1、MIL-STD-289A 2 December 1968 SUPERSEDING MIL-STD-289 26 August 1955 MILITARY STANBARB VISUAL INSPECTION GUIDE FOR RUBBER SHEET MATERIAL Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-,_,- MIL-STD-289A 2 December 1968 DEPARTMENT OF DEFENSE WASHINGTON
2、, D.C. 20301 VISUAL INSPECTION GUIDE FOR RUBBER SHEET MATERIAL MTL-STD-289A 1. This Military Standard is mandatory for use by all Departments and Aqencies of the Department of Defense. 2. Recommended corrections, additions; OP deletions should be addressed to the Naval Ship Engineering Center, Depar
3、tment of the Navy, Washington, D. C, 20360. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 Decemher 1968 FOReWARil Governmerlt material procurement specifications have been primarily concerned with detailin? composition, construct.
4、ion and necessary physical requirements. This document is issued as a practical yardstick which inspectors will use ta appraise visually the quality of rubber material. In such a diverse industry as that of rubber manufacturing, individual plants vary considerably in their production andquality cont
5、rol techniques. Defects are likely to occur from many causes such as variation in the quality sf the basic materials, manufacturing processes, finishing operations, and stawarJe conditions. Therefore, the quality generalizations used in this document must sf necessity cover a considerable range whic
6、h represents the best available judgement. iii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-287A 73 9.7777bh 00157LL O MIL-STB-289A 2 December 1968 CONTENTS Page Paragraph 1 . 1.1 1.2 2 . 2.1 3.1 3.2 4 . 5 . 5.1 5.2 Table 1 . II . Figure 1
7、 . 2 . a 0 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . 13 . 14 . 15 . 16 . 19 . 18 . 19 . 20 . 21 . 2% . 23 . 24 . 25 . 26 e 29 . 28 . 29 . 30 . 31 o 32 . SCOPE . Scope REFERENCED DOCUMENTS Purpose Standards DEFINITIONS Defects . Word descriptions . . GENERAL . DETAIL REQUIREMENTS Sampling Identification
8、 marking . . TABLES Figures showing defects and classification Classification of visual defects . FIGURES Pockmark -major Pock mark . slightly deeper than a cloth impression . minor . . Surface void . face stock missing . major . Surface void . slightly rougher than a cloth impression . minor Moistu
9、re pocket . face stock.missing . major . Pick-off . face stock missing . major . Trapped air . face stock.missing . major . Trapped air . face stock missing.- major . Pricker marks . no internal.voids . minor . . e e e . . e . . Liner wrinkle . major Overlap liner wrinkle . major . Liner wrinkle . m
10、hor Stuck liner . major Stuck liner . slightly rougher than a cloth impression . minor . Press-change (liner) . major . Press change . pattern slightly out of phase . . not a defect . . Air blister (peg used to accentuate) . major BrQken blister . major Collapsed blister (void) . major . Folded over
11、 blister . major . . Surface blemish . ao Voids-or protrusions . not.a.defect. a . . Fold.over -major . Surface lumps . major . Foreign material . major . Foreign material . major . Misplaced fabric (end view) . major Porosity . (top view) . major Porosity (end view) major . Delamination (end view)
12、.- major . Delamination (end view) . major Heat blister . major . Misplaced fabric (top view) -.major 1 1 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 29 28 29 30 31 32 33 34 35 43 iV Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
13、m IHS-,-,-MIL-STD-289A 2 December 1968 1. SCOPE 1.1 Scope. This document covers only visual efects for conventional rubber. sheet material, from which gaskets, and similar items are cut. This standard is not applicable to cellular rubber , coated fabrics, cast. plastisol, or latex films. 1.2 Purpose
14、, The primary objective of this document is to present word descriptions and photographs of possible defects in rubber sheet material that nay be presented for inspection. In addition it provides a training aid for inspectors. 1.2.1 In qeneral, this document is not intended to Cake the place of a pa
15、rticular inspection procedure aid which may be provicke for inspectors to verify conformance with a particular specification. The quality requirements specified in the basic specification are governing. 2. REFERENCED DOCUMENTS 2.1. The issues of the following docunents in effect on the date of invit
16、ation for bids form a part of this standard to the extent s?ecified herein, STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-177 - Rubber Products, Terms for Visible Defects of. MIL-STD-190 - Identification Fiarking of Rubber Products, (Copies of
17、specifications , standards, drawings, and publications required by suppliers in connection with specific procurement fuxctiens should be obtained from the procuring activity or as directed by the ccntracting officcr.) 3. DEFINITIONS 3.1 Defects.- The categories, major and minor defects, are as defin
18、ed in MIL-STD-105. 3.2 Word descriptions. Word descriptions of visible defectc used in this standard are in accordance with MIL-STD-177. 4. GENERAL 4.1 Enlarged photographs of representative major and minor defects are included to aid the inspectors. All photographs are listed in order in ?!able I (
19、Fiqures -Showing Defects and Classification). Table II, (Classification of Visual Defects) is indexed according to type of defect, of defect (rriajor or minor) , and figure number. 4.2 This standard inclucks photographs of oly the most commn surface defects that might occur during fabri.ca.Lion. It
20、 is not feasih1.a tn obtain examples of all possible defects, the defects mentioned in this rtar:dsr-:l do not abrogate requirements of a particular specification, contract or order. 5. DETAIL RXQUIF?EMEMTS 5.1 cmplinqL All sheet material shall h sat, or hatch shall be on the same basis as 5.1. It i
