EP0014400A2 - Revêtement en plusieurs parties pour charges creuses linéaires en forme de toit - Google Patents

Revêtement en plusieurs parties pour charges creuses linéaires en forme de toit Download PDF

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Publication number
EP0014400A2
EP0014400A2 EP80100409A EP80100409A EP0014400A2 EP 0014400 A2 EP0014400 A2 EP 0014400A2 EP 80100409 A EP80100409 A EP 80100409A EP 80100409 A EP80100409 A EP 80100409A EP 0014400 A2 EP0014400 A2 EP 0014400A2
Authority
EP
European Patent Office
Prior art keywords
inserts
cutting
insert
shaped
roof
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
EP80100409A
Other languages
German (de)
English (en)
Other versions
EP0014400B1 (fr
EP0014400A3 (en
Inventor
Wilhelm Grosse-Benne
Paul Beermann
Adolf Weber
Paul Sindermann
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0014400A2 publication Critical patent/EP0014400A2/fr
Publication of EP0014400A3 publication Critical patent/EP0014400A3/de
Application granted granted Critical
Publication of EP0014400B1 publication Critical patent/EP0014400B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/007—Explosive cutting or perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/04—Severing by squeezing

Definitions

  • the invention relates to inserts for cutting loads according to the preamble of claim 1.
  • Cutting charges are used, for example, to cut through iron plates, cables, bridge girders.
  • Cutting charges are symmetrical shaped charges.
  • the cutting charges are equipped with a cavity, which unfold their preferential effect in the plane of symmetry.
  • Cutting loads with a roof-shaped or semicircular insert are mainly used for military use.
  • Cutting charges are lined shaped charges, the lining consisting of an insert made of inert material or of metal, preferably copper.
  • the lining serves as an energy transmitter, since it concentrates the energy of the explosive charge over a relatively small cross section on the explosive object over a relatively long time.
  • the detonation of the explosive charge deforms the lining, that is to say the insert, in such a way that the lining material flows together in the plane of symmetry and, from the collapse point (respective meeting point of the lining elements), the spike of high kinetic energy and the bolts of low kinetic energy forms.
  • the sting is responsible for the effect in the explosive device.
  • Essential influence variables of the cutting charge with insert are detonation velocity and density of 'explosives, detonation wave form, and the liner shape and configuration of the wall thickness of the liner and the surface characteristics of the liner.
  • the detonation pressure in the wavefront is equal to the product of density, detonation speed and swath speed, or the swath speed increases with the detonation speed approximately proportional to the square of the detonation speed.
  • explosives of a cutting charge chemical energy is converted into kinetic energy, using so-called explosive explosives such as trinitroloul, hexogen, octogen, etc.
  • explosives are mixed with metal powder; the breakdown of such explosives takes place in microseconds.
  • the lining made of either sintered or copper material in one piece.
  • Electrolytic copper with a high level of purity is used for the copper inserts.
  • the inserts consist of copper sheets, which are produced in the rolling process and are subsequently shaped into roof-shaped or semicircular inserts in the bending or pressing process, as required.
  • the cutting dimensions such as depth and width have no connection with the composition of the target material.
  • the depth of cut essentially depends only on the insert and the load strength.
  • the embossed or otherwise shaped roof or semi-circular cutting loads must be manufactured with the greatest care and high accuracy. Cracks and notches affect the cutting effect.
  • tests have shown that the apex of the insert remains partly in the cut as a solid copper component after the explosion. For this reason, it can be said with a probability bordering on certainty that the apex of the insert, based on a length of approximately 1-2 cm, acts as a disruptive element in the detonation.
  • the metal insert When the cutting charge detonates, the metal insert is turned inside out like a hat lining and shoots against the target object at the detonation speed as the reference speed of the system, increased by the flow speed of the spike.
  • the part of the metal insert belonging to the swath side flows in the opposite direction after the collision in the plane of symmetry and runs, i. H. seen from the overall system under consideration, with the speed behind the spike reduced by the flow speed.
  • the cut channel is ultimately blocked by the spike.
  • the aim of the invention is to create a precise, precise insert in order to improve the cutting performance in cutting loads and to simplify production and for inexpensive manufacture, in which no residues of the insert are present in the cut after blasting and where in the end the deposits are accurate and economical are cheap to produce. Furthermore, these metal inserts must also be able to be installed quickly and precisely in the cutting charge housing.
  • the advantages achieved by the invention are, in particular, that the cutting performance is increased significantly, no remaining components of the insert remain in the cut after the detonation, the insert can be manufactured precisely and precisely, is inexpensive to manufacture and can be easily and conveniently installed in the cutting charge housing can.
  • an explosive insert 1 is provided with a recess 2, on the surfaces 3, 4 of which plate-shaped inserts 5, 6 are glued.
  • the inserts 5, 6 consist of electrolytic copper. On the gable side, they lie against one another with the surfaces 7, 8.
  • the inserts 10-17 according to FIGS. 3-5 and 8 have other insert shapes with different material thicknesses.
  • a butt joint 26 closed in the cutting direction 25 lies between the inserts 20 ⁇ 23.
  • a cut 30 according to FIG. 9 which can be achieved by means of the inserts with an explosive insert and a housing with an ignition device not described here shows the increase in performance compared to a cut 31 which can be achieved by the prior art in a target block 32 according to FIG. 10.
  • the principle of the invention consists, in summary, of using, for the first time, instead of a previously one-piece insert, divided inserts to be designed in any form, where a high degree of effectiveness is achieved in the depth of cut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP80100409A 1979-02-03 1980-01-28 Revêtement en plusieurs parties pour charges creuses linéaires en forme de toit Expired EP0014400B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2904155 1979-02-03
DE2904155A DE2904155C2 (de) 1979-02-03 1979-02-03 Einlagen für Schneidladungen

