EP4163584A1 - Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement - Google Patents

Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement Download PDF

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Publication number
EP4163584A1
EP4163584A1 EP21200833.8A EP21200833A EP4163584A1 EP 4163584 A1 EP4163584 A1 EP 4163584A1 EP 21200833 A EP21200833 A EP 21200833A EP 4163584 A1 EP4163584 A1 EP 4163584A1
Authority
EP
European Patent Office
Prior art keywords
component
reactive material
base component
processing area
zirconium
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.)
Pending
Application number
EP21200833.8A
Other languages
German (de)
English (en)
Inventor
Raphael Dr. Gutser
Jakob Breiner
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.)
TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
Original Assignee
TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
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 TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH filed Critical TDW Gesellschaft fuer Verteidigungstechnische Wirksysteme mbH
Priority to EP21200833.8A priority Critical patent/EP4163584A1/fr
Publication of EP4163584A1 publication Critical patent/EP4163584A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/44—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of incendiary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor

Definitions

  • the present invention relates to a method for post-processing a base component of a projectile, in particular a guided missile, a warhead or ammunition, and a component of a projectile, in particular a guided missile, a warhead or ammunition, with a base component post-processed in this way.
  • Reactive materials contain an oxidizing agent, e.g. B. a fluoropolymer, and a metal. Linings or fragments in warheads, for example, were made from it.
  • the use of reactive materials in such components can increase the energy available upon detonation of the warhead.
  • the pamphlet AU2015 255003A1 for example describes a reactive composite material for use in an ammunition having a metal lattice structure with interstices and a powder in these interstices.
  • the powder comprises at least one metal powder and/or at least one halogen-containing polymer powder.
  • a method for post-processing a base component of a projectile in particular a guided missile, a warhead or ammunition.
  • the method comprises the steps of providing a base component and applying a reactive material with a material property that can be activated by a predetermined stimulus to a predetermined processing area of the base component in such a way that the reactive material is bonded to the base component.
  • a component of a projectile in particular a guided missile, a warhead or ammunition
  • the part includes a base component with a predetermined workspace.
  • the component has a reactive material, which has a material property that can be activated by a predetermined stimulus, the reactive material being applied to the processing area and being materially connected to the base component.
  • One of the ideas on which the present invention is based is to use an already existing component, hereinafter referred to as the basic component Properties and/or whose product lifespan behavior are known or tested are provided with a reactive material in order to expand or change the properties, for example temperature resistance or chemical reactivity, of this basic component. It can be built on the basis of a proven component structure of the base component, in particular an interface, such as a fastening thread. In this way, extensive redesigns, as would be necessary for a newly manufactured component from an alternative material, in particular from a reactive material, with comparable properties to the extended properties of the basic component provided with reactive material, can be reduced.
  • the present invention simplifies the production of a specific component with properties of a reactive material, it being impossible or very difficult to produce this component from a purely reactive material.
  • the post-processing according to the invention does not have to be carried out immediately after the production of the base component, but can be used at any point in the product life of the base component, for example also on a base component that has already been worn.
  • a projectile within the meaning of the present invention corresponds to a collective term for all types of weapon-related projectiles/projectiles/missiles that can be fired using a long-range weapon. These include, in particular, a guided missile, a warhead, drop ammunition and ammunition for firing.
  • the processing area within the meaning of the present invention designates the entirety of sections of the basic component which are suitable with a to be provided with reactive material. This includes but is not limited to the surface, gaps, undercuts, and recesses of the base component.
  • the base component is designed as a structural component.
  • the structural component has, for example, a lattice structure, a honeycomb structure or a comparable structure.
  • Structural components are distinguished from so-called secondary components by special rigidity and/or strength requirements in order to absorb possible external loads and/or to support other components, mostly secondary components.
  • the base component is preferably designed as a housing or structural frame. In this way, a particularly relevant component of a guided missile, a warhead or ammunition can be functionalized by the reactive material.
  • a particularly relevant component is in particular a component that effects elementary functions and therefore cannot be omitted without further ado. In this respect, such a component can be provided with a reactive material in order to save on a secondary component and consequently on weight and/or installation space.
  • the reactive material includes hafnium, copper oxide, molybdenum, molybdenum oxide, titanium, aluminum, magnesium, zirconium, tungsten, alloys thereof, or the like.
  • An oxidizer-reducing agent combination such as thermite or nanothermite, or another material mixture can also be considered, which one of the contains the materials listed above.
  • the reactive material can form a manageable metastable material.
