NAVY MIL-DTL-18492 B-2011 TANKS CARTRIDGE POWDER ROCKET AND COMPONENTS (ALUMINUM)《火箭粉末弹药罐及部件(铝质)》.pdf

1、 NOT MEASUREMENT SENSITIVE MIL-DTL-18492B (OS) 15 February 2011_ SUPERSEDING MIL-T-18492A 25 September 1973 DETAIL SPECIFICATION TANKS, CARTRIDGE, POWDER, ROCKET, AND COMPONENTS (ALUMINUM) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is availab

2、le for use by all departments and agencies of the Department of Defense. 1. SCOPE. 1.1 Scope. This specification establishes the requirements for aluminum cartridge, powder, and rocket tanks. 1.2 Classification. The tanks will be of the following types: Type I Cartridge tanks for fixed ammunition (c

3、artridges with projectiles) Type II Cartridge tanks for cartridges of separated ammunition (without projectiles) Comments, suggestions, or questions on this document should be addressed to DEPARTMENT OF THE NAVY, Indian Head Division, NSWC, Code E12AP, Document Control, 4123 Artisans Court, Suite 10

4、3, Indian Head, Maryland 20640-5085, OFFICIAL BUSINESS, 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 https:/assist.daps.dla.mil/ FSC 8140 DISTRIBUTION STATEMENT A: Approved

5、 for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18492B (OS) 2 Type III Powder tanks for propelling charges (powder in bags) Type IV Rocket tanks for rocket ammunition. 2. APPLICABLE DOCUMENTS 2.

6、1 General. The documents listed in this section are specified in sections 3, 4, or 5 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 to ensure the c

7、ompleteness of this list, document users are cautioned that they must meet all specified requirements of documents cited in 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 specification

8、s, 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-P-1757 Primer Coating, Alkyd Base, One Component DEPARTMENT OF DEFNSE SPECIFIC

9、ATIONS MIL-DTL-5541 Chemical Conversion Coatings on Aluminum and Aluminum Aloys MIL-E-16663 Enamel, Semi-Gloss (For Metal Surfaces of Ammunition and Ammunition Containers) MIL-PRF-81322 Grease, Aircraft, General Purpose Wide Temperature Range FEDERAL STANDARDS FED-STD-141 Paint, Varnish, Lacquer and

10、 Related Materials; Methods of Inspection, Sampling, and Testing FED-STD-595-26231 Colors Used in Government Procurement Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18492B (OS) 3 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-129 Military Markin

11、g for Shipment and Storage MIL-STD-1916 DOD Methods for Acceptance of Product (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Govern

12、ment documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. DRAWINGS BUWEPS (10001) 99085 Load Tes

13、t for Ends of Tanks NAVSEA S9074-AQ-GIB-010/248 Requirements for Welding and Brazing Procedures and Performance Qualifications (Application for copies should be addressed to the DEPARTMENT OF THE NAVY, Indian Head Division, NSWC, Code E12P, Document Control, 4123 Artisans Court, Suite 103, Indian He

14、ad, MD 20640-5115 OFFICIAL BUSINESS.) 2.3 Non-Government publications and drawings. The following document forms 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. AMERICAN SOCIETY FOR TES

15、TING AND MATERIALS (ASTM) ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apartus ASTM B633 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel ASTM D3951 Standard Practice for Commercial Packaging (Copies of these documents are available online at http:/www.ast

16、m.org or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18492B (OS) 4 AMERICAN WELDING SOCIETY (AWS) AWS D17.2/D1

17、7.2M Specification for Fusion Welding for Aerospace Applications (Copies of these documents are available online at http:/www.aws.org or from the American Welding Society, 550 N. LeJeune Rd., Miami, FL 33126) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of

18、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. REQUIREMENTS 3.1 General manufacture. Manufacture

19、of all parts shall proceed in accordance with the requirements of the contract, purchase order or requisition, appropriate drawings, and this specification. 3.2 Materials. All materials used in the manufacture of these tanks shall conform to the specifications listed herein and to the specifications

