EP1125093A1 - Herstellung eines schadstoffarmen mantelgeschosses - Google Patents
Herstellung eines schadstoffarmen mantelgeschossesInfo
- Publication number
- EP1125093A1 EP1125093A1 EP99947175A EP99947175A EP1125093A1 EP 1125093 A1 EP1125093 A1 EP 1125093A1 EP 99947175 A EP99947175 A EP 99947175A EP 99947175 A EP99947175 A EP 99947175A EP 1125093 A1 EP1125093 A1 EP 1125093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- shell
- projectile
- tungsten
- pressed
- 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
Links
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
- F42B12/72—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
Definitions
- the present invention relates to a method for producing a low-pollutant shell projectile according to the preamble of the patent claim and to a projectile produced by this method.
- This method has the disadvantage of cost-intensive thermal process control and is therefore too expensive for ordnance ammunition. Furthermore, the density of the floor can only be set within narrow limits; in addition, the dimensional stability with temperature fluctuations is insufficient due to the high proportion of plastic in the core. It is therefore an object of the invention to provide a method which does not have the disadvantages of the prior art, can be implemented with operating devices which are present everywhere, in particular does not require any thermal processes with corresponding systems and can be adjusted in a simple manner in the resulting density.
- the projectile created by this method should have the same weight, the same outer geometry, the same inside and outside ballistics and the same penetration performance as an existing and previously mass-produced bullet (Ordonnance ammunition 5.6 mm GP90). Furthermore, the dimension of the projectile should also be maintained over a wide temperature range and - of course - all requirements of the Hague Convention must also be met by the substitute product.
- the projectile should be designed to be liquid-tight; Manufacturing tolerances should be compensated for by the construction of the floor.
- the lubricant and lubricant mentioned in the claims proves to be surprisingly inexpensive, since in the weight ratios given it leads to an optimal packing density in the tungsten core even at relatively low pressures and as such does not form a measurable intermediate layer at the contact points of the tungsten grains.
- the projectile according to the invention can be started by a the known gravimetric dosing of the tungsten powder and the lubricant and lubricant are precisely and reproducibly defined in their mass.
- a tungsten powder with the grain size specified in claim 3 can be used to achieve densities which correspond to a lead core.
- Powdered calcium stearate, intimately mixed with tungsten powder has proven to be particularly useful, which creates a one-piece body that holds together when pressed at room temperature; the substances listed alternatively in claim 4 are also suitable.
- the proportion by weight specified in claim 5 is optimal, it prevents the pre-compact from breaking apart when it is removed from the mold and when it is inserted into the shell.
- the final pressing is carried out according to claim 7 with higher pressures, preferably in the range of 400 MPa.
- the pressing pressure when pressing the core material must be above 350 MPa, preferably at 400 MPa.
- a compensating and sealing compound according to claim 9 has the advantage that a liquid-tight rear part arises, and that even small manufacturing tolerances can be compensated.
- Tin has proven itself, claim 10, because it flows easily under pressure and thus results in a completely form-fitting projectile body.
- materials according to claim 11 are used when an absolutely heavy metal-free projectile is required.
- the flow of the material is optimally used, in which a possible excess material can swell out from the inside.
- Figure a small-caliber jacket bullet with a low-pollution core.
- a floor is denoted by 100, which has a jacket 1 and a flattened tip 2. Inside, there is a core 8.
- the jacket 1 is cylindrical in its central part 3 and merges into a truncated cone 5 with sharp edges in its rear part 4.
- a compensating and sealing compound 9 is provided with a concave crowning 6 used for material compensation.
- the jacket 1 is in a known manner (according to EP -A- 0106411) made of plated steel.
- the core 8 consists of a mixture of tungsten powder and calcium stearate; the balancing and sealing compound 9 made of soft tin.
- the projectile 100 is produced in a very simple and economical manner:
- the shell is produced, as is customary in the case of the known ordnance ammunition, by deep-drawing a bowl made of plated steel. After squeezing it to the preliminary length, the core 8 is inserted in the form of a pre-compact and this is pressed to 400 MPa. Then the preformed leveling and sealing compound is inserted and the rear part 4 is shaped and flanged. Finally, the gag groove 7 is embossed and the projectile is calibrated to the finished dimension.
- the pre-compact is produced by intimately mixing 97% by weight of tungsten powder and 3% by weight of calcium stearate and then compression molding at a pressure of 300 MPa. Both components are commercially available, with the Wolf ramp powder having an average grain size of 5 ⁇ m has proven to be very useful for setting a density corresponding to the lead.
- the mass of the core can also be used in large-scale production reproducibly set to an accuracy of plus / minus 4/100 g.
- the mixture of tungsten powder and the powdered lubricant and lubricant can also be poured into the shell of the projectile, precisely metered, and pressed there, with pressures of 400 MPa being used at least in a last pressing.
- the subject of the invention has exactly the same flight dynamic properties as the previous lead-containing ordnance ammunition to be replaced, but does not cause the environmental and health problems resulting from intensive target practice.
