ISO specifies the requirements for the specification and qualification of welding procedures for the friction stir welding (FSW) of aluminium. In ISO. ISO/CD Friction stir welding — Aluminium — Part 1: Vocabulary. General information. Status: Under development. Edition: 2. Technical Committee.: IIW. ISO specifies design requirements for friction stir weld joints. In ISO , the term “aluminium” refers to aluminium and its alloys.
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Effect of Friction Sti The finite element sim An outsider looks at f Iao of joint in Quality and inspection requirements Soudage par friction-malaxage — Aluminium — Partie 5: ISO All rights reserved.
Unless otherwise specified, no part of this publication may be reproduced or utilized in any form 2239 by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s member body in the country of the requester. ISO copyright office Case postale 56? CH Geneva 20 Tel. Inspection and testing personnel Friction stir welding tool Preweld joint preparation and fit-up Preheating and interpass temperature control Annex A normative Imperfections, testing and examination, acceptance levels, and ISO reference number The work of preparing International Standards is normally carried out through ISO technical committees.
Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Attention is drawn to the possibility that some of the ido of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by the International Institute of Welding, which has been approved as an international standardizing body in the field of welding by the ISO Council. ISO consists of the following parts, under the general title Friction stir welding — Aluminium: Design of weld joints?
Qualification of welding operators? Specification and qualification of welding procedures? Quality and inspection ios Requests for official interpretations of any aspect of this part of ISO should be directed to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response.
During the second half of the twentieth century, fusion welding processes, wherein fusion is obtained by the melting of parent material and usually a filler metal, dominated the welding of large structures. The increasing use of Isoo has created the need for this International Standard in order to ensure that welding is carried out in the most effective way and that appropriate control is exercised over all aspects of the operation.
This International Standard focuses on the FSW of aluminium because, at the time of publication, the majority of commercial applications for FSW involved aluminium. Examples include railway carriages, consumer products, food processing equipment, aerospace structures, and marine vessels. The parts of this International Standard are listed in the foreword. Part 1 defines terms specific to FSW. Part 2 specifies design requirements for friction stir weld joints in aluminium.
Part 3 specifies requirements for the qualification of an operator for 255239 FSW of aluminium. Part 4 specifies requirements for the specification and qualification of welding procedures for the FSW of aluminium. A welding procedure specification WPS is needed to provide a basis for planning welding operations and for quality control during welding.
TWI Intermediate Award in Friction Stir Welding
Welding is considered a special process in the terminology of standards for quality systems. Standards for quality systems usually require that special processes be carried out kso accordance with written procedure specifications. Metallurgical deviations constitute a special problem.
Because non-destructive testing of the mechanical properties is impossible at the present level of technology, this has resulted in the establishment of a set of rules for qualification of the welding procedure prior to the release of the WPS to actual production. ISO defines these rules. Part oso specifies a method for determining the capability of a manufacturer to use the FSW process for the production of aluminium products of the specified quality.
It defines specific quality requirements but does not assign those requirements to any specific product group. To be effective, welded structures should be free from serious problems in production and in service. To achieve that goal, it is necessary to provide controls from the design phase through material selection, fabrication, and inspection. For example, poor design can create serious and costly difficulties in the workshop, on site, or in service.
Incorrect material selection can result in welding problems, such as cracking. Welding procedures have to be correctly formulated and qualified to avoid imperfections. To ensure the fabrication of a quality product, management should understand the sources of potential trouble and introduce appropriate quality and inspection procedures. Supervision should be implemented to ensure that the specified quality is achieved.
Quality and inspection requirements 1 Scope This part of ISO specifies a method for determining the capability of a manufacturer to use the friction stir welding FSW process for the production of products of the specified quality. It specifies quality requirements, but does not assign those requirements to any specific product group. This part of ISO does not apply to friction stir spot welding. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document including any amendments applies.
Hardness test on arc welded joints ISODestructive tests on welds in metallic materials — Hardness testing — Part 2: Vocabulary 1 To be published. Revision of ISO Qualification of welding operators ISO Specification and qualification of welding procedures 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO apply. Qualification records shall be kept up to date.
EVS-EN ISO 25239-1:2011
When the use of an examination method not currently incorporated in ISO or ISO is specified, the manufacturer shall be responsible for developing the training programme, written practice, examination, and practical demonstrations equivalent to the requirements of ISO or ISO These shall establish the capability of the personnel performing the required examination.
Welding equipment shall be maintained in good condition and shall be repaired or adjusted when a welding operator, inspector or welding coordinator is concerned about the capability of the equipment to operate satisfactorily. Such tests shall verify the equipment functions correctly. Reproducibility tests shall be carried out when any of the following occurs: The reproducibility test shall be performed in accordance with a WPS that is used in production for that machine.
A minimum of three test welds shall be made and found satisfactory. The plan shall ensure that maintenance checks are performed on the equipment that controls variables listed in the relevant WPSs.
The maintenance plan may be limited to those items that are essential for producing welds that meet the quality requirements of this part of ISO Examples of these items are as follows: Before welding, clamps, jigs, and fixtures that contact the workpieces shall be clean and sufficiently free of contaminants e. Defective equipment shall not be used.
The correct tool geometry is critical for producing a quality friction stir weld. Because the FSW tool wears with use, it shall be inspected for iwo at appropriate intervals and in accordance with a written procedure.
The root gap shall be set in accordance with the WPS. Parent material shall be sufficiently free of surface oxides, protective finishes, adhesives, oils, grease, dirt, and any other contaminants that could have a detrimental effect on weld quality. The manufacturer shall be fully responsible for the specification and performance of any postweld heat treatment e. The procedure shall be compatible with the parent material, welded joint, and weldment, in accordance with the product standard or specified requirements.
A record of the heat treatment shall be made during the heat-treating process. The record shall demonstrate that this part of ISO has been followed and shall be traceable to the jso part.
Ultrasonic ido may be used instead of radiographic testing when specified by the design specification or by relevant requirements.
When radiographic testing of lap joints or partial-penetration butt welds is required, the design specification shall determine the acceptance levels. When immersion ultrasonic examination or phased-array ultrasonic examination is used, the design specification or relevant requirements shall determine the applicable standard s or requirements. When one or more of these other testing methods is indicated, then they shall be carried out in accordance with the relevant International Standard.
Repair shall bring the weld into oso conformity with the requirements of this specification. This operation shall be carried out in such a manner that the thickness of the weld and parent material remain within tolerance.
Testing and examination of other imperfections and their acceptance levels shall be in accordance with the relevant requirements or the design specification. Acceptance levels shall be within the specified limit of the relevant requirements or the design specification.
Metal welding processes ISOQuality requirements for fusion welding of metallic materials — Part 2: Comprehensive quality requirements ISOWelding and allied processes ios Classification of geometric imperfections in metallic materials — Part 1: ISO — All rights reserved.