1、BS EN 4637:2010ICS 49.040NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Blast media WhitecorundumThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 May2010. BSI 2010ISBN 978 0 580 56460 4Ame
2、ndments/corrigenda issued since publicationDate CommentsBS EN 4637:2010National forewordThis British Standard is the UK implementation of EN 4637:2010.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic materials for aerospace purposes(excluding textiles)
3、.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom le
4、gal obligations.BS EN 4637:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4637 April 2010 ICS 49.040 English Version Aerospace series - Blast media - White corundum Srie arospatiale - Produit de projetage - Corindon blanc Luft- und Raumfahrt - Strahlmittel - Edelkorund, wei This European S
5、tandard was approved by CEN on 6 January 2010. 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 references concerni
6、ng such national standards may be obtained on application to the CEN 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 CEN member into its own l
7、anguage and notified to the CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
8、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2
9、010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4637:2010: EBS EN 4637:2010EN 4637:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Characteristics .4Annex A (normative) Characteri
10、stics of corundum .5Annex B (normative) Tyler type splitting method . 34Annex C (normative) Stack Splitting Method 36BS EN 4637:2010EN 4637:2010 (E) 3 Foreword This document (EN 4637:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). A
11、fter enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of
12、a national standard, either by publication of an identical text or by endorsement, at the latest by October 2010, and conflicting national standards shall be withdrawn at the latest by October 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject o
13、f patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgari
14、a, Croatia, 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, Switzerland and the United Kingdom. BS EN 4637:2010EN 463
15、7:2010 (E) 4 1 Scope This standard specifies the characteristics of white corundum used as blast media for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. F
16、or 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 of openings ISO 8486-1, Bonded abrasives Determination and designation of grain size distributi
17、on Part 1: Macrogrits F4 to F220 ISO 8486-2, Bonded abrasives Determination and designation of grain size distribution Part 2: Microgrits F230 to F2000 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 ds3 max. the grain size (theoretical grain
18、 diameter) must not exceed the maximum permissible ds3-valueat the 3 % point of the grain size distribution curve 3.2 ds50the median grain size (theoretical grain diameter) must be within the specified tolerances of the ds50-valueat the 50 % point of the grain size distribution curve 3.3 ds94 min. t
19、he grain size (theoretical grain diameter) must at least attain the ds94-valueat the 94 % point of the grain size distribution curve 4 Characteristics The characteristics for each product are specified in the following annexes. BS EN 4637:2010EN 4637:2010 (E) 5 Annex A (normative) Characteristics of
20、 corundum DESIGNATION: White corundum F 12 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 1,20 mm to 2,80 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silic
21、a 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2,80 mm
22、 2 mm 1,40 mm % RESIDUE 0 20 70 TEST SIEVES - APERTURE 1,20 mm % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 6 DESIGNATION: White
23、corundum F 14 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 1 mm to 2,40 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL CO
24、MPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2,40 mm 1,70 mm 1,20 mm % RESIDUE 0 20
25、70 TEST SIEVES - APERTURE 1 mm % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 7 DESIGNATION: White corundum F 16 Main use: (for inf
26、ormation) Surface preparation Surface reconditioning GRAIN SIZE: 850 m to 2 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angu
27、lar and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 2 mm 1,40 mm 1 mm % RESIDUE 0 20 70 TEST SIEVES - APERTURE 850 m % REMAIN
28、DER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 8 DESIGNATION: White corundum F 20 Main use: (for information) Surface preparation Surface r
29、econditioning GRAIN SIZE: 710 m to 1,70 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (ty
30、pical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,70 mm 1,18 mm 850 m % RESIDUE 0 20 70 TEST SIEVES - APERTURE 710 m % REMAINDER 3 8 METHOD OF DETERMINATION
31、OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 9 DESIGNATION: White corundum F 22 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 600 m
32、to 1,40 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoo
33、p hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,40 mm 1 mm 710 m % RESIDUE 0 20 70 TEST SIEVES - APERTURE 600 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: accordi
34、ng to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 10 DESIGNATION: White corundum F 24 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 500 m to 1,18 mm DESCRIPTION: fused alum
35、inium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DE
36、NSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1,18 mm 850 m 600 m % RESIDUE 0 25 65 TEST SIEVES - APERTURE 500 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling me
37、thods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 11 DESIGNATION: White corundum F 30 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 430 m to 1 mm DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground
38、 corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 94
39、0 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 TEST SIEVES - APERTURE 1 mm 710 m 500 m % RESIDUE 0 25 65 TEST SIEVES - APERTURE 425 m % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this stan
40、dard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 12 DESIGNATION: White corundum F 36 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 360 m to 850 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Arti
41、ficial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAI
42、N SIZE DISTRIBUTION ISO 565 (m) TEST SIEVES - APERTURE 850 600 425 % RESIDUE 0 25 65 TEST SIEVES - APERTURE 355 % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS E
43、N 4637:2010EN 4637:2010 (E) 13 DESIGNATION: White corundum F 40 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 300 m to 710 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina
44、99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 (m) TEST SIEV
45、ES - APERTURE 710 500 355 % RESIDUE 0 30 65 TEST SIEVES - APERTURE 300 % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 14 DESIGNATIO
46、N: White corundum F 46 Main use: (for information) Surface preparation Surface reconditioning GRAIN SIZE: 250 m to 600 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHE
47、MICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9 (Mohs hardness) 6 DENSITY: - True with pyknometer - 3 940 kg/m37 GRAIN SIZE DISTRIBUTION: GRAIN SIZE DISTRIBUTION ISO 565 (m) TEST SIEVES - APERTURE 600 425 300 % RESIDUE 0 30
48、65 TEST SIEVES - APERTURE 250 % REMAINDER 3 8 METHOD OF DETERMINATION OF GRAIN SIZE DISTRIBUTION: according to ISO 8486-1 (for sampling methods, see Annexes B and C of this standard). 9 SPECIAL INSTRUCTIONS: None. BS EN 4637:2010EN 4637:2010 (E) 15 DESIGNATION: White corundum F 54 Main use: (for inf
49、ormation) Surface preparation Surface reconditioning GRAIN SIZE: 210 m to 500 m DESCRIPTION: fused aluminium oxide ASPECT: MATERIAL: Ground corundum COLOUR: White 1 ORIGIN: Artificial 2 CHEMICAL COMPOSITION: - Alumina 99 % - Free silica 0,1 % 3 CONTROLLED CHEMICAL COMPONENTS: None 4 GRAIN SHAPE: Angular and massive grain 5 HARDNESS (typical values): 2 100 kg/mm2(Knoop hardness) 9
