EP0026511A2 - Verfahren zur Herstellung eines zusammengesetzten Laufs - Google Patents

Verfahren zur Herstellung eines zusammengesetzten Laufs Download PDF

Info

Publication number
EP0026511A2
EP0026511A2 EP80200826A EP80200826A EP0026511A2 EP 0026511 A2 EP0026511 A2 EP 0026511A2 EP 80200826 A EP80200826 A EP 80200826A EP 80200826 A EP80200826 A EP 80200826A EP 0026511 A2 EP0026511 A2 EP 0026511A2
Authority
EP
European Patent Office
Prior art keywords
tubes
continuity
layer
manufacturing
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80200826A
Other languages
English (en)
French (fr)
Other versions
EP0026511A3 (en
EP0026511B1 (de
Inventor
Pierre Van Der Wielen
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.)
FN Herstal SA
Herstal SA
Original Assignee
FN Herstal SA
Herstal SA
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 FN Herstal SA, Herstal SA filed Critical FN Herstal SA
Priority to AT80200826T priority Critical patent/ATE4393T1/de
Publication of EP0026511A2 publication Critical patent/EP0026511A2/de
Publication of EP0026511A3 publication Critical patent/EP0026511A3/fr
Application granted granted Critical
Publication of EP0026511B1 publication Critical patent/EP0026511B1/de
Expired legal-status Critical Current

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
    • 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
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y10T428/12854—Next to Co-, Fe-, or Ni-base component

Definitions

  • the present invention relates to a composite gun and a method for its manufacture, a gun more especially intended for automatic weapons.
  • the object of the invention is to provide such a cannon.
  • This consists, in accordance with the invention, of three superimposed layers without solutions of continuity, namely: an internal layer made of a refractory material; a middle layer of a material whose mechanical strength is greater than about 250 MPa at 900 ° C and an outer layer of alloy steel.
  • a satisfactory process consists, in accordance with the in vention, to thread three tubes, each intended to form one of the abovementioned layers, and to co-hammer them on the mandrel until all solution of continuity between said tubes disappears.
  • a variant of the method according to the invention consists in co-hammering the external layers and median, then to realize then the internal layer by carburizing, deposition in gas phase, vaporization under vacuum or electrodeposition, by taking all precautions to obtain a perfect adhesion, that is to say to avoid any solution of continuity.
  • a striped mandrel will advantageously be used for co-hammering, which makes it possible to obtain a striped blank and thereby reduces the manufacturing costs.
  • a 7.62 mm caliber machine gun barrel was produced by co-hammering two tubes made for the inner tube d '' a cobalt-based alloy similar to those used in the construction of turbo-reactors and for the outer tube of a steel alloyed with Cr-Mo.
  • the operation was carried out on a striped mandrel made of hard material and produced a striped barrel blank.
  • the composite obtained was free of continuity solutions.
  • the core of the blank was then chrome-plated under conditions capable of giving a coating whose adhesion was perfect.
  • the barrel obtained was subjected to a resistance shot and compared to a barrel absolutely similar in dimensional terms but completely made of the same steel alloyed with Cr-Mo as that used for the outer layer of the composite.
  • This gun had received an internal coating of chrome produced by a conventional technique

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
EP80200826A 1979-09-26 1980-09-03 Verfahren zur Herstellung eines zusammengesetzten Laufs Expired EP0026511B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80200826T ATE4393T1 (de) 1979-09-26 1980-09-03 Verfahren zur herstellung eines zusammengesetzten laufs.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2/58100A BE878999A (fr) 1979-09-26 1979-09-26 Canon composite et procede pour sa fabrication
BE2058100 1979-09-26

Publications (3)

Publication Number Publication Date
EP0026511A2 true EP0026511A2 (de) 1981-04-08
EP0026511A3 EP0026511A3 (en) 1981-11-11
EP0026511B1 EP0026511B1 (de) 1983-08-03

Family

ID=3865475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200826A Expired EP0026511B1 (de) 1979-09-26 1980-09-03 Verfahren zur Herstellung eines zusammengesetzten Laufs

Country Status (6)

