1、 MIL-C-bOq57 13 m 7777706 O338623 T m I NIL-C-60457 (MU) 27 October 1967 Supersedes PA-PD-2690 Rev. 1 i5 November i965 MILITARY SPECIFICATION CARTRIDGE, 105 MM, HE, ROCKET ASSISTED, XM548, BODY, MOTOR FOR 1. SCOPE 1.1 This specification covers the motor body for Cartridge, 105MP1, HE, Rocket Assiste
2、d, XM548. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-A-2550 - Ammunition and Special Weapons, General Specification for. MIL-1-6868 - Inspectio
3、n Process-Magnetic Particles MIL-H-6875 - Heat Treatment of Steels (Air Craft Practice, Process for) MIL-1-45607 - Inspection Equipment, Supply and Maintenance of. STANDARDS FEDERAL FED-STD-151 - Metals, Test Methods MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes
4、MIL-STD-109 - Quality Assurance Terms and Definitions MIL-STD-1168 - Lot Numberiqg of Ammunition MIL-STD-1235 - Single or Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
5、-,- HIL-C-bOq57 13 777770b 033862Li L MIL-C-60457 (MU) DRAWING ORDNANCE CORPS 9212147 - Box, Fiber, Inner, For Body Motor, XM548 9212148 - Box, Fiber, Outer, For Body Motor, X548 9212398 - Body, Motor, XM548 (Metal Parts) (Metal Parts) PUBLICATIONS ORDNANCE CORPS ET-9212398 - Equipment Tabulation (C
6、opies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer). 2.2 Other publications.-The following document forms a part of this specifi
7、cation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. American Society for Testing Materials ASTM B 328-60 - Density and Interconnected Porosity of Sintered Powder Metal Structural Parts and Oil-Impregnated Bearings. (Appli
8、cation for copies should be addressed to the American Society for Testing- and Materials, 1916 Race Street, Philadelphia 3, Pa.). 3. REQUIREMENTS 3.1 Material.-Materials shall comply with the requirements specified on the applicable drawing and all referencedspecifications. 3.2 Parts.-The parts shal
9、l comply with all requirements specified in the applicable drawings and specifications. 3.3 Banding 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-60457 13 = 7777706 O338625 3 MIL-C-60457 (MU) 3.3.1 Band seat and band blank.-Prior to the app
10、lication of the rotating band blank, the band seat and band blank shall be clean and free of oil, grease, dirt, rust, excess wax and other foreign material. Shot or sand blasting shall not be used for cleaning. 3.3.2 Band application.-The rotating band shall be applied in the cold state only. The ba
11、nd blank shall be carefully pressed into the band seat after final heat treatment and hydrostatic test of the motor body in such a manner as to prevent distortion of the adjacent walls and eliminate gap between the band and band seat. The rotating band shall make contact with the sidewalls of the ba
12、nd seat for a full 360 degrees and a minimum af 50 percent of the sidewall area. Distortion of the sidewalls shall be considered not to have taken place if the thread counterbore diameter remains within specified drawing tolerances. Once an acceptable bandina pressure has been established, that pres
13、sure shall be maintained within plus or minus 25 PSI. 3.3.3 Density. - The density of the band, when pressed on the motor body, shall not exceed 6.45 grams per cubic centimeter. 3.4 heat treatment in accordance with specification MIL-H-6875 to at- tain the required mechanical properties specified on
14、 the applicable drawing except that the body shall not be tempered between 500 F. and TOO0 F. All other deviations shall be subject to approval by the contracting officer. Heat treatment.-The motor body shall be subjected to 3.5 Hydrostatic test.-The motor bodies shall withstand an internal hydrosta
15、tic pressure in accordance with the requirements on the drawing without evidence of cracks, ruptures, leakage or flaws. There shall be no permanent deformation at the location indicated on the drawing. marks, gouges, scratches, or other surface imperfections in the exit cone of the motor body. The s
16、urface finish shall be as specified on the drawing. 3.6 Surface finish of exit cone.-There shall be no tool 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-hOY57 13 I 9999906 0338626 5 1 MIL-C-60457 (MU) 3.7 Metal defects.-There shall be no c
17、racks, seams, laminations and laps in the motor body as evidenced by magnetic particle inspection. the rotating band when pressed on the motor body. inclusions will be permitted in the motor body as specified in 3.7.1. indication 1/16 inch and over in length shall be recorded. Indications shall be n
