EP2027298B1 - Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon - Google Patents

Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon Download PDF

Info

Publication number
EP2027298B1
EP2027298B1 EP07725351A EP07725351A EP2027298B1 EP 2027298 B1 EP2027298 B1 EP 2027298B1 EP 07725351 A EP07725351 A EP 07725351A EP 07725351 A EP07725351 A EP 07725351A EP 2027298 B1 EP2027298 B1 EP 2027298B1
Authority
EP
European Patent Office
Prior art keywords
max
steel
barrel
blanks
barrel according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07725351A
Other languages
German (de)
French (fr)
Other versions
EP2027298A1 (en
Inventor
Wolfgang Arrenbrecht
Walter Grimm
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.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition 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
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP2027298A1 publication Critical patent/EP2027298A1/en
Application granted granted Critical
Publication of EP2027298B1 publication Critical patent/EP2027298B1/en
Active 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
    • F41A21/20—Barrels or gun tubes characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/12—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes barrels for ordnance
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium

Definitions

  • the invention relates to a production method for gun barrel blanks for machine guns, in particular in the caliber range 25-50mm.
  • Standard materials for such highly loaded machine guns are heat-resistant CrMoV alloyed tempering steels, such as the previously used steel 32 CrMoV 12-10, material no. 1.7765 according to Stahl-Eisen-Liste (Verlag Stahleisen, Dusseldorf) for 30 mm machine guns.
  • This material meets the requirements of high yield strength (at least 950 N / mm 2 ) with high heat resistance up to 450 ° (at least 550 N / mm 2 ) to achieve a sufficiently long service life of the pipes.
  • the invention has the object to show a method for producing tubes in the middle caliber range with higher cadence and a corresponding pipe, which also meets the new requirements.
  • the invention is based on the idea, similar to the tubes of the large caliber range, to provide a change in the tube material as well as their shares as well as an already known from the large caliber, but specially adapted manufacturing process for medium caliber tubes.
  • a tube for the middle caliber in functional use is exposed to a higher continuous load, as is known in large calibers, is included in the further considerations, the requirement for these medium caliber weapons that the so-called first shot of a Mittelkaliber- or Rapid Firearm in practice should provide the necessary accuracy of hit. Therefore, when choosing the pipe material is also to be considered that the gun barrel is designed for single shot as well as for high cadence.
  • the new material concept be developed on the basis of an electrofusion-melted and suspended-rotationally tempered NiCrMoV steel, which even allows the steel known for large-caliber weapons to be 35NiCrMoV 12-5, material no. 1.6959 largely corresponds.
  • This steel has hitherto not been used for high-performance machine guns, in particular because of the high heat resistance requirements for the pipe.
  • this steel in modified form in conjunction with increased coating strength corresponds to the required heat resistance values.
  • this new NiCrMoV steel has a significantly increased toughness potential due to its martensitic microstructure, in contrast to the Baintian CrMoV steel. Due to the high toughness, the required safety requirements up to -50 ° C can be met.
  • the tube produced by the new method is characterized by the fact that a higher yield strength is achieved (about 1050 N / mm 2 ). Furthermore, the pipe has a sufficiently high impact strength and fracture toughness of up to -50 ° C. and has a sufficiently high heat resistance of up to + 50 ° C. The high degree of purity (K o value of about 12) is a further advantage.
  • the production of the gun barrel blank takes place without direct tensions, ie, the tempering takes place without subsequent straightening operation.
  • the steel is preferably remelted in the cast state using the ESU process (electro-slag remelting process).
  • the high microstructural homogeneity associated with this is the basis for the low-warpage annealing, which is carried out by means of oil or water cooling in the vertical dip direction.
  • the blanks, forged as a rod are tempered by the vertical liquid coating to yield strengths> 1000 N / mm 2 .
  • the rods rotate permanently about their axis or are mechanically rotated permanently about their axis. The mechanical processing takes place without prior straightening operation.

Description

Die Erfindung betrifft ein Herstellungsverfahren für Kanonenrohrrohlinge für Maschinenkanonen insbesondere im Kaliberbereich 25-50mm.The invention relates to a production method for gun barrel blanks for machine guns, in particular in the caliber range 25-50mm.

