EN 1564-2011 en Founding - Ausferritic spheroidal graphite cast irons《铸造 奥氏体铸铁》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1564:2011Founding Ausferriticspheroidal graphite cast ironsBS EN 1564:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1564:2011.

2、Itsupersedes BS EN 1564:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/111, Steel Castings and Forgings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to inclu

3、de all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 67230 9ICS 77.080.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy an

4、d Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedBS EN 1564:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1564 November 2011 ICS 77.080.10 Supersedes EN 1564:1997English Version Founding - Ausferritic spheroidal graphite cast irons Fonderie - F

5、ontes ausferritiques graphite sphrodal Gieereiwesen - Ausferritisches Gusseisen mit Kugelgraphit This European Standard was approved by CEN on 24 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard

6、 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 three official versions (English, F

7、rench, 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 bodies of Austria, Belgium, Bulgar

8、ia, 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 United Kingdom. EUROPEAN COMMITTEE FOR S

9、TANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1564:2011: EBS EN 1564:2011EN 1564:2011 (E) 2 Co

10、ntents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .64 Designation 75 Order information 76 Manufacture 87 Requirements .87.1 General 87.2 Test pieces machined from cast samples .87.2.1 General 87.2.2 Impact energy .87.3 Test pieces machined from samples cut

11、 from a casting .87.4 Hardness 107.5 Graphite structure. 107.6 Matrix structure . 108 Sampling 108.1 General . 108.2 Cast samples . 118.2.1 Size of cast samples . 118.2.2 Frequency and number of tests 118.2.3 Separately cast samples 118.2.4 Side-by-side cast samples . 118.2.5 Cast-on samples . 128.2

12、.6 Test pieces machined from cast samples 128.3 Samples cut from a casting . 129 Test methods . 179.1 Tensile test 179.2 Impact test . 189.3 Hardness test 199.4 Graphite and matrix structure examination . 1910 Retests . 1910.1 Need for retest . 1910.2 Test validity . 2010.3 Non-conforming test resul

13、ts 2010.4 Heat treatment of samples and castings 2011 Inspection documentation . 20Annex A (normative) Abrasion resistant grades of ausferritic spheroidal graphite cast iron . 21Annex B (informative) Comparison of ausferritic spheroidal graphite cast iron material designations according to EN 1560 a

14、nd ISO/TR 15931 2 7 . 23Annex C (informative) Guidance values for tensile strength and elongation for test pieces machined from samples cut from a casting 24Annex D (informative) Guidance values for Brinell hardness . 25BS EN 1564:2011EN 1564:2011 (E) 3 Annex E (informative) Determination of the har

15、dness range . 26Annex F (informative) Nodularity. 27Annex G (normative) Sectioning procedure for cast samples . 28Annex H (informative) Un-notched impact test 29Annex I (informative) Additional information on mechanical and physical properties . 31Annex J (informative) Machinability of ausferritic s

16、pheroidal graphite cast irons 33Annex K (informative) Significant technical changes between this European Standard and the previous edition . 35Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 36Bibliography 37BS EN 1564:2011E

17、N 1564:2011 (E) 4 Foreword This document (EN 1564:2011) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorse

18、ment, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. This document supersedes EN 1564:1997. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 7 “Spheroidal graphite, silicon molybdenum and austempered duc

19、tile iron“ to revise EN 1564:1997. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is

20、an integral part of this document. Attention is drawn 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. Annex K provides details of significant technical c

21、hanges between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Esto

22、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 1564:2011EN 1564:2011 (E) 5 Introduction Ausferritic spheroidal grap

23、hite cast iron is a cast alloy, iron, carbon and silicon based, the carbon being present mainly in the form of spheroidal graphite particles. NOTE 1 Ausferritic spheroidal graphite cast iron is also known as austempered ductile iron (ADI). Compared with the spheroidal graphite cast irons as specifie

24、d in EN 1563 1, this material combines higher strength and toughness properties as a result of the ausferritic matrix structure. This European Standard classifies ausferritic spheroidal graphite cast irons in accordance with the mechanical properties of the material. The mechanical properties of the

25、se ausferritic spheroidal graphite cast irons depend on the graphite and the matrix structure. The required structure is obtained by selecting the appropriate composition and subsequent processing. The mechanical properties of the material can be evaluated on machined test pieces prepared from cast

26、samples or samples cut from a casting. Five grades of ausferritic spheroidal graphite cast iron are defined by the mechanical properties measured on machined test pieces prepared from cast samples. When, for these grades, hardness is a requirement of the purchaser as being important for the applicat

27、ion, Annex C provides guidance values for hardness. Two grades of ausferritic spheroidal graphite cast iron are defined in Annex A in accordance with their hardness. These cast irons are used in applications (e.g. mining, earth moving) where high abrasion resistance is required. In this standard a n

28、ew designation system by number, as established in EN 1560 2, is given. NOTE 2 This designation system by number is based on the principles and the structure as set out in EN 10027-2 3 and so corresponds with the European numbering system for steel and other materials. Some ausferritic spheroidal gr

29、aphite cast iron grades can be used for pressure equipment. The permitted material grades of ausferritic spheroidal graphite cast iron for pressure applications and the conditions for their use are given in specific product or application standards. For the design of pressure equipment, specific des

