EP0656332A1 - Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application - Google Patents

Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application Download PDF

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Publication number
EP0656332A1
EP0656332A1 EP94203118A EP94203118A EP0656332A1 EP 0656332 A1 EP0656332 A1 EP 0656332A1 EP 94203118 A EP94203118 A EP 94203118A EP 94203118 A EP94203118 A EP 94203118A EP 0656332 A1 EP0656332 A1 EP 0656332A1
Authority
EP
European Patent Office
Prior art keywords
percussion primer
primer according
weight
primer
percussion
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.)
Withdrawn
Application number
EP94203118A
Other languages
German (de)
English (en)
Inventor
Walter Rauber
Markus Tobler
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.)
RUAG Ammotec AG
Original Assignee
Schweizerische Eidgenossenschaft Vertreten Durch Die Sm Schweizerische Munitionsunternehmung Der Gruppe fur Ruestungsdienste
SM Schweizerische Munitionsunternehmung AG
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 Schweizerische Eidgenossenschaft Vertreten Durch Die Sm Schweizerische Munitionsunternehmung Der Gruppe fur Ruestungsdienste, SM Schweizerische Munitionsunternehmung AG filed Critical Schweizerische Eidgenossenschaft Vertreten Durch Die Sm Schweizerische Munitionsunternehmung Der Gruppe fur Ruestungsdienste
Publication of EP0656332A1 publication Critical patent/EP0656332A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00Compositions 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
    • C06B33/12Compositions 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 the material being two or more oxygen-yielding compounds
    • C06B33/14Compositions 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 the material being two or more oxygen-yielding compounds at least one being an inorganic nitrogen-oxygen salt
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06CDETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C7/00Non-electric detonators; Blasting caps; Primers

