WO2025250064A1 - Canons, procédés de fabrication de canons et de segments de canon et dispositif de lancement comprenant des canons - Google Patents

Canons, procédés de fabrication de canons et de segments de canon et dispositif de lancement comprenant des canons

Info

Publication number
WO2025250064A1
WO2025250064A1 PCT/SE2025/050478 SE2025050478W WO2025250064A1 WO 2025250064 A1 WO2025250064 A1 WO 2025250064A1 SE 2025050478 W SE2025050478 W SE 2025050478W WO 2025250064 A1 WO2025250064 A1 WO 2025250064A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrel
segment
barrels
template core
jacket
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
PCT/SE2025/050478
Other languages
English (en)
Inventor
Fredrik THUVANDER
Martin PERKOVIC
Hamzah HAMDAN
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.)
BAE Systems Bofors AB
Original Assignee
BAE Systems Bofors AB
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 BAE Systems Bofors AB filed Critical BAE Systems Bofors AB
Publication of WO2025250064A1 publication Critical patent/WO2025250064A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/02—Composite barrels, i.e. barrels having multiple layers, e.g. of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/004—Article comprising helical form elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F2005/103—Cavity made by removal of insert

Definitions

  • the present invention relates to a method for producing barrel segments comprising arranging a capsule structure enclosing a template core provided with a foil, and wherein powder is arranged in the cavity between the capsule structure and the template core provided with foil, and the powder is pressed so that the powder and the capsule structure are joined together and the template core is removed for producing a barrel segment. Further, the invention relates to a method for manufacturing a barrel, a barrel and an ejection device.
  • Barrel based weapons are fired by burning gunpowder, thereby creating a gas expansion where the gas expansion moves a projectile in a barrel.
  • Barrels arranged with rifling are preferably arranged with a rifling having a pitch over the extent of the barrel, which causes the projectile to rotate during the ejection process. Rotation of the projectile is desirable in order to achieve a rotationally stabilized projectile, that is to say that the projectile rotates, after the projectile has left the barrel.
  • the projectile can be stabilized with, for example, fins, in which case it may be desirable that the projectile does not rotate when the projectile leaves the barrel, which is why the projectile in this case can be arranged with a sliding rim, which means that the projectile is not, or only to a certain extent, rotated during the ejection phase of the projectile when the projectile is fired in a grooved barrel.
  • the projectile when the projectile leaves the barrel, the projectile is stabilized by fins arranged on the projectile.
  • the projectile can be fired from a barrel without ribs/rifling, also known as a smoothbore, which means that no rotational force is transmitted to the projectile during the ejection process.
  • barrels are manufactured by cutting a forged material. These manufacturing methods are costly and time-consuming and result in a barrel that is adapted to the manufacturing constraints and not to the functional requirements of the barrel.
  • the purpose of the present invention is to provide an improved way of manufacturing an improved barrel, with the possibility of adapting the length and the groove design according to the technical requirements of the barrel and not according to manufacturing limitations.
  • the invention relates to a method for producing barrel segments, wherein the method comprises the steps: i.) a capsule structure is arranged enclosing a template core, ii.) powder is arranged in the cavity between the capsule structure and the template core where the template core is fully or partially arranged with grooves for embossing groove patterns on the barrel segment and where a foil is arranged on the template core,
  • barrel segments are heat treated and hardened after Hot Isostatic Pressing for the completion of a barrel segment.
  • the foil is made of tantalum.
  • the invention further comprises a method of manufacturing barrels characterized in that the method comprises the steps; i.) a barrel jacket is heated; ii.) a first barrel segment, comprising chambers, is arranged in the heated barrel jacket, iii.) barrel consisting of a barrel jacket arranged with barrel segments are cooled.
  • a barrel jacket is heated; ii.) a first barrel segment, comprising chambers, is arranged in the heated barrel jacket, iii.) barrel consisting of a barrel jacket arranged with barrel segments are cooled.
  • at least one second barrel segment is arranged after the first barrel segment in the barrel jacket before the barrel consisting of a barrel jacket arranged with barrel segments is cooled.
  • the invention further consists of a barrel.
  • the invention further consists of a launching device comprising a barrel.
  • Fig. 2a shows a capsule construction, according to one embodiment of the invention.
  • Fig. 2b shows a cross-sectional view of a capsule structure, according to one embodiment of the invention.
  • Fig. 3 shows a barrel, according to one embodiment of the invention.
  • Fig. 4 shows a template core, according to one embodiment of the invention.
  • Fig. 5 shows the process steps of Hot Isostatic Pressing, HIP, in the manufacture of a barrel segment, according to one embodiment of the invention.
  • Fig. 6 shows the process steps in manufacturing a barrel from barrel segments, according to one embodiment of the invention.
  • a launching device also known as a cannon, howitzer, or gun, such as an artillery piece, is designed to fire a projectile with a propellant.
  • a propellant such as gunpowder
  • Initiation is achieved by igniting the propellant, for example with a primer or igniter in an ammunition unit, which is initiated by impact.
  • Other methods of igniting the propellant may be by laser or electrical energy igniting the propellant.
