1、INCH-POUND MIL-DTL-50648B 05 October 2005 SUPERSEDING MIL-D-50648A 23 April 1991 DETAIL SPECIFICATION DELAY ELEMENT, CARTRIDGE, M75 ASSEMBLY This specification is approved for use by all Departments and Agencies of the Department of Defense. This specification remains inactive for new design. It may
2、 still be used for replacement purposes. 1. SCOPE 1.1 Scope. This specification covers the requirements for the M75 Cartridge Delay Element (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section do
3、es not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in
4、 sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the is
5、sues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-B-550 Barium Chromate MIL-A-2550 Ammunition, General Specification for Comments, suggestions, or questions on this document should be addressed to Commander, Indian Head Division, Naval
6、Surface Warfare Center, Technical Information Branch (Code 4230), 101 Strauss Avenue, Indian Head, Maryland 20640-5035, or emailed to amanda.pennnavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/a
7、ssist.daps.dla.mil/. AMSC N/A FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproductio
8、n or networking permitted without license from IHS-,-,-MIL-DTL-50648B 2 MIL-B-51092 Boron, Amorphous, Powder MIL-A-8625 Anodic Coating for Aluminum and Aluminum Alloys DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810 Environmental Test Methods and Engineering Guidelines (Copies of this document are avail
9、able online at http:/assist.daps.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawings, and publications. The following Government drawings form a part of this specification to the extent sp
10、ecified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. OTHER GOVERNMENT DOCUMENTS WS 21535 Ignition Devices, (Percussion), PVU-1/A DRAWINGS NAVAL ORDNANCE STATION (CAGE Codes 19200 and 19203) DL11730545 Delay Element, Cartridge, M75, Assembly 851AS110
11、 Ignition Device PVU-1/A 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, Naval Surface Warfare Center, Attn: Tec
12、hnical Information Branch (Code 4230), Indian Head, MD 20640-5035.) 2.3 Non-Government publications. The following documents 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. AMERICA
13、N SOCIETY FOR QUALITY ANSI/ASQ A8402 Quality Management and Quality Assurance - Vocabulary ANSI/ISO/ASQ Zl.4 Sampling Procedures and Tables for Inspection by Attributes (Copies of these documents are available online at http:/www.asq.org/ or from the American Society for Quality, PO Box 3005, 611 E.
14、 Wisconsin Ave., Milwaukee, WI 53201-4606.) Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50648B 3 AMERI
15、CAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E1742 Standard Practice for Radiographic Examination (Copies of this document are available online at http:/www.astm.org/ or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959
16、.) 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 exemption has been obtained. 3. REQUIR
17、EMENTS 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 documents. The M75 delay element covered by this specification shall be manufactured in accordance with DL1173
18、0545 and all documents listed thereon. 3.3 Materials. 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 Na
19、vy design activity prior to manufacture. When 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, Del
20、ay Charge and the output material charge are considered 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 devic
21、e. The ignition device shall be furnished from lots manufactured within the preceding 24 months or recertified within the preceding 12 months. The ignition device shall be manufactured per Drawing 851AS110 and accepted per WS 21535. Prior to assembly into a delay element, the ignition device shall b
22、e visually examined in accordance with 4.6.5 and 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 d
23、elay element assembly shall be radiographically examined for defects (see 4.7.3). Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
24、se from IHS-,-,-MIL-DTL-50648B 4 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 I-3.2.5 without evidence of any disintegration of the ignition device, propellant, or igniter, or derangement of any co
25、mponent (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-B-
26、51092, in the proportion and quantity fixed by the contractor to produce the ignition delay times required in table I (see 6.6.1). TABLE I. Ballistic requirements. Temperature (F) Ignition delay time (sec) Lower Upper -60 to -70 0.600 0.760 65 to 75 0.600 0.660 195 to 205 0.500 0.660 3.7 Workmanship
27、. 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 components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defect. 3.7.2 Burr.
