EN ISO 3690:2012
(Main)Welding and allied processes - Determination of hydrogen content in arc weld metal (ISO 3690:2012)
Welding and allied processes - Determination of hydrogen content in arc weld metal (ISO 3690:2012)
ISO 3690:2011 specifies the sampling and analytical procedure for the determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal arising from the welding of such steels using arc welding processes with filler metal.
The techniques specified in ISO 3690:2011 include collection of diffusible hydrogen via displacement of mercury or collection into a headspace filled with an inert gas such as argon. The amount of hydrogen collected is determined by measuring the displaced volume in the former and by, for example, thermal conductivity in the latter.
The temperature for collection of diffusible hydrogen is controlled to avoid thermal activation of non-diffusible hydrogen.
Schweißen und verwandte Prozesse - Bestimmung des Wasserstoffgehaltes im Lichtbogenschweißgut (ISO 3690:2012)
Diese Internationale Norm legt Anforderungen für das Verfahren der Prüfstückherstellung und der Analyse zur Bestimmung des diffusiblen und residuellen Wasserstoffs im Schweißgut martensitischer, bainitischer und ferritischer Stähle fest, das durch Lichtbogenschweißen mit Schweißzusatz hergestellt wurde.
Bei den in dieser Internationalen Norm beschriebenen Techniken wird diffusibler Wasserstoff zum einen mittels Quecksilberverdrängung, zum anderen in einem mit Inertgas, z. B. Argon, gefüllten Kopfraum auf-gefangen. Im ersten Fall wird die aufgefangene Wasserstoffmenge durch Messung des verdrängten Volumens bestimmt, im zweiten Fall durch Messung der Wärmeleitfähigkeit.
Die Temperatur wird beim Auffangen des diffusiblen Wasserstoffs kontrolliert, um eine thermische Aktivierung nicht diffusiblen Wasserstoffs zu vermeiden.
Darüber hinaus kann die Messung des diffusiblen Wasserstoffs durch Anwendung einer schnellen Methode (kurze Auffangzeit) bei höheren Temperaturen ausgeführt werden.
Soudage et techniques connexes - Détermination de la teneur en hydrogène dans le métal fondu pour le soudage à l'arc (ISO 3690:2012)
L'ISO 3690:2012 spécifie le mode opératoire d'échantillonnage et d'analyse pour la détermination de l'hydrogène diffusible dans le métal fondu en acier martensitique, bainitique et ferritique résultant du soudage de ces aciers avec des procédés de soudage à l'arc avec métal d'apport.
Les techniques spécifiées dans l'ISO 3690:2012 comprennent la collecte de l'hydrogène diffusible par déplacement de mercure ou la collecte dans un espace de tête rempli d'un gaz inerte, tel que l'argon. La quantité d'hydrogène collectée est déterminée en mesurant le volume déplacé pour la première technique et, par exemple, la conductivité thermique pour la seconde.
La température de collecte de l'hydrogène diffusible est régulée afin d'éviter l'activation thermique de l'hydrogène non diffusible.
Varjenje in sorodni postopki - Določevanje vodika v čistih varih pri obločnem varjenju (ISO 3690:2012)
Ta mednarodni standard opisuje, kako se lahko mednarodni standardi, ki obravnavajo ergonomijo fizikalnega okolja, uporabljajo za ljudi s posebnimi potrebami, ki bi bili sicer izključeni iz področja uporabe teh standardov. Pripravljen je v skladu z načeli dostopnega načrtovanja iz vodila ISO/IEC 71 in na podlagi podatkov iz ISO/TR 22411. Standard ni omejen na nobeno posebno okolje, ampak določa splošna načela, ki omogočajo oceno in vrednotenje, pri čemer lahko prispeva k razvoju standardov za posebna okolja. Uporablja se za grajeno okolje ter za druga notranja okolja, okolja v vozilu in zunanja okolja. Prav tako ni omejen na posebne okoljske elemente; vključuje oceno akustičnega okolja, temperaturnega okolja, osvetlitve, kakovosti zraka in drugih okoljskih dejavnikov, za katere se lahko šteje, da vplivajo na zdravje, udobje in delovanje oseb s posebnimi potrebami v posameznem okolju. Uporablja se za vse uporabnike takšnih okolij, za katere se šteje, da imajo posebne potrebe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2012
1DGRPHãþD
SIST EN ISO 3690:2001
9DUMHQMHLQVRURGQLSRVWRSNL'RORþHYDQMHYRGLNDYþLVWLKYDULKSULREORþQHP
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Welding and allied processes - Determination of hydrogen content in arc weld metal (ISO
3690:2012)
Schweißen und verwandte Prozesse - Verfahren zur Bestimmung des
Wasserstoffgehaltes im Lichtbogenschweißgut (ISO 3690:2012)
Soudage et techniques connexes - Détermination de la teneur en hydrogène dans le
soudage à l'arc des métaux (ISO 3690:2012)
Ta slovenski standard je istoveten z: EN ISO 3690:2012
ICS:
25.160.40 Varjeni spoji in vari Welded joints
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 3690
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2012
ICS 25.160.40 Supersedes EN ISO 3690:2000
English Version
Welding and allied processes - Determination of hydrogen
content in arc weld metal (ISO 3690:2012)
Soudage et techniques connexes - Détermination de la Schweißen und verwandte Prozesse - Bestimmen des
teneur en hydrogène dans le métal fondu pour le soudage Wasserstoffgehaltes im Lichtbogenschweißgut (ISO
à l'arc (ISO 3690:2012) 3690:2012)
This European Standard was approved by CEN on 2 March 2012.
