1、Designation: D6353 06 (Reapproved 2011)Standard Guide forSampling Plan and Core Sampling for Prebaked AnodesUsed in Aluminum Production1This standard is issued under the fixed designation D6353; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f 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 guide covers sampling for prebaked carbon anodesused in the production of aluminum, and d
3、etails procedures fortaking test samples from anode blocks. It covers equipment andprocedures for obtaining samples from anode blocks in amanner that does not destroy the block or prevent its subse-quent use as originally intended. However, the user mustdetermine the subsequent use of the sampled an
4、ode blocks.Preferred locations for taking samples from single units ofanodes are covered in this guide.1.1.1 Information for sampling of shaped refractory prod-ucts, in general, is given in ISO 5022. This standard details thestatistical basis for sampling plans for acceptance testing of aconsignment
5、 or lot. Anodes used in the production of alumi-num have specific requirements for sampling and while thestatistical basis for sampling given in ISO 5022 applies, furtheror modified requirements may also apply.1.2 The values stated in SI units are to be regarded asstandard. No other units of measure
6、ment are included in thisstandard.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 limita
7、tions prior to use.NOTE 1The followingASTM standards are noted as sources of usefulinformation: Test Methods C559, C611, C651, C747, C1025, C1039, andE1225.2. Referenced Documents2.1 ASTM Standards:2C559 Test Method for Bulk Density by Physical Measure-ments of Manufactured Carbon and Graphite Artic
8、lesC611 Test Method for Electrical Resistivity of Manufac-tured Carbon and Graphite Articles at Room TemperatureC651 Test Method for Flexural Strength of ManufacturedCarbon and Graphite Articles Using Four-Point Loading atRoom TemperatureC747 Test Method for Moduli of Elasticity and Fundamen-tal Fre
9、quencies of Carbon and Graphite Materials by SonicResonanceC1025 Test Method for Modulus of Rupture in Bending ofElectrode GraphiteC1039 Test Methods for Apparent Porosity, Apparent Spe-cific Gravity, and Bulk Density of Graphite ElectrodesE1225 Test Method for Thermal Conductivity of Solids byMeans
10、 of the Guarded-Comparative-Longitudinal HeatFlow Technique2.2 ISO Standards:3ISO 5022 Shaped refractory products - Sampling and accep-tance testing3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 block, na carbon anode, a single unit.3.1.2 prebaked, na baked carbon article or
11、block.3.1.3 sample, nthe portion of carbon obtained from ananode.3.1.4 test specimen, nan article prepared from a sample.4. Significance and Use4.1 Core sampling is an acceptable way of obtaining a testspecimen without destroying the usefulness of an anode block.4.1.1 Test specimen obtained by this
12、guide can be used byproducers and users of carbon anodes for the purpose ofconducting the tests in Note 1 to obtain comparative physicalproperties.4.2 Sampling shall not weaken the anode or increase thelikelihood of premature failure.1This guide is under the jurisdiction of ASTM Committee D02 on Pet
13、roleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.05 onProperties of Fuels, Petroleum Coke and Carbon Material.Current edition approved May 1, 2011. Published August 2011. Originallyapproved in 1998. Last previous edition approved in 2006 as D635306. DOI:10.1520/D635
14、3-06R11.2For referenced ASTM standards, 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 American National Standards Institute
15、 (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Apparatus5.1 Core Drill Bit, similar to that shown in Fig. 1, driven bysuitable equipment. Use bits with cut
16、ting teeth coated withdiamond or other extremely hard material.6. Procedure6.1 Examples of sampling locations for anode blocks ofdifferent sizes and designs are shown in Fig. 2.6.2 Dimensions of a cored test sample will depend upon thetest that is to be performed on the sample. Reference should bema
17、de to the standards relating to the tests to be performed toensure that the samples taken are of suitable dimensions. Theminimum dimension (usually the diameter) should be at leastthree times the maximum particle size of the dry aggregateused in the manufacture of the anode block. The dimensions oft
18、he sample shall also allow for the provision of parallel sides.6.2.1 The specific dimensions of the test specimens to betested are normally given in the appropriate standard. Where astandard does not specify the dimensions of the test specimen,a diameter of 50 mm is recommended. The length of the te
19、stspecimen should be at least one and a half times the diameter.6.3 Place the core drill bit firmly against the anode block.Take care to maintain the bit vertical or horizontal and true. Donot stop until the bit is embedded to its full length. Compressedair can be used to cool the drill bit and remo
20、ve dust duringdrilling. Do not use water or other liquid lubricants.6.3.1 To remove the bit, pull and twist it out by hand, orcarefully withdraw the drill bit while it is rotating. To removethe core sample, insert a wedge between it and the anode blockuntil the core snaps off at the bottom of the ho
21、le.7. Report7.1 The sampling report shall include the following:7.1.1 Names of producer and customer,7.1.2 Manufacturers identification of the lot or batch ofanode blocks being sampled,7.1.3 Reference to this guide and to the standards describingthe tests to be carried out on the samples,7.1.4 Date
22、and place of sampling.7.1.5 If sampling according to a plan described in ISO 5022or other standard, complete details of the sampling plan beingfollowed should be given,7.1.6 Sketches, similar to those in Fig. 2, showing thelocation on the anode block from which samples were takenand the direction of
23、 sampling (vertical or horizontal),7.1.7 The dimensions of the test samples,7.1.8 Identification of the people doing the sampling,7.1.9 Any unusual features noted during the sampling, and7.1.10 Any procedures or operations not included in thisguide or in the standards to which reference is made or t
24、hat areregarded as optional.8. Keywords8.1 anode; anthracite; carbon; core; graphite; prebaked;sample; sampling; test specimensFIG. 1 Typical Core Drill BitD6353 06 (2011)2FIG. 2 Examples of the Location and the Direction of Sampling for Different Sizes and Designs of Anode BlocksD6353 06 (2011)3AST
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26、tirely 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 standard or for additional standardsa
27、nd 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 your views known to the ASTM Committee
28、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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D6353 06 (2011)4