Standartwerkstoffe für derartig hoch belastete Maschinenkanonen sind warmfeste CrMoVlegierte Vergütungsstähle, wie der bisher gebräuchliche Stahl 32 CrMoV 12-10, Werkstoff - Nr. 1.7765 nach Stahl-Eisen-Liste (Verlag Stahleisen, Düsseldorf) für 30 mm Maschinenkanonen. Dieser Werkstoff erfüllt die Anforderungsmerkmale von hoher Streckgrenze (min. 950 N/mm2) bei hoher Warmfestigkeit bis 450° (min. 550 N/mm2) zur Erreichung einer ausreichend hohen Lebensdauer der Rohre.Standard materials for such highly loaded machine guns are heat-resistant CrMoV alloyed tempering steels, such as the previously used steel 32 CrMoV 12-10, material no. 1.7765 according to Stahl-Eisen-Liste (Verlag Stahleisen, Dusseldorf) for 30 mm machine guns. This material meets the requirements of high yield strength (at least 950 N / mm 2 ) with high heat resistance up to 450 ° (at least 550 N / mm 2 ) to achieve a sufficiently long service life of the pipes.

Im Rahmen der Leistungssteigerung, Qualitätsverbesserung und Erhöhung des Sicherheitsstandards werden auch höhere Anforderungen an den Werkstoff als auch die Güte des Schmiederohlings gestellt. Diese resultieren aus den Entwicklungsmerkmalen wie erhöhte Gasdruckbelastung durch neue Munitionskonzepte, Induzierung von Eigenspannungen durch hydraulisches Aufweiten der Rohrinnenwand zur Verbesserung der Ermüdungslebensdauer, größere Anforderungen an die Zielgenauigkeit infolge erhöhter Mündungsgeschwindigkeiten der neuen Munitionen, gute Verchrombarkeit und Haltbarkeit der Chromschicht beim Beschuss und höheres Sicherheitspotential gegen Sprödbruch im Temperaturbereich - 50 bis + 80°C.In the context of performance enhancement, quality improvement and increase of the safety standard also higher demands are placed on the material as well as the quality of the forging blank. These result from the development features such as increased gas pressure load by new ammunition concepts, inducing residual stresses by hydraulic expansion of the pipe inner wall to improve the fatigue life, greater accuracy requirements due to increased muzzle velocities of the new ammunition, good chrome plating and durability of the chromium layer during firing and higher safety potential against brittle fracture in the temperature range - 50 to + 80 ° C.

Die eingesetzte Stahl - Güte 32 CrMoV 12-10 hat zwar ein ausreichendes Potential zur Erfüllung der Festigkeitsanforderungen beispielsweise an eine neue 30 mm Maschinenkanone, verfehlen aber die Zielvorgaben bezüglich des geforderten Zähigkeitswertes. Weitere Unzulänglichkeiten des herkömmlichen Werkstoffes sind der geringe Reinheitsgrad bei der offenen Verschmelzung und die ausgeprägte Neigung zur Rohrverkrümmung infolge von Richteinspannung beim Beschuss.Although the steel grade 32 CrMoV 12-10 used has sufficient potential to meet the strength requirements, for example, for a new 30 mm machine gun, it misses the targets with regard to the required toughness value. Other shortcomings of the conventional material are the low degree of purity in the open merger and the pronounced tendency to tube distortion due to Richteinspannung during firing.

Aus der DE 101 11 304 C2 ist ein Verfahren zur Herstellung von Rohren für schwere Geschütze bekannt. Der in unterschiedlichen Zusammensetzungen hergestellte Vergütungsstahl wird gehärtet und angelassen, anschließend gebohrt und dann fertig bearbeitet. Dadurch wird erreicht, dass ein Maximum an Geradheit erreicht wird und die so gefertigten Rohre gegenüber herkömmlich gerichteten Rohren qualitativ überlegen sind. Bekanntlich werden jedoch an Großkaliberrohlinge andere Anforderungen gestellt, als an Mittelkaliberrohlinge. Mittelkaliberwaffen sind einer höheren Kadenz ausgesetzt, als Großkaliberwaffen.From the DE 101 11 304 C2 For example, a method for producing heavy gunpipes is known. The tempering steel made in different compositions is hardened and tempered, then drilled and then finish machined. Thereby is achieved that a maximum of straightness is achieved and the pipes produced in this way are qualitatively superior to conventionally oriented pipes. However, as is well known, requirements are made on large caliber blanks other than medium caliber blanks. Medium caliber weapons are exposed to higher cadence than large caliber weapons.