20、 referred to on respective drawings, unless specific approval in writing, covering a departure therefrom, has been obtained from the Government prior to manufacture or use. When alternate materials or methods of manufacture are specified, the bidders selections shall be stated clearly in the proposa

21、l. 3.3 Conformance to drawings. All dimensions shall be accurate within the tolerances specified on the drawings or in the applicable specification, unless otherwise stated in the contract, purchase order, or requisition. 3.4 Surface. All parts shall be finished as prescribed on the applicable drawi

22、ngs and specifications unless otherwise stated in the contract. 3.5 Interchangeability. All parts shall be capable of interchangeable assembly without interferences, binding, or misalignment. All parts comprising a permanent joint unit (as welding) and the unit thus formed shall be capable of interc

23、hangeable joining in the assembled unit and assembly. 3.6 Gages. The contractor shall provide whatever production gages are necessary and adequate to ensure complete interchangeability of all parts, and to determine that all dimensions are within the tolerance shown on the applicable drawings. If so

24、 stipulated in the procurement document, the Government will furnish drawings of pertinent Navy Final Inspection Gages for guidance in design of the contractors inspection gages. Such procedures shall not serve to relieve the contractor of his responsibility in design Provided by IHSNot for ResaleNo

25、 reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18492B (OS) 5 and manufacture of the other production gages as may be required for the satisfactory fulfillment of contract requirements. 3.7 Top ring. The top ring shall be assembled on the tank with its axis coincident with

26、 that of the tank body. The pressure or helical bearing surfaces of the top ring and the top of the cover ring, which will serve to secure the cover assembly to the tank, shall be a smooth true helix, with the axis coinciding with the axis of the tank. There shall be no tendency for the outside cyli

27、ndrical surface of the cover ring to jam or bind with the opposing inside cylindrical surface of the top ring. All coincident axes shall be within tolerances specified on the applicable drawings. 3.8 Locking rings. For tanks fitted with tongue and groove locking rings, the tongue and grooves of the

28、adjacent tanks shall so fit with each other that bearing between neighboring locking rings shall be on top of the tongues or ridges and on the bottom in grooves. There shall be no tendency for tongues to wedge in grooves, nor shall bearing between the tanks take place on the outer cylindrical surfac

29、es of the top ring between the top edge and the locking ring. 3.9 Cover Assembly. 3.9.1 Cover. The cover shall be manufactured in accordance with the applicable drawing. The cover shall be free to rotate with respect to the cover ring after the cover has been formed into the groove in the cover ring

30、. Prior to assembly, apply a thin continuous coating of grease, MIL-PRF-81322, between all sliding surfaces of the cover. 3.9.2 Cover ring. The axis of the cover ring shall be perpendicular to the surface of the cover which forms a seat for the gasket and shall be coincident with the axis of the hel

31、ical bearing surface within tolerances specified on the applicable drawings. The cover ring and cover assembly, when in the unlocked position, shall be easily removed from the top ring at any of the positions in which it may be assembled to any tank. 3.9.3 Gasket and gasket bearing surface. A new ga

32、sket of the type prescribed by the applicable drawings shall be cemented in the tank cover with an adhesive of the type prescribed by the applicable drawings. The gasket mating surface shall have a 125/micro inch minimum finish and shall be flat within +/-.005 inches. Bearing surfaces shall not inju

33、re the gasket during closing and opening of the tank, and shall ensure proper seating of the gasket. The gasket shall provide sealing at closure of the cover assembly (see 3.13). 3.10 Bottom. The axis of the outside cylindrical surface of the bottom shall coincide with the axis of the tank body and

34、the top ring within the tolerance specified on the applicable drawings. The bottom surface shall be perpendicular to the tank axis and parallel to the top surface of the top ring within tolerances specified on the applicable drawings. Provided by IHSNot for ResaleNo reproduction or networking permit

35、ted without license from IHS-,-,-MIL-DTL-18492B (OS) 6 3.11 Interior fittings. The interior fittings shall be true to form and all surfaces and edges shall be smooth and free from projections, sharp edges, rough spots, and similar defects that would tend to damage the contents, interfere with the as