18、o less than 3/8 inches apart. Motor bodies shall conform to a maximum frequency rating of 0.80 and a maximum severity rating of 0.67. The frequency (numbers) and severity (size) of indications shall be calculated as follows: There shall be no cracks in Non-metallic 3.7.1 Non-metallic inclusions.-Eac
19、h non-metallic inclusion 3.7.1.1 Frequency: 3.7.1.1.1 The number of indications per motor body*all be tot aled. 3.7.1.1.2 by 132 square inches (frequency per motor body). 3.7.1.2 Severity: 3.7.1.2.1 3.7.1.2.2 The summation of severities for each motor body shall be computed by totalling the products
20、 of the number of indications times the appropriate progression factor listed in the following table: The total number of indications shall be divided The length of each indication shall be recorded. LENGTH OF INDICATION IN CH 1/16 to 1/8 inch Over 118 to 1/4 inch Over 1/4 to 1/2 inch Over 1/2 to 3/
21、4 inch Over 3/4 to 1 inch Over 1 to 1 1/2 inch PROGRESSION FACTORS FOR SEVERITY RATING 0 -5 1 2 4 8 16 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-60457 13 i 7777706 0338627 7 W MIL-C-60457 (MU) 3.7.1.2.3 The summation of Severities for e
22、ach motor body 3.8 is divided by 132 square inches (severity per motor body). for purposes of identification. Serialization.-Each motor body shall be serialized 3.9 Threads.-The threads shall be undamaged for the entire length of the thread. 3.10 Proving ground.-The banded motor body when fired at a
23、 proving ground in a M103 or Ml37 cannon shall not collapse, deform or break up in the gun bore or in flight when fired using a propellant charge adjusted to produce 40,000 p.s .i. chamber pressure. 3.11 First Article Inspection.-This specification makes provisions for first article inspection. Requ
24、irements for the submission of first article samples by the contractor shall be as specified in the contract. 3.12 Workmanship.-All parts shall be fabricated and finished in a thorough, workmanlike manner. They shall be free of cracks, scratches, burrs, dents, gouges, holes, porous areas, distortion
25、s sharp edges, unblended radii, surface defects or any surface discontinuities. The item of shipment shall be free from dirt, chips, grease, corrosion, and other foreign material. The cleaning method used shall not be injurious to any part nor shall the parts be contaminated by the cleaning agent. A
26、ll required markings shall be neat and sharply defined. Exterior surface coatings shall be continuous except for a few scratches not exposing base metal. 4. QUALITY ASSURANCE PROVISIONS 4.1 General quality assurance provisions.-Unless otherwise specified in the contract or purchase order, the suppli
27、er is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory accep- table to the Government. The Government reserves the right to perform any of the inspections set fo
28、rth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order to define terms used herein. The provisions of Specification MIL-A-2550 shall apply. 5 Provided by IHSNot
29、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-60457 (MU) 4.1.1 Submission of product.-At the time the completed lot of product is submitted to the Government for acceptance, the contractor shall supply the following information 8CCompanied by a certificate whic
30、h attests that the information provided is correct and applicable to the product being submitted: a. A statement that the lot complies with all of the quality assurance provisions specified within this specification. b. Number of units of product inspected. c. Results obtained, by defect code, for a
31、ll inspections performed. d. Drawing, specification number and date, together with an identification and date of changes. e. Certificates of conformance on all material purchased by the contractor when such material Is controlled by Government or commercial specifications referenced in any of the co
32、ntractual documents. The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submitted shall be substantiated by evidence of the agents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent
33、certificates unless, during the course of the contract, this authority is vested in another agent of the certifying organization. 4.1.2 Government verification.-Using the contractors written quality assurance procedure, this detailed specification, the applicable drawings and other contractual docum
34、ents as a guide, the Government inspector shall verify at unscheduled intervals, all quality assurance operations performed by the contractor. Verification will be performed to the extent necessary to assure compliance with the contractual requirements. Severity of Government inspection of individua
35、l characteristics will be directly related to the seriousness of the classification assigned. In no instance will a characteristic classified llcriticall be accepted solely on the basis of the contractors records. f. Number of items in the lot. g. Date submitted. 4.2 First Article Inspection. 4.2.1
36、Submission. - The contractor shall submit a first article sample as designated by the contracting officer for evaluation in accordance with the provisions of 4.2.2. The first article sample shall consist of 35 motor body assemblies painted, 15 motor body assemblies unpainted and 10 complete sets of
37、parts unpainted (i.e., 10 unbanded motor bodies and 10 rotating band blanks) which have been produced by the contractor or 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- Y MIL-C-bOY57 13 I 7777906 0338627 O I MIGC-60457 (MU) furnished by a suppli
38、er and which have been manufactured using the same production processes, procedures and equipment which will be used in fulfilling the contract. including packaging and packing, shall be obtained from the same source of supply as will be used in regular production. Prior to submission, the contracto
39、r shall inspect the sample to the degree necessary to assure that it conforms to the requirements of the contract and submit a record of this inspection with the sample, including statements of findings/certificates of conformance for materials, (see 4.1.1.e). A sample containing known defects will
40、not be submitted unless specifically authoriz- ed by the contracting officer. A first article sample, or por- tions thereof, as directed by the contracting officer, shall also be submitted whenever there is a lapse in production for a period in excess of 90 days or whenever a change occurs in manufa
41、cturing process, material used, drawing or specification such as to significantly affect product uniformity as determined by the Government. ponents will be subjected by the Government to an or all of specification and any or all requirements of the applicable drawings. comply with any of the applic
42、able requirements, the first article sample shall be rejected. The Government reserves the right to terminate its inspection upon any failure of an assembly O com- ponent to comply with any of the stated requirements. In the event of rejection, the Government reserves the right to require the contra
43、ctor to take corrective action and submit a new first article sample or portion thereof. Until a first article sample is accepted, the contractor is, in no way, authorized by the Govern- ment to initiate regular production unless otherwise directed by the contracting officer. All parts and materials
44、, 4.2.2 Inspections to be performed. - Assemblies and com- the examinations or tests specified in 4.3.2 and t .3.3 of this 4.2.3 Rejection. - If any assembly or component fails to 4.3 Inspection provisions. 4.3.1 Lot formation. - The term tilot“ as used throughout this specification refers to an ins
45、pection lot, which is defined as an essentially homogeneous collection of units of product from which a representative sample is drawn and inspected to determine conformance of the lot with applicable requirements. The sample selected shall represent only that quantityof units from which the sample
46、was drawn and shall not be construed to 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-60457 23 9999906 0338630 7 MIL-C-60457 (MU) represent any prior or subsequent quantities presented for inspection. Homogeneity shall be considered to exis
47、t provided the lot has been produced by one manufacturer, in one unchanged process using the same materials and methods, in accordance with the same drawings, same drawing revisions, same specifications and same specification revisions. Changes to the process, specification, or drawings, not affecti
48、ng safety, performance, interchangeability, or storage, as determined by the Government, shall not be deemed to alter the homogeneity of the lot, In- spection lots shall comply with MIL-STD-105. Unless otherwise approved by the contracting officer, the inspection lot size of end items deliverable un
49、der the contract shall be not less than the smallest weekly estimate of quantities contractually scheduled for production during the contract period nor more than the largest monthly quantity contractually scheduled for delivery during the contract period. Inspection lots of components or subassemblies, other than the items of delivery, shall be homogeneous and of a size mutually convenient to both the contractor and the Government inspec
