EP3658847B1 - Cartouche de projectiles et procédé de fabrication d'une cartouche de projectiles - Google Patents

Cartouche de projectiles et procédé de fabrication d'une cartouche de projectiles Download PDF

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Publication number
EP3658847B1
EP3658847B1 EP17725508.0A EP17725508A EP3658847B1 EP 3658847 B1 EP3658847 B1 EP 3658847B1 EP 17725508 A EP17725508 A EP 17725508A EP 3658847 B1 EP3658847 B1 EP 3658847B1
Authority
EP
European Patent Office
Prior art keywords
projectile
layer
case
cartridge
additive
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.)
Active
Application number
EP17725508.0A
Other languages
German (de)
English (en)
Other versions
EP3658847A1 (fr
Inventor
Michael MUSTER
Markus Bucher
Peter Biedermann
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
RUAG Ammotec 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 RUAG Ammotec AG filed Critical RUAG Ammotec AG
Priority to HRP20211898TT priority Critical patent/HRP20211898T1/hr
Priority to RS20211571A priority patent/RS62739B1/sr
Priority to SI201730998T priority patent/SI3658847T1/sl
Publication of EP3658847A1 publication Critical patent/EP3658847A1/fr
Application granted granted Critical
Publication of EP3658847B1 publication Critical patent/EP3658847B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F42B5/067—Mounting or locking missiles in cartridge cases

