EP3218331A1 - Pyrotechnical retarding element - Google Patents

Pyrotechnical retarding element

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Publication number
EP3218331A1
EP3218331A1 EP15801346.6A EP15801346A EP3218331A1 EP 3218331 A1 EP3218331 A1 EP 3218331A1 EP 15801346 A EP15801346 A EP 15801346A EP 3218331 A1 EP3218331 A1 EP 3218331A1
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EP
European Patent Office
Prior art keywords
weight
parts
mixture
delay
firing
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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
EP15801346.6A
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German (de)
French (fr)
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EP3218331B1 (en
Inventor
Helmut ZÖLLNER
Dirk FUNKE
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DynITEC GmbH
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DynITEC GmbH
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00—Fuses, e.g. fuse cords
    • C06C5/06—Fuse igniting means; Fuse connectors
    • 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
    • C06B33/06—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 the material being an inorganic oxygen-halogen salt
    • 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
    • C06B33/12—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 the material being two or more oxygen-yielding compounds

Definitions

  • the invention relates to a pyrotechnic retarding element for use in pyrotechnic igniter chains, and more particularly to a retarder set therein.
  • the delay element is characterized by a flexible and easy adjustment of the burning speed over a wide range.
  • the triggering takes place via ignition chains, which can consist of several igniters.
  • the task of this ignition chain is to convert an external trigger pulse into a pyrotechnic reaction and to react the effective charge at the desired time. Often it is necessary to keep a certain time interval between the external trigger and the reaction of the active charge. Since the times for external triggering and reaction of the active charge are generally fixed uninfluenced, a so-called delay element must ensure the necessary time interval (delay time) within the ignition chain. This delay time can be between a few milliseconds and several seconds, depending on the application.
  • the ignition retarder (1) consists of a cylindrical metal tube (2) and usually contains three pyrotechnic sets.
  • Metal tube (2) is preferably made of steel, brass or aluminum.
  • the flame-sensitive Anakiungssatz (3) which is ignited by the upstream ignition means and has the task to safely ignite the following usually less sensitive delay set (4).
  • the firing set (5) On the output side, after the delay set, there is the firing set (5) which ensures the transmission of the reaction to the following firing means.
  • the pyrotechnic reaction thus runs linearly through the ignition retarder. All sets are introduced by one or more parts loading and pressing processes in the metal body. From a design point of view of the ammunition, it is desirable to realize the different delay times with a fixed length of the ignition retarder.
  • the control of the delay time is preferably realized by the composition of sentences. What is needed, therefore, is a delay set system that can be fine-tuned within its composition allows the setting of the desired delay time.
  • Pyrotechnic delay sets have been known for decades and are also used in civil blasting technology in so-called explosive detonators. They usually consist of a mixture of fuel and oxidant. Compared to civil applications, additional requirements are added when used in pyrotechnic ammunition.
  • the burn - through capability ie the reliable linear burnup of the
  • Delay rate must be given over a wide temperature range (at least -54 ° C to +71 ° C) and largely independent of the pressure conditions.
  • the burning rate should ideally have no or only a small dependence on the temperature and the external pressure. It is distinguished between ignition retardants in "closed” and “open” construction. When the construction is closed, a triggering element (for example a primer cap) and a cover of the firing kit are integrated. In open design, the surfaces of the firing and firing are free. The open design requires from the used pyrotechnic sets a high degree of independence of the burning speed from the external pressure. In addition, a high stability of the delay rates and compatibility with the
  • Pyrotechnic delay sets can be prepared as a dry mixture of the starting materials or in a wet process with the addition of a binder as granules of the starting materials.
  • pyrotechnic delay sets are often used in open fire retardants for military applications, which on the one hand contain SVHC substances (Substances of Very High Concern) and, on the other hand, a comparatively clear one
  • the temperature response in the processed state in the ignition retarder is approximately 10 to 20% of the nominal value of the delay time (temperature range: -54 ° C to +71 ° C).
  • the present invention has for its object to provide a pyrotechnic delay element for pyrotechnic ignition chains. This should:
  • a retarding element which contains in a metal sleeve a Anakiungssatz-, a Verzögerungssatz- and a Feuerungssatz mixture, wherein the starting and Feuerungssatz mixture at least 35 parts by weight of boron, at least 15 parts by weight of iron (III) oxide and at least 5 parts by weight of potassium perchlorate are in each case contained in addition to 100 wt .-% and in the mixture of the delay rate at least 5 parts by weight of potassium perchlorate, at least 10
  • titanium (IV) oxide Parts by weight of titanium (IV) oxide, at least 25 parts by weight of tungsten and at least 1 part by weight of aluminum are contained. Components listed in the mixtures with a minimum content and optionally at least one further component supplement each other to 100 parts by weight.
  • a retarding element in which the starting and firing rate mixture consist of at least 70 parts by weight of red lead and at least 20 parts by weight of silicon.
  • Delay rate still contain 0.1 - 3% by weight of a binder as a surcharge.
  • the length of the metal sleeve is 19 mm with an outer diameter of 6 mm and an inner diameter of 3.6 mm.
  • the height of the delay rate column is 9 mm in all examples. Firing and firing have a height of 5 mm each.
  • the delay time is then defined as the time between the initiation of the firing charge and the firing charge reaction ( Figure 2).
  • the preferred delay time of 2.25 seconds, for example, with the following
  • Potassium perchlorate 10% The desired good burn through capability could be proven by testing about 1000 ignition restraints of this design. Based on 1000 error-free tests, a minimum reliability of 99.7% (confidence level 95%) results, which clearly exceeds the usual military requirements for such components of 99%.
  • the dependence of the firing time on the temperature was determined by the delay time in the firing delay in the temperature range between -54 ° C and +71 ° C. In the temperature range considered, it is about 8%, based on the firing rate at room temperature, and is thus clearly below the value of about 10-20% in conventional typesetting systems (for example potassium perchlorate / lead chromate / antimony).

