1、DEUTSCHE NORM Januarv 2001 Recommendations for welding of metallic materials Part 3: Arc welding of stainless steels English version of DIN EN 1 O1 1-3 DIN - EN 1011-3 ICs 25.160.10 Schweien - Empfehlungen zum Schweien metallischer Werkstoffe -Teil 3: Lichtbogenschweien von nichtrostenden Sthlen (EN
2、 1 O1 1-3 : 2000) European Standard EN IS0 1 O1 1-3 : 2000 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 Welding. The responsible German body involved in its preparation was the Normenausschuss Schweifechnik (
3、Welding Standards Committee), Technical Committee Grundlagen der Qualifafssicherung beim Schweien. DIN V 1738 is the standard corresponding to International Standard ISO/TR 15608 referred to in clause 2 of the EN. National Annex NA Standard referred to (and not included in Normative references) DIN
4、V 1738 Welding -Guidelines for a metallic material grouping system (ISO/TR 15608 : 2000) EN comprises 30 pages. No pari of this standard may be reproduced without the prior permission of Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of
5、 sale for German Standards (DIN-Normen). Ref. No. DIN EN 1 O1 1-3 : 2001 -0 English price group 12 Sales No. 11 12 06.01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1011-3 September 2000 ICs 25.160.10 English version Welding Part 3: Arc welding of stainless steels Recommendations for weldin
6、g of metallic materials Soudage - Recommandations pour le soudage des matriaux mtalliques - Partie 3: Soudage larc des aciers inoxydables nichtrostenden Sthlen Schweien - Empfehlungen zum Schweien metallischer Werkstoffe - Teil 3: Lichtbogenschweien von This European Standard was approved by CEN on
7、2000-08-1 3. CEN members are bound to comply with the CENKENELEC 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 stand- ards may be
8、 obtained on application to the Central Secretariat or to any CEN member. The European Standards 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
9、Secretariat has the same status as the official versions. CEN members are the national standards 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 Unit
10、ed Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 2000. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN
11、 101 1-3 : 2000 E Page 2 EN 1 O1 1-3 : 2000 Contents Foreword I nt roduction 1 2 3 4 5 6 7 8 9 10 Scope Normative references Terms and definitions Parent metal Storage and handling Welding consumables Fabrication Quality requirements of welds Distortion Post-weld cleaning Annex A (informative) Weldi
12、ng of austenitic stainless steels Annex B (informative) Welding of ferritic stainless steels Annex C (informative) Welding of austenitic-ferritic stainless steels Page 3 4 4 4 5 6 6 6 7 9 9 10 11 18 22 Annex D (informative) Welding of martensitic and mariensitic-austenitic stainless steels 27 Annex
13、ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 30 Page 3 EN 1 O1 1-3 : 2000 Foreword This European Standard has been prepared by Technical Committee CENTTC 121 “Welding“, the secretariat of which is held by DS. This European
14、Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2001, and conflicting national standards shall be withdrawn at the latest by March 2001. This European Standard has been prepared under a mandate given to C
15、EN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive), see informative Annex ZA, which is an integral part of this standard. According to the CENKENELEC Internal Regulations, the national sta
16、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This Euro
17、pean Standard is composed of the following parts: Part 1 : General guidance for arc welding Part 2: Arc welding of ferritic steels Part 3: Arc welding of stainless steels Part 4: Arc welding of aluminium and aluminium alloys Annexes A, B, C and D are informative. Page 4 EN 1 O1 1-3 : 2000 Introducti
18、on This European Standard is being issued with several annexes in order that it may be extended to cover the different types of steel which will be produced to all the European steel standards for stainless steels. When this standard is referenced for contractual purposes, the ordering authority sho
19、uld state the need for compliance with the standard and such other annexes as are appropriate. This standard gives general guidance for the satisfactory production and control of welding and details the possible detrimental phenomena which may occur with advice on methods by which they may be avoide
20、d. It is generally applicable to all stainless steels and is appropriate regardless of the type of fabrication involved, although the application standard may have additional requirements. Permissible design stresses in welds, methods of testing and acceptance levels are not included because they de
21、pend on the service conditions of the fabrication. These details should be obtained from the design specification. This Part of this European Standard contains additional details for fusion welding of stainless steels and should be read in conjunction with the general recommendations in EN 1011-1. 1
22、 Scope This European Standard gives general recommendations for the fusion welding of stainless steels. Specific details relevant to austenitic, austenitic-ferritic, ferritic and martensitic stainless steels are given in annexes A to D. 2 Normative references This European Standard incorporates by d
23、ated and 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 Standa
24、rd only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 288-2 Specification and approval of welding procedures for metallic materials - Part 2: Welding procedure specification for arc weldin
25、g EN 439 Welding consumables - Shielding gases for arc welding and cutting Page 5 EN 1 O1 1-3 : 2000 EN 1600 EN 1011-1 EN 10088-1 EN 12072 EN 12073 EN 25817 EN 29692 Welding consumables - Covered electrodes for manual metal arc welding of stainless and heat resisting steels - Classification Welding
26、 Recommendations for welding of metallic materials - Part 1 : General guidance for arc welding Stainless steels - Part 1 : List of stainless steels Welding consumables - Wire electrodes, wires and rods for arc welding of stainless and heat resisting steels - Classification Welding consumables - Tub
27、ular cored electrodes for metal arc welding with or without a gas shield of stainless and heat resisting steels - Classification Arc-welded joints in steel - Guidance on quality levels for imperfections (IS0 581 7 : 1992) Metal-arc welding with covered electrode, gas-shielded metal-arc welding and g
28、as welding - Joint preparations for steel (IS0 9692 : 1992) EN IS0 8249 Welding - Determination of Ferrite Number (FN) in austenic and duplex ferritic-austenitic Cr-Ni stainless steel welds metals (IS0 8249:2000) CR IS0 15608 Welding - Guidelines for a metallic material grouping system (iSO/TR 15608
