1、MIL-P-222 :.i, I- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-222 appqtus shall consist of a -semimicro calorimeter complete with thermometer (I9 to 25 C), spy glass, stirrer motor drive, ignition unit, and an adapter for pressurizing gas.
2、See 6.3) 4.6.4.2 Equipment and accessories In addition to the apparatus described above; the following shall b required: (a .Argon gas supply in pressure cylinder . (b 1 Standard pellets for standardizing calorimeter, 4.6.4.3 ProcedwcG. The procedure for deteminirrg the calorific value of the gas-
3、less ignition powder shall be as described in the manufacturer s manual of instruc- tions for opexation of the calorimeter (see 6.3). l?ailu?e of a sample of the powder (4.2.2) to have a minimum heat output of 450 calories/gram shall be cause for re- jection of the bottle from which the saniple was
4、taken. If a sample fails the test, shall be removed from the lot. - each bottle in the lot shall be sampled amd tested. Each bottle that fails the test = *- 4.6.5 Low-temperature functioning test. The low-temperature functioning test is conducted on a sample from each lot, The spechens for test shal
5、l consist of 20 test elements loaded with the powder from the sample as specified in 4.2.2. 4.6.5.1 Loading of test elements. The total weight of the test elements shall be recorded ments of “Ammunition Ashore, “ OP 5, are applicable. 9 Provided by IHSNot for ResaleNo reproduction or networking perm
6、itted without license from IHS-,-,-. MIL-P-222bqA 33 m 99797Ob 0302043 b m I MIL-”222 Other ingredient weights are calculated on the basis of the calculated dry weight of zirconium. 6.4*3 Mixing .of gasless ignition powder. The mixing procedure is based on a single batch of ignition powder. The oper
7、ator must exercise cam to maintain safe- ty and reproducibuity of mixing conditions to provide a homogeneous mixture of the desired composithon of ignition powder. The mixer should be located in an isolated and barricaded area. Weighing and mixing should be performed in a,-shielded area I -. il 1 Ad
8、d ethyl alcohol to a clean mixing bowl which is adapted to the mixer 2 Weigh diatomaceous earth and ferric oxide and add to the bowl. 3 Lower mixing blade (fluid shear type) in.to bowl.and allow to run, 4 Stop mixer periodically and, using ethyl alcohol, wash accumulated material (5 Add airconium sl
9、urry and repeat steps 3 and 4. (6 1 Transfer mix .into polyethylene bottles (a maximum of 250 grams per bottle). back into mixing ama. Seal bottles in asdordance with 5?l,1.2. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-P-222&A(AS) 6.4 .
10、4 Drying of knition powder. (1) Pour matesial to be dried into a metaJ. drying tray, (4 Transfer t.he dried and cooled ignition powder to a 30-mesh sieve with (5) Screen the powder on a Ro-Tap or other shaking appaxatus operated by . I 2 Dry at 60 C for 16 hours minimum 3 “ter drying, cool the powde
11、r for a, minimum of 20 minutes. porcelain Mls or rubber stoppers remote control and located in an isolated and barricaded asea. I 6 When screened, remove the sieve pan behind a shield, 7 Transfer the screened ignition powder to conductive rubber containers. The maximum quantity placed in each contai
12、ner- sha,ll be limited to 50 grams, 6.4.5 Storage of mixed ignition powder, When ignition powder manufactured and stored is over 200 grams, the powder shaU be stored wet in well-stoppered poly- ethylene containersI Minimum weight of - ethyl alcohol (conforming to MIL-E-463) added shall be 25 percent
13、 c$ weight of ignition powder, . 6.5 Modifications to test procedures Operating procedures for use of pyro- technic delay timing apparatus 5.n testing the ignition powder shall be as speci- fied in AD 1014 with the following exceptions to 3.0 of that document. ignition element holder and psimer hold
14、er in accordance with LC 496345. primer holders and ignition *element holders onto spacers. 6.6 Changes from previous issue Asterisks are not used in this revision to - identify changes with respect to the previous issue, due to the extensiveness of the changes. Custodian: Navy - AS *US. GO JERNMENT PRINTING OFFICE: 1978 - 703-12211415 II Preparing activity: Navy - AS Project No. 1375-N129 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