DE /953/260 A1 offensat ein Umschmelztechik für NiCrMoV- Stähle zum Ausgleich der Kristallseigeung DE / 953/260 A1 A remelting technique for NiCrMoV steels to compensate for crystal segregation

Auf dieses Verfahren aufbauend stellt sich die Erfindung die Aufgabe, ein Verfahren zur Herstellung für Rohre im Mittelkaliberbereich mit höherer Kadenz sowie ein entsprechendes Rohr aufzuzeigen, das auch den neuen Anforderungen gerecht wird.Based on this method, the invention has the object to show a method for producing tubes in the middle caliber range with higher cadence and a corresponding pipe, which also meets the new requirements.

Gelöst wird die Aufgabe durch die Merkmale des Anspruchs 1. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen aufgezeigt.The object is achieved by the features of claim 1. Advantageous embodiments are shown in the subclaims.

Der Erfindung liegt die Idee zugrunde, ähnlich der Rohre des Großkaliberbereiches, eine Veränderung des Rohrmaterials als auch deren Anteile sowie ein aus dem Großkaliber bereits bekanntes, jedoch speziell angepasstes Herstellungsverfahren für Mittelkaliberrohre vorzusehen. Obwohl zu berücksichtigen ist, dass ein Rohr für das Mittelkaliber in funktionalem Gebrauch einer höheren Dauerbelastung ausgesetzt ist, als das bei Großkalibern bekannt ist, fließt bei den weiteren Überlegungen auch die Anforderung an diese Mittelkaliberwaffen mit ein, dass der so genannte Erstschuss einer Mittelkaliber- bzw. Schnellfeuerwaffe in der Praxis die notwendige Treffergenauigkeit erbringen soll. Daher ist bei der Wahl des Rohrmaterials auch zu berücksichtigen, dass das Waffenrohr für Einzelschuss als auch für Hochkadenz auszulegen ist. Entsprechend wird vorgeschlagen, dass das neue zum Tragen kommende Werkstoffkonzept auf Basis eines elektro- schlacke- umgeschmolzen und hängend- rotierend vergüteten NiCrMoV- Stahles zu entwickeln, welches damit sogar dem Stahl den für großkalibrige Waffen bekannten Stahl 35NiCrMoV 12-5, Werkstoff-Nr. 1.6959 weitestgehend entspricht. Dieser Stahl wurde bisher für hochkadent arbeitende Maschinenkanonen insbesondere wegen der hohen Warmfestigkeits- Anforderungen an das Rohr nicht verwendet.The invention is based on the idea, similar to the tubes of the large caliber range, to provide a change in the tube material as well as their shares as well as an already known from the large caliber, but specially adapted manufacturing process for medium caliber tubes. Although it should be considered that a tube for the middle caliber in functional use is exposed to a higher continuous load, as is known in large calibers, is included in the further considerations, the requirement for these medium caliber weapons that the so-called first shot of a Mittelkaliber- or Rapid Firearm in practice should provide the necessary accuracy of hit. Therefore, when choosing the pipe material is also to be considered that the gun barrel is designed for single shot as well as for high cadence. Accordingly, it is proposed that the new material concept be developed on the basis of an electrofusion-melted and suspended-rotationally tempered NiCrMoV steel, which even allows the steel known for large-caliber weapons to be 35NiCrMoV 12-5, material no. 1.6959 largely corresponds. This steel has hitherto not been used for high-performance machine guns, in particular because of the high heat resistance requirements for the pipe.

