1、;. * ir MIL-W-b0LSA YO 9999906 0487669 O M I L - W - 6 O I 5A General Specification for Inspection of Miitaq JAN-B-121 JAN-P-125 Barrier-Haterials , Greaseproof Packaging and Packing for Overseas Shiperit - I3arrier4aterials , Waterproof , Fleldble STANDAFUX MIL-STD-I29 Marking of Shipnents (Copies
2、of specifications, standards, and drawings required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Materials.- 3.1.1 -.- The wire used in the rope shall be made fromthe be
3、st quality of a suitable type of steel. The WIWI- shall be uricoated, Le. , not galvanized, tinned, etc. U Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-W-60LSA 40 9999906 0487670 7 m w MIL-W-60158( ASG ) 3.1.2 Fiber.- The fiber of the core s
4、hall be the best quality of hard fiber commercially used for cores of wire ropes. (African, Java, Mauritius, Mexican, or Yucatan). hard fiber may be used. thoroughly cleaned, free from waste, evenly twisted, and of uniform ply. Rope Construction.- The rope shall be 6 by 19 construction, right-hand t
5、wist, regular lay, preformed, with a fiber core. strands of i9 main wires and 6 filler wires each, making a total of iU+ main wires and 36 filler wires in the strands. The hard fibers are manila (abaca) and sisal A mixture of two or more kinds of The fiber core shall be The core shall not contain ju
6、te fiber. 3.2 The rope shall have one core, and six 3.3 Strand Construction.- Each of the six strands of the wire rope shall have a main wire center, layer. There shall be 6 filler eres between the inner layer and the outer layer. AU. the main wires in the inner layer shall be one diameter. Ail the
7、main wires in the outer layer shall be one diameter. shall be fabricated in one operation. 6 main wires in the inner layer, and i2 main wires in the outer All the filler wires shall be one diameter. The strand 3.3.1 One Diameter.- Wjres in a wire rope are one diameter if the difference between the d
8、iameter of the smallest wire and the diameter of the largest wire ia not greater than the value specified in table I. TABLE I Wires of One Diameter Wire Diameter : Difference Between the Diameter of : the Smallest Wire and the Diameter of the Largest Wire Inch : Inch up to 0.029 O. 0015 o. 0020 0.00
9、25 0.030 to 0.059 O.l0 to O.l.49 O. 0030 0.060 to 0.099 3.3.2 Pitch.- All the wires in a strand fabricated in one operation shall have the same pitch, and each wire shall be in contact v+th the sante adjacent wires for its entire length. 3.4 Joints.- The strands of the wire rope shall contain no joi
10、nts made after fabrication. strands, the distance between a joint in any one wire and the joint in any other wire in the same strand shall be not less than 18 inches. Seizing.- Each end of each length of wire rope shall be suitably seized. Ductility.- Main wires taken from the completed wire rope sh
11、all not If joints are made in the individual wires befare the fabrication of the 3.5 3.6 fracture when tested by the method specified in Section 4. Th mechanical properties of the wire rope shall conform to the requirement shown in table II for the size (diameter) specified in the contract or order.
12、 difference between the actual unrestrained diameter and the initial diameter shall bo not more than the Ilmita given in table II. 3.7 Mechanical Properties.- 3.8 Preforming.- With the seizing at one end of the wire rope removed, the 2. Provided by IHSNot for ResaleNo reproduction or networking perm
13、itted without license from IHS-,-,-TABU II Mechanical Properties : Max Pedssibb : Diameter lf : Difference in Dia: Approx : Breaking Strength Nomi- : : When Seizing is : Weight : 2/ : Pitch 3/ na1 :Min : Max : Removed : per Foot : Nominal : Min : E= Inches: Inches: Inches : Inch : Pounds : Pounds :
14、Pounds : Inches 5/$ : 5/8 : 21/32 : 1/32 : : : : : 0.63 : 40,300 : 39,500 : 4.0 : 0.71 : 46,000 : 44,800 : 4.5 : 1.23 : 73,000 : 71,200 : 5.7 : 1.60 : 95,000 : 92,600 : 6.5 ;g: ll/l6 : “64 : 45/64 : 7/8 : 7 8 : 59/64 : 1 :1 : 1-3/66 : 3/64 1-1/8 : 1-1/8 : 1-11/64: 3/64 : 2.03 t n9,ooo : n6,ooo : 7.3
15、 : 2.50 : 46,000 : l42,000 : 8.1 l-l/4 : 1-1/4 : 1-5/16 : 1-3/8 : 1-3/! : 1-7/16 : 1/16 : 3.03 : 175,000 : 171,000 : 8.9 1-1/2 : 1-1/2 : 1-9/16 : 1/16 : 3.60 : 208,000 : 203,000 : 9.8 1-5/8 : 1-5/8 : 1-23/32: 1-3/4 : 1-3/4 : 1-27/32: 3/32 : 4.90 : 280,000 : 273,000 : u.4 : 5.63 : 3L$,OOO : 306,000 :
16、 12.2 1-7/8 : 1-7/8 : 1-31/32: 2 :2 : 2-3/32 : 3/32 : 6.40 : 350,000 : 341,000 : 13*0 1/16 3/32 3/32 : 4.23 : 242,000 : 236,000 : 10.6 1/ 2f The diameter of a wire rope is the diameter of the circumscribing Nomin% breaking strength values are to be used for design purposes. circle. Minimum breaking
17、strength values are acceptable when testing rope under this specification to account for slight reduction in strength resulting from the use of short test lengths. rope, in which a strand makes one complete turn about the axis of the rope. 2/ The pitch of a wire rope is the distance, parallel to the
