US3611766A - Detonation chamber for explosive working of metals - Google Patents

Detonation chamber for explosive working of metals Download PDF

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Publication number
US3611766A
US3611766A US792315*A US79231569A US3611766A US 3611766 A US3611766 A US 3611766A US 79231569 A US79231569 A US 79231569A US 3611766 A US3611766 A US 3611766A
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US
United States
Prior art keywords
hollow body
detonation chamber
explosive
metals
working
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
US792315*A
Other languages
English (en)
Inventor
Winfried Klein
Hans-Friedrich Wilms
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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
Priority claimed from DE1968K0064514 external-priority patent/DE1652627B2/de
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
Application granted granted Critical
Publication of US3611766A publication Critical patent/US3611766A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
    • B23K20/08—Explosive welding
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • F42D5/055—Silencing means for blasting operations

Definitions

  • a detonation chamber for explosive working of metals which includes: a substantially cylindrical hollow body with its longitudinal axis extending substantially vertically, foundation means supporting said hollow body, and cushioned table means arranged in the lower portion of said hollow body for receiving and supporting the means to be explosive worked.
  • the present invention relates to a detonation chamber for explosive working of metals and, more specifically, concerns a detonation chamber of this type which is supported by a foundation and is composed of a suitable material and primarily comprises a cylindrical hollow body which is so arranged that its axis extends substantially vertically.
  • FIG. 1 diagrammatically illustrates a vertical section through a detonation chamber according to the present invention.
  • FIGS. 2 and 3 respectively illustrate vertical sections through modified detonation chambers according to the invention.
  • detonation chambers which in most instances are bell-shaped.
  • granular material especially sand, is whereby a cushioning of the pressure waves caused by the detonation is to be effected.
  • Such detonation chambers are suitable only when relatively small quantities of explosives are employed.
  • a substantially bell-shaped detonation chamber which, however, is used only in connection with such explosive working according to which the interior of the bell-shaped chamber is evacuated.
  • a detonation chamber in the form of a ball-shaped container is, however, very costly and expensive when it is to be used for major technical operations.
  • the bell-shape is not advantageous when carrying out explosive plating and hardening in view of the primarily upwardly directed pressure shock.
  • a substantially cylindrical hollow body is suggested as detonation chamber which body is so arranged that its axis extends substantially vertically.
  • a detonation chamber according to the invention is characterized primarily in that its lower portion contains a cushioned working table for receiving the arrangement for explosive working.
  • the cushioned working table which advantageously is provided with at least one cushioning, layer for instance of rubber or sand, rests on a separate foundation.
  • the cylindrical hollow body may have advantages.
  • the hollow body may have its upper end tapered. It is advantageous, for reducing the load on the walls, to provide inserts or linings in the lower portion of the hollow body.
  • the inserted chains, wires, or the like surprisingly reduce the load acting upon the walls of the cylindrical hollow body over heretofore known inserts to an unexpected extent.
  • a fast renewed readiness of operation after effected firing is obtained by gas withdrawing passages which are arranged at the upper end of the hollow body and communicate with a blower.
  • the effect of these passages can be further improved by providing passages in the lower area of the hollow body and connecting said last mentioned passages with a blower for supplying fresh air. In this way, a fast working sequence and a correspondingly high output can be obtained.
  • the detonation chamber shown in the various figures comprises a cylindrical hollow body 1 having a substantially vertical axis and consisting of prestressed steel concrete.
  • grate-like partitions 2 which consist preferably of strong steel girders or other profiled steel members.
  • anchors 3 which support an impact plate 4 which is movable in vertical direction.
  • springs 5 Between the impact plate 4 and the partition 2 there are provided springs 5.
  • the lower portion of the inner wall of the hollow body 1 is equipped with further anchors 6 for connecting linings 7 or other inserts which serve primarily for absorbing energy.
  • a cushioned working table 8 the upper side of which is covered by a rubber layer 9.
  • the rubber layer 9 has its upper side provided with a recess for receiving a layer 10 of sand on which the work piece 11 or the like is placed which is to be explosion worked.
  • An armored door 12 which can be opened only toward the inside will when under load from the inside rest on the inner wall of the cylindrical hollow body 1.
  • This armored door 12 is adapted to close an opening 13 in the hollow body 1 through which opening the work piece 11 or the like to be explosion worked is introduced by means of a non-illustrated manipulator.
  • the lower edge of the opening 13 and the upper edge of the working table 8 are for this reason arranged at substantially the same level.
  • the bottom of the hollow body 1 simultaneously forms the foundation 14 of the detonation chamber on which the working table 8 rests through the intervention of spring elements 15.
  • the upper end of the hollow body 1 is closed by a cover plate 16 which is anchored to the side wall portion of the hollow body.
  • the cover plate 16 may, if desired, be arched.
  • passages 17 which are located in the hollow body 1 and communicate with a blower 26 for withdrawing gases.
  • passages 18 which either communicate with the outer atmosphere or which represent suction openings or which communicate with the blower 19 for supplying fresh air.
  • the passages 17 and 18 at their connection with the hollow body 1 are, primarily for the protection of the blower, provided with valves 20 which are adapted to be controlled from the outside.
  • the lining 7 of the embodiment of FIG. 1 consists of rubber and is covered by a protective layer of asbestos 21.
  • FIG. 2 illustrates a detonation chamber according to the invention in which the cushioned work table 8 rests on a separate foundation 22.
  • this detonation chamber is with substantially the same dimensions as employed for the embodiment of FIG. 1 suitable for the employment of still larger quantities of explosives because stresses occurring in the foundation during the detonation are to a greater extent eliminated.