Die Praxis hat zudem gezeigt, dass dieser Stahl in modifizierter Form in Verbindung mit erhöhter Vergütungsfestigkeit den geforderten Warmfestigkeitswerten entspricht. Gleichzeitig besitzt dieser neue NiCrMoV- Stahl aufgrund seiner martensitischen Gefügestruktur im Gegensatz zum baintischen CrMoV- Stahl ein deutlich erhöhtes Zähigkeitspotential. Aufgrund der hohen Zähigkeit können die geforderten Sicherheitsanforderungen bis -50°C erfüllt werden.Practice has also shown that this steel in modified form in conjunction with increased coating strength corresponds to the required heat resistance values. At the same time, this new NiCrMoV steel has a significantly increased toughness potential due to its martensitic microstructure, in contrast to the Baintian CrMoV steel. Due to the high toughness, the required safety requirements up to -50 ° C can be met.

Das mit dem neuen Verfahren hergestellte Rohr zeichnet sich dadurch aus, dass eine höhere Streckgrenze erreicht wird (ca. 1050 N/mm2). Des Weiteren weist das Rohr eine ausreichend hohe Kerbschlag- und Bruchzähigkeit bis - 50° C auf und besitzt eine ausreichend hohe Warmfestigkeit bis +50° C. Der hohe Reinheitsgrad (Ko -Wert max. ca. 12) ist ein weiterer Vorteil. Die Herstellung des Kanonenrohr-Rohlings erfolgt ohne Richteigenspannungen, d.h., das Vergüten erfolgt ohne nachfolgende Richtoperation.The tube produced by the new method is characterized by the fact that a higher yield strength is achieved (about 1050 N / mm 2 ). Furthermore, the pipe has a sufficiently high impact strength and fracture toughness of up to -50 ° C. and has a sufficiently high heat resistance of up to + 50 ° C. The high degree of purity (K o value of about 12) is a further advantage. The production of the gun barrel blank takes place without direct tensions, ie, the tempering takes place without subsequent straightening operation.

Ein Verfahren zur Herstellung von Kanonenrohr-Rohlingen für Maschinenkanonen im bevorzugten Kaliberbereich zwischen 25 - 50 mm zeichnet sich durch nachfolgende Zusammensetzung aus:

  • 0,25 -0,50,% Kohlenstoff
  • max. 0,60 % Silizium
  • mac.1,00 % Mangan
  • max. 0,010 % Phosphor
  • max. 0,010 % Schwefel
  • 1,00- 1,40 % Chrom
  • 2,00 -4,00 % Nickel
  • 0,30 - 0,70 % Molybdän
  • 0,10 - 0,30 Vanadium
  • max. 0,05 % Aluminium
und Rest aus Eisen und üblichen (unvermeidbaren) Verunreinigungen,
wobei die Rohlinge aus Umschmelzstahl oder aus offen erschmolzenem Stahl mit hohem Reinheitsgrad hergestellt werden.A method for producing gun barrel blanks for machine guns in the preferred caliber range between 25-50 mm is characterized by the following composition:
  • 0.25-0.50,% carbon
  • Max. 0.60% silicon
  • mac.1,00% manganese
  • Max. 0.010% phosphorus
  • Max. 0.010% sulfur
  • 1.00-1.40% chromium
  • 2.00 -4.00% nickel
  • 0.30-0.70% molybdenum
  • 0.10-0.30 vanadium
  • Max. 0.05% aluminum
and balance of iron and usual (unavoidable) impurities,
the blanks are made of remelted steel or open-cast high purity steel.

Als bevorzugt hat sich folgende Zusammensetzung des Vergütungsstahls erwiesen:

  • 0,30 -0,35,% Kohlenstoff
  • max. 0,40 % Silizium
  • 0,4 - 0,70 % Mangan
  • max. 0,005 % Phosphor
  • max. 0,005 % Schwefel
  • 1,00- 1,40 % Chrom
  • 2,50 - 3,3 % Nickel
  • 0,50 -0,60 % Molybdän
  • 0,10 - 0,20 Vanadium
  • max. 0,03 % Aluminium
und Rest aus Eisen und üblichen Verunreinigungen.The following composition of the tempering steel has proven to be preferred:
  • 0.30 -0.35,% carbon
  • Max. 0.40% silicon
  • 0.4-0.70% manganese
  • Max. 0.005% phosphorus
  • Max. 0.005% sulfur
  • 1.00-1.40% chromium
  • 2.50-3.3% nickel
  • 0.50-0.60% molybdenum
  • 0.10-0.20 vanadium
  • Max. 0.03% aluminum
and balance of iron and usual impurities.

