EN 16264:2014
(Main)Pyrotechnic articles - Other pyrotechnic articles - Cartridges for powder actuated tools
Pyrotechnic articles - Other pyrotechnic articles - Cartridges for powder actuated tools
This European Standard defines the procedures for classifying, testing and labelling of cartridges for powder actuated tools (PAT cartridges), as defined in Clause 3 of this standard.
This European Standard does not apply to pyrotechnic articles containing blasting agents and military explosives except black powder and flash composition.
PAT cartridges contain pyrotechnic composition(s) delivering mainly gases, intended to propel a piston. The piston propels fasteners (e.g. nails) or drives hard marking characters into appropriate materials.
This standard also applies to PAT cartridges sold to persons younger than 18 years, if this is permitted by the member state due to the low hazard of the PAT cartridges.
NOTE PAT cartridges can also be used for hard marking tools. Information on cartridge operated fixing and hard marking tools can be found in EN 15895:2011.
This European Standard applies to the cartridges listed in Table 1.
(...)
Pyrotechnische Gegenstände - Sonstige pyrotechnische Gegenstände - Kartuschen für kartuschenbetriebene handgehaltene Werkzeuge
Diese Europäische Norm legt die Verfahren zum Einstufen, zur Prüfung und Kennzeichnung von Kartuschen für Befestigungswerkzeuge (Befestigungskartuschen) nach der Definition in Abschnitt 3 dieser Norm fest.
Diese Europäische Norm gilt nicht für pyrotechnische Gegenstände, die militärische Explosivstoffe oder kommerzielle Sprengstoffe außer Schwarzpulver und Blitzsatz enthalten.
Befestigungskartuschen enthalten pyrotechnische(n) Satz/Sätze, die vorwiegend Gase freisetzen, die einen Kolben antreiben. Der Kolben schlägt auf Befestigungselemente (z. B. Nägel) oder treibt harte Markierzeichen in entsprechende Materialien.
Diese Norm gilt auch für Kartuschen für Befestigungswerkzeuge, die an Personen unter 18 Jahren verkauft werden, wenn dies durch das Mitgliedsland aufgrund der geringen Gefährlichkeit der Kartuschen für Befestigungswerkzeuge gestattet ist.
ANMERKUNG Kartuschen für Befestigungswerkzeuge können auch für Hartmarkierwerkzeuge benutzt werden. Informationen zu kartuschenbetriebenen Befestigungs- und Markierwerkzeugen können in EN 15895:2011 gefunden werden.
Diese Europäische Norm gilt für die in Tabelle 1 aufgeführten Kartuschen.
Articles pyrotechniques - Autres articles pyrotechniques - Cartouches pour outils à charge propulsive
La présente Norme européenne définit les modes opératoires liés à la classification, à l'essai et à l'étiquetage des charges de scellement pour outils utilisant ces mêmes charges tels que définis à l'Article 3 de la présente norme.
La présente Norme européenne ne s'applique pas aux articles pyrotechniques contenant des explosifs, et explosifs militaires, autres que de la poudre noire ou une composition éclair.
Les charges de scellement PAT contiennent une ou plusieurs compositions pyrotechniques libérant principalement des gaz, dans le but de propulser un piston. Le piston, à son tour, propulse des projectiles (par exemple, des clous) ou entraîne des caractères de marquage dur dans des matériaux appropriés.
La présente norme s'applique également aux charges de scellement vendues aux particuliers de moins de 18 ans, si cela est permis par l'État membre, en raison du faible risque induit par les charges de scellement.
NOTE Les charges de scellement peuvent également être utilisées pour les outils de marquage. Les informations concernant les outils de marquage et de scellement figurent dans l'EN 15895.
La présente Norme européenne s'applique aux charges de scellement listées au Tableau 1.