29、 : 2000) 3 Terms and definitions For the purposes of this European Standard the following terms and definitions apply. 3.1 passive layer a thin, transparent and tightly adherent film on the suiface of stainless steels which protects them from corrosive attack. 3.2 stabilizedlunstabilized stabilized
30、steels contain additions of strong carbidehitride forming elements, (usually titanium or niobium), which limit the formation of chromium carbideshitrides, allowing the stainless steel to retain its corrosion resistance, particularly around grain boundaries. 3.3 ferrite number (FN) a number indicatin
31、g magnetic attraction, relative to a series of reference samples and therefore, proportional to the ferro-magnetic phase content, approximately equal to ferrite (delta ferrite) content over the range O Yo to 1 O Oh but more readily measured EN IS0 82491. Page 6 EN 1 O1 1-3 : 2000 3.4 consumable inse
32、rt a length of filler metal which is manufactured to conform with the shape and dimensions of the weld preparation and is melted to become an integral part of the joint during welding. 3.5 proof strength where proof strength is referred to in this standard it refers to 0,2 o/o proof strength ( p0,2
33、Yo . 4 Parent metal This standard applies to stainless steels of the austenitic, ferritic, martensitic and austenitic/ferritic types, according to groups 8 to 10 of CR IS0 15608. 5 Storage and handling When storing, handling or fabricating stainless steel, the environment shall be controlled to avoi
34、d permanent breakdown of the passive layer, which gives stainless steel its good corrosion resistance. Stainless steels shall be protected from contamination and surface damage during all stages of storage, fabrication and transportation. Contact between stainless steels and other materials, e.g. ca
35、rbon steels, copper, paints, dyes and tapes, which cause a breakdown of the passive layer or other detrimental effects should be avoided. When contact is not avoidable care should be taken that all residues are removed. Racking for stainless steels shall be strongly built and shall be lined in a sec
36、ure manner with materials that will not contaminate stainless steel, e.g. dry wood or stainless steel. Unlined or painted carbon steel racking shall not be used. Lifting grabs shall be made from or lined with a non-contaminating material. Welding fixtures, earth clamps or manipulators shall be eithe
37、r manufactured from or lined with non-contaminating materials. 6 Welding consumables Filler materials should be selected having regard to the parent metals and the particular application and shall comply with the relevant standards. Where consumable inserts are used they shall correspond with the re
38、levant filler metal com posit ion. Page 7 EN 1 O1 1-3 : 2000 7 Fabrication 7.1 General Facilities for fabrication of stainless steels shall be segregated from other works and kept free of all possible contaminating materials such as lead, zinc, copper, copper alloys or carbon steels, etc. Forming to
39、ols shall be cleaned thoroughly before use to avoid cross contamination. All lubricants used in the forming operations shall be removed from the workpiece. Only tools dedicated to stainless steel shall be employed; this particularly applies to grinding wheels and wire brushes. Welding heats up the p
40、arent metal which causes formation of oxide films both on the weld metal and on the surrounding areas of the weld. These oxides as well as slags produced by covered electrodes, flux cored wires and submerged arc welding, shall be removed if the weld is to be exposed to a corrosive medium or for othe
41、r reasons (see clause 10). When preparing fusion faces, oxidation, hardening and general contamination from thermal cutting processes should be eliminated by mechanically machining to a sufficient depth from the cut face. During shearing cracking can occur. These may also require to be removed prior
42、 to welding. Where cut edges do not form fusion faces, care should be taken to ensure that the shearing or thermal cutting does not adversely affect the performance of the fabrication. Hard stamping should be avoided, but when it has to be used attention is drawn to the danger of it being applied in
43、 highly stressed or corrosive areas and the purchaser should give guidance as to the location of such marks. Indentations used for marking in radiographic examination should be subject to similar precautions. Welds which are to be inspected and approved should not be painted or otherwise treated unt
44、il they have been accepted. 7.2 Weld details Welding details shall be described in an appropriate Welding Procedure Specification (WPS) in accordance with EN 288-2. Further details of weldability aspects are given in annexes A to D. Acceptance criteria for misalignment of joints are given in EN 2581
45、7. For certain applications (for example the welding of pipework) and welding processes, closer tolerances may be necessary. Where run-on/run off pieces are used these shall be manufactured from a grade of stainless steel compatible with that used for the fabrication and shall have a thickness and e
46、dge preparation similar to that used for the joint. Page 8 EN 1 O1 1-3 : 2000 The removal of run-on/run off pieces shall be performed by a method which does not adversely affect the properties of the parent metal and weld deposit. Inspection should be carried out to demonstrate that both the parent
47、material and weld deposit are free from unacceptable imperfections. Where the weld has to be made from one side only, it may be necessary to protect the root side from atmospheric contamination to maintain the corrosion resistance of the joint. The root run of such welds is generally made using the
48、TIG or plasma welding process. 7.3 Weld backing Permanent backing shall consist of a compatible grade of stainless steel and should not be used where there is a risk of crevice corrosion. When it is not appropriate to use pari of the structure as backing material, the material to be used shall be as
49、 required by the design specification. When using copper as a temporary backing material a groove shall be machined into the backing material in the fusion area. Care should be taken when welding as there is a risk of copper pick-up. This can be reduced by nickel or chromium plating of the copper backing material. When using high heat input, the copper backing may be water-cooled. Backing material shall be free from contamination such as grease, moisture, oxide etc. Where temporary or permanent backing is employed, the joint shall be arranged in such a way as to ensu
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