NAVY MIL-R-24183 A-1988 ROPE AND YARN PLIED SYNTHETIC FIBER《合成纤维股 钢丝绳及纱》.pdf

1、I INCH-POUND I MIL-R-24 183A( SH) 5 August 1988 SUPERSEDING MIL-R-24183(SHIPS) 29 November 1965 (See 6.6) MILITARY SPECIFICATION ROPE AND YARN, PLIED, SYNTHETIC FIBER This specification is approved for use within the Naval Sea Systems Command, Department of the Navy, and is available for use by all

2、Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers rope and yarn to be used as ratline, seizing, marline, houseline and roundline. 1.2 Classification. Ropes and plied yarns covered by this specification shall be of the following types and classes, as

3、 specified (see 6.2): Type I - Rope. Class 1 - Ratline and seizing. Type II - Yarn, plied. Class 1 - Marline. Class 2 - Houseline and roundline. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specification and standards. The following specification and standards form a part of this specific

4、ation to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISC) and supplement thereto, cited in the solicitation. Beneficial comments (recommendations, addi

5、tions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval.Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) a

6、ppearing at the end of this document or by letter. AMSC NIA FSC 4020 DISTRIBUTION STATEMENT A Approved _- L for public _ release; distribution unlimited - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-R-24L83A 40 a 7779906 OL0427L 3 MIL-R-24 1

7、83A( SII) SPECIFICATION MILITARY MIL-C-3131 - Cor,age; Packaging of. STANDARDS FEDERAL FED-STD-191 - Textile Test Methods, MIL IT ARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-147 - Palletized Unit Loads. Attributes. (Copie

8、s of specifications and standards required by contractors in connec- tion with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Order of precedence. In the event of a conflict between the text of this specification and t

9、he references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this speci- fication shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtaine

10、d. 3. REQUIREMENTS 3.1 Materials. The ropes and plied yarns covered by this specification shall. be fabricated wholly of virgin synthetic fibers, except nylon and fibers of cellulosic origin. Synthetic fibers of the continuous monofilament or continuous multifilament types may be utilized but not in

11、 combination with each other. The size of the monofilament fibers shall be not greater than 200 denier per filament while the size of the multifilament fibers shall be not less than 4.4 denier. In addition, each fiber type shall be fortified with heat and light stabilizers. 3.2 Construction. 3.2.1 R

12、opes. The ropes, of right hand of Z lay construction, shall consist of three strands, each of which shall be of one size of balanced-twist three-ply yarns and shall conform to the requirements of table I. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS

13、-,-,-NIL-R-24183A LJO m 7777906 OL04272 5 m Tole rance (plus or minus) (inches) PIIL-R-24 183A( SH) TABLE I. Ratline and seizing, type I. Load “Pi 200 x 2 (pounds) Circ., (inches) Feet per pound (min.) at load “Pi (feet) 1/2 3/4 1-1/2 1 1- 1/4 Breaking strength (minimum) (pounds ) i/ 16 i/ 16 i/ 16

14、i/ 16 i/ 16 7 12 20 38 50 185.0 83.5 48.0 30.0 21.0 530 1,050 1,700 2,500 3,350 3.2.2 Yarns. The plied yarns shall be either two-ply or three-ply ZS balanced-twist construction conforming to the requirements of table II. TABLE II. TvDe II. varns of balancec Designation Feet per pound (min.) Number o

15、f plies Feet Marline 2 Marline 2 Houseline 3 Hous el i ne 3 Round line 3 530 260 470 365 165 C I I ply construction. Breaking strength (min.) Pounds 150 500 440 420 7 50 3.3 Nonfibrous material. Extraneous material shall not be added for the purpose of weighing the ropes or plied yarns except colori

16、ng matter which is permissible in sufficient quantity to meet the requirements of 3.5. The moisture content of the ropes or plied yarns shall not exceed 2.0 percent. Finishing materials shall be permitted up to 30 percent of the dry weight of the completed product. The finishing materials shall be r

