1、NIL-H-Yd2b7 13 = 777770b 0427Y65 3 = 4 MIL-H-48269 (PA) *-. 5:-April i974 . . . ,.,.-*- MILITARY SPECIFICATION . . HMX/KEL-F RESIN MOLDING POWDER (FOR USE IN AMMUNITION) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specificati
2、on covers a high-energy solid explosive composed of cyclotetramethylenetetranitramine (HMX) and a polymer of trifluorochloroethylene, which acts as a binder for the HMX (see 6.3). 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for
3、 proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-H-45444 - HMX STANDARDS MILITARY MIL-STD-105 MIL-STD-109 MIL-STD-650 MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1235 - Single and Multilevel Continuous - Sampling Procedures and Tables fo
4、r Inspection by Attributes (ABC-STD-105) - Quality Assurance Terms and Definitions - Explosive: Sampling Inspection and Testing Sampling Procedures and Tables for Inspection by Attributes DRAWINGS U.S. ARMY 7548644 - Box, Packing for High Explosives Assembly, Details, Packing and Marking PSC: 1376 P
5、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - .- - MIL-H-982b9 13 - I, 97799Ob 04279bb 5 F MIL-H-48269 (PA) I 7548645 - Carton, Packing, Reusable, Collapsible for High Explosives (Copies of standards, specifications, drawings and publications req
6、uired by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the Contracting Officer). 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise indicat
7、ed, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS ASTM Designation: E300 - 70 Recommended Practice for Sampling Industrial Chemicals (Application for copies of ASTM Standards should be addressed to the American Soci
8、ety for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania, 19103). 3. REQUIREMENTS 3.1 Material. The molding powder shall be a free-flowing white material in the form of small agglomerates consisting of white grains of HMX (complying with Grade II, Class A, of MIL-H-45444A) surroun
9、ded and held together by a Pesin-like binder (see 6.4). powder shall be 0.78 grams (g) per cubic centimeter (cc), min., when determined as specified in 4.4.1. of the molding powder shall be 0.10 percent, maximum, when determined as Specified in 4.4.2. E 3.2 Bulk density. The bulk density of the mold
10、ing 3.3 Volatiles. The moisture and other volatiles content 3.4 Composition. The composition of the molding powder shall be as specified in Table I, when determined as specified in applicable paragraphs of 4 . 4.3. TABLE I Constituent Percent by Weight Applicable Paragraphs . Binder HMX 2 5.0 t 0.4
11、95.0-k 0.4 4.4.3.1 4.4.3.2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7, MIL-H-48267 13 = 777770b 0427467 7 MIL-H-48269 (PA) 3.5 Vacuum Stability Test (12OOC). The volume of gas evolved from 5 grams of the molding powder heated at 12OOC for 40 h
12、ours in the 12OOC Vacuum Stability Test shall.not-exceed 0.8 milliliter, when determined as specified in 4.4.4. 3.6 Granulation. The molding powder shall comply with the following granulation requirements when determined as specified in 4.4.5. U.S. Standard Sieve No. Cumulative Percent Retained 4 6
13、35 100 0.2 max. 1.0 max. 90.0 min. 98.5 min. 3.7 Workmanship. The material shall be free from metal or wooden particles, paper and other foreign material. 3.8 First article testing. The specification makes provisions for first article testing. Submission of first article quantity by the contractor s
14、hll be as specified in the contract. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in t
15、he contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such
16、 inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order to define the terms used herein. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-48
17、269 (PA) 5 I 4.1.1 Submission of product. At the time the completed lot of product is submitted to the Government for acceptance the contractor shall supply the following information accompanied by a certificate which attests that the information provided is correct and applicable to the product bei
18、ng submitted: a. A statement that the lot complies with all requirements and quality assurance provisions specified in this specification. b. Specification number and date, together with an identification and date of changes. c. Certificates of analysis on all material used directly by the contracto
19、r when such material is controlled by Government specifications, shall be made available upon request by the contracting officer. d. Quantity of product in the lot. e. Date submitted. The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submi
20、tted shall be substantiated by evidence of the agents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent certificates unless, during the course of the contract, this authority is vested in another agent of the certifying organization. #- 4.2
21、First Article Inspection 4.2.1 Submission. Prior to initiation of regular production the contractor shall submit a first article sample consisting of 2 pounds of molding powder in accordance with instructions issued by the Contracting Officer for evaluation in accordance with paragraph 4.2.2. All sa
22、mples submitted shall have been produced by the contractor using the same production processes, procedures, and equipment as will be used in fulfilling the contract. All materials, including packaging and packing, shall be obtained from the same sources of supply as will be used in regular productio
23、n. The sample shall be accompanied by certificates of analysis. A first article quantity, shall also be submitted whenever there is a lapse in production for a period in excess of 90 days, or whenever a change occurs in manufacturing process, material used, drawing, specification or source of supply
24、 as to significa2tly affect product uniformity as determined by the Government. Prior to submission, the contractor 4 0 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t HIL-H-L18267 13 = 7777706 OL127L167 O 1 MIL-H-48269 (PA) shall inspect the sampl
25、e to the degree necessary to assure that it conformsto the requirements of the contract and submit a record of this inspectlon with the sample. A sample containing known defects will not be submitted unless specifically authorized by the Contracting Officer (see 6.1). 4.2.2 Inspections to be perform
26、ed. The sample will be subjected by the Government to any or all of the examinations or tests specified in 4.3 and 4.4 of this specification and any or all requirements of the applicable drawings. any of the applicable requirements, the first article quantity shall be rejected. The Government reserv
27、es the right to terminate its inspection upon any failure of a sample to comply with any of the stated requirements. 4.2.3 Rejection. If any sample fails to comply with 4.3 Inspection Provisions 4.3.1 Lot formation. A lot shall consist of one or more batches of molding powder produced by one manufac
28、turer in accordance with the same specification or same specification revision under one continuous set of operating conditions. Each batch shall consist of that quantity of molding powder that has been subjected to the same unit chemical or physical mixing process intended to make the final product
29、 homogeneous. The product shall be submltted for inspection in accordance with MIL-STD-105. The criteria and procedures for the assignment of lot numbers shall be in accordance with MIL-STD-1168. 4.3.2 Examinatlon. Sampling plans and procedures for the following classifications of defects shall be i
30、n accordance with MIL-STD-105 (ABC-STD-105). Contractors sampling plans, if used, shall be approved by the Government and shall provide as a minimum, the protection afforded the Government by the sampling plans in MIL-STD-105. Continuous sampling plans in accordance with MIL-STD-1235 may be used if
31、approved by the procuring activity. Also, at the option of the procuring activity, AQLs and sampling plans may be applied to the individual characteristics listed, uslng an AQL of 0.40 percent for each major defect and an AQL of 0.65 percent for each Minor Defect. 5 Provided by IHSNot for ResaleNo r
32、eproduction or networking permitted without license from IHS-,-,-MIL-H-42b9 13 m 999790b 0427470 7 U MIL-H-48269 (PA) 4.3.2.1 Box or carton priorto.closing (see dwg. 7548644 and 7548645). Categories Defects Method of Inspection Critical: None defined Major: AQL 0.65 Percent 101. Foreign matter.Visua
33、l 102. Liner pierced or tornVisual 103. Liner improperly closedVisual 201. Type of liner incorrect,.Visual Minor : AQL 0.65 percent 4.3.2.2 Sealed boxes (see dwg. 7548644). Categories Defects Critical: None defined. Method of Inspection Ma j or : 101. AQL 0.65 percent Top improperly assembled . Visu
34、al/ Manual 102. Box damaged Visual 103. Lot number misleading or unidentifiable .Visual 104. Strapping missing, broken, or loose .Visual/ Manual Minor : AQL 1.00 percent 201. Strapping improperly assembled.Visual/ Manual 202, Marking misleading or unidentifiable .Visual 4.3.2.3 Sealed fiberboard car
35、ton (see dwg. 7548645). Categories De fe ct S Code No. (see 6.2) O1001 01002 O1003 01004 Code No. 02001 02002 02003 02004 lr 02005 02006 Method of Code No. Inspect ion Crttical: None defined. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- t MIL-H
36、-42b7 13 W 779770b OY27471 9 W I MIL-B-48269 (PA) x Major: AQL 0.40 percent 102. Lot number. .misleading or 101. Assembly torn or pierced. . Visual O3001 unidentifiable8isual 03002 Minor: AQL 1.50 percent 201. Stitches missing or loose.Visual 03003 202. Marking misleading or unidentifiable.,.,Visual
37、 03004 203. Banding strips missing, broken or improperly applied . Visual/Manual 03005 4.3.3 Sampling for test 4.4.1 through 4.4.5. Approximately 500 grams of molding powder shall be selected from each batch to be sampled using ASTM Procedures E300-70 for solids. Samples shall be selected for inpsec
38、tion in accordance with MIL-STD-1235, CSP-1 Plan, Inspection Level II, AQL 6.5%. If any sample fails to meet any test requirement the batch represented by the sample shall be rejected. All batches produced between the time that the last batch was tested and accepted and the batch which failed shall
39、be tested in accordance with the applicable methods given in paragraph 4.4, If any of these batches fail to meet any of the test requirements, that batch shall also, be rejected. In addition, after any failure of a batch the contractor will return to 100% inspection until successive batches are acce
40、pted as required by MIL-STD-1235. The classification and code number shall be as given in Table I. TABLE I CLASSIFICATION OF DEFECTS Category Defect Code No. 04001 Bulk Density Ma j or Vola t i 1 e s Major O5001 Vacuum Stability Test Maj or 07001 Compos it iqn Ma j or 06001 Granulation Maj or . o800
41、1 4.3.4 Inspection Equipment. The government reserves the right to inspect the contractors equipment and determine that he has available and utilizes correctly, measuring and test o 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-482b9 13 m 7
42、97990b 0427472 O m r MIL-H-48269 (PA) T equipment of the required accuracy and precision and that the instruments are of the proper type range to make measurements of the required accuracy. .Commercial inspection equipment, shall be employed where applicable for all tests and examinations specified
43、in 4.3 and 4.4. The contractor is responsible for assuring proper calibration procedures are followed. Government approval of all inspection equipment is required prior to its use for acceptance purpose. 4.4 Test Methods and Procedures 4.4.1 Bulk density 4.4.1.1 Apparatus. A plywood box having insid
44、e dimensions 4 by 4 by 4 inches, padded inside on top and bottom with 1/4 inch foam rubber, and having a hole in a hinged top large enough to fit a 250 ml graduated cylinder. gram portion of the sample into a 250-ml graduated cylinder. Enclose the cylinder in the box. Lift the protruding end of the
45、cylinder until the bottom flange of the cylinder contacts the top of the box. Drop the cylinder. Again lift and drop the cylinder until 20 drops have been made at the rate of about one per second. Read the volume of the compressed powder in the cylinder. Calculate bulk density in grams per cubic cen
46、timeter as follows: 4.4.1.2 Procedure. Pour an-accurately weighed i80 Bulk density = A B where : A = weight of the powder in the cylinder, in grams B = volume of the compressed powder, in cubic centimeters 4.4.2 Volatiles. Transfer approximately 30 grams of the sample to a pre-dried accurately weigh
47、ed 100 mm by i5 mm Petri dish and determine the weight of the dish and contents to the nearest milligram. Place the dish in a vacum oven maintained at 100C and heat under vacuum for two hours. Place the dish in a desiccator and let it 8 o Provided by IHSNot for ResaleNo reproduction or networking pe
48、rmitted without license from IHS-,-,-.I MIL-H-48269 13 997790b 0427q73 2 W 1 MIL-H-4 8269 (PA) - h cool to room tempera Ure. Weigh the dish and determine the loss in weight(1 f . Calculate the volatiles content as as follows: Percent volatiles = .A x.100 - B where: A = loss in weight, in grams, to t
49、he nearest milligram B = original weight of the sample, in grams, to the nearest milligram (1) Save the dried sample for use in the composition determination. 4.4.3 Composition (Caution: see 6.5) 4.4.3.1 Binder. Crush the dried sample from the volatiles determination with an agate mortar and pestle so that the entire sample passes easily through a No. 30 U.S. Standard sieve. Blend the screened sample to ensur
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1