EP0248302B1 - Füllmittel für Zerfallgeschosse und Verfahren zu seiner Herstellung - Google Patents

Füllmittel für Zerfallgeschosse und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0248302B1
EP0248302B1 EP87107549A EP87107549A EP0248302B1 EP 0248302 B1 EP0248302 B1 EP 0248302B1 EP 87107549 A EP87107549 A EP 87107549A EP 87107549 A EP87107549 A EP 87107549A EP 0248302 B1 EP0248302 B1 EP 0248302B1
Authority
EP
European Patent Office
Prior art keywords
steel powder
impact
dummy
minutes
shells
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 - Lifetime
Application number
EP87107549A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0248302A3 (en
EP0248302A2 (de
Inventor
Johan Sipke Leemans
Heinz Josef Dorweiler
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.)
Vodafone GmbH
NWM de Kruithoorn BV
Original Assignee
Mannesmann AG
NWM de Kruithoorn BV
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 Mannesmann AG, NWM de Kruithoorn BV filed Critical Mannesmann AG
Priority to AT87107549T priority Critical patent/ATE72484T1/de
Publication of EP0248302A2 publication Critical patent/EP0248302A2/de
Publication of EP0248302A3 publication Critical patent/EP0248302A3/de
Application granted granted Critical
Publication of EP0248302B1 publication Critical patent/EP0248302B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/14—Projectiles or missiles disintegrating in flight or upon impact
    • F42B8/16—Projectiles or missiles disintegrating in flight or upon impact containing an inert filler in powder or granular form

Definitions

  • the invention relates to a filler according to claim 1 and a method for its production.
  • a generic filler is known from DE-PS 21 60 187 (US-PS 3,951,035). It has proven itself well for the following reasons: It reliably fulfills the primary safety conditions (a paper of 200 g / m2 quality held open 40 m before the muzzle of the weapon barrel must not be perforated by any of the steel powder particles will); it is also inexpensive to manufacture and meets the strict requirements of responsible environmental protection. The latter plays an important role in view of the fact that it is not possible to collect the steel powder scattered during the bombardment and that maneuvering areas are used almost regularly for agriculture and / or forestry. This use is in no way impaired, since the steel powder is not only harmless to pasture cattle and game, but is compatible.
  • the invention is therefore based on the object to provide a generic filler and a method for its production, with which the spatial danger area is substantially restricted or reduced while maintaining the intestinal compatibility of the powder particles.
  • the safety distance to be maintained before the muzzle of the weapon barrel when bombarding maneuver ammunition with decay projectiles using the steel powder according to the invention is reduced significantly, from 40 to 10 m.
  • the invention not only overcomes a technical prejudice, but also achieves particular economic viability; because in the known methods the screened undersize can only be used again in a melting unit. According to the invention, this grain fraction in the range below 0.25 mm represents the desired and preferred grain size.
  • the procedure for producing the steel powder and the compact according to the invention is as follows: A steel powder, which was obtained by atomizing a corresponding steel melt and subsequent reducing soft annealing between 900 ° and 1050 ° C., is subjected to impact impact and scrubbing treatment in a conventional hammer mill for at least 1 hour. Known impact and abrasion treatments of the steel powder in the hammer mill that have been known up to now take approximately 15 to 30 minutes. Thanks to the long-lasting impact and abrasion treatment of the steel powder according to the invention, the individual powder grain surfaces are compacted and smoothed in such a way that the grains, even after exposure to high pressing pressures of, for. B.
  • the powder is sieved or adjusted to a grain size of less than 0.315 mm, preferably less than 0.25 mm. From the sieved steel powder of the grain spectrum according to the invention several z. B. five test or test compacts, which are subjected to a special drum test to determine whether the steel powder meets the conditions according to the invention for use as a filler and / or compact for decay bullets.
  • the drum test of the test specimens with a diameter of 20 mm, a density of 7.15 ⁇ 0.02 g / cm3 and a weight of 32.5 ⁇ 0.1 g is carried out according to steel-iron test sheet 87-69, 1st edition December 1969 with modified test equipment (the wall of the rotating drum is designed as a sieve with a 1 mm mesh size). It is required that all fragments of the test specimen or specimens have completely disintegrated after 200 to 600 revolutions, preferably about 400 revolutions, and have left the drum.
  • a steel powder of this type would then have to be checked by trial bombardment in a practical experiment to determine whether it could still be used. If the test conditions are met, the steel powder can be pressed as a filler and / or for the production of compacts for inclusion in decay bullets according to the invention.
  • the resulting density of the compact depends on its height and shape and is between 6.5 and 7.15 g / cm3. Experience has shown that a more favorable result is achieved in a conventional hammer mill with an operating time of at least 60 min, preferably 120 min.
  • zinc stearate can be added to the steel powder as a pressure-relieving lubricant, the amount being in the range from about 0.3 to about 0.55% by weight, but preferably 0.5% by weight.
  • a release agent can be added to the steel powder to be pressed without or with zinc stearate before pressing. Flame black is particularly suitable for this. This prevents the pressed powder grains from sticking to one another, with small additions being sufficient.
  • This steel powder has a bulk density of 4.36 g / cm3.
  • the sieve analysis can be done e.g. B. by modifying the molten steel atomization parameters, the impact and abrasion treatment or by temporarily sieving certain grain fractions to achieve specific properties.
  • the steel powder according to the invention is not only used as a filler (vibrated), but especially for production of pressed bodies suitable for decay bullets in 20 mm caliber and also for larger calibers, preferably 35 mm or 40 mm.

