1、DEUTSCHE NORM Januarv 1999 Zinc and zinc alloys - Castings English version of DIN EN 12844 Specif ications DIN EN 12844 ICs 77.150.60 Descriptors: Zinc, castings, requirements, testing. Supersedes DIN 1743-2, April 1978 edition. Zink und Zinklegierungen - Gustcke - Spezifikationen European Standard
2、EN 12844 : 1998 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 209. The responsible German body involved in its preparation was the Normenausschu Nichteisenmetalle (Non- ferrous Metals Standards Committee), Technic
3、al Committee Zink. Amendments DIN 1743-2, April 1978 edition, has been superseded by the specifications of EN 12844. Previous editions DIN 1724: 1943-02, 1944-07; DIN 1743: 1936-09, 1940-03, 1952-09; DIN 1743-2: 1967-06, 1978-04. EN comprises 1 O pages. No pari of this standard may be reproduced wit
4、hout the prior permission of Ref. No. DIN EN 12844 : 1999-0 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). . . English price group 08 Sales No 1108 06 99 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E
5、.V.- EnglishLicensed by Information Handling ServicesCOPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12844 November 1998 ICs 77.150.60 Descriptors: Zinc, castings, requirements, testing. English v
6、ersion Zinc and zinc alloys - Castings Specifications Zinc et alliages de zinc - Pices moules - Spcifications Zink und Zinklegierungen - Gu- stcke - Spezifikationen This European Standard was approved by CEN on 1998-1 0-22. CEN members are bound to comply with the CENKENELEC Internal Regulations whi
7、ch stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European St
8、andards exist 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 language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national st
9、andards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Eur
10、opisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1998. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 12844 : 1998 E COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Inf
11、ormation Handling ServicesPage 2 EN 12844: 1998 Contents Foreword 2 1 Scope . 3 2 Normative references . 3 3 Definitions . 3 4.1 General 3 4 4.3 Short designation . 4 4 Casting designation . 3 4.2 Designation by number 5 Manufacture 6 Ordering information 7 Requirements 7.1 Chemical composition 7.2
12、Additional requirements . 8 Sampling and analysis . 8.1 Sampling 8.2 Analysis 1 O Inspection documents 9 Marking and labelling . 5 11 Rounding of numbers Annex A (informative) Relationship between the zinc alloy designation for castings used in this standard and the corresponding designations previo
13、usly used in a number of countries . 8 9 Annex C (informative) Recycling mark . 1 O 6 Annex 6 (informative) Properties of zinc alloy die castings at 20 “C Foreword This European Standard has been prepared by Technical Committee CEN/TC 209 “Zinc and zinc alloys”. the secretariat of which is held by A
14、FNOR . 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 May 1999. and conflicting national standards shall be withdrawn at the latest by May 1999 . This European Standard is one of a series concern
15、ing zinc and zinc alloys for foundry purposes . According to the CENKENELEC Internal Regulations. the national standards organizations of the following countries are bound to implement this European Standard: Austria. Belgium. Czech Republic. Denmark. Finland. France. Germany. Greece. Iceland. Irela
16、nd. Italy. Luxembourg. Netherlands. Norway. Portugal. Spain. Sweden. Switzerland and the United Kingdom . COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 3 EN 12844: 1998 1 Scope This European Standard specifies the designation, chemical compos
17、ition, marking and other requirements for zinc alloy castings. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed here
18、after. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 1559-1, Founding - Technical con
19、ditions of delivery - Part I : General. EN 1 559-6, Founding - Technical conditions of delivery - Part 6 : Addtional requirements for zinc alloy castings. EN 1774, Zinc and zinc alloys - Alloys for foundrypuposes - Ingot and liquid EN 1 0204, Metallic products - Types of inspection documents. EN 1 2
20、0 1 9, Zinc and zinc alloys - Optical emission spec trornetic analysis, IS0 7000, Graphical symbols for use on equipment - Index and synopsis. 3 Definitions For the purposes of this standard, the following definitions apply : 3.1 pressure die casting Metal object produced by injecting molten metal u
21、nder high pressure into a metal die. 3.2 permanent mould casting Metal object produced by introducing molten metal by gravity or low pressure into a mould or die constructed of durable material, usually iron or steel, and allowing it to solidify. NOTE When a graphite mould is used, the process is kn
22、own as “graphite permanent mould casting“. 3.3 sand casting Metal object produced by introducing molten metal by gravity into a sand mould and allowing it to solidify. 4 Casting designation 4.1 General Zinc alloy castings conforming to this standard shall be designated by number or short designation
23、 in accordance with the system given in EN 1774, but having a letter P in the second character position. P indicates that the product is a casting. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 4 EN 12844: 1998 4.2 Designation by number The a
24、lloy number shall be in accordance with the system given in EN 1774. EXAMPLE copper, remainder zinc, shall be designated : ZP041 O. A zinc alloy casting made from an alloy consisting nominally of 4 Yo aluminium, 1 % 4.3 Short designation The short designation shall be in accordance with the system g
