1、Designation: D 5502 00 (Reapproved 2005)An American National StandardStandard Test Method forApparent Density by Physical Measurements ofManufactured Anode and Cathode Carbon Used by theAluminum Industry1This standard is issued under the fixed designation D 5502; the number immediately following the
2、 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers
3、the determination of the appar-ent density of core samples from manufactured articles ofanode and cathode carbon used by the aluminum industry inthe production of aluminum.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3
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 regulatory limitations prior to use.2. Referenced Docu
5、ments2.1 ASTM Standards:2C 559 Test Method for Bulk Density by Physical Measure-ments of Manufactured Carbon and Graphite ArticlesIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units (SI): (The Modern Metric System)3. Terminology3.1 Definitions:3.1.1 apparent densitythe weight per un
6、it volume of asubstance, including voids inherent in the material tested.4. Significance and Use4.1 Apparent density as determined by this test method is abasic material property of importance in manufacturing andapplication of anode and cathode carbon.4.2 This test method can be used for quality an
7、d processcontrol, material characterization and description, and otherpurposes.5. Apparatus5.1 Drying Oven, capable of being controlled to 110 6 5C(230 6 9F).5.2 Desiccator, charged with indicating desiccant.5.3 Balance, capable of weighing to 6 0.01 g.5.4 Core Drill, drill equipped with a diamond c
8、ore bitcapable of producing a core with a minimum diameter of 50mm with true surface qualities.5.5 Cut-Off Saw, a saw capable of cutting the cored sampleresulting in a surface free of chips or gouges.5.6 Micrometer, a micrometer or other measuring devicecapable of measuring the diameter and length o
9、f the preparedsample to an accuracy of 0.001 cm.6. Preparation of Test Specimens6.1 Core drill samples with a minimum diameter of 50 mmfrom the manufactured article in the form of a right circularcylinder.6.2 Cut samples from the core to a minimum length of 50mm. It is recommended that triplicate sa
10、mples from the core beprepared, analyzed, and averaged to attain a result representa-tive of the core apparent density.6.3 It is the responsibility of the user of this test method toestablish the quantity and location of core samples from themanufactured article for testing.6.4 No particle contained
11、 within the sample can be largerthan 19 mm. If particles are larger, the sample size or quantity,or both, shall be increased accordingly to give comparableaccuracy in the results.6.5 During the coring operation, use no lubricant having aboiling point above 100C.All edges and faces of the specimensho
12、uld be free of chips or gouges. Ensure that the specimen isfree of any residue from the coring operation. Dry thespecimen for a minimum of2hat110C, and then allow it tocool to 25 6 5C in a desiccator. The specimen shall not beremoved from the desiccator until immediately prior to weigh-ing.7. Proced
13、ure7.1 Weigh the prepared specimen to an accuracy of 0.01 gusing a balance or scale.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
14、Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1994. Last previous edition approved in 2000 as D 550200.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume i
15、nformation, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 Measure each dimension of the test specimen to anaccuracy of 0.001 cm.7.2.1 Measure the length at four po
16、ints, 90 apart on theperiphery of the circular end faces. Make two sets of diametermeasurements. Each set shall consist of four measurements,one at each end and two at intermediate points along an axialline. These sets shall lie at 90 to each other. Determine themean of the four length measurements
17、(l) (see Fig. 1) and themean of the eight diameter measurements (d) (see Fig. 2).8. Calculation8.1 Record the mass to the nearest 0.01 g and the dimen-sions to the nearest 0.001 cm. Conversion factors are availablein IEEE/ASTM SI 10.8.2 The volume of the right circular cylinder specimen canbe calcul
18、ated as follows:V 5pd2/4!l (1)where:V = volume, cm3,l = mean length, cm, andd = mean diameter, cm.8.3 The apparent density of the specimen can be calculatedas follows:D 5 M/V (2)where:D = apparent density, g/cm3,M = mass, g, andV = volume, cm3.9. Report9.1 Report the following information:9.1.1 Type
19、, source, and form of the original article.9.1.2 Apparent densities of the individual specimens and themean reported to the third decimal point (0.001 g/cc).10. Precision and Bias310.1 PrecisionThe precision of this test method as deter-mined by the statistical examination of the interlaboratory tes
20、tresults is as follows:10.1.1 RepeatabilityThe difference between successiveresults obtained by the same operator with the same apparatusunder constant operating conditions on identical test materialswould, in the long run, in the normal and correct operation ofthe test method exceed the following v
21、alues only in one case intwenty.Repeatability 5 0.005 (3)10.1.2 ReproducibilityThe difference between two singleand independent results obtained by different operators work-ing in different laboratories on identical material would in thelong run, exceed the following values only in one case intwenty
22、.Reproducibility 5 0.015 (4)NOTE 1The values in the statements were determined in a cooperativeprogram following RR:D02-1007.411. Keywords11.1 aluminum industry; anode; anode carbon; apparentdensity; bulk density; cathode; cathode carbon; core; density3Supporting data have been filed at ASTM Interna
23、tional Headquarters and maybe obtained by requesting Research Report RR:D02-1318.4Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D02-1007.FIG. 1 Determining the Mean of the Four Length MeasurementsFIG. 2 Determining the Mean of
24、the Eight DiameterMeasurementsD 5502 00 (2005)2ASTM 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,
25、and the riskof 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 revi
26、sion of this standard 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
27、shouldmake your 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).D 5502 00 (2005)3