  • the upper end 23 of the hollow body 1 tapers in upward direction. With this design, an absorption of the energy is obtained in a simple manner by choking, while partitions may be saved. In the upwardly tapered portion 23 there may be provided a shock absorber (not shown).
  • a filter for filtering the explosive gases may likewise be provided in said tapering portion.
  • the passages 17 shown in FIG. 1 for withdrawing explosive gases may be omitted with the embodiment of FIG. 2.
  • cushioned impact plates are arranged on the anchors 6 which plates 24 are movable radially outwardly and during their movement are adapted to convey the energy absorbed from the detonation gases to springs 25 which partially destroy said energy so that only a minor portion of the energy will be conveyed to the wall of the hollow body 1.
  • the impact plates 24 and the impact plates 4 may additionally be provided with a layer of energy absorbing material.
  • instruments may be installed which permit measurements within the hollow body 1. .Such instruments may be arranged at any desired place and can easily be connected to the respective anchors 6.
  • chains 31 are arranged in the lower portion of the hollow body 1 parallel to the axis of said hollow body. These chains are substantially equally spaced from the inner wall and are provided adjacent to each other while consisting of steel or synthetic material.
  • the chains 31 are connected to hooks 32 which are arranged on the partitions 2 or on brackets 33 connected to the hollow body 1.
  • a tension spring 34 may in a simple manner be interposed between the lower hook 32 and the chain 31.
  • the number of the tension springs 34 may be less than the number of the chains 31. If one of the tension springs 34 should fail by breaking or by fatigue, the tension of the chains 31 in this area will only slightly be affected. Moreover, in this way a preload in the tension springs 34 and in the chains 31 can be effected with only a few tensioning elements 36 connected to the lower ring 35 which tensioning elements are uniformly distributed over the circumference of the ring 35 and rest on brackets 37. In this way, the preload of the springs 34 and chains 31 can easily be effected and controlled.
  • tension springs 34 and/or the rings 35 instead of being arranged at the lower end of the chains 31 may also be arranged at the upper end or any other portion of the chains 31 or may simultaneously be arranged at a plurality of the said areas.
  • the lower end of the door 12 has arranged thereon hooks 38 which instead of hooks 32 hold the chains 31.
  • hooks 38 which instead of hooks 32 hold the chains 31.
  • the chains 31 remain connected to the hooks 32 and are lifted together with the door 12 and are removed from the area of the opening 13.
  • the chains 31 and the springs 34 are at the same time tensioned again.
  • the said rings are recessed in the area of the door 12 or are interrupted in said area.
  • the foundations of the detonation chamber or of the work table 8 are advantageously embedded in a material which is adapted well to absorb ground waves.
  • the detonation chamber according to the present invention can be produced at low costs and assures a good shielding.
  • the detonation chamber according to the present invention also makes it possible to detonate larger quantities of high explosive materials, for instance, quantities of kg. and more, for the explosive working of metals.
  • a closed detonation chamber for explosive working of metals which includes: a substantially cylindrical hollow body with its longitudinal axis extending substantially vertically, foundation means supporting said hollow body, cushioned table means arranged in the lower portion of said hollow body for receiving and supporting the means to be explosive worked, and intermediate gratc-shaped partition means located in the upper collective cross-sectional portion of said substantially cylindrical hollow body.
  • a closed detonation chamber in which said foundation means comprises an annular section supporting said hollow cylindrical body and also includes an inner section surrounded by and in spaced relationship to said annular section and supporting said cushioning table means.
  • a closed detonation chamber in which said cushioned table means is provided with at least one layer of shock absorbing material thereon.
  • a closed detonation chamber which includes cover plate means arranged at the upper end of said substantially cylindrical hollow body for closing said upper end.
  • a closed detonation chamber according to claim 1 in which the upper end of said substantially cylindrical hollow body tapers more in upward direction of wave widening.
  • a closed detonation chamber for explosive working of metals which includes a substantially cylindrical hollow body with its longitudinal axis extending substantially vertically, foundation means supporting said hollow body, cushioned table means arranged in the lower portion of said hollow body for receiving and supporting the means to be explosive Worked, anchor means arranged in the lower portion of said hollow body and energy consuming insert means supported by said anchor means, and impact plate means arranged in the region containing said anchor means and at least partially connected to said substantially cylindrical hollow body.
  • a closed detonation chamber according to claim 6 16 which includes cushioning means associated with said impact means for cushioning the same.
  • a detonation chamber for explosive working of metals which includes: a substantially cylindrical hollow body with its longitudinal axis extending substantially vertically, foundation means supporting said hollow body, cushioned table means arranged in the lower portion of said hollow body for receiving and supporting the means to be explosive worked, grate-shaped partition means located in the upper portion of said substantially cylindrical hollow body, and cushioning impact plate means arranged below and connected to said partition means.
  • a closed detonation chamber which includes suspended means extending substantially parallel to the axis of said substantially hollow cylindrical body and arranged in the lower portion thereof while being substantially equally spaced from the inner wall of said substantially cylindrical hollow body.
  • a closed detonation chamber according to claim 19, which includes elastic means connected to at least one end of said suspended means.
  • a closed detonation chamber in which said substantially cylindrical hollow body approximately at the area of said table means is provided with an opening, and which includes armored door means for selectively opening and closing said opening.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
US792315*A 1968-01-20 1969-01-21 Detonation chamber for explosive working of metals Expired - Lifetime US3611766A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1968K0064514 DE1652627B2 (de) 1968-01-20 1968-01-20 Detonationskammer zur durchfuehrung von explosionsplattierungen und -haertungen von metallen
DE19681777168 DE1777168A1 (de) 1968-01-20 1968-09-14 Detonationskammer zur Explosionsbearbeitung von Metallen