Country Link
US (1) US4409881A (de)
EP (1) EP0026511B1 (de)
AT (1) ATE4393T1 (de)
BE (1) BE878999A (de)
DE (1) DE3064492D1 (de)
IL (1) IL60981A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122316A1 (de) * 1981-06-05 1982-12-23 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Geschossrohr aus keramikwerkstoff
WO1985005173A1 (en) * 1984-05-02 1985-11-21 General Electric Company Wear resistant gun barrel and method of forming
EP0602877A1 (de) * 1992-12-14 1994-06-22 General Electric Company Aus mehreren Schichten bestehendes Verbundrohr für eine Waffe
BG66083B1 (bg) * 1999-05-28 2011-03-31 Neuralab Limited Фармацевтични състави, съдържащи антитела и антитела за профилактика и лечение на амилоидогенно заболяване

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE878999A (fr) * 1979-09-26 1980-03-26 Herstal Sa Canon composite et procede pour sa fabrication
US4669212A (en) * 1984-10-29 1987-06-02 General Electric Company Gun barrel for use at high temperature
US5928799A (en) * 1995-06-14 1999-07-27 Ultramet High temperature, high pressure, erosion and corrosion resistant composite structure
SE516130C2 (sv) * 1999-03-15 2001-11-19 Damasteel Ab Ämne för metallprodukt, förfarande för framställning av metallprodukt samt metallprodukt
US6520360B1 (en) 2001-10-19 2003-02-18 Miner Enterprises, Inc Housing for draft gear
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
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
US8910409B1 (en) 2010-02-09 2014-12-16 Ati Properties, Inc. System and method of producing autofrettage in tubular components using a flowforming process
IT1402399B1 (it) * 2010-10-21 2013-09-04 Protec Surface Technologies S R L Canna perfezionata.
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
US9546837B1 (en) 2015-10-09 2017-01-17 Bh5773 Ltd Advanced gun barrel
WO2021030801A1 (en) * 2019-08-15 2021-02-18 Vista Outdoor Operations Llc Devices and methods for extraction of high pressure cartridge casings

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US464978A (en) * 1891-12-15 Reinhard mannesmann
CH2479A (de) * 1890-06-16 1890-11-15 Reinhard Jun Mannesmann Rohr oder Lauf für Feuerwaffen
US1792082A (en) * 1926-01-13 1931-02-10 Chemical Treat Company Inc Metallic coating and process of producing the same
US2498052A (en) * 1946-01-05 1950-02-21 Nicol H Smith Method of retarding erosion of gun barrels
US2792657A (en) * 1946-05-16 1957-05-21 Battelle Development Corp Gun barrel coated with tantalum
US2799959A (en) * 1947-06-11 1957-07-23 Elburt F Osborn Nitrided gun barrel with chromium deposit
GB743111A (en) * 1949-10-06 1956-01-11 Birmingham Small Arms Co Ltd Improvements in or relating to firearms
BE552004A (de) * 1952-10-24
CH347733A (de) * 1956-02-29 1960-07-15 Eidg Waffenfabrik Waffenlauf, insbesondere für automatische Waffen, und Verfahren zu dessen Herstellung
US3442172A (en) * 1959-03-13 1969-05-06 Fansteel Inc Gun barrel liner
US3261121A (en) * 1961-10-13 1966-07-19 Joseph R Eves Gun barrel with explosively welded liner
BE878999A (fr) * 1979-09-26 1980-03-26 Herstal Sa Canon composite et procede pour sa fabrication

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122316A1 (de) * 1981-06-05 1982-12-23 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Geschossrohr aus keramikwerkstoff
WO1985005173A1 (en) * 1984-05-02 1985-11-21 General Electric Company Wear resistant gun barrel and method of forming
US4577431A (en) * 1984-05-02 1986-03-25 General Electric Company Wear resistant gun barrel and method of forming
EP0602877A1 (de) * 1992-12-14 1994-06-22 General Electric Company Aus mehreren Schichten bestehendes Verbundrohr für eine Waffe
TR28217A (tr) * 1992-12-14 1996-02-29 Gen Electric Cok-tabakali kompozit top namlusu.
BG66083B1 (bg) * 1999-05-28 2011-03-31 Neuralab Limited Фармацевтични състави, съдържащи антитела и антитела за профилактика и лечение на амилоидогенно заболяване

Also Published As

Publication number Publication date
EP0026511A3 (en) 1981-11-11
US4409881A (en) 1983-10-18
BE878999A (fr) 1980-03-26
IL60981A (en) 1983-05-15
DE3064492D1 (en) 1983-09-08
ATE4393T1 (de) 1983-08-15
EP0026511B1 (de) 1983-08-03

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