17、esistant to heat aging and shall not show strength losses greater than 10 percent (see 4.2.5.3). 3.4 Spliceability. The type I ropes shall be spliceable and shall not develop yarn displacement or strand cockles (see 4.2.5.5). 3.5 Color. Unless otherwise specified (see 6-21, the color of the finished

18、 ropes or plied yarns shall match an approved standard shade of OD 7. 3.5.1 Matching. The shade of the finished ropes or plied yarns shall match the standard sample under natural (north sky) daylight or artificial daylight having a color temperature of 7,500 degrees Kelvin and shall be a good approx

19、i- mation to the standard sample under incandescent lamplight at 2,800 degrees Kelvin. o 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-R-24183A 40 W 9979706 0204293. 7 W Circumference ( inches ) 112 314 1 1-114 1-112 PIIL-R-24 183A( SH) Mini

20、mum length Approximate weight (feet) (pounds ) 2,250 15 2,250 28 2,250 48 1,200 40 1,200 60 3.5.2 Colorfastness. The finished ropes and plied yarns shall show fastness to weathering equal to or better than the standard sample after 40 hours exposure in accordance with method 5671 of FED-STD-191. NOT

21、E: per 2 hours. minute shall be standard procedure in the event of dispute. Attention is called to contractors whose equipment operates at one cycle This equipment may continue to be used. However, one cycle per 3.6 Identification ticket. In addition to the requirements specified above, each package

22、 unit of either type I or type II shall have a ticket attachec with string or wire. The tickets shall be made of paperboard not less than 0.020 inch in thickness and the color shall be manila or light in intensity to permit the easy reading of the printed markings. with the following information: Th

23、e ticket shall be legibly printed (a) Stock number (if available). (b) (c) Specification number. (d) Length. (e) Contract number and date. (f) Contractors name. Nomenclature (including type and class). 3.7 Put-up. 3.7.1 Type I. Unless otherwise specified (see 6.2), ratline and seizing shall be furni

24、shed on nonreturnable reels in accordance with table III. Broken length will be permitted, but no piece shall be less than 600 feet when measured in the relaxed condition. The ends shall be cut off squarely and be securely whipped, taped, or heat sealed to prevent fraying or untwisting. The reels sh

25、all be so wound that each turn and layer is free from entanglement. TABLE III. Net weight and length on reels for type I ropes. I I I 1 3.7.2 Type II. Unless otherwise specified (see 6.2), classes 1 and 2, type II plied yarns shall be packaged in 20-pound coils or tubes. The ends shall be cut off sq

26、uarely and be securely whipped, taped or heat sealed to prevent fraying or untwisting. r O a a 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-24 183A( SH) 3.8 Workmanship. The ropes and plied yarns shall be of balanced construc- tion evenly

27、laid in accordance with high grade practice. The individual strands and the finished ropes shall be free from kinks and strand knots. There shall be no broken or loose ends projecting from the surface. There shall be no other manufacturing defects which will affect serviceability of the end product.

28、 The occurrence of defects shall not exceed the applicable acceptable quality levels specified herein. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection

29、requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the ri

30、ght to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth

31、 in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for

32、 acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.2 Quality conformance inspection. Sampling and ins

33、pection shall be performed in accordance with MIL-STD-105, except where otherwise specified. 4.2.1 Inspection of components. Quality assurance provisions for specified components shall be in accordance with the applicable specifications and drawings to the extent applicable. 4.2.2 Examination of the

34、 end item for visual defects. The defects listed in table IV shall be enumerated regardless of their proximity to each other, except where two or more defects represent a single local condition, in which case only the more serious defect shall be counted. The sample unit for this examination shall b

35、e one reel (spool) or coil, whichever is applicable. Ten percent of the gross length contained on each sample unit but not less than 100 feet shall be subjected to the visual examination. The lot size for this examination shall be expressed in units of reels (spools) or coils each. The acceptable qu