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Air Bags (AREA)

Abstract

The invention relates to a pyrotechnical retarding element for use in pyrotechnical igniter trains, said retarding element containing a lighting charge mixture, a retarding charge mixture and a firing charge mixture; the lighting charge mixture and the firing charge mixture contain at least 40 percent by weight boron, at least 20 percent by weight iron(III) oxide, and at least 5 percent by weight potassium perchlorate, the percentages adding up to 100 wt% in each mixture, and the retarding charge mixture contains at least 5 percent by weight potassium perchlorate, at least 10 percent by weight titanium(IV) oxide, at least 30 percent by weight tungsten, and at least 2 percent by weight aluminum.

Description

Pyrotechnisches Verzögerungselement  Pyrotechnic delay element
Die Erfindung betrifft ein pyrotechnisches Verzögerungselement für die Verwendung in pyrotechnischen Anzündketten und insbesondere einen Verzögerungssatz darin. Das Verzögerungselement zeichnet sich durch eine flexible und einfache Einstellung der Brenngeschwindigkeit über einen weiten Bereich aus. The invention relates to a pyrotechnic retarding element for use in pyrotechnic igniter chains, and more particularly to a retarder set therein. The delay element is characterized by a flexible and easy adjustment of the burning speed over a wide range.
Bei pyrotechnischer Munition erfolgt die Auslösung über Anzündketten, die aus mehreren Anzündmitteln bestehen können. Aufgabe dieser Anzündkette ist es, einen externen Auslöseimpuls in eine pyrotechnische Reaktion umzuwandeln und die Wirkladung zum gewünschten Zeitpunkt zur Reaktion zu bringen. Oftmals ist es notwendig, ein bestimmtes Zeitintervall zwischen dem externen Auslöseimpuls und der Reaktion der Wirkladung einzuhalten. Da die Zeitpunkte für externe Auslösung und Reaktion der Wirkladung in der Regel unbeeinflussbar feststehen, muss innerhalb der Anzündkette ein sogenanntes Verzögerungselement den notwendigen Zeitabstand (Verzögerungszeit) sicherstellen. Diese Verzögerungszeit kann in Abhängigkeit von der Anwendung zwischen einigen Millisekunden und mehreren Sekunden liegen. In pyrotechnic ammunition, the triggering takes place via ignition chains, which can consist of several igniters. The task of this ignition chain is to convert an external trigger pulse into a pyrotechnic reaction and to react the effective charge at the desired time. Often it is necessary to keep a certain time interval between the external trigger and the reaction of the active charge. Since the times for external triggering and reaction of the active charge are generally fixed uninfluenced, a so-called delay element must ensure the necessary time interval (delay time) within the ignition chain. This delay time can be between a few milliseconds and several seconds, depending on the application.
Eine typische Ausführungsform eines Verzögerungselementes (auch Anzündverzögerer genannt) zeigt Abbildung 1 . Der Anzündverzögerer (1 ) besteht aus einem zylindrischen Metallröhrchen (2) und enthält in der Regel drei pyrotechnische Sätze. Das zylindrischeA typical embodiment of a delay element (also called ignition delay) is shown in FIG. The ignition retarder (1) consists of a cylindrical metal tube (2) and usually contains three pyrotechnic sets. The cylindrical one
Metallröhrchen (2) besteht vorzugsweise aus Stahl, Messing oder Aluminium. Eingangsseitig befindet sich der flammempfindliche Anfeuerungssatz (3), der durch das vorgeschaltete Anzündmittel angezündet wird und die Aufgabe hat, den nachfolgenden in der Regel unempfindlicheren Verzögerungssatz (4) sicher anzuzünden. Ausgangsseitig befindet sich nach dem Verzögerungssatz der Abfeuerungssatz (5), der die Übertragung der Reaktion auf das folgende Anzündmittel sicherstellt. Die pyrotechnische Reaktion läuft also linear durch den Anzündverzögerer hindurch. Alle Sätze werden durch ein- oder mehrteilige Lade- und Pressprozesse in den Metallkörper eingebracht. Aus konstruktionstechnischer Sicht der Munition ist es