Pyrotechnical fuse

The finely divided metal may ignite in contact with a range of oxidants, usually on heating [1], Mixtures of the metal powder with barium chromate and potassium chlorate are used as a pyrotechnic fuse [2],... 

Feuerwerkszundschnure = pyrotechnical fuses (-1- also quick-match) 271... 

Pyrotechnical fuses are Safety Fuses, which are specially adapted for pyrotechnical purposes by their diameter and their rigidity. They are cut into small (4 6 cm) segments. 

The word match is of uncertain origin. In common parlance, a match is a short, slender, elongated piece of wood or cardboard, suitably impregnated and tipped to permit, through pyrochemical action between dry soHds with a binder, the creation of a small transient flame. The word match also is used for fuse lines which after ignition on one end serve as fire-transfer agents in fireworks and for explosives (qv). Such items belong in the field of pyrotechnics... 

Pyrotechnics have been used for military purposes for many centuries as propellants, explosive charges, time fuses, and for illumination. There are still many uses of pyrotechnic devices in military appHcations, where they provide portability, storage stability, simplicity of operation, safety, and the reUability required for military scenarios. The devices must be capable of surviving rough handling, weather extremes, and extended storage, yet reUably perform when called on to function. 

The principal use of strontium nitrate is in the manufacture of pyrotechnics (qv) as it imparts a characteristic, hrilliant crimson color to a flame. Railroad fusees and distress or rescue signaling devices are the main uses for strontium nitrate. It is also used to make red tracer bullets for the military. 

Concerned mainly with the security of explosives and restncted substances. Applicable to the acquisition, keeping, handling and control of explosives, e.g. blasting explosives, detonators, fuses, ammunitions, propellants, pyrotechnics and fireworks. 

Uses. The main use for Sr nitrate is for producing red colors in pyrotechnics, railroad fusees, marine signals, tracer compositions and in matches (Refs 2, 4 7). A high degree of purity is required, for the contamination of Sr nitrate with... 

Ref 130, p 220) and by Great Britain (Vol 3, C498-R). These rockets utilized BlkPdr as proplnt, fuse (Ref 122) and as an expl. Up to the middle of the last century the history of pyrotechnics is the history of BlkPdr. Even now, as will be discussed in Section 7, large quantities of BlkPdr are used as an igniter. By the late 18 th century a new age in pyrotechnics commenced thru the synthesis of K chlorate (Vol 2, C190-R), the discovery of Fulminates (Vol 6, F216-R) and the identification of the minerals which would impart color to a flame. The discovery of electricity brought about pure chemicals and hence, better flame colors, new oxi-... 

Ignition means Method employed to ignite a deflagration train of explosions of pyrotechnic substances (e.g., a primer for propelling a charge, an igniter for a rocket motor, or an igniting fuse). 

Primers are used for the ignition of propellants and pyrotechnics. They are categorized as percussion primers, used mainly for the ignition of propellants, and stab primers, used in explosive trains of fuses and electric primers. 

Safety fuses are used for the direct ignition of propellants, pyrotechnics, and primary explosives. A safety fuse is composed of a black powder core, three layers of cotton or jute yarn wound around the core, bitumen impregnation, and plastic coating. The burn rate for a safety fuse is usually around 120 + 10 seconds/meter. 

With the possible exception of delay fuses, any pyrotechnic mixture represents a hazard worthy of report. Although the cause of frequent accidents reviewed in [2], compositions intended to explode or deflagrate are generally outside the field of this work and few are listed. Numerous reviews and specialist texts exist and hundreds of patents appear yearly. The account [1] of the theory and practice of pyrotechnics contains much useful information on the performance and potential hazards of a great variety of oxidant-fuel combinations which burn very rapidly or explosively. Safety measures are found in [2], Other reviews written from a functional viewpoint are found in [3] and [4], Some hazardously incompatible pyrotechnic mixes are reported [5], Detonability of pyrotechnic compositions has... 

Y. Du, M. Jiang, Q. Sun and X. Fu, Detonation Properties and Thermal Stabilities of Furazano-Fused Cyclic Nitramines , in Proc. International Symposium on Pyrotechnics and Explosives, China Academic Publishers, Beijing, China, 412 (1987). 

Table 1.2 lists the current applications of black powder. In general, as the balance of the ingredients in the composition shifts from the near stoichiometric 75 15 10 mix, the rate of burning decreases but is still fast enough to be of major importance in hrework rockets, delay fuses, igniters and pyrotechnic smokes. 

FUSE An item with pyrotechnic or explosive components that is intended to be ignited in order to start the firework functioning or to transmit ignition from one part of a firework to another. 

FUSEE An article resembling a safety match but which has additional pyrotechnic composition that glows after ignition and is essentially wind-proof and weather-proof. Used for lighting fuses. 

SHELL A hrework designed to be projected from a mortar tube and containing propellant charge, delay fuse, burster and pyrotechnic units. 

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