ASTM E1806-2009(2016) Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition《为测定钢铁化学成分而进行取样的标准实施规程》.pdf

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1、Designation: E1806 09 (Reapproved 2016)Standard Practice forSampling Steel and Iron for Determination of ChemicalComposition1This standard is issued under the fixed designation E1806; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,

2、 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 practice covers the sampling of all grades of steel,both cast and wrought, and all types (grades) of

3、 cast irons andblast furnace iron for chemical and spectrochemical determi-nation of composition. This practice is similar to ISO 14284.1.2 This practice is divided into the following sections.SectionsRequirements for Sampling and Sample Preparation 6General 6.1Sample 6.2Selection of a Sample 6.3Pre

4、paration of a Sample 6.4Liquid Iron for Steelmaking and Pig Iron Production 7General 7.1Spoon Sampling 7.2Probe Sampling 7.3Preparation of a Sample for Analysis 7.4Liquid Iron for Cast Iron Production 8General 8.1Spoon Sampling 8.2Probe Sampling 8.3Preparation of a Sample for Analysis 8.4Sampling an

5、d Sample Preparation for the Determination of 8.5Oxygen and HydrogenLiquid Steel for Steel Production 9General 9.1Probe Sampling 9.2Spoon Sampling 9.3Preparation of a Sample for Analysis 9.4Sampling and Sample Preparation for the Determination 9.5of OxygenSampling and Sample Preparation for the Dete

6、rmination 9.6of HydrogenPig Irons 10General 10.1Increment Sampling 10.2Preparation of a Sample for Analysis 10.3Cast Iron Products 11General 11.1Sampling and Sample Preparation 11.2SectionsSteel Products 12General 12.1Selection of a Laboratory Sample or a Sample for 12.2Analysis from a Cast ProductS

7、election of a Laboratory Sample or a Sample for 12.3Analysis from a Wrought ProductPreparation of a Sample for Analysis 12.4Sampling of Leaded Steel 12.5Sampling and Sample Preparation for the Determination 12.6of OxygenSampling and Sample Preparation for the Determination 12.7of HydrogenKeywords 13

8、AnnexesSampling Probes for Use with Liquid Iron and Steel Annex A1Sampling Probes for Use with Liquid Steel for the Annex A2Determination of Hydrogen1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 This standard does not

9、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. For specificstatements, see 6.4.3.5, 9.4.

10、4.3, and 12.5.1 as well as Section 5.2. Referenced Documents2.1 ASTM Standards:2A48/A48M Specification for Gray Iron CastingsA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsE135 Terminology Relating to Analytical Chemistry forMetals, Ores, and Related MaterialsE

11、415 Test Method for Analysis of Carbon and Low-AlloySteel by Spark Atomic Emission SpectrometryE1010 Practice for Preparation of Disk Specimens of Steel1This practice is under the jurisdiction of ASTM Committee E01 on AnalyticalChemistry for Metals, Ores, and Related Materials and is the direct resp

12、onsibility ofSubcommittee E01.01 on Iron, Steel, and Ferroalloys.Current edition approved Feb. 1, 2016. Published March 2016. Originallyapproved in 1996. Last previous edition approved in 2009 as E1806 09. DOI:10.1520/E1806-09R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org,

13、orcontact ASTM Customer Service 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 States1and Iron by Remel

14、ting for Spectrochemical Analysis2.2 ISO Documents:ISO 9147 Pig ironsDefinition and classification3ISO 14284 Steel and ironSampling and preparation ofsamples for the determination of chemical composition33. Terminology3.1 DefinitionsFor definitions of terms in this practice,refer to Terminology E135

15、.3.2 Definitions of Terms Specific to This Standard:3.2.1 cast product, nitem of iron or steel which has notbeen subject to deformation, for example, an ingot, a semifinished product obtained by continuous casting, or a shapedcasting.3.2.2 consignment, nquantity of metal delivered at onetime.3.2.3 g

16、rinding, nmethod of preparing a sample of metalfor a spectrochemical method of analysis in which the surfaceof the sample for analysis is abraded using an abrasive wheel.3.2.4 increment, nin sampling, a portion of material re-moved from a lot by a single operation.3.2.5 linishing, nmethod of prepari

17、ng a sample of metalfor a spectrochemical method of analysis in which the surfaceof the sample for analysis is abraded using a rotating disk orcontinuous belt coated with an abrasive substance.3.2.6 lot, nin sampling, a collection of material regardedas a unit (see Specification A48/A48M).3.2.7 melt

