1、 INCH-POUND MIL-DTL-14824C(AR) w/AMENDMENT 3 5 September 2008 SUPERSEDING MIL-DTL-14824C(AR) w/AMENDMENT 2 27 March 2008 DETAIL SPECIFICATION PROJECTILE 155MM, HE, METAL PARTS ASSEMBLY, M107 This specification is approved for use by the U.S. Army Armament Research Development and Engineering Center
2、(ARDEC), and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for the manufacturing and assembly of the metal parts for Projectile, 155MM, HE, M107 (see 6.1). AMSC N/A FSC 1320 DISTRIBUTION STATEMENT A. Appr
3、oved for public release; distribution is unlimited. Comments, suggestions, or questions on this document should be addressed to the Commander, U.S. Army ARDEC, ATTN: AMSRD-AAR-QES-E, Picatinny, NJ 07806-5000 or emailed to ardecstdznconus.army.mil. Since contact information can change, you may want t
4、o verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. Inactive for new design after 3 February 1997 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 22. APPLIC
5、ABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made t
6、o assure the completeness of this list, document users are cautioned that they must meet all requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications,
7、standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS TT-C-490 - Chemical Conversion Coatings and Pretreatments for Ferrous Surfaces (Base
8、for Organic Coatings) DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1168 - Ammunition Lot Numbering and Ammunition Data Card MIL-STD-1916 - DoD Preferred Methods for Acceptance of Product (Unless otherwise indicated, Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/
9、or http:/assist.daps.dla.mil from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications form a part of this document to t
10、he extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) DRAWINGS 10535925 - Projectile, 155MM, HE, M107 Metal Parts Assembly Provided by IHSNot for ResaleNo reproduction
11、or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 310535926 Body Assembly 10535927 Body 7548993 - Blank, Rotating Band 9280419 - Envelope Drawing, Ultrasonic Inspection Equipment, 155MM, M107 9280420 - Ultrasonic Test Calibration Standard 155MM, M107 Projectile 92
12、80429 - Rotating Band Seat Tester. (Copies of these drawings may be requested online at Pica.drawing.requestconus.army.mil or from U.S. Army ARDEC, ATTN: AMSRD-AAR-AIS-TD, Picatinny, NJ 07806-5000.) 2.3 Non-Government Publications. The following documents form a part of this document to the extent s
13、pecified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL (ASTM) ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM E8 - Standard Test Method for Tension Testing of Metallic Materials ASTM E
14、10 - Standard Test Method for Brinell hardness of Metallic Materials ASTM E103 - Standard Test Method for Rapid Indentation Hardness Testing of Metallic Materials (Copies of ASTM standards are available online at http:/www.astm.org or from American Society for Testing and materials, 100 Barr Harbor
15、Drive, West Conshohocken, PA 19428-2959) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific
16、exemption has been obtained. 3. REQUIREMENTS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 43.1 First article inspection. When specified(see 6.2) a sample shall be subjected to first article inspection in accordance
17、 with 4.2. 3.2 Components and assemblies. The components and assemblies shall comply with all requirements specified on drawing 10535925. 3.2.1 Body prior to nosing. The materials, components and assemblies shall be in accordance with dwg. 10535927. 3.2.2 Body Machined (prior to band seat machining
18、and threading nose). The materials, components and assemblies shall be in accordance with dwg. 10535927. 3.2.3 Body. The materials, components and assemblies shall be in accordance with dwg. 10535927. 3.2.4 Body Assembly. The materials, components and assemblies shall be in accordance with dwg. 1053
19、5926. 3.2.5 Projectile, HE, 155MM,M107 Metal Parts Assy. The materials, components and assemblies shall be in accordance with dwg. 10535925. 3.2.6 Projectile, 155MM, HE, M107 Metal Parts Assembly Destructive Lot Acceptance. The materials, components and assemblies shall be in accordance with dwg. 10