Publications (3)

Publication Number Publication Date
EP0014400A2 true EP0014400A2 (fr) 1980-08-20
EP0014400A3 EP0014400A3 (en) 1980-09-03
EP0014400B1 EP0014400B1 (fr) 1983-05-18

Family

ID=6062117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100409A Expired EP0014400B1 (fr) 1979-02-03 1980-01-28 Revêtement en plusieurs parties pour charges creuses linéaires en forme de toit

Country Status (3)

Country Link
US (1) US4327642A (fr)
EP (1) EP0014400B1 (fr)
DE (1) DE2904155C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727510A1 (fr) * 1985-08-16 1996-05-31 Rheinmetall Gmbh Revetement pour tete de combat
FR2897553A1 (fr) * 2006-02-20 2007-08-24 Commissariat Energie Atomique Sectionneur pyrotechnique a charge creuse annulaire pour pieces de section circulaire

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176878B (en) * 1979-08-14 1987-09-03 Royal Ordnance Plc Hollow charges
FI66988C (fi) * 1981-10-28 1984-12-10 Sica Ab Oy Haolpatron med riktad spraengverkan och foerfarande foer framstaellning av en metallisk kon foer haolpatron
US4498367A (en) * 1982-09-30 1985-02-12 Southwest Energy Group, Ltd. Energy transfer through a multi-layer liner for shaped charges
JPS6053800A (ja) * 1983-09-02 1985-03-27 三菱重工業株式会社 岩盤破砕方法
US4649825A (en) * 1984-06-25 1987-03-17 The United States Of America As Represented By The Secretary Of The Navy Explosive separation system for composite materials
DE3739683C2 (de) * 1987-11-24 1999-05-12 Mueller Christfried A A H Schneidladung
US5175391A (en) * 1989-04-06 1992-12-29 The United States Of America As Represented By The Secretary Of The Army Method for the multimaterial construction of shaped-charge liners
US6183569B1 (en) 1999-03-15 2001-02-06 Spectre Enterprises, Inc. Cutting torch and associated methods
US6446558B1 (en) * 2001-02-27 2002-09-10 Liquidmetal Technologies, Inc. Shaped-charge projectile having an amorphous-matrix composite shaped-charge liner
GB0604408D0 (en) * 2006-03-04 2006-07-12 Alford Res Ltd An explosive charge
US8166882B2 (en) * 2009-06-23 2012-05-01 Schlumberger Technology Corporation Shaped charge liner with varying thickness
RU2707000C1 (ru) * 2018-11-28 2019-11-21 Общество с ограниченной ответственностью "Технощит" Облицовка для снарядоформирующего устройства