21、s rmognized that the rejection of a long length of material for one defect may result in an appreciable increase in the cost: of production not commensurate with the degree of protection afford.ed the user. Therefore, .provided the concurrence of t.he technical- ageficy or service concerned (on prim
22、es) or the endorsing inspection service (on subs) is obtained, it wiil be permissible to make a complete transverse cutout to remove major defective materials. Unless otherwise specified , no separate pieces in any une roll. liece in the roll shall be less than five feet lang and there shall. be no
23、more than three 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 Figure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Table I - Figures Showing. Defects and Classification. Defect
24、s and Classification Pock mark 9 major. pock mark - slightly deeper than a cloth impression - minor. Surface void 7 face stock missing - major. Surface void - slightly rougher than a cloth impression - minor. Moisture pocket - face stock missing - major. Pick-off - face stock missing - major. Trappe
25、d air - face stock missing - majof. Trapped air - face stock missing - major. Pricker marks - no internal voids - minor. Liner wrinkle - major. Overlap liner wrinkle - major. Liner wrinkle - minor. Stuck liner - major. Stuck liner - slightly rougherthan a cloth impression - minor. Press change (line
26、r) - major. Press change - pattern slightly out of phase - not a defect. Air blister (peg used to accentuate) - major. Broken blister - major. Collapsed blister (void) - major. Heat blister - major. Folded over blister - major. Surface blemish - no voids or protrusions - not a defect. Fold over - ma
27、jor. Surface lumps - major. Foreign material - major. Foreign material - major. Misplaced fabric (top view) - major. Misplaced fabric (end view) - major. Porosity (top view) - major. Porosity (end view) - major. Delamination (end view) - major. Delamination (end view) - major. 2 Provided by IHSNot f
28、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 Table II - Classification of Visual Defects. Defect ?ock mark ?ock mark - slightly deeper than a cloth impression zlrface void - face stock missing Surface void - slightly rougher than a cloth
29、Yoisture pocket - face stock missing Yoisture pocket - face stock missing (small) Pick-off - face stock missing Pick-off - face stock missing (small) Prapped air - face stock missing Frapped air - slightly rougher than a cloth impression Pricker marks - no internal voids Liner wrinkle Liner wrinkle
30、- fine surface lines Overlap liner wrinkle Stuck liner Stuck liner - slightly rougher than a cloth impression Press change (liner) Press change (liner) slightly rougher than a cloth Press change - pattern slightly out of phase Press change - pattern completely out of phase Air blister (delamination)
31、 Broken blister Woken blister - slightly rougher than a cloth Collapsed blister (void) Collapsed blister (void) - slightly rougher than Heat blister Heat blister - slightly rougher than a cloth Folded over blister impression Folded over blister - slightly rougher than a cloth impression Surface blem
32、ish - cured down blister. No voids or protrusions Fold over Fold over - slightly rougher than a cloth impression Surf ace lump Surface lump - slightly rougher than a cloth impression Foreign material Foreign material (small) impression impression impression a cloth impression Misplaced or broken fab
33、ric porosity, any degree Delamination, any degree Misidentification - Custodians : Army - MR N?V - SH Alr Force - 11 Review activities : Army - MR, WC Navy - SH Air Force - 11, 82 Major X X X X X X X X X Not i X X X X X X - Minor Figure Number X X X X X X X. X X defect X X X X 9 Not a defect 1 2 3 4
34、 5 Not shown but see Figure 9 for size Not shown but see Figure 9 for size 7 and 8 6 Not shown 9 lo 12 11 13 14 15 Not shown 16 Not shown 17 18 Not shown 19 Not shown 20 Not shown 21 Not shown 22 23 Not shown 24 Not shwn 25 and 26 Not shown but see Figure 9 for size 27 and 28 29 and 30 31 and 32 Not
35、 shown t i Preparing activity : Navy - SH (Project 9320-0104) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STB-287A 73 7377911 OBL59L5 B MIL-STD-289A 2 December 1968 . 4 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
36、thout license from IHS-,-,- MIL-STD-287A 73 7777933 OOL57Lb T MIL-STII-289A 2 December 1968 “I -t - 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 6 Provided by IHSNot for ResaleNo reproduction or networking permitted
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38、A 2 December 1968 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-ZB7A 73 7777733 003s72L 3 MIL-STD-289A 2 December 1968 10 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-STD-2BSA 73
39、99977LL 0035722 5 MIL-STD-289A 2 December 1968 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 12 k O i h Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 De
40、cember 1968 13 h O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 k al f Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 15 Provided by IHSNo
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43、king permitted without license from IHS-,-,-MlL“Tb289A 2 December 1968 Q) 4J KI V rd c, O I f Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-ST
44、D-289A 2 December 1968 k O I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-289A 2 December 1968 23 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-2e9A 2 December- l96$ k en O cd E 2
45、4 r I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD.289A 2 December 1968 1 25 k O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-287A 93 7937733 0835337 9 MIL-STD-2SA 2 December 1968 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
