ASTM D5367-2000 Standard Practice for Evaluating Coatings Applied Over Surfaces Treated With Inhibitors Used to Prevent Flash Rusting of Steel When Water or Water Abrasive Blasted《.pdf

1、Designation: D 5367 00Standard Practice forEvaluating Coatings Applied Over Surfaces Treated WithInhibitors Used to Prevent Flash Rusting of Steel WhenWater or Water/Abrasive Blasted1This standard is issued under the fixed designation D 5367; the number immediately following the designation indicate

2、s 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers procedures to evaluate t

3、he compat-ibility of coatings with inhibitors used with water-blast clean-ing surface preparation with or without abrasive to preventflash rusting of steel prior to application of coatings.1.2 The manufacturer of the coatings shall be consulted toensure compatibility of inhibitors with the coatings.

4、1.3 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 regulatory limitations prior to use.2. Referenced D

5、ocuments2.1 ASTM Standards:A 36/36M Specification for Carbon Structural Steel2B117 Practice for Operating Salt Spray (Fog) TestingApparatus3D 714 Test Method for Evaluation Degree of Blistering ofPaints4D 822 Practice for Conducting Tests on Paint and RelatedCoatings and Materials Using Filtered Ope

6、n-FlameCarbon-Arc Light and Water Exposure Apparatus4D 1193 Specification for Reagent Water5D 1654 Test Method for Evaluation of Painted or CoatedSpecimens Subjected to Corrosive Environments4D 2247 Practice for Testing Water Resistance of Coatings in100 % Relative Humidity4D 3359 Test Methods for M

7、easuring Adhesion by TapeTest4D 4417 Test Methods for Field Measurement of SurfaceProfile of Blast Clean Steel6D 4541 Test Methods for Pull-Off Strength of CoatingsUsing Portable Adhesion Testers62.2 Other Standards:SSPC-SP 5 Surface Preparation Specification No. 5, WhiteMetal Blast Cleaning7SSPC-SP

8、12/NACE No. 5 Surface Preparation and Cleaningof Steel and Other Hard Materials by High and Ultrahigh-Pressure Water Jetting Prior to Recoating7SSPC-TR2/NACE 6C 198 Wet Abrasive Blast Cleaning7NACE TM-01-74 Laboratory Method for Evaluation ofProtective Coatings Used as Lining Materials in Immer-sion

9、 Surfaces83. Significance and Use3.1 Water-blast cleaning with, (SSPC-TR2/NACE 6C 198)or without, (SSPC-SP 12/Nace No. 5) abrasive, results in flashrusting under some environmental conditions. Inhibitors areused to prevent flash rusting while drying and before coatingapplication. The inhibitor or re

10、action products of the inhibitoron the substrate becomes part of the coating systems. Coatingperformance may be influenced by the inhibitor. Solublecontaminants or unreacted inhibitors left on the surface underthe coating may cause premature failure. This practice includesa comparison of coating per

11、formance with and without inhibi-tors using various laboratory tests to simulate a range ofconditions such as high moisture, marine atmospheric or waterimmersion.3.2 The user or specifier must determine the specific testmethods to be used and exposure conditions. Some testmethods referenced may not

12、be applicable to all types ofcoatings.4. Specimen Preparation4.1 Carbon steel samples of an appropriate size, in accor-dance with Specification A 36/A36M for the specified testmethod shall be white metal blast-cleaned in accordance withSSPC-SP 5 and measure profile in accordance with TestMethods D 4

13、417. Select an abrasive that is suitable for use with1This practice is under the jurisdiction of ASTM Committee D33 on ProtectiveCoating and Lining Work for Power Generation Facilities and is the directresponsibility of Subcommittee D33.05 on Surface Preparation.Current edition approved Dec. 10, 200

14、0. Published February 2001. Originallypublished as D 5367 94. Last previous edition D 5367 94.2Annual Book of ASTM Standards, Vol 01.04.3Annual Book of ASTM Standards, Vol 03.024Annual Book of ASTM Standards, Vol 06.01.5Annual Book of ASTM Standards, Vol 11.01.6Annual Book of ASTM Standards, Vol 06.