Zur Sicherstellung der hohen Anforderungen an den Reinheitsgrad wird der Stahl bevorzugt im Gusszustand nach dem ESU- Verfahren (Elektro -Schlacke -Umschmelzverfahren) umgeschmolzen. Die damit verbundene hohe Gefüge-Homogenität (durch bessere Seigerung) ist die Basis für das verzugsarme Vergüten, welches mittels Öl- oder Wasserabkühlung in vertikaler Tauchrichtung durchgeführt wird. Die als Stab geschmiedeten Rohlinge werden dabei durch die vertikale Flüssigkeitsvergütung auf Streckgrenzen > 1000 N/mm2 angelassen. Während der Vergütungsbehandlung rotieren die Stäbe permanent um ihre Achse oder werden mechanisch permanent um ihre Achse gedreht. Die mechanische Bearbeitung erfolgt ohne vorherige Richtoperation.To ensure high purity requirements, the steel is preferably remelted in the cast state using the ESU process (electro-slag remelting process). The high microstructural homogeneity associated with this (due to better segregation) is the basis for the low-warpage annealing, which is carried out by means of oil or water cooling in the vertical dip direction. The blanks, forged as a rod, are tempered by the vertical liquid coating to yield strengths> 1000 N / mm 2 . During the tempering treatment, the rods rotate permanently about their axis or are mechanically rotated permanently about their axis. The mechanical processing takes place without prior straightening operation.

Mit dem neuen Stahl für ein Mittelkaliberrohr ist zudem eine bessere Autofrettage möglich (das Rohr wird warmfester - bis 500°C). Dadurch kann das Rohr selbst besser Eigenspannungen aufnehmen, wodurch das Druckaufnahmevermögen des Rohres erhöht wird.With the new steel for a medium caliber tube, a better Autofrettage is also possible (the tube is more resistant to heat - up to 500 ° C). As a result, the pipe itself can better absorb residual stresses, which increases the pressure absorption capacity of the pipe.

Claims (10)

  1. Process for the production of gun barrel blanks, consisting of NiCrMoV steel, for machine guns in the caliber range between 25-50 mm having the following composition
    - 0.25-0.50% carbon
    - max. 0.60% silicon
    - max. 1.00% manganese
    - max. 0.010% phosphorus
    - max. 0.010% sulfur
    - 1.00-1.40% chromium
    - 2.00-4.00% nickel
    - 0.30-0.70% molybdenum
    - 0.10-0.30% vanadium
    - max. 0.05% aluminum and
    - remainder iron and conventional impurities, wherein
    the steel is preferably remelted in the cast state using the electroslag remelting process prior to forging, such that the blanks are produced from remelted steel or from steel which is melted in the open and has a high degree of purity, and the high homogeneity of the microstructure which is associated therewith is the basis for the low-distortion heat treatment,
    a low-distortion heat treatment, which is carried out in the vertical dipping direction by means of oil or water cooling, and,
    during the heat treatment, the bars permanently rotate about their axis or are turned mechanically.
  2. Process according to Claim 1, characterized by the preferred composition of the steel from
    - 0.30-0.35% carbon
    - max. 0.40% silicon
    - 0.4-0.70% manganese
    - max. 0.005% phosphorus
    - max. 0.005% sulfur
    - 1.00-1.40% chromium
    - 2.50-3.3% nickel
    - 0.50-0.60% molybdenum
    - 0.10-0.20% vanadium
    - max. 0.03% aluminum and
    - remainder iron and conventional impurities.
  3. Process according to Claim 1 or 2, characterized in that the blanks which are forged as a bar are tempered by means of the vertical liquid treatment process to a yield strength of > 1000 N/mm2.
  4. Blank for the barrel of the machine gun in the caliber range between 25-50 mm, characterized by a heat-treated steel produced according to one of Claims 1 to 3.
  5. Barrel made from a blank according to Claim 4, characterized by a high toughness potential caused by a martensitic microstructure of the NiCrMoV steel.
  6. Barrel according to Claim 5, characterized by a relatively high yield strength of approximately 1050 N/mm2.
  7. Barrel according to Claim 5 or 6, characterized by a sufficiently high notched impact strength and fracture toughness down to -50°C.
  8. Barrel according to one of Claims 5 to 7, characterized by a sufficiently high heat resistance up to +50°C.
  9. Barrel according to one of Claims 5 to 8, produced by autofrettage.
  10. Barrel according to one of Claims 5 to 9, characterized by a heat resistance up to 500°C.
EP07725351A 2006-05-29 2007-05-18 Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon Active EP2027298B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006025241A DE102006025241A1 (en) 2006-05-29 2006-05-29 Method for producing forged steel for highly stressed weapons, tube blanks and a weapon equipped therewith
PCT/EP2007/004443 WO2007137714A1 (en) 2006-05-29 2007-05-18 Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon

Publications (2)

Publication Number Publication Date
EP2027298A1 EP2027298A1 (en) 2009-02-25
EP2027298B1 true EP2027298B1 (en) 2013-01-30

Family

ID=38293387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725351A Active EP2027298B1 (en) 2006-05-29 2007-05-18 Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon

Country Status (6)

Country Link
US (1) US20100003162A1 (en)
EP (1) EP2027298B1 (en)
JP (1) JP5778387B2 (en)
DE (1) DE102006025241A1 (en)
ES (1) ES2404508T3 (en)
WO (1) WO2007137714A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120112546A (en) * 2010-01-15 2012-10-11 가부시키가이샤 가네카 Non-woven fabric for filter, and process for production thereof
US20130323075A1 (en) * 2012-06-04 2013-12-05 General Electric Company Nickel-chromium-molybdenum-vanadium alloy and turbine component
US9738334B2 (en) * 2013-05-07 2017-08-22 Arcelormittal Track shoe having increased service life useful in a track drive system
CN103556069B (en) * 2013-11-04 2016-02-17 洛阳双瑞特种装备有限公司 A kind of gas cylinder seamless large-diameter pipes and manufacture method thereof
UA118320U (en) * 2017-06-01 2017-07-25 Товариство З Обмеженою Відповідальністю "Науково-Виробнича Компанія "Техімпекс" ENGINE ENGINE KT-7,62
CN108149154B (en) * 2017-12-01 2019-12-10 宝鼎科技股份有限公司 High-strength rotor shaft forging for high-voltage motor and heat treatment processing method
DE102018123278A1 (en) * 2018-09-21 2020-03-26 Rheinmetall Waffe Munition Gmbh Process for producing a heat-resistant weapon barrel provided with a swirl profile
CN114410892A (en) * 2022-02-16 2022-04-29 攀钢集团江油长城特殊钢有限公司 Preparation method of EN30B drill tool steel rolled round bar

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524684A (en) * 1967-11-11 1972-06-30 Mitsubishi Heavy Ind Ltd Process for the production of an ultra-high strength steel
DE1927822A1 (en) * 1969-05-31 1972-03-02 Heckler & Koch Gmbh Weapon barrel - produced using temper hardening process
US5524019A (en) * 1992-06-11 1996-06-04 The Japan Steel Works, Ltd. Electrode for electroslag remelting and process of producing alloy using the same
JPH08120400A (en) * 1994-10-25 1996-05-14 Japan Steel Works Ltd:The Steel for superhigh-pressure vessel and its production
DE19531260C5 (en) * 1995-08-25 2006-06-22 Edelstahlwerke Buderus Ag Process for producing a hot-work tool steel
JP2000080444A (en) * 1998-08-31 2000-03-21 Sumitomo Heavy Ind Ltd Alloy steel for gun barrel
DE19841671A1 (en) * 1998-09-11 2000-03-16 Rheinmetall W & M Gmbh Gun barrel
SE516130C2 (en) * 1999-03-15 2001-11-19 Damasteel Ab Substance for metal product, process for making metal product and metal product
DE10111304C2 (en) * 2001-03-09 2003-03-20 Buderus Edelstahlwerke Ag Process for the production of tubes for heavy guns