Publications (1)

Publication Number Publication Date
US3611766A true US3611766A (en) 1971-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US792315*A Expired - Lifetime US3611766A (en) 1968-01-20 1969-01-21 Detonation chamber for explosive working of metals

Country Status (5)

Country Link
US (1) US3611766A (fi)
BE (1) BE727027A (fi)
DE (1) DE1777168A1 (fi)
FR (1) FR2000495A1 (fi)
NL (1) NL6900528A (fi)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910084A (en) * 1974-03-21 1975-10-07 Paton Boris E Apparatus for explosive working of metals
US4020663A (en) * 1975-06-16 1977-05-03 Alexei Alexeevich Gubsky Plant for explosive forming
US4079612A (en) * 1976-09-28 1978-03-21 Polikarp Polikarpovich Smirnov Arrangement for explosion treatment of materials
EP0395261A1 (en) * 1989-04-28 1990-10-31 The Marconi Company Limited Explosive-screening apparatus and method
WO1992021918A1 (de) * 1991-05-29 1992-12-10 Heinrich Hampel Verfahren zum umweltschonenden betrieb einer sprengvorrichtung sowie zur durchführung dieses verfahrens geeignete sprengvorrichtung
WO1996000880A1 (de) * 1994-06-29 1996-01-11 Hampel, Christoph Vorrichtung zum entsorgen von spreng- und/oder brenngut
US5613453A (en) * 1995-12-29 1997-03-25 Donovan; John L. Method and apparatus for containing and suppressing explosive detonations
WO1997045697A1 (en) * 1996-05-31 1997-12-04 Hydrodyne Incorporated Water deflector for water-gas plumes from underwater explosions
WO1998046943A1 (en) 1997-03-24 1998-10-22 Donovan John L Method and apparatus for containing and suppressing explosive detonations
WO2000037880A2 (en) 1998-11-12 2000-06-29 Donovan John L Method and apparatus for containing and suppressing explosive detonations
US6354181B1 (en) 1995-12-29 2002-03-12 John L. Donovan Method and apparatus for the destruction of suspected terrorist weapons by detonation in a contained environment
US20030163265A1 (en) * 2002-01-31 2003-08-28 Loewe Thomas D. DSP assisted peak capture circuit and method
US6669546B2 (en) * 2000-12-08 2003-12-30 Hydrodyne, Inc. Shock-wave meat treatment
US20040097180A1 (en) * 2002-11-18 2004-05-20 Hydrodyne Incorporated Shock wave treatment of meat
US20050192472A1 (en) * 2003-05-06 2005-09-01 Ch2M Hill, Inc. System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinance
US20060115560A1 (en) * 2004-11-19 2006-06-01 Hyrdodyne Incorporated Treatment of meat
US10344973B1 (en) * 2017-11-17 2019-07-09 The United States Of America As Represented By The Secretary Of The Navy Apparatus for incinerating explosive devices and biological agents

