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1、- STD-JIS M 7002-ENGL 1784 4733b08 0537554 279 W UDC 622.81 7 : 669.35725.01 8.74 : 620.1 63 b JS ) r * JAPANESE I NDUSTRIAL STANDARD Non-Ignition Testing Methods for Non-Sparking Beryllium Copper Alloy Tools Translated and Published by Japanese Standards Association Printed in Japan 5 s Copyright J
2、apanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS U 7002-ENGL 1984 M 4933b08 0537555 LO5 M Translation without
3、guarantee standard in Japanese is to be evidence i n the event of any doubt arising, the original Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking p
4、ermitted without license from IHS -,-,- STD-JIS M 7002-ENGL 1984 4933b08 053755b UDC 622.817:669.35725.018.74:620.163 JAPANESE INDUSTRIAL STANDARD J I S Non-I gnition Test in g Met hods for Non-S parkin g Beryllium Copper Alloy Tools M 7002-1984 1. Scope This Japanese Industrial Standard specifies n
5、on-ignition testing methods for non-sparking beryllium copper alloy tools to be used in mines, factories and other work sites where sparks may lead to explosion as well as aboard ships, on vehicles and aircraft. Remarks 1. The units and the numerical values given in I 1 in this standard are in accor
6、dance with the International System of Units (SI) and are appended for informative reference. 2. The testing method and the testing gas should preferably be selected by considering the actual condition of non-sparking beryllium copper alloy tools in use. 2. TvDes of Testing Methods . The testing met
7、hods shall be classified into the following four types: (i) Falling weight non-ignition testing method (2) Rotary friction non-ignition testing method (3) High-speed impact non-ignition testing method 3. Test - 3.1 Falling Weight Non-Ignition Test (i) Testing Apparatus A s shown in Attached Fig. 1,
8、the testing apparatus shall consist of the explosion chamber made of steel plate not less than 3 mm thick with a capacity of approximately 0.5 m3, the inclined frame supporting a steel plate on which the test steel plate to be mounted, and a weight dropping device. The explosion chamber shall be pro
9、vided with a gas stirring fan and a cellophane-covered opening large enough to expedite releasing explosion flames. (2) Instruments Used for Test The instruments used for test shall be as follows: (2.1) Test Piece dimensions as indicated in Attached Fig. 2. The test piece shall be of the shape and A
10、pplicable Standards: JIS B 0601-Surface Roughness JIS G 4051-Carbon Steel for Machine Structural Use Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networkin
11、g permitted without license from IHS -,-,- STD-JIS M 7002-ENGL 1989 4933b08 0537557 T88 = 2 M 7002-1984 (2.2) Weight 14 kg having the shape and dimensions indicated in Attached Fig. 2. The weight shall be a steel block of approximately (2.3) Testing Steel Plate The material, the standard dimensions,
12、 the hardness and the surface roughness of the testing steel plate shall be as follows, and it shall be used as a plate exposed outdoors for not less than six weeks, thus being rusted in natural conditions. (a) Material G 4051. The material shall be S 55 C specified in JIS (b) Standard Dimensions Th
13、e standard dimensions shall be 350 mm x 350 mm x 15 mm. (c) Hardness The hardness shall be HRC 20 to 25. (d) Surface Roughness The surface shall be rougher than the roughness of 25 S specified in JIS B 0601. (3) Testing Gas A s the testing gas, those of 6.5 % methane and 93.5 % air, 5.3 % propane an
14、d 94.7 % air, or 21.0 % hydrogen and 79.0 % air in concentration shall be used. (4) Testing Method The testing gas in the explosion chamber as indicated in Attached Fig. 1 is sufficiently mixed with a gas stirring fan. Then, a test piece is connected to a weight with a bolt as given in Attached Fig.
