1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1927-5:2012Monolithic (unshaped) r e f r a c t o r y p r o d u c t sPart 5: Preparation and treatment of test piecesBS EN ISO 1927-5:2012 BRITISH STANDARDNational forew
2、ordThis British Standard is the UK implementation of EN ISO 1927-5:2012. It supersedes BS EN 1402-5:2003, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RPI/1, Refractory products and materials.A list of organizations represented on this committee can
3、 be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 65760 3 ICS 81.080 Compl
4、iance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR
5、M EN ISO 1927-5 December 2012 ICS 81.080 Supersedes EN 1402-5:2003English Version Monolithic (unshaped) refractory products - Part 5: Preparation and treatment of test pieces (ISO 1927-5:2012) Produits rfractaires monolithiques (non faonns) - Partie 5: Prparation et traitement des prouvettes (ISO 19
6、27-5:2012) Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 5: Herstellung und Behandlung von Probekrpern (ISO 1927-5:2012) This European Standard was approved by CEN on 30 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
7、 for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references 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 t
8、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN 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
9、bodies of Austria, Belgium, 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
10、, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for C
11、EN national Members. Ref. No. EN ISO 1927-5:2012: EBS EN ISO 1927-5:2012 EN ISO 1927-5:2012 (E) 3 Foreword This document (EN ISO 1927-5:2012) has been prepared by Technical Committee ISO/TC 33 “Refractories“in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the
12、secretariat ofwhich is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn atthe latest by June 2013. Attention is drawn to
13、 the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1402-5:2003. According to the CEN/CENELEC Internal Regulations, the national sta
14、ndards organisations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, CzechRepublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux
15、embourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1927-5:2012 has been approved by CEN as a EN ISO 1927-5:2012 without any modification. BS EN ISO 1927-5:2012ISO 1927-5:2012
16、(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Dimensions of test pieces . 14 Apparatus 25 Preparation of castable test pieces 65.1 Dense castables . 65.2 Insulating castables 76 Preparation of test pieces from ramming materials, taphol
17、e clay and dry vibration mixes . 96.1 Ramming mixes . 96.2 Plastics .106.3 Taphole clay materials . 116.4 Dry vibrating mixes . 117 Treatment of test pieces 127.1 Castables .127.2 Ramming mixes and plastics .138 Firing .148.1 Castables .148.2 Ramming mixes and plastics .159 Test report .17Bibliograp
18、hy .18BS EN ISO 1927-5:2012ISO 1927-5:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each membe
19、r body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Elec
20、trotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted
21、 by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
22、ights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 1927-5 was prepared by Technical Committee ISO/TC 33, Refractories.ISO 1927 consists of the following parts, under the general title Monolithic (unshaped) refractory products: Part 1: Introduction and classifi
23、cation Part 2: Sampling for testing Part 3: Characterization as received Part 4: Determination of consistency of castables Part 5: Preparation and treatment of test pieces Part 6: Measurement of physical properties Part 7: Tests on pre-formed shapes Part 8: Determination of complementary propertiesi
24、v ISO 2012 All rights reservedBS EN ISO 1927-5:2012ISO 1927-5:2012(E)IntroductionThe values of the properties obtained using test pieces are used to assess the homogeneity of monolithic (unshaped) materials. They are reference values which do not necessarily correspond with those obtained in industr
25、ial applications. Other methods of test-piece preparation or treatment, which differ from those specified by this part of ISO 1927, can lead to different values. ISO 2012 All rights reserved vBS EN ISO 1927-5:2012BS EN ISO 1927-5:2012Monolithic (unshaped) refractory products Part 5: Preparation and
26、treatment of test pieces1 ScopeThis part of ISO 1927 specifies methods for the preparation and treatment (curing, drying and firing) of test pieces from monolithic (unshaped) refractory materials. The methods are applicable to dense and insulating castables and to ramming materials with the four typ
27、es of chemical composition defined in ISO 1927-1.The dimensions of the test pieces are specified and the preparation of the mixture, compaction methods, storage and post-treatment of the test pieces are described.2 Normative referencesThe following referenced documents are indispensable for the appl
28、ication of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1927-1, Monolithic (unshaped) refractory products Part 1: Introduction and classificationISO 1927-2, Monolithic
29、 (unshaped) refractory products Part 2: Sampling for testingISO 1927-4, Monolithic (unshaped) refractory products Part 4: Determination of consistency of castablesISO 10060, Dense shaped refractory products Test methods for products containing carbon3 Dimensions of test piecesShape A: Length: 230 mm
30、; width: 114 mm; thickness: 64 mm;Shape B: Length: 230 mm; width: 64 mm; thickness: 54 mm;Shape C: Length: 230 mm; width: 64 mm; thickness: 64 mm;Shape D: Length: 160 mm; width: 40 mm; thickness: 40 mm.The width of the test piece as tested shall correspond to the height during preparation. The vibra