Pirotehnični izdelki - Drugi pirotehnični izdelki - Pritrdilne kartuše
Standard EN 16264 definira postopke za klasifikacijo, preskušanje in označevanje kartuš za plinska orodja (kartuše PAT), kot je definirano v točki 3 tega standarda. Ta evropski standard se ne uporablja za pirotehnične izdelke, ki vsebujejo vojaški eksploziv in tržne eksplozivne sestavine razen črnega smodnika ali bliskovnega praška. Kartuše PAT vsebujejo pirotehnične praške, ki večinoma zagotavljajo pline, potrebne za poganjanje bata. Bat omogoča pritrjevanje (npr. žebljev) ali graviranje znakov v ustrezne materiale. Ta standard se uporablja tudi za kartuše PAT, ki se prodajajo osebam, mlajšim od 18 let, če država članica zaradi majhnega tveganja kartuš PAT to dovoljuje.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.UWXãHPyrotechnische Gegenstände - Sonstige pyrotechnsiche Gegenstände - BefestigungskartuschenArticles pyrotechniques - Autres articles pyrotechniques - Partie 2: ExigencesPyrotechnic articles - Other pyrotechnic articles - Fixing cartridges71.100.30Eksplozivi. PirotehnikaExplosives. PyrotechnicsICS:Ta slovenski standard je istoveten z:EN 16264:2014SIST EN 16264:2014en,de01-oktober-2014SIST EN 16264:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16264
September 2014 ICS 71.100.30 English Version
Pyrotechnic articles - Other pyrotechnic articles - Cartridges for powder actuated tools
Articles pyrotechniques - Autres articles pyrotechniques - Cartouches d'outils actionnés par poudre
Pyrotechnische Gegenstände - Sonstige pyrotechnische Gegenstände - Kartuschen für kartuschenbetriebene handgehaltene Werkzeuge This European Standard was approved by CEN on 8 February 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16264:2014 ESIST EN 16264:2014
Calibre Rimfire type 22 NC (5,5/16) 22 (5,6/16) 22 EX (5,6/25) 5,7/16 5,7/25 6,3/10 6,3/12 6,3/14 6,3/16 6,8/11 6,8/18 Centre fire type 9 × 17 9 × 20 9 × 27 38 SP (9 × 29) 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics (ISO 3611) EN ISO 9237, Textiles — Determination of the permeability of fabrics to air (ISO 9237) SIST EN 16264:2014
loose cartridge cartridge that is not mechanically attached to other cartridges and is inserted individually in the cartridge chamber (by hand) 3.6 collated cartridge cartridge that is contained with a number of others in a means of collation, e.g. a plastic collation strip or a metal disc 3.7 cartridge chamber essentially cylindrical or slightly conical bore which accommodates the cartridge before ignition; located in the rear end of the piston guide of a cartridge operated tool; the dimensions of the cartridge chamber correspond to cartridge calibre 3.8 powder actuated tool
PAT tool to drive fasteners into a base material by means of a piston powered by the hot combustion gases from a cartridge SIST EN 16264:2014
slug brass or semi hardened steel cylinder used in pressure barrel, having different face dimensions to reproduce the additional volume Va Note 1 to entry
“Slug” is used as a synonym of “plunger” in the context of pressure measurement with a test barrel. 3.22 propellant mostly nitrocellulose-based powder which fills the cartridge partly or totally, depending on cartridge strength, the hot combustion gases of which accelerate the piston of a cartridge operated tool 3.23 primary pack package of cartridges of the same calibre and strength (colour), offered for retail sale as a single unit 3.24 primer mix pyrotechnic composition located in the rim of the cartridge or in the centre primer which ignites the propellant when the ignition pin deforms the rim of the cartridge or the centre primer cup and locally compresses and ignites the primer mix 3.25 pyrotechnic composition mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of a self-sustained exothermic reactions 3.26 primer device used in centre fire cartridges consisting of a metal cup containing primer mix and an anvil located in the centre 3.27 rim circumferential outward bulge at the rear end of a cartridge generated by axial deformation of the hemispherical end of the punch-drawn metal blank 3.28 rimfire cartridge cartridge in which the primer mix is located in the rim of the cartridge case 3.29 test barrel test equipment used to measure the gas pressure and energy of PAT cartridges SIST EN 16264:2014
