ARMY MIL-M-48261-1977 MINES M718 M741 SYSTEM METAL PARTS《M718 M741型地雷系统金属零件》.pdf

1、MIL-M-48263 33 I 999990b 0338062 6 MIL-M-48261 (AR) 4 May 1977 METAL PARTS, MINES, M718/M741 SYSTEMS This Specification is approved for use by ARRADCOM and is avail- able for use by all Departments and Agencies of the Department of Defense. -_ 1. SCOPE - 1.1 This specificatipn.contains requirements

2、not normally coyered by the drawings and provides quality assurance pro- .risions for the fabrication and packing of the metal parts for the M718/14741 system mines. 2. APPLICABLE DOCUmNTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposals, for

3、m a part of this specification to the extent specified herein. SPECIFICATIONS MIL IT ARY MIL-A-48078 STANDARDS - Ammunition, Standard Quality Assurance Provisions, General Specifications For MI LIT ARY MIL-STD-1169 - Packaging, Packing and Marking for Shipment of Inert Ammunition Components. =PSC: 1

4、345 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Army Armament Research and Development Command, Attn. DRDAR-u 00 VI I= Y n 8 YI w Z I- 0 I 4 4 VI u T % 8 5 W U mis 8 B . d 10 D

5、 i t ? O 3 P 2 5 t g Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3 Y . MIL-M-48263 33 4Oh 0338072 7 = - n O w 5 z c U w E 2 25 Z E W t a a P el c, tt w I u) I B I ! 3 m 22 Provided by IHSNot for ResaleNo reproduction or networking permitted witho

6、ut license from IHS-,-,-Z O ea P ci c .ri O PI ci ui al e Li O ci lu rl n 5 H o O000 Cu z Q Li O m al rl s! 4 c: w rl 23 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6 cl n 8 ! 2 c, I 3 H ! N d . z 7 E$g c z O l9 W I- U a B 2 a .A 24 Provided by I

7、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-n 3 r k? ci U Y 8 Z QE a MIL-M-48263 13 m 9999906 0338086 9 YY mm c, m rl 44 O c, Cu rl 2 %I O rl 3 3 - 25 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-4826

8、3 33 W 7797706 0338087 O W MLL-M-48261 (AR) 4.4.3 Testing 4.4.3.1 Hardness (See dwg. 9276497) Major defect. - A sample of mine bodies shall be randomly selected from each lot and tested for hardness. Testing shall be performed as specified in 4.5.1 (Non-Destructive Test) . 4.4.3.2 Density of the sim

9、ulant (See dwgs. 9277743, 9277820;9277763) Majar defect. - A sample of five (5) each of the above parts shall be randomly selected from each lot of 200 or less parts of each type and tested for density. This test shall be performed in accordance with 4.5.2 (Non-Destructive Test) . 4.4.4 Inspection e

10、quipment. - Inspection equipments required to perform the inspections prescribed in this speci- fication are identified in 4.4.2.1 thru 4.4.2.11 and Test Method paragraphs herein. See 6.2 for details concerning responsibilities for inspection design and approval. 4.4.5 D-hensional control of molded

11、parts. - In place of normal sampling and inspections associated with the Classifi- cation of Defects; and after a curing time for the parts has been approved (See Note i). The Contractor may, with the approval of the Government, select a sample of three (3) parts (as molded) from each cavity to be f

12、ully inspected dimensionally to quality a new or reworked cavity for use in production. The molded parts shall carry the individual cavity identification. As a control of each cavity during production, the above quantity of parts from each cavity shall be inspected for at least the defects listed in

13、 paragraphs 4.4.2.5, 4.4.2.6 and 4.4.2.8 after continuous production of each 5,000 parts or at the end of each week, whichever occurs first. Of the three (3) samples, one (i) sample shall be the last part produced. If any defective parts are found during qualification of the cavity, the cavity produ

14、cing the defective part will not be used in production. If any defective parts are found when inspection is performed for the control of the cavity, the cavity producing the defective part shall be removed from production. Further, that portion of production since the last control check shall be ret

15、urned to the contractor for inspection for each separate type of defect according to MIL-STD-105, using an AQL of 0.40 percent for each major defect and an AQL of 0.65 percent for each minor defect. All cavities removed from production because of some fault, may after reworking, be returned to produ

16、ction providing they pass the qualification test above. The contractor may request 26 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-48261 (AR) a change of inspection frequency providing he presents objec- tive evidence to the contracting offi

17、cer to substantiate the request. Contractor design of gages and test equipment re- quired to perform the inspections listed herein shall be forwarded to Commander, ARRADCOM, Dover, New Jersey 07801, ATTN: DRDAR-QAA-I for approval prior to manufacture of equip- ment. The noted subparagraphs identify

18、those items and min- imum inspections subject to the requirements of this paragraph. NOTE 1. - In establishing a curing time, dimensionally check ten (10) parts from each cavity at periodic intervals (e.g. every 30, 60, etc. mins.) until dimensional stability is attained. The curing time will be fro

19、m the time the part comes out of the mold until dimensional stability is attained. The inspection data used in determining the curing time shall be sent to ARRADCOM, Dover, New Jersey 07801 ATTN: DRDAR- QAa-R. When a new cavity is substituted, an old cavity reworked, or the material or cycle time ch

20、anged, a new curing time shall be established and approved. 4.5 Test methods and procedures 4.5.1 Hardness. - Hardness of the mine body shall be measured by a Rockwell “C“ hardness tester. Readings shall be taken on the center of the outside wall 90 apart (total 4 readings) . 4.5.2 Density of simula

21、nt. - The sample of simulant material shall be tested for density in accordance with the procedure specified in ASTM Designation D792 - “Specific Gravity and Density of Plastics by Displacement“, method A-1 or an equivalent approved by DRDAR-QAA. 5. PREPARATION FOR DELIVERY 5.1 Preservation and pack

22、aging. 5.1.1 Level C. - The parts shall be preserved and packaged in accordance with MIL-STD-1169. 5.2 Packing. 5.2.1 Level C. - The parts shall be packed for shipment in accordance with MIL-STD-1169. 4 27 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* US. GOVERNMENT PRINTING OFFICE: 1978 - 703-122/2757 28 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-