wünschenswert, die unterschiedlichen Verzögerungszeiten mit einer festen Länge des Anzündverzögerers zu realisieren. Da die Menge des Abfeuerungssatzes (5) konstant gehalten werden muss (Sicherstellung einer gleichmäßigen Ausgangsleistung) und auch die Länge der Anfeuerung nur in begrenztem Umfang variiert werden kann, ist die Steuerung der Verzögerungszeit vorzugsweise durch die Satzzusammensetzung zu realisieren. Notwendig ist daher ein Verzögerungssatzsystem, dass durch Feinabstimmung innerhalb seiner Zusammensetzung die Einstellung der gewünschten Verzögerungszeit ermöglicht. Metal tube (2) is preferably made of steel, brass or aluminum. On the input side is the flame-sensitive Anfeuerungssatz (3), which is ignited by the upstream ignition means and has the task to safely ignite the following usually less sensitive delay set (4). On the output side, after the delay set, there is the firing set (5) which ensures the transmission of the reaction to the following firing means. The pyrotechnic reaction thus runs linearly through the ignition retarder. All sets are introduced by one or more parts loading and pressing processes in the metal body. From a design point of view of the ammunition, it is desirable to realize the different delay times with a fixed length of the ignition retarder. Since the amount of the firing set (5) must be kept constant (ensuring a uniform output power) and the length of the firing can be varied only to a limited extent, the control of the delay time is preferably realized by the composition of sentences. What is needed, therefore, is a delay set system that can be fine-tuned within its composition allows the setting of the desired delay time.
Pyrotechnische Verzögerungssätze sind seit Jahrzehnten bekannt und finden auch in der zivilen Sprengtechnik bei sogenannten Sprengzeitzündern Anwendung. Sie bestehen in der Regel aus einem Gemisch von Brennstoff und Oxidationsmittel. Gegenüber den zivilen Anwendungen kommen bei Einsatz in pyrotechnischer Munition zusätzliche Anforderungen hinzu. Das Durchbrennvermögen (also der zuverlässige lineare Abbrand des Pyrotechnic delay sets have been known for decades and are also used in civil blasting technology in so-called explosive detonators. They usually consist of a mixture of fuel and oxidant. Compared to civil applications, additional requirements are added when used in pyrotechnic ammunition. The burn - through capability (ie the reliable linear burnup of the
Verzögerungssatzes) muss über einen großen Temperaturbereich (mindestens -54°C bis +71 °C) und weitgehend unabhängig von den Druckverhältnissen gegeben sein. Dabei sollte die Brenngeschwindigkeit idealerweise keine oder nur eine geringe Abhängigkeit von der Temperatur und dem äußeren Druck aufweisen. Es wird zwischen Anzünd verzögerern in „geschlossener" und„offener" Konstruktion unterschieden. Bei geschlossener Bauweise sind ein auslösendes Element (beispielsweise ein Anzündhütchen) und eine Abdeckung des Abfeuerungssatzes integriert. In offener Konstruktion liegen die Oberflächen der An- und Abfeuerung frei. Die offene Konstruktion verlangt von den verwendeten pyrotechnischen Sätzen eine weitgehende Unabhängigkeit der Brenngeschwindigkeit vom äußeren Druck. Zudem ist eine hohe Stabilität der Verzögerungssätze und Verträglichkeit mit den Delay rate) must be given over a wide temperature range (at least -54 ° C to +71 ° C) and largely independent of the pressure conditions. The burning rate should ideally have no or only a small dependence on the temperature and the external pressure. It is distinguished between ignition retardants in "closed" and "open" construction. When the construction is closed, a triggering element (for example a primer cap) and a cover of the firing kit are integrated. In open design, the surfaces of the firing and firing are free. The open design requires from the used pyrotechnic sets a high degree of independence of the burning speed from the external pressure. In addition, a high stability of the delay rates and compatibility with the
