1、- MIL-P-63Lt4A 13 7779706 0350737 1 H s-37-ots n MIL-P-6 3448A (AR) 29 Februars 1984 SUPERSEDING MIL-P-63448 (AR) 26 May 1981 1 MILITARY SPECIFICATION PROJECTILE, 105MMf HEAT-T-MP, M456A2 SPIKE AND CAP ASSEMBLY This specification is approved for use by the US Army Armament, Munitions and Chemical Co
2、mmand, and is available for use by al1 Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification contains requirements and provides quality assurance provisions for the fabrication and packing of the spike and cap assembly for HEAT-T-MP, M456A2 Projectile. 2. APPLICABLE
3、DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards, Unless 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 t
4、his specification to the extent specified herein. SPEC1 FICATIONS MI LI TARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for FEDERAL TT-C- 4 9 O - Cleaning Methods and Pretreatment of Surf aces For Organic Coatings FSC 1315 I 1 Beneficial comments (recommen
5、dations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Arm Armament Research and Development Center, Attn. DRSMC-QA, Dover, New J%rsey 07801 by using the self-addressed Standardization Document Improvement Proposal (
6、DD Form 1426) appearing at the end of this document or by letter. THIS DOCUMENT CONTAINS -.ZL PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-6344A L3 b 0350740 W MIL-P-6 3448A (AR) STANDARDS c: MILITARY MIL-STD-105 - Sampling Procedures
7、 and Tables For Inspections By Attributes MIL-STD-1169 - Packaging, Packing and Marking For Shipment of Inert Ammunitions Components 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this specification to
8、 the extent specified herein. DRAWINGS U.S. ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) 9327312 - Packing and Marking for Box, Fiberboard, 9323913 - Spike 9335940 - Spike and Cap Assembly For Spike and Cap Assembly or Spike Assembly M456A2 (Copies of specifications, standards, handbooks, dr
9、awings, and publica ions required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the Contracting Officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified
10、herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. ANSI-B46.1 - Surface Texture. (Application for copies should be addressed to the American National Standards Institute (ANSI), 1430 Broadway, New York, NY 10018. ) ASTM Methods
11、 - American Society for Testing and Materials E8 - Tension Testing of Metallic Materials E10 - Brinell Hardness of Metallic Materials, B117 Salt Spray (Fog) Testing Test for 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-6344A 33 W 9949906 0
12、350743 T W - MIL-P-63 4 48A (AR) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Phila., PA 19103. ) O 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text
13、 of this specification shall take precedence. 3. REQUIREMENTS 3.1 General. Materials, parts and assemblies shall comply with the requirements specified on the applicable drawings, referenced specifications and the following: 3.2 Heat treatment or stress relief. The heat treatment or stress relief ap
14、plied shall be uniform throughout each lot of components and shall be so conducted as to produce in each component the mechanical properties specified on the applicable component drawing, 3.2.1 Cold chapinq (if applicable). Cold shaping shall be so accomplished as to produce the required mechanical
15、properties in the metal parts. After cold work, the metal parts shall be stress relieved at the time and temperature specified on the applicable drawing to achieve stress relief and still meet the required mechanical properties. 3.3 Protective coatinq. Protective coating shall be in accordance with
16、the applicable drawings and specifications. When protective coating is required by component details, finish requirements will apply to all indicated surfaces of the component regardless of contour configuration. Salt spray testing shall be in accordance with the applicable drawings. 3.4 Painting. P
17、ainting shall comply with the requirements on the applicable drawings. All paint and marking shall be dry to the touch before testing and packing for shipment. 3.5 Process description and controls. The contractor in accordance with the contract provisions-shall make available a written description o
18、f the specified production process and process controls, determined by the Government as crucial that are to be used in the production of the first-article sample (see paragraph 4.3.4) 3.6 Structural integrity. There shall be no breakup or deformation of the spike during any proving ground test cond