  • the propellant burns with high velocity and high gas evolution, creating a gas pressure in the chamber that drives the projectile out of the barrel of the launcher.
  • the propellant is adapted to generate, as far as possible, a constant pressure on the projectile throughout the barrel trajectory, as the projectile moves in the barrel, creating a high velocity of the projectile as the projectile leaves the barrel mouth.
  • Projectiles such as various types of grenades, usually include some form of warhead and some form of fuze that initiates the warhead.
  • Fuzes can be of different types, where fuzes are commonly used for projectiles that are intended to explode on contact with an object, time fuzes where the projectile is intended to explode at a certain predetermined time, and proximity fuzes where the projectile is intended to explode when an object comes within a certain distance of the projectile.
  • Proximity fuzes are preferably used to combat aircraft and usually for medium caliber ammunition, such as 40 mm and 57 mm, while time fuzes and impact fuzes can be used to combat a large number of different objects. It is advantageous to combine different types of fuze functions in the same fuze, so that if a fuze with a zone tube function does not detect an object, the projectile will burst after a certain time, etc.
  • the warhead preferably includes some form of explosive and some form of shrapnel casing enclosing the explosive. Furthermore, various forms of guidance means, such as fins may be arranged in the fuze or in a separate sub-component.
  • the projectiles are preferably arranged with rotation or with fins.
  • the projectiles are said to be rotationally stabilized and in the case that the projectiles are arranged with fins, the projectiles are said to be fin- stabilized. Fin- stabilized projectiles should not have rotation or low rotation as they leave the barrel.
  • rifling is preferably arranged in the barrel to which the projectile mechanically couples during the ejection process.
  • Grooving means that the barrel of a firearm, the barrel, is provided with spiral grooves. The opposite is smooth-bore barrel.
  • the projectile is rotated along its longitudinal axis. This rotation prevents minor irregularities or damage to the projectile from causing a drift in its trajectory. Rotation is also necessary for an oblong (torpedo- shaped) projectile to maintain its direction after leaving the barrel and not start tumbling around, this is referred to as the projectile being rotationally stabilized.
  • smoothbore weapons only round (spherical) projectiles or fin-stabilized projectiles can be fired. An oblong projectile without fins will tumble as it leaves the muzzle.
  • rifling is the grooves arranged in the barrel of the gun, and the elevation between the grooves is called a boom.
  • the rifling of small arms consists of four right-handed ribs, while guns, such as artillery pieces, have a greater number of ribs depending on the caliber of the launching device.
  • the projectile In order for the rifling to engage the projectile, the projectile must either be slightly larger than the diameter between the booms, which is common for fine caliber weapons, or be fitted with a special flange, called an obturator or driving band, which has a slightly larger diameter than the booms, which is common in projectiles with a diameter greater than 20 mm.
  • the rim may be made of plastic, composite material or a soft metal, such as copper or a copper alloy.
  • the length of the barrel on which the groove turns a full revolution is called the pitch and is usually given in inches per revolution
  • HIP Cladding As materials with high resistance to abrasion and thermal erosion gases often have a higher cost relative to other materials that are conveniently used in HIP, these materials can be optimally utilized in HIP Cladding to create a component with high performance but with as low a manufacturing cost as possible by using only a smaller amount of the more expensive material.
  • the advantage of HIP Cladding is that there are no physical limitations on the thickness of the material applied, such as the surface treatment applied, compared to other surface treatment methods. This means that a thicker layer of the applied material can be achieved.
  • HIP Cladding it is also possible to combine metals with composites. With HIP Cladding, a bi-metallic component can be manufactured without welding or fastening techniques, resulting in a high strength component.
  • HIP Cladding allows selected surfaces to be bonded to the surface by diffusion; the incorporation of a suitable resistant material in powder or solid form to a solid substrate to provide a surface with enhanced resistance to wear and/or corrosion via the manufacturing techniques of encapsulation (HIP Cladding) and HIP.
  • Hot Isostatic Pressing is a manufacturing process to control the grain size and structure of the material.
  • HIP also enables the packing of metal, polymer, ceramic and composite powders into solid form. Benefits include the removal of all internal voids in metal components created by additive manufacturing methods and the improvement of mechanical properties such as fatigue resistance/fatigue strength, toughness, plasticity and impact strength.
  • HIP can produce a dense material from metal, composite, polymer or ceramic powders without melting and materials with partly different characteristics can be coordinated in the same component.
  • HIP a solid material with superior properties can be created from powder as powder/powder components have a fine, uniform grain size and isotropic structure. Furthermore, by utilizing HIP, dissimilar metals can be joined together without the need for temperature limiting binders. Through HIP, multiple diffusion bonds can be achieved in a single process cycle. HIP works for a wide range of metal alloys, as well as for example polymers and ceramic materials. Examples include alloys with nickel, cobalt, tungsten, titanium, molybdenum, aluminum, copper and iron, oxide and nitride ceramics, glass, intermetallic s and polymers. HIP allows for the joining and combining of materials that cannot otherwise be combined, i.e. composites.