Kontaktmaterialien notwendig, um die lange Lebensdauer zwischen 12 und 20 Jahren zu gewährleisten. In diesem Zeitraum sollte sich die Brenngeschwindigkeit nicht ändern. Contact materials necessary to ensure the long life between 12 and 20 years. During this period, the burning speed should not change.
Pyrotechnische Verzögerungssätze können als Trockenmischung der Ausgangsstoffe oder in einem Nassverfahren unter Zugabe eines Binders als Granulat der Ausgangsstoffe hergestellt werden. Derzeit werden in offenen Anzündverzögerern für militärische Applikationen oftmals pyrotechnische Verzögerungssätze verwendet, die einerseits SVHC-Stoffe (Substances of Very High Concern) enthalten und andererseits einen vergleichsweise deutlichen  Pyrotechnic delay sets can be prepared as a dry mixture of the starting materials or in a wet process with the addition of a binder as granules of the starting materials. At present, pyrotechnic delay sets are often used in open fire retardants for military applications, which on the one hand contain SVHC substances (Substances of Very High Concern) and, on the other hand, a comparatively clear one
Temperaturgang der Brennzeit aufweisen. Ein typischer Vertreter dieser Verzögerungssätze ist ein System bestehend aus Kaliumperchlorat, Bleichromat, Antimon und einem Bindemittel wie Nitrozellulose. Dieser Verzögerungssatz enthält mit Bleichromat einen SVHC-Stoff, der nach Verordnung (EG) Nr. 1907/2006 REACH seit Mai 2015 genehmigungspflichtig ist. Temperature course of the burning time have. A typical representative of these delay sets is a system consisting of potassium perchlorate, lead chromate, antimony and a binder such as nitrocellulose. With Bleichromat, this delay sentence contains an SVHC substance, which has been subject to authorization in accordance with Regulation (EC) No. 1907/2006 REACH since May 2015.
Zudem beträgt der Temperaturgang im verarbeiteten Zustand im Anzündverzögerer ca. 10 bis 20% des Nennwertes der Verzögerungszeit (Temperaturbereich: -54°C bis +71 °C). Zur Steigerung der Präzision der pyrotechnischen Munition ist hier eine deutliche Verbesserung wünschenswert. Die vorliegende Erfindung hat sich zur Aufgabe gestellt, ein pyrotechnisches Verzögerungselement für pyrotechnische Anzündketten anzugeben. Dieses soll: In addition, the temperature response in the processed state in the ignition retarder is approximately 10 to 20% of the nominal value of the delay time (temperature range: -54 ° C to +71 ° C). To increase the precision of the pyrotechnic ammunition a significant improvement is desirable here. The present invention has for its object to provide a pyrotechnic delay element for pyrotechnic ignition chains. This should:
• eine Einstellmöglichkeit der Verzögerungszeit von 0,5 bis 5 s innerhalb einer  • a setting option of the delay time of 0.5 to 5 s within one
Rahmenzusammensetzung des Verzögerungssatzes bei vorgegebener Geometrie und Ausführung des Anzünd verzögerers gestatten,  Frame composition of the delay set with given geometry and execution of the ignition delay permit,
• die Funktionsfähigkeit im Temperaturbereich zwischen -54°C und +71 °C sicherstellen, • ensure functionality in the temperature range between -54 ° C and +71 ° C,
• eine geringe Abhängigkeit der Verzögerungszeit von der Umgebungstemperatur und vom äußeren Druck aufweisen sowie • have a low dependence of the delay time on the ambient temperature and the external pressure and
• die Einhaltung der Verzögerungszeit über einen Zeitraum von mindestens 12 Jahren gewährleisten.  • ensure compliance with the delay over a period of at least 12 years.
Die vorgenannten Ziele werden durch ein Verzögerungselement gelöst, welches in einer Metallhülse ein Anfeuerungssatz-, ein Verzögerungssatz- und ein Abfeuerungssatz-Gemisch enthält, wobei im An- und Abfeuerungssatz-Gemisch mindestens 35 Gewichtsanteile Bor, mindestens 15 Gewichtsanteile Eisen(lll)-oxid und mindestens 5 Gewichtsanteile Kalium- Perchlorat sich jeweils ergänzend zu 100 Gew.-% enthalten sind und in der Mischung des Verzögerungssatzes mindestens 5 Gewichtsanteile Kaliumperchlorat, mindestens 10 The aforementioned objects are achieved by a retarding element which contains in a metal sleeve a Anfeuerungssatz-, a Verzögerungssatz- and a Feuerungssatz mixture, wherein the starting and Feuerungssatz mixture at least 35 parts by weight of boron, at least 15 parts by weight of iron (III) oxide and at least 5 parts by weight of potassium perchlorate are in each case contained in addition to 100 wt .-% and in the mixture of the delay rate at least 5 parts by weight of potassium perchlorate, at least 10