31、tion of the test piece during preparation shall be recorded, and for shapes C and D the compaction surface shall be marked for reference. The selection of test pieces for each type of material shall be as given in Table 1, except that for basic dense castables, ramming materials, taphole mixes and d
32、ry vibration mixes, test pieces with a diameter of 50 mm and height of 50 mm 1 mm are permissible and can be prepared using the sand-rammer. Shape C shall be used as the referee shape for inter laboratory testing.INTERNATIONAL STANDARD ISO 1927-5:2012(E) ISO 2012 All rights reserved 1BS EN ISO 1927-
33、5:2012ISO 1927-5:2012(E)Table 1 Type of shape for testsCastables DensecastablesMax grainsize15 mmDirectcharacterization bX aOther tests XInsulating castables XRamming materialsRamming mixes X Plastics X aFor these materials, shapes B and C are prepared by cutting from shape A.bTests for which result
34、s are directly obtained from the bars without size modifications are modulus of rupture, cold compressive strength, and permanent change in dimensions on heating.4 Apparatus4.1 Separator. A riffle sampler, suitable for use with the maximum particle size of the product, or a shovel for the quartering
35、 method. The riffle separation shall be at least 2,5 times the maximum grain size.4.2 Mixer, comprising the following.4.2.1 Pan. The pan shall be symmetrical around axis A and shall have a capacity of 15 l to 30 l. Both the pan and the mixing blade (see 4.2.2) shall be constructed from a material th
36、at does not react with the test material (see Figure 1).2 ISO 2012 All rights reservedBS EN ISO 1927-5:2012ISO 1927-5:2012(E)AB231Key1 Drive2 Pan3 Mixing bladeFigure 1 Principle of the mixer4.2.2 Mixing blade. The shape of the mixing blade shall be adapted to the internal dimensions of the pan. The
37、radius swept shall be such that the distance between the blade and the wall of the pan and the space between the blade and the bottom of the pan are at least as large as the maximum grain size of the material. For products with a maximum grain size of 6 mm or less, the distance between the blade and
38、 the wall shall be 6 mm. For products with larger grain sizes (up to 25 mm), the blade is used in a manner such that the distance to the wall of the pan is 25 mm.The mixing blade shall revolve at a speed between 40 r/min and 65 r/min around axis A (the symmetry axis of the mixing pan), the blade rot
39、ating simultaneously in the opposite direction at a speed between 120 r/min and 145 r/min around axis B (symmetry axis of the blade).For low-intensity mechanical mixing of insulating castables the mixing blade shall revolve at a speed between 15 r/min and 25 r/min around axis A (the symmetry axis of
40、 the mixing pan), the blade rotating simultaneously in the opposite direction at a speed between 50 r/min and 80 r/min around axis B (symmetry axis of the blade).4.3 Vibrating table. The vibrating table shall be flat and horizontal and shall perform only uniaxial vertical vibrations at a frequency o
41、f 50 Hz. The table shall be capable of being set at a double amplitude of 0,50 mm (see ISO 1927-1) with an accuracy of 0,05 mm for the entire procedure. There shall be an automatic adjustment to the required double amplitude according to the mass of the mould and material. ISO 2012 All rights reserv
42、ed 3BS EN ISO 1927-5:2012ISO 1927-5:2012(E)4.4 Pneumatic rammer. A compressed-air rammer shall have a rammer foot suitable for the width of the mould and have a smooth, flat working surface, i.e. 52 mm 25 mm for shape B and 62 mm 25 mm for shape C.The mass of the rammer and the frequency of ramming
43、shall be chosen in order to obtain a prescribed green bulk density, which shall be reported in the test report.4.5 Sand-rammer, consisting of a mould of 50 mm inside diameter, and 140 mm in length, and a 6,67 kg 50 g weight sliding on the shaft of the apparatus and arranged to fall a distance of 50
44、mm before engaging a collar attached to the shaft. At the lower end of the shaft there is a plunger, the diameter of which is about 0,3 mm smaller than the inside diameter of the mould (see Figures 2 and 3).NOTE A more detailed description of this piece of apparatus is given in ISO 1927-3.Figure 2 S
45、and-rammer for shaping ramming mixes test pieces4 ISO 2012 All rights reservedBS EN ISO 1927-5:2012ISO 1927-5:2012(E)2453Figure 3 Modification of sand-rammer for workability test4.6 Hydraulic-type power press, equipped with suitable moulds for forming test pieces of the required size. The press shal
46、l be capable of applying a minimum of 10 MPa pressure to the moulded face.NOTE The power press should only be used for shaping test pieces from plastics.4.7 Trowel, pointing type or stiff-bladed spatula of typical size 150 mm length and 50 mm width.4.8 Watertight moulds, capable of being dismantled
47、and shall be watertight. They shall be made from a material that does not react with the material to be tested.For compaction by the pneumatic rammer, the moulds shall be rigid so that they do not warp during ramming.NOTE 1 Steel or similar material is recommended to withstand the stroke of the ramm
48、er.The internal measurements of the moulds are determined by the dimensions of the test pieces. The surfaces 230 mm 64 mm (shapes A and C) and 230 mm 54 mm (shape B) are the horizontal surfaces during the compaction process. A variation of 0,5 mm is allowed for these dimensions. If multi-compartment
49、 moulds are used, the size of the mould shall be adapted for the number of test pieces prepared and this shall be indicated in the test report.In order to overfill the mould, an overfill ring is required for all unshaped materials. This ring shall taper slightly upwards. For castables, it can at the same time serve as a clamp to the vibrating table. The mould, the overfill ring and the clamp shall have sufficient rigidity to ensure that only the induced vibrations and the required frequency and amplitu
