EP2106526A1 - Molded part, and method for the production of the molded part - Google Patents

Molded part, and method for the production of the molded part

Info

Publication number
EP2106526A1
EP2106526A1 EP07847024A EP07847024A EP2106526A1 EP 2106526 A1 EP2106526 A1 EP 2106526A1 EP 07847024 A EP07847024 A EP 07847024A EP 07847024 A EP07847024 A EP 07847024A EP 2106526 A1 EP2106526 A1 EP 2106526A1
Authority
EP
European Patent Office
Prior art keywords
molded part
inert
energetic
felt
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
EP07847024A
Other languages
German (de)
French (fr)
Other versions
EP2106526B1 (en
Inventor
Walter Lebacher
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.)
Nitrochemie Aschau GmbH
Original Assignee
Nitrochemie Aschau GmbH
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 Nitrochemie Aschau GmbH filed Critical Nitrochemie Aschau GmbH
Publication of EP2106526A1 publication Critical patent/EP2106526A1/en
Application granted granted Critical
Publication of EP2106526B1 publication Critical patent/EP2106526B1/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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F42B5/188—Manufacturing processes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F42B5/192—Cartridge cases characterised by the material of the casing wall

Definitions

  • Certain parts of a cartridge, especially with a combustible sleeve, are made of inert material. Thus, such inert materials are provided at joints between the drive and projectile.
  • Non-flammable inert molded parts must be removed erosively by mechanical action of the TLP bodies and the hot gases.
  • corresponding connecting parts which are known as cartridge caps in 120 mm cartridges, must be disassembled during firing and / or so weakened by erosion that only fractions remain. This is usually done with pressure increase and formation of hot gases in the cargo space. The destroyed parts are then flushed with the gas flow from cargo space and gun barrel.
  • the action of the combustion gases is not always sufficient, so that larger and especially thicker residual pieces remain in the cargo space as residues or can adhere to the cone piece between the cargo space and the pipe.
  • the additional use of polyethanes in the moldings to form a corresponding strength counteracts the desired Abtragungsmechanismen.
  • the invention takes on the task to eliminate the aforementioned problems, in particular to increase the safety of the weapon.
  • the invention is based on the idea to reduce the proportion of the inert material to a necessary minimum, in particular in the connection zone or at the connection point between drive and projectile. For this purpose, it is provided to carry out these moldings in a so-called layered construction, which can be realized in the felting process.
  • zones of the molded parts are mixed with energetic fiber material, preferably nitrocellulose. These zones are built only on the propellant charge powder facing molding side. However, all safety-relevant areas, such as contact points with the holder in the ammunition container, bearing surfaces in the tower bunker, connections of bullets, etc. remain completely inert.
  • the erosion of the surface in the propellant charge space is supported by the hot gases when shooting on the molded part inside.
  • the remaining amount of inert material is easier and more completely decomposed.
  • the size and mass of the residual parts is significantly reduced and can be easily flushed out of the charge space by the gas flow.
  • This form of sandwich is realized in the flooding process by various accumulations of pulps. As is known, such a system is subdivided into flooding chambers. Only in the chambers, where an inert coating is to take place, this inert recipe is added.
  • FIGURE shows a detail of a molded part 1 which has a felt 3 with an energetic material 4 and an inert material 5 in a predefined area 2 or a predefined partial zone.
  • the felting process it is provided to apply a felt 3 with energetic formulation to the previously defined area 2.
  • a felt 3 with energetic formulation to the previously defined area 2.
  • the entire suction surface is released and the final raw felt form is formed.
  • an inert recipe is selected for the second process step.
  • a two-head system with dip felter and felt zone control is used.
  • the felting is done by vacuum and timing.
  • the pulp concentration is adjusted to the fiber formulation.
  • a so-called cartridge cover (molded part 1) with different internal, preferably combustible, and outer material, preferably inert, can be constructed.
  • an inert material for example, a nitrocellulose-free mixture, for example, from pulp and groundwood, can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

To increase the function and safety of a weapon, it is proposed that the molded part (1), as connecting site particularly between a projectile and a preferably combustible sleeve containing a driving mechanism, be constructed in such a way that, in a predefined region (2), said molded part (1) has a felt (3) with an energetic material (4) and/or an inert material (5).

