EP0114591B1 - Procédé de fabrication de canons - Google Patents

Procédé de fabrication de canons Download PDF

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Publication number
EP0114591B1
EP0114591B1 EP83890232A EP83890232A EP0114591B1 EP 0114591 B1 EP0114591 B1 EP 0114591B1 EP 83890232 A EP83890232 A EP 83890232A EP 83890232 A EP83890232 A EP 83890232A EP 0114591 B1 EP0114591 B1 EP 0114591B1
Authority
EP
European Patent Office
Prior art keywords
tube
alloy
jacket tube
casing
liner
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.)
Expired
Application number
EP83890232A
Other languages
German (de)
English (en)
Other versions
EP0114591A1 (fr
Inventor
Manfred Gstettner
Bruno Dipl.-Ing. Hribernik
Alexander Kohnhauser
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.)
Voest-Alpine Stahl AG Te Linz Ad
Original Assignee
Vereinigte Edelstahlwerke AG
Voestalpine Stahl 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3567024&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0114591(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vereinigte Edelstahlwerke AG, Voestalpine Stahl GmbH filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0114591A1 publication Critical patent/EP0114591A1/fr
Application granted granted Critical
Publication of EP0114591B1 publication Critical patent/EP0114591B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/1208—Containers or coating used therefor
    • 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
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12097—Nonparticulate component encloses particles