18、 axis of the 3.9 Lubrication. - 3.9.1 The fiber core shall be thorougnly impregnated with a suitable lubricant during the process of core manufacture. 3.9.2 A suitable asphalt-base lubricant shall be applied to the strands during fabrication of the wire rope. The lubricant shall possess corrosion-re
19、sisting properties. 3.10 Identification Harker.- A suitable printed tape or tapes shall be either incorporated into the fiber core or run into the wire rope along the fiber core when the wire rope is closed. This marker tape is to distinguish this grade of wire rope from other grades. the wire rope
20、manufacturer, the nominal diameter of the wire row, and the words lFOR URCRAFT LAUNCHING AND ARREST1NG.I The marker tape shall bear, at not more than 1-foot intervals, the name of 3.U. Length.- The length in which the wire rope is to be furnished shall be as specified in the contract or order. be fu
21、rnished on a single reel. Not more than one size or length of wire rope shall c 3.l2 Workmanshi2.- The workmanship shall be first class in every respect. The wire rope shall be free from imperfections of manufacture affecting its appearance or which may affect its serviceability. 3 Provided by IHSNo
22、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 - MIL-W-bOl15A 40 O6 O487672 O . i. ,T MIGW-6015A(ASG ) 4. SAMPLING, INSPECTION, AND TEST PROCEDURES .4.1 General.- All the tests required for the testing of the wire rope covered by this specification are classified
23、as Inspection Tests, for which necessary sampling techniques and methods of testing are specified in this section. The contractor shall furnish all samples and shall be responsible for accomplishing the required tests. inspection is conducted at the contractorls plant, all inspection and testing sha
24、ll be under the surveillance facilities satisfactory to the Government shall engage the services of a comercial testing laboratory acceptable to the procuring activity, The contractor shall furnish test reports, in duplicate, showing quantitative results for the tests required by this specification
25、and signed by the authorized representative of the contractor or laboratory, as applicable. Acceptance or approval of material in course of manufacture shall in no case be construed aa a guaranty of the acceptance of the finished product. When of the Government Inspector. Contractors not having bibo
26、ratory 4.2 Examination of Product.- All rope shall be examined to insure conformance with the requirements for workmanship and for conformance with other requirements for which no test methods are specified herein. faster than 100 feet per minute and shall be stopped for closer inspeotion when deeme
27、d necessary. For this purpose, the rope shall travel no 4.2.1 The wire rope shall be unlayed a sufficient distance from the end and examined to determine that it contains a tape or tapes bearing the name of the wire rope manufacturer, the nominal diameter of the wire rope, and the words “FOR AIRCRBF
28、P LAUNCHING AND ARRESTIW as specified in paragraph 3.10. place at the time the rope is wound on shippbg reels. The examination shall take 4.3 Sampling Tests.- Ob 2-1/2 foot sample and one 7-foot sample shall be taken to represent each reeled hngth of wire rope, and the Ductility tests of paragraph 4
29、.3.2 shall be made on the short sample. rope construction shall be checked on either sample. to destruction to determine its breaking strength. quantity specified in the contract or purchase order and shall be furnished without cost to the Government. The Preforming test of paragraph 4.3.1 The wlre
30、The long sample shall be pulled Samples shall be in addition to the Samples selected shall be subjected to the following testa. 4.3.1 Preforming,- The diameter ?f the cable adjacent to a seized end of the specimen shall be measured, the seizing removed, and the diameter at the unrestrained end deter
31、mined. The increase due to removal of the seizing shall be computed. 4.3.2 Ductilitx.- From each short sample, not less than one specimen of each size of main wire from each strand shall be selected and the ductility determined. For wire rope 1 inch in diameter or smller, the ductility shall be dete
32、rmined by the !lank Test,“ while for and the fact that the Govern- ment may have formulated, furnished, or in any way euppied the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licencing the holder or any other person or corporation, or conveying any rights or permission to manufaoture, use, or sel1 any patented invention that may in any way be related thereto. Custodians : Navy -Bureau of Aeronautics Air Force a 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