36、sembly or loading of the tanks, or injure personnel. All supporting and positioning fittings shall be concentric, and the bottom surface on which the fittings rest shall be perpendicular, within the tolerances specified on the applicable drawings, to the axis of the fittings so that the contents wil

37、l be properly aligned in the tank. Where multiple diaphragms are used, diaphragms shall be parallel and at right angles to the axis of the tank within the tolerances specified on the applicable drawings. If an extractor is used in the cartridge tanks, the extractor shall slide freely between the tan

38、k body and the cartridge case to ensure easy withdrawal of the cartridge. 3.12 Cleaning, preparation of surfaces, and painting. 3.12.1 Exterior surfaces (cover assembly). All aluminum surfaces to be painted shall have a chemical film applied by treatments and products in accordance with MIL-DTL-5541

39、, Class 1A. The chemical films shall be produced by treatments controlled and operated to give a uniform product and shall be continuous and free from breaks, scratches, and other damage affecting the serviceability of the film. 3.12.2 Exterior surfaces (tank). Exterior surfaces of the tank shall be

40、 prepared in accordance with the applicable drawings to ensure good paint adhesion and good welds. 3.12.3 Faying surfaces. All faying surfaces which are not welded shall be coated with Primer Coating, TT-P-1757, color Y. Each surface shall be allowed to dry hard before assembly. 3.12.4 Painting. Ext

41、erior surfaces shall conform to the requirements specified on the applicable drawing, MIL-E-16663, and FED-STD-595. Enamel dry film thickness shall be 1.5 to 2.0 mils. The contacting surfaces between moving parts shall not be painted (see Section 3.9). 3.12.5 Corrosion resistance and paint adhesion.

42、 When tested in accordance with 4.5.5, the treated and painted tanks and cover assemblies shall withstand exposure to salt spray testing as specified in 4.5.5. Paint film shall show no evidence of wrinkling, blistering, cracking, powdering, or flaking in areas adjacent to the scribing, nor shall the

43、re be any evidence of corrosion on any other exposed surface of the tanks or tank covers when tested in accordance with FED-STD-141 and ASTM B117. 3.13. Air tightness. All tanks and cover assemblies shall be capable of withstanding the internal air pressure tests of Sections 4.5.1 and 4.5.2 without

44、evidence of any structural weakness or permanent deformation. Formation of air bubbles shall be sufficient evidence of leaks serious enough to reject the tank or cover assembly. 3.14 Serviceability. While weight loaded and tested in accordance with 4.5.3, the cover assemblies of the tanks shall be e

45、asily tightened, loosened, applied or removed, and the contents shall be easily removed Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18492B (OS) 7 from the tank. After removal of the loads, the tanks, top rings and bottoms shall show no pe

46、rmanent deformation. 3.15 Drop test. Upon completion of the drop tests in accordance with 4.5.4, the air tightness (3.13) and serviceability (3.14) requirements shall apply. 3.16 Marking. All marking or stamping on the tanks shall be as shown on the applicable drawings. Stamped or embossed lettering

47、 on the cover, body, and interior fittings of the tank shall be legible after the tank has been completely finished. 3.17 Welding. All surfaces to be welded shall be thoroughly cleaned and shall be free from grease, paint, or other foreign substances. All aluminum welding shall conform to the requir

48、ements as specified on the applicable drawings, and in accordance with AWS D17/D17.2M, and NAVSEA S9074-AQ-GIB-010/248. 3.18 Workmanship. Workmanship shall be that required by best commercial practices consistent with quality production of analogous parts, maintaining dimensions, finishes, and toler

49、ances specified herein and on the applicable drawings and specifications. All components shall be sound and free from defects which would deleteriously affect the strength and performance of the tank and cover assembly, and all joints and seams shall be tight and sound. All surfaces shall be free from rough spots, sharp edges and burrs, protrusions, dents, cracks, dirt, grease, rust, other for