DIN EN 1043-2-1996 金属材料焊缝破坏试验.硬度试验.第2部分焊接接缝显微硬度试验2542.doc

DIN EN 1043-2-1996 金属材料焊缝破坏试验.硬度试验.第2部分焊接接缝显微硬度试验2542.yang64ICS 25.160.40 DEUTSCHE NORM Hardness testing of welds in metallic materials Micro hardness testing on welded joints English version of DIN EN 1043-2 Descriptors: Testing , welded joints, hardness test, metals. November 1996 DIN EN 1043-2 Zerst?rende Prfung von Schwei?verbindungen an metallischen Werkstoffen - H?rteprfung - Teil 2: Mikroh?rteprfung an Schwei?verbindungen European Standard EN 1043-2: 1996 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 121. The responsible German body involved in its preparation was the Normenausschu Schwei?technik (Welding Standards Committee), Technical Committee Zerst?rende Prfung von Schwei?verbindungen. DIN 50133 is the standard corresponding to International Standards ISO 6507-1 and ISO 6507-2 referred to in clause 2 of the EN. Standard referred t。(and not included in Normative references) DIN 50133 Vickers hardness testing of metallic materials - HV 0,2 to HV 100 。 No pa叫。1 this standard may be reproduced without the prior permission 01 DIN Deutsches Institut fr Normung e. V. , Berlin. Beuth Verlag GmbH, Berl旧， has the exclusive right 01 sale lor German Standards (DIN-Normen). EN comprises 10 pages. Ref. No. OIN EN 1043-2: 1996-11 Price group 07 Sales No. 1107 05.97 .yang6.yang6EUROPEAN STANDARD NORME EUROPEENNE EUROP?ISCHE NORM EN 1043-2 October 1996 ICS 25.160 .40 Descriptors: Testing, welded joints, hardness test, metals. English version Destructive tests on welds in metallic materials Hardness test Part 2: Micro hardness testing on welded joints Essais destructifs des soudures sur matriaux mtalliques - Essai de duret -Partie 2: Essai de microduret des assemblages souds Zerst?rende Prfung von Schwei?verbin-dungen an metallischen Werkstoffen -H?rteprfung - Teil 2: Mikroh?rteprfung an Schwei?verbindungen This European Standard was approved by CEN on 1996-05-23. 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 concerning such national standards may be obtained on application to the Central Secretariat 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 language and notified to the Central Secretariat has the same status as the official verslons. CEN members are the national standards bodies of Austria , Belgium, Denmark, Finland , France, Germany, Greece, Iceland , Ireland , Italy, Luxembourg, Netherlands, Norway, Por-tugal , Spain , Sweden , Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europ?isches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 。 1996. CEN - AII rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1043-2: 1996 E .yang6Page 2 EN 1043-2: 1996 Contents Foreword. 2 1 Scope . 3 2 Normative references . 3 3 Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .川. . . . . . . . . . . . 3 4 Denomin阳a剖ti阳。ns and symbol恒5 . . . . . .川. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .川. . . . . . . . . . . . . . . . . 3 5 Pr，陌epar阳at创ion oft饵es剖t spec创imens . . . . . . . . . . . . . . . . . . .11. . . . . . . . . . . . . .川. . . . . . . . . . . . . . . . . 4 6 Test procedure . . 4 6.1 Rows of indentations (R) .川.川.川. 4 6.2 Individual indentations (E). 5 7 Test results .川. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Foreword This European Standard has been prepared by Technical Committee CENITC 121 ;Weldingthe secretariat of which is held by DS. 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 April1997, and conflicting national standards shall be withdrawn at the latest by Ap时11997.According to the CEN/CENELEC Intemal Regulations , the national standards organizations of the following countries are bound to implement this European Standard: Austria , Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, N。阳ay ，Portugal , Spain , Sweden, Switzerland and the United Kingdom. .yang61 Scope Page 3 EN 1043-2: 1996 This standard specifies micro hardness tests on transverse sections of welded joints of metallic materials with high hardness gradients. It covers Vickers hardness tests in accordance with 180/018 6507斗， normally with test loads of 0 ,98 N to less than 49 N (HV 0 ,1 to less than HV 5). Testing should be carried out to ensure that the highest and/or the lowest level of hardness of both parent metal (in the case of dissimilar metal both parent metal) and weld metal is determined. The type and extent of testing shall be as specified by an application standard or by agreement between the contracting parties. This standard does not cover the hardness test as described in EN 1043-1. 2 Normative references This European 8tandard 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 hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European 8tandard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred t。applies. EN 1043-1 Oestructive test on welds in metallic materials - Hardness testing - Part 1: Hardness test on arc welded joints 180/018 6507-1: 1995 Metallic materials - Vickers Hardness test - Part 1 : Test method 3 Principle Micro hardness testing shall be carried out in accordance with 180/018 6507-1. The micro hardness tests may be carried out in the form of rows of indentations, R, or as individual indentations, E. When types of weld are not shown in the examples, the test procedure shall be appropriate to the welded joint. Unless otherwise specified , the test shall be carried out at ambient temperature (23 :t 5) oc. 4 Denominations and symbols The denominations and symbols to be used are specified in table 1 and represented on figures 1 to 3. .yang6Page 4 EN 1043-2: 1996 Table 1 : Denominations and symbols 8ymbol Oesignation Unit E Individual indentation R Row of indentation HV Vickers hardness L Oistance between the centrepoint of the indentations in mm heat affected zone H Oistance of rows of indentations from the reference line 阿1阿1(su厅ace or fusion line) Thickness of test specimen mm 1) The unit of symbolisation for Vickers hardness is given in 180/018 6507-1. 