Landscapes

  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Saccharide Compounds (AREA)
  • Steroid Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Processing Of Solid Wastes (AREA)
  • Inorganic Insulating Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paper (AREA)
  • Polymerisation Methods In General (AREA)
EP87107549A 1986-06-03 1987-05-23 Füllmittel für Zerfallgeschosse und Verfahren zu seiner Herstellung Expired - Lifetime EP0248302B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107549T ATE72484T1 (de) 1986-06-03 1987-05-23 Fuellmittel fuer zerfallgeschosse und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863618205 DE3618205A1 (de) 1986-06-03 1986-06-03 Rotationssymmetrischer presskoerper fuer zerfallgeschosse und verfahren zu seiner herstellung
DE3618205 1986-06-03

Publications (3)

Publication Number Publication Date
EP0248302A2 EP0248302A2 (de) 1987-12-09
EP0248302A3 EP0248302A3 (en) 1989-10-25
EP0248302B1 true EP0248302B1 (de) 1992-02-05

Family

ID=6301940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107549A Expired - Lifetime EP0248302B1 (de) 1986-06-03 1987-05-23 Füllmittel für Zerfallgeschosse und Verfahren zu seiner Herstellung

Country Status (10)

Country Link
US (1) US4902346A (enrdf_load_stackoverflow)
EP (1) EP0248302B1 (enrdf_load_stackoverflow)
JP (2) JP2664374B2 (enrdf_load_stackoverflow)
AT (1) ATE72484T1 (enrdf_load_stackoverflow)
CA (1) CA1325534C (enrdf_load_stackoverflow)
DE (2) DE3618205A1 (enrdf_load_stackoverflow)
ES (1) ES2028826T3 (enrdf_load_stackoverflow)
FI (1) FI90916C (enrdf_load_stackoverflow)
IL (1) IL82742A (enrdf_load_stackoverflow)
NO (1) NO174642C (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917143A (en) † 1997-08-08 1999-06-29 Remington Arms Company, Inc. Frangible powdered iron projectiles
AU2002217099A1 (en) * 2000-12-15 2002-06-24 Unilever Plc Laundry composition
DE10141167A1 (de) * 2001-08-22 2003-03-13 Diehl Munitionssysteme Gmbh Ballistisches Übungsgeschoß für Rohrwaffen
US20160091290A1 (en) * 2014-09-29 2016-03-31 Pm Ballistics Llc Lead free frangible iron bullets

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1246474B (de) * 1963-08-07 1967-08-03 Knapsack Ag Zerfallgeschoss fuer Geschuetze
DE1215028B (de) * 1964-07-18 1966-04-21 Diehl Fa Zerfallkoerper und Verfahren zu seiner Herstellung
DE1282866B (de) * 1965-06-04 1968-11-14 Karlsruhe Augsburg Iweka Verwendung eines nach dem Roheisenzunder-Verfahren hergestellten Eisenpulvers zur Herstellung von Presslingen fuer Manoeverpatronen-Zerfallgeschosse
DE1286703B (de) * 1966-03-11 1969-01-09 Rheinmetall Gmbh Verfahren zur Herstellung von Zerfallkoerpern fuer UEbungsmunition
BE790733A (fr) * 1971-12-01 1973-02-15 Nederl Wapen & Munitie Perfectionnements a la fabrication a partir d'une poudre de ferde projectiles susceptibles de se desagreger pour des munitions d'exercice
DE3421841A1 (de) * 1984-06-13 1986-01-16 Heide, Marion, 4030 Ratingen Unterkalibrige uebungspatrone

Also Published As

Publication number Publication date
JP2664374B2 (ja) 1997-10-15
NO174642C (no) 1994-06-08
ES2028826T3 (es) 1992-07-16
NO872103L (no) 1987-12-04
FI872202A0 (fi) 1987-05-19
DE3618205C2 (enrdf_load_stackoverflow) 1989-09-28
US4902346A (en) 1990-02-20
FI90916C (fi) 1994-04-11
EP0248302A3 (en) 1989-10-25
IL82742A0 (en) 1987-12-20
NO872103D0 (no) 1987-05-20
DE3776592D1 (de) 1992-03-19
DE3618205A1 (de) 1987-12-17
ATE72484T1 (de) 1992-02-15
FI90916B (fi) 1993-12-31
NO174642B (no) 1994-02-28
JPH09310101A (ja) 1997-12-02
EP0248302A2 (de) 1987-12-09
IL82742A (en) 1991-05-12
FI872202A7 (fi) 1987-12-04
JPS63100104A (ja) 1988-05-02
CA1325534C (en) 1993-12-28
JP2735830B2 (ja) 1998-04-02

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