  • the reactive material has a metal component, with at least zirconium and/or tungsten being contained in the metal component.
  • the metal component can be an intermetallic compound, an alloy, a metal and/or a mixture thereof.
  • the metal component is an intermetallic compound of zirconium and tungsten.
  • An intermetallic compound (also called intermetallic phase or intermediate phase) is a homogeneous chemical compound of at least two metals. In contrast to alloys, the intermetallic compound shows lattice structures which differ from those of the constituent metals. There is a mixed bond in their lattice, consisting of a metallic bond component and lower atomic bond or ionic bond components.
  • the metal component consists of a two-phase structure made of the metals zirconium and tungsten.
  • the reactive material consists of the metal component. The metal component allows the reactive material to have greater hardness or strength and greater chemical resistance, especially corrosion resistance, than the commercially available materials.
  • the proportion by mass of zirconium in the metal component is in a range from approximately 100% by weight to approximately 50% by weight, based on the total weight of the metal component.
  • the mass fraction of zirconium in the metal component is in a range from about 95% by weight to about 70% by weight, based on the total weight of the metal component.
  • the metal component consists of tungsten and zirconium, with the proportions of tungsten and zirconium in the metal component adding up to 100% by weight. In this way, the reactive material can be bonded to most materials of the base component, with the combined properties varying only slightly depending on the combination of materials between the base component and the reactive material.
  • thermal spraying or pressing is used when applying the reactive material.
  • Cold gas spraying is preferably used when applying the reactive material, since cold gas spraying has the lowest oxidation compared to other thermal spraying methods.
  • hot isostatic pressing is preferably used when applying the reactive material.
  • the pressure acts on the component from all sides in such a way that the component can obtain isotropic properties.
  • cold gas spraying is applied using a corresponding cold gas spraying device with a working pressure of about 20 bar to about 60 bar and with a working temperature in the range of about 400°C to about 600°C.
  • the base component is made of steel, aluminum, titanium, magnesium, zirconium, tungsten, molybdenum, copper, alloys thereof or the like.
  • the base component is not limited to a pure or a dominant type of material, but can also form a material mixture with at least one of the materials mentioned above. Thus, all come in the field of aerospace as well Military technology common materials into consideration.
  • the base component can also be made of a reactive material as listed above.
  • the composition of the base component differs from the composition of the reactive material.
  • the base material can consist of the same components as the reactive material, but in a proportionately different composition.
  • the predetermined stimulus is a thermal, mechanical and/or electrical stimulus.
  • a predetermined temperature or a predetermined load can be set at a defined point on the reactive material, when this is exceeded the reactive material carries out a highly exothermic reaction, such as an explosion. In this way, the reactive material can be kept in its metastable state until the chemical energy of the reactive material is released by a defined event in the form of the stimulus.
  • the method also has the step of determining a mass of the reactive material to be applied and its distribution over the processing area.
  • the mass of the reactive material required for this can be determined, for example, using simulation/calculation programs or empirical test models.
  • the distribution of the mass over the processing area also plays a role here, since the distribution can in principle be unlimited. This means that, for example, the layer thickness of the reactive material is thicker in one section of the processing area than in another section. However, this does not exclude a uniform distribution of the mass of the reactive material, but includes it. So she can Basic components can be provided with the reactive material according to individual requirements in such a way that, for example, the center of gravity shifts or the chemical reaction is stronger or weaker in certain areas.
  • the reactive material in the processing area is formed at least in sections as a coating.
  • the reactive material in the processing area is designed at least in sections as a multi-layer coating.
  • the reactive material can be configured in particular as an anti-corrosion layer, an electrical conductive layer/non-conductive layer or a thermal protective layer.
  • the reactive material in the processing area is designed as a filling, at least in sections.
  • Fillings within the meaning of the present invention include filled spaces, grooves, undercuts, recesses, holes and the like. In this way, gaps can be closed and, for example, the aerodynamics can be improved.
  • the reactive material is applied in such a way that the reactive material initially disintegrates into individual parts when it is activated and is then chemically converted.
  • the reactive material is, for example, initially in powder form and is distributed in the environment like dust before it oxidizes with an almost maximum contact surface with the environment.
  • the reactive material can also detach fragments of the basic component.
  • the reactive material is able to enhance the chemical reaction because more Oxygen for oxidation and/or additional incendiary mass are available from the detached fragments.
  • the reactive material is applied in such a way that the reactive material reacts chemically with a material of the base component when it is activated.
  • the base component also contains or consists of a reactive material. This means that the reactive material reacts chemically due to its activation, for example, and conditions arise in the base component that trigger a chemical reaction of the material of the base component with the activated reactive material. Thus, the chemical reaction can be enhanced.