Definitions

  • the invention relates to a projectile cartridge with a projectile and a case and with a seal between the projectile and the case, the seal containing a highly viscous sealing medium, in particular a bitumen mixture, as for example in FIG GB2305994 A described.
  • the invention further relates to a method for producing a projectile cartridge with a seal between a projectile and a sleeve, the seal containing a highly viscous sealing medium, in particular a bitumen mixture.
  • seals are required which are absolutely tight over a long period of over 10 years in the case of limited negative or positive pressure and in the event of a planned temperature fire.
  • the seal between the projectile and the sleeve should be done as inexpensively as possible.
  • the seal between the projectile and the case should also ensure high pull-out resistances and be as simple as possible to manufacture in series.
  • Sealing means with a highly viscous sealing medium are generally known from the prior art.
  • viscous sealing medium with an appropriate thinner is applied to the inside of the sleeve.
  • the joining of the projectile into the case pushes part of the applied sealing medium into the case.
  • the remaining sealing medium then creates the seal.
  • the sealing medium is burned.
  • the connection of the projectile and the sleeve by means of the highly viscous sealing medium is force and cohesive.
  • a highly viscous sealing medium is very difficult to handle because of its viscosity and lubricates when the projectile is joined to the case.
  • a projectile cartridge has become known in which a projectile is sealed with a cartridge case by means of a two-component adhesive.
  • the disadvantage of the known bullet cartridges and their manufacture is that the attraction forces should be greater than 400 N if possible.
  • the materials measurement and copper alloys used in particular for the sleeve are not good bonding partners for synthetic adhesives. Therefore, only low tightening forces are possible through the use of the known acrylate adhesives and two-component adhesives. When using synthetic adhesives, the tightening force is only generated by the force-fit connection between the projectile and the case.
  • the invention is based on the problem of developing a projectile cartridge of the type mentioned at the outset in such a way that it enables high pull-out resistances with a small scatter. Furthermore, a method for the production of the projectile cartridge is to be created which enables high pull-out resistances with a small scatter.
  • the first-mentioned problem is solved according to the invention in that the seal has two layers of a highly viscous sealing medium, in particular a bitumen mixture, a first layer of a highly viscous sealing medium, in particular a bitumen mixture, with an additive to increase the sliding properties of the highly viscous sealing medium, in particular a bitumen mixture, and a second layer contains no or a lower proportion of additive than the first layer.
  • the second layer ensures the sealing performance of the bullet cartridge.
  • the first layer protects the second layer from shearing off when the projectile is joined to the case.
  • the projectile cartridge is therefore particularly tightly sealed. Since the adhesive properties of the highly viscous sealing medium on the material of the sleeve are significantly higher than with the acrylate adhesive according to the prior art, the projectile is also held in a materially bonded manner.
  • the second layer creates a uniform first layer with the additive, which keeps the spread of the pull-out resistances and the speed ranges of the bullet cartridge particularly low.
  • the highly viscous sealing medium is preferably mixed with a suitable thinner.
  • the bullet cartridge can be manufactured particularly inexpensively if the highly viscous sealing medium is a bitumen mixture.
  • shearing of the first layer when joining the projectile into the case can be avoided if the two layers are sandwiched on top of each other and when the first layer faces the projectile and the second layer faces the case.
  • the additive contains graphite.
  • graphite as an additive is particularly inexpensive and easy to process.
  • Graphite is also resistant to high temperatures and is retained even if the bitumen is burned when it is fired. This improves the sliding properties when firing.
  • a particularly small spread of the pull-out resistances can easily be ensured if the mixing ratio of bitumen to graphite in the first layer corresponds to 2.5 to 3.
  • This choice of material means that the bitumen is burned when it is fired and the graphite remains and creates a high-temperature-resistant sliding layer.
  • the first layer can preferably also be used as an additive.
  • the sealing media are particularly advantageous. According to another advantageous development of the invention, high pull-out resistances with small scatter are achieved if the first layer contains 48-35% by weight bitumen, 8-25% by weight graphite and the remainder thinner and / or if the second layer contains 55-75% by weight of bitumen and 45-25% by weight of thinner.
  • the second problem namely the creation of a method for producing the bullet cartridge, which enables high pull-out resistances with low scattering, is solved according to the invention in that two layers of bitumen are applied one behind the other before joining the projectile to the case on the projectile or the case, wherein the layer closest to the opposite component of the projectile or the sleeve has an additive to increase the sliding properties of the bitumen.
  • This design creates two layers between the projectile and the case, one layer contributing to the creation of a high level of tightness and the layer provided with the additive ensuring a low spread of the pull-out resistance.
  • smearing of the layers can easily be avoided if the two layers are applied to the inside of the sleeve, with a first layer located closer to the edge of the sleeve not containing the additive and a second layer located deeper in the sleeve or contains a lower proportion of additive than the first layer.
  • the first layer provided with the additive is pressed against the other second layer.
  • the first layer provided with the additive is smoothed out and thus creates a particularly homogeneous layer.
  • Figure 1 shows a projectile 1 and a case 2 before being joined to one in Figure 3 projectile cartridge 3 shown.
  • the sleeve 2 is shown in a longitudinal section.
  • Two layers 4, 5 are applied to the inside of the sleeve 2.
  • a first layer 4 arranged closer to the free edge of the sleeve 2 contains bitumen mixed with an additive.
  • a second layer 5 located deeper in the sleeve 2 contains bitumen without an additive.
  • the layers 4, 5 can be created in one operation with a suitable tool, preferably by means of spray technology.
  • the first layer 4 has 42% by weight bitumen, 42% by weight thinner and 16% by weight graphite. For the width of the first layer 4 of approximately 1 mm, an amount of approximately 0.7 mg is sufficient.
  • the second layer 5 contains 66% by weight of bitumen and 34% by weight of thinner. For the width of the second layer 5 of 3 mm, the amount used is approximately 0.8 mg.
  • the distance between the two layers 4, 5 is less than 1.5 mm.
  • Figure 2 shows the projectile 1 and the case 2 from Figure 1 during joining. It can be seen here that the first layer 4 provided with additive is pressed against the second layer 5. The second layer 5 prevents the additive-provided first layer 4 from being pushed in.
  • Figure 3 shows the projectile cartridge 3 produced with the method in a highly schematic manner. It can be seen here that the two layers 4, 5 create a seal 6 of the projectile 1 with respect to the case 2.
  • Figure 4 shows a force-expansion diagram of pull-out resistances of several projectile cartridges 3.
  • the spread of the pull-out resistances of different projectile cartridges is particularly small.
  • the projectile cartridges 3 according to the invention have an initial pull-out resistance of over 600N.
  • Figure 5 shows a force-expansion diagram of pull-out resistances of several projectile cartridges, which according to the state of the art only have a non-positive connection of the projectile 1 with the case 2.
  • the comparison of the Figures 4 and 5 shows that the course of the purely frictional connection according to Figure 5 is noticeably more uneven over the stretch.
  • the initial pull-out resistance in the purely frictional connection is only half of the pull-out resistance of the bullet cartridge 3 according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Sealing Material Composition (AREA)
  • Continuous Casting (AREA)