36、ality level shall be 1.5 major defects and 4.0 total defects (major and minor combined) per 100 units. The inspection level shall be level I. 5 I h Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Examine Appearance and workmanship Ident if icat ion t

37、icket Color -_- I MIL-R-24183A 40 = 7797906 0304275 O a MIL-R-24 183A( SH) TABLE IV. Visual examination defects. De ect Cut, any (type I and II items) Chafed or damaged, affecting service- ability (types I and 11) Kinks, broken or loose ends (type II only) Kinks, darting yarns, 1/ broken or loose en

38、ds, bulged strands, strand knots (type I only) Other than 3 strands (type I only) Other than 2 ply yarn (type II, Other than 3 ply yarn (type II, Ends not cut off squarely (types I Ends not securely whipped or Omitted, incorrect, illegible, Not as specified Not as specified class i) class 2) and 11)

39、 taped (types I and II) insecurely attached Classification Major X X X X X X X X Minor X X X X - i/ Darting yarns are internal yarns which project through the cover yarns of the strand at intervals along the rope (type I only). 4.2.3 Examination for length and winding. The sample unit shall be one s

40、pool, reel or coil. The inspection level shall be level S-3 and the acceptable q;ality level shall be 4.0 percent defective, fewer units, the sample size shall be 10 and the acceptance number 1. The lot size shall be the number of units in the inspection. Defects shall be as speci- fied in 4.2.3.1 a

41、nd 4.2.3.2. For lots consisting of 500 Gr 4.2.3.1 Defects with regard to length, Defects with regard to length shall be considered to exist in either type I or II material if any of the following are found during inspection: (a) (b) Length of unit less than marked on ticket. (c) Spools, coils or ree

42、ls not in one continuous length. (d) Any length on reels not less than 600 feet (type I only). Length of unit more than or less than specified length, 4.2.3.2 Defects with regard to winding. Defects with regard to winding shall be considered to exist if any of the following are found during inspecti

43、on: (a) Improperly or not firmly wound resulting in kinks, knots, slippage during unwinding or otherwise affecting unwinding of the rope or yarn. 6 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 MIL-R-24L83A 40 7777706 OLOLi276 2 4.2.4 Examinati

44、on of packaging requirements. An examination shall be made to determine conformance to preservation, packing and marking requirements of section 5 of this specification. Defects shall be scored in accordance with the list below. The sample unit shall be one shipping container fully packaged but unse

45、aled. Closure defects listed below shall be examined on shipping containers fully packaged. The lot size shall be the number of containers in the end item inspection lot. O The inspection level shall be S-2 and the AQL shall be 4.0 O Examine Marking (exterior and interior) Mat erialc Wo rkmans hip P

46、reservation Packing Weight Defects Omitted, incorrect, illegible, of improper size, location, sequence or method of application. Any component missing. Any component damaged, affecting service- ability. Inadequate application of components, such as incomplete closure of case- liners, container flaps

47、, loose strapping or inadequate stapling. Bulging or distortion of containers. Not as specified. Spools or reels not secured, as specified. Not as specified. Gross weight in excess of require- ment s. 4.2.5 Testing of the end item. The methods of testing specified in FED-STD-191, wherever applicable

48、 and as listed in table VI, shall be followed. The physical and chemical values specified in section 3 apply to the average of the determinations made on a unit of product for test purposes as specified in the applicable test methods. The sample size, together with the acceptance and rejection numbe

49、rs shall be in accordance with table V. The unit of product for testing shall be 50 feet of rope or yarn. The lot size shall be expressed in units of spools or reels. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-24183A 40 = 799770b 0104277 Y b Number of spools or reels in lot 15 and under 16 to 40 41 to 110 111 to 300 301 to 500 501 and over MIL-R-24 183A( SH) Acce