1、MIL-Dd0572B 16 December 1994 SUPERSEDING 23 April 1991 MIL-Dd0572A MILITARY SPECIFICATION DELAY ELEMENT, CARTRIDGE, M28 ASSEMBLY mis specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the
2、M28 Cartridge Delay Element (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents a
3、re those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-B-550 Barium Chromate MIL-A-2550 Ammunition, General Specification for MIL-A-8625 Anodic Coating for Alum
4、inum and Aluminum Alloys MIL-B-5 1092 Boron, Amorphous, Powder I 1 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Indian Head Divison, Naval Surface Warfare Center, 101 Strauss Avenu
5、e, Standardization Branch (8420), Indian Head, Maryland 20640-5035, by using the Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided
6、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-60572B 9997906 1995918 686 MIL-D-60572B STANDARDS MILITARY MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD- 1 O9 Quality Assurance Terms and Definitions MIL-STD-453 Inspect
7、ion, Radiographic MIL-STD-8 10 Environmental Test Methods and Engineering Guidelines (Unless otherwise indicated, copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19 1 1 1-5094.) 2.1
8、.2 Other Government documents, drawings, and publications. The following Government drawings form a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2). DRAWINGS Naval Surface Warfare Center (CAGE Codes 19200
9、 and 19203) DL1052 1650 Delay Element, Cartridge, M28, Assembly 8826728 Ammunition, Container, Metal, M21 for Delay Element, M5 or M8 8826729 Box, Packing, Ammunition, for Delay Element, M5 or M8 in Metal Container M21 (Application for copies should be addressed to: Commander, Indian Head Division,
10、Naval Surface Warfare Center, Data Control Branch (Code 8410), 101 Strauss Avenue, Indian Head, MD 20640-5035.) 2.2 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,
11、 however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a first article sample shall be subjected to first article inspection (see 4.4, 6.2, and 6.3). 3.2 Conformance to d
12、ocuments. The M28 delay element covered by this specification shall be manufactured in accordance with DL10521650 and all documents listed thereon. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-bO572B 9999906 L9959L9 512 MIL-D-60572B 3.3 Ma
13、terials. All materials used in the manufacture of the cartridges shall conform strictly to the specifications referred to on the respective drawings unless specific approval in writing covering a departure therefrom has been obtained from the cognizant Navy design activity prior to manufacture, When
14、 alternate materials or methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. 3.4 Components. 3.4.1 Primary components. For the purpose of this specification, the PVU-1/A Ignition Device, Delay Charge, and output material charge are con
15、sidered primary components. Only primary components from a single lot shall be used in a production lot of cartridges; however, one primary component production lot may be used in more than one cartridge production lot (see 6.7). 3.4.1.1 Ignition device. The ignition device shall conform to the appl
16、icable drawing and reference specification. Only ignition devices from lots manufactured within the last 24 months or recertified within the last 12 months shall be used in these units. Prior to assembly into a delay element, the ignition device shall be visually examined in accordance with 4.6.5 an
17、d radiographically examined for defects as specified in 4.7.1. 3.4.2 Protective finish. The finish of each component part shall be in accordance with MIL-A-8625 and the applicable drawing (see 4.7.2). 3.5 Assembly. 3.5.1 Radiographic examination. Each delay element assembly shall be radiographically
18、 examined for defects (see 4.7.3). 3.5.2 Vibration. The assembled delay element shall withstand vibration as prescribed in MIL-STD-810, Method 514.3, Test Procedure I, Test Condition 1-3.2.5 without evidence of any disintegration of the ignition device, propellant, or igniter, or derangement of any
19、component (see 4.7.4 and 6.2). 3.6 Functional requirements. 3.6.1 Delay element performance. 3.6.1.1 Misfires. The ignition delay element shall not fail to fire. 3.6.1.2 Ballistics. The ignition delay charge shall consist of barium chromate, as specified in MIL-B-550, and boron, as specified in MIL-
20、B-51092, in the proportion and quantity fixed by the contractor to produce the ignition delay times required in table I (see 6.6.1). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-60572B Temperature (O F) -60to -70 65 to 75 195 to 205 TABLE
21、I. Ballistic reauirements. Lower upper 0.425 0.575 0.425 0.475 0.350 0.475 Ignition delay time (sec) 3.7 Workmanship. Delay elements shall be free of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the device. 3.7.1 Metal defects. All
22、 components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defect. 3.7.2 Burr. No part shall have a burr which might interfere with the assembly or function of the item or which might be injurious to personnel handling the item. 3.7.3 Foreign matter. No part or a
23、ssembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (exam
24、inations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor 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
25、 the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements (see 6.2). 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The i
26、nspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to
27、 the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements; however, this does not authorize submission of known defective material, either indicated or actu
28、al, nor does it commit the Government to accept defective material. 4.1.2 Quality assurance terms and definitions. Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
29、L-D-b0572B 99999Ob L99592L 170 = Paragraph Requirement Test 3.4.2 4.7.2 3.5.2 4.7.4 3.6 4.7.5 MIL-D-60572B Type of test Destructive Nondestructive Test Sample size Protective finish 23 Delay bodies X - 23 Ignition device X - Vibration 12 from Ballistics - X retainers sample Function tests 21 X - 4.1
30、.3 Inspections. Inspections shall be in accordance with MIL-A-2550 and MIL-STD-453. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. b. First article inspection (see 4.4) Quality conformance inspection (see 4.5) 4.3 Inspection conditions.