  • the base component 1 shows a flowchart of a method for post-processing a base component 1.
  • the base component 1 is part of a projectile.
  • the method initially has a first step of providing a basic component 1 S1 .
  • the base component 1 is designed, for example, as a housing or as a structural frame. Steel, aluminum, titanium, magnesium, tungsten, molybdenum, copper, an alloy thereof or a comparable material is particularly suitable as the material for the base component 1 .
  • the method includes a second step of applying S2 a reactive material 2 to a predetermined processing area 3 of the base component 1.
  • the reactive material 2 is applied in such a way that it is bonded to the base component 1.
  • a sufficient connection quality of the material connection is achieved in particular when thermal spraying or pressing is used in the second step of applying S2 the reactive material 2 .
  • cold gas spraying is used, which is applied by a corresponding cold gas spraying device with a working pressure of about 20 bar to about 60 bar and with a working temperature in the range of about 400 °C to about 600 °C.
  • the reactive material 2 contains an activatable material property which can be activated by a predetermined stimulus.
  • This predetermined stimulus is, for example, a thermal, mechanical and/or electrical stimulus.
  • a laser beam which activates the reactive material 2 through its thermal energy input, is particularly suitable for the thermal stimulus.
  • the deformation work performed on the reactive material 2 by the impact of the projectile comes into consideration for the mechanical stimulus.
  • the predetermined stimulus is activated by an electrical impulse or an electrical current flow through the reactive material 2 by means of an electronic control element.
  • the method optionally has a third step of determining S3 a mass of the reactive material 2 to be applied and its distribution over the processing area 3 .
  • the mass of the reactive material 2 to be applied preferably corresponds at most to half the mass of the base component 1.
  • the stability of a component with the base component 1 and the reactive material 2 can thus be ensured despite the increased dead weight on the basis of the stability design of the base component 1.
  • the mass of the reactive material 2 is distributed evenly over the entire processing area 3 of the base component 1 in order, for example, to maintain the center of gravity of the base component 1 for the component as well.
  • FIG. 2 shows a schematic view of a component 10 in section with a reactive material 2 designed as a coating.
  • the component 10 is part of a projectile within the meaning of the present invention. This means that the component 10 is, for example, part of a guided missile, a warhead or ammunition. Thus, the component 10 can also serve as a carrier and/or as a source for fragments of the warhead.
  • the component 10 has a base component 1 .
  • This base component 1 contains a predetermined machining area 3.
  • the machining area 3 corresponds to the outer surface of the base component 1.
  • the base component 1 has mechanical interfaces, for example fastening eyelets, threads or the like (not shown), which are individually excluded from the machining area 3 can.
  • the base component 1 is made of steel, aluminum, titanium, magnesium, tungsten, molybdenum, copper, alloys thereof or similar materials.
  • the component 10 according to 2 a reactive material 2 on.
  • the reactive material 2 contains in accordance with the exemplary embodiment 1 an activatable material property which can be activated by a predetermined stimulus.
  • the reactive material 2 is applied to the processing area 3 and connected to the base component 1 in a materially bonded manner.
  • the reactive material 2 is formed as a coating on the outer surface of the base component 1 .
  • the reactive material 2 preferably contains a thermite made of copper oxide aluminum (CuO/Al) or molybdenum oxide aluminum (Mo2O3/Al).
  • the reactive material 2 is applied in such a way that the thermite 2 reacts chemically with the material of the base component 1 when it is activated.
  • This can, for example, direct blast of the projectile can be increased or another chemical or thermal effect can be achieved.
  • FIG. 12 shows an isometric view of a component 10 with a reactive material 2 formed partially as a coating 2a and partially as a filling 2b.
  • the component 10 is part of a projectile within the meaning of the present invention.
  • the component 10 shown has a base component 1, the base component 1 being designed as a hollow-cylindrical structural component.
  • the structural component is preferably made of steel, in particular high-strength steel.
  • the hollow-cylindrical structural component contains grooves, in particular grooves arranged crosswise, on the outside of the structural component. These grooves contain the reactive material 2 as a filling 2b.
  • the reactive material 2 is formed in sections on the surface of the outside of the structural component as a coating 2a.
  • the reactive material 2 preferably includes a metal component consisting of zirconium and tungsten.
  • the mass fraction of zirconium in the metal component is in a range from about 95% by weight to about 70% by weight, while the mass fraction of tungsten is in a range from about 5% by weight to about 30% by weight .
  • the metal component made of zirconium and tungsten is applied in such a way that this reactive material 2 initially disintegrates into individual parts when it is activated and is then chemically converted.
  • the reactive material 2 the hollow-cylindrical structural component 10 in particular cut along the grooves.
  • numerous fragments can arise from the component 10, which can serve as splinters, for example. Consequently, the additional storage of preformed fragments in the projectile can be reduced and the overall weight of the projectile can be reduced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
EP21200833.8A 2021-10-05 2021-10-05 Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement Pending EP4163584A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21200833.8A EP4163584A1 (fr) 2021-10-05 2021-10-05 Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21200833.8A EP4163584A1 (fr) 2021-10-05 2021-10-05 Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement

Publications (1)

Publication Number Publication Date
EP4163584A1 true EP4163584A1 (fr) 2023-04-12

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EP21200833.8A Pending EP4163584A1 (fr) 2021-10-05 2021-10-05 Procédé de traitement ultérieur d'un composant de base et composant doté d'un tel composant de base traité ultérieurement

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096507A (en) * 1989-10-12 1992-03-17 Buck Werke Gmbh & Co. Method of applying a cerium misch metal coating to the surface of a splinter-active component of an incendiary splinter projectile
AU2015255003A1 (en) 2014-05-02 2016-11-24 Mbda Uk Limited Composite reactive material for use in a munition
EP3312546A1 (fr) * 2016-10-20 2018-04-25 RUAG Ammotec AG Projectile à usage multiple
EP3736524A1 (fr) * 2015-08-17 2020-11-11 RUAG Ammotec AG Matière composite et procédé correspondant pour balles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096507A (en) * 1989-10-12 1992-03-17 Buck Werke Gmbh & Co. Method of applying a cerium misch metal coating to the surface of a splinter-active component of an incendiary splinter projectile
AU2015255003A1 (en) 2014-05-02 2016-11-24 Mbda Uk Limited Composite reactive material for use in a munition
EP3736524A1 (fr) * 2015-08-17 2020-11-11 RUAG Ammotec AG Matière composite et procédé correspondant pour balles
EP3312546A1 (fr) * 2016-10-20 2018-04-25 RUAG Ammotec AG Projectile à usage multiple

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