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1、International Standard 5445 INTERNATIONAL ORGANIZATION FOR STANOAROlZATIONMEKP?/HAPOAHAR OPrAHHBAUHfl l-IO CTAHAAPTW3AWlWORGANlSATlON INTERNATIONALE DE NORMALISATION Ferrosilicon - Specification and conditions of delivery Ferro-silicium - Spkifications et conditions de livraison First edition - 1980
2、-12-01 tii UDC 669.15 782-198 Ref. No. IS0 5445-1980 (E) Descriptors : ferroalloys, ferrosilicon, materials specifications, chemical composition, delivery, quality control, grain size. 2 - Price based on 4 pages Copyright International Organization for Standardization Provided by IHS under license w
3、ith ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 membe
4、r bodies). The work of developing Inter- national Standards is carried out through IS0 technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-
5、governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. International Standard IS0 5445 was developed by Te
6、chnical Committee ISO/TC 132, Ferroalloys, and was circulated to the member bodies in November 1979. It has been approved by the member bodies of the following countries : Australia India Austria Italy Brazil Japan Canada Libyan Arab Jamahiriya China Norway Czechoslovakia Pakistan France Poland Germ
7、any, F.R. Portugal Romania South Africa, Rep. of Sweden United Kingdom USA USSR Yugoslavia No member body expressed disapproval of the document. 0 International Organization for Standardization, 1980 0 Printed in Switzerland Copyright International Organization for Standardization Provided by IHS un
8、der license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 5445-1980 (E) Ferrosilicon - Specification and conditions of delivery 1 Scope and field of appl
9、ication This International Standard specifies requirements and condi- tions of delivery for ferrosilicon usually supplied for steelmaking and foundry use. 5 Requirements 5.1 Constitution of consignment Ferrosilicon shall be delivered in consignments constituted by one of the following methods. 2 Ref
10、erences IS0 565, Test sieves - Woven metal wire cloth andperforated plate - Nominal sizes of apertures. 5.1.1 Tapped lot method IS 0 37 13, Ferroallo ys - Sampling and preparation of samples - General rules. 1) A consignment constituted by the tapped lot method consists of a ferrosilicon mass of one
11、 melt (or one part of a continuous tap). IS0 4139, Ferrosilicon - Determination of aluminium content - Flame atomic absorption spectrometric method. I SO 4158, Ferrosilicon, ferrosiicomanganese and ferro- silicochromium - Determination of silicon content - Gravimetric method. 5.12 Graded lot method
12、A consignment constituted by the graded lot method consists of a number of melts (or parts of continuous taps) of one ferrosilicon designation. 3 Definition 3.1 ferrosilicon : A master alloy of iron and silicon with a minimum silicon content of 8,0 % by mass, and a maximum silicon content of 95,0 %
13、by mass, obtained by reduction. The silicon content of the melts (or parts of continuous taps) constituting the consignment shall not differ from each other by more than 3 % absolute. 5.1.3 Blended lot method 4 Information for ordering Orders for ferrosilicon shall include the following information.
14、 A consignment constituted by the blended lot method consists of a number of melts (or parts of continuous taps) of one ferrosilicon designation, which have been crushed to a particle size less than x mm2) and thoroughly mixed. a) Quantity. b) Constitution of consignment. c) Chemical composition in
15、accordance with the designa- tions given in table 1. The content of the main constituent of the melts (or parts of continuous taps) constituting the consignment may vary between the minimum and maximum limits specified for the appropriate ferrosilicon designation. d) Particle size ranges in accordan
16、ce with the classes given in table 2. 5.2 Chemical composition e) Necessary requirements for analysis reports, packing, etc., as appropriate. 5.2.1 The chemical composition of ferrosilicon shall be as specified in table 1. The limits stated correspond to particle size ranges in classes 1 to 8 in acc
17、ordance with table 2. 1) At present at the stage of draft. 2) To be defined after further investigation. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproducti
18、on or networking permitted without license from IHS -,-,- 1s0 6446-1980 (E) 5.2.2 The chemical compositions given in table 1 show only the main constituent elements and usual impurities, If the pur- chaser requires closer ranges for the main element contents and/or different limits for specified ele
19、ments and/or limits for non-specified elements, this shall be agreed upon between sup- plier and purchaser. 5.2.3 The chemical compositions given in table 1 are subject to the precision of the methods of sampling and analysis for ferrosilicon (see clause 6). 5.3 Particle size ranges 5.3.1 Ferrosilic
20、on is supplied in lumps or as crushed and screened particles. The particle size ranges and tolerances shall be in accordance with table 2. The undersize values shall be valid at the point of delivery to the purchaser.1) The particle sizes specified refer to screening on a steel sieve with square ope
21、nings; see IS0 565. 5.3.2 If the purchaser requires particle size ranges and/or tolerances other than those given in table 2, these shall be agreed upon between supplier and purchaser. 5.4 Extraneous contamination The material shall be as free as possible from extraneous con- tamination. 6 Testing 6
22、.1 Sampling for chemical analysis and sieve analysis 6.1.1 Sampling for chemical analysis and sieve analysis*) shall preferably be carried out by the method specified in IS0 37133), but other methods of sampling having similar precision may also be used. 6.1.2 Sampling is usually carried out at the