19、ucted. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-6344BA II3 7777906 0350742 II 9 MIL-P-63448A (AR) 3.7 First article inspection. This specification contains technical provisions for first article inspection. Requirements for the submiss
20、ion of the first article samples by the contractor shall be as specified in the contract. 3.8 Workmanship. The requirements for workmanship are as specified on the applicable drawings, referenced specifications and the following: 3.8.1 Metal defects 3.8.1.1 Components. All components, and component
21、cavities I shall be free from cracks, splits, cold shuts, inclusions, pipes, , porosity, bursts, folds, seams, and other metal defects. 3.8.1.2 Component cavities. In addition to 3.8.1.1 all component cavities shall be free of scale, fins, burrs, draw marks, laminations, imbedded foreign matter, pit
22、s, craters, and I sharp edges. 3.8.2 - Burr. No component shall have a burr. 3.8.3 Foreign matter. All parts and assemblies shall be free of dirt, chips, oil, grease, rust, corrosion or other foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsiblity for inspection and standard quality assura
23、nce provisions. Unless otherwise specified herein or in the contract, the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specification. 4.2 Classification of inspections. The following types of inspections shall be conducted on this item: a. First Article Inspection
24、b. Quality Conformance Inspection 4.3 First article inspection 4.3.1 Submission. The contractor shall submit a first article sample designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The first article sample shall consist of the following sample quantities a
25、s indicated. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63q4A 13 = 777770b 0350743 3 MIL-P-63448A (AR) Part Description * Spike (Complete including paint) Draw i nq s 9323913 Quantity 35 Spike (complete excluding paint) 9323913 5 4.3.2 I
26、nspection to be performed, See MIL-A-48078 and Table I specified herein. 4.3.3 Rejection.-See MIL-A-48078. 4.3.4 Process description and controls. At the same time as submission of the first article samples, the contractor shall make available a written description of the production process and cont
27、rols being used in the manufacture of the item. Written descriptions shall be submitted on the following component, Spike, dwg. 9323913. Included shall be the intermediate steps in the press operation used in forming the spike, as well as intermediate process temperatures and their specific limits.
28、5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I- MIL-P-b344A 13 - 7q7770b 0350744 5 I C O -4 u u a, rn C H al rl u -4 u & u rn & .ri Eri 4 e H 3 2 ln c P A . A a 1 c, U I P I c: E r r r Y n 8 VI d Y Y Z O 5 : 3 2 U rl W a K ,. Provided by IHSNot
29、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63448A (AR) tension testing. with the yield strength or elongation requirements of the applicable drawing shall be cause for rejection of the lot represented. 4.4.3.1.2.2 Stress relieved lots. Two spikes, one of th
30、e hardest and one of the softest, as determined by the hardness test from the first twenty-five spikes, shall be subjected to this test. On tangentially transverse specimens the elongation shall be . recorded for information only. When it has been determined that the . mechanical properties comply,
31、the furnace temperature and time will be established and this temperature and time shall be maintained throughout each stress relief lot. temperature shall be 700 degrees fahrenheit with a minimum soak time of 30 minutes. Furnace temperature and time will be recorded every hour to assess adequate co
32、ntrol of the stress relief equipment. The accuracy of temperature measuring and controlling instruments shall be checked each eight hours by an independent method. Failure of any tension test specimen to comply with mechanical properties requirement of the applicable drawing shall be cause for rejec
33、tion of the lot. Failure of any tension test specimen to comply e The minimum allowable furnace 4.4.3.1.2.3 Miscellaneous. Samples for tension test of miscellaneous heat treatment or stress relieved lot of spikes shall be selected and tested in accordance with 4.4.3.1.2.1 or 4.4.3.1.2.2 as applicabl
34、e. Failure of one or more tension test specimens to comply shall be cause for rejection of the lot of components represented by the failing specimens. On tangentially transverse specimens the elongations shall be for information only. 4.4.3.2 Spike sectional inspection. To determine conformance of t
