EP1940574B1 - Verfahren zur herstellung eines penetrators - Google Patents

Verfahren zur herstellung eines penetrators Download PDF

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Publication number
EP1940574B1
EP1940574B1 EP06792334A EP06792334A EP1940574B1 EP 1940574 B1 EP1940574 B1 EP 1940574B1 EP 06792334 A EP06792334 A EP 06792334A EP 06792334 A EP06792334 A EP 06792334A EP 1940574 B1 EP1940574 B1 EP 1940574B1
Authority
EP
European Patent Office
Prior art keywords
tungsten
penetrator
powder mixture
weight
core
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
EP06792334A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1940574A1 (de
Inventor
Cornelis Taal
Rene Oudelhoven
Michael Vagedes
Uta Lenz
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
Priority to PL06792334T priority Critical patent/PL1940574T3/pl
Publication of EP1940574A1 publication Critical patent/EP1940574A1/de
Application granted granted Critical
Publication of EP1940574B1 publication Critical patent/EP1940574B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/06—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with hard or heavy core; Kinetic energy penetrators
    • 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
    • B22F3/004—Filling molds with 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • 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
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a method for producing a penetrator with a tungsten heavy metal (WSM) penetrator core with a high proportion of tungsten and an outer jacket which consists of a material that is more ductile than the penetrator core.
  • WSM tungsten heavy metal
  • Tungsten-heavy metal alloy penetrators typically have a high tungsten content (90 to about 97% by weight), because of their high masses, these materials have good penetration performance on normal impact on simple armored targets.
  • the high proportion of tungsten leads to embrittlement of the material, so that it often comes before the penetration of the target, a breakup of the penetrator with obliquely arranged targets and multi-plate targets.
  • the kinetic energy of the resulting relatively short fragments is usually insufficient due to their low mass to penetrate the remaining target plate (s).
  • the brittleness of well-known WSM penetrators often increases in that, during mechanical processing, for example by turning or grinding, cracks of the near-surface tungsten grains occur, which can then lead to premature failure of the respective penetrator under load propagation through crack propagation.
  • a penetrator in which a fracture-sensitive penetrator core consisting, for example, of tungsten heavy metal is protected by means of a ductile sheath.
  • the ductile casing which consists for example of steel, is applied to the penetrator core in a form-fitting manner after the tungsten core has been produced by pressure-rolling.
  • the AT 383 979 B proposes a method of making penetrators for subcaliber balancing projectiles and casing for use in the practice of this method.
  • a sleeve made of a material of high toughness is hot drawn onto a core consisting of heavy metals, heavy metal alloys or heavy metal sintering materials and then the sleeve is cooled.
  • the sleeve is made of pure conversion-free pure iron or high-strength tempered steel.
  • the invention has for its object to provide a comparison with other known methods simpler method for producing a penetrator with brittle penetrating core and ductile jacket.
  • the invention is based on the idea of concentrically introducing in a mold adapted to the outer dimensions of the penetrator, a double hopper filling device adapted to the dimensions of the penetrator core. While in the inner tube, a first tungsten-containing powder mixture with high tungsten content (90-99 wt.%) Is filled to produce the penetrator core, in the annular space located between the outer wall of the inner tube and the inner wall of the mold, a second tungsten-containing powder mixture with respect to the first Powder mixture lower tungsten content (approximately between 83% and 91%) introduced. After removal of the inner tube from the mold then carried out in a conventional manner required for the preparation of the penetrator pressing the powder mixture, the sintering, the cold forming of the compact and finally the finishing of the Penetratorrohlings.
  • a penetrator is produced with a core of high density and a tough outer sheath frictionally connected to the penetrator core, wherein the outer jacket prevents breakage on oblique target impact.
  • a mixture with 95% by weight of tungsten and a balance of nickel and cobalt powder in a weight ratio of 9: 1 has proven to be the first tungsten-containing powder mixture.
  • tungsten-containing powder mixture in an advantageous manner, a mixture of 87% by weight of tungsten and a balance of nickel and cobalt powder, likewise in a weight ratio of 9: 1, was obtained as the second tungsten-containing powder mixture in an advantageous manner.
  • a first tungsten-containing powder mixture 4 is introduced with a tungsten content of 95 wt .-% and a balance of nickel and cobalt powder in a weight ratio of 9: 1.
  • a second tungsten-containing powder mixture 5 having a tungsten content of 87% by weight and likewise a balance of nickel and cobalt powder in a weight ratio of 9: 1 is introduced into the annular space.
  • the Doppeltrichterein spallvorraum is removed from the press matrix 1 and then hydrostatically compressed the entire powder mixture after a for example caused by shaking pre-compression. Then the compact is then finished according to the desired specifications Penetrators sintered in a conventional manner, heat-treated, cold-formed, hot outsourced and then finished by a machining process, such as from US 3,979,234 known.
  • Fig.2 shows the longitudinal section of a portion of the penetrator 10 produced by the process according to the invention.
  • 6 denoted by 6 of the relatively high due to the high proportion of tungsten penetrant core and with 7 due to the lower tungsten content significantly more ductile outer sheath with thread.
  • transition region 8 Between the penetrator core 6 and the outer jacket 7, there results a transition region 8 with a preferred thickness of between 25 ⁇ m and 200 ⁇ m, which ensures good adhesion between the core 6 and the jacket 7.
  • the tough shell 7 is preferably removed in the tip-side region, for example by machining, so that it is made of a core material tip and breaks brittle in the target impact, whereby ever-sharp Anb redesignkanten arise that ensure a good Anb exert .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Powder Metallurgy (AREA)
EP06792334A 2005-10-18 2006-09-30 Verfahren zur herstellung eines penetrators Active EP1940574B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06792334T PL1940574T3 (pl) 2005-10-18 2006-09-30 Sposób wytwarzania penetratora