25、iven in EN 1774. EXAMPLE copper, remainder zinc, shall be designated : ZP5. A zinc alloy casting made from an alloy consisting nominally of 4 % aluminium, 1 % 5 Manufacture The castings according to this standard shall be manufactured from : a) zinc alloy ingot or liquid conforming to one of the all
26、oys given in EN 1774 ; and/or b) the die casters own process returns, e.g. sprues, runners and overflows ; and/or c) the die casters own castings rejected from foundry secondary operations. Used recycled materials and all other materials which could cause contamination such as shredder scrap shall n
27、ot be used. 6 Ordering information In order to facilitate the enquiry, order and confirmation of order procedures between the purchaser and the supplier, the purchaser shall state on the enquiry and order the following information : a) the number of this European Standard (EN 12844) ; b) the designa
28、tion of the casting required (see clause 4) ; c) any special requirements which shall be agreed by the time of acceptance of the order (see EN 1559-1 and EN 1559-6). 7 Requirements 7.1 Chemical composition Zinc alloy castings shall conform to the relevant chemical composition given in table 1. 7.2 A
29、dditional requirements Any additional requirements shall be agreed between the purchaser and the supplier by the time of acceptance of the order. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 5 EN 12844: 1998 8 Sampling and analysis 8.1 Sampl
30、ing For routine sampling of a batch of castings for chemical analysis, the sampling techniques and frequency shall be at the discretion of the supplier. In case of dispute, the procedures and frequency of sampling for chemical analysis shall be agreed between the purchaser and the supplier. 8.2 Anal
31、ysis 8.2.1 in accordance with 8.1 shall be at the discretion of the supplier. For the routine testing of castings, the methods of analysis to be used on the samples obtained 8.2.2 In the case of dispute concerning the conformity of the castings to the chemical composition limits, when the sample qua
32、ntity is sufficient, the chemical composition shall be determined on the samples obtained by optical emission spectrometric analysis, using the methods given in EN 12019. The analysis sample shall then be : - a purpose made sample, prepared by remelting, to give a test piece having a minimum mass of
33、 100 g. In this case, the selection of the samples shall be such that it is representative of the tested lot ; - if the casting to be tested is too small and it is not possible to collect sufficient into a 100 g specimen, the sampling and test methods shall be agreed between the parties, and expert
34、knowledge should be sought. A test report shall give full details of the analysis sample. 9 Marking and labelling Where possible, the castings shall be marked or labelled with the following information unless the supplier and purchaser agree to omit some of the following markings : a) producers mark
35、 ; b) c) d) production period. short designation (see table 1) ; recycling mark (see annex C) ; 10 Inspection documents If requested by the purchaser at the time of ordering, the supplier shall furnish inspection documents with each consignment of castings. The documentation shall be as requested by
36、 the purchaser and shall be in accordance with either a) or b) as follows : a) a certificate in accordance with EN 10204, based either on : - tests carried out on the delivered batch of castings ; or - the producers process control systems ; COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- English
37、Licensed by Information Handling ServicesPage 6 EN 12844: 1998 b) a declaration of conformity of the consignment with the order requirements, signed by the suppliers authorized representative. 11 Rounding of numbers In expressing the results for the analysis, the values obtained shall be rounded in
38、one step to the same number of figures used to express the specified limit in table 1. The following rules shall be used for rounding : a) if the figure immediately after the last figure to be retained is less than 5, the last figure to be retained shall be kept unchanged ; if the figure immediately
39、 after the last figure to be retained is equal to or greater than 5, the last figure to be retained shall be increased by 1. b) COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 7 EN 12844: 1998 h E E op Y C .- C O v) O .- c .- E u vj m N a COPYR
40、IGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 8 EN 12844: 1998 U.K ES1004 Annex A (informative) France NF A 55- Relationship between the zinc alloy designation for castings used in this standard and the corresponding designations previously used i
41、n a number of cou nt ries Table A.l - Former national zinc alloy designations and corresponding designations in this standard Spain UNE 37302-88 Alloy number Short decigna- lion Germany DIN 1743-2 ZP0400 ZP3 2400 ZnA14 AlloyA 1 2-A4 ZP041 O ZP5 2410 ZnAI4Cul Alloy B Z-A4U1 Z-A4U3 Z-ABUl ZP0430 ZP2 2
42、430 ZnA14Cu3 ZP061 O ZP6 2610 ZnA16Cul ZP0610 ZP8 ZnAll 1 Cul ZPlllD ZP2720 ZPOOI o ZP12 ZP27 ZP16 1) According to UNI 3717 2) According lo UNI 9408 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 9 EN 12844: 1998 z O m O P m In - O N P O c z P
43、 - 8 d b m s N m P O b c B - P O P O in h m +a - in m O in m c m m m o m O b m e - m m m m O b m I - b m O N m m c m ? 8 C U K E r! .- f - COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 10 EN 12844: 1998 Annex C (i n f o rm a t ive) Recycling
44、mark The recycling mark (figure C.l) shall be in accordance with IS0 7000, symbol number 1135-BA. X short designation, Figure C.l - Recycling mark EXAMPLE Zinc alloy casting ZP0410 T h . . ZP5 a . . . &s . . . . . . . . . . COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling Services