15、 2 and it is let to fall by free dropping from a drop height of 4 m through a weight guide pipe to crash against the testing steel plate inclined at 45O. 3.2 Rotary Friction Non-Ignition Test (1) Test Apparatus As shown in Attached Fig. 3, the testing apparatus shall consist of the explosion chamber
16、 made of steel plate not less than 3 mm thick with a capacity of approximately 0.5 m3, the disk roatating device with a rotary disk, and the pushing device for a test piece. provided with a gas stirring fan and a cellophane-covered opening large enough to expedite releasing explosion flames. The exp
17、losion chamber shall be (2) Instruments Used for Test The instruments used for test shall be as follows: (2.1) Test Piece diameter and length are approximately 10 mm and 150 mm respectively, with the rounded end of approximately 5 mm in radius. The test piece shall be a round bar whose 1 4 (2.2) Dis
18、k Rotating Device The disk rotating device shall be of power output 2.2 k W and speed 3000 rpm. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking per
19、mitted without license from IHS -,-,- STD-JIS U 7002-ENGL 1784 4733b08 0537558 914 3 M 7002-1984 (2.3) Rotary Disk The material, the standard dimensions, the hardness and the surface roughness of the rotary disk shall be as follows, and it shall be used as a disk exposed outdoors for not less than s
20、ix weeks, thus being rusted in natural conditions. (a) Material G 4051. The material shall be S 15 C specified in JIS (b) Standard Dimensions The standard dimensions shall be $ 250 mm x 10 mm. (c) . Hardness The hardness shall be HRC 10 to 15. (d) Surface Roughness The surface shall be rougher than
21、the roughness of 25 S specified in JIS B 0601. (2.4) Pushing Device for Test Piece This device shall be driven by a pneumatic or a hydraulic cylinder. (3) Testing Gas (3). The testing gas shall be the gas specified in 3.1 (4) Testing Method The testing gas in the explosion chamber given in Attached
22、Fig. 3 is sufficiently mixed with a gas stirring fan. test piece installed on the side of explosion chamber is pushed onto the surface of the rotary disk with a pneumatic (or hydrau- lic) cylinder. 20 meters a second in relative friction speed between the test piece and the rotary disk and 50 kgfI49
23、0 NI in pushing force, is carried out five times with the same test piece and the presence of ignition within one minute of friction time is examined. Then, the test piece attached to the pushing device for a The friction ignition test under the conditions of 3.3 High-speed Impact Non-Ignition Test
24、(1) Testing Apparatus A s shown in Attached Fig. 4 , the testing apparatus shall consist of the explosion chamber made of steel plate not less than 3 mm thick with a capacity of approximately 0.5 m3, the inclined frame supporting a steel plate on which the testing plate is mounted, and the gun for s
25、hooting a test pellet. The explosion chamber shall be provided with a gas stirring fan and a cellophane-covered opening large enough to expedite releasing explosion flames. (2) Instruments Used for Test The Instruments used for test shall be as follows: (a) Test Piece The test piece shall be a pelle
26、t of the shape and dimensions as shown in Attached Fig. 5. (b) Gun for Shooting Test Pellet pellet shall be a plunger-pump type air rifle of 22 caliber. The gun for shooting a test Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=
27、Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS M 7002-ENGL L7ALI 4933b08 0537557 850 1 2 3 4 5 6 7 8 9 10 11 12 4 M 7002-1984 Guide pipe for falling weight Winch Weight Test piece Window for observation Opening Testi
28、ng steel plate Inclined frame supporting steel plate Device for moving inclinded frame Explosion chamber Gas stirring fan Testing gas (c) Testing Steel Plate The testing steel plate shall be a plate specified in 3.1 (2) (2.3). (3) (4) Testing Gas (3). The test gas shall be the gas specified in 3.1 T
29、esting Method The testing gas in the explosion chamber as given in Attached Fig. 4 is sufficiently mixed with a gas stirring fan. Then, after changing the gun with the test pellet, the pellet is shot at an initial speed of 200 meters a second through the window for passing the test pellet provided a
30、t the side of explosion chamber onto the testing steel plate inclined at 30 and place at a distance of 1 m from the muzzle. This operation is carried out with the ten test pellets made from the same material to examine the presence of ignition. Attached Fig. 1. Example of Apparatus for Falling Weigh
31、t Non-Ignition Test Unit: mm A ? & = - o , : No. I Name Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitted without license from IHS -,-,- a
32、L 1, 12 b 14 4D $di $d2 4 280 30 50 16 3 100 60 25 30 M16 dimension 5 M 7002-1984 y 5 Attached Fig. 2. Weight and Test Piece - No, - 1 2 3 - Name Weight Test piece Bolt Attached Fig. 3. Example of Apparatus for Rotary - Friction Unit: mm Non -pi t ion Test No .( Name Explosion chamber Disk rotating
33、device Test piece IGas stirring fan Pushing device for a test piece Rotary disk Testing gas Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitt
34、ed without license from IHS -,-,- STDmJIS M 7002-ENGL 1784 4733b08 05375bL Li07 6. M 7002-1984 Attached Fig. 4. Example of Apparatus for High-speed Impact Non-Ignition Test Unit: mm - No, - 1 2 3 4 5 6 7 8 9 - Name Explosion chamber Window for test pellet passing Inclined frame supporting steel plat
35、e Testing steel plate Gas stirring fan Air rifle Barrel supporter Handle for moving testing steel plate Testing gas Attached Fig. 5. Test Pellet Unit: mm 7.0 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Re
36、sale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS fl 7002-ENGL L711 m 4733b0B 05395b2 345 . M 7002-1984 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment: 1969-01-01 Date of Revision: 19
37、84-05-01 Date of Public Notice in Official Gazette: 1984-05-28 Investigated by: Japanese Industrial Standards Committee Divisional Council on Natural Resources and Energy This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan 0 JSA, 1986 Rinted i n Tom by Hohbunaha &.,Ud. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 07:40:49 MDTNo reproduction or networking permitted without license from IHS -,-,-