Definitions

  • the invention relates to a percussion primer for initiating a propellant charge in a handgun, the primer consisting of at least one reducing and oxidizing agent each and containing at least one binder, a process for its production and use of the primer.
  • the propellant charge mentioned in the preamble corresponds to the usual terms "gunpowder” or propellant, but could also be a pyrotechnic phrase.
  • primers and primers according to the preamble are known, which contain heavy metal salts of aromatic nitro compounds. Such igniters develop harmful gases, especially if they are used for training purposes in closed rooms.
  • the object of the invention is to create a pollutant-free primer and to produce without events that is free of harmful emissions.
  • the secondary explosive listed in the patent claim is understood to mean an explosive that supplies energy when it is deflagrated.
  • An important advantage of the invention is that the reducing agents and oxidizing agents consist exclusively of inorganic compounds. In contrast to the state of the art, their reaction products are therefore not carcinogenic.
  • the method for producing the percussion primer according to the invention consists in rinsing activated and temporarily phlegmatized zirconium powder with an organic solvent and then mixing, kneading, drying and pressing it into an ignition element with the other components.
  • manganese dioxide is particularly suitable according to claim 3; it is also very economical. Commercial activated manganese dioxide is very reactive and ensures good combustion of the zirconium, which is used in particular as a special metal; it is reduced to metallic manganese itself.
  • potassium nitrate As an oxygen carrier with a lower reaction potential, potassium nitrate has proven itself in accordance with claim 4. As mentioned above, its oxidation potential is somewhat lower than that of manganese dioxide, so it only releases its oxygen when a certain amount of energy has been built up from the reaction of the zirconium with the manganese dioxide.
  • Nitrated aliphatic polyalcohols according to claim 5 are suitable as secondary explosives for a primer free of pollutants, since they only burn to form carbon dioxide, nitrogen or nitrogen oxides.
  • Pentaerythritol tetranitrate according to claim 6, also known as nitropenta or PETN, was preferably evaluated as a secondary explosive.
  • Isopropanol and Aerosil in the broader sense form the binder according to claim 7.
  • This binder mixture forms a pasty dough, which is particularly suitable as a carrier medium for the zirconium preferred as a special metal and the oxidizing agents.
  • the aerosil used according to claim 8 could cause friction ignition, but tests clearly show that the primer according to the invention is already ignited by impact.
  • the primer compound is only dried until it is pasty and is then applied to a prepared substrate and pressed thereon in a manner known per se, so that an ignition element is produced.
  • the zirconium powder used according to the invention as a reducing agent has the following characteristics: - bulk density 1.25 g / cm3 - ignition point 180 ° C ⁇ 10 ° C - burning time 7 ⁇ 3 s / 50 cm - grain size 100% ⁇ 40 ⁇ m - Grain size according to Blaine 1.7 ⁇ m ⁇ 0.2 ⁇ m - Specific surface 1.8 m2 / g - oxidation value 30.5% ⁇ 0.5% (weight gain during combustion)
  • the zirconium powder used is known per se; it has so far been used in pyrotechnics for the production of reactive Ignition compounds and in the production of photo flash dice.
  • the sequence of the ignition process using the ignition charge according to the invention can be represented as follows:
  • zirconium with increased porosity of the surface through surface treatment; for example, through hydrogen doping
  • Activated forms of zirconium ignite with little energy; mechanical (impact, friction) or thermal (e.g. Joule heat).
  • the necessary ignition temperature is between 180 ° C and 280 ° C.
  • the oxygen required for the reaction is primarily (quickly) taken from the manganese dioxide.
  • Potassium nitrate is another oxygen carrier available that supports the build-up of pressure in such a way that it fulfills the energy requirements for initiating the secondary explosive. This deflagrates and acts as a further energy supplier in the ignition chain.
  • the primer according to the invention fulfills all the demands placed on the weapon and ammunition. Since the dwell time of the projectile increases slightly during the barrel, the pressure of the powder combustion gases can be better utilized. Reproducible muzzle velocities around 366 m / s were measured; these are practically identical to those which can be achieved with the conventional lead-containing primer.
  • compositions for the primer Manganese IV oxide from 40.0 to 50.0% by weight, zirconium in the form of the activated powder from 17.0 to 23.0% by weight, pentaerythritol tetranitrate (nitropenta) from 13.0 to 17.0% by weight , Potassium nitrate from 17.0 to 23.0% by weight and Aerosil from 0.4 to 0.6% by weight.
  • a percussion primer with the mixture proportions shows the best effect: Manganese dioxide 44.5% by weight, zirconium 20.0% by weight, pentaerythritol tetranitrate (nitropenta) 15.0% by weight, potassium nitrate 20.0% by weight and Aerosil 0.5% by weight.
  • activated zirconium powder When preparing the powdered, activated zirconium powder, particular care should be taken to ensure that the product, which is preferably available from DEGUSSA AG, Hanau, DE, with approx. 30% water content (activated form Increasing the porosity of the surface) always remains moist. As already described above, if work is to be carried out on an organic basis, the water content of the zirconium powder must be displaced by an aliphatic alcohol, such as isopropanol.
  • Pentaerythritol tetranitrate (nitropenta) is used in particular because of its high level of initiation.
  • the product is ground in water using a ball mill to a grain size of max. Grind 500 ⁇ m.
  • the regrind is then applied wet to sieves, rinsed through with water and the fraction from 125 to 250 ⁇ m is collected.
  • the product must be dried in a drying cabinet (45 to 50 ° C, 150 mbar) before further use.
  • pentaerythritol tetranitrate instead of pentaerythritol tetranitrate, other secondary explosives can also be used, but also suitable propellant charges such as. those from nitrated alcohols and nitrated ether, such as nitroglycerin, nitroglycol are used.
  • the potassium nitrate is expediently ground dry in a ball mill and sieving results in a grain size of max. 250 ⁇ m read out.
  • the air humidity should be 40 to 70%. Too dry air (air humidity of less than 40%) leads to strong dust formation, air that is too humid (air humidity of more than 70%) leads to undesirable tuber formation in the ground potassium nitrate. After that, the ground material must be kept in tightly closed containers until it is used.
  • the subsequent mixing takes place in a mixing vessel using a kneading machine or stirrer to form a spreadable pasty Dimensions.
  • the mixture thus obtained is added to the primer.
  • the ignition elements in particular the ignition capsule, are then produced using the ignition set described here in a notoriously known, conventional manner.
  • the primers realized with the activated special metal zirconium could be replaced by other, likewise activated special metals with appropriately adapted oxygen carriers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Paints Or Removers (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Air Bags (AREA)
EP94203118A 1993-11-09 1994-10-27 Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application Withdrawn EP0656332A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH336093A CH685940A5 (de) 1993-11-09 1993-11-09 Perkussionszundsatz fur Handfeuerwaffen, Verfahren zu seiner Herstellung sowie dessen Verwendung.
CH3360/93 1993-11-09

Publications (1)

Publication Number Publication Date
EP0656332A1 true EP0656332A1 (fr) 1995-06-07

Family

ID=4254298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94203118A Withdrawn EP0656332A1 (fr) 1993-11-09 1994-10-27 Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application

Country Status (4)