Definitions

  • the invention relates to a method for producing gun barrels with incorporated trains for guns or handguns, the gun barrels having a core barrel and a jacket barrel made of different metallic materials.
  • Gun barrels are subject to two completely different stresses: on the one hand, the explosion of the propellant charge of a projectile creates a high pressure inside the barrel, which the gun barrel must be able to withstand, and on the other hand the projectile is driven through the barrel at high speed, thereby stabilizing the bullet trajectory the projectile is rotated by the cables in the gun barrel, which creates an extremely abrasive load on the barrel interior.
  • these two loads place different demands on the material.
  • One way to meet these different requirements is to provide the gun barrels with a correspondingly large dimension, as a result of which the mobility of the weapons suffers and an extremely high amount of material is required.
  • a method for the manufacture of gun barrels has already become known, wherein a core tube is inserted into a casing tube in a snug fit.
  • the disadvantage of this method is that particularly precise machining of both the inner hollow of the casing tube and the outer casing of the core tube is required. If the inner tube is damaged, for example as a result of cracks that can be attributed to the pressure, a major change in the caliber can occur, which can lead to the projectile being destroyed by the projectile.
  • a method is described which is suitable for lining cavities, including pipes.
  • a gap is created in a casing tube, for example made of steel, by introducing a thin-walled metal part, into which metal powder is filled, the gap is then evacuated and then the body with the metal part and powder contained therein at approx. 1150 ° C. and 103 N / mm 2 is compressed. A final post-processing is possible.
  • No. 4,327,154 discloses a method for producing tubular parts, a composite part being produced by applying a powder component to a tubular metal shell with hot isostatic pressing between 1000 ° C. to 1400 ° C. and pressures from 10 to 1000 bar.
  • the present invention had for its object to provide a method for producing gun barrels that are suitable for guns as well as for hand and handguns that have a core tube and at least one jacket tube made of different metallic materials, which allows a to produce a particularly light and resistant weapon barrel.
  • the method according to the invention for the manufacture of weapon tubes which have a core tube and at least one jacket tube made of different metallic materials, consists essentially in the fact that in a sleeve tube, which is arranged in a capsule tube, a filling made of a bulk density of a tough alloy at least 60% of the density of the compact, powdery, highly wear-resistant or corrosion-resistant material is introduced and compacted with the exception of a central hollow area by a filler made of free-cutting steel, is closed at the ends of the casing or capsule tube, whereupon the tube is evacuated and the sealed tube in a protective gas atmosphere , at least 900 ° C, but below the melting point of the metallic materials and a pressure of at least 900 bar and that after a heat treatment of the composite body thus obtained, which between a full-surface metallic composite n has a casing tube and compressed material, is then subjected to at least 1.3 times the hot deformation, mechanically processed and trains are created.
  • a weapon barrel manufactured according to this method has the
  • titanium or a titanium alloy is used as a tough material, a particularly low-weight weapon barrel can be produced.
  • high wear-resistant alloy For gun barrels for guns or the like with a particularly elongated shot trajectory is considered to be high wear-resistant alloy uses a cobalt-based alloy.
  • a nickel-based alloy is used as the material for filling the casing tube.
  • a sleeve tube which has a coating of an adhesion promoter, e.g. Nickel or the like.
  • a composite metal tube part was produced by using X40CrMoV51 (with 0.38% C, 1.1% Si, 0.38% Mn, 5.20% Cr, 1.30% Mo and 1.2% V, the rest essentially iron) of the dimension: 46 mm outer diameter, 15 mm wall thickness and 650 mm length, a rod of the same length made of free-cutting steel is inserted centrally and in the remaining cavity a metal powder made of a heat-resistant nickel-based alloy with the composition 0, 12% C, 20.0% Cr, 18.1% Co, 2.5% Ti, 1.5% Al, 1.5% Fe, the rest essentially nickel.
  • the tube ends were sealed gas-tight by welding circular sheet metal disks onto the jacket tube and the hot isostatic pressing process was carried out at 1080 ° C. and a gas pressure of 1100 bar for 3 hours.
  • the central core made of free-cutting steel was completely drilled out and then the further mechanical processing was carried out to produce the trains and to complete the run.
  • a sleeve tube made of an alloy of the following composition in wt .-% C 0.33, Si 0.28, Mn 0.50, Cr 3.0, Mo 1.2, V 0.27 and remainder iron with an outer diameter of 60 mm and an inner diameter of 40 mm and a length of 800 mm.
  • the hollow cylindrical space was filled with a powder of a cobalt-based alloy with the following composition in% by weight C 0.17, Si 0.35, Mn 0.65, Cr 28.9, Mo 5.6, Ni max. 0.5, Co 66.0 and Fe max. 0.5 filled, a density of 6.5 g / cm 3 was achieved by shaking. Degassing was carried out at 350 ° C., whereupon an upper cover with a suction opening was welded onto the capsule tube. Then it was evacuated and the suction opening was closed. The encapsulated body was hot-isostatically pressed for 3 hours in an argon atmosphere at 1150 ° C. and at a pressure of 1000 bar.
  • This composite body was then forged on a long forging machine to an outer diameter of approx. 35 mm, which corresponds to an approximate triple deformation.
  • solution annealing was carried out at 1100 ° C for one hour, after which a barrel for a heavy machine gun was made by mechanical processing and cold forging of the trains.
  • a cylindrical rod made of free-cutting steel with an outside diameter of 45 mm and a length of 900 mm was inserted in the center of the casing tube.
  • the hollow cylindrical space was filled with a powder of a cobalt-based alloy with the following composition in% by weight C 0.17, Si 0.35, Mn 0.65, Cr 28.0, Mo 5.5, Ni max. 0.5, Co 66.0 and Fe max. 0.5 filled, a density of 6.7 g / cm 3 was achieved by shaking.
  • Degassing was carried out at 340 ° C., whereupon an upper cover with a suction opening was welded on. It was then evacuated and hot-isostatically pressed according to Example 2.
  • the composite body thus obtained was forged on a long forging machine to a diameter of 105 mm or 35 mm or 23 mm and a length of 3500 mm, which corresponds to a fourfold deformation.
  • the further processing was carried out analogously to Example 2, but a tensile strength of 900-1100 N / m 2 was set by tempering the jacket tube.
  • the tube obtained had a caliber of 1 "and was used for a rapid-fire cann
  • a sleeve tube made of TiA16V4 with an outer diameter of 210 mm and an inner diameter of 160 mm and a length of 900 mm was introduced.
  • a core rod made of free-cutting steel with a diameter of 45 mm and a length of 900 mm was then introduced into this casing tube.
  • the intermediate space was filled with a powder of the following composition in% by weight C 0.34, Cr 1.2, Mo 0.2, Al 0.95, remainder Fe. It was compressed to 70% of the density.
  • the procedure was then as in Example 3 and the composite body was forged to a diameter of 105 mm or 35 mm and a length of 350 mm, which corresponds to a fourfold deformation.
  • This composite was heated at 940 ° C for one hour and then cooled in oil and tempered at 520 ° C for four hours. After processing, the inner Surface nitrided in a manner known per se to a depth of 0.3 to 0.4 mm.
  • the sleeve tube can also be welded directly to the cover, since the powder can not act radially due to the material thickness of the sleeve tube.
  • the core can also be formed by a hollow cylinder, in which case, which is particularly suitable for larger calibers, forging can be carried out using a mandrel.
  • a cladding tube can also be used which has an inner coating, e.g. B. electrodeposited from nickel or the like., which can occur as an adhesion promoter between the material of the cladding tube and the powder.
  • an inner coating e.g. B. electrodeposited from nickel or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Coating With Molten Metal (AREA)
  • Glass Compositions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Semiconductor Lasers (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (8)