18、, nliquid metal from which a sample is re-moved.3.2.8 sample, probe, nsample taken from the melt using asampling probe.3.2.9 sample, product, nspecific item of iron or steelselected from a supplied quantity for the purpose of obtaininga sample.3.2.10 sample, spoon, nsample taken from the melt usinga

19、 spoon and cast into a small mold.3.2.11 sampling, immersion, nmethod of probe samplingin which the probe is immersed in the melt where the samplechamber in the probe fills by ferrostatic pressure or gravity.3.2.12 sampling, probe, nmethod in which the sample istaken using a sampling probe inserted

20、into the melt.3.2.13 sampling, spoon, nmethod in which the sample istaken from the melt, or during the pouring of the melt, using along-handled spoon and cast into a small mold.3.2.14 sampling, stream, nmethod of probe sampling inwhich the probe is inserted into a stream of liquid metal wherethe sam

21、ple chamber in the probe fills by force of metal flow.3.2.15 sampling, suction, nmethod of probe sampling inwhich the probe is inserted into the melt where the samplechamber in the probe fills by aspiration.3.2.16 test portion, npart of the sample for analysis, orpart of the sample taken from the me

22、lt, actually analyzed.3.2.16.1 DiscussionIn certain cases, the test portion maybe selected from the sample product itself.3.2.17 thermal method of analysis, nmethod for the de-termination of chemical composition in which the sample issubmitted to a process of heating, combustion, or fusion.3.2.18 wr

23、ought product, nitem of steel which has beensubject to deformation by rolling, drawing, forging, or someother method, for example, a bar, billet, plate, strip, tube, orwire.4. Significance and Use4.1 This practice covers all aspects of sampling and prepar-ing steel and iron for chemical analysis as

24、defined in TestMethods, Practices, and Definitions A751 and SpecificationA48/A48M. Such subjects as sampling location and the sam-pling of lots are defined.4.2 It is intended that this practice include most require-ments for sampling steel and iron for analysis. Standardanalytical methods that refer

25、ence this practice need containonly special modifications and exceptions.4.3 It is assumed that all who use these procedures will betrained samplers capable of performing common samplingoperations skillfully and safely. It is expected that only propersampling equipment will be used.5. Hazards and Sa

26、fety Precautions5.1 Provide personal protective equipment to minimize therisk of injury during sampling and sample preparation meth-ods. Provisions shall include protective clothing, handprotection, and face visors resistant to splashes of liquid metalfor use during the sampling of liquid metal; pro

27、tective clothingand hand, eye, and hearing protection for use during thesampling and sample preparation of solid metal; and respira-tory protection for use where necessary.5.2 The use of machinery for sampling and sample prepa-ration shall be in accordance with appropriate national stan-dards. Grind

28、ing operations used for surface preparation may becovered by national legislation.5.3 Reference should be made to appropriate national regu-lations with respect to the use of solvents for the cleaning anddrying of samples and test portions.6. Requirements for Sampling and Sample Preparation6.1 Gener

29、al:6.1.1 This section describes the general requirements for thesample and for the sampling and sample preparation of ironand steel. Special requirements apply to each category of liquidand solid metal, and these requirements are described in therelevant section.6.1.2 The sequence of sampling and sa

30、mple preparation ofliquid iron and steel and cast iron and steel products is shownin Fig. 1. Special considerations apply to pig irons (see Section10).6.2 Sample:6.2.1 Quality:3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.o

31、rg.E1806 09 (2016)26.2.1.1 Sampling practices shall be designed to provide ananalytical sample that is representative of the mean chemicalcomposition of the melt or of the sample product.6.2.1.2 Ensure that the sample is sufficiently homogeneouswith respect to chemical composition so that inhomogene

32、itydoes not appreciably contribute to the error variability of themethod of analysis. In the case of a sample taken from a melt,however, some variability in analysis, both within and betweensamples for analysis, may be unavoidable. This variability willform an inherent part of the repeatability and

33、reproducibility ofthe analysis.6.2.1.3 Ensure that the sample is free from surface coatingsand from moisture, dirt, or other forms of contamination.6.2.1.4 The sample should be free from voids, cracks, andporosity and from fins, laps, or other surface defects.6.2.1.5 Take particular care when select