  • FIG. 1 a schematic sketch of the manufacture of a barrel segment 1 is shown in which a template core 20 is arranged in an outer tube 11, which is part of a capsule structure, so that a void, a cavity 30, is arranged between the capsule structure and the template core 20.
  • the template core 20 is provided with a foil 23 which abuts on the outer surface of the template core and is arranged to follow the groove pattern of the template core.
  • powder may be arranged to produce a barrel segment 1 with HIP.
  • the barrel segment 1 may be a complete barrel, but may also comprise components for a complete barrel, referred to as barrel segments. A complete barrel may thus be arranged by arranging several components, also referred to as barrel segments, to complete a complete barrel.
  • FIG. 2a shows a view of a HIP container in the form of a capsule structure 10 for manufacturing a component for a barrel.
  • the HIP container 10 is provided with connection means 12, 14, for evacuating air, vacuum pumping, before and/or during the execution of the manufacturing method as well as a front bottom plate 16 and an outer tube 11.
  • Fig. 2b shows a cross-sectional view of a HIP container in the form of a capsule structure 10 for manufacturing a component for a barrel.
  • the HIP container 10 is provided with connection means 12, 14, for evacuation of air, vacuum pumping, before and/or during the execution of the manufacturing method as well as a front bottom plate 16 and a rear bottom plate 18 and an outer tube 11.
  • the powder is freely arranged in the HIP container in the form of the capsule structure 10 between the capsule structure 10 and foil 23 arranged on the template core 20.
  • the powder is fixed at the intended location for the production of a barrel segment 1.
  • the material is applied in powder form and shaken into place inside a HIP container in the form of capsule structure 10, which is an enclosing component arranged to retain powder, wherein powder, in the form of applied material, is freely arranged in the capsule structure 10.
  • the powder is fixed in the intended location for the production of a barrel segment 1.
  • Manufacturing methods involving powders have advantages in confined manufacturing conditions where the material supplied has to reach into spaces of small dimensions.
  • the capsule structure 10 is provided with connection means for evacuation of air and vacuum pumping, before and/or during the execution of the manufacturing method.
  • Several different types of metal powders can be arranged in the capsule structure at different positions to improve the functionality of the barrel component.
  • the capsule structure 10 is made of any material that the skilled person realizes is suitable for the purpose.
  • the material of the capsule structure 10 is black plate, in another embodiment, the material is stainless steel which also contributes to an anti-corrosion function of the barrel segment 1.
  • the sub-components of the capsule structure may also be additively manufactured.
  • a barrel 60 is shown made of a number of barrel segments 1, 1' arranged in a barrel jacket 62.
  • a complete barrel 60 includes further barrel segments so that the entire barrel jacket 62 is arranged with barrel segments.
  • the first barrel segment 1 is arranged with chamber 2 and positioned where the barrel is arranged against the ejection device and where the projectile is arranged for ejection into the fire tube 60.
  • each barrel segment 1, 1', ⁇ " is manufactured according to the above manufacturing method and arranged in a barrel jacket 62 by heating the barrel jacket 62 and thereby expanding it to a state such that the barrel segments 1, 1 ' , 1 " can be arranged in the barrel jacket 62.
  • the barrel jacket may cool so that the barrel jacket contracts and the barrel segments 1, 1', ⁇ " are retained in the barrel jacket 62 so that a complete barrel 60 is provided.
  • autofrettage is achieved on the inner surface of the barrel, resulting in improved resistance to crack propagation and/or cracking.
  • Fig. 4 shows a template core 20 for manufacturing the first barrel segment 1.
  • the template core 20 is arranged with a first portion 21, for manufacturing chambers in the barrel segment 1, and a second portion 22 for manufacturing grooves in the barrel segment 1.
  • the template core is preferably made of metal, but can also be made of other materials suitable for the further method of manufacturing barrel segments.
  • a foil 23, also referred to as film, is arranged on the template core 20.
  • the foil is arranged on the template core in such a way that the foil is stretched and without air pockets, which causes the foil to be alloyed in an advantageous way during hot isostatic pressing of barrels and/or barrel components.
  • the foil is preferably made with a thickness of more than 100 nm and with a width that facilitates the arrangement of the foil on the template core, preferably the width is more than 200 mm.
  • tantalum foil is used, but other materials can also be used.
  • the template core/foil can be treated with an adhesive substance that facilitates adhesion of the tantalum foil to the template core when the foil is arranged/wound on the template core.
  • the tantalum foil can be arranged against the template core in a vacuum chamber, which means that the tantalum foil can be arranged against the template core without air pockets occurring.
  • Fig. 5 shows the manufacturing method 100 for barrel segment 1 with HIP.
  • Outer tube 11, rear base plate 18 and front base plate 16 are jointly arranged for the creation of a capsule structure 10 in the step of Designing a capsule structure 102.
  • a capsule structure 10, also referred to as a HIP container is a device in which powder is arranged to shape the powder into a HIPED body under high temperature and high pressure.
  • Powder in the capsule structure 10 is arranged in the step
  • Powder is arranged in the capsule structure 104 by arranging powder between the template core 20 and outer tube 11.
