1、i MILTTA2Y SPECIFICATION .t WIRE ROPES, STEEL, BARE Aim NYLON COVERED- CORROSION-RESISTING, FLEXIBLE, PREFORMED, OCEANOGRAPHIC AN3 BATHYTHERMOGRAPHIC 1. SCOPE 1.1 Scope. - This specification cwers requirements for flexible, preformed, corrosion- 1.2 Classification. - Flexible, preformed, corrosion-r
2、esisting steel wire rope, covered by resisting steei wire rope, with and without nylon covering, this specification, shall be of the following classes, as specified (see 6.2). Class A - -Without nylon covering. Class B - With nylon covering. 2. APPLEABLE DOCUMENTS 2.1 The following specifications an
3、d standards, of the issue in effect on date of invitation for bids, form a part of this specification: SPECIFICATIONS FEDERAL QQ-S-781 - Strapping, Fiat; Steel. QQ-S-790 - Steel Strapping, Round; (Bare and Zinc-Coated). W-P-271 - Paper, Wrapping, Waterproofed Kraft. MIL-8-121 - Barrier Material, Gre
4、aseproofed, Flexible (Waterproofed). JAN-T-781 9 Terminal; Cable, Steel (for Swaging). General Specifications for Inspection of Material. . EAIIJTARY NAVY DEPARTMENT STANDARDS FEDERAL FED-STD-151 - Metals; Test Methods, MZLSTD-129 - Marking for Shipment and Storage. MILITARY (Copies of specification
5、s, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer. 1 FSC 4010 o Pounds ; ; Pounds ; : 5/32 : 30 ; 75,000 : 1,300 ; I Tension is equal to haf of weigh
6、t (w) which includes idler sheave and hanger, as shown on figure 1, Class A wire rope shall be furnished in reels of 3000 feet (for 3/32 inch dia,“,;B;3romo0 and 20,000 feet (for 5/32 inch diameter rope size) continuous lengths, unless otherwise specified (see 6.2). All lengths shall be provided wit
7、hout joints of any kind, except as specified in 3.2.1.2. 3.3.4 Lubrication, - The wires of the class A rope shall be thoroughly coated with a suitable friction-preventive compound. The amount of compound adhering to the finished rope after the applica- tion shall be such that a white cloth, which ha
8、s been rubbed once over a one-foot length of rope, will show a noticeable amount of the compound. The friction-preventive compound shall possess corrosion- resisting properties, 3.4 Class B - nylon covered wire rope. - The wire rope used in the manufacture of class B, wire rope shall be the same as
9、specified in 3.2.1, 3.2.1.1, 3.2.1.2 and 3.2.1.3, 3.4.1 Nylon covering. - The nylon covering shall be DuPont Co. “ZYTEL 37X“, or equal, 100 percent virgin nylon resin, having no reground material, pigmented or dyed black. The applied sheath shall be 1/32 inch thick, and shall be concentric with the
10、wire rope. The outside diameter, after application of the covering, shall be 5/32 inch minimum. 3.4.1.1 The wire used in the fabrication of class B wire rope shall be the same as that specified for class A wire rope. The requirements of 3.1 are applicable. 3.4.2 N lon finish grooves, crmor inclusion
11、s. The covering shall be firmly cornposited with the wire rope, 3.4.3 Ro e len h a Nylon finish shall be smooth, and free of waviness, scratches, pits, bubbles, Class B wire rope shall be furnished in reels of 250, 500, 1200, and 3000 feet, cont * nuous lengths, unless otherwise speciied (see 6.2).
12、All lengths shall be provided without any joints of any kind, except as specified in 3.2.1.2. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIIL W-21632(SHIPSj 3.5 Workmanship. - All details of workmanship shall be in accordance with the best p
13、ractice for high quaty wire rope consistent with the requirements of this specification. The rope shall be securely laid and free from kinks, loose wires, loose strands, or other defects. 4. QUALITY ASSURANCE PROVISIONS 4.1 Uniess otherwise specified herein the supplier is responsible for the perfor
14、mance of all inspection requirements prior to submission for Government inspection and acceptance. Except as otherwise specified, the Supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. inspection records of the examinations and tests shall be kept comp
15、lete and available to the Government as specified in the contract or order. 4.2 Wire.- 4.2.1 Unless otherwise specified (see 6.2), a lot shall consist of all wire of the same class and size, submitted for acceptance inspection at the same time, and manufactured by the same process from steel of the
16、same heat. 4.2.2 Chemical analysis samples. - From each lot, sufficient wire shall be taken to prepare a sample weighing not less than 2 ounces. The sample shall consist of fine chips of metal, free from oil, dirt, and other foreign matter which would interfere with a chemical analysis. 4.2.2.1 Chem
17、ical analysis. - Chemical analysis shall be made by standard wet chemical methods or by spectographic methods except that, in the event.of a dispute, analysis by standard wet chemical methods shall be the basis for acceptance or rejection. 4.2.3 Sample coils for tensile strenqth and wrapping tests.