Also Published As

Publication number Publication date
JP5778387B2 (en) 2015-09-16
WO2007137714A1 (en) 2007-12-06
DE102006025241A1 (en) 2007-12-06
US20100003162A1 (en) 2010-01-07
EP2027298A1 (en) 2009-02-25
JP2009538983A (en) 2009-11-12
ES2404508T3 (en) 2013-05-28

Similar Documents

Publication Publication Date Title
EP2027298B1 (en) Method for the production of forged steel for weapons subject to heavy stresses, barrel blanks and a thus-equipped weapon
EP0114591B1 (en) Process for the production of arm barrels
EP1780293B2 (en) Procedure for manufacturing of steel starting material by warm deforming
CN104674121A (en) Armor steel plate with high anti-bullet property and manufacturing method of armor steel plate
US7537727B2 (en) Eglin steel—a low alloy high strength composition
RU2229959C2 (en) Blank for gun barrel, method for making gun barrel and gun barrel
DE10111304C2 (en) Process for the production of tubes for heavy guns
US20100037992A1 (en) Method for transforming steel blanks
Siagian et al. Development of steel as anti-ballistic combat vehicle material
AT508777B1 (en) STOREY OF FIREARMS
DE112017006053T5 (en) HIGH-TEN AND HIGH-TIMING TUBE FOR A PERFORIER PISTOL AND METHOD OF MANUFACTURING THEREOF
DE3437516C1 (en) Steel helmet and process for its manufacture
RU2429971C2 (en) Laminated protective armour material
DE1927822A1 (en) Weapon barrel - produced using temper hardening process
DE924757C (en) Compensation of workpieces which are exposed to high internal loads
CN108456823A (en) Steel pipe, its raw material, preparation method and hydraulic cylinder
JP6801727B2 (en) Mechanical screws and their manufacturing methods
DE10246165B4 (en) Use of a steel alloy
AT146177B (en) Gun barrels made of titanium-containing steels.
EP4190935A1 (en) Perforation gun tube and perforation gun
CN116970869A (en) Seamless steel pipe and preparation method and application thereof
AT148129B (en) Armor plates made of tungsten-containing chromium-nickel-silicon steels.
AT144353B (en) Chrome-tungsten steel for firearms, especially for air-cooled machine gun barrels.
CN110699601A (en) Q690-grade high-strength steel plate and manufacturing method thereof
BARÉNYI et al. TRENDS IN MECHANICAL PROPERTIES ENHANCING OF STEELS USED FOR GUN BARRELS PRODUCTION.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080903

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17Q First examination report despatched

Effective date: 20090512

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RHEINMETALL WAFFE MUNITION GMBH

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 595731

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130215

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007011276

Country of ref document: DE

Effective date: 20130321

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: WAGNER PATENT AG, CH

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2404508

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20130528

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130530

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130530

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130501

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

BERE Be: lapsed

Owner name: RHEINMETALL WAFFE MUNITION G.M.B.H.

Effective date: 20130531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

26N No opposition filed

Effective date: 20131031

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007011276

Country of ref document: DE

Effective date: 20131031

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: BAECHERSTRASSE 9, 8832 WOLLERAU (CH)

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 595731

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20070518

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130518

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007011276

Country of ref document: DE

Representative=s name: DREISS PATENTANWAELTE PARTG MBB, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007011276

Country of ref document: DE

Representative=s name: DREISS PATENTANWAELTE PARTG MBB, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230526

Year of fee payment: 17

Ref country code: DE

Payment date: 20220620

Year of fee payment: 17

Ref country code: CH

Payment date: 20230605

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230519

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230523

Year of fee payment: 17

Ref country code: ES

Payment date: 20230724

Year of fee payment: 17