Claims (10)

  1. Cartouche à projectile (3) avec un projectile (1) et un étui (2) et avec un joint d'étanchéité (6) entre le projectile (1) et l'étui (2), sachant que le joint d'étanchéité (6) contient un milieu d'étanchéité à viscosité élevée, en particulier un mélange bitumineux, caractérisée en ce que le joint d'étanchéité (6) comporte deux couches (4, 5) de milieu d'étanchéité, sachant qu'une première couche (4) contient le milieu d'étanchéité avec un additif destiné à augmenter les propriétés de glissement du milieu d'étanchéité et une deuxième couche (5) ne contient aucun additif ou une portion plus faible en aditif que la première couche (4).
  2. Cartouche à projectile selon la revendication 1, caractérisée en ce que les deux couches (4, 5) se situent l'une sur l'autre en sandwich et en ce que la première couche (4) est tournée vers le projectile (1) et la deuxième couche (5) est tournée vers l'étui (2).
  3. Cartouche à projectile selon la revendication 1 ou 2, caractérisée en ce que les deux couches (4, 5) font le tour du projectile (1).
  4. Cartouche à projectile selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'additif contient du graphite.
  5. Cartouche à projectile selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le rapport de mélange, bitume - graphite correspond à 2,5 à 3 dans la première couche.
  6. Cartouche à projectile selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la première couche (4) contient 48 - 35 % /poids de bitume et 8 - 25 % / poids graphite et un sdiluant pour le reste.
  7. Cartouche à projectile selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la deuxième couche (5) contient 55 - 75 % /poids de bitume et 45 - 25 % / poids de diluant.
  8. Cartouche à projectile selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'additif contient du bisulfure de molybdène, du nitrure de bore ou du Téflon.
  9. Procédé de fabrication d'une cartouche à projectile (3) avec un joint d'étanchéité (6) d'un projectile (1) par rapport à un étui (2), sachant que le joint d'étanchéité (6) contient un milieu d'étanchéité à viscosité élevée, en particulier un mélange bitumineux, caractérisé en ce qu'avant l'assemblage du projectile (1) avec l'étui (2), deux couches d'étanchéification à viscosité élevée (4, 5), en particulier un mélange bitumineux, sont appliquées l'une derrière l'autre sur le projectile (1) ou l'étui (2), sachant que la couche (4) suivant le composant opposé du projectile (1) ou de l'étui (2) comporte un additif destiné à augmenter les propriétés de glissement du milieu d'étanchéification à viscosité élevée, en particulier un mélange bitumineux.
  10. Procédé selon la revendication 9, caractérisé en ce que les deux couches (4, 5) sont appliquées sur le côté intérieur de l'étui (2), sachant qu'une première couche (4) disposée plus proche du bord de l'étui (2) contient l'additif et une deuxième couche (5) disposée plus profondément dans l'étui (2) ne contient pas d'additif ou une portion plus faible que la première couche (4).
EP17725508.0A 2016-05-18 2017-05-02 Cartouche de projectiles et procédé de fabrication d'une cartouche de projectiles Active EP3658847B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
HRP20211898TT HRP20211898T1 (hr) 2016-05-18 2017-05-02 Patrona projektila i postupak za proizvodnju patrone projektila
RS20211571A RS62739B1 (sr) 2016-05-18 2017-05-02 Patrona za projektil i postupak proizvodnje patrone za projektil
SI201730998T SI3658847T1 (sl) 2016-05-18 2017-05-02 Strelni naboj in postopek za proizvodnjo strelnega naboja