1. Procédé de fabrication de canons à rayures incorporées, pour pièces d'artillerie ou armes portatives, les canons présentant un tube d'âme et un tube enveloppe en matériaux métalliques différents, caractérisé en ce que dans un tube gaine en alliage résistant à la rupture, placé dans un tube capsule, tout en ménageant une zone creuse centrale au moyen d'un corps de remplissage en acier de décolletage, est introduit et comprimé un chargement d'un matériau très résistant à l'usure ou résistant à la corrosion, sous forme de poudre, présentant une densité en vrac d'au moins 60% de la densité du matériau compact, les extrémités du tube gaine et du tube capsule sont fermées, à la suite de quoi le vide est fait et le tube fermé est comprimé dans une atmosphère contrôlée, à au moins 900°C, en deçà cependant des points de fusion des matériaux métalliques et sous une pression d'au moins 900 bar et en ce qu'ensuite, après un traitement thermique, le corps composite ainsi obtenu, lequel présente une liaison mécanique sur toute la surface entre le tube gaine et le matériau comprimé, est soumis à un façonnage à chaud d'au moins 1,3 fois, usiné mécaniquement de que les rayures sont réalisées.
2. Procédé selon la revendication 1, caractérisé en ce que le corps de remplissage utilisé est un tube.
3. Procédé selon la révendication 1 ou 2, caractérisé en ce que l'alliage résistant à la traction utilisé est du titane ou un alliage de titane.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que l'alliage résistant à la traction utilisé est de l'acier.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'alliage très résistant à l'usure utilisé est un alliage de cobalt.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'alliage très résistant à l'usure utilisé est un alliage à base de nickel.
7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le matériau sous forme de poudre est précomprimé et/ou préfritté.
8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le tube gaine présente une enduction intérieure à base d'un agent d'adhérence, du nickel par exemple.
EP83890232A 1982-12-23 1983-12-22 Procédé de fabrication de canons Expired EP0114591B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT467982 1982-12-23
AT4679/82 1982-12-23

Publications (2)

Publication Number Publication Date
EP0114591A1 EP0114591A1 (fr) 1984-08-01
EP0114591B1 true EP0114591B1 (fr) 1988-03-30

Family

ID=3567024

Family Applications (3)

Application Number Title Priority Date Filing Date
EP83890232A Expired EP0114591B1 (fr) 1982-12-23 1983-12-22 Procédé de fabrication de canons
EP83890234A Withdrawn EP0114593A1 (fr) 1982-12-23 1983-12-22 Procédé de fabrication d'un cylindre creux pour machines de transformation des plastiques
EP83890233A Expired EP0114592B1 (fr) 1982-12-23 1983-12-22 Procédé de transformation de métaux à l'aide de filières

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP83890234A Withdrawn EP0114593A1 (fr) 1982-12-23 1983-12-22 Procédé de fabrication d'un cylindre creux pour machines de transformation des plastiques
EP83890233A Expired EP0114592B1 (fr) 1982-12-23 1983-12-22 Procédé de transformation de métaux à l'aide de filières

Country Status (6)

Country Link
US (1) US4747225A (fr)
EP (3) EP0114591B1 (fr)
AT (2) ATE33219T1 (fr)
DE (2) DE3376101D1 (fr)
ES (2) ES528317A0 (fr)
GR (2) GR79748B (fr)

