BS EN ISO 16282-2008 Methods of test for dense shaped refractory products Determination of resistance to abrasion at ambient temperature《致密成型耐熔制品的试验方法 室温下抗磨性的测定》.pdf

1、BRITISH STANDARDBS EN ISO 16282:2008Methods of test for dense shaped refractory products Determination of resistance to abrasion at ambient temperatureICS 81.080g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g4

2、4g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 16282:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 August 2008 BSI 2008ISBN 978 0 580 56669 1National forewordThis British Standard is the UK implementation of E

3、N ISO 16282:2008. It supersedes BS EN 993-20:2004 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RPI/1, Refractory products and materials.A list of organizations represented on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 be obtained on request to its secretary.This publicatio

4、n does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEURO

5、PISCHE NORMEN ISO 16282May 2008ICS 81.080 Supersedes EN 993-20:2004 English VersionMethods of test for dense shaped refractory products -Determination of resistance to abrasion at ambient temperature(ISO 16282:2007)Mthodes dessai des produits rfractaires faonnsdenses - Dtermination de la rsistance l

6、abrasion temprature ambiante (ISO 16282:2007)Prfverfahren fr dichte geformte feuerfeste Erzeugnisse -Bestimmung der Bestndigkeit gegen Abrieb beiUmgebungstemperatur (ISO 16282:2007)This European Standard was approved by CEN on 17 April 2008.CEN members are bound to comply with the CEN/CENELEC Intern

7、al Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.

8、This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are

9、the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerlan

10、d and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 16

11、282:2008: EForeword The text of ISO 16282:2007 has been prepared by Technical Committee ISO/TC 33 “Refractories” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 16282:2008 by Technical Committee CEN/TC 187 “Refractory products and materials” the secretar

12、iat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2008, and conflicting national standards shall be withdrawn at the latest by November 2008. Attention is drawn

13、 to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 993-20:2004. According to the CEN/CENELEC Internal Regulations, the national

14、 standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola

15、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 16282:2007 has been approved by CEN as a EN ISO 16282:2008 without any modification. BS EN ISO 16282:2008iiiContents Page1 Scope 12 Normative references 13 Terms and defin

16、itions 14 Principle 15 Apparatus . 26 Test pieces . 77 Procedure . 78 Calculation . 89 Precision . 810 Test report 9Bibliography . 10BS EN ISO 16282:2008blank1Methods of test for dense shaped refractory products Determination of resistance to abrasion at ambient temperature1ScopeThis International S

17、tandard specifies a method intended primarily for the determination of the abrasionresistance of shaped refractory materials at ambient temperature. It can also be used for unshaped refractorymaterials. It provides an indication of the suitability of the material for service in abrasive or erosive c

18、onditions.NOTE This International Standard is based on and technically identical to EN 993-20, published by the EuropeanCommittee for Standardization.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition

19、 cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes ofopeningsISO 5017, Dense shaped refractory products Determination of bulk densi

20、ty, apparent porosity and trueporosity1)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1 resistance to abrasionresistance of refractory test pieces to the surface wear caused by the mechanical action of moving solids3.2 resistance to erosionresi

21、stance of refractory test pieces to the surface wear caused by the mechanical action of a fluid, which may ormay not contain solid material4 PrincipleThe method determines the volume of material abraded from a flat surface of a test piece placed at right anglesto a nozzle through which of size-grade

22、d silicon carbide is blasted by compressed air at .1) EN 993-1, which is referred to in the text of EN 993-20, is closely based on ISO 5017.1 000 g 450 kPaBS EN ISO 16282:200825 Apparatus5.1 Abrasion tester, consisting of the equipment specified in 5.1.1 and 5.1.2.5.1.1 Venturi blast assembly (see F

23、igure 1) or blast gun (see Figure 2), consisting of a suitable housing withan air nozzle delivering air into the barrel of the assembly which acts as a venturi tube, the abrasive entering thebarrel from the side. The air-delivery nozzle shall have an inlet inside diameter between and and an outlet i

