1、Designation: D 6353 06An American National StandardStandard Guide forSampling Plan and Core Sampling for Prebaked AnodesUsed in Aluminum Production1This standard is issued under the fixed designation D 6353; the number immediately following the designation indicates the year oforiginal adoption or,
2、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. Scope*1.1 This guide covers sampling for prebaked carbon anodesused in the production of
3、aluminum, and details 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
4、 the sampled anode 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
5、of aconsignment 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 u
6、nits of measurement 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 re
7、gulatory limitations prior to use.NOTE 1The followingASTM standards are noted as sources of usefulinformation: Test Methods C 559, C611, C 651, C 747, C 1025, C 1039,and E 1225.2. Referenced Documents2.1 ASTM Standards:2C 559 Test Method for Bulk Density by Physical Measure-ments of Manufactured Car
8、bon and Graphite ArticlesC611 Test Method for Electrical Resistivity of Manufac-tured Carbon and Graphite Articles at Room TemperatureC 651 Test Method for Flexural Strength of ManufacturedCarbon and Graphite Articles Using Four-Point Loading atRoom TemperatureC 747 Test Method for Moduli of Elastic
9、ity and Fundamen-tal Frequencies of Carbon and Graphite Materials by SonicResonanceC 1025 Test Method for Modulus of Rupture in Bending ofElectrode GraphiteC 1039 Test Methods for Apparent Porosity, Apparent Spe-cific Gravity, and Bulk Density of Graphite ElectrodesE 1225 Test Method for Thermal Con
10、ductivity of Solids byMeans 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 blocka carbon anode, a single unit.3.1.2 prebakeda bak
11、ed carbon article or block.3.1.3 samplethe portion of carbon obtained from ananode.3.1.4 test specimenan 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 ob
12、tained by this 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.5. Apparatus5.1 Core Drill Bit, similar to that sho
13、wn in Fig. 1, driven bysuitable equipment. Use bits with cutting teeth coated withdiamond or other extremely hard material.1This guide is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.05 onProperties of Fuels, Pe
14、troleum Coke and Carbon Material.Current edition approved July 1, 2006. Published July 2006. Originally approvedin 1998. Last previous edition approved in 2003 as D 635398(2003).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
15、For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1*A Summary of Changes section appears at the end of this standard.Copyright
16、 ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 perf
17、ormed on the sample. Reference should bemade 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 manufact
18、ure of the anode block. The dimensions ofthe 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
19、50 mm is recommended. The length of the testspecimen 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
20、can be used to cool the drill bit and remove 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
21、the core snaps off at the bottom of the hole.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
22、 be carried out on the samples,7.1.4 Date 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 wh
23、ich samples were takenand the direction of 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
24、 standards to which reference is made or that areregarded as optional.8. Keywords8.1 anode; anthracite; carbon; core; graphite; prebaked;sample; sampling; test specimensFIG. 1 Typical Core Drill BitD6353062FIG. 2 Examples of the Location and the Direction of Sampling for Different Sizes and Designs
25、of Anode BlocksD6353063SUMMARY OF CHANGESSubcommittee D02.05 has identified the location of selected changes to this standard since the last issue(D 635398(2003) that may impact the use of this standard.(1) Revised 3.1 to read “Definitions of Terms Specific to ThisStandard.”ASTM International takes
26、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 infringement of such rights, are entirely their own respo
27、nsibility.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 standardsand should be addressed
28、 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 on Standards, at the a
29、ddress 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).D6353064