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE431837B (sv) * 1983-04-14 1984-03-05 Sp K Byuro Gidroimpuls Tekh Anleggning for bearbetning av material genom sprengning

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910084A (en) * 1974-03-21 1975-10-07 Paton Boris E Apparatus for explosive working of metals
US4020663A (en) * 1975-06-16 1977-05-03 Alexei Alexeevich Gubsky Plant for explosive forming
US4079612A (en) * 1976-09-28 1978-03-21 Polikarp Polikarpovich Smirnov Arrangement for explosion treatment of materials
EP0395261A1 (en) * 1989-04-28 1990-10-31 The Marconi Company Limited Explosive-screening apparatus and method
WO1992021918A1 (de) * 1991-05-29 1992-12-10 Heinrich Hampel Verfahren zum umweltschonenden betrieb einer sprengvorrichtung sowie zur durchführung dieses verfahrens geeignete sprengvorrichtung
US5419862A (en) * 1991-05-29 1995-05-30 Hampel; Heinrich Process for the low-pollution operation of an explosion device and suitable explosion device for implementing this process
WO1996000880A1 (de) * 1994-06-29 1996-01-11 Hampel, Christoph Vorrichtung zum entsorgen von spreng- und/oder brenngut
US5613453A (en) * 1995-12-29 1997-03-25 Donovan; John L. Method and apparatus for containing and suppressing explosive detonations
WO1997024558A1 (en) 1995-12-29 1997-07-10 Donovan John L Method and apparatus for containing and suppressing explosive detonations
US6354181B1 (en) 1995-12-29 2002-03-12 John L. Donovan Method and apparatus for the destruction of suspected terrorist weapons by detonation in a contained environment
USRE36912E (en) * 1995-12-29 2000-10-17 Abc-Naco Inc. Method and apparatus for containing and suppressing explosive detonations
US6173662B1 (en) 1995-12-29 2001-01-16 John L. Donovan Method and apparatus for containing and suppressing explosive detonations
WO1997045697A1 (en) * 1996-05-31 1997-12-04 Hydrodyne Incorporated Water deflector for water-gas plumes from underwater explosions
US5841056A (en) * 1996-05-31 1998-11-24 Hydrodyne Incorporated Water deflector for water-gas plumes from underwater explosions
WO1998046943A1 (en) 1997-03-24 1998-10-22 Donovan John L Method and apparatus for containing and suppressing explosive detonations
WO2000037880A2 (en) 1998-11-12 2000-06-29 Donovan John L Method and apparatus for containing and suppressing explosive detonations
US6669546B2 (en) * 2000-12-08 2003-12-30 Hydrodyne, Inc. Shock-wave meat treatment
US20030163265A1 (en) * 2002-01-31 2003-08-28 Loewe Thomas D. DSP assisted peak capture circuit and method
US20040097180A1 (en) * 2002-11-18 2004-05-20 Hydrodyne Incorporated Shock wave treatment of meat
US7244459B2 (en) 2002-11-18 2007-07-17 Hydrodyne Incorporated Shock wave treatment of meat
US20050192472A1 (en) * 2003-05-06 2005-09-01 Ch2M Hill, Inc. System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinance
US20080089813A1 (en) * 2003-05-06 2008-04-17 Quimby Jay M System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinance
US7700047B2 (en) 2003-05-06 2010-04-20 Ch2M Hill Constructors, Inc. System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinance
US20060115560A1 (en) * 2004-11-19 2006-06-01 Hyrdodyne Incorporated Treatment of meat
US10344973B1 (en) * 2017-11-17 2019-07-09 The United States Of America As Represented By The Secretary Of The Navy Apparatus for incinerating explosive devices and biological agents

Also Published As

Publication number Publication date
DE1777168A1 (de) 1971-10-14
NL6900528A (fi) 1969-07-22
FR2000495A1 (fi) 1969-09-05
BE727027A (fi) 1969-07-01

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