23、supplier s stockyard, unless otherwise agreed. Wherever sampling is car- ried out, representatives of both supplier and purchaser may be present. 6.1.3 If required, arbitration sampling shall be carried out by an arbitrator chosen by mutual agreement between supplier and purchaser. Sampling shall be
24、 carried out by the method specified in IS0 3713a), but other methods of sampling having similar precision may be agreed upon between supplier, pur- chaser and arbitrator. The sample obtained by arbitration shall be accepted by both parties. 6.2 Analysis 6.2.1 The chemical analysis of ferrosilicon s
25、hall preferably be carried out by the methods specified in IS0 4139 and IS0 4159, but other methods of chemical analysis having similar precision may also be used. 6.2.2 Ferrosilicon shall be furnished with an analysis cer- tificate, established by the supplier, for the silicon content and, if agree
26、d, the contents of other elements either specified in table 1 or additionally agreed and, upon request of the pur- chaser, with a sample representative of the consignment. 6.2.3 In case of dispute, one of the following two procedures may be used. 6.2.3.1 Contradictory analysis The chemical analysis
27、shall be carried out on the same sample and preferably by the methods specified in IS0 4139 and IS0 4159. Other methods of chemical analysis having similar precision may be used, but shall be agreed upon between sup- plier and purchaser. If the difference between the results of the two analyses is w
28、ithin x %4), the mean value shall apply. If .the difference ex- ceeds x %, then, provided that no other agreement is reached, arbitration analysis shall be carried out by an arbitrator chosen by mutual agreement between supplier and purchaser. 1) The point of delivery is defined as that point where
29、the responsibility for the consignment passes from supplier to purchaser. If neither the supplier nor the purchaser is responsible for the transportation, then the point at which the values become valid shall be agreed upon. 2) Sieve analysis of ferroalloys will form the subject of IS0 4551. 3) A me
30、thod of sampling specific to ferrosilicon will form the subject of IS0 4552. 4) The value of x will be specified later. In the meantime, the value should be agreed upon between purchaser and supplier. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO L
31、icensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 5445-1990 (E) 6.2.3.2 Arbitration analysis disputed values or not more than y %I) outside one of these values. Arbitration analysis shall pr
32、eferably be carried out by the methods specified in IS0 4139 and IS0 4166. Other methods of chemical analysis having similar precision may be used, but shall be agreed upon between supplier, purchaser and ar- bitrator. 7 Despatch and storage The arbitrator s result is final, provided it is within th
33、e two Ferrosilicon shall be packed, stored and transported according to international regulations.2) Table 1 - Chemical composition Chemical composition, % Designation Si Al P S C Mnl) Crl) -l-a) over up to and over up to and max. max. max. max. max. max. including including F&i10 8.0 13,0 - 02 0,15
34、 0,06 24 3.0 68 0,30 FeSi15 14,0 20,o - I.0 0,15 O, 1.5 185 W3 0,30 FeSi25 20,o 30,o - 1.5 0,15 0,06 I.0 180 03 0,30 FeSi45 41.0 47,0 - zo 0,05 0,05 0.20 ItO 0,5 0,30 FeSi50 47,0 51 ,o - I,5 0.05 0.05 0,20 03 0.5 0.30 FeSi65 63,0 fWJ - 33 0.05 0,04 0,20 0.4 0,4 0.30 FeSi75All 72,0 80.0 - 18 0.05 O,l
35、 0,15 0,5 0.3 0.20 FeSi75All,5 72,0 WO J,O 1,5 0,05 0,04 0.15 0.5 0,3 0.20 FeSi75Al2 72,0 80.0 I,5 2.0 0,05 0.04 0,20 0,5 0,3 0,30 FeSi75Al3 72,0 80,O 2.0 3,O 0,05 0,04 0,20 0.5 0.5 0,30 FeSiSOAll 87,0 95,0 - I,5 OD 0,04 0,15 0.5 0.2 0.30 FeSi90A12 87,0 95.0 185 3.0 0.04 0,04 0.15 085 0.2 0.30 1) If
36、 not otherwise specified, these values are for information only. Table 2 - Particle size Class 1 2 3 4 5 6 7 8 Particle size range mm loo to 315 75 to 200 35 to loo 10 to 75 3,15 to 35 3,15 to 10 3.15 to 6,3 up to 3,15 Undersize, max. % by mass Oversizel), max. total below 3,15 mm % by mass 20 62) 2
37、0 62) IO 18 62) No piece to ex- 18 72) teed 1,15 x the maximum limit of 8 the size range 10 specified in two 10 or three directions. - I) See the annex. 2) If not otherwise specified, these values are for information only. I) This value, as an overall precision, will be specified as &M. 2) Examples
38、of appropriate international regulations are : a) RID : Reglement International concernant le transport des marchandises dangereuses par chemin de fer, Annexe C. b) International maritime dangerous goods code. 3 Copyright International Organization for Standardization Provided by IHS under license w
39、ith ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8448-1980 (El Annex Recommended minimum dimensions of openings for feeding systems (This annex does not form part of the standard.)
40、 Ferrosilicon, when crushed, has a great tendency to break into pieces where the ratio between length and thickness can be con- siderable, Therefore openings for feeders, tubes or any other equipment for transportation of ferrosilicon, must have suitable dimen- sions to avoid blocking. The dimension
41、s given in table 3 are the recommended smallest dimensions of any critical openings in a system for transportation and feeding ferrosilicon. Table 3 - Recommended dimensions of openings Class I Smallest dimension, mm min. I 1 750 2 600 3 450 4 400 5 250 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 00:05:50 MDTNo reproduction or networking permitted without license from IHS -,-,-