ASTM D7393-2007 752 Standard Practice for Indicating Oil in Abrasives《研磨剂中指示油用标准实施规程》.pdf

1、Designation: D 7393 07Standard Practice forIndicating Oil in Abrasives1This standard is issued under the fixed designation D 7393; 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 i

2、ndicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is used to determine the presence of oil inabrasives used for abrasive blast cleaning.1.2 The procedure can be used in the laboratory, field or

3、fabrication shop.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.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

4、 to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 4940 Test Method for Conductimetric Analysis of WaterSoluble Ionic Contamination of Blasting Abrasives2.2 SSPC Standards:3SSPC-A

5、B1 Mineral and Slag AbrasivesSSPC-AB2 Cleanliness of Recycled Ferrous Metallic Abra-siveSSPC-AB3 Ferrous Metallic Abrasive3. Summary of Practice3.1 A sample of the abrasive is placed in a container,covered with water and vigorously shaken. The presence of anoil sheen or oil drops on the surface is c

6、ause for rejection of thesupply being tested.4. Significance and Use4.1 Oil in abrasives can be transferred to the surface beingcleaned, thus contaminating it. This can cause film defects,affect adhesion of the coating applied over it, and ultimateperformance of the coating system.4.2 Oil in abrasiv

7、es is one of the cleanliness tests requiredfor mineral and slag abrasives in SSPC-AB1, for recycledferrous abrasives in SSPC-AB2, and for new ferrous abrasivesin SSPC-AB3.4.3 Other contaminants in abrasive such as chemical con-taminants or particulate matter require other methods fordetection such a

8、s Test Method D 4940 for ionic contaminants.The ratio of abrasive to water is different for this test, so thesolution from evaluating the oil in abrasive should not be usedfor Test Method D 4940.5. Apparatus and Materials5.1 ContainerClear jar or bottle capable of holding 250ml (8.5 fl oz) or more a

9、nd with a lid that is capable of sealingthe contents.5.2 WaterPotable.6. Procedure6.1 Place a sample of the abrasive in a clean container toabout half its height.6.2 Add water to a level at least 2.5 cm (1 in.) above the topof the abrasive. The water temperature shall be between 20 and35C (68 and 95

10、F).6.3 Cover the container and shake vigorously for one min.6.4 Remove the cover from the container and let it sit for 5min.6.5 Examine the surface of the water for oil droplets or oilsheen.6.6 If oil is detected, retest after cleaning a abrasive.7. Testing Frequency7.1 The testing frequency shall b

11、e agreed to by the pur-chaser and seller. A suggested testing frequency is:7.1.1 Three tests per shipment for bulk delivery.7.1.2 One test per 50 bags for bag delivery, or one test if thedelivery is less than 50 bags.7.1.3 One sample per shift on days that blasting is per-formed for recycled abrasiv

12、e.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 on Industrial Protective Coatings.Current edition approved Nov. 1, 2007. Published November 2007.2For referenced ASTM stan

13、dards, 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.3Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,Pittsbu

14、rgh, PA 15222-4656, http:/www.sspc.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Interpretation of Results8.1 The presence of an oil sheen or oil droplets indicatescontamination. The abrasive should be cleaned before use ord

15、iscarded.9. Report9.1 Report the abrasive manufacturer, brand name of theproduct, size designation, lot/batch number, and test results.10. Keywords10.1 abrasive; contaminants; oil contaminationASTM International takes no position respecting the validity of any patent rights asserted in connection wi

16、th 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 infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible tech

17、nical committee and must be reviewed every five years andif not revised, either reapproved or 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 considerat

18、ion 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 your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Ha

19、rbor 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).D7393072