24、nside diameter between and . The air nozzle may be protected from abrasionby covering it with a nominally long piece of vinyl tubing of inside diameter and wall thickness. The inside diameter of the barrel of the assembly shall not exceed and the barrel shall bechecked periodically for wear.5.1.2 No

25、zzle (see Figures 1 and 2), for directing the abrading medium onto the test piece, consisting of a pieceof glass tubing long, in outside diameter, with a nominally thick wall. This glass tube isattached to the blast assembly and held perpendicular to the test piece using a long piece of stainlessste

26、el tubing, inside diameter. The steel tube is glued inside a tubing nut which is screwedonto the end of the blast assembly barrel. The glass tube is inserted through this steel tube and an air pressureseal made using a suitable rubber grommet compressed when the tubing nut is attached to the assembl

27、y barrel.The end of the glass tube within the blast assembly barrel shall be positioned at a distance of from the air-delivery nozzle. This is achieved by placing the glass tube on a brass rod in diameter, with a shoulder from the tip. This allows the glass tube to be inserted through the steel tube

28、 and into the barrelof the assembly until the end of the brass rod touches the air-delivery nozzle, thus ensuring a gapbetween the end of the glass tube and the air-delivery nozzle.A new piece of glass tubing shall be used for each determination.5.2 Feed mechanism, capable of supplying of abrasive t

29、o the blast assembly in .Secondary air shall be allowed to enter the system with the abrasive. A suitable feed mechanism is shown inFigures 3 and 4. It consists of three funnels:a) an upper (charging) funnel;b) a middle (feed control) funnel with a metal, glass or plastic orifice which provides the

30、required feed rate;c) a lower (delivery) funnel.5.3 Test chamber (see Figure 3), consisting of a tightly sealed enclosure with a door to permit ready accessfor mounting and removing the test pieces. The blast assembly is mounted vertically in the top of the testchamber so that the downward stream of

31、 abrasive travels from the tip of the glass nozzle to thesurface of the test piece.The chamber shall be fitted with an exhaust vent and a butterfly valve to regulate the pressure in the chamberduring the test. A cloth dust-collecting bag of adequate capacity may fitted over the end of the exhaust ve

32、nt.The upper part of the chamber shall be fitted with a tube and stopcock to allow the connection of a manometer.2,84 mm 2,92 mm2,36 mm 2,44 mm9,4 mm 4,7 mm1,5 mm 10 mm115 mm 7mm 1,1 mm70 mm7,15 mm 9,53 mm2mm4,5 mm 7,9 mm117 mm2mm1 000 g (450 15) s(203 1) mmBS EN ISO 16282:20083Dimensions in millime

33、tresKey1 venturi housing2 air supply3 supply of abrasive4 air-delivery nozzle: inside diameter at inlet to inside diameter at outlet to 5 tubing nut6 steel stabilizing sleeve7 brass rod for positioning glass tube8 glass tube with grommet9 top of test chamberFigure 1 Example of venturi blast assembly

34、2,84 mm 2,92 mm2,36 mm 2,44 mmBS EN ISO 16282:20084Dimensions in millimetresKey1 brass rod for positioning glass tube2 glass tube with grommet3 tubing nut4 steel stabilizing sleeve5 sand blast gun6 air-delivery nozzleFigure 2 Example of blast gun (dismantled)BS EN ISO 16282:200855.4 Manometer, capab

35、le of measuring up to ( of water), to measure the pressure inside thechamber during the test.5.5 Vacuum gauge, capable of measuring up to of mercury (gauge pressure), to check the pressureat the entry port for the abrasive on the blast assembly.5.6 Balance, capable of weighing to the nearest .5.7 Ca

36、llipers, capable of measuring to the nearest .5.8 Test sieves, conforming to the requirements of ISO 565.Key1 air supply line2 pressure regulator3 pressure gauge4 feed system5 stopcock6venturi7 butterfly valve8 manometer9 steel tube10 exhaust vent11 test chamber12 glass tube13 test pieceFigure 3 Sch