Description

BESCHREIBUNG DESCRIPTION
Formteil sowie Verfahren zum Herstellen des FormteilsMolded part and method for producing the molded part
Bestimmte Teile einer Patrone, insbesondere mit verbrennbarer Hülse, werden aus inertem Material hergestellt. So sind an Verbindungsstellen zwischen Antrieb und Geschoss derartige inerte Materialien vorgesehen.Certain parts of a cartridge, especially with a combustible sleeve, are made of inert material. Thus, such inert materials are provided at joints between the drive and projectile.
Für die Auswahl von explosivstofffreiem Material sind dabei zwei Gründe maßgebend. So hat sich die Festigkeit des nicht brennbaren Formteils in Verbindung mit den verwendeten Klebstoffen am zu befestigenden Geschossheckteil bewährt. Weitaus wichtiger ist jedoch, dass inertes Material schwer entflammbar ist.Two reasons are decisive for the selection of explosive-free material. Thus, the strength of the non-combustible molded part in conjunction with the adhesives used has proven to be on the attached tailgate. More important, however, is that inert material is flame retardant.
Nicht brennbare inerte Formteile müssen durch mechanische Einwirkung der TLP- Körper und die heißen Gase erosiv abgetragen werden. Das bedeutet, entsprechende Verbindungsteile, die bei 120 mm Patronen als Kartuschendeckel bekannt sind, müssen beim Schuss zerlegt und / oder durch Erosion so geschwächt werden, dass nur Bruchteile übrig bleiben. Dieses erfolgt in der Regel bei Druckanstieg und Bildung heißer Gase im Ladungsraum. Die zerstörten Teile werden dann mit der Gasströmung aus Ladungsraum und Waffenrohr gespült. Die Einwirkung der Verbrennungsgase ist jedoch nicht immer ausreichend, so dass größere und insbesondere dickere Reststücke im Ladungsraum als Rückstände verbleiben bzw. am Kegelstück zwischen Ladungsraum und Rohr anhaften können. Die zusätzliche Verwendung von Polyethanen in den Formteilen zur Ausbildung einer entsprechenden Festigkeit wirkt hingegen den gewünschten Abtragungsmechanismen entgegen.Non-flammable inert molded parts must be removed erosively by mechanical action of the TLP bodies and the hot gases. This means that corresponding connecting parts, which are known as cartridge caps in 120 mm cartridges, must be disassembled during firing and / or so weakened by erosion that only fractions remain. This is usually done with pressure increase and formation of hot gases in the cargo space. The destroyed parts are then flushed with the gas flow from cargo space and gun barrel. However, the action of the combustion gases is not always sufficient, so that larger and especially thicker residual pieces remain in the cargo space as residues or can adhere to the cone piece between the cargo space and the pipe. The additional use of polyethanes in the moldings to form a corresponding strength, however, counteracts the desired Abtragungsmechanismen.
Ein weiteres Problem ergibt sich dadurch, dass in einem Munitionsbehälter sowie im Bereitstellungsraum einer Waffe die Patrone an dieser Verbindungsstelle aber direkten Kontakt mit Haltevorrichtungen oder dergleichen hat. Unter den Bedingungen der relativ rauen Handhabung schwerer Patronen und zusätzlicher Umweltbelastungen können Vibration und damit verbunden mechanische Beanspruchungen an diesen Stellen eine mögliche Gefahrenquelle für die Funktion der Patrone im Ladungsraum der Waffe bilden. Dies hat zur Folge, dass die Waffenfunktion und die Sicherheit beeinträchtigt sind, da unter Umständen die nächste Pat- rone nicht mehr ladbar ist oder die glimmenden Restpartikel des Kartuschendeckels die nächste Patrone zur früh entzünden könnten.Another problem arises from the fact that in an ammunition container as well as in the staging area of a weapon, the cartridge has direct contact with holding devices or the like at this connection point. Under conditions of relatively harsh handling of heavy cartridges and additional environmental stresses, vibration and associated mechanical stresses at these locations can be a potential source of danger to the function of the cartridge in the cargo hold of the weapon. As a result, weapon function and security are compromised, as the next patch may rone is no longer chargeable or the smoldering residual particles of the cartridge cover could ignite the next cartridge to early.