Gewichtsanteile Titan(IV)-oxid, mindestens 25 Gewichtsanteile Wolfram und mindestens 1 Gewichtsanteil Aluminium enthalten sind. In den Mischungen mit einem Mindestgehalt aufgeführte Komponenten und gegebenenfalls mindestens einer weiteren Komponente ergänzen sich zu 100 Gewichtsanteilen. Parts by weight of titanium (IV) oxide, at least 25 parts by weight of tungsten and at least 1 part by weight of aluminum are contained. Components listed in the mixtures with a minimum content and optionally at least one further component supplement each other to 100 parts by weight.
Die vorgenannten Ziele werden auch durch ein Verzögerungselement gelöst, bei dem An- und Abfeuerungssatz-Gemisch aus mindestens 70 Gewichtsanteilen Bleimennige und mindestens 20 Gewichtsanteilen Silizium bestehen. The aforementioned objects are also achieved by a retarding element, in which the starting and firing rate mixture consist of at least 70 parts by weight of red lead and at least 20 parts by weight of silicon.
Vorzugsweise sind in den Mischungen des An- und Abfeuerungssatzes und des Preferably, in the mixtures of the firing and fire set and the
Verzögerungssatzes noch 0,1 - 3 % Gewichtsanteile eines Bindemittels als Zuschlag enthalten. Delay rate still contain 0.1 - 3% by weight of a binder as a surcharge.
Besonders bevorzugt sind in den Mischungen des An- und Abfeuerungssatzes und des Verzögerungssatzes als Bindemittel 0,1 - 3 % Gewichtsanteile Celluloseether (Tylose), Nitrozellulose oder Polyvinylalkohol als Zuschlag enthalten. Die hohe Flexibilität des vorgeschlagenen Verzögerungssatzsystems lässt sich durch Particularly preferred in the mixtures of the firing and firing rate and the delay rate as binder 0.1 - 3% by weight of cellulose ethers (Tylose), nitrocellulose or polyvinyl alcohol are included as a supplement. The high flexibility of the proposed delay set system can be achieved by
Messungen der Verzögerungszeit in Anzünd verzögerern nachweisen. Dazu werden der Verzögerungssatz sowie An- und Abfeuerungssatz in Anzünd verzögerer gemäß Abbildung 1 eingebracht und verdichtet. Dabei bezeichnet (2) die Metallhülse zur Aufnahme der Sätze, (3) den Anfeuerungssatz, (4) den Verzögerungssatz und (5) den Abfeuerungssatz. Detect measurements of the delay time in primer delay. For this purpose, the delay rate as well as the firing rate and the firing rate in the firing delay are shown in Figure 1 introduced and compacted. (2) the metal sleeve for receiving the sets, (3) the firing set, (4) the delay set and (5) the firing set.
Beispielsweise beträgt die Länge der Metallhülse 19 mm bei einem Außendurchmesser von 6 mm und einem Innendurchmesser von 3,6 mm. Die Höhe der Verzögerungssatzsäule beträgt in allen Beispielen 9 mm. An- und Abfeuerung haben eine Höhe von jeweils 5 mm. Die Verzögerungszeit ist dann definiert als Zeit zwischen der Anzündung der Anfeuerungsladung und der Reaktion der Abfeuerungsladung (Abbildung 2). For example, the length of the metal sleeve is 19 mm with an outer diameter of 6 mm and an inner diameter of 3.6 mm. The height of the delay rate column is 9 mm in all examples. Firing and firing have a height of 5 mm each. The delay time is then defined as the time between the initiation of the firing charge and the firing charge reaction (Figure 2).
Die Erfindung wird durch die nachfolgenden Ausführungsbeispiele näher erläutert. Beispiel 1 The invention will be explained in more detail by the following embodiments. example 1
Die bevorzugte Verzögerungszeit von 2,25 s kann beispielsweise mit folgenden The preferred delay time of 2.25 seconds, for example, with the following