30、ign rules apply. Annex ZA gives information relating to the conformance of permitted ausferritic spheroidal graphite cast iron grades to the Pressure Equipment Directive 97/23/EC. BS EN 1564:2011EN 1564:2011 (E) 6 1 Scope This European Standard defines the grades and the corresponding requirements f

31、or ausferritic spheroidal graphite cast irons. This European Standard specifies five grades of ausferritic spheroidal graphite cast iron by a classification based on mechanical properties measured on machined test pieces prepared from cast samples. This European Standard also specifies two grades by

32、 a classification as a function of hardness. This European Standard does not cover technical delivery conditions for iron castings, see EN 1559-1 4 and EN 1559-3 5. NOTE Grades given in Annex A are not intended for pressure equipment applications. 2 Normative references The following referenced docu

33、ments are indispensable for the application 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. EN 764-5:2002, Pressure Equipment Part 5: Compliance and Inspection Documentat

34、ion of Materials EN 10204:2004, Metallic products Types of inspection documents EN ISO 148-1:2010, Metallic materials Charpy impact test Part 1: Test method (ISO 148-1:2009) EN ISO 945-1:2008, Microstructure of cast irons Part 1: Graphite classification by visual analysis (ISO 945-1:2008) EN ISO 650

35、6-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2005) EN ISO 6892-1:2009, Metallic materials Tensile testing Part 1: Method of test at ambient temperature (ISO 6892-1:2009) 3 Terms and definitions For the purposes of this document, the following terms and definitions ap

36、ply. 3.1 ausferritic spheroidal graphite cast iron iron based cast material with the carbon being present mainly in the form of spheroidal graphite particles, with an ausferritic matrix structure NOTE Usually this ausferritic matrix structure is obtained by an austempering heat treatment. 3.2 graphi

37、te spheroidising treatment operation that brings the liquid iron into contact with a substance to produce graphite in the predominantly spheroidal (nodular) form during solidification NOTE This operation is often followed by a second one called inoculation. BS EN 1564:2011EN 1564:2011 (E) 7 3.3 aust

38、emper heat treatment of spheroidal graphite cast iron process, consisting of heating the castings above the AC1temperature and holding a sufficient time to increase the carbon content of the austenite, followed by cooling at a rate sufficient to avoid the formation of pearlite and transforming the m

39、atrix structure for a time and a temperature (above the martensite start temperature) sufficient to produce the desired properties NOTE This process produces a microstructure that consists predominantly of ferrite and austenite. This microstructure is called ausferrite. 3.4 cast sample quantity of m

40、aterial cast to represent the cast material, including separately cast sample, side by side cast sample and cast-on sample 3.5 separately cast sample sample cast in a separate sand mould under representative manufacturing conditions and material grade 3.6 side-by-side cast sample sample cast in the

41、mould alongside the casting, with a joint running system 3.7 cast-on sample sample attached directly to the casting 3.8 relevant wall thickness wall thickness representative of the casting, defined for the determination of the size of the cast samples to which the mechanical properties apply 4 Desig

42、nation The material shall be designated either by symbol or by number as given in Tables 1, 2 or A.1. In the case of samples cut from the casting the letter C is added at the end of the designation by symbol, see EN 1560. NOTE The comparison of EN 1564 grade designations with the grades from the ISO

43、 standard for ausferritic spheroidal graphite cast irons, ISO 17804:2005 6, is given in Annex B. 5 Order information The following information shall be supplied by the purchaser: a) the number of this European Standard; b) the designation of the material; c) the relevant wall thickness of the castin

44、g; d) any special requirements. All requirements shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order e.g. technical delivery conditions according to EN 1559-1 and EN 1559-3. BS EN 1564:2011EN 1564:2011 (E) 8 6 Manufacture Unless otherwise specified by th

45、e purchaser, the method of manufacture of ausferritic spheroidal graphite cast irons and heat treatment required to obtain the specified mechanical properties and microstructure shall be left to the discretion of the manufacturer. The manufacturer shall ensure that the requirements defined in this s

46、tandard are met for the material grade specified in the order. All agreements between the manufacturer and the purchaser shall be made by the time of acceptance of the order. 7 Requirements 7.1 General The property values apply to ausferritic spheroidal graphite cast irons cast in sand moulds or mou

47、lds of comparable thermal behaviour. Subject to amendments to be agreed upon in the order, they can apply to castings obtained by alternative methods. The material designation is based on the minimum mechanical properties obtained in cast samples with a thickness or diameter of 25 mm. The designatio

48、n is irrespective of the type of cast sample. Mechanical properties are wall thickness dependant as shown in Table 1. NOTE Tensile testing requires sound test pieces in order to guarantee pure uni-axial stress during the test. 7.2 Test pieces machined from cast samples 7.2.1 General The mechanical p

49、roperties of ausferritic spheroidal graphite cast iron test pieces shall be as specified in Table 1, and, if applicable, in accordance with the requirements given in 7.2.2. 7.2.2 Impact energy The impact energy values given in Table 2 at room temperature, if applicable, shall only be determined if specified by the purchaser by the time of acceptance of the order. 7.3 T