18、- Samples for tensile strength and WIXDDU tests shall be selected by the insDector in accordance With table V. They shall be taken at random xcept that when inspectin is made at the contractorYs plant, some of the-specimens shall be taken by the inspector near the first, last, and any intermediate c
19、oib of each lot, at the time the wire is being unreeled to form small coils for shipment. Table V - Sample coils for tensile strength and wrapping, : Maximum : : in pounds : sample : failures : : Lotsize : Nimber Of : number of : : Coils : allowed : O O O : : Under 1,000 2 : 1,m to 3,000 : 3 : 3,001
20、 to10,OOO : 5 : Over 10,000 : 10 1 : 4.2.3.1 Test sam les From each sample coil, a test sample long enough for test purposes to determine comee requirements of this specification shall be taken by the inspector, Each test sample shall be identified by sample coil and lot number. with the requirement
21、s of this specification not involving tests, 4.2.4 Examination. - Wire shall be visually and dimensionally examined for defects in accordance 5 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL- W-2!632(SHIPS) _I- MIL-W-23632 40W990b 0439462 L m
22、 4.2.5 Tests. - nless otherwise specified herein, tests shall be conducted in accordance. with Standard FED-STD- 1.51 I 3; Shall not crack, split or break when wrapped at least 8 turns equal to the diameter of the wire) around a mandrel. For wire O. 162 inch in diameter and smaller the mandrel diame
23、ter shall be equal to the wire diameter. 4.2.7 Reworking and reinspection. - Rejected lots may be reworked by the manufacturer in order to eliminate material not conforming to this specification. After reworking, the material may again be submitted for inspection. Only one such resubmissio shall be
24、permitted for.any lot of wire. 4.3 Finished rope. - 4.3.1 Lot. - A lot shall consist of wire rope of the same class, construction, and diameter produced continuously by one machine or one series of progressive processing machines. of product, w. 3 i), one sample, not less than 40 feet in length for
25、the size specified in table IV and not less than 15 feet in length for other sizes, shall be taken, after any discard bw besn removed, from the head or starting end of the first manufacturing reel for each tot of rope. In addition to this sample, one sample shall be taken from each shipping reel of
26、20,000 feet or less, except thnt for shipping reels of 5,000 feet or less, one sample shall be taken from each 5,000 feet of rope irom each lot. 4.3.2 Sam lin When conducting the tesis specified herein, with the exception of examination 4. 3.3 Acceptance inspection. - 4.3.3.1 Examination. - All rope
27、 shall be examined for workmanship and finish. For this purpose the rope shall travel no faster than 100 feet per minute, and shall be stopped for closer examination when deemed necessary, This examination shall take place at the time the rope is wound on shipping reels. Any discard from the head en
28、d of the manufacturing reel shall be removed prior to Winding on the shipping reels, selected. Terminals conforming to Specification JAN-T-781 shall be swaged to the ends of the specimens. The length of the rope test section, between terminals, shall be approximately 2 feet. The terminals shall be c
29、lamped in the jaws of the testing machine or suspended between fixtures attached to the heads. The breaking strength shall be determined by use of a tensile testing machine in compliance with the 4.L3.2 Breaking strenqths. - Three specimens shall be prepared from each sample of rope f applicable req
30、uirement of method 211 of Standard FED-STD-151. P _ e 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 . MIL-W-ZLb3Z 40 = 7999906 0439463 3 m MIL- W- 2 1632 (SHIPS) - 4.3.3.3 Endurance. - One endurance test specimen shaiL be prepared from each sam
31、pte of 5/32 inch iiameter rcpe. The number of oscillations per minute, the total number of reversals, and the tension in the rope for the endurance test shall be as indicated on figure 1 and table IV for 5/32 inCh diameter rope. The total travet of the rope in one direction shal1 be 13-1/2 inches. T
32、he test pulleys shall be made of steel and shall conform to the dimensions shown on figure 2. . TEST WLLEYS18LE ROPE UNDER TCW MWMTKIN COUNTER UaaT iLaR SHEAVE II 1/2 “DIAMETER MIN, W W= WELOW (CEE TABLE IV.) RRE 0) Figure 1 - Rope enduranoe testing machine (diagrammatic), 7 Provided by IHSNot for R
33、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL- W-Z1632(SHIpS) qT J J NOTE: FIT PULLEYS WITH SUITABLE BAU OR ROLLER BEALRINOS. “O“ SNOULD BE BORED AND QROUND TO UQHT PRESS FIT FOR BEARINOB. “A“ BORE Of MARINO AS RECEIVED. WTERIAl: tooL STEIL. MAT TREAT: HARDEN TO ROCKW