pyrotechnischen Sätzen erzielt werden: pyrotechnic sentences are achieved:
Anfeuerungssatz:  Anfeuerungssatz:
Satzmenge: ca. 100 mg  Set amount: approx. 100 mg
Zusammensetzung:  Composition:
Bor 65%  Boron 65%
Eisen(lll)-oxid 25%  Iron (III) oxide 25%
Kaliumperchlorat 10%  Potassium perchlorate 10%
Verzögerungssatz delay charge
• Satzmenge: ca. 320-370 mg  • Set amount: approx. 320-370 mg
• Zusammensetzung:  • composition:
Wolfram 40%  Tungsten 40%
Titan(IV)-oxid 45%  Titanium (IV) oxide 45%
Aluminium 5%  Aluminum 5%
Kaliumperchlorat 10%  Potassium perchlorate 10%
Abfeuerungssatz: Abfeuerungssatz:
• Satzmenge  • set amount
Zusammensetzung:  Composition:
Bor 45%  Boron 45%
Eisen(lll)-oxid 45%  Iron (III) oxide 45%
Kaliumperchlorat 10% Das gewünschte gute Durchbrennvermögen konnte durch die Prüfung von ca. 1000 Anzünd- verzögerern dieser Ausführung nachgewiesen werden. Basierend auf 1000 fehlerfreien Versuchen ergibt sich eine Mindestzuverlässigkeit von 99,7 % (Vertrauensniveau 95 %), welches die üblichen militärischen Anforderungen an solche Komponenten von 99 % deutlich übertrifft. Potassium perchlorate 10% The desired good burn through capability could be proven by testing about 1000 ignition restraints of this design. Based on 1000 error-free tests, a minimum reliability of 99.7% (confidence level 95%) results, which clearly exceeds the usual military requirements for such components of 99%.
Die Abhängigkeit der Brennzeit von der Temperatur wurde anhand der Verzögerungszeit im Anzünd verzögerer im Temperaturbereich zwischen -54°C und +71 °C ermittelt. Sie beträgt im betrachteten Temperaturbereich ca. 8 % bezogen auf die Brenngeschwindigkeit bei Raumtemperatur und liegt damit deutlich unter dem Wert von ca. 10 - 20 % bei bisher üblichen Satzsystemen (z.B. Kaliumperchlorat/Bleichromat/Antimon). The dependence of the firing time on the temperature was determined by the delay time in the firing delay in the temperature range between -54 ° C and +71 ° C. In the temperature range considered, it is about 8%, based on the firing rate at room temperature, and is thus clearly below the value of about 10-20% in conventional typesetting systems (for example potassium perchlorate / lead chromate / antimony).
Die Langzeitstabilität wurde durch stoffliche Untersuchungen und Umweltsimulationsprogramme mit geladenen Anzündverzögerern nachgewiesen. Die Ergebnisse dieser Untersuchungen lassen eine positive Prognose für den Einsatz über mehr als 12 Jahren zu. The long-term stability has been proven by material investigations and environmental simulation programs with charged ignition retarders. The results of these studies suggest a positive prognosis for use over more than 12 years.
Beispiel 2 Example 2
Die Einstellung einer weiteren bevorzugten Verzögerungszeit von 0,6 s ist unter Beibehaltung von An- und Abfeuerung sowie der Höhe der Verzögerungssatzsäule von 9 mm mit folgender Zusammensetzung des Verzögerungssatzes möglich: The setting of a further preferred delay time of 0.6 s is possible while maintaining firing and firing as well as the height of the delay set column of 9 mm with the following composition of the delay set:
• Satzmenge: ca. 320-370 mg  • Set amount: approx. 320-370 mg
• Zusammensetzung:  • composition:
Wolfram 50%  Tungsten 50%
Titan(IV)-oxid 30%  Titanium (IV) oxide 30%
Aluminium 10%  Aluminum 10%
Kaliumperchlorat 10%  Potassium perchlorate 10%
Beispiel 3 Example 3
Die Einstellung einer weiteren bevorzugten Verzögerungszeit von 3,5 s ist unter Beibehaltung von An- und Abfeuerung sowie der Höhe der Verzögerungssatzsäule von 9 mm mit folgender Zusammensetzung des Verzögerungssatzes möglich: The setting of a further preferred delay time of 3.5 s is possible while maintaining firing and firing as well as the height of the delay set column of 9 mm with the following composition of the delay set:
• Satzmenge: ca. 320-370 mg Zusammensetzung • Set amount: approx. 320-370 mg composition
Wolfram 44% Tungsten 44%
Titan(IV)-oxid 41 ,5%Titanium (IV) oxide 41, 5%
Aluminium 2%Aluminum 2%
Kaliumperchlorat 12,5% Potassium perchlorate 12.5%