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16001124.3A EP3246656A1 (fr) 2016-05-18 2016-05-18 Cartouche de projectiles et procede de fabrication d'une cartouche de projectiles
PCT/EP2017/000541 WO2017198328A1 (fr) 2016-05-18 2017-05-02 Cartouche de projectile et procédé de production d'une cartouche de projectile

Publications (2)

Publication Number Publication Date
EP3658847A1 EP3658847A1 (fr) 2020-06-03
EP3658847B1 true EP3658847B1 (fr) 2021-09-22

Family

ID=56068594

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16001124.3A Withdrawn EP3246656A1 (fr) 2016-05-18 2016-05-18 Cartouche de projectiles et procede de fabrication d'une cartouche de projectiles
EP17725508.0A Active EP3658847B1 (fr) 2016-05-18 2017-05-02 Cartouche de projectiles et procédé de fabrication d'une cartouche de projectiles

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16001124.3A Withdrawn EP3246656A1 (fr) 2016-05-18 2016-05-18 Cartouche de projectiles et procede de fabrication d'une cartouche de projectiles

Country Status (8)

Country Link
EP (2) EP3246656A1 (fr)
DK (1) DK3658847T3 (fr)
HR (1) HRP20211898T1 (fr)
HU (1) HUE056826T2 (fr)
LT (1) LT3658847T (fr)
RS (1) RS62739B1 (fr)
SI (1) SI3658847T1 (fr)
WO (1) WO2017198328A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020149909A1 (fr) * 2018-10-22 2020-07-23 Harry Arnon Procédé permettant d'assurer une dispersion balistique variable et réglable dans des armes automatiques
DE102021103150A1 (de) 2021-02-10 2022-08-11 Ruag Ammotec Ag Geschosspatrone, Verfahren zur Herstellung einer Geschosspatrone und Anlage zur Herstellung von Geschosspatronen
DE102022119670A1 (de) * 2022-08-04 2024-02-15 Ruag Ammotec Ag Anlage zum automatisierten Fertigen von Munition
DE102024118059A1 (de) 2024-06-26 2025-12-31 Rheinmetall Waffe Munition Gmbh Geschosspatrone und Verfahren zur Herstellung einer Geschosspatrone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR672990A (fr) * 1928-04-26 1930-01-09 Dispositif d'étanchéité impérative à la naissance des rayures dans les canons tirant des munitions à douille solidaire du projectile
DE2210869C3 (de) * 1972-03-07 1978-11-30 Dynamit Nobel Ag, 5210 Troisdorf Lösbare Verbindung zwischen Geschoß und Treibladungshülse
DE3938122C2 (de) 1989-11-16 1993-09-30 Diehl Gmbh & Co Geschoßpatrone
GB2305994B (en) * 1995-10-03 1998-12-16 Nat Starch Chem Invest An explosive device
DE19823971A1 (de) 1997-05-28 1998-12-03 Dynamit Nobel Ag Verfahren zur Herstellung einer Patrone aus einer Hülse und einem Geschoß
DE19754980C1 (de) * 1997-12-11 1999-05-06 Walter Gehmann Patronenhülse für Feuerwaffen

Also Published As

Publication number Publication date
WO2017198328A1 (fr) 2017-11-23
SI3658847T1 (sl) 2022-01-31
EP3658847A1 (fr) 2020-06-03
LT3658847T (lt) 2022-01-10
HUE056826T2 (hu) 2022-03-28
HRP20211898T1 (hr) 2022-03-04
DK3658847T3 (en) 2021-12-20
EP3246656A1 (fr) 2017-11-22
RS62739B1 (sr) 2022-01-31

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