28、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 assembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 4. VERIFICATION 4.1 Classificat
29、ion of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4) b. Quality conformance inspection (see 4.5) 4.1.1 Quality assurance terms and definitions. Reference shall be made to ANSI/ISO/ASQ A8402 to define the quality assurance t
30、erms used. 4.2 Inspections. Inspections shall be in accordance with MIL-A-2550 and ASTM E1742. Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproduction or networking permitted
31、without license from IHS-,-,-MIL-DTL-50648B 5 4.3 Inspection conditions. Unless otherwise specified in the contract or purchase order (see 6.2), inspection conditions shall be as follows: a. Temperature: Room ambient 20to 25C (68to 77F) b. Altitude: Sea level c. Humidity: 50 percent relative, maximu
32、m d. Atmospheric: 14.7 psia 4.4 First article inspection. At the 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, t
33、o be tested as indicated in table II, and 10 sets of unassembled 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. All parts
34、and materials, including packaging and packing, shall be the same 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 ele
35、ments from the first production lot thereafter shall be tested in 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. Paragraph Test Sample size Type of test
36、Requirement Test Destructive Nondestructive 3.4.2 4.7.2 Protective finish 23 Delay bodies X - 23 Ignition device retainers X - 3.5.2 4.7.4 Vibration 12 (Fr. Ballistics sample) - X 3.6 4.7.5 Function tests 21 X - 4.4.1 Examination, tests, and facility. After provisional acceptance at source, the samp
37、le shall be inspected for all requirements of the drawings and specifications at a Government laboratory or other such facility specified in the contract (see 6.2). 4.4.2 Temperature conditioning for ballistic test. The sample shall be temperature conditioned and tested to determine compliance with
38、3.6.1.2. The sample for firing shall be conditioned to table III. TABLE III. Temperature conditioning. Temperature (F) Not vibrated Vibrated -60 to -70 3 4 65 to 75 3 4 195 to 205 3 4 4.4.3 First article failure. Failure of the sample to comply with the requirements of the drawings and specification
39、s shall result in first article sample disapproval. 4.5 Quality conformance inspection. Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproduction or networking permitted without
40、 license from IHS-,-,-MIL-DTL-50648B 6 4.5.1 Lot. 4.5.1.1 Submission of product. The product shall be submitted in accordance with ANSI/ASQ Z1.4. 4.5.1.2 Lot size. Unless otherwise specified (see 6.2), the production lot size shall be not more than 600. 4.5.2 Examination and tests. The quality confo
41、rmance sample shall be subjected to the examinations of 4.6 and all the test procedures of 4.7 except for 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 perc
42、ent examination shall be performed for all critical defects. Examination for major or minor defects shall 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
43、matter. When compliance is in doubt as a result of visual inspection, the characteristic shall be measured or gaged to determine acceptability. All nonconforming items shall be rejected. 4.6.1 Delay Element, M75, Assembly Drawing 11730545. Characteristic Defect Method of Inspection Critical 1 Any pa
44、rt missing X-ray/Visual 2 Improper assembly X-ray/Visual 3 Ignition device not properly seated X-ray/Visual 4 Ignition device uncrimped or seal missing Visual 5 Marking missing incorrect or illegible Visual Major 101 Concentricity of head with body Gage 102 Junction of delay body, gasket and ignitio
45、n device retainer not properly sealed Visual 103 Metal defective Visual 104 Protective finish inadequate or defective Visual 105 Burr Visual 106 Foreign matter present Visual Minor 201 Total length, max Gage 202 Diameter of body, max Gage Source: http:/assist.daps.dla.mil - Downloaded: 2005-10-12T06
46、:57ZCheck the source to verify that this is the current version before use.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50648B 7 4.6.2 Body Delay, Drawing 8594081, covering a detail of Drawing 11730545. Characteristic Defect Method of Insp
47、ection Critical 1 Flash hole missing or obstructed Visual 2 Metal defective Visual Major 101 Pitch diameter, external thread, min Gage 102 Major diameter, external thread, min Gage 103 Concentricity of body with pitch diameter of thread Gage 104 Diameter of cavity, max Gage 105 Diameter of head, min
48、 Gage 106 Diameter of flash hole Gage 107 Diameter of thread relief Gage 108 Length from cavity face to shoulder of head diameter Gage 109 Protective finish inadequate or defective Visual 110 Thread damaged or not full Visual 111 Burr Visual 112 Foreign matter present Visual Minor 201 Pitch diameter
49、 of external thread, max Gage 202 Diameter of wrench hole Gage 203 Diameter of thread pilot Gage 204 Diameter of cavity, min Gage 205 Diameter of head, max Gage 206 Diameter of step rear of head Gage 207 Depth of wrench hole Gage 208 Depth to base of cavity Gage 209 Total length Gage 210 Length of step rear of head Gage