20、535925. 3.3 Ammunition lot numbering. Ammunition lot numbers shall be assigned in accordance with MIL-STD-1168. 3.4 Mechanical properties. Heat treatment or stress relief applied shall be uniform throughout each lot of projectiles and shall be so performed and controlled as to produce in the project
21、ile the mechanical properties specified in 10535927. 3.4.1 Rotating Band. After application and subsequent removal the rotating band shall have the following mechanical properties: a.Tensile Strength -30,000 lbs per square inch (PSI) minimum b. Elongation 25 percent in one inch of gage length, minim
22、um 3.5 Projectile material defects. 3.5.1 Projectile cavity. The projectile cavity shall be free from scale, fins, burrs, draw marks, laminations, imbedded foreign matter and pits. Surface discontinuities which have a fillet or corner radius smaller than .03 inch shall be rejected. (see 6.5). Provid
23、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 53.5.2 Projectile. The Projectile, including the cavity, shall be free from cracks, splits, bursts, cold shuts, pipe, porosity, inclusions, folds, seams, and other metal defec
24、ts. 3.6 Rotating band. 3.6.1 Foreign matter on band seat. Prior to banding, the band seat shall be free from oil, grease, dirt, rust or other foreign matter. 3.6.2 Application. 3.6.2.1 Destructive. The rotating band shall be applied after final heat treatment of the body, by carefully pressing the b
25、and blank into the band seat so as to make contact with the sidewalls for a minimum of eight-tenths of the band seat depth. The band shall be applied in such a matter as not to distort the body wall. 3.6.2.2 Visual. There shall be no gap between the rotating band and the sidewalls of the band seat,
26、after the rotating band has been machined to final dimension. 3.6.3 Band seating. The diametrical clearance between the rotating band and band seat shall not exceed .006 inches, when the destructive method of testing is used or .009 inches when the non-destructive method of testing is used. 3.7 Ultr
27、asonic test. Projectiles shall be free of any discontinuities equal to or in excess of the ultrasonic inspection criteria for the respective zones. The inspection criteria are notches and holes in a standard (on dwg. 9280420) which simulate larger metal defects. Ultrasonic inspection is to be perfor
28、med in accordance with 9280419 prior to band seat and thread machining. 3.8 Interior cavity finish. The interior cavity after painting shall be free from bare spots, blisters, grease, dirt and other foreign matter. There shall be no pool of paint in the bottom of the cavity. 3.9 Workmanship. The req
29、uirements for workmanship are as follows: 3.9.1 Surface preparation. Preparation of metal surfaces shall be as specified on dwg. 10535927. Where cleaning and preparation are required by component details, the finish specified shall apply to the indicated surfaces regardless of contour configuration.
30、 3.9.2 Painting. All paint shall be dry to the touch before packing for shipment. The paint shall be considered dry when the soft tacky condition no longer exists and the paint feels firm when touched with a finger using moderate pressure. Provided by IHSNot for ResaleNo reproduction or networking p
31、ermitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 63.9.3 Burr. No part shall have a burr which might interfere with the assembly or function of the round or which might be injurious to personnel handling the item. 3.9.4 Threads. The threads shall be full and undamaged for the en
32、tire minimum length or depth as specified on dwg. 10535927. 3.9.5 Foreign matter. No part of the assembly shall contain dirt, grease, chips, rust, corrosion or other foreign matter. 3.9.6 Protection of rotating band. The machined rotating band shall be protected from being nicked, burred or otherwis
33、e damaged in subsequent handling prior to shipment. 3.10 Ballistics test. The projectile assembly shall reveal no evidence of metal parts failure. Metal parts failure shall be defined as: 3.10.1 Breakup. There shall be no loss or breakup of metal parts components in the gun bore or in flight. 3.10.2
34、 Rotating band failure. There shall be no loss or fanning of the rotating band. 3.10.3 Shearing of rotating band. There shall be no shear of rotating band as evidenced by complete lack of engraving. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
