Non-destructive examinatio感慨岁月催人老的诗句
n of fusion welds 熔焊焊缝的非破坏性检验
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Visual examination目检
English version of DIN EN 970 DIN EN 970的英文版本
European Standard EN 970:1997 has the status of a DIN Standard. 欧洲标准EN 970:1997具有DIN标准的地位。
A comma is ud as the decimal marker. 逗点用作十进制小数点标记。
National foreword 国家标准前言
This standard has been prepared by CENiTC 121. 本标准已由CEN/TC121制订。 The responsible German body involved in its preparation was the NormenausschuB SchweiBtechnik (Welding Standards Committee).参与其制定的负责任的德国机构是NormenausschuB SchweiBtechnik（焊接标准委员会）。 EN compris 13 pages. EN包含
13页。
ICS 25.160.40 Descriptors: Testing, welded joints, visual examination, metals. ICS 25.160.40，关键词：测试、焊接连接、目检、金属。
English version英文版本
Non-destructive examination of fusion welds 熔焊焊缝的非破坏性检验
Visual examination 目检
This European Standard was approved by CEN on 1996-1 2-1 2. 本欧洲标准由CEN在1996年12月12日批准。
CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. CEN成员必须遵守CEN/CENELEC内部规定，该规定规定了在没有任何改变的情况下赋予本欧洲标准以国家标准地位的条件。 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. 有关这些国家标准的最新清
单及参考书可通过向中央秘书处或任何CEN成员索取而获得。 The European Standards exist in three official versions (English, French, German). 该欧洲标准具有三个正式的版本（英语、法语和德语版本）。 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. 由CEN成员负责翻译成其自己语言的任何其他语言的版本，并且告知了中央秘书处，具有同正式版本一样的地位。 CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.CEN成员是国家标准的团体，包括：奥地利、比利时、丹麦、芬兰、法国、德国、希腊、冰岛、爱尔兰、意大利、卢森堡、荷兰、挪威、葡萄牙、西班牙、瑞典、瑞士、及英国。
目录
Foreword前言 4
1 Scope 1范围 4
2 Normative references 2标准参考 5
3 Examination conditions and equipment 3 检测条件和设备 6
4 Personnel 4人员 7
5 Visual examination -General 5目检-总则 7
6 Visual examination of joint preparation 6 焊接连接准备的目检 7
7 Visual examination during welding 7在焊接期间目检 8
8 Visual examination of the finished weld 8 以焊好焊缝的目检 9
8.1 General8.1总则 9
8.2 Cleaning and dressing 8.2清洁及磨光 9
8.3 Profile and dimensions 8.3外形及尺寸 10
8.5 Post-weld heat treatment 8.5 焊接后的热处理 11
9 Visual examination of repaired welds 9 经修理的焊缝的目检 11
9.1 General 9.1总则 11
9.2 Partially removed weld 9.2经部分去除的焊缝 12
9.3 Completely removed weld 9.3 完全去除焊缝 12
9.4 Examination 9.4检测 12
10 Examination records 10检测记录 12
Annex A (informative) 附录A（仅供参考） 14
Foreword前言
This European Standard has been prepared by Technical Committee CEN/TC 121 "Welding", the cretariat of which is held by DS . 本欧洲标准已经由技术委员会CEN / TC 121“焊接”制订，由DS控制其秘书处。
This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorment, at the latest by August 1997, and conflicting national standards shall be withdrawn at the latest by August 1997 .本欧洲标准最迟在1997年8月应该通过文字或签字声明而被给与国家标准的地位，并且相矛盾的国家标准最迟应该在1997年8月撤消。
This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports esntial requirements of EU Directive(s) . 本欧洲标准在赋予给CEN的委托书下由欧洲委员会及欧洲自由贸易联盟制订，并且支持EU指令的本质要求。
It should be noticed that a standard covering the general principles of visual examination is under preparation by CEN/TC 138 . 应该注意到，覆盖目检的总则由CEN / TC 138制订。
According to the CENICENELEC Internal 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. Norway. Portugal. Spain. Sweden. Switzerland and the United Kingdom .按照CEN/CENELEC内部法规，下列国家的国家标准组织必须实施本欧洲标准：奥地利、比利时、丹麦、芬兰、法国、德国、希腊、冰岛、爱尔兰、意大利、卢森堡、荷兰、挪威、葡萄牙、西班牙、瑞典瑞士、及英国。