34、ELL 0-60 MINIMUM. DlWN8K)NS of STEEL WLLEYS USED IN ENDURANCE TESTS, I I I PULLEY DIMENSIONS J/ RATIO OF WLLLY DIAMETER D“ TO NOMINIY ROPE DIAWER. t Figure 2 - Endurane test pulley. applied during the manufacture of the rope, shall not be permitted either before or during the endurance test. 4.3,3.4
35、 Breaking strength after endurance test. - “he breaking strength, after the endurance test (see 4.3.3.3) shall be determined by the method specified for determining the breaking strength of rope (see 4.3.3,2) except that the specimen for this test shall be so selected as to determine the breaking st
36、rength of a portion of the rope that has been subjected to reverse bending by contact with a test pulley. 4, 3.3.3,l The application of lubricant to the endurance test sample, in addition to the lubricant 4.3.3.5 Determination of diameter. - The determination of the diameter of nylon covered wire ro
37、pe shall be made at the free end of the rope on the shipping reel. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-J MIL-U-21632 40 m 9999906 0419465 7 = MIL-W-Z?632(SHTPS) _ 4.3.3.5.1 When measuring the diameter there shall be no load on the rope.
38、 Beginning not less than 5 feet from the end of the rope, the diameter shall be measured at three places not !ess than 5 feet apart with a suitable device such as a machinists caliper square. The average of these diameters shall not exceed that specified in 3.4.1. 4.4 Rejection and retests. - 4.4.1
39、Rejectiorl. - The failure of any specimen shall be cause for the rejection of the lot . represented. 4.4.8 Retest. - The manufacturer may, at his own expense, in the presence of the inspector, sample each length of rope comprising a rejected lot and subject specimens from these samples to retest. Th
40、e inspector may accept lengths of wire rope shown to conform to all requirements of this specification by this retest. in accordance with General Specdications for Inspection of Material. 4.5 Inspection procedure. - For Naval purchases, the general inspection procedures shall be 5. PREPARATION FOR D
41、ELIVERY 5.1 The wire rope shall be closely wound on wooden reels, full length, of one class and size to a reel. The imer and outer ends of the rope shall be securely attached to the reel. 5.2 Packaging. - Before starting to wind the wire rope on the reel, a layer of waterprzof barrier- E material, i
42、n accordance with Specification W-P-271, and then a layer of greaseproof paper, in accord- ance with Specification MIL-B-121, shall be applied to the barrel of the reel and the inside of the flanges against which the wire rope will subsequently rest, After the wire rope is wound on the lined reel, a
43、 layer of greaseproof paper, in accordance with Specification MIL-B-121, then a layer of waterproof paper, in accordance with Specification W-P-271, shal! be applied and fastened by 3 or more wooden lagging strips and 2 metal straps. The metal strapping sha!l conform to Specification 6EQ-S-781 or QQ
44、-S-790. 5.3 Packing.- 5.3.1 Level A. - When overseas packing is specified in the contract or order, each packaged reel shall be lagged with a layer of lumber in a manner that the waterproof barrier-material is not exposed to forzes which may cause mechanical damage. 5.3.2 Level B. - For domestic pac
45、king, no additional packing is necessary. 5.4 Marking. - Shipments shall be marked in accordance with Standard MIL-STD-129. Item name for this material is “Wire Ropes, Steel, Bare and Nylon Covered-Corrosion-Resisting, Flexible, Preformed, Oceanographic and Bathythermographic”. 8. NOTES 6.1 Intended
46、 use. - The wire rope covered by this specification is intended for oceanographic and bathythermographic use. 6.2 Ordering data. - Procurement documents should specify the following: (a) Title, number, and date of this specification. () Class required (see 1.2). (c) Diameter required (see table m).
47、(d) Length required (see 3.3.3 and 3.4.3). (e) Size of lot for wire (see 4.2.1). (f 1 Selection of applicable level of packing (see 5.3). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Notice. - When Government drawings, specifications, or other d
48、ata are used for any purpose other than in connection ;Kith a definitely related Government procurement operation, the United States Gov- f ernment thereby incurs no responsibility nor any obligation whatsoever; and the fact that the Govern- ment may have formulated, furnished, or in any way supplie
49、d the said drawings, specifications, or other data is not to be regarded by implication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. Preparing activity: Navy- Bureau of Ships (Project 4010-0003Sh) 10 Provided by IHSNot for ResaleNo reproduction or networ