Hier greift die Erfindung die Aufgabe auf, die vorgenannten Probleme zu eliminieren, um so insbesondere die Sicherheit der Waffe zu erhöhen.Here, the invention takes on the task to eliminate the aforementioned problems, in particular to increase the safety of the weapon.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen aufgeführt. Ein Verfahren zur Herstellung eines derartigen Formteils beschreibt Patentanspruch 5.The problem is solved by the features of claim 1. Advantageous embodiments are listed in the subclaims. A method for producing such a molding is described in claim 5.
Der Erfindung liegt die Idee zugrunde, den Anteil des inerten Materials insbesondere in der Verbindungszone bzw. an der Verbindungsstelle zwischen Antrieb und Geschoss auf ein notwendiges Minimum zu reduzieren. Dazu ist vorgesehen, diese Formteile in einer so genannten Schichtbauweise auszuführen, was im Verfilzungsprozess realisiert werden kann.The invention is based on the idea to reduce the proportion of the inert material to a necessary minimum, in particular in the connection zone or at the connection point between drive and projectile. For this purpose, it is provided to carry out these moldings in a so-called layered construction, which can be realized in the felting process.
Das bedeutet, dass die Masse des inerten Materials auf das für die Festigkeit nötige Mengenmaß reduziert wird, wobei die Geometrie der Patrone selbst nicht verändert werden muss.This means that the mass of the inert material is reduced to the quantity required for the strength, whereby the geometry of the cartridge itself does not have to be changed.
Im Patroneninneren wird die Einwirkung der heißen Gase deutlich verbessert und die innenballistischen Eigenschaften können dem Gesamtkonzept angepasst werden. Sicherheitsrelevante Zonen bleiben im Bereich von Kontaktstellen vollständig inert. Die zu erodierenden Innenflächen sind für die entstehenden Verbrennungsgase früher und leichter zugänglich. Noch vorhandene Restteile sind gering und folglich durch die Gasströmung leichter auswaschbar.In the interior of the cartridge, the effect of the hot gases is significantly improved and the internal ballistic properties can be adapted to the overall concept. Safety-relevant zones remain completely inert in the area of contact points. The inner surfaces to be eroded are earlier and easier to access for the resulting combustion gases. Remaining residual parts are small and consequently easier to wash out due to the gas flow.
Dazu werden genau definierte Zonen der Formteile mit energetischem Fasermaterial, vorzugsweise Nitrozellulose, versetzt. Diese Zonen werden nur auf der dem Treibladungspulver zugewandten Formteilseite aufgebaut. Alle sicherheitsrelevanten Bereiche, wie Kontaktstellen mit der Halterung im Munitionsbehälter, Auflageflächen im Turmbunker, Anbindungen von Geschossteilen etc. bleiben jedoch vollständig inert.For this purpose, precisely defined zones of the molded parts are mixed with energetic fiber material, preferably nitrocellulose. These zones are built only on the propellant charge powder facing molding side. However, all safety-relevant areas, such as contact points with the holder in the ammunition container, bearing surfaces in the tower bunker, connections of bullets, etc. remain completely inert.
Durch diese Lösung wird auch den zukünftigen Entwicklungen Rechnung getragen, dass leistungsgesteigerte Antriebe in Hochleistungsmunitionen Anwendung finden werden. Hier besteht nämlich das erkennbare Problem, dass zusätzliche Additive mit erosionsmindernden Eigenschaften zur Rohrschonung aus innerballistischer Sicht das Abtragen der inerten Kartuschendeckel behindern könnten. Es wird in den definierten Zonen eine Schichtbauweise herangezogen. Dies ermöglicht, dass Schichttiefe, Fläche und Rezeptur des Formteils auf das verwendete Treibladungspulver zu einem Gesamtkonzept abgestimmt werden kann.This solution will also take into account the future developments that higher performance drives in high performance munitions will be used. The obvious problem here is that additional additives with erosion-reducing properties for protecting the pipe from an inner-ballistic point of view could hinder the removal of the inert cartridge cover. It is used in the defined zones a layered construction. This makes it possible that layer depth, area and formulation of the molding can be matched to the propellant used powder to an overall concept.
