ARMY DOD-P-63981 (10)-1996 PROJECTILE 30MM HIGH EXPLOSIVE DUAL PURPOSE M789 METAL PARTS《M789型双重用途30 mm高爆榴弹用金属部件》.pdf
《ARMY DOD-P-63981 (10)-1996 PROJECTILE 30MM HIGH EXPLOSIVE DUAL PURPOSE M789 METAL PARTS《M789型双重用途30 mm高爆榴弹用金属部件》.pdf》由会员分享,可在线阅读,更多相关《ARMY DOD-P-63981 (10)-1996 PROJECTILE 30MM HIGH EXPLOSIVE DUAL PURPOSE M789 METAL PARTS《M789型双重用途30 mm高爆榴弹用金属部件》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、DOD-P-63983A (30) - 999990b 2023043 333 0 DOD-P- 63 9 81A (AR) AMENDMENT 10 24 Julv 1996 SUPERSEDING AMENDMENT 9 29 November 1994 MILITARY SPECIFICATION PROJECTILE 30MM, HIGH EXPLOSIVE DUAL PURPOSE, M789, METAL PARTS This amendment forms a part of Military Specification DOD-P-63981 (AR), dated 29 Oc
2、tober 1982, and is approved for use by the US Army Armament Research, Development and Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 2.1.1, STANDARDS: Add “MIL-STD-1235 Single and Multilevel continuous Sampling Procedures and Tables
3、for Inspection by Attributes“. 2.1.2, Drawings: Delete “11825929“ and substitute “11825955“ PAGE 3 3.4: Add the following after I . shall fill the band seat.“: “When sectioned along the longitudinal axis, one half of the sectioned projectile body shall be examined for rotating band fill in the under
4、cut areas. Failure of either of the exposed sections to comply with 65% fill in the undercut areas shall be considered a defect. I 3.5: Delete in its entirety and substitute the following: “3.5 Soundness. The projectile bodies shall be examined for metal discontinuities by eddy current or ultrasonic
5、 inspection. A discontinuity in excess of .25m deep by 6.35mm in length shall be classified as defect.“ AMSC N/A 1 of 6 FSC 1305 Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63981A (101
6、 W 9999906 2021044 25T DOD-P-63981A (AR) AMENDMENT 10 3.6.1: Add to end of second sentence: “except coating weight shall be 25mg/sq ft minimum:“ Add to end of third sentence: “except 3 panels are required at the beginning of each shift only.“ * 3.6.3: Delete 24 hours and substitute 48 hours “3.6.3 C
7、orrosion resistance. The Bourrelet and ogive portion (exclude area aft of rotating band from the test) of the exterior painted surface of the projectile metal parts shall show no evidence of corrosion (red rust) after exposure to a 5% solution of atomized salt spray for 48 hours.“ PAGE 4 3.7: Should
8、 read as follows: “3.7 Metal Parts Security. The projectile metal parts when inert charged, fuzed and assembled into test cartridges meeting the ballistic requirements of Dwg. 11825954, shall not separate or break-up when tested for metal parts security.“ PAGE 5 4.3.1 Delete Quantity “125“ and subst
9、itute 164“, Quantity 400“ and substitute “560“. PAGE 6 Table I: Delete all notes at the bottom of the page and all reference to them. Band tightness: Delete “125“ and substitute “32“. Projectile, Metal Pqrts, Examination for defects: Delete ft321t and substitute “32*“. Projectile, Metal Parts, Sound
10、ness: Delete t1251t and substitute it125*“. Notes: Add li* This inspection can be performed on the same sample. It 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD- P- 6 3 9 8 1A (AR) AMENDMENT 10 PAGE 7 4.4.1, Inspection Lot Formation, Add the
11、following: “In addition, when heat treatment of projectile bodies is performed per MIL-H-6875, the size of each heat treat batch shall not exceed 5,000 units.“ 4.4.2.a: Delete “unless otherwise specified“ at the end of the paragraph and substitute “or MIL-STD-1235“. PAGE 8 4.4.2.1: Delete “minor 301
12、, width, maximum .40%, 3.3.1 Gage“. PAGE 9 Major 101: Delete “Length, mouth to rear of rotating band seat“ and substitute “Length, mouth to rear shoulder“. 4.4.2.2, Major 105: Delete “base“. Add Major 114 as follows: “114 Hardness at aft shoulder 8 L/ ACC-O 3.8 Hardness tester REJ-1 (non-destructive
13、)“ Add Note 1 as follows: “1/ Sample shall be per heat treat batch (ref. 4.4.1) if heat-treatment is per MIL-H-6875; or per shift if heat treatment is per MIL-S-12515.“ PAGE 11 4.4.2 -3: Major 102: Delete “min“ and substitute “max“ . Major 104: Delete “runout“ and substitute “true position“. Major 1
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