) * 1997-09-13 1999-08-18 Royal Ordnance Plc Priming composition
US5993577A (en) * 1998-09-04 1999-11-30 Federal Cartridge Company Lead-free, heavy-metal-free rim-fire priming composition dedicated for Ralph B. Lynn
FR2809806B1 (fr) * 2000-05-30 2003-01-10 Livbag Snc Initiateur electro-pyrotechnique a pont en couche mince et a tres basse energie de fonctionnement
US6544363B1 (en) 2000-10-30 2003-04-08 Federal Cartridge Company Non-toxic, heavy-metal-free shotshell primer mix
US20040002604A1 (en) * 2001-12-10 2004-01-01 Richard Apodaca Phenylalkynes
US6663731B1 (en) 2002-03-12 2003-12-16 The United States Of America As Represented By The Secretary Of The Navy Lead-free pyrotechnic composition
US20040154713A1 (en) * 2003-01-23 2004-08-12 Olin Corporation Lead-free nontoxic priming mix
DE102006024511A1 (de) * 2006-05-23 2007-11-29 Ruag Ammotec Gmbh Anzündsatz
JP5805382B2 (ja) * 2009-11-16 2015-11-04 日本工機株式会社 雷管用起爆剤組成物
EP3218330A1 (de) * 2014-11-10 2017-09-20 RUAG Ammotec GmbH Thermisches frühzündmittel
US9800580B2 (en) * 2015-11-16 2017-10-24 Mastercard International Incorporated Systems and methods for authenticating an online user using a secure authorization server
US10352671B1 (en) 2017-04-07 2019-07-16 The United States Of America As Represented By The Secretary Of The Army Automated primer manufacturing machine and process

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135636A (en) * 1962-01-02 1964-06-02 Atlas Chem Ind Ignition composition containing an alkali metal salt of dinitrobenzfuroxan and a lacqer binder
US3423259A (en) * 1966-03-28 1969-01-21 Olin Mathieson Ammunition priming composition of dry particulate ingredients with karaya gum binder
US3321343A (en) * 1966-03-28 1967-05-23 Olin Mathieson Priming composition containing carbon which exhibits conchoidal fracture
US4142927A (en) * 1975-09-04 1979-03-06 Walker Franklin E Free radical explosive composition
US4406210A (en) * 1981-02-17 1983-09-27 Brunswick Corporation Jet-propelled missile with single propellant-explosive
US5039812A (en) * 1981-04-13 1991-08-13 The United States Of America As Represented By The Secretary Of The Navy Insensitive high density explosive
US4503229A (en) * 1983-06-24 1985-03-05 United States Of America As Represented By The Secretary Of The Navy 1,4,5,8-Tetranitro-1,4,5,8-tetraazadifurazano-[3,4-c][3,4-h]decalin
US4689185A (en) * 1986-07-25 1987-08-25 Olin Corporation Priming method for rimfire cartridge
FR2628735B1 (fr) * 1988-03-15 1990-08-24 Ncs Pyrotechnie Technologies Charges d'amorcage a percussion et leur procede de fabrication
US4963201A (en) * 1990-01-10 1990-10-16 Blount, Inc. Primer composition
US5088412A (en) * 1990-07-16 1992-02-18 Networks Electronic Corp. Electrically-initiated time-delay gas generator cartridge for missiles

Also Published As

Publication number Publication date
EP0580486A1 (de) 1994-01-26
FR2693721B1 (fr) 1994-10-21
DE69303334T2 (de) 1996-11-28
DE69303334D1 (de) 1996-08-01
US5353707A (en) 1994-10-11
FR2693721A1 (fr) 1994-01-21

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