  • the template core 20 can be centered in outer tube 11 by arranging the template core 20 to the rear base plate 18 and the front base plate 16.
  • the capsule structure 10 is evacuated, vibrated and sealed to evenly distribute the powder in the capsule structure 10 in the step of Evacuating, vibrating and sealing the capsule structure 106.
  • hot isostatic pressing is performed in the step of HIP 108, that is, a gas is used to create an isostatic pressure on the capsule structure 10 by disposing the gas to a connecting device disposed on the capsule structure 60.
  • the capsule structure Before the gas is arranged to the capsule structure, the capsule structure may be vacuum-pumped or otherwise evacuated of air or the filling gas/fluid arranged in the capsule structure 10 before evacuation, for example by flushing with a noble gas. Thereafter, the entire capsule structure 10 is heated for the creation of a precursor or HIPED body.
  • the HIP temperature is preferably 20% below the melting temperature of the material, for martensitic stainless steels the HIP temperature is above the phase transformation to the austenitic state (which is in the order of 80% of the melting point of the material).
  • the foil 23 arranged on the template core 20 will be joined to the powder arranged in the capsule structure.
  • the body can be subjected to Heat treatment/hardening 110, which means that the now joined body is heated.
  • the material is suitable for machining, for example cutting machining, so that excess material, for example material covering the opening for the outgoing passage for gas flow and possibly parts of the HIP container are machined away in the Machining/pickling step 112 where cutting machining such as turning or milling but also pickling or other chemical treatment such as treatment with acid can be performed.
  • the template core 20 is preferably removed by a combination of mechanical processing, such as turning/drilling, and pickling in order to reveal the grooving performed in the fire tube segment. Where appropriate, a Surface treatment 114 is also carried out.
  • barrel segment 1 After the completion of barrel segment 1, several barrel segments 1 can be arranged to create a barrel.
  • Materials utilized as powders are preferably tool steels or martensitic stainless steels with high concentrations of chromium and nickel optionally with refractory material disposed in the surface of the muzzle brake to better resist erosion from gunpowder gases or powders specially adapted for application to the foil 23 disposed on the template core 20.
  • Fig. 6 shows manufacturing method 200 for manufacturing barrel 60 from a plurality of barrel segments 1, 1', ⁇ " .
  • the barrel jacket 62 in which the barrel segments are arranged, is heated in the step of Heating the barrel jacket 202.
  • the barrel jacket 62 expands, which means that barrel segments 1, 1 ' , 1 " can be arranged in the barrel jacket 62.
  • the step of Arranging barrel segments in the barrel jacket 204 one or more barrel segments 1, 1', ⁇ " are arranged in the barrel jacket 62.
  • barrel segment including chamber 1 is arranged in the barrel jacket to create a complete barrel 60.
  • the barrel can be cooled, which is done in the step of Cooling the barrel jacket 208.
  • a complete barrel 60 is completed which can be further arranged in an ejection device.
  • parts of the barrel could be machined away in the Machining step 212 where cutting machining such as turning or milling but also pickling or other chemical treatment such as treatment with acid can be performed.
  • a Surface treatment 214 is also carried out.
  • only one barrel segment 1 is utilized. Initially, barrel jacket 62, in which the barrel segment 1 is arranged, is heated in the step of heating the barrel jacket 202.
  • the barrel jacket 62 When the barrel jacket 62 is heated, the barrel jacket 62 expands, which means that the barrel segment 1 can be arranged in the barrel jacket 62.
  • the step of arranging the barrel segment in the barrel jacket 204 no barrel segment is arranged in the barrel jacket 62 for the alternative embodiment of the manufacturing method 200' for barrels, instead, in the step of arranging the barrel segment including chambers in the barrel jacket 206, a barrel segment including chamber 1 is arranged in the barrel jacket to create a complete barrel 60.
  • the barrel can be cooled, which is done in the step of cooling the fire tube jacket 208.
  • a complete barrel 60 is completed which can be further arranged in an ejection device.
  • the choice of materials, the choice of geometric shapes, the elements and details included in barrels or barrel components are adapted to the weapon system(s), platform and other design characteristics of the time.
  • the foil is made of tantalum, but other heat-resistant materials may also be used.
  • barrels and barrel components for fine, medium and large calibers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention concerne un procédé de production de segments de canon (1), le procédé comprenant les étapes suivantes : i.) une structure de capsule (10) est agencée en entourant un noyau de gabarit (20), ii.) de la poudre est agencée dans la cavité entre la structure de capsule (10) et le noyau de gabarit (20), le noyau de gabarit (20) étant entièrement ou partiellement agencé avec des rainures pour gaufrer des motifs de rainure sur le segment de canon (1) et une feuille (23) étant agencée sur le noyau de gabarit (20), (iii) la poudre est pressée au moyen d'une haute pression et de chaleur, également appelées pressage isostatique à chaud, HIP, de telle sorte que la poudre, la feuille et la structure de capsule soient jointes ensemble, iv.) le noyau de gabarit (20) est retiré pour produire un segment de canon (1). L'invention concerne en outre un canon et un dispositif de lancement.
PCT/SE2025/050478 2024-05-28 2025-05-20 Canons, procédés de fabrication de canons et de segments de canon et dispositif de lancement comprenant des canons Pending WO2025250064A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2400064-8 2024-05-28
SE2400064A SE2400064A1 (sv) 2024-05-28 2024-05-28 Eldrör samt metod för tillverkning av eldrörsegment