Figure 1 — VET 3.31 total volume of maximum cartridge VC total volume of maximum cartridge as presented in Figure 2 according to Table 2
Figure 2 — VC 3.32 volume of the material of the case Vm volume of the material of the case (without primer mix where rimfire cartridges are concerned, with primer where centre fire cartridges are concerned) as presented in Figure 3
Figure 3 — Vm SIST EN 16264:2014
Figure 4 — Va 3.34 total volume Vtot total volume of PAT tool
aETtotVVV+= as presented in Figure 5
Figure 5 — Vtot 3.35 free volume Vi volume of free space between the cartridge and the chamber CETiVVV−= as presented in Figure 6
Figure 6 — Vi SIST EN 16264:2014
Figure 7 — Vh 3.37 total additional volume VA additional volume given by the equation aCETaiA)(VVVVVV+−=+= as presented in Figure 8
Figure 8 — VA
3.38 total combustion volume VT volume given by the equation amETahT)(VVVVVV+−=+= as presented in Figure 9
Figure 9 — VT SIST EN 16264:2014
a) b)
c) Figure 10 — Dimensions of rim-fire type cartridges
Figure 11 — Dimensions of centre-fire type cartridges SIST EN 16264:2014
CARTRIDGE L3 L6 R R1 f Beta P1 P2 . S H1=H2 VC Rimfire type 22 NC (5,5/16) 15,6 15,3 1,12 7,06
5,74 5,74 17°3244” 27,64 5,49 5,49 0,39 22 (5,6/16) 16,2 15,5 1,12 7,06
5,74
5,74 0,35 22 EX (5,6/25) 25,3 25,1 1,12 7,06
5,74
5,74 0,68 5,7/16 16,3 16 1,36 7,3
5,74
5,74 0,43 5,7/25 25,5 25 1,4 7,15
5,74
5,74 0,69 6,3/10 10,8 10,3 1,25 7,6
6,32
6,32 0,26 6,3/12 12,8 12,5 1,3 7,6
6,32
6,32 0,33 6,3/14 14,5 14 1,3 7,6
6,32
6,32 0,38 6,3/16 16,6 16,3 1,3 7,6
6,32
6,32 0,5 6,8/11 11,8 11 1,45 8,5
6,86
6,86 0,34 6,8/18 18,7 18 1,45 8,5
6,86
6,86 0,61 Centre fire type 9 × 17 18,3 18,15 1,35 11,1 0,3 45° 9,58
9,58 1,08 9 × 20 20,00 19,50 1,35 11 0,50 45° 6,63
9,63 1,48 9 × 27 27,00 26,00 1,35 11 0,50 45° 9,63
9,63 1,99 38 SP (9 × 29) 29,2 29 1,47 11,18 0,3 45° 9,63
9,63 2,18 Definition of symbols: L3: total length of the cartridge after firing (mm) P1: diameter at the end of rill or rim (mm) L6: total length of the cartridge before firing (mm) H2: diameter of the case at the end of the cylindrical part (mm) R: thickness of case rim (mm) . = Angle of junction cone R1: diameter of case rim (mm) VC: Total volume of maximum cartridge (cm3) SIST EN 16264:2014
Figure 12 — Chamber dimensions Table 3 — Minimum chamber dimension
CARTRIDGE L3 R R1 P1 H2 G1 .1=VET Rimfire type 22 NC (5,5/16) 16 1,1 7,1 5,8 5,76 6 180° 0,45 22 (5,6/16) 16,33 1,1 7,3 5,76 5,76 6 180° 0,44 22 EX (5,6/25) 26 1,1 7,3 5,8 5,76 6 180° 0,7 5,7/16 17 1,36 7,3 5,8 5,76 6 180° 0,47 5,7/25 26 1,45 7,3 5,8 5,76 6 180° 0,71 6,3/10 11 1,25 7,7 6,35 6,35 6 180° 0,37 6,3/12 13 1,25 7,7 6,35 6,35 6 180° 0,43 6,3/14 15 1,25 7,7 6,35 6,35 6 180° 0,49 6,3/16 17 1,25 7,7 6,35 6,35 6 180° 0,56 6,8/11 12 1,45 8,55 6,9 6,9 6 180° 0,48 6,8/18 19 1,45 8,55 6,9 6,9 6 180° 0,74 Centre fire type 9 × 17 18,5 1,3 11,2 9,6 9,6 6 180° 1,37 9 × 20 20,50 1,38 11,08 9,64 9,64 10,20 180° 1,53 9 × 27 27,00 1,50 11,20 9,65 9,65 10,02 180° 2,01 38 SP (9 × 29) 30 1,5 11,25 9,67 9,65 6 180° 2,24 Definition of symbols: L3 = Length of chamber at diameter H2 (mm) R = Distance between breech face and the backward edge of barrel (mm) R1 = Breech diameter (mm) P1 = Diameter of chamber at distance R
(mm) H2
= Diameter at distance L3 (mm) G1 = Diameter at commencement of rifling (mm) VET = Volume of minimum chamber (cm3) SIST EN 16264:2014
Ø 16 mm (F7); — Length:
(200 ± 1) mm (from the end of the chamber); — Position of pressure transducer:
1,5 mm measured from the end of the chamber; — Transducer hole:
Ø 3 mm; — Depth:
3 mm. SIST EN 16264:2014