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005049748A DE102005049748A1 (de) 2005-10-18 2005-10-18 Verfahren zur Herstellung eines Penetrators
PCT/EP2006/009509 WO2007045342A1 (de) 2005-10-18 2006-09-30 Verfahren zur herstellung eines penetrators

Publications (2)

Publication Number Publication Date
EP1940574A1 EP1940574A1 (de) 2008-07-09
EP1940574B1 true EP1940574B1 (de) 2012-06-06

Family

ID=37433842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792334A Active EP1940574B1 (de) 2005-10-18 2006-09-30 Verfahren zur herstellung eines penetrators

Country Status (5)

Country Link
US (1) US8580188B2 (pl)
EP (1) EP1940574B1 (pl)
DE (1) DE102005049748A1 (pl)
PL (1) PL1940574T3 (pl)
WO (1) WO2007045342A1 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10240906B2 (en) 2015-07-22 2019-03-26 Cime Bocuze Penetrator incorporating a core enclosed in a ductile sheath and manufacturing process for such a penetrator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037702A1 (de) 2007-08-09 2009-02-12 Rheinmetall Waffe Munition Gmbh Verfahren und Vorrichtung zur Herstellung eines rohrförmigen Festkörpers aus einer hochschmelzenden Wolfram-Schwermetalllegierung, insbesondere als Halbzeug für die Fertigung eines Penetrators für ein Wuchtgeschoss mit Splitterwirkung
RU2361697C2 (ru) * 2007-09-14 2009-07-20 Общество с ограниченной ответственностью Торговый дом "Абразивные заводы Урала" Способ получения вольфрамовых заготовок
JP6682601B2 (ja) * 2018-10-31 2020-04-15 Ntn株式会社 圧粉体の成形方法および焼結軸受の製造方法
CN109795096A (zh) * 2018-12-27 2019-05-24 中山伟强科技有限公司 一种导热装置封口方法
CN114147233B (zh) * 2022-02-10 2022-04-12 北京煜鼎增材制造研究院有限公司 一种导弹战斗部壳体及其增材制造方法
CN115625337B (zh) * 2022-12-06 2024-07-09 成都虹波实业股份有限公司 一种钨合金复合材料及制备方法

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US2552090A (en) * 1945-05-04 1951-05-08 Stupakoff Ceramic & Mfg Compan Method and apparatus for molding ceramic articles
DE2460013C3 (de) * 1974-12-19 1978-08-24 Sintermetallwerk Krebsoege Gmbh, 5608 Radevormwald Verfahren zum Herstellen metallischer Formkörper
US3979234A (en) * 1975-09-18 1976-09-07 The United States Of America As Represented By The United States Energy Research And Development Administration Process for fabricating articles of tungsten-nickel-iron alloy
AT383979B (de) 1985-10-31 1987-09-10 Voest Alpine Ag Verfahren zur herstellung von penetratoren fuer unterkalibrige wuchtgeschosse sowie huelle zur verwendung bei der durchfuehrung dieses verfahrens
DE3821474C1 (de) 1988-06-25 1998-08-27 Nwm De Kruithoorn Bv Unterkalibriges, drallstabilisiertes Mehrzweckgeschoß
DE4016051C2 (de) 1990-05-18 1994-10-06 Rheinmetall Gmbh Mantelpenetrator
US5064462A (en) * 1990-10-19 1991-11-12 Gte Products Corporation Tungsten penetrator
DE4113177C2 (de) 1991-04-23 1993-10-21 Nwm De Kruithoorn Bv Verfahren zur Herstellung eines Penetrators
DE4318827C2 (de) 1993-06-07 1996-08-08 Nwm De Kruithoorn Bv Schwermetallegierung und Verfahren zu ihrer Herstellung
US5821441A (en) * 1993-10-08 1998-10-13 Sumitomo Electric Industries, Ltd. Tough and corrosion-resistant tungsten based sintered alloy and method of preparing the same
HU223802B1 (hu) * 1997-08-26 2005-01-28 Sm Schweizerische Munitionsunternehmung Ag. Kis kaliberű, köpenyes, kemény magú lövedék, valamint eljárás ilyen lövedékek előállítására
DE60016961D1 (de) * 1999-07-13 2005-01-27 Gen Atomics San Diego Einkristall aus wolframlegierung für penetrator und herstellungsverfahren dafür
US7059233B2 (en) * 2002-10-31 2006-06-13 Amick Darryl D Tungsten-containing articles and methods for forming the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10240906B2 (en) 2015-07-22 2019-03-26 Cime Bocuze Penetrator incorporating a core enclosed in a ductile sheath and manufacturing process for such a penetrator

Also Published As

Publication number Publication date
WO2007045342A1 (de) 2007-04-26
EP1940574A1 (de) 2008-07-09
PL1940574T3 (pl) 2012-11-30
US20090169411A1 (en) 2009-07-02
US8580188B2 (en) 2013-11-12
DE102005049748A1 (de) 2007-04-19

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