34、ing and preparingthe sample where a sample taken from a melt is expected to beheterogeneous or contaminated in any way.6.2.1.6 A sample taken from a melt shall be cooled in sucha manner that the chemical composition and metallurgicalstructure of the sample is consistent from sample to sample.6.2.1.7

35、 It is important to recognize that analysis by somespectrochemical methods may be influenced by the metallur-gical structure of the sample, particularly in the case of ironswith white and grey iron structures, and steels in the as-castand wrought conditions.FIG. 1 Sequence of Sampling and Sample Pre

36、paration of (a) Liquid Iron and Steel and (b) Cast Iron and Steel ProductsE1806 09 (2016)36.2.2 Size:6.2.2.1 Ensure that the dimensions of a laboratory sample inthe form of a solid mass are sufficient to permit additionalsamples for analysis to be taken for reanalysis when necessaryusing an alternat

37、ive method of analysis.6.2.2.2 A sample shall be prepared consisting of a sufficientmass to provide for any reanalysis necessary. Generally, a massof 100 g will be sufficient for a sample in the form of chips orpowder.6.2.2.3 The dimensional requirements for a sample in theform of a solid mass will

38、depend upon the method selected foranalysis. In the case of atomic emission and X-ray fluorescencespectrometric methods, the shape and size of the sample will bedetermined by the dimensions of the sample chamber. Thedimensions for samples given in this practice are for guidanceonly. Refer to Test Me

39、thod E415 for sample size requirementsfor atomic emission spectrometry.6.2.3 Identification:6.2.3.1 Assign the sample a unique identification to deter-mine the melt or sample product from which it was taken, andif necessary, the process conditions of the melt or the locationof the laboratory sample

40、in the sample product. For pig iron,this shall identify the consignment or part of a consignment andthe increment from which it was taken.6.2.3.2 Use labeling or some equivalent method of markingto ensure that the assigned identification remains associatedwith the sample for analysis.6.2.3.3 Record

41、the identification of the sample to ensure thatconfusion cannot arise as to the identity of the item to whichthe analysis and records refer.6.2.4 Conservation:6.2.4.1 Provide adequate storage facilities to segregate andprotect the sample. During and after preparation, store thesample in a manner whi

42、ch prevents contamination or chemicalchange.6.2.4.2 Keep the sample, or the laboratory sample in theform of a solid mass, for a sufficient period of time to permitretesting if necessary.6.2.5 Arbitration:6.2.5.1 Samples intended for arbitration shall be preparedjointly by the supplier and purchaser

43、or by their representa-tives. Keep a record of the methods used for preparing samples.6.2.5.2 Both parties or their representatives seal containerswith the samples intended for arbitration. Unless agreed to thecontrary, the representatives of each party responsible for thepreparation of samples will

44、 keep these containers.6.3 Selection of a Sample:6.3.1 Sample from a Melt:6.3.1.1 Melts are sampled at various stages in the manufac-turing process for the purposes of monitoring and controllingthe process. Samples can be taken during the casting of themelt to verify chemical composition in accordan

45、ce with thespecification of the cast product. In the case of liquid metalintended for the production of a casting, the analytical samplemay be selected from test bars or blocks specially cast from thesame metal as that of the casting for purposes of mechanicaltesting in accordance with the product s

46、tandard.6.3.1.2 Sampling practices shall be designed for melts toprovide samples during a particular manufacturing process inaccordance with requirements for sample quality (see 6.2.1).The sample obtained from a melt usually is in the form of asmall ingot, a cylindrical or rectangular block, or a ch

47、ill-castdisk or a combination of a disk with one or more attached pins,in some cases small lugs are attached to a disk sample.NOTE 1Sampling probes for use with liquid iron and steel may beobtained from a number of suppliers. The main features of the differenttypes of probe are distinguished in Anne

48、x A1 and Annex A2, whichinclude dimensions for information only.6.3.2 Sample from a Product:6.3.2.1 The laboratory sample can be selected from thesample product at the location indicated in the product speci-fication for the selection of material for mechanical testingwhen available.6.3.2.2 In the c

49、ase of an iron casting, the sample can beselected from a bar or block cast-on to the casting.6.3.2.3 In the case of a forging, the sample can be selectedfrom the initial starting material from which the forging hasbeen made or from prolongations of the forging or fromadditional forgings.6.3.2.4 In the absence of requirements given in the productstandard or of a specification when ordering the product, thesample may, following agreement between the supplier and thepurchaser, be selected from the sample for mechanical testingor from the test piece, or directl