Claims

Patentansprüche claims
1 . Pyrotechnisches Verzögerungselement, dadurch gekennzeichnet, dass es ein Anfeuerungssatz-, ein Verzögerungssatz- und ein Abfeuerungssatz-Gemisch enthält, wobei im An- und Abfeuerungssatz-Gemisch mindestens 35 Gewichtsanteile Bor, mindestens 15 Gewichtsanteile Eisen(lll)-oxid und mindestens 5 Gewichtsanteile Kaliumperchlorat sich jeweils ergänzend zu 100 Gew.-% enthalten sind und in der Mischung des Verzögerungssatzes mindestens 5 Gewichtsanteile Kaliumperchlorat, mindestens 10 Gewichtsanteile Titan(IV)-oxid, mindestens 25 Gewichtsanteile Wolfram und mindestens 1 Gewichtsanteil Aluminium enthalten sind. 1 . Pyrotechnic retardation element, characterized in that it contains a Anfeuerungssatz-, a Verzögerungssatz- and a Feuerungssatz mixture, said in An- and Feuerungssatz mixture at least 35 parts by weight of boron, at least 15 parts by weight of iron (III) oxide and at least 5 parts by weight of potassium perchlorate itself each contained in addition to 100 wt .-% and in the mixture of the delay rate at least 5 parts by weight of potassium perchlorate, at least 10 parts by weight of titanium (IV) oxide, at least 25 parts by weight of tungsten and at least 1 part by weight of aluminum are included.
2. Pyrotechnisches Verzögerungselement bei dem An- und Abfeuerungssatz-Gemisch aus mindestens 70 Gewichtsanteilen Bleimennige und mindestens 20 Gewichtsanteilen Silizium bestehen, dadurch gekennzeichnet, dass in der Mischung des Verzögerungssatzes mindestens 5 Gewichtsanteile Kaliumperchlorat, mindestens 10 Gewichtsanteile Titan(IV)-oxid, mindestens 25 Gewichtsanteile Wolfram und mindestens 1 Gewichtsanteil Aluminium enthalten sind. 2. pyrotechnic retardation element in the set of firing and firing mixture of at least 70 parts by weight of red lead and at least 20 parts by weight of silicon, characterized in that in the mixture of the delay set at least 5 parts by weight of potassium perchlorate, at least 10 parts by weight of titanium (IV) oxide, at least 25th Parts by weight of tungsten and at least 1 part by weight of aluminum are included.
3. Pyrotechnisches Verzögerungselement nach Anspruch 1 , dadurch gekennzeichnet, dass im An- und Abfeuerungssatz-Gemisch Bor im Gewichtsanteil-Bereich von 35 bis 75 %, Eisen(lll)-oxid im Gewichtsanteil-Bereich von 15 bis 55 % und Kaliumperchlorat im Gewichtsanteil-Bereich von 5 bis 15 % sowie in der Mischung des Verzögerungssatzes 5 - 15 Gewichtsanteile Kaliumperchlorat, 20 - 55 Gewichtsanteile Titan(IV)-oxid, 25 - 55 Gewichtsanteile Wolfram sowie 1 - 10 Gewichtsanteile Aluminium enthalten sind. 3. Pyrotechnic retardation element according to claim 1, characterized in that in the starting and firing rate mixture boron in the weight fraction range of 35 to 75%, iron (III) oxide in the weight fraction range of 15 to 55% and potassium perchlorate in the proportion by weight 5-15% and in the mixture of the delay rate 5-15 parts by weight of potassium perchlorate, 20-55 parts by weight of titanium (IV) oxide, 25-55 parts by weight of tungsten and 1-10 parts by weight of aluminum are included.
4. Pyrotechnisches Verzögerungselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der Mischung des Verzögerungssatzes 5 - 15 Gewichtsanteile Kaliumperchlorat, 20 - 55 Gewichtsanteile Titan(IV)-oxid, 25 - 55 Gewichtsanteile Wolfram sowie 1 - 10 Gewichtsanteile Aluminium enthalten sind. 4. Pyrotechnic retardation element according to claim 1 or 2, characterized in that 5 to 15 parts by weight of potassium perchlorate, 20 to 55 parts by weight of titanium (IV) oxide, 25 to 55 parts by weight of tungsten and 1 to 10 parts by weight of aluminum are contained in the mixture of the delay set.
5. Pyrotechnisches Verzögerungselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der Mischung des An- und Abfeuerungssatzes und/oder des Verzögerungssatzes 0,1 - 3 % Gewichtsanteile eines Bindemittels enthalten sind. 5. Pyrotechnic retardation element according to claim 1 or 2, characterized in that 0.1 to 3% by weight of a binder are contained in the mixture of the firing and firing rate and / or the delay rate.
6. Pyrotechnisches Verzögerungselement nach Anspruch 5, dadurch gekennzeichnet, dass als Bindemittel 0,1 - 3 % Gewichtsanteile Polyvinylalkohol enthalten sind. Pyrotechnisches Verzögerungselement nach Anspruch 5, dadurch gekennzeichnet, dass in der Mischung des Verzögerungssatzes als Bindemittel 0,1 - 3 % Gewichtsanteile Celluloseether enthalten sind. 6. Pyrotechnic retardation element according to claim 5, characterized in that 0.1 to 3% by weight of polyvinyl alcohol are contained as a binder. Pyrotechnic retardation element according to claim 5, characterized in that contained in the mixture of the delay set as a binder 0.1 to 3% by weight of cellulose ethers.
Pyrotechnisches Verzögerungselement nach Anspruch 5, dadurch gekennzeichnet, dass als Bindemittel 0,1 - 3 % Gewichtsanteile Nitrozellulose enthalten sind. Pyrotechnic retarding element according to claim 5, characterized in that 0.1 to 3% by weight of nitrocellulose are contained as binder.
EP15801346.6A 2014-11-10 2015-11-09 Pyrotechnical retarding element Active EP3218331B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014016512 2014-11-10
PCT/EP2015/076096 WO2016075091A1 (en) 2014-11-10 2015-11-09 Pyrotechnical retarding element