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Publication number Priority date Publication date Assignee Title
AT385227B (de) * 1984-01-24 1988-03-10 Ver Edelstahlwerke Ag Verfahren zur herstellung von kraftuebertragenden, insbesondere drehmomentuebertragenden elementen
US4640814A (en) * 1985-10-17 1987-02-03 Crucible Materials Corporation Method for producing clad tubular product
EP0283877B1 (fr) * 1987-03-25 1993-06-23 Nippon Steel Corporation Procédé pour la fabrication de tubes de métal enrobé.
AT391105B (de) * 1988-10-07 1990-08-27 Boehler Gmbh Vormaterial fuer die erzeugung von verbundwerkstoffen
US5277228A (en) * 1990-11-02 1994-01-11 Usui Kokusai Sangyo Kaisha Limited Welded pipe with excellent corrosion resistance inner surface
US5290507A (en) * 1991-02-19 1994-03-01 Runkle Joseph C Method for making tool steel with high thermal fatigue resistance
US5341719A (en) * 1992-12-14 1994-08-30 General Electric Company Multi-layer composite gun barrel
US5357842A (en) * 1993-07-09 1994-10-25 Reynolds Charles E Recoil reducing device
US5724643A (en) * 1995-06-07 1998-03-03 Allison Engine Company, Inc. Lightweight high stiffness shaft and manufacturing method thereof
US6218026B1 (en) 1995-06-07 2001-04-17 Allison Engine Company Lightweight high stiffness member and manufacturing method thereof
US5856631A (en) * 1995-11-20 1999-01-05 Nitinol Technologies, Inc. Gun barrel
DE19834394A1 (de) * 1998-07-30 2000-02-03 Rheinmetall W & M Gmbh Waffenrohr mit einer verschleißmindernden Hartchromschicht
SE516130C2 (sv) * 1999-03-15 2001-11-19 Damasteel Ab Ämne för metallprodukt, förfarande för framställning av metallprodukt samt metallprodukt
DE19926246A1 (de) * 1999-06-09 2000-12-14 Rheinmetall W & M Gmbh Verfahren zur Innenbeschichtung eines Waffenrohres
US6594936B1 (en) * 2002-10-03 2003-07-22 Gary Sniezak Method for lining a gun barrel
US20040226211A1 (en) * 2003-05-16 2004-11-18 Ra Brands. L.L.C. Composite receiver for firearms
US20040244254A1 (en) * 2003-06-09 2004-12-09 Barfield Christopher A.. Firearm safety device
US7922065B2 (en) 2004-08-02 2011-04-12 Ati Properties, Inc. Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts
US7963202B1 (en) * 2005-09-21 2011-06-21 The United States Of America As Represented By The Secretary Of The Army Superalloy mortar tube
US7921590B2 (en) * 2006-02-23 2011-04-12 Strum, Ruger & Company, Inc. Composite firearm barrel reinforcement
US20100236122A1 (en) * 2006-07-26 2010-09-23 Fonte Matthew V Flowforming Gun Barrels and Similar Tubular Devices
CA2658125C (fr) * 2006-08-01 2013-11-19 Afl Telecommunications Llc Tubes metalliques encastres pourvus d'un raccord de compression et leur procede de fabrication
US8910409B1 (en) 2010-02-09 2014-12-16 Ati Properties, Inc. System and method of producing autofrettage in tubular components using a flowforming process
US8869443B2 (en) 2011-03-02 2014-10-28 Ati Properties, Inc. Composite gun barrel with outer sleeve made from shape memory alloy to dampen firing vibrations
US10118259B1 (en) 2012-12-11 2018-11-06 Ati Properties Llc Corrosion resistant bimetallic tube manufactured by a two-step process
US9279633B2 (en) 2014-01-21 2016-03-08 Richard R. Hayes Multi-caliber weapon
US9796057B2 (en) * 2015-01-15 2017-10-24 Saeilo Enterprises, Inc. Gun barrel assembly

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US2372202A (en) * 1940-05-08 1945-03-27 Mallory & Co Inc P R Bearing
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US2977666A (en) * 1954-12-29 1961-04-04 Porter H Brace Method of making gun liner elements
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Also Published As

Publication number Publication date
ATE33219T1 (de) 1988-04-15
ES528315A0 (es) 1984-12-01
DE3376101D1 (en) 1988-05-05
EP0114592A1 (fr) 1984-08-01
ES8501658A1 (es) 1984-12-01
EP0114591A1 (fr) 1984-08-01
EP0114592B1 (fr) 1988-03-30
GR81355B (fr) 1984-12-11
ATE33218T1 (de) 1988-04-15
GR79748B (fr) 1984-10-31
DE3376100D1 (en) 1988-05-05
ES528317A0 (es) 1984-12-01
ES8501657A1 (es) 1984-12-01
US4747225A (en) 1988-05-31
EP0114593A1 (fr) 1984-08-01

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