1、Designation: E674 12 (Reapproved 2016)Standard Specification forIndustrial Perforated Plate and Screens (Round OpeningSeries)1This standard is issued under the fixed designation E674; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONIndustrial perforated plate can be produced in many thousands of combinations of size and shapeof opening
3、, bar size, thickness of material, and type of metal. Such variety is often confusing and, tothe vast majority of perforated plate users, unnecessary, since each usually requires only a very fewspecifications.The purpose of this specification is to simplify this problem by a condensed table of recom
4、mendedspecifications covering a wide range of openings in which industrial perforated plate is made, withseveral recommended bar sizes and thicknesses of plate for each opening, for use in various grades ofservice.By making selections from this specification, the user will be guided to specification
5、s that are beingregularly produced, thus avoiding inadvertent selection of specifications that, because of little or nodemand, are unobtainable, except on special order (usually quite expensive unless the quantity orderedis sufficient to justify the cost of special tooling).If a user has a specific
6、application for industrial perforated plate that can not be solved by a selectionfrom this specification, it is recommended that he consult his perforated plate supplier on theavailability of an acceptable alternative specification.1. Scope1.1 This specification covers the sizes of round openingperf
7、orated plate and screens for general industrial uses, includ-ing the separating or grading of materials according to desig-nated nominal particle size, and lists standards for openingsfrom 5 in. (125 mm) to 0.020 in. (500 m) punched with barsizes and thicknesses of plate for various grades of servic
8、e.Methods of checking industrial perforated plate and screens areincluded as information in Appendix X3.1.2 This specification does not apply to perforated plate orscreens with square, hexagon, slotted, or other shaped open-ings.1.3 The values stated in inch-pound units are to be regardedas standard
9、. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standa
10、rd to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E323 Specification for Perforated-Plate Sieves for TestingPurposesE1638 Terminology Relating to Sieves, Sieving Methods,and Scre
11、ening Media2.2 ISO Standards:3ISO 2194 Industrial screens Woven wire cloth, perforatedplate and electroformed sheet Designation and nominalsizes of openings1This specification is under the jurisdiction ofASTM Committee E29 on Particleand Spray Characterization and is the direct responsibility of Sub
12、committee E29.01on Sieves, Sieving Methods, and Screening Media.Current edition approved July 1, 2016. Published July 2016. Originally approvedin 1979. Last previous edition approved in 2012 as E674 12. DOI: 10.1520/E0674-12R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or
13、contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, Case postale 56, CH-1211, Geneva 20, S
14、witzerland, http:/www.iso.ch.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 Other Documents:Fed. Std. 123 Marking for Shipments (Civil Agencies)4Mil-Std-129 Marking for Shipment and Storage43. Terminology3.1 DefinitionsFor genera
15、l terms related to sieves, sievingmethods, and screening media, see Terminology E1638.3.2 Definitions of Terms Specific to This Standard:3.2.1 aperture, nthe opening in a screening or sievingmedium.3.2.2 bar, nthe metal between perforations.3.2.3 blank, nunperforated area located other than alongthe
16、 perimeter of a plate.3.2.4 break-out, nterm applied to the action that occursahead of the punch in its going through the plate.3.2.4.1 DiscussionThe fracturing of the material results ina tapered hole with the small dimensions on the punch side.3.2.5 centers, ndimensional sum of one perforation and
17、one bar or the dimensional distance from the center of oneperforation to the center of an adjacent perforation.3.2.6 die side, nsurface of the plate that was against thedie during the punching operation.3.2.7 finished end pattern, ncondition that occurs withsome specifications of staggered pattern p
18、erforations as a resultof tool design in which the pattern is completed on both endsof the plate (Fig. 1).3.2.8 gage (also gauge), na number designating a specificthickness of metal sheet tabulated in a standardized series, eachof which represents a decimal fraction of an inch.3.2.9 margin or border
