1、December 2016 English price group 16No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.100!%U“2595092www.din.deDIN
2、EN ISO 8049Ferronickel shot Sampling for analysis (ISO 8049:2016);English version EN ISO 8049:2016,English translation of DIN EN ISO 8049:2016-12Ferronickelschrot Probenahme fr Analyse (ISO 8049:2016);Englische Fassung EN ISO 8049:2016,Englische bersetzung von DIN EN ISO 8049:2016-12Ferronickel en g
3、renailles chantillonnage pour analyse (ISO 8049:2016);Version anglaise EN ISO 8049:2016,Traduction anglaise de DIN EN ISO 8049:2016-12SupersedesDIN EN 28049:199207www.beuth.deDocument comprises 35 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be conside
4、red authoritative.11.16 DIN EN ISO 8049:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 8049:2016) has been prepared by Technical Committee ISO/TC 155 “Nickel and nickel alloys” (Secretariat: AFNOR, France) in collaboration with CEN/TC SS M14 “Nickel (CEN Gen
5、eral Secretariat) in the parallel voting procedure. The responsible German body involved in its preparation was DIN-Normenausschuss Nichteisenmetalle (DIN Standards Committee Nonferrous Metals), Working Committee NA 066-03-04 AA Nickel. The DIN Standards corresponding to the International Standards
6、referred to in this document are as follows: ISO 513:2012 DIN ISO 513:2014-05 ISO 4957 DIN EN ISO 4957 ISO 6352:1985 DIN EN 26352:1992-02 ISO 6501 DIN EN 26501 Amendments This standard differs from DIN EN 28049:1992-07 as follows: a) the number of the standard has been changed; b) Subclause 5.1.4 ha
7、s been newly added; c) the standard has been brought in line with the current rules of presentation. Previous editions DIN EN 28049: 1992-07 National Annex NA (informative) Bibliography DIN EN 26352:1992-02, Ferronickel Determination of nickel content Dimethylglyoxime gravimetric method (ISO 6352:19
8、85) DIN EN 26501, Ferronickel Specification and delivery requirements DIN EN ISO 4957, Tool steels DIN ISO 513:2014-05, Classification and application of hard cutting materials for metal removal with defined cutting edges Designation of the main groups and groups of application (ISO 513:2012) EUROPE
9、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8049 June 2016 ICS 77.100 Supersedes EN 28049:1992English Version Ferronickel shot - Sampling for analysis (ISO 8049:2016)Ferro-nickel en grenailles - chantillonnage pour analyse (ISO 8049:2016) Ferronickelschrot - Probenahme fr Analyse (ISO 8049:20
10、16) This European Standard was approved by CEN on 26 May 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical ref
11、erences concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a C
12、EN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon
13、ia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPI
14、SCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8049:2016 EForeword . 41 Scope . 52 Normative references 53 Form and packaging of pr
15、oduct 54 Principle 55 Taking of the primary sample and then of the intermediate sample 65.1 Blended lots . 65.1.1 Bulk sampling in the case of a suitable system for taking the primary sample 65.1.2 Sampling of bulk material when no adequate primary sampling system is available . 75.1.3 Sampling of a
16、 drum-packed lot . 75.1.4 Sampling of a container-packed lot . 75.2 Particular case of a lot made up of one single heat 96 Treatment of the intermediate sample and taking of the secondary sample . 96.1 General . 96.2 Blended lot 96.3 Lot made up of a single heat 97 Remelting of the secondary sample
17、. 98 Use of small ingots (secondary increments) 10Annex A (informative) Justification of the number of primary and secondary increments 12Annex B (informative) Methods for taking a sample of size N in a supply of M items 21Annex C (informative) Technical conditions for drilling and milling 25Bibliog
18、raphy .33Contents Page2EN ISO 8049:2016 (E) DIN EN ISO 8049:2016-12 European foreword .3European foreword This document (EN ISO 8049:2016) has been prepared by Technical Committee ISO/TC 155 “Nickel and nickel alloys“. This European Standard shall be given the status of a national standard, either b
19、y publication of an identical text or by endorsement, at the latest by December 2016, and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or
20、 CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 28049:1992. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Bel
21、gium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz
22、erland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8049:2016 has been approved by CEN as EN ISO 8049:2016 without any modification. 3EN ISO 8049:2016 (E) DIN EN ISO 8049:2016-12 ForewordISO (the International Organization for Standardization) is a worldwide federation of natio
23、nal standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internati
24、onal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended
25、 for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso
26、.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will
27、 be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressi
28、ons related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 155, Nickel and nickel alloys.This second
29、edition cancels and replaces the first edition (ISO 8049:1988). The following change has been made: 5.1.4 has been added.4EN ISO 8049:2016 (E) DIN EN ISO 8049:2016-12 1 ScopeThis International Standard defines a method of sampling for analysis of ferronickel lots in the form of shot as specified in
30、ISO 6501 in those cases where lots are constituted either heat by heat or by taking from blended stock.The purpose is to determine the contents of the various elements either from slugs by physical analysis methods (such as X-ray fluorescence or emission spectral analysis), or from chips by dry meth
