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R. Meyer J. Köhler A. Homburg Explosives

R. Meyer J. Köhler A. Homburg Explosives

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Pre-splitting (Pre-shearing)<br />

Pre-splitting (Pre-shearing)<br />

Vorspalten; tendage préliminaire<br />

A W Contour Blasting method in which cracks for the final contour are<br />

created by firing a single row of holes prior to the blasting of the rest of<br />

the holes for the blast pattern.<br />

Pressing of Rocket Propellant Charges<br />

Pressen von Treibsätzen; moulage des propellants de<br />

roquette par pression<br />

Rocket compositions of both double base and composite type are<br />

shaped into the desired form (e.g., star-shaped configurations) on<br />

extrusion or screw-type presses through a die or by casting and<br />

curing.<br />

Press Molding of <strong>Explosives</strong><br />

Pressen von Sprengstoffen; moinlage d’explosifs pa pression<br />

The purpose of compression by hydraulic presses is similar to that of<br />

casting, i.e. to attain a high loading density (W Brisance) while at the<br />

same time imparting the desired shape to the charge.<br />

Certain explosives (TNT, Tetryl, etc.) can be compacted by compression<br />

in the absence of any additives; sensitive explosives such as<br />

PETN (Nitropenta), RDX (Hexogen), or HMX (Octogen) have to be<br />

phlegmatized by the incorporation of wax. The wax reduces the impact<br />

sensitivity and, at the same time, acts as a binder.<br />

Plastic binder materials: W LX and W PBX.<br />

Pressure Cartridge<br />

Druckgas-Patrone; cartouche génératrice de gaz<br />

Pyrotechnic device in which propellant combination is used to produce<br />

pressurized gas for short duration.<br />

Prills<br />

264<br />

denote the ammonium nitrate pellets obtained by cooling free falling<br />

droplets of the molten salt in so called prill towers. By special processing,<br />

they can be porous and are capable of absorbing a certain<br />

percentage of liquid hydrocarbons (W ANFO). The ready made ANFOexplosive<br />

is also marketed under the name “Prills”.

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