ASTM_E_1638_-_13.pdf

Designation:E163813Standard TerminologyRelating to Sieves,Sieving Methods,and Screening Media1This standard is issued under the fixed designation E1638;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.INTRODUCTIONParticle size analysis through the use of standard test sieves,and particle separation through the useof screening media,are commonly 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 on Sieves,Sieving Methods,and Screening Media,this is an ongoingprocess 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 terminology 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 separating 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 generally not included.2.Referenced Documents2.1 ASTM Standards:2E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE161 Specification for Precision Electroformed SievesE454 Specification for Industrial Perforated Plate andScreens(Square Opening Series)E674 Specification for Industrial Perforated Plate andScreens(Round Opening Series)E2016 Specification for Industrial Woven Wire ClothE2427 Test Method for Acceptance by Performance Testingfor SievesE2589 Terminology Relating to Nonsieving Methods ofPowder CharacterizationE2814 Guide for Industrial Woven Wire Filter Cloth3.Terminology3.1 Definitions:agglomerate,ntwo or more particles adhering together.E1638aperture,nthe opening in a screening or sieving medium.E11aperture size,nthe dimension defining an opening in ascreening or sieving medium.E11bar,nthe metal between perforations.E454,E674blank,nan unperforated area located other than along theperimeter of a plate.E454,E674bolting grade wire cloth,nwire cloth meeting a group ofspecifications that are typical for higher sifting capacitiesand which can speed the bolting action of vibratory screen-ing machines,manufactured based on using a limited num-ber of wire diameters for a large group of mesh designations.E2016DISCUSSION“Bolting Grade”designations are often misused;andshould not be specified without a wire diameter,as the designationshave become non-standard.break-out,va term applied to the action that occurs ahead ofthe punch in its going through the plate.E454,E6741This terminology is under the jurisdiction ofASTM Committee E29 on Particleand Spray Characterization and is the direct responsibility of Subcommittee E29.01on Sieves,Sieving Methods,and Screening Media.Current edition approved June 1,2013.Published July 2013.Originally approvedin 1994.Last previous edition approved in 2012 as E1638 12.DOI:10.1520/E1638-13.2For 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 onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 DISCUSSIONThe fracturing of the material results in a tapered holewith the small dimensions on the punch side.bubble point test,ncapillary flow bubble point methods arebased on the fact that the pressure required to force an airbubble through filter cloth wetted under a test liquid ofknown surface tension is inversely proportional to the poresize.E2814DISCUSSIONThe pressure observed at the first bubble location isconsidered the absolute micron retention rating.bulk density,nthe mass per unit volume of a material,including voids inherent in the material as tested.E1638calibration test sieve,na test sieve manufactured usingsieve cloth which has been inspected after being mounted inthe sieve frame,and that meets the requirements in accor-dance with Specification E11,Table 1,in part based on thestandard deviation of the number of sample openings in thetest sieve(Column 11)not exceeding the maximum allow-able for a confidence level of 99.73%(Column 12).E11centers,nthe dimensional sum of one perforation and oneba