AT273768B

AT273768B - Primer for electric triggerable detonators

Info

Publication number: AT273768B
Application number: AT113467A
Authority: AT
Original assignee: Schaffler & Co
Priority date: 1967-02-06
Filing date: 1967-02-06
Publication date: 1969-08-25

Description

  

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  Zündpille für elektrisch auslösbare Sprengzünder 
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 einem Bindemittel, wie Zaponlack, vermengt und zu einer Masse mit für das Tauchverfahren geeigneter Konsistenz angemacht sind. Der Anteil an Metallpulver, der unter anderem eine Herabsetzung des Zündmassenwiderstandes auf etwa die Hälfte oder weniger als die Hälfte des Widerstandes der bekannten   Flammsätze   bewirkt, liegt zwischen 30 und   4Cf1/0.   Als Pulvermetall hat sich Zirkonium besonders bewährt.



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  Primer for electrically triggerable detonators
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 a binding agent such as zapon lacquer and mixed into a mass with a consistency suitable for the immersion process The proportion of metal powder, which among other things brings about a reduction in the ignition mass resistance to about half or less than half the resistance of the known flame assemblies, is between 30 and 4Cf1 / 0. Zirconium has proven particularly useful as a powder metal.

Claims

PATENT CLAIM: Detonator for electrically triggerable detonators, with a bridge wire and a surrounding, uniformly designed detonating compound, characterized in that the metal content of the detonating compound, which is composed of a binder, an oxygen carrier and a metal powder, is dimensioned so that an ignition temperature of about 400 to 500 C is achieved Ignition pulses of 2 m Ws / ohms to 4 Ws / ohms and preferably 1 to 3 msec duration is achieved, and that at the same time the resistance is reduced to about half, preferably less than half of the resistance of the usual flame composition.