35、he spike, after final finishing two (2) samples shall be inspected from each shifts production as per 4.5.2. The samples shall be taken one from the middle of the work shift and one from the end of the work shift. An additional sample shall be taken, if any change to the production process is made,
36、directly after the change is made. Failure of any sample topcomply with the requirements of the applicable drawing and specification referenced thereon shall be cause for rejection of the product produced subsequent to the last inspection. twenty-five samples listed in Table I shall be assembled int
37、o complete rounds and be ballistically tested to determine compliance with para. 3.6. Failure of any sample to comply with 3.6 shall be cause for rejection of the first article. See para. 4.5.3. 4.4.3.3 First article ballistic test (excess pressure). The 16 Provided by IHSNot for ResaleNo reproducti
38、on or networking permitted without license from IHS-,-,- MIL-P-b344A 13 = 7777906 0350755 T m 3- - MIL-P-63448A (AR) 4.4.4 Inspection equipment. The inspection equipment required to perform the examinations and tests prescribed herein are described in the “Paragraph Reference/Inspection Method colum
39、n in the tables starting with paragraph 4.4.2.1 The contractor shall submit for approval inspection equipment design in accordance with the terms of the contract. See Section 6 of MIL-A-48078 and Section 6.3 herein. 4.5 Test method and procedures 4.5.1 Mechanical properties. The minimum mechanical p
40、roperties requirements shall apply throughout the component unless otherwise designated. The number of specimens and their location are for the convenience of the contractor and government and shall not restrain the contractor or government from testing additional specimens at other locations to det
41、ermine that properties of the components conform to drawing requirements. 4.5.1.1 Hardness. The Brinell hardness test shall be made on the large outside diameter of the spike. A reading shall be taken at one location. Prior to performing the test, the area in which the reading is to be taken shall b
42、e cleaned of scale and other foreign matter by grinding a flat of nominal depth 0.015 inches on the spike surface. The test shall be performed using equipment and procedure prescribed by ASTM Method Elo. 4.5.1.2 Tension test From the sample provided by 4.4.3.1.2.1, 4.4.3.1.2.2, or 4.4.3.1.2.3, two (
43、2) longitudinally tension test specimens conforming the largest obtainable round specimen prescribed by ASTM Method E8 shall be taken 180 apart from the stem portion of each spike (see Figure 1). In addition, two (2) transverse tension test specimens conforming as closely as possible to the largest
44、obtainable round specimen shall be taken 180 apart in a tangentially transverse direction at the midpoint of the flange area of each spike (see Figure 1). Yield strength shall be determined by the offset method using a limiting set of 0.1 percent offset. The tension test shall be performed utilizing
45、 equipment and procedures prescribed by ASTM Method E8. 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Q O O MIL-P-6344A 13 W 777770b 035075h L = MIL-P-63448A (AR) F T / / I I - I I I I I I I I i 1 I O Lo - t t- ul LLJ I- W 7w L- rn z O I- c) O 1
46、 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i e 320- * 50 M MIL-A-63448A (AR) “t-t- I, 2 5 $ * -50 O MIN -t -4 q (2.75) I -I t I FIG 1.B SIZE OF TENSILE TEST SPECIMENS 19 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
47、hout license from IHS-,-,- MIL-P-b3LILI8A 13 77779Ob 0350758 5 MIL-P-63448A (AR) 4.5.2 -_-_- Sectional Inspection. - The samples taken in accordance with 4.4.3.2 shall be cut in half along a center line of the spike. Surface finish shall be determined by a visual inspection and at the same time blen
48、d of contour and angle at forward inside basic diameter (evidence of steps not permitted) shall also be examined. 4.5.3 I- Ballistic test. The first article ballistic test shall be conducted at a government proving ground in accordance with the applicable acceptance test procedure. The sample cartri
49、dges shall be inert loaded and fired from a M60 tank series. Photographic equipment will be set up near the muzzle in such a manner as to record the integrity of the spike. The propellant charge will be adjusted to obtain a chamber pressure of 70,000 psi (482.6 MPa) to 73,900 (509.5 MPa). The cartridg