Die Erosion der Oberfläche im Treibladungsraum wird durch die heißen Gase beim Schuss auf der Formteilinnenseite unterstützt. Die verbleibende Restmenge an inertem Material wird leichter und vollständiger zerlegt. Die Größe und Masse der Restteile wird deutlich gemindert und kann durch den Gasstrom leichter aus dem Ladungsraum gespült werden.The erosion of the surface in the propellant charge space is supported by the hot gases when shooting on the molded part inside. The remaining amount of inert material is easier and more completely decomposed. The size and mass of the residual parts is significantly reduced and can be easily flushed out of the charge space by the gas flow.
In Bezug auf Laborierung und Anbindung der einzelnen Bestandteile für Antrieb und Ge- schoss sind neue Wege gehbar, können durch neue Varianten ersetzt werden.With regard to the laboratory and the connection of the individual components for the drive and the floor, new approaches are possible and can be replaced by new variants.
Diese Sandwichtform wird im Flutungsprozess durch verschiedene Anlagerungen der Pulpen realisiert. Bekanntlich ist eine derartige Anlage in Flutungskammern unterteilt. Nur in den Kammern, wo auch eine inerte Beschichtung erfolgen soll, wird diese inerte Rezeptur zugegeben.This form of sandwich is realized in the flooding process by various accumulations of pulps. As is known, such a system is subdivided into flooding chambers. Only in the chambers, where an inert coating is to take place, this inert recipe is added.
Anhand eines Ausführungsbeispiels mit Zeichnung soll die Erfindung näher erläutert werden. Es zeigt die einzige Figur eine Ausschnittsdarstellung eines Formteils 1 , welches in einem vordefinierten Bereich 2 bzw. einer vordefinierten Teilzone einen Filz 3 mit einem energetischen Material 4 und einem inerten Material 5 aufweist.Reference to an embodiment with drawing, the invention will be explained in more detail. The single FIGURE shows a detail of a molded part 1 which has a felt 3 with an energetic material 4 and an inert material 5 in a predefined area 2 or a predefined partial zone.
Im Verfilzungsprozess ist dabei vorgesehen, auf dem vorher definierten Bereich 2 einen Filz 3 mit energetischer Rezeptur aufzubringen. Ist die benötigte Masse an Fasermaterial 3 aufgebracht, erfolgt die Freigabe der gesamten Ansaugfläche und die endgültige Rohfilzform wird gebildet. Für den zweiten Prozessschritt wird eine inerte Rezeptur gewählt.In the felting process, it is provided to apply a felt 3 with energetic formulation to the previously defined area 2. When the required mass of fiber material 3 has been applied, the entire suction surface is released and the final raw felt form is formed. For the second process step, an inert recipe is selected.
Verwendet wird dazu beispielsweise eine Zweikopfanlage mit Tauchverfilzer und Filzzonensteuerung. Die Filzbildung erfolgt durch Vakuum und Zeitsteuerung. Die Pülpenkonzentration wird auf die Faserrezeptur abgestimmt.For example, a two-head system with dip felter and felt zone control is used. The felting is done by vacuum and timing. The pulp concentration is adjusted to the fiber formulation.
Durch diese Fertigungsart wird erreicht, dass ein so genannter Kartuschendeckel (Formteil 1) mit unterschiedlichem Innen-, vorzugsweise verbrennbar, und Außenmaterial, vorzugsweise inert, aufgebaut werden kann. Als inertes Material ist beispielsweise ein nitrozellulosefreies Gemisch, beispielsweise aus Zellstoff und Holzschliff, einsetzbar. By this type of production is achieved that a so-called cartridge cover (molded part 1) with different internal, preferably combustible, and outer material, preferably inert, can be constructed. As an inert material, for example, a nitrocellulose-free mixture, for example, from pulp and groundwood, can be used.

