GB1272743A - Process for generating a defined detonation front from explosives by means of an electric conductor - Google Patents

Process for generating a defined detonation front from explosives by means of an electric conductor

Info

Publication number
GB1272743A
GB1272743A GB372265A GB372265A GB1272743A GB 1272743 A GB1272743 A GB 1272743A GB 372265 A GB372265 A GB 372265A GB 372265 A GB372265 A GB 372265A GB 1272743 A GB1272743 A GB 1272743A
Authority
GB
United Kingdom
Prior art keywords
explosive
wire
section
diameter
detonation
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
Application number
GB372265A
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel 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
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB1272743A publication Critical patent/GB1272743A/en
Expired 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
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

1,272,743. Detonating explosive charges. DYNAMIT NOBEL A.G. 28 Jan., 1965 [3 Feb., 1964], No. 3722/65. Heading F3A. In a process for generating a predetermined and defined detonation front in an explosive by means of an electric conductor, the latter is formed with alternate portions of large and small cross-section and, for initiating the detonation, is charged with an electric current of such a strength as to only cause vaporization of the regions of small cross-section. By way of example, when a manganin wire of 0À15 mm. diameter arranged coaxially of a cylindrical explosive column of 40 mm. diameter and a length of 400 mm. is loaded with a current impulse of 550 watt-seconds and a potential of 10 kilovolts, the detonation reaches the surface of the explosive cylinder at various points with time differences of up to 30 seconds, but when a wire consisting of alternately succeeding manganin wire sections of 0À15 mm. diameter and a length of 20 mm. and copper wire sections of 1À4 mm. diameter and a length of 2À5 mm. is used, the same high voltage discharge results in time differences of only 0À5 to 2À0 seconds. In a further example, detonating caps are embedded in the explosive, being open towards a wire placed adjacent to and spaced from the open ends of the caps. The wire is formed with alternate portions of small cross-section and large cross-section.
GB372265A 1964-02-04 1965-01-28 Process for generating a defined detonation front from explosives by means of an electric conductor Expired GB1272743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964D0043523 DE1446950C1 (en) 1964-02-04 1964-02-04 Electrical ignition system

Publications (1)

Publication Number Publication Date
GB1272743A true GB1272743A (en) 1972-05-03

Family

ID=7047651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB372265A Expired GB1272743A (en) 1964-02-04 1965-01-28 Process for generating a defined detonation front from explosives by means of an electric conductor

Country Status (4)

Country Link
DE (1) DE1446950C1 (en)
FR (1) FR1605057A (en)
GB (1) GB1272743A (en)
NL (1) NL6501354A (en)

Also Published As

Publication number Publication date
FR1605057A (en) 1973-01-12
DE1446950C1 (en) 1971-12-30
NL6501354A (en) 1972-03-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees