1、MIL-S-45 387i (AT) 27 October 1976 SUPERSEDING . MIL-S-45 387A (MO ) 23 April 1964 MILITARY SPECIFICATION SPRINGS, TORSION- BAR, SUSPENSION This specification is approved by Army Tank-Automotive Command, Department of the Army, and is available for use by all Depart- ments and Agencies of the Depart
2、ment af Defense. 1. SCOPE 1.1 Scope. This specification covers straight, solid, circular cross- - section, torsion-bar springs. 2. APPLICABLE DOCUMENTS 2.1 Issues of docunents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this
3、specification to the extent apecified herein. SPECIFICATIONS Federal TT-c -490 TT-P -636 TT-P -1757 * Military MIL-1-6866 MIL-M-11472 MIL-S-13165 MIL.- I- i5 i26 Cleaning Method and Pretreahent of Ferrous Surfaces for Organic Coatings, Primer Coating, Alkyds Wood and Ferrous Metal. Primer Coating, Z
4、inc Chranate, Low-Moisture- Sensitivity, Inspection, Penetrant Method of. Magnetic-Particle Inspection; Process, for Ferrmagne tic Materials . Shot Peening of Metal Parts. Insulation Tape, Electrical, Pressure Sensi- tive Adhesive and Pressure Sensitive Thermo- setting Adhesive. Beneficial comments
5、(recmnendations, additions, deletions ) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Tank-Automotive Materiel Readiness Canmand by using the self-addressed Stan- 8acaditz%k% Licensed by Information Handling ServicesProvided by IHSNot for Res
6、aleNo reproduction or networking permitted without license from IHS-,-,- I MIL-S-453i7B 25-W 9399906 0397267 9 I MIL-Sb-105 - Sampling Procedures and Tallos for Inrpeetion by Attributes , DRAWINGS Inspection Equpnent K-8668989 - Supplementary Quality Asiwce Erwisions (SQAPS). (Copies of spcification
7、s, standards, drawings, rr#2 pubMerthnu required bu sumliers in connection with stxcific brocurnrnt funations shou be oltaine frcm the procuring activity or as directed by the cntraotiry officer.) . . 3. REQUIREMEWS * 3.1 Preproduction semple(s). Prior to the mwufaetwe of teroien bar - springs in qu
8、antities a preproduction samplc(s) shall be rubm%Mod far examina- tion and tests specified herein (sec 4., Free ends aha11 have an 3.6.4 Serration protection. Springs not intended to be immediately pack- 4. QUALIW MjRANCE OVISIONS aged shall be suitably protected from transportation and handling dam
9、age, 4.9 Reqoirisibillty fw inspection, Unless otherwise specified in the contrast or purchase order, the supplier is responsible for the! performance of oll inepction requirements specified herein. Except as otherwise spec$- fieil, th16 sugpler may utilize his own facilities or any commercial labor
10、atory ascepWb.33 to.%he Government. any of the %napwSons set forth in the specification where such inspections are deenied nsceosary to assure supplies and services conform to prescribed re- quirements a the gos%kiactivity the contractor shall provide and maintain an effective Irispestion enii Quali
11、ty Control System acceptable to the Government covering the supplies iuiiler contract. be mbfiiitted The co1itrglCtor will not be restricted to the inspection station or to the method of inepction Us.t;ed provided that an equivalent limitation is included in the approved quality control procedure, a
12、nd ohtain approval for any change to the written procedure that might affect the degree of control required by this specification or other applicable docu- ments referenced therein. The Government reserves the right to perform 4.S.3, Co$ractor quality control system. Unless otherwise specified by A
13、current written description of the system shall the contracting officer prior to Initiation of production. The contractor shall notify the Government 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-intervals. to determine that practices, methods, a
14、nd procedures of the written inspection plan are being properly applied, and (b) Government product inspection to meas- ure quality of product offered for acceptance. Deviation from the prescribed or agreed-upon procedures, or instances of poor practices which might have an effect upon the quality o
15、f the product, will be immediately called to the atten- tion of the contractor. Failure of the contractor ta promptly correct deficien- cies discovered shall be cause for suspension of acceptance until corrective action has been made or until conformance of product to prescribed criteria has been de
16、monstrated. Verification will-consist of (a) surveillance of the operatiins 4.2 Preproduction test. Unless otherwise specified (see 6.1), a minimum of 3 torsion bar springs of the material to be furnished shall be selected for preproduction testing (see 4.4.11.3). shall be conducted by the contracto
17、r under Government surveillance at the place approved by the Government. Preproduction inspection and testing 4.2.1 Failure. Failure of the samples to pass the inspection and testing shall be cause for refusal of the Government to conduct retest until corrective measures satisfactory to the Governme
18、nt have been taken. 4.3 Production inspection. 4.3.1 Lot by lot inspection. 4.3.2 Inspection lot formation. ness otherwise specified, a lot shall Lot by lot inspection shall be performed y the contractor in accordance with the following procedures. e consist of any quantity of springs of the srne si
19、ze, ficm the same heat produced by one manufacturer, under essentially the same conditions. 4.3.3 Sampling inspection. 4.3.3.1 Visual and dimensional inspection. Sampling shall be in accordance with MIL-Sni-105, level (Am) shall be as specified in tables I and 11. The classification of characteristi
20、cs and acceptable quality 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.3.2 Classification of characteristics. Table I. Claseification of defects %jor-.M machined area shall then be peened as specified in 3.5.5. I“ 6.2.1 Recommended means of
21、assessment of effectiveness of shot Deenim. I I Burface resiauiiiktress measurements have aroven to be an excellent means of I determining the effectiveness of shot peen- intensity and coverage, It has been found that average compressive residual stress for a correctly processed steel bar will be in
22、 the range of 45,000 to 60,000 psi and the standard devia- tion (one sina) of th readings will be lese than or equal to 8,000 pai. A minimum of two heed (200) readings are generally taken utilizing an auto- mat& residual stress instrument, Readings are taken randomly from one (1) by one (1) inch squ
23、are grids that have been superimposed longitudinally and radially on the spring surface, 6.3 Changes frun previous issue. The margins of this specification are marked with an asterisk to indicate where changes (additions, modifications, corrections, deletione) from the previous issue were made, This
24、 was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. uate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. * Bidders and contractors are cautioned to eval- Custodian: Amy - AT 1W.S. GOVEWNMBNT PRINTING OFFICE: 1977-703020/23 Preparing activity: Project No, 2530-A254 Army - AT Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