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EP3218331A1 true EP3218331A1 (en) 2017-09-20
EP3218331B1 EP3218331B1 (en) 2020-01-01

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EP (1) EP3218331B1 (en)
ES (1) ES2781074T3 (en)
WO (1) WO2016075091A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB628247A (en) * 1944-07-08 1949-08-25 Ensign Bickford Co Improvements in or relating to slow burning compositions and process of producing same
DE1061245B (en) * 1956-12-20 1959-07-09 Dynamit Nobel Ag Short-term delay set for electric ignition
US3028229A (en) * 1958-08-27 1962-04-03 Universal Match Corp Pyrotechnic compositions
DE3028914C1 (en) * 1978-05-24 1991-12-12 Buck Chem Tech Werke Use of a metallothermal heating set for heating high-melting metal fragments in a fire fragment charge
SE446180B (en) * 1981-05-21 1986-08-18 Bofors Ab PYROTECHNICAL DELAY RATE
FR2603576A1 (en) * 1986-09-09 1988-03-11 Bickford Davey PYROTECHNIC COMPOSITION FOR "ANTIGRISOU" SHORT-DELAY DETONATORS
CH676389A5 (en) * 1987-07-29 1991-01-15 Eidgenoess Munitionsfab Thun
SE460848B (en) * 1987-09-29 1989-11-27 Bofors Ab SET TO MAKE PYROTECHNICAL PRE-DRAWING AND RUNNING KITS
EP0847972B1 (en) * 1996-12-13 2002-01-30 RUAG Munition Pyrotechnic delay element, method of manufacture and its use

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ES2781074T3 (en) 2020-08-28
WO2016075091A1 (en) 2016-05-19
EP3218331B1 (en) 2020-01-01

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