DLA MIL-C-4232 D-1971 CORD RAYON WITHOUT CORE BRAIDED《辫状无芯人造纤维绳索》.pdf
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1、1- -I_ MIL-C-4232D 40 = 777790b 0073377 4 M1 L- C- 4 2 3 2 I) MIL- C- 4 2 37 C 9 February 1968 MI LIT AKY SPECIFICATION CORD, RAYON, WITHOUT CORE, BRAIDED This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.- This specification cov
2、ers braided rayon cord (see 6.1). 1.2 Classification.- The cord shall be of the following types as speci- fied (see 6.2): Type I - 400 pounds minimum breaking strength. Type II - 1000 pounds minimum breaking strength. Type III - 1500 pounds minimum breaking strength. 2. APPLICABLE DOCUMENTS 2.1 The
3、following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: SP ECI FI CAT IONS FEDERAL UU-T-81 - Tags, Shipping and Stock. MILITARY MIL-C-3131 - Cordage; Preparation for Delivery of. STAEDARDS F
4、EDERAL FED-STD-191 - Textile, Test Methods MILITARY MIL-STD-105 - Sampling Procedures aid Tables for Inspection by Attributes Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4232D (Copies of specifications, standards, drawings, and publications
5、 required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting off i Cer. ) 3. REQUIREMENTS 3.1 Government and supplier purchases.- The requirements specified in 3.5 and 3.6 apply only to cord purchased direct
6、ly by the Government. All other requirements apply to cord purchased by a supplier as a component for an end item and to cord purchased directly by the Government. 3.2 Material.- The yarn used in the fabrication of the cord shall be high tenacity viscose rayon 3.0 to 4.6 grams per denier. each basic
7、 yarn shall be 1100 minimum. No chemical finishes or treatments shall be applied to specifically increase the weight or breaking strength. The denier of * 3.3 Construction and physical requirements.- The braided cord shall conform to the construction and physical requirements specified in table I wh
8、en tested as specified in 4.2.5. The cord shall be braided on braiding machines having the number of carriers (strands) specified in table I, and the machines shall be so regulated as to give a two over nnd two under conventional stitch i.e. each carrier alternating with the next carrier in directio
9、n and each strand passes alternately over and under two of the opposite strands (see 4.2.1). * 3.3.1 In the manufacture of the cord, no more than one carrier shall be When carrier ends run of they allowed to be run off per 50 feet of cord. shall be spliced a distance of 10 inches 5 1 inch in length.
10、 center of each splice shall be marked by inserting a red thread (of another fiber type) through the braid. approximately three inches on either side of the cord. shall be accomplished by a light pull on either end. The marker shall not be removed until such time as the cord is to be used in the man
11、ufacture of parachute suspension lines or other applications (see 4.2.1 and 6.1). The approximate The free ends of th emarker shall extend Removal of the marker TABLE I.- Construction and physical requirements TYPe Type Type Characteris tic I 11 III Yarn ply 1 1 1 Picks per inch: Minimum Maximum 9 5
12、9 10 5-1/2 Nuniber of carriers 16 16 Length per pound, feet (minimum) 126 60 3-1/2 4 16 39 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-4232D - 40 W 9999906 0097399 8 W MIL-C-4232D TABLE I.- Construction and physical requirements (contd)
13、me Type Type Characteris tic I II III Breaking strength, pounds (minimum) 40 O 1000 1500 Elongation, percent - (minimum) 14 12 3.4 Color.- Unless otherwise specified (see 6.2), the cord shall be furnished in natural color or tinted methyl orange. 3.5 Put-up.- Unless otherwise specified (see 6.2), th
14、e cord shall be furnished in 525-yard spools (reels) and shall be wound so that each turn and layer is free from entanglement. Each spool (reel) shall contain not more than three pieces and no piece shall be less than 5 yards in length. A plus tolerance of 10 percent shall be allowed on the length o
15、f spool (reel) specified. The ends of all cord shall be taped, served or otherwise secured to prevent fraying. joining of cord ends to form 8 continuous length of cord. There shall be no knot, splice or otherwise * 3.6 Identification.- Each spool (reel) of cord shall have a ticket (identification ta
16、g) or label attached to it for identification purposes, The ticket shall conform to the requirements for type E, class 1, size 4 or 5 of -T-81. The ticket shall be made of not less than 15 point paper stock and shall have a minimum tearing resistance of both directions (total) of 850 grams when test
17、ed as specified in -T-81. When labels are used, the label shall be attached in such a manner as to remain in place and be clearly legible until all cord has been removed. All ticket or label entries shall be legibly printed, stamped, or typed with water insoluble ink. The ticket or label shall conta
18、in the following information: Stock number Nomen cl at Ure Specification number Leng th and type Contract number and date Date of manufacture (month and year) Suppliers name 3.7 Workmanship.- The braided cord shall conform to the quality and grade of product established by this specification. The oc
19、currence of defects shall not exceed the applicable acceptable quality levels. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.- MIL-C-423ZD 40 7977706 0097400 O - - MIL-C-4232D 4. QUALITY ASSURANCE: PROVISIONS 4.1 Responsibility for inspection.-
20、Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of aU inspection requirements as specified herein. specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection req
21、uirements specified herein, unless disapproved by the Government. The Government reserves the right 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. Except as otherwise 4.1
22、.1 Certificate of compliance.- Where certificates of compliance are submitted, the Government reserves the right to check test such items to determine the validity of the certification. 4.2 Inspection.- Sampling for inspection shall be performed in accord- ance Kith MIL-STD-105, except where otherwi
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