1、-_ - MIL-B-63954 L3 m 7779706 0350830 7 m - 5“-31- - - _- MIL-B-63454. (AR) 7 SEPTEMBER i982 MILITARY SPECIFICATION BAND, ROTATING, NYLON GLASS-FILLED FOR PROJECTILE, 105MM, M737 TPDS-T This specification is approved for use by U.S. Army Armament Research and Development Command, and is available fo
2、r use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification provides requirements and quality assurance provisions for the fabrication of a rotating band, nylon, glass-filled for use in the 105MM M737 TPDS-T projectile. 2. APPLICABLE DOCUMENTS. 2.1 Gove
3、rnment documents. - 2.1.1 Specifications _ . and standards. Unl-ess otherwise specified, the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specifi
4、cation to the extent specified herein. SPECIFICATIONS MILITARY MIL-A-2550 - Ammunition General Specification For MIL-A-48078 - Ammunition, Standard Quality Assurance I 1 1 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improvin this document
5、 should be addressed to: Commander, US Army Armament al C d U al U al E: O z c u . . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-63454 (AR) 4.4.3 Inspection equipment. The inspection equipment required to perform the examinations and test
6、s prescribed herein is described in the “Paragraph Reference/Inspection Method“ column in the tables starting with paragraph 4.4.2.1. The contractor shall submit for approval inspection equipment designs in accordance with the terms of the contract. See MIL-A-48078 Section 6 and 6.3 herein. t. MIL-B
7、-63LI5LI 13 9977906 0350838 3 M 4.5 Methods of inspection. - - - 4.5.1 Testing conditions. Unless otherwise specified in the test method or the applicable specification, the atmospheric conditions surrounding the specimen 24 hours prior to test and during tests shall be 23oC + 2oC (73.4OF + 3.6OF) a
8、nd 50% t 5% relative humidity. In their plastic shipping bags until testing. The test specimens shall conform as closely as possible to the dimensions shown in Figure 1. A11 test specimens are to remain sealed 4.5.2 Tensile strength and extension to failure test. Each test specimen conforming to Fig
9、ure i detail 3 shall be tested for tensile strength and extension to failure. The test shall be performed following the criteria of ASTM D2290, procedure B with the following exceptions: a. The specimen will be uniform in cross section (without reduced section) as detailed in Figure 1. b. The split-
10、disc test fixture and accessories shall be double pinned and conform to Figure 3 or its approved equivalent. (Ref. 4.3.2) c. The cross-head speed shall be 0.5 + 0.1 inches per minute. d. The split discs shall be separated until each half is in contact with the specimen without applying a load to the
11、 specimen. The distance of separation (initial separation) shall then be measured. Split disc separation upon specimen rupture (ultimate separation) shall also be measured. Inches of extension shall be determined by subtracting initial separation from ultimate separation. The tensile strength (psi)
12、shall be recorded. c 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-u I tr, - z o z a dm Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I MIL-B-63454 13 7777706 O350840 I W MIL-B-63454 (AR) 380
13、t.005 Y-* MATERIAL-TOOL STEEL FIGURE 3-SPLIT DISK TENSILE STRENGTH TEST FIXTURE 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 of Fi Figur in 30 data shear shear MIL-B-6345q 13 7977906 0350843 3 MIL-B-63454 (AR) .5.3 Shear strength test. Each t
14、est specimen conforming t gure 1 detail 2 shall be placed in the test fixture shown i e 2, and tested at a loading rate that will produce failure to 60 seconds after initial application of the load. reported for each specimen shall include actual dimensions, ing load and shear strength in pounds per
15、 square inch. The strength shall be determined as follows: The Shear Strength (PSI) = ,O n where: P = load (lbs.) d = diameter of punch (inches) t = thickness of sample (inches) 4.5.4 UerS:.ess test. The inside and outside surfaces of each test specinen conforming to Figure 1 detail 4 shall be teste
16、d with a Rockwell Hardness Tester, utilizing the Rockwell IR“ scale in accordance with ASTM D785. e 4.5.5 Densit . Each test specimen conforning to Figure 1 detail 3 sha dtested in accordance with ASTM D792, method A-l. The density in grams per cubic centimeter shall be determined as follows: Densit
17、y, (gms./cm3) = DL wA Where A - wL DL = Density of liquid (gms./cm3) WA = Weight of specimen in air, (gms.) WL = Weight of specimen in liquid, (gms,) When water is used “DL“ becomes unity. Care shall be exercised ? to remove air bubbles surrounding the specimen when being weighed in water . 4.5.6 Mo
18、isture content. All specimens will remain sealed in their shipping bags until testing. bags, wipe clean of any loose material with a lint-free cloth or tissue, and weigh on an analytical balance. This is the initial weight. For 24 hours, condition the specimens in an oven maintained at 160 + 2OF (71
19、.1 + l.lC). desiccator and reweigh. RepeaT oven-conditioning, desiccator-cooling, and weighing cycle until the difference between two consecutive weighings is no more than 5 milligrams. This is the conditioned weight. Calculations are as follows: Remove specimens from their Then cool them in a * Pro
20、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I v -r- J I -I - i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 MIL-B-63454 13 777770b 0350843 7 W MIL-B-63454 (AR) Percent Moisture Content = Initial
21、 weight - Conditioned weight x 100 Ini t ia1 weight 4.5.7 Material defects. Internal and external surfaces of bands shall be inspected to determine compliance with 3.2. Each band selected for this inspection shail be illuminated with a minimum of 400 foot-candles. Bands shall be rotated 360 and insp
22、ected with an unaided eye. Visual standards shall be established by the contuxtor for use as references in determining acceptability. prior to use. The standards shall be approved by the Government 4.5.C Glass content test. Each test specimen conforming to Figure 1 detail4 shall be tested in accorda
23、nce with ASTM D2584. The glass content will be calculated by subtracting the ignition loss (%) from 100. 5. PACKAGING 5.1 Packaging requirements. Packaging shall be as specified in MIL-STD-1169 Level B. The packaging used shall protect the bands against moisture absorption. 5.2 Packing and marking.
24、Packing and marking shall be as specified in MIL-STD-1169. 5.4 Shipping. When components from more than one lot are shipped as a car load, each lot must be kept separate and the division between lots clearly indicated to prevent mixing of lots in transit. 6. NOTES 6.1 Visual examination qualificatio
25、n. When compliance with the applicable requirements is in doubt as a result of visual f examination, characteristics may be measured or gaged to determine acceptability. 6.2 Ordering data. See MIL-A-48078. a. Data Cards. Data cards shall be prepared for each lot in accordance with MIL-STD-1167. b. D
26、elivery of data cards to the technical agency. The following address is to be added to those listed in the contract (Form DD 1423) for the delivery of one copy, to the technical agency of the Ammunition Data Cards: 14 .i Provided by IHSNot for ResaleNo reproduction or networking permitted without li
27、cense from IHS-,-,-MIL-B-b3q54 13 W 7777706 035084V 7 MIL-B- 634 5 4 (AR) Commander, US Army Armament Research and Development Command Dover, New Jersey 07801 ATTN: DRDAR-QAT-A 6.3 Submission of inspection equipment designs for approval. See MIL-A-48078. Submit equipment designs, as required to: Com
28、mander US Army Research and Development Command ATTN: DRDAR-QAT-I Dover, NJ 07801 6.4 Intended use. This band will be utilized on Cartridge, 105MM, TPDS-T, M724A1. Custodian: Army-AR Preparing activity: Army-AR (pro j ec t 13 15 -A 4 O 3 ) * U& QOVERNMENT PRINTING OFFICE 1882 O - M)o-02214609 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