Claims

Patentansprüche claims
1. Formteil (1) als Verbindungsstelle insbesondere zwischen einem Geschoss und einer einen Antrieb enthaltenen vorzugsweise verbrennbaren Hülse, dadurch gekennzeichnet, dass dieses in einem vordefinierten Bereich (2) einen Filz (3) mit einem e- nergetischen Material (4) und/ oder einem inerten Material (5) aufweist.1. molding (1) as a connection point in particular between a projectile and a drive preferably combustible sleeve, characterized in that this in a predefined area (2) a felt (3) with an e- nergetic material (4) and / or an inert material (5).
2. Formteil nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) mit unterschiedlichem Innenmaterial (4), vorzugsweise verbrennbar, und Außenmaterial, vorzugsweise inert (5), aufgebaut ist.2. Molding according to claim 1, characterized in that the molded part (3) with different inner material (4), preferably combustible, and outer material, preferably inert (5) is constructed.
3. Formteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als inertes Material (5) ein nitrozellulosefreies Material, wie beispielsweise Zellstoff und Holzschliff, und als energetisches Grundmaterial (4) ein nitrozellulosehaltiges Material vorgesehen ist.3. Molding according to claim 1 or 2, characterized in that as inert material (5) a nitrocellulose-free material, such as pulp and groundwood, and as an energetic base material (4) a nitrocellulose-containing material is provided.
4. Formteil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Aufbau des Formteils (3) in einer Art Schichtaufbau gestaltet ist.4. Molding according to one of claims 1 to 3, characterized in that the structure of the molded part (3) is designed in a kind of layer structure.
5. Verfahren zum Herstellen eines Formteils nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass im Verfilzungsprozess auf einem vorher definierten Bereich (2) ein Filz (3) aus einem energetischen Material (4) gebildet wird und dann, wenn die benötigte Masse an Fasermaterial (4) aufgebracht ist, für den zweiten Prozessschritt ein inertes Material (5) gewählt wird, welches auf das energetische Material (4) aufgebracht wird. 5. A method for producing a molded part according to one of claims 1 or 2, characterized in that in the felting process on a previously defined area (2) a felt (3) of an energetic material (4) is formed and then, if the required mass is applied to fiber material (4), for the second process step, an inert material (5) is selected, which is applied to the energetic material (4).
EP07847024.2A 2007-01-04 2007-12-07 Molded part, and method for the production of the molded part Active EP2106526B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007001655A DE102007001655A1 (en) 2007-01-04 2007-01-04 Molded part and method for producing the molded part
PCT/EP2007/010676 WO2008080506A1 (en) 2007-01-04 2007-12-07 Molded part, and method for the production of the molded part

Publications (2)

Publication Number Publication Date
EP2106526A1 true EP2106526A1 (en) 2009-10-07
EP2106526B1 EP2106526B1 (en) 2014-02-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07847024.2A Active EP2106526B1 (en) 2007-01-04 2007-12-07 Molded part, and method for the production of the molded part

Country Status (7)

Country Link
US (1) US8763534B2 (en)
EP (1) EP2106526B1 (en)
KR (1) KR101513740B1 (en)
DE (1) DE102007001655A1 (en)
ES (1) ES2461767T3 (en)
WO (1) WO2008080506A1 (en)
ZA (1) ZA200903778B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9230815B2 (en) * 2012-10-26 2016-01-05 Appled Materials, Inc. Methods for depositing fluorine/carbon-free conformal tungsten

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3901153A (en) * 1972-10-04 1975-08-26 Us Air Force Wrapped laminated felted monolithic combustible cartridge case
US3823668A (en) * 1972-10-19 1974-07-16 Us Air Force Duplex combustible cartridge case
DE2323244C3 (en) * 1973-05-09 1979-04-19 Rheinmetall Gmbh, 4000 Duesseldorf Wing-stabilized sub-caliber bullet
DE3008999A1 (en) 1974-06-14 1981-09-24 Wilhelm Dipl.-Chem. Dr. 5400 Koblenz Oversohl Combustible munition components formed from fibrous slurries - by feeding different compositions of slurry to different parts of mandrel
DE3008996A1 (en) 1980-03-08 1981-09-24 Wilhelm Dipl.-Chem. Dr. 5400 Koblenz Oversohl Munition cartridges formed from fibrous slurries - with woven inlay rolled in during felting process
DE3619960A1 (en) 1986-06-13 1987-12-17 Rheinmetall Gmbh DRIVE CHARGE
US5138949A (en) * 1990-09-20 1992-08-18 Olin Corporation Combustible ammunition cartridge case
US5323707A (en) 1991-08-05 1994-06-28 Hercules Incorporated Consumable low energy layered propellant casing
DE4318740C2 (en) 1993-06-05 1998-03-12 Rheinmetall Ind Ag Ammunition unit

Non-Patent Citations (1)

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Title
See references of WO2008080506A1 *

Also Published As

Publication number Publication date
WO2008080506A1 (en) 2008-07-10
ES2461767T3 (en) 2014-05-21
ZA200903778B (en) 2010-06-30
DE102007001655A1 (en) 2008-07-10
EP2106526B1 (en) 2014-02-19
US8763534B2 (en) 2014-07-01
US20100018429A1 (en) 2010-01-28
KR20090106491A (en) 2009-10-09
KR101513740B1 (en) 2015-04-20

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