37、ematic diagram of abrasion tester400 Pa 41 mm750 mm0,1 g0,5 mmBS EN ISO 16282:20086Key1 blast assembly2 air pressure regulator3 glass tube and steel stabilizing sleeve4 test piece5 adjustable platformFigure 4 Abrasion tester Introduction of test pieceBS EN ISO 16282:200875.9 Abrasive, consisting of

38、silicon carbide with a particle-size distribution as given in Table 1. Before use,remove the material retained on the ISO sieve and that passing the ISO sieve.NOTE This silicon carbide corresponds to FEPA grit size grade P36.5.10 Compressed-air supply: Clean, dry, compressed air supplied to the blas

39、t assembly at the requiredpressure by means of a regulator and an air-pressure gauge capable of being read in increments,mounted as close to the blast assembly as possible.6 Test pieces6.1 GeneralThe number of items to be tested and the number of test pieces per item shall be agreed between the part

40、iesand stated in the test report.6.2 Shaped refractoriesFor all materials except the most abrasion-resistant, test pieces measuring shallbe cut from refractory bricks or shapes so that one of the square faces of each test piece is a flat original surfacenot bearing a brand mark (see, however, Note 1

41、 to Clause 7). Test pieces measuringmay be used for the most abrasion-resistant materials. The test piece dimensionsshall be stated in the test report.6.3 Unshaped refractoriesTest pieces of the above-mentioned dimensions shall be prepared directly from the material under test. Thepreparation proced

42、ure, including treatment and firing and the temperature of firing, shall be agreed between theinterested parties. One of the square faces of each test piece shall be the face which was in contact with thebottom of the mould (see, however, Note 1 to Clause 7). The test piece preparation conditions an

43、d the testpiece dimensions shall be stated in full in the test report.7 ProcedureDry the test pieces at to constant mass.Weigh the test pieces to . Determine their volume by measuring their length, width and thickness to thenearest using callipers (5.7).Table 1 Sieve analysis of abrasiveSize of open

44、ing(ISO 565 R 40/3)Amount retained850 Trace600300212 2 max.Trace850m 300mm %20 280 3 2127 kPa114 mm 114 mm 64 mm100 mm 100 mm 25 mm(110 5)C0,1 g0,5 mmBS EN ISO 16282:20088Place one of the test pieces in the test chamber with a square face perpendicular to the glass nozzle (see,however, Note 2), at a

45、 distance of from the nozzle tip. For test pieces from shaped refractories,the flat original surface not bearing a brand mark shall be used for the test (see, however, Note 1). For testpieces from unshaped refractories, the test surface shall be the face which was in contact with the bottom of themo

46、uld (see, however, Note 1).NOTE 1 If required, and agreed between the interested parties, other faces, including cut surfaces, may be used in the test.NOTE 2 If agreed between the parties, an impact angle other than may be used in the test.Turn on the compressed-air supply and regulate the pressure

47、to . Check the air pressure beforeand after the abrasive has run through the system.Measure the pressure in the test chamber using the water manometer and maintain the pressure in thechamber at ( of water) by means of the butterfly valve in the exhaust vent.After the pressure of the compressed air s

48、upplied to the blast assembly and the test chamber pressure havebeen adjusted, disconnect the abrasive feed line and connect the vacuum gauge to the abrasiveentry port on the blast assembly (see Note 3). If the vacuum gauge does not show a minimum pressure of, check the position of the glass tube or

49、 the condition of the air-delivery nozzle. After obtaining thecorrect vacuum, reconnect the abrasive feed line and recheck the test chamber pressure before placingof dry abrasive in the upper (charging) funnel. The lower (delivery) funnel shall not be completelyfilled or flooded with abrasive. Connect the feed mechanism to the blast assembly. It shall deliver the abrasive inthe specified time of .NOTE 3 As an alternative, a suitable vacuum gauge may be built into the apparatus (see Figure 4).Remove the test piece f