15、02.7Available from SSPC, 4400 5th Avenue, Pittsburgh, PA.8Available from National Association of Corrosion Engineers, P.O. Box 218340,Houston, TX 77218.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.water-blast applications. Control

16、 panels shall be coated withthe same coating system and dry film thickness as the inhibitor-treated panels with the topcoat time as follows:Number of Panels for Each Exposure TestATopcoat Time68 h 4856 hDry Blastedno inhibitor 2 2Dry Blastedinhibitor-recommended concentra-tion22Dry Blastedinhibitor-

17、recommended concentra-tion 3 522_AFor each of the test and topcoat times, one panel shall be designated ascontrol and shall receive no exposure.4.2 Test panels will be treated with the inhibitor by immers-ing the dry abrasive-blasted panel in a water solution, at 75 610F (24 6 5.5C), of the inhibito

18、r at the concentrationrecommended by the inhibitor manufacturer and at five timesthis concentration (five times to simulate excessive concentra-tion above that recommended by the inhibitor manufacturer).Use deionized water in accordance with Specification D 1193.Deionized water, Type II Reagent Grad

19、e, is used to minimizetest variables. Tap water is typically used in the field and maycontain varying amounts of salts.4.3 Remove panel after 1 or 2 min immersion in theinhibitor solution and hang in a vertical position allowing theinhibited water solution to drain and dry at 75 6 10F (24 65.5C). If

20、 required by the inhibitor manufacturer, rinse panelswith deionized water to remove excess inhibitor or in accor-dance with the manufacturers recommendations (see alsoSpecification D 1193). Care should be taken not to allow thewater/inhibitor solutions to puddle since this may cause a highconcentrat

21、ion of inhibitor, after evaporation.4.4 After completely drying and prior to any appearance offlash rusting, apply the first coat of the coating system. Applycoating within 6 to8htoonesetofcontrol and exposure testspecimens and apply coating to another set of control andexposure test specimens withi

22、n 48 to 56 h. Select shorter timeswhen inhibitor shows flash rusting before either of these timeperiods.4.5 Record relative humidity range and drying time aftertreatment and before coating. Apply remaining coats as rec-ommended by the coating manufacturer.5. Procedure5.1 Select as a minimum, one of

23、the tests that best simulatesthe intended service condition of the coating system (see Table1): Specification B117, Practice D 2247, and NACE TM-01-74 Method B. Other tests on weathering, such as PracticeD 822, or cyclic testing, elevated temperatures, chemicalimmersion, radiation or design basic ac

24、cident (DBA) may alsobe used to examine inhibitors with a coating for specificexposure conditions.5.2 Use a different time schedule for comparison testingdepending on the generic coating being tested with the inhibi-tor. Schedule more frequent examination schedules in order tomore accurately identif

25、y time when changes in coating condi-tions occur.5.3 Conduct two adhesion tests in accordance with TestMethods D 4541 or D 3359, Test Method B, elcometer or tapetest procedures at each time period on both the control andexposure test samples.9Repair adhesion test areas beforecontinuing the test.6. R

26、eport6.1 Report blistering and scribe corrosion as appropriate forthe test method and report conditions of test samples inaccordance with Test Methods D 714 and D 1654 at each testtime. Report adhesion test values and where failure occurredfor each test condition and time. Report sample preparationc

27、onditions including:6.1.1 Abrasive blast profile in accordance with Test Meth-ods D 4417,6.1.2 Dry film thickness of each coat,6.1.3 Inhibitor used and concentration,6.1.4 Time between inhibitor treatment to coating applica-tion and relative humidity range, and6.1.5 Coating, thinner and application

28、method used.7. Keywords7.1 abrasive blasting; coatings; inhibitors; surface prepara-tion; water blasting9The two adhesion tests will not provide the precision, if any, indicated in thereferenced methods.TABLE 1 Recommended Exposure Tests and ExaminationSchedulesExposure Test MethodGuide toRecommende

29、dTest TimeExaminationSchedule, hMarine AtmosphereSteel panel size, in.14 by4 by 12 Salt fog (Test Method B117),(scribed)100020004000High Moisture CondensingAtmosphere, in.14 by 3 by 8 Cleveland condensing(Practice D 2247)50010002000Water Immersion, in.14 by 3 by 12 Deionized water immersionNACE TM01

30、74, Method B219043808760D5367002ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof

31、 infringement of such rights, are entirely their own responsibility.This 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 withdrawn. Your comments are invited either for revision of this s

32、tandard 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 that your comments have not received a fair hearing you shouldmake you

33、r 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 (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).D5367003