Publications (1)

Publication Number Publication Date
WO2025250064A1 true WO2025250064A1 (fr) 2025-12-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2025/050478 Pending WO2025250064A1 (fr) 2024-05-28 2025-05-20 Canons, procédés de fabrication de canons et de segments de canon et dispositif de lancement comprenant des canons

Country Status (2)

Country Link
SE (1) SE2400064A1 (fr)
WO (1) WO2025250064A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792657A (en) * 1946-05-16 1957-05-21 Battelle Development Corp Gun barrel coated with tantalum
US4729806A (en) * 1985-08-13 1988-03-08 Affarsverket Ffv Method for making tubes having low weight
US4747225A (en) * 1982-12-23 1988-05-31 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Weapon barrel with metallorgically bonded wear resistant liner
US20080120889A1 (en) * 2006-07-03 2008-05-29 Animesh Bose Processing of rifled gun barrels from advanced materials
US20110200840A1 (en) * 2006-05-04 2011-08-18 Schlumberger Technology Corporation Cylinder with polycrystalline diamond interior
US9695489B1 (en) * 2013-01-14 2017-07-04 Gunwright Intellectual Property Llc Gun barrel manufacturing methods
US20190017176A1 (en) * 2016-12-21 2019-01-17 The United States Of America, As Represented By The Secretary Of The Navy Methods for producing composite structures using diffusion or thermal reactions of a plurality of layers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792657A (en) * 1946-05-16 1957-05-21 Battelle Development Corp Gun barrel coated with tantalum
US4747225A (en) * 1982-12-23 1988-05-31 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Weapon barrel with metallorgically bonded wear resistant liner
US4729806A (en) * 1985-08-13 1988-03-08 Affarsverket Ffv Method for making tubes having low weight
US20110200840A1 (en) * 2006-05-04 2011-08-18 Schlumberger Technology Corporation Cylinder with polycrystalline diamond interior
US20080120889A1 (en) * 2006-07-03 2008-05-29 Animesh Bose Processing of rifled gun barrels from advanced materials
US9695489B1 (en) * 2013-01-14 2017-07-04 Gunwright Intellectual Property Llc Gun barrel manufacturing methods
US20190017176A1 (en) * 2016-12-21 2019-01-17 The United States Of America, As Represented By The Secretary Of The Navy Methods for producing composite structures using diffusion or thermal reactions of a plurality of layers

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