35、-DTL-14824C(AR) w/Amendment 3 74. VERIFICATION TABLE I. Requirement/Verification Cross Reference Matrix. Methods of Verification Classes of Verification N/A Not Applicable 1 Analysis 2 Demonstration 3 Examination 4 - Test A- Design Verification B- First Article C- Acceptance Section 3 Requirements D
36、escription Verification Method Verification Class Section 4 Verification N/A 1 2 3 4 A B C 3.1 First Article Test X X X X 4.2 3.2 Components and assemblies X X X X 4.3 3.2.1 Body (prior to nosing) X X X X 4.3.2.1 3.2.2 Body Machined (prior to band seat machining and threading nose) X X X X 4.3.2.2 3
37、.2.3 Body X X X X 4.3.2.3 3.2.4 Body assembly X X X X 4.3.2.4 3.2.5 Projectile, HE, 155MM,M107 Metal Parts Assy. X X X X 4.3.2.5/4.4.6/4.4.5 3.2.6 Projectile, 155MM, HE, M107 Metal Parts Assembly Destructive Lot Acceptance X X X X 4.3.2.6 3.3 Ammunition lot numbering X X X 4.3.1 3.4 Mechanical prope
38、rties X X X 4.3.2.3/4.4.2 3.4.1 Rotating band X X X 4.3.2.4/4.4.3.2 3.5.1 Projectile cavity X X X 4.3.2.1/4.3.2.4/4.3.2.5/4.4.1 3.5.2 Projectile X X X 4.4.1 3.6.1 Foreign matter on band seat X X X 4.3.2.4 3.6.2.1 Destructive X X X X 4.3.2.4/ 4.4.3.3.3 3.6.2.2 Visual X X X 4.3.2.4 3.6.3 Band seating
39、X X X 4.3.2.4/4.4.3.3 3.7 Ultrasonic Test X X X 4.3.2.2/4.4.4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 8TABLE I.Requirement/Verification Cross Reference Matrix-Continued 3.8 Interior cavity finish X X X 4.3.2.3
40、/4.3.2.5 3.9 Workmanship X X X 4.3.2.1/4.3.2.3-4.3.2.5 3.10 Ballistic Test X X X 4.3.2.6/4.4.7 4.1 Classification of verification. The verification requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 First article i
41、nspection. 4.2.1 First article quantity. First article verification shall be performed on the quantity of items as indicated in table II. 4.2.2 Inspections to be performed. The first article verification shall be performed in accordance with Table II. 4.2.3 First article rejection. If any item fails
42、 to comply with requirements, the first article sample shall be rejected. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 9TABLE II. FIRST ARTICLE INSPECTION EXAMINATION OR TEST NUMBER OF SAMPLES REQUIREMENT PARAGRAPH
43、 INSPECTION METHOD REFERENCE Projectile, 155M, HE, M107 metal parts assembly Dwg. 10535925 Examination for defects 5 3.2.5 4.3.2.5 Ballistic performance for structural integrity 40 3.10 4.4.7/4.3.2.6 Salt spray testing 5 3.2 4.4.6.1 Protective coating thickness 5 3.2 4.4.5 Body assemblyDwg. 10535926
44、 Examination for defects 5 3.2.4 4.3.2.4 Band seating 5 3.6.3 4.4.3.3 Mechanical properties rotating band 5 3.4.1 4.4.3.2 Body Dwg 10535927 Examination for defects 5 3.2.3 4.3.2.3 Yield strength and elongation test 2 3.4 4.4.2.2 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
45、thout license from IHS-,-,-MIL-DTL-14824C(AR) w/Amendment 3 10TABLE II. FIRST ARTICLE INSPECTION - Continued EXAMINATION OR TEST NUMBER OF SAMPLES REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Body (prior to band seat machining and threading nose) Dwg. 10535927 Examination for defects 5 3.2.2 4.
46、3.2.2 Ultrasonic test 5 3.7 4.4.4 Body (prior to nosing) Dwg. 10535927 Examination for defects 5 3.2.1 4.3.2.1 Blank, rotating bandDwg. 7548993 Mechanical properties 5 3.2 4.4.3.1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-14824C(AR) w/A
47、mendment 3 114.3 Conformance inspection. 4.3.1 Lot formation. Lot formation shall be in accordance with lot formation requirement of MIL-STD-1916 (Formation and identification of lots or batches). 4.3.1.1 Heat treatment inspection lot. Heat treatment inspection lots shall not exceed one mill heat of
48、 steel. Whenever a break in heat treating of eight (8) hours or more occurs or a furnace is shut down for any length of time, the heat treatment inspection lot will be terminated and a new lot shall start. Additionally, heat treatment inspection lots shall be restricted to components heat treated in the same heat treating equipment, at the same temperature, for the same length of time and in one unchanged process. When a batch type furnace is used, the heat treatment inspection lot shall be further restricted to those components heat treated at the sa