19、, nunperforated area located alongthe perimeter of a plate.3.2.10 percent open area, nthe ratio of the total area of theapertures to the total area expressed in percentage.3.2.11 perforated pattern, nthe patterns that the perfora-tions are arranged in, usually in a staggered pattern withmidpoints no
20、minally at the vertices of isosceles triangles orsquare patterns arranged in line with their midpoints nominallyat the vertices of squares.3.2.12 screen, n(1) surface provided with apertures ofuniform size and shape; (2) another term used interchangeablyfor woven wire cloth; (3) machine provided wit
21、h one or morescreen surfaces.3.2.13 screening, vprocess of separating a mixture ofdifferent sizes by means of one or more screen surfaces.3.2.14 smooth side or punch side, nsurface of the platethat was uppermost during the punching operation and throughwhich the punch entered the plate.3.2.15 unfini
22、shed end pattern, ncondition that occurs withsome specifications of staggered pattern perforations as a resultof tool design.3.2.15.1 DiscussionOn one end of the plate, the patternwill appear to be incomplete as a result of unperforated holesin the even numbered rows, while on the other end of the s
23、ameplate, the pattern will appear to be incomplete because ofunperforated holes in the odd numbered rows (Fig. 2).4. Standard Specifications4.1 Standard specifications for industrial perforated plateand screens are listed in Table 1.4.2 OpeningsThe series of standard openings listed inTable 1 includ
24、e those of the USA Standard Sieve Series,Specification E323, and those of the ISO apertures for indus-trial plate screens, ISO 2194, with the addition of thoseopenings in common usage.4.3 Relationship of GradesThe purpose of the severalgrades is to provide combinations of opening and bar size forvar
25、ious types of service, from medium-light to heavy. Since itis possible to vary the bar size independently from the platethickness, each of the service grades lists up to three combi-nations of bar and gage for each opening. The entire standardseries has been designed for a logical relationship of ba
26、r size toopening in each grade and between grades with the capabilityof also being able to vary the plate thickness.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.FIG. 1 Finished End Pattern FI
27、G. 2 Unfinished End PatternE674 12 (2016)2TABLE 1 USA Standard Specifications for Industrial Perforated Plate and Screens (Round Opening Series)(U.S. Customary Units)PerforatedOpeningMedium Light Medium Medium Heavy HeavyStan-dard(metric),mmUSAIndus-trialStan-dard,in.Open-ing,in.Bar,in.Gage-Steel,in
28、.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%125 5 51212 74.9 55858 71.6 53434 68.5 5 1 1 62.9125 5 55838 71.6 53412 68.5 57858 65.6 5 11878 60.4125 5 55812 71.6 53458 68.5 57834 65.6 5 118 1 60.4. . 41212
29、12 73.4 4125858 69.9 4123434 66.6 412 1 1 60.7. . 4125838 69.9 4123412 66.6 4127858 63.5 412 11878 58. . 4125812 69.9 4123458 66.6 4127834 63.5 412 118 158106 414 4141212 72.6 4145858 68.9 4143434 65.5 414 1 1 59.4106 414 4145838 68.9 4143412 65.5 4147858 62.3 414 11878 56.7106 414 4145812 68.9 4143
30、458 65.5 4147834 62.3 414 118 1 56.7100 4 41212 71.6 45858 67.8 43434 64.341158100 4 45838 67.8 43412 64.3 47858 61 4 11878 55.2100 4 45812 67.8 43458 64.3 47834 61 4 118 1 55.2. . 3341212 70.6 3345858 66.6 3343434 62.9 3347878 59.6. . 3345838 66.6 3343412 62.9 3347858 59.6 334 134 48.9. . 3345812 6
31、6.6 3343458 62.9 3347834 59.6 334 178 48.990 312 3121212 69.4 3125858 65.2 3123434 61.5 3127878 5890 312 3125838 65.2 3123412 61.5 3127858 58 312 134 54.890 312 3125812 65.2 3123458 61.5 3127834 58 312 178 54.8. . 3143838 72.8 3141212 68.1 3145858 63.8 3143434 59.8. . 31412516 68.1 3145838 63.7 3143
32、412 59.8 3147858 56.2. . 3141238 68.1 3145812 63.7 3143458 59.8 3147834 56.275 3 33838 71.6 31212 66.6 35858 62.1 33434 5875 3 312516 66.6 35838 62.1 33412 58 37858 54.375 3 31238 66.6 35812 62.1 33458 58 37834 54.3. . 2343838 70.2 2341212 64.9 2345858 60.2 2343434 55.9. . 23412516 64.9 2345838 60.2
33、 2343412 55.9 2347858 52.1. . 2341238 64.9 2345812 60.2 2343458 55.9 2347834 52.163 212 2123838 68.5 2121212 62.9 2125858 58 2123434 53.663 212 21212516 62.9 2125838 58 2123412 53.6 2127858 49.763 212 2121238 62.9 2125812 58 2123458 53.6 2127834 49.7. . 2143838 66.6 2141212 60.7 2145858 55.5 2143434
34、 51. . 21412516 60.7 2145838 55.5 2143412 51 2147858 47. . 2141238 60.7 2145812 55.5 2143458 51 2147834 4753 218 218516516 68.9 2183838 65.5 2181212 59.4 2185858 54.153 218 2183814 65.5 21812516 59.4 2185838 54.1 2183412 49.553 218 21838516 65.5 2181238 59.4 2185812 54.1 2183458 49.550 2 2516516 67.