5 Preparation of test specimens The preparation of the test specimen shall be in accordance with 180/0186507-1. A cross-section of test piece shall be taken by mechanical cutting , usually transverse to the welded joint. This operation and the subsequent preparation of the surface shall be carried out carefully so that the hardness of the surface to be tested is not affected metallurgically. The surface to be tested shall be properly prepared and preferably etched, so that accurate measurements of the diagonal of the indentations can be achieved in the different zones of the welded joint. 6 Test procedure 6.1 Rows of indentations (R) Figures 1 to 3 give examples of hardness indentations made in rows including the distance from the surface so that these rows or parts of them permit an assessment of the welded joint. If required by the contracting parties, additional rows of indentations and/or different locations may be made. The location shall be stated in the test report. In metals such as aluminium, copper and their alloys, the rows on the root-side of butt welds (see figure 1) can not be necessa叩.The number and spacing of indentations shall be sufficient to define hardened or softened regions due to welding. Recommended distance between the centrepoint of the indentations in the heat affected zone (HAZ) is given in table 2. .yang6Page 5 EN 1043-2: 1996 Sufficient indentations shall be made to ensure that unaffected parent metal is tested. In the weld metal, the distance between indentations shall be selected and checked so that the results 。btained will enable assessment of the welded joint to be made. For metals which harden in the HAZ as a result of welding, two additional indentations in the HAZ shall be made at a distance not exceeding 0,5 mm between the centrepoint of the indentation and the fusion line (see figure 2). For other joint configurations or metals (e.g. austenitic steels) special requirements may be given by an application standard or by agreement between the contracting parties. Table 2 : Recommended distance, L, between the centrepoint 。f the indentations in the heat a仔ected zone (HAZ) Vickers Recommended distance between hardness indentations L 1) symbol m何1Ferrous metals 2) Aluminium, copper and their alloys HVO,1 0.2 0.6 to 2 HV 0.5 1,5 to 4 HV 5 0,7 2,5 to 5 1) The distance of any indentation from the previous indentation shall not be less than the value allowed for the previous indentation by ISO/OIS 6507-1. 2) Excluding austenitic steels. 6.2 Individual indentations (E) Figure 4 shows typical areas for the location of individual indentations. The series 1-4 gives the information about the unaffected parent metal, the series 5-8 refers to the HAZ and the series 9-11 to the weld metal. Otherwise. the location of the indentation can be determined on the basis 。f metallographic examination. To prevent the influence of deformation caused by an indentation, the minimum distance between the centrepoint of individual indentations in any direction shall not be less than 2,5 times the mean diagonal of the nearest adjacent indentation. For metals which harden in the HAZ as a result of welding, at least one indentation shall be made in the HAZ at a distance of 0,5 mm between the centrepoint of the indentation and the fusion line. For testing with individual indentations, the areas shall be numbered as shown in figure 4. 7 Test results The hardness values shall be recorded in relation to the position of the indentation. .yang6Page 6 EN 1043-2: 1996 8 Test rep。同A test report is required. The information to be recorded is listed in annexes A and B. The use of the format given in annexes A and B is recommended. Other formats may be used provided they contain all the required information. Additional information may be required by an appli臼tion standard or by agreement between the contracting parties. 户、ae、唱-Parent metal 亡:J Heat affected zone kHli:ij Weld metal Note: For thickness s 4 mm, the rows of indentations shall be at the mid thickness position. Figure 1 : Example of rows of indentation, R, in butt welds in ferrous metals (dimensions in millimete陌).yang6Page 7 EN 1043-2: 1996 -ESE-?-旦旦旦ZS3mWOE-u20XO25E3。tag-E舌-z。-mwHz-uc-Oz-L-。c。-Hmwu。JN3四rhz-e-z。-c豆-P扫3az-EEUE日c。NUHkmHm工口-mHEHCE而且图.yang6Page 8 EN 1043-2: 1996 _ Parentme 8D Heat affected zon 医JillI Weld metal Figure 3 : Location of the indentations in spot and projection seam welds in ferrous metals (dimensions in millimeters) _ Parentm副al D Heat affected zon Ijwul Weld me剧NOTE : Other areas are possible, by agreement. Figure 4 : Example showing areas for hardness testing with individual indentations (E) .yang6Annex A (informative) Hardness testing (R) on welded joints Type of hardness test : Identification of the test machine : Parent metal : Thick