EP3218331A1 - Pyrotechnisches verzögerungselement - Google Patents
Pyrotechnisches verzögerungselementInfo
- Publication number
- EP3218331A1 EP3218331A1 EP15801346.6A EP15801346A EP3218331A1 EP 3218331 A1 EP3218331 A1 EP 3218331A1 EP 15801346 A EP15801346 A EP 15801346A EP 3218331 A1 EP3218331 A1 EP 3218331A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- parts
- mixture
- delay
- firing
- 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.)
- Granted
Links
- 230000000979 retarding effect Effects 0.000 title claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 238000010304 firing Methods 0.000 claims abstract description 34
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims abstract description 17
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000010215 titanium dioxide Nutrition 0.000 claims abstract description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 9
- 239000010937 tungsten Substances 0.000 claims abstract description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052796 boron Inorganic materials 0.000 claims abstract description 6
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims abstract description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000000020 Nitrocellulose Substances 0.000 claims description 3
- 229920001220 nitrocellulos Polymers 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000615 substance of very high concern Toxicity 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C5/00—Fuses, e.g. fuse cords
- C06C5/06—Fuse igniting means; Fuse connectors
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/06—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being an inorganic oxygen-halogen salt
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
Definitions
- the invention relates to a pyrotechnic retarding element for use in pyrotechnic igniter chains, and more particularly to a retarder set therein.
- the delay element is characterized by a flexible and easy adjustment of the burning speed over a wide range.
- the triggering takes place via ignition chains, which can consist of several igniters.
- the task of this ignition chain is to convert an external trigger pulse into a pyrotechnic reaction and to react the effective charge at the desired time. Often it is necessary to keep a certain time interval between the external trigger and the reaction of the active charge. Since the times for external triggering and reaction of the active charge are generally fixed uninfluenced, a so-called delay element must ensure the necessary time interval (delay time) within the ignition chain. This delay time can be between a few milliseconds and several seconds, depending on the application.
- the ignition retarder (1) consists of a cylindrical metal tube (2) and usually contains three pyrotechnic sets.
- Metal tube (2) is preferably made of steel, brass or aluminum.
- the flame-sensitive Anakiungssatz (3) which is ignited by the upstream ignition means and has the task to safely ignite the following usually less sensitive delay set (4).
- the firing set (5) On the output side, after the delay set, there is the firing set (5) which ensures the transmission of the reaction to the following firing means.
- the pyrotechnic reaction thus runs linearly through the ignition retarder. All sets are introduced by one or more parts loading and pressing processes in the metal body. From a design point of view of the ammunition, it is desirable to realize the different delay times with a fixed length of the ignition retarder.
- the control of the delay time is preferably realized by the composition of sentences. What is needed, therefore, is a delay set system that can be fine-tuned within its composition allows the setting of the desired delay time.
- Pyrotechnic delay sets have been known for decades and are also used in civil blasting technology in so-called explosive detonators. They usually consist of a mixture of fuel and oxidant. Compared to civil applications, additional requirements are added when used in pyrotechnic ammunition.
- the burn - through capability ie the reliable linear burnup of the
- Delay rate must be given over a wide temperature range (at least -54 ° C to +71 ° C) and largely independent of the pressure conditions.
- the burning rate should ideally have no or only a small dependence on the temperature and the external pressure. It is distinguished between ignition retardants in "closed” and “open” construction. When the construction is closed, a triggering element (for example a primer cap) and a cover of the firing kit are integrated. In open design, the surfaces of the firing and firing are free. The open design requires from the used pyrotechnic sets a high degree of independence of the burning speed from the external pressure. In addition, a high stability of the delay rates and compatibility with the
- Pyrotechnic delay sets can be prepared as a dry mixture of the starting materials or in a wet process with the addition of a binder as granules of the starting materials.
- pyrotechnic delay sets are often used in open fire retardants for military applications, which on the one hand contain SVHC substances (Substances of Very High Concern) and, on the other hand, a comparatively clear one
- the temperature response in the processed state in the ignition retarder is approximately 10 to 20% of the nominal value of the delay time (temperature range: -54 ° C to +71 ° C).