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758543A (en) * 1950-04-10 1956-08-14 Clarence W Grandin Cutting method and apparatus
DE1106646B (de) * 1958-02-27 1961-05-10 Rheinmetall Gmbh Hohlladung
FR1327804A (fr) * 1962-04-09 1963-05-24 Soc Tech De Rech Ind Perfectionnements aux revêtements pour charges creuses
CH397468A (de) * 1960-02-23 1965-08-15 Bofors Ab Hohlladung
DE1946959A1 (de) * 1969-09-17 1971-03-25 Rheinmetall Gmbh Hohlladung mit Einlage progressiver oder degressiver Wandstaerke
FR2315076A1 (fr) * 1975-06-20 1977-01-14 Gulf Oil Corp Cartouche explosive pour operations de sautage
DE2724036A1 (de) * 1977-05-27 1978-12-07 Diehl Fa Schneidladung zum durchtrennen von platten- oder stabfoermigen gegenstaenden

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977835C (de) * 1964-09-09 Messerschmitt Boelkow Blohm Hohlladung zur Erzeugung schnittartiger Wirkungen
DE1571283A1 (de) * 1966-12-05 1969-05-29 Bundesrepublik Deutschland D D Zylindrische Hohlladung
US3712221A (en) * 1971-01-18 1973-01-23 Us Army Blast shield for explosive devices including linear shaped charges
US3750582A (en) * 1971-09-03 1973-08-07 Us Army Projectile with differential tandem shaped charges
US3976010A (en) * 1973-04-16 1976-08-24 Whittaker Corporation Spin compensated liner for shaped charge ammunition and method of making same
US3948181A (en) * 1973-05-14 1976-04-06 Chamberlain Manufacturing Corporation Shaped charge
FR2365774A1 (fr) * 1976-09-27 1978-04-21 Serat Perfectionnements aux chargements des projectiles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758543A (en) * 1950-04-10 1956-08-14 Clarence W Grandin Cutting method and apparatus
DE1106646B (de) * 1958-02-27 1961-05-10 Rheinmetall Gmbh Hohlladung
CH397468A (de) * 1960-02-23 1965-08-15 Bofors Ab Hohlladung
FR1327804A (fr) * 1962-04-09 1963-05-24 Soc Tech De Rech Ind Perfectionnements aux revêtements pour charges creuses
DE1946959A1 (de) * 1969-09-17 1971-03-25 Rheinmetall Gmbh Hohlladung mit Einlage progressiver oder degressiver Wandstaerke
FR2315076A1 (fr) * 1975-06-20 1977-01-14 Gulf Oil Corp Cartouche explosive pour operations de sautage
DE2724036A1 (de) * 1977-05-27 1978-12-07 Diehl Fa Schneidladung zum durchtrennen von platten- oder stabfoermigen gegenstaenden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Criteria for jet formation from impinging shells and plates", July 1976, Journal of Applied Physics, Vol. 47, No. 7, pages 2975-2981 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727510A1 (fr) * 1985-08-16 1996-05-31 Rheinmetall Gmbh Revetement pour tete de combat
FR2897553A1 (fr) * 2006-02-20 2007-08-24 Commissariat Energie Atomique Sectionneur pyrotechnique a charge creuse annulaire pour pieces de section circulaire
WO2007096335A1 (fr) * 2006-02-20 2007-08-30 Commissariat A L'energie Atomique Sectionneur pyrotechnique a charge creuse annulaire pour pieces de section circulaire

Also Published As

Publication number Publication date
EP0014400B1 (fr) 1983-05-18
EP0014400A3 (en) 1980-09-03
US4327642A (en) 1982-05-04
DE2904155C2 (de) 1982-01-21
DE2904155A1 (de) 1980-08-07

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