31、Unless otherwise specified in the contract or purchase order (see 6.2), inspection conditions shall be as follows: a. b. Altitude: Sea levei c. d. Atmospheric: 14.7 psia Temperature: Room ambient 20“ to 25“ C (68“ to 77“ F) Humidity: 50 percent relative, maximum 4.4 First article inspection. At the
32、beginning of regular production, the contractor shall submit a first article sample to a Government approved facility for evaluation. The sample shall consist of 23 delay bodies, 23 ignition device retainers, 21 units for ballistics, to be tested as indicated in table II, and 10 sets of unassembled
33、components (including explosive components) for visual and dimensional examination. The first article sample shall be manufactured using the same materials, equipment, processes, and procedures as used in regular production. Ail parts and materials, including packaging and packing, shall be the same
34、 as used for regular production and shall be obtained from the same source of supply. When it becomes necessary to make a change in either the ignition device, propellant, or igniter lot after initial production, 12 assembled delay elements from the first production lot thereafter shall be tested in
35、 accordance with 4.7.5. The Government reserves the right to require new first article samples until such time as an acceptable sample is submitted (see 6.3). TABLE II. First article inspection. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D
36、-60572B 9999906 I1995922 007 Temperature (OF) MIL-D-60572B Not vibrated Vibrated 4.4.1 Examination, tests, and facility. After provisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or other such facility spe
37、cified in the contract (see 6.2). -6Ot0 -70 3 4.4.2 Temperature conditioning for ballistic test. The sample shall be temperature conditioned and tested to determine compliance with 3.6.1.2. The sample for firing shall be conditioned to table III. 4 TABLE III. Temperature conditioning. II 65 to 75 I
38、3 I 4 II II 195 to 205 I 3 I 4 II 4.4.3 Rrst article failure. Failure of the sample to comply with the requirements of the drawings and specifications shall result in first article sample disapproval. 4.5 Quality conformance inspection. 4.5.1 Lot. 4.5.1.1 Submission of product. The product shall be
39、submitted in accordance with MIL-STD-105. 4.5.1.2 Lot size. Unless otherwise specified (see 6.2), the production lot size shall be not more than 1200. 4.5.2 Examination and tests. The quality conformance sample shall be subjected to the examinations of 4.6 and ail the test procedures of 4.7 except f
40、or 4.7.4. 4.6 Examination. All delay elements and components shall be examined visually and radiographically and characteristics defined in accordance with the applicable drawings. One hundred percent examination shall be performed for ail critical defects. Examination for major or minor defects sha
41、ll be performed on a defect basis in accordance with the classification of defects. Four power (4X) magnification may be used in performing visual examination for such defects as burrs and foreign matter. When compliance is in doubt as a result of visual inspection, the characteristic shall be measu
42、red or gaged to determine acceptability. All nonconforming items shall be rejected. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-b0572B ? 90b 1995923 T43 ? MIL-D-60572B 4.6.1 Delay Element, M28, Assembly Drawing 10521650. Characteristic De
43、fect Critical 1 Any part missing 2 Improper assembly 3 4 5 Ignition device not properly seated Ignition device uncrimped or seal missing Marking missing incorrect or illegible Major 101 102 103 Metal defective 104 105 Burr 106 Foreign matter present Concentricity of head with body Junction of delay
44、body, gasket and ignition device retainer not properly sealed Protective finish inadequate or defective Minor 20 1 Total length, max 202 Diameter of body, max 4.6.2 Body Delay, Drawing 8594081, covering a detail of Drawing 10521650. Critical 1 2 Metal defective Flash hole missing or obstructed Major
45、 101 102 103 104 105 106 107 108 109 110 111 112 Pitch diameter, external thread, min Major diameter, external thread, min Concentricity of body with pitch diameter of thread Diameter of cavity, max Diameter of head, min Diameter of flash hole Diameter of thread relief Length from cavity face to sho
46、ulder of head diameter Protective finish inadequate or defective Thread damaged or not full Burr Foreign matter present Method of Inspection X-ray/Visual X-ray Nisual X-ray/Visual Visual Visual Gage Visual Visual Visual Visual Visual Gage Gage Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Vi
47、sual Visual visual Visual 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-bO572B W 0b L592V 98T Minor 201 202 203 204 205 206 207 208 209 210 21 1 212 213 214 215 MIL-D-60572B Pitch diameter of external thread, rnax Diameter of wrench hole Di
48、ameter of thread pilot Diameter of cavity, min Diameter of head, max Diameter of step rear of head Depth of wrench hole Depth to base of cavity Total length Length of step rear of head Length of thread pilot Width of thread relief Location of wrench hole Radius or chamfer missing or incorrect Surfac
49、e finish improper Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual 4.6.3 Gasket, Aluminum, Drawing 8594082, covering a detail of Drawing 10521650. Critical None defined Major 101 Diameter, outside, min 102 Diameter, inside, max 103 Metal defective 104 Burr 105 Foreign matter present Minor 20 1 Diameter, outside, rnax 202 Diameter, inside, min 203 Thickness 204 Surface finish improper Gage Gage Visual Visua