35、8 23838 64.3 21212 58 25858 52.650 2 23814 64.3 212516 58 25838 52.6 23412 47.950 2 238516 64.3 21238 58 25812 52.6 23458 47.9. . 178516516 66.6 1783838 62.9 1781212 56.5 1785858 51. . 1783814 62.9 17812516 56.5 1785838 51 1783412 46.2. . 17838516 62.9 1781238 56.5 1785812 51 1783458 46.245 134 1345
36、16516 65.2 1343838 61.5 1341212 54.8 1345858 49.245 134 1343814 61.5 13412516 54.8 1345838 49.2 1343412 44.445 134 13438516 61.5 1341238 54.8 1345812 49.2 1343458 44.4. . 1581414 68.1 158516516 63.7 1583838 59.8 1581212 53. . 158516316 63.7 1583814 59.8 15812516 53 1585838 47.3. . 15851614 63.7 1583
37、8516 59.8 1581238 53 1585812 47.337.5 112 1121414 66.6 112516516 62.1 1123838 58 1121212 5137.5 112 112516316 62.1 1123814 58 11212516 51 1125838 45.137.5 112 11251614 62.1 11238516 58 1121238 51 1125812 45.1E674 12 (2016)3TABLE 1 ContinuedPerforatedOpeningMedium Light Medium Medium Heavy HeavyStan-
38、dard(metric),mmUSAIndus-trialStan-dard,in.Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%Open-ing,in.Bar,in.Gage-Steel,in.OpenArea,%. . 1381414 64.9 138516516 60.2 1383838 55.9 1381212 48.7. . 138516316 60.2 1383814 55
39、.9 13812516 48.7 1385838 42.8. . 13851614 60.2 13838516 55.9 1381238 48.7 1385812 42.831.5 114 1141414 62.9 114516516 58 1143838 53.6 1141212 46.231.5 114 114516316 58 1143814 53.6 11412516 46.2 1145838 40.331.5 114 11451614 58 11438516 53.6 1141238 46.2 1145812 40.3. . 1316316316 67.6 13161414 61.8
40、 1316516516 56.8 13163838 52.3. . 131614 8 61.8 1316516316 56.8 13163814 52.3 131612516 44.9. . 131614316 61.8 131651614 56.8 131638516 52.3 13161238 44.9. . 118316316 66.6 1181414 60.7 118516516 55.5 1183838 51. . 11814 8 60.7 118516316 55.5 1183814 51 11812516 43.4. . 11814316 60.7 11851614 55.5 1
41、1838516 51 1181238 43.426.5 1116 1116316316 65.5 11161414 59.4 1116516516 54.1 11163838 49.526.5 1116 111614 8 59.4 1116516316 54.1 11163814 49.5 111612516 41.926.5 1116 111614316 59.4 111651614 54.1 111638516 49.5 11161238 41.925 1 1316316 64.3 11414 58 1516516 52.6 13838 47.925 1 114 858516316 52.
42、6 13814 47.9 112516 40.325 1 114316 58 151614 52.6 138516 47.9 11238 40.3. .1516316316 62.915161414 56.41516516516 5115163838 46.2. .151614 8 56.41516516316 5115163814 46.2151612516 38.5. .151614316 56.4151651614 51151638516 46.215161238 38.522.47878316316 61.5781414 54.878516516 49.2783838 44.422.4
43、787814 8 54.878516316 49.2783814 44.47812516 36.722.4787814316 54.87851614 49.27838516 44.4781238 36.7. .1316316316 59.8 13161414 53 1316516516 47.2 13163838 42.4. .131614 853316516316 47.2 13163814 42.4 131612516 34.7. .131614316 53 131651614 47.2 131638516 42.4 13161238 34.7193434316316 58341414 5
44、134516516 45.1343838 40.319343414 85134516316 45.1343814 40.33412516 32.619343414316 513451614 45.13438516 40.3341238 32.6. .1116316316 55.911161414 48.71116516516 42.811163838 37.9. .111614 8 48.71116516316 42.811163814 37.9111612516 30.3. .111614316 48.7111651614 42.8111638516 37.911161238 30.3165
45、858532 85858316316 53.6581414 46.258516516 40.3165858316 10 53.65814 8 46.258516316 40.3583814 35.4165858316 8 53.65814316 46.25851614 40.35838516 35.4. .916532 8 55.5916316316 519161414 43.4916516516 37.4. .916316 10 5191614 8 43.4916516316 37.49163814 32.6. .916316 85191614316 43.491651614 37.4916
46、38516 32.613.21732 . . . . . . . .1732532316 54.1173273214 45.413.21732 . . . .1732532 10 54.11732732 8 45,417321132316 33.413.21732 . . . .1732532 8 54.11732732316 45.41732113214 33.412.512 . . . . . . . .12316316 47.9121414 40.312.512 . . . .12316 10 47.91214 8 40.312516316 34.312.512 . . . .12316 8 47.91214316 40.31251614 34.3. . . . . .153218 8 56.51532532316 50.9153273214 42.
