CH645976A5 - COATING FOR SHAPED EXPLOSIVE CHARGE. - Google Patents

COATING FOR SHAPED EXPLOSIVE CHARGE. Download PDF

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Publication number
CH645976A5
CH645976A5 CH495381A CH495381A CH645976A5 CH 645976 A5 CH645976 A5 CH 645976A5 CH 495381 A CH495381 A CH 495381A CH 495381 A CH495381 A CH 495381A CH 645976 A5 CH645976 A5 CH 645976A5
Authority
CH
Switzerland
Prior art keywords
copper
noble metal
coating
shaped
explosive
Prior art date
Application number
CH495381A
Other languages
French (fr)
Inventor
Michel Precoul
Original Assignee
Serat
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 Serat filed Critical Serat
Publication of CH645976A5 publication Critical patent/CH645976A5/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02Shaped or hollow charges
    • F42B1/032Shaped or hollow charges characterised by the material of the liner

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Powder Metallurgy (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Forging (AREA)

Description

645 976 645,976

2 2

Claims (4)

REVENDICATIONS 1. Revêtement à base de cuivre pour charge explosive formée, caractérisé en ce qu'il est constitué d'un alliage à base de cuivre avec addition d'un métal noble.1. Copper-based coating for shaped explosive charge, characterized in that it consists of a copper-based alloy with the addition of a noble metal. 2. Revêtement selon la revendication 1, caractérisé en ce que le métal noble est l'argent.2. Coating according to claim 1, characterized in that the noble metal is silver. 3. Revêtement selon la revendication 1, caractérisé en ce que le métal noble est le platine.3. Coating according to claim 1, characterized in that the noble metal is platinum. 4. Charge explosive formée, comportant un revêtement selon l'une des revendications 1 à 3.4. Shaped explosive charge, comprising a coating according to one of claims 1 to 3. Pour la constitution des revêtements pour charges explosives formées (charges creuses, charges creuses à assiette déformable lançant un noyau), on utilise généralement des matériaux denses, ductiles, malléables, supportant sans rupture des déformations très rapides sous l'effet des ultrapressions engendrées par la détonation.For the constitution of coatings for shaped explosive charges (shaped charges, shaped charges with deformable plate launching a nucleus), one generally uses dense, ductile, malleable materials, supporting without rupture very rapid deformations under the effect of the ultrapressures generated by the detonation. Ainsi, le tantale prend une place grandissante dans la technique des assiettes déformables, alors que le cuivre conserve toujours, par ses qualités propres, sa place prépondérante dans la technique des charges creuses.Thus, tantalum takes a growing place in the technique of deformable plates, while copper still retains, by its own qualities, its preponderant place in the technique of shaped charges. Cependant, même dans le cas du cuivre, et dès l'origine des charges creuses modernes très performantes (4 ou 5 calibres, première et deuxième générations, double décennie des années cinquante et soixante), on s'est rapidement orienté vers le cuivre de très haute pureté (à 99,99%), de plus désoxygéné, ce qui lui permet de supporter, sans fissuration ni crique, les déformations inhérentes au phénomène ultrarapide du fonctionnement, qualité d'ailleurs vérifiée, lot par lot, par des épreuves très particulières de pliage.However, even in the case of copper, and from the very beginning of modern high-performance shaped charges (4 or 5 calibers, first and second generations, double decade of the fifties and sixties), we quickly turned to copper of very high purity (99.99%), more deoxygenated, which allows it to withstand, without cracking or cracking, the deformations inherent in the ultra-fast phenomenon of operation, quality moreover verified, batch by batch, by very special bending. La présente invention propose une amélioration du cuivre pour revêtement de charges explosives formées, ayant pour objet d'en 5 augmenter à la fois la densité et la capacité de déformation sans rupture, fissure, crique, etc. On obtient ainsi une augmentation de la longueur du jet, un relèvement de sa masse spécifique et de sa continuité, d'où amélioration directe du pouvoir perforant et de l'effet terminal.The present invention provides an improvement in copper for coating shaped explosive charges, having the object of increasing both the density and the ability to deform without breaking, cracking, cracking, etc. One thus obtains an increase in the length of the jet, an increase in its specific mass and its continuity, hence a direct improvement in the perforating power and in the terminal effect. io Dans le revêtement selon l'invention, le cuivre comporte une addition d'un métal noble tel qu'argent, or, platine. Les capacités de déformation de ces métaux nobles et leur densité donnent à l'alliage ainsi formé les caractéristiques précisément recherchées, comme rappelé plus haut, pour relever le pouvoir perforant de l'effet terminal 15 d'une charge explosive formée.io In the coating according to the invention, the copper comprises an addition of a noble metal such as silver, gold, platinum. The deformation capacities of these noble metals and their density give the alloy thus formed the precisely desired characteristics, as mentioned above, to raise the perforating power of the terminal effect of an explosive charge formed. La teneur de l'addition en métal noble peut d'ailleurs être modérée: sans sortir du cadre de l'invention, elle peut être de quelques pour-cent seulement.The content of the addition of noble metal can moreover be moderate: without departing from the scope of the invention, it can be only a few percent. Des revêtements en métal noble ont d'ailleurs été déjà réalisés 20 dans le passé. Mais le prix de ces métaux ne permet pas d'y avoir recours pour les produits de série, même s'il s'agit de missiles tactiques. Par contre, l'alliage à base de cuivre, avec addition d'argent ou d'or ou de platine, tout en restant d'un prix raisonnable, procure tous les avantages et les progrès évoqués plus haut.Noble metal coatings have, moreover, already been produced in the past. But the price of these metals does not allow them to be used for mass-produced products, even in the case of tactical missiles. On the other hand, the copper-based alloy, with the addition of silver or gold or platinum, while remaining reasonably priced, provides all the advantages and advances mentioned above. 25 S'y ajoute la possibilité d'adapter, par les procédés métallurgiques et mécaniques classiques (traitement thermique, corroyage, fluotournage, emboutissage, etc.), les caractéristiques de l'alliage: granulométrie, dureté, allongement, striction, limite élastique, etc., au cas précis d'emploi: revêtement de charge creuse ou assiette dê-30 formable, calibre, épaisseur, forme, chargement en explosif, nature de l'explosif, forme d'onde de détonation, etc.25 Added to this is the possibility of adapting, by conventional metallurgical and mechanical processes (heat treatment, working, flow forming, stamping, etc.), the characteristics of the alloy: grain size, hardness, elongation, necking, elastic limit, etc., in the specific case of use: hollow charge coating or deformable plate, caliber, thickness, shape, explosive loading, nature of the explosive, detonation waveform, etc.
CH495381A 1980-08-01 1981-07-30 COATING FOR SHAPED EXPLOSIVE CHARGE. CH645976A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8017029A FR2487966B1 (en) 1980-08-01 1980-08-01 IMPROVEMENTS ON COATINGS FOR FORMED EXPLOSIVE CHARGES