Key 1 barrel and transducer mounting 2 piezoelectric pressure transducer 3 cartridge holder 4 plunger Figure 13 — Test barrel assembly 5.4.2.3 Cartridge holder The cartridge holder shall meet the following requirements: — The insert shall be made from steel with a minimum tensile yield strength of R = 1 300 MPa as presented in Figure 14. NOTE 1 Suitable materials are no. 1.7707 (30CrMoV9) or no. 1.6580 (30CrNiMo8). NOTE 2 Diameter to be adapted to the fitting in the barrel. Dimensions in millimetres
Figure 14 — Cartridge holder SIST EN 16264:2014
16 mm (h7); — Mass:
Mp = (80 ± 1) g; — Additional volume:
Va = 0,16 cm3 to 0,80 cm3; — Length:
proportional to mass. SIST EN 16264:2014
Figure 15 — Plunger (slug) Table 6 — Plunger (slug) Test Va T cm3 mm Rimfire 0,16 1,00 + 0,02 Centre fire 0,40 2,50 + 0,05 Rimfire 0,80 5,00 + 0,05 5.4.2.5 Crossed slots The crossed slots of the piston shall lie in the axis of the groove of the transducer.
Key A top view B-B cross section a) Position of the crossed slots SIST EN 16264:2014
Key A top view B-B cross section b) Position of the crossed slots (Section B - B) and position of the firing pin (from below) (View A) Figure 16 5.4.2.6 Plunger operated test barrel The test barrel shall be made from steel with a minimum tensile strength of R = 1 000 MPa as presented in Figure 17. NOTE Suitable material is no. 1.7225 (42CrMo4). The dimensions in brackets are given for information. SIST EN 16264:2014
Figure 17 — Plunger operated test barrel 5.4.2.7 Seals The seals shall meet following requirements as shown in Figure 18. NOTE Suitable material is CuZn40Pb2. Dimensions in millimetres
Figure 18 — Seals SIST EN 16264:2014
≥ 100 kHz; 4) Deviation from linearity:
≤ 1 %; b) Electronic filter: 1) Approximately 20 kHz (−3 db); 2) Bessel characteristic n = 2 (12 dB/octave); c) Climatic chamber see 4.4; d) Timing device see 4.1 (type 2). 5.4.3 Procedure 5.4.3.1 General The test shall be carried out on cartridges acclimatized at least 24 h, in a climatic chamber, at the following conditions: — temperature: (+21 ± 1) °C; — relative humidity: (60 ± 5) %. 5.4.3.2 Rimfire In case of rimfire cartridges, the pressure shall be measured using at least 12 cartridges for each additional volume: Va = 0,16 cm3 and 0,8 cm3 5.4.3.3 Center fire In case of centre fire cartridges, the pressure shall be measured using at least 12 cartridges for an additional volume: Va = 0,4 cm3 5.4.3.4 Evaluation of the results Twelve firings shall be carried out for each additional volume in order to obtain 10 usable figures. If any failure to conduct the procedure correctly is observed, the respective results shall be disregarded and the test shall be repeated. For other aberrant extreme values, the following criterion shall be applied: SIST EN 16264:2014
> 0,490, 1P or 12P respectively shall be eliminated. If neither value is eliminated, the last two recorded values shall be disregarded. If only one value is eliminated, the last recorded values shall be disregarded. 5.4.3.5 Sequence of testing steps The test shall be conducted as indicated in the followings points: a) The testing cartridges shall be acclimatized for at least 24 h at an ambient temperature of (+21 ± 1) °C and at relative air humidity of (60 ± 5) %. b) The cartridge holder and the appropriate plunger for the additional volume shall be selected according to the calibre of the cartridge to be fired. c) The bore of the barrel shall be cleaned and lightly lubricated such that the plunger slides in easily. d) A special lubricant as described in f) of this paragraph shall be applied to the diaphragm of the electromechanical transducer. e) The electromechanical transducer shall be screwed onto the transducer holder, applying the tightening torque specified by the manufacturer. f) Before each firing, the channel through which the pressure will be transmitted shall be filled with a silicone-based lubricant of the following specifications: density approximately 1 (g/cm3), penetration 180 to 210 (1/10 mm) (still medium and agitated medium) in accordance with ISO 2137. g) The excess lubricant introduced into the barrel while attaching the electromechanical transducer shall be removed. h) The plunger shall be pushed in as far as it will go, with its flanges positioned opposite to the cartridge so that the cross-shaped opening in the piston is in line with the axis of the electro-mechanical transducer. i) In subsequent firings, care shall be taken that during handling the plunger is not moved – not even slightly – out of position. j) After each firing, the cartridge case shall be ejected and recovered to examine the marks from the firings. k) The plunger shall be recovered and checked to ensure that there are no marks from the firings. SIST EN 16264:2014
