1、Designation:G7613Standard Test Method forConducting Erosion Tests by Solid Particle ImpingementUsing Gas Jets1This standard is issued under the fixed designation G76;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last re
2、vision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of materialloss by gas-entrained solid particle impingement erosion withjetnozzle type ero
3、sion equipment.This test method may beused in the laboratory to measure the solid particle erosion ofdifferent materials and has been used as a screening test forranking solid particle erosion rates of materials in simulatedservice environments(1,2).2Actual erosion service involvesparticle sizes,vel
4、ocities,attack angles,environments,and soforth,that will vary over a wide range(3-5).Hence,any singlelaboratory test may not be sufficient to evaluate expectedservice performance.This test method describes one wellcharacterized procedure for solid particle impingement erosionmeasurement for which in
5、terlaboratory test results are avail-able.1.2 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard(exceptions below).1.2.1 Exceptions:Table 1 uses HRB hardness.Footnote 7and 11.2 use abrasive grit designations.1.3 This standard d
6、oes not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standa
7、rds:3E122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessG40 Terminology Relating to Wear and Erosion2.2 American National Standard:ANSI B74.10 Grading of Abrasive Microgrits43.Terminology3.1 Definitions:3.1.1 erosionprogre
8、ssive loss of original material from asolid surface due to mechanical interaction between thatsurface and a fluid,a multicomponent fluid,or impinging liquidor solid particles.3.1.2 impingementa process resulting in a continuingsuccession of impacts between(liquid or solid)particles and asolid surfac
9、e.3.2 Definitions of Terms Specific to This Standard:3.2.1 erosion valuethe volume loss of specimen materialdivided by the total mass of abrasive particles that impacted thespecimen(mm3g1).3.2.2 Normalized Erosion Rateerosion value(mm3g1)ofspecimen material divided by erosion value(mm3g1)ofreference
10、 material.4.Summary of Test Method4.1 This test method utilizes a repeated impact erosionapproach involving a small nozzle delivering a stream of gascontaining abrasive particles which impacts the surface of atest specimen.A standard set of test conditions is described.However,deviations from some o
11、f the standard conditions arepermitted if described thoroughly.This allows for laboratoryscale erosion measurements under a range of conditions.Testmethods are described for preparing the specimens,conductingthe erosion exposure,and reporting the results.5.Significance and Use5.1 The significance of
12、 this test method in any overallmeasurements program to assess the erosion behavior ofmaterials will depend on many factors concerning the condi-tions of service applications.The users of this test methodshould determine the degree of correlation of the results1This test method is under the jurisdic
13、tion of ASTM Committee G02 on Wearand Erosion and is the direct responsibility of Subcommittee G02.10 on Erosion bySolids and Liquids.Current edition approved July 1,2013.Published July 2013.Originally approvedin 1983.Last previous edition approved in 2007 as G7607.DOI:10.1520/G0076-13.2The boldface
14、 numbers in parentheses refer to a list of references at the end ofthis standard.3For 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 onth
15、e ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 obtained with those from field performance or results usingother test sys
16、tems and methods.This test method may be usedto rank the erosion resistance of materials under the specifiedconditions of testing.6.Apparatus6.1 The apparatus is capable of eroding material from a testspecimen under well controlled exposure conditions.A sche-matic drawing of the exit nozzle and the particle-gas supplysystem is shown in Fig.1.Deviations from this design arepermitted;however,adequate system characterization andcontrol of critical parameters are required.Deviations in nozzledesign