31、ods (carbon, sulfur) or chemical analysis (other elements).2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the late
32、st edition of the referenced document (including any amendments) applies.ISO 513:2012, Classification and application of hard cutting materials for metal removal with defined cutting edges Designation of the main groups and groups of application3 Form and packaging of productGrain size: between 3 mm
33、 and 50 mm.Lot tonnage: equal to or greater than 5 t.In the case of lots taken from blended stock, the nickel content range k to (k + n) % of the blended heats shall be chosen as follows: 15 k 59; 1 n 5; 16 k + n 60.NOTE The case of non-blended lots (case n 1) is not dealt with in this International
34、 Standard.The ferronickel shot is generally delivered in bulk form in units which may be trucks, containers, or railroad cars, of which the contained masses normally range from 5 t to 30 t, although in the case of railroad cars, loads may have masses up to 60 t.This type of ferronickel can also be d
35、elivered drum-packed (the contained mass of which may be 250 kg).4 PrincipleIn a single heat, intergrain homogeneity is practically ensured. It is therefore very easy to obtain a representative “primary sample” from a small number of “primary increments”.In the case of a blended lot composed of seve
36、ral heats, a greater number of primary increments, NP, should be taken, but the whole still constitutes the primary sample.5EN ISO 8049:2016 (E) DIN EN ISO 8049:2016-12 After blending and mass division of the primary sample, an “intermediate sample” is obtained having a reasonable mass for laborator
37、y treatment. The treatment of the intermediate sample gives a “secondary sample”, which may be divided in Ns“secondary increments” not exceeding a mass of 1 kg individually.Each secondary increment is then remelted under appropriate conditions so that no variation in composition can be observed and
38、that Nshomogeneous small ingots be obtained (within-small-ingot homogeneity).NOTE It is generally accepted that 1 kg is the maximum mass which can be accommodated in a laboratory furnace for re-casting under the required conditions. According to the grain size distribution of shot, it is often neces
39、sary for the secondary sample to exceed 1 kg in order to be representative. Hence, the necessity of melting several small ingots. See the statistical justification in Annex A.The small ingots are then either used for physico-chemical analysis or machined into chips for chemical analysis. (This proce
40、dure is summed up in Figure A.1.)5 Taking of the primary sample and then of the intermediate sample5.1 Blended lots5.1.1 Bulk sampling in the case of a suitable system for taking the primary sampleThis can be performed, for example, by emptying the shot into a bin with reclaim by belt conveyor. From
41、 the conveyor discharge, two possibilities are as follows: to have a true sampling system respecting the rules of the art for sampling of particulate material (such as a cross stream sampler); to take increments at regularly spaced intervals, using a power shovel with a dipper intercepting the shot
42、stream in a representative manner.The mass of each primary increment shall be, in this case, not less than 20 kg, and is generally between 20 kg and 50 kg.The number of primary increments, Np, to be selected is shown in Table 1.Table 1 Minimum number of primary increments to be selectedSample Tonnag
43、eRange of nickel contents, nn 1 1 n 2 2 n 3 3 n 4 4 n 5Numbers of primary incrementsNp5 to 5050 to 200200 to 500500 to 2 50057101510121520151720252022253030354045Number of secondary incrementsNsa1 2 3 4 5aThis indicates the number of small ingots to be remelted in the hypothesis of 1 kg per small in
44、got. (If the maximum mass which can be remelted is 1lx kg, the number of small ingots to be remelted is x Ns.)The primary sample shall then be mass-divided into smaller units, in order to obtain an intermediate sample having a mass which can reasonably be sent to the laboratory for further preparati
45、on, 20 kg to 50 kg, say.This can be accomplished with automatic mass dividers (such as rotary dividers) of suitable size with respect to the particle size of the product being handled.6EN ISO 8049:2016 (E) DIN EN ISO 8049:2016-12 Failing such equipment, the division can be made by alternate shovelli
46、ng from the primary sample stockpile. As a precaution against material spill during shovelling, it is recommended that a scoop or coal-miners-type shovel be used.For example, every fifth shovelful or less would be taken and this division would be repeated a sufficient number of times to obtain the d
47、esired sample mass of 20 kg to 50 kg.5.1.2 Sampling of bulk material when no adequate primary sampling system is availableIn this case, hand sampling shall be performed by alternate shovelling on each unit to be checked (truck, railroad car, container, etc.). The number of units to be checked is the
48、 number Npin Table 1 or the total number of units if it is less than Np. For this purpose, the rules for random sampling given in Annex B may be applied.EXAMPLE When unloading a 20 t truck on to the ground, sampling could proceed as follows: shovel the 20 t, setting aside every fifth shovelful; from
49、 the 4 t obtained, set aside every fifth shovelful; from the 800 kg obtained, set aside every fifth shovelful; from the 160 kg obtained, set aside every fifth shovelful; send the 32 kg obtained to the laboratory.In this example, an intermediate sample is obtained for the checked unit.If more than one unit is checked in the same lot, intermediate samples in each unit can be blended and mass division carried out again until an intermediate s