This value shall be less or equal to Pmax (0,4) where )(anVP
Arithmetic mean of n (10) pressure measurements for the additional volume Va; Ki.n:
Coefficient of tolerance for n measurements. Here, the coefficient for 3 sigma and 90 % confidence level is used: 2,36; Sn:
Standard deviation of pressure for n measurements. In the case of rimfire cartridges, the mean pressure nP for the two additional volumes Va = 0,16 cm3 and 0,8 cm3 shall be less than or equal to the respective maximum admissible values: Pmax (0,16) and Pmax (0,8). In the case of centre fire cartridges the mean pressure nP for the additional volume Va = 0,4 cm3 shall be less than or equal to the maximum declared value Pmax (0,4): )()(amaxa10VPVP≤ The requirement for a cartridge to produce no individual value for maximum pressure in excess of 1,15 Pmax (Va) shall be regarded as fulfilled if: )(,amax103,1010151VPSKP⋅≤⋅+ )(,,amax1010103,1010151362VPSPSKP⋅≤⋅+=⋅+ Kamax151PVP=⋅)(, SIST EN 16264:2014
3 Green 4 Yellow 5 Blue 6 Red 7 Black or purple Maximum Energy 5.5.2 Equipment For the energy measurement, the equipment of 5.4.2 shall be used. For the test a plunger with additional volume of Va = 0,16 cm3 shall be used. The plunger velocity shall be measured using light screens and a computing chronograph. The cumulative accuracy, comprehensive of chronograph accuracy and stability error shall be less than 0,25 %. Another device with the same accuracy or better may be used. Climatic chamber: see 4.4. Timing device: see 4.1 (timing device type 1). 5.5.3 Procedure 5.5.3.1 General The test shall be carried out on cartridges acclimatized for at least 24 h at the following conditions: — temperature: (+21 ± 1) °C; — relative humidity: (60 ± 5) %. 5.5.3.2 Test sequence The test shall be conducted simultaneously to the pressure test (5.4). 5.5.3.3 Test setup The first light screen shall be located at 1 m from the barrel muzzle and orthogonally to the plunger trajectory. The second light screen shall be located 0,5 m ± 0,5 mm from the first one, orthogonally to the plunger trajectory. 5.5.3.4 Procedure of velocity measurement The plunger velocity for the defined additional volume Va shall be recorded. SIST EN 16264:2014
5.6.2.2 The test equipment consists of a commercially available tool of the type which the cartridge type approval is applied for. The tool body shall not be modified. The test tool shall have a piston with a reduced system testing volume Vs as defined below (compare Figure 20). 11*bbsah1,151,151=⋅+−⋅VVV The values of band *hV, etc. per calibre, as given in Table 10, apply. NOTE The free combustion volume in the reduced chamber *hV is calculated as follows: *hhcα=−⋅VVM where SIST EN 16264:2014
is the mass of the propellant and primer mix in g; . = 1/ = 0,6 is the average specific volume of the propellant and primer mix in cm3/g. Table 10 — Values for the calculation of the test volume Vs for the collation test Calibre b *hV – cm3 6,3/10 - 0,607 0,14 6,3/16 - 0,615 0,20 6,8/11 - 0,646 0,20 6,8/18 - 0,684 0,31 SIST EN 16264:2014