- the manufacturing process described can basically be carried out with the previous equipment and the same personnel as the conventional floor manufacturing.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
- Lubricants (AREA)
- Laminated Bodies (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99947175A EP1125093B1 (de) | 1998-10-30 | 1999-10-18 | Herstellung eines schadstoffarmen mantelgeschosses |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98203670A EP0997700A1 (de) | 1998-10-30 | 1998-10-30 | Verfahren zur Herstellung eines schadstoffarmen Mantelgeschosses und danach hergestelltes Geschoss |
EP98203670 | 1998-10-30 | ||
PCT/CH1999/000491 WO2000026605A1 (de) | 1998-10-30 | 1999-10-18 | Herstellung eines schadstoffarmen mantelgeschosses |
EP99947175A EP1125093B1 (de) | 1998-10-30 | 1999-10-18 | Herstellung eines schadstoffarmen mantelgeschosses |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1125093A1 true EP1125093A1 (de) | 2001-08-22 |
EP1125093B1 EP1125093B1 (de) | 2003-05-02 |
Family
ID=8234280
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98203670A Withdrawn EP0997700A1 (de) | 1998-10-30 | 1998-10-30 | Verfahren zur Herstellung eines schadstoffarmen Mantelgeschosses und danach hergestelltes Geschoss |
EP99947175A Expired - Lifetime EP1125093B1 (de) | 1998-10-30 | 1999-10-18 | Herstellung eines schadstoffarmen mantelgeschosses |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98203670A Withdrawn EP0997700A1 (de) | 1998-10-30 | 1998-10-30 | Verfahren zur Herstellung eines schadstoffarmen Mantelgeschosses und danach hergestelltes Geschoss |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP0997700A1 (de) |
AT (1) | ATE239206T1 (de) |
AU (1) | AU6075599A (de) |
DE (1) | DE59905360D1 (de) |
WO (1) | WO2000026605A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1656533B1 (de) * | 2003-08-05 | 2010-12-01 | RUAG Ammotec GmbH | Teilzerlegungsgeschoss mit massivem kern und kern aus gepresstem pulver |
DE102004035371A1 (de) | 2003-08-05 | 2005-03-10 | Ruag Ammotec Gmbh | Teilzerlegungsgeschoss mit Doppelkern |
DE102004035385A1 (de) | 2003-08-05 | 2005-03-03 | Ruag Ammotec Gmbh | Teilzerlegungsgeschoss mit massivem Kern und Kern aus gepresstem Pulver |
RU2356002C2 (ru) * | 2003-08-05 | 2009-05-20 | Руаг Аммотек Гмбх | Частично раздробляющаяся пуля с двойным ядром |
CN103575169B (zh) * | 2013-11-13 | 2015-04-08 | 北京科技大学 | 一种高比重高硬度霰弹枪圆柱形弹丸的制造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292047A (en) * | 1939-03-18 | 1942-08-04 | Remington Arms Co Inc | Ammunition |
US3888636A (en) * | 1971-02-01 | 1975-06-10 | Us Health | High density, high ductility, high strength tungsten-nickel-iron alloy & process of making therefor |
DE3372231D1 (en) | 1982-10-18 | 1987-07-30 | Eidgenoess Munitionsfab Thun | Small arms ammunition, and manufacturing process therefor |
GB8725589D0 (en) * | 1987-10-31 | 1987-12-02 | Saxby M E | Training/marking bullets |
DE3835808A1 (de) * | 1988-10-21 | 1990-04-26 | Rheinmetall Gmbh | Verfahren zur herstellung von hartkerngeschossen |
GB9318437D0 (en) | 1993-09-06 | 1993-10-20 | Gardner John Christopher | High specific gravity material |
CA2199396C (en) * | 1995-06-07 | 2001-04-24 | Lockheed Martin Energy Systems, Inc. | Non-lead, environmentally safe projectiles and explosives containers |
EP0873494A4 (de) * | 1996-01-25 | 2000-12-27 | Remington Arms Co Inc | Bleifreies auseinanderfallendes projektil |
US5789698A (en) * | 1997-01-30 | 1998-08-04 | Cove Corporation | Projectile for ammunition cartridge |
-
1998
- 1998-10-30 EP EP98203670A patent/EP0997700A1/de not_active Withdrawn
-
1999
- 1999-10-18 DE DE59905360T patent/DE59905360D1/de not_active Expired - Lifetime
- 1999-10-18 AT AT99947175T patent/ATE239206T1/de active
- 1999-10-18 WO PCT/CH1999/000491 patent/WO2000026605A1/de active IP Right Grant
- 1999-10-18 AU AU60755/99A patent/AU6075599A/en not_active Abandoned
- 1999-10-18 EP EP99947175A patent/EP1125093B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0026605A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU6075599A (en) | 2000-05-22 |
ATE239206T1 (de) | 2003-05-15 |
EP1125093B1 (de) | 2003-05-02 |
DE59905360D1 (de) | 2003-06-05 |
WO2000026605A1 (de) | 2000-05-11 |
EP0997700A1 (de) | 2000-05-03 |
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