- the present invention has for its object to provide a pyrotechnic delay element for pyrotechnic ignition chains. This should:
- a retarding element which contains in a metal sleeve a Anakiungssatz-, a Verzögerungssatz- and a Feuerungssatz mixture, wherein the starting and Feuerungssatz mixture at least 35 parts by weight of boron, at least 15 parts by weight of iron (III) oxide and at least 5 parts by weight of potassium perchlorate are in each case contained in addition to 100 wt .-% and in the mixture of the delay rate at least 5 parts by weight of potassium perchlorate, at least 10
- titanium (IV) oxide Parts by weight of titanium (IV) oxide, at least 25 parts by weight of tungsten and at least 1 part by weight of aluminum are contained. Components listed in the mixtures with a minimum content and optionally at least one further component supplement each other to 100 parts by weight.
- a retarding element in which the starting and firing rate mixture consist of at least 70 parts by weight of red lead and at least 20 parts by weight of silicon.
- Delay rate still contain 0.1 - 3% by weight of a binder as a surcharge.
- the length of the metal sleeve is 19 mm with an outer diameter of 6 mm and an inner diameter of 3.6 mm.
- the height of the delay rate column is 9 mm in all examples. Firing and firing have a height of 5 mm each.
- the delay time is then defined as the time between the initiation of the firing charge and the firing charge reaction ( Figure 2).
- the preferred delay time of 2.25 seconds, for example, with the following
- Potassium perchlorate 10% The desired good burn through capability could be proven by testing about 1000 ignition restraints of this design. Based on 1000 error-free tests, a minimum reliability of 99.7% (confidence level 95%) results, which clearly exceeds the usual military requirements for such components of 99%.
- the dependence of the firing time on the temperature was determined by the delay time in the firing delay in the temperature range between -54 ° C and +71 ° C. In the temperature range considered, it is about 8%, based on the firing rate at room temperature, and is thus clearly below the value of about 10-20% in conventional typesetting systems (for example potassium perchlorate / lead chromate / antimony).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014016512 | 2014-11-10 | ||
PCT/EP2015/076096 WO2016075091A1 (de) | 2014-11-10 | 2015-11-09 | Pyrotechnisches verzögerungselement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3218331A1 true EP3218331A1 (de) | 2017-09-20 |
EP3218331B1 EP3218331B1 (de) | 2020-01-01 |
Family
ID=54705561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15801346.6A Active EP3218331B1 (de) | 2014-11-10 | 2015-11-09 | Pyrotechnisches verzögerungselement |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3218331B1 (de) |
ES (1) | ES2781074T3 (de) |
WO (1) | WO2016075091A1 (de) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB628247A (en) * | 1944-07-08 | 1949-08-25 | Ensign Bickford Co | Improvements in or relating to slow burning compositions and process of producing same |
DE1061245B (de) * | 1956-12-20 | 1959-07-09 | Dynamit Nobel Ag | Kurzzeitverzoegerungssatz fuer elektrische Zuender |
US3028229A (en) * | 1958-08-27 | 1962-04-03 | Universal Match Corp | Pyrotechnic compositions |
DE3028914C1 (de) * | 1978-05-24 | 1991-12-12 | Buck Chem Tech Werke | Verwendung eines metallothermischen Heizsatzes zum Aufheizen von hochschmelzenden Metallsplittern in einer Brandsplitterladung |
SE446180B (sv) * | 1981-05-21 | 1986-08-18 | Bofors Ab | Pyroteknisk fordrojningssats |
FR2603576A1 (fr) * | 1986-09-09 | 1988-03-11 | Bickford Davey | Composition pyrotechnique pour detonateurs a court-retard " antigrisou " |
CH676389A5 (de) * | 1987-07-29 | 1991-01-15 | Eidgenoess Munitionsfab Thun | |
SE460848B (sv) * | 1987-09-29 | 1989-11-27 | Bofors Ab | Saett att framstaella pyrotekniska foerdroejnings- och anfyringssatser |
ES2170199T3 (es) * | 1996-12-13 | 2002-08-01 | Ruag Munition | Retardo pirotecnico, procedimiento para su fabricacion asi como su uso. |
-
2015
- 2015-11-09 EP EP15801346.6A patent/EP3218331B1/de active Active
- 2015-11-09 WO PCT/EP2015/076096 patent/WO2016075091A1/de active Application Filing
- 2015-11-09 ES ES15801346T patent/ES2781074T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
ES2781074T3 (es) | 2020-08-28 |
EP3218331B1 (de) | 2020-01-01 |
WO2016075091A1 (de) | 2016-05-19 |
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