Country Link
US (1) US5492577A (fr)
EP (1) EP0656332A1 (fr)
CH (1) CH685940A5 (fr)
IL (1) IL111522A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023434A1 (fr) * 1995-12-23 1997-07-03 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Melange d'allumage exempt d'explosif d'amorçage
US6964287B1 (en) 1999-09-17 2005-11-15 Sellier & Bellot, A.S. Non-toxic and non-corrosive ignition mixture
CN105924324A (zh) * 2016-04-25 2016-09-07 中国工程物理研究院化工材料研究所 富燃料金属化炸药的非水捏合造粒方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2240994C2 (ru) * 2002-10-02 2004-11-27 ФГУП "Российский федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" Воспламенительный состав
US8425703B1 (en) * 2010-03-24 2013-04-23 The United States of Amierica as Represented by the Secretary of the Navy Insensitive munitions primers
DE102010027074B4 (de) * 2010-07-13 2013-01-24 Eads Deutschland Gmbh Verfahren und Vorrichtung zur Detektion von Sprengstoffpartikeln in einem Gasstrom

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970047A (en) * 1958-06-05 1961-01-31 Thomas Q Ciccone Conductive priming mixture
US3275484A (en) * 1964-06-01 1966-09-27 Remington Arms Co Inc Percussion sensitive pyrotechnic or pyrophoric alloy-type priming mixture
US3291665A (en) * 1962-01-24 1966-12-13 Hi Shear Corp Zirconium composition with potassium perchlorate and graphite
DE1243067B (de) * 1965-11-13 1967-06-22 Karlsruhe Augsburg Iweka Perkussionszuendsatz fuer Niederdruck-Zuendung
EP0031045A2 (fr) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Utilisation du peroxyde de zinc comme oxydant pour explosifs et compositions pyrotechniques
DE3243425A1 (de) * 1982-11-24 1984-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Anzuendmittel fuer treibladungen
US4522665A (en) * 1984-03-08 1985-06-11 Geo Vann, Inc. Primer mix, percussion primer and method for initiating combustion
WO1993011089A1 (fr) * 1991-11-27 1993-06-10 Hadden William C Matiere deflagrante a amorçage en surface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT370403B (de) * 1978-02-16 1983-03-25 Dynamit Nobel Ag Zuend- und anzuendsaetze
US4756250A (en) * 1985-01-14 1988-07-12 Britanite Industrias Quimicas Ltda. Non-electric and non-explosive time delay fuse
US4566921A (en) * 1985-02-08 1986-01-28 L'etat Francais Represente Par Le Delegue Ministeriel Pour L'armement Priming composition which is sensitive to percussion and a method for preparing it

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970047A (en) * 1958-06-05 1961-01-31 Thomas Q Ciccone Conductive priming mixture
US3291665A (en) * 1962-01-24 1966-12-13 Hi Shear Corp Zirconium composition with potassium perchlorate and graphite
US3275484A (en) * 1964-06-01 1966-09-27 Remington Arms Co Inc Percussion sensitive pyrotechnic or pyrophoric alloy-type priming mixture
DE1243067B (de) * 1965-11-13 1967-06-22 Karlsruhe Augsburg Iweka Perkussionszuendsatz fuer Niederdruck-Zuendung
EP0031045A2 (fr) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Utilisation du peroxyde de zinc comme oxydant pour explosifs et compositions pyrotechniques
DE3243425A1 (de) * 1982-11-24 1984-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Anzuendmittel fuer treibladungen
US4522665A (en) * 1984-03-08 1985-06-11 Geo Vann, Inc. Primer mix, percussion primer and method for initiating combustion
WO1993011089A1 (fr) * 1991-11-27 1993-06-10 Hadden William C Matiere deflagrante a amorçage en surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023434A1 (fr) * 1995-12-23 1997-07-03 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Melange d'allumage exempt d'explosif d'amorçage
US6964287B1 (en) 1999-09-17 2005-11-15 Sellier & Bellot, A.S. Non-toxic and non-corrosive ignition mixture
CN105924324A (zh) * 2016-04-25 2016-09-07 中国工程物理研究院化工材料研究所 富燃料金属化炸药的非水捏合造粒方法
CN105924324B (zh) * 2016-04-25 2017-12-19 中国工程物理研究院化工材料研究所 富燃料金属化炸药的非水捏合造粒方法

Also Published As

Publication number Publication date
CH685940A5 (de) 1995-11-15
US5492577A (en) 1996-02-20
IL111522A (en) 1997-01-10
IL111522A0 (en) 1995-01-24

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