1、Designation: E 1638 09Standard TerminologyRelating to Sieves, Sieving Methods and Screening Media1This standard is issued under the fixed designation E 1638; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONParticle size analysis through the use of standard test sieves, and particle separation through the useof screening media, are comm
3、only adopted methods of achieving desired process specificationsrelated to particles. To ensure a better understanding of sizing and separation systems and processesand to ensure appropriate comparison of data, terminology common to the processes must bedocumented and defined.For Subcommittee E29.01
4、 on Sieves, Sieving Methods, and Screening Media, this is an on-goingprocess of developing new related terms. Every effort has been made to ensure accuracy, precision,and clarity for the terms included. Suggestions and comments for additions, corrections, and revisionsare welcomed.1. Scope1.1 This t
5、erminology includes all those terms used in all ofthe standards under the jurisdiction of Subcommittee E29.01.Terms are defined that are related to the manufacture ofstandard test sieves and screening media, as well as termsrelated to the methods, analysis, procedures and equipment forsizing and sep
6、arating particles.1.2 Committee E29 on Particle and Spray Characterizationfeels that it is essential to include terms and definitions explicitto the scope, regardless of whether the terms appear in existingASTM standards. Terms that are in common usage and appearin common-language dictionaries are g
7、enerally not included.2. Referenced Documents2.1 ASTM Standards:2ASTM STP 447B Manual on Testing Seiving Methods2.2 ISO Standard:3ISO 2395 Test Sieves and Test SievingVocabulary.3. Significance and Use3.1 This terminology contains terms used in the descriptionand procedure of analysis of the size of
8、 particulate materialsthrough sieve analysis with standard testing sieves and isapplicable to the work of many ASTM technical committees.For a composite listing of published ASTM standards usingstandard testing sieves, Refer to ASTM STP 447B.3.2 While some of the terms appearing in this terminologym
9、ay also be used in the description, procedure, and endproducts of production screening (either on a batch-fed orcontinuous basis), it is the intent of this terminology to presentthe definitions and usage of terms strictly in the context ofsieve analysis using standard testing sieves.4. Terminology4.
10、1 Definitions:agglomerate, ntwo or more particles adhering together.aperture size, nthe dimension defining an opening in ascreening or sieving medium.bulk density, nthe mass per unit volume of a material,including voids inherent in the material as tested.cumulative oversize distribution graph, na gr
11、aph obtainedby plotting the total (cumulative) percentage by the massretained on each of a set of sieves versus the correspondingaperture sizes.cumulative undersize distribution graph, na graph ob-tained by plotting the total (cumulative) percentage by themass passing each of a set of sieves versus
12、the correspondingaperture sizes.matched test sieve, na test sieve that reproduces theperformance results of a calibration sieve within definedlimits for a designated material.median particle size, nthe particle size at which half thedistribution (by mass, volume, number, etc.) is larger thanand half
13、 smaller than the stated size.1This terminology is under the jurisdiction of ASTM Committee E29 on Particleand Spray Characterization and is the direct responsibility of Subcommittee E29.01on Sieves, Sieving Methods, and Screening Media.Current edition approved March 1, 2009. Published March 2009. O
14、riginallyapproved in 1994. Last previous edition approved in 2007 as E 1638 07a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page
15、onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Copyright by ASTM Intl (all rights rese
16、rved); Tue Apr 7 23:21:53 EDT 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.mesh, nThe number of wires or openings per linear inch or25.4 millimeters, counted from the center of any wire to apoint exactly one inch or 25.4 millimeters dis
17、tant, includingthe fractional distance between either thereof.near size particle, na particle of a size approximately equalto the aperture size of the sieve that may block anopening. ISO/DIS 2395open area, nthe ratio of the total area of the apertures to thetotal area of the sieving or screening med
18、ia, expressed as apercentage.particle size distribution, nin sieve analysis, the percent-ages, by mass or number, of all fractions into which varioussizes of particles are classified.representative sample, na sample taken from a quantity ofmaterial that exhibits the characteristics of the originalma
19、terial from which it was taken.sample, na portion, or part, of a quantity of material.sieve, na plate, sheet, or woven wire cloth, or other device,with regularly spaced apertures of uniform size, mounted ina suitable frame or holder, for use in separating materialaccording to size. The terms sieve a
20、nd screen can be usedinterchangeably.sieve analysis, nthe act of obtaining a particle size distribu-tion using test sieves.test sample, na quantity of material required for use directlyin a testing procedure.test sieve, na sieve that meets all of the minimum require-ments of ASTM Committee E11.5. Ke
21、ywords5.1 particle measurement; particle size; particles; particu-late; screen; screening; sieve; sieve analysis; standard testingsieveThis standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or
22、 withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel tha
23、t your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints
24、(single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).E1638092Copyright by ASTM Intl (all rights reserved); Tue Apr 7 23:21:53 EDT 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.