Publications (1)

Publication Number Publication Date
CH645976A5 true CH645976A5 (en) 1984-10-31

Family

ID=9244800

Family Applications (1)

Application Number Title Priority Date Filing Date
CH495381A CH645976A5 (en) 1980-08-01 1981-07-30 COATING FOR SHAPED EXPLOSIVE CHARGE.

Country Status (6)

Country Link
BE (1) BE889823A (en)
CH (1) CH645976A5 (en)
DE (1) DE3129530A1 (en)
FR (1) FR2487966B1 (en)
GB (1) GB2081428B (en)
IT (1) IT1144438B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498367A (en) * 1982-09-30 1985-02-12 Southwest Energy Group, Ltd. Energy transfer through a multi-layer liner for shaped charges
DE3525613A1 (en) * 1985-07-18 1987-01-22 Rheinmetall Gmbh INSERT FOR PUTTING A BLAST CHARGE AND FORMING A ROD-SHAPED PROJECTILE AND METHOD FOR PRODUCING THE INSERT
FR2599648B1 (en) * 1986-06-10 1995-06-30 Saint Louis Inst PROCESS FOR THE MANUFACTURE OF A HOLLOW LOAD COATING

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1086048A (en) * 1953-07-02 1955-02-09 Soc Tech De Rech Ind Improvements to coatings for crense loads
US3112700A (en) * 1959-12-11 1963-12-03 Jr John W Gehring Eutectic alloy shaped charge liner
FR1531530A (en) * 1967-05-22 1968-07-05 Alsetex Soc Alsacienne D Etude Advanced training in shaped charges
FR1327804A (en) * 1962-04-09 1963-05-24 Soc Tech De Rech Ind Improvements to coatings for shaped charges
FR2268242B1 (en) * 1974-04-17 1978-07-21 Poudres & Explosifs Ste Nale
FR2429990B1 (en) * 1978-06-27 1985-11-15 Saint Louis Inst EXPLOSIVE FLAT CHARGE

Also Published As

Publication number Publication date
FR2487966B1 (en) 1986-07-11
IT1144438B (en) 1986-10-29
GB2081428A (en) 1982-02-17
BE889823A (en) 1981-11-16
DE3129530C2 (en) 1989-12-21
IT8168042A0 (en) 1981-07-27
GB2081428B (en) 1984-01-18
DE3129530A1 (en) 1982-06-03
FR2487966A1 (en) 1982-02-05

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