1、Designation: D5502 00 (Reapproved 2015)Standard Test Method forApparent Density by Physical Measurements ofManufactured Anode and Cathode Carbon Used by theAluminum Industry1This standard is issued under the fixed designation D5502; the number immediately following the designation indicates the year
2、 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the appar-e
3、nt 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 asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport t
4、o 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 Standards:2C559 Tes
5、t Method for Bulk Density by Physical Measure-ments of Manufactured Carbon and Graphite ArticlesIEEE/ASTM SI 10 American National Standard for MetricPractice3. Terminology3.1 Definitions:3.1.1 apparent densitythe mass per unit volume of asubstance, including voids inherent in the material tested.4.
6、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 and processcontrol, material characterization and description, and otherpurpos
7、es.5. Apparatus5.1 Drying Oven, capable of being controlled to110 C 6 5 C (230 F 6 9 F).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 core bitcapable of producing a core with true surface qualities and ami
8、nimum diameter of 50 mm.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 of the preparedsample to an accuracy of 0.001 cm.6. Preparation of Test
9、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 of50 mm. It is recommended that triplicate samples from the corebe prepared, analyzed, and averaged to attain a resu
10、lt repre-sentative 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 within the sample can be largerthan 19 mm. If particles are larger, th
11、e 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 100 C. All edges and faces of thespecimen should be free of chips or gouges. Ensure that thespecimen is free of an
12、y residue from the coring operation. Drythe specimen for a minimum of 2 h at 110 C, and then allow1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels, Petrol
13、eum Coke and Carbon Material.Current edition approved Oct. 1, 2015. Published December 2015. Originallyapproved in 1994. Last previous edition approved in 2010 as D5502 00 (2010).DOI: 10.1520/D5502-00R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Se
14、rvice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1it to cool to 25 C 6 5 C in a desiccator. T
15、he specimen shallnot be removed from the desiccator until immediately prior toweighing.7. Procedure7.1 Weigh the prepared specimen to an accuracy of 0.01 gusing a balance or scale.7.2 Measure each dimension of the test specimen to anaccuracy of 0.001 cm.7.2.1 Measure the length at four points, 90 ap
16、art 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 (l) (see Fi
17、g. 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 calculated as fol
18、lows:V 5 d2/4!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, source, a
19、nd 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 testresults is
20、 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 values only
21、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.Reproducib
22、ility 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 International Head
23、quarters 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 the Eight D
24、iameter Measure-mentsD5502 00 (2015)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, and the ri
25、skof 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 th
26、is 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 shouldmake
27、 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
28、 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 00 (2015)3