Key 1 minimum operational volume 2 reduced system testing volume Figure 19 — Volumes of combustion chamber (Va, Vs) 5.6.3 Procedure for 5.6.1 a) to 5.6.1 c) The test shall be carried out on four standard collation systems, fully loaded with cartridges of identical strength, acclimatized at least 24 h at the following conditions: — temperature: (+21 ± 1) °C; — relative humidity: (60 ± 5) %. The test shall be performed by firing three consecutive cartridges of each collated system. The test shall be carried out with a fastener and base material suitable for the combination of tool and cartridge used in the test. If the tool is equipped with a feature to regulate the energy, the test shall be conducted at maximum energy level. 5.6.4 Acceptance criteria for 5.6.1 a) to 5.6.1 c) The test is passed if after the firing: a) the walls and the bottoms of all cartridge cases are free from cracks, holes and fractures; b) the collation system is intact and not broken or fractured and is free from lengthwise cracks affecting the three spent cartridges; c) neighbouring cartridges have not been affected. If case fracture or collated strip rupture are experienced, the test equipment shall be thoroughly checked. If the test equipment is found to be defective, the test is to be fully repeated, as described in 5.6.3 after repairing or replacing the test equipment. SIST EN 16264:2014
Key 1 firing unit 2 cartridge chamber insert 3 combustion chamber 4 nozzle 5 muff and flame deflector 6 collector bag Figure 20 — Schematic drawing of residue test rig 5.7.2.3 Firing unit (1) Any suitable firing unit with adequate ignition pin geometry and ignition energy may be used to fire the cartridges. 5.7.2.4 Cartridge chamber insert (2) The geometry of the cartridge chamber is defined for each calibre in Table 11. The geometry matches the design of the cartridge chamber of the tool of respective calibre in order to produce the same opening behaviour of the cartridge as in real use. SIST EN 16264:2014
a) Cartridge chamber insert for calibre 6,3/10 Dimensions in millimetres
b) Cartridge chamber insert for calibre 6,3/16 Figure 21 SIST EN 16264:2014
a) Cartridge chamber insert for calibre 6,8/11 Dimensions in millimetres
b) Cartridge chamber insert for calibre 6,8/11 Figure 22 SIST EN 16264:2014
Cartridge chamber insert for calibre 6,8/18 Dimensions in millimetres
Cartridge chamber insert for calibre 6,8/18 Figure 23 5.7.2.5 Combustion chamber (3) (volume and dimensions defined per calibre). The combustion chamber is of cylindrical shape. It is created by a ring-shaped cylindrical insert of varying bore mounted inside a larger bore in the body of the test barrel. Depending on the calibre of the cartridge to be tested, the combustion chamber has the volumes as given in Table 12 and dimensions as given in Figures 26 a) and 26 b). Table 12 — Calibre and volume of combustion chamber Calibre Volume of combustion chamber 6,8/11 0,3 cm3 6,8/18 0,6 cm3 6,3/10 0,3 cm3 6,3/16 0.6 cm3 SIST EN 16264:2014
1) SEFAR TETEX MULTI 05-37-420 W is the trade name of a product supplied by Sefar AG. This information is given for the convenience of users of this European Standard and does not constitute an endorsement by CEN of this product. Equivalent products may be used if they can be shown to lead to the same results. SIST EN 16264:2014
Key 1 bordering tape 2 reinforcement of edges: Longs sides topstitched (2x with double needle), bordered and topstitched (1x with double needle); tight stiches with PTFE thread 3 warp direction Figure 24 — Dimensions of collector bag SIST EN 16264:2014
Figure 25 — Example of a test rig The combustion pressure shall be maintained at a level of at least 750 bar. For this purpose, with low power level cartridges which produce combustion pressures below 750 bar (e.g. 6,8/11 grey and brown), a pot shaped insert with a reduced diameter bore acting as a diaphragm shall be inserted instead of the ring-shaped insert described below (see Figures 26 a) and 26 b)). The bore diameter at the bottom of the pot-shaped insert shall be adjusted such that a combustion pressure of between 750 bar and 800 bar is achieved. The volume of the combustion chamber shall be maintained at the same volume defined for the calibre. As shown in Figures 26 a) and 26 b), the inserts shall be placed in the bore of the test barrel. SIST EN 16264:2014
a) Test barrel with ring shaped insert (example of 6,3 calibre)
b) Test barrel with pot-shaped insert (example of 6,3 calibre) Figure 26 SIST EN 16264:2014
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