1、Designation:D705514Standard Practice forPreparation(by Abrasive Blast Cleaning)of Hot-RolledCarbon Steel Panels for Testing of Coatings1This standard is issued under the fixed designation D7055;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、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.1.Scope1.1 This practice covers the procedures to be followed in thepreparation(by abrasive blast cleaning)of hot
3、 rolled steelpanels for laboratory testing of coatings.1.2 This standard practice does not include procedures forthe application of coatings.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provid
4、ed 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 standard to establish appro-priate safety and health practices and determine the applica-bility of
5、 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A36/A36M Specification for Carbon Structural SteelA572/A572M Specification for High-Strength Low-AlloyColumbium-Vanadium Structural SteelA1011/A1011M Specification for Steel,Sheet and Strip,Hot-Rolled,Carbon,Structural,Hi
6、gh-Strength Low-Alloy,High-StrengthLow-AlloywithImprovedFormability,and Ultra-High StrengthD4285 Test Method for Indicating Oil or Water in Com-pressed AirD4417 Test Methods for Field Measurement of SurfaceProfile of Blast Cleaned SteelD4940 Test Method for Conductimetric Analysis of WaterSoluble Io
7、nic Contamination of Blasting AbrasivesD7393 Practice for Indicating Oil in Abrasives2.2 ISO Standard:ISO 8502-3,Part 3 Assessment of Dust on Steel SurfacesPrepared for Painting(pressure-sensitive tape method)32.3 SSPC/NACE Standards:4AB-1 Mineral and Slag AbrasivesAB-2 Specification for Cleanliness
8、 of Recycled FerrousMetallic AbrasivesAB-3 Newly Manufactured or Re-Manufactured Steel Abra-sivesSP 1 Solvent CleaningSP 5/NACE No.1 White Metal Blast CleaningSP 6/NACE No.3 Commercial Blast CleaningSP 10/NACE No.2 Near-White Metal Blast CleaningSSPC-VIS 1 Guide and Reference Photographs for SteelSu
9、rfaces Prepared by Dry Abrasive Blast Cleaning3.Summary of Practice3.1 This practice enables the user to specify the level ofpreparation of hot-rolled carbon steel test panels(prepared bydry abrasive blast cleaning)for testing of coatings,includingthe steel composition,the degree of surface cleanlin
10、ess,and thetype of abrasive.4.Significance and Use4.1 The procedures described in this practice are designed toprovide hot-rolled,carbon steel panels with uniform andreproducible abrasive blast cleaned surfaces for testing ofcoatings.5.Test Panels5.1 Prepare the test panels from unpainted hot-rolled
11、 steelplate or bar stock.5.2 The panels shall be made to a size and thickness asagreed upon between the purchaser and seller.1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.46 o
12、n Industrial Protective Coatings.Current edition approved Dec.1,2014.Published January 2015.Originallyapproved in 2004.Last previous edition approved in 2009 as D7055 09.DOI:10.1520/D7055-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at service
13、astm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from Society for Protective Coatings(SSPC),
14、40 24th St.,6th Floor,Pittsburgh,PA 15222-4656,http:/www.sspc.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 The steel composition shall be either SpecificationsA36/A36M,A572/A572M,A1011/A1011M or as agreed uponbetween the purcha
15、ser and seller.55.4 The surface condition of the steel prior to surfacepreparation shall be specified and shall be one of two rustgrades based on SSPC-VIS 1:Grade A,intact mill scale;orGrade B,rusting mill scale.If SSPC-SP 6/NACE No.3 isspecified in 6.2,then the surface condition shall be Grade B.5.
16、5 Remove any burr from saw-cut or sheared edges of thetest panels.5.6 Break sharp corners and/or edges using a grindingwheel.6.Methods of Preparation6.1 DegreasingPrior to abrasive blast cleaning degreasethe panels surfaces using one of the methods listed below fromSSPC-SP1.6.1.1 Solvent CleaningImmerse the panel in a cleaningsolution or rub the surface with a clean lint-free cloth wettedwith an appropriate solvent.If excessive oil or grease ispresent,power brush the surface vigorously and re-ri