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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3690:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 3690:2012) has been prepared by IIW “International Institute of Welding” in
collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN.
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 September 2012, and conflicting national standards shall be
withdrawn at the latest by September 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 3690:2000.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 3690:2012 has been approved by CEN as a EN ISO 3690:2012 without any modification.
INTERNATIONAL ISO
STANDARD 3690
Third edition
2012-03-15
Corrected version
2012-05-01
Welding and allied processes —
Determination of hydrogen content in arc
weld metal
Soudage et techniques connexes — Détermination de la teneur en
hydrogène dans le métal fondu pour le soudage à l'arc
Reference number
ISO 3690:2012(E)
©
ISO 2012
ISO 3690:2012(E)
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or 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
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Published in Switzerland
ii © ISO 2012 – All rights reserved
ISO 3690:2012(E)
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Test procedures . 2
4.1 Production of weld specimens . 2
4.2 Welding procedures for the production of weld specimens . 6
4.3 Measurement of hydrogen in the test weld . 13
4.4 Measurement of total hydrogen content in the weld metal — Rapid methods . 19
4.5 Rounding procedure . 19
Annex A (informative) Recommendations and restrictions in regard to older methods of
measurement using mercury . 20
Annex B (informative) Recommendations and restrictions in regard to older methods of
measurement using glycerin . 21
Annex C (informative) Accuracy and reproducibility . 22
Bibliography . 23
ISO 3690:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). 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. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
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. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements 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 3690 was prepared by the International Institute of Welding, recognized as an international standardizing
body in the field of welding in accordance with Council Resolution 42/1999.
This third edition cancels and replaces the second edition (ISO 3690:2000), which has been technically
revised.
Requests for official interpretations of any aspect of this International Standard should be directed to the ISO
Central Secretariat, who will forward them to the IIW Secretariat for an official response.
This corrected version of ISO 3690:2012 incorporates the following corrections:
a) to comply with ISO quality documentation, references to Commission II and to TC 44/SC 3 have been
removed from paragraph 5 of this foreword;
b) the quality of Figures 1 and 3 has been improved in terms of resolution and presentation.
iv © ISO 2012 – All rights reserved
INTERNATIONAL STANDARD ISO 3690:2012(E)
Welding and allied processes — Determination of hydrogen
content in arc weld metal
1 Scope
This International Standard specifies the sampling and analytical procedure for the determination of diffusible
hydrogen in martensitic, bainitic, and ferritic steel weld metal arising from the welding of such steels using arc
welding processes with filler metal.
The techniques specified in this International Standard include collection of diffusible hydrogen via
displacement of mercury or collection into a headspace filled with an inert gas such as argon. The amount of
hydrogen collected is determined by measuring the displaced volume in the former and by, for example,
thermal conductivity in the latter.
The temperature for collection of diffusible hydrogen is controlled to avoid thermal activation of non-diffusible
hydrogen.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 14175, Welding consumables — Gases and gas mixtures for fusion welding and allied processes
ISO/TR 17671-1, Welding — Recommendations for welding of metallic materials — Part 1: General guidance
for arc welding
ISO 80000-1, Quantities and units — Part 1: General
3 Principle
Filler material is deposited on to a standard test coupon in a manner that ensures control of pertinent variables
to produce a representative specimen for analysis. Subsequent storage and handling of the specimen is
controlled to prevent premature loss of hydrogen. Finally, the specimen is transferred to a gas collection
apparatus (mercury method) or to a suitable vessel filled with an inert gas (thermal conductivity method) and
held for a period of time at a temperature sufficient to quantitatively release the diffusible hydrogen into an
evacuated gas burette or into the inert gas headspace, respectively. The amount of hydrogen collected is
determined by measuring the displaced volume (mercury method) or by thermal conductivity. Finally,
quantification of the mass of deposited metal or volume of fused weld metal enables calculations of diffusible
hydrogen in deposited metal, H , or diffusible hydrogen in fused weld metal, H , to be made.
D F
ISO 3690:2012(E)
4 Test procedures
4.1 Production of weld specimens
4.1.1 Summary
The welding consumable to be tested is used to deposit a single weld bead, which is rapidly quenched and
subsequently stored at 78 °C or lower until analysis. Cleaning and slag removal are performed on the chilled
specimen.
4.1.2 Welding fixture
An example of a suitable welding fixture to provide uniform test pieces for the welding processes specified in
4.2 is shown in Figure 1. It is designed to hold the uniform test pieces securely in alignment during welding
and, in particular, to ensure that unclamping upon completion of welding can be carried out in a single
operation according to the conditions specified in 4.1.4 c). The surface temperature of the fixture shall be
between ambient and 25 °C above ambient at the start of each test weld. The fixture may be water cooled to
decrease the cycle time. The temperature of the cooling water shall be controlled to prevent condensation of
water on the surface of the fixture between test welds.
For all welding processes, the test piece assembly is clamped in the welding fixture using annealed copper foil
as shown in Figure 1. The foil may be annealed repeatedly and quenched in water after each annealing.
Oxide scale after annealing is removed by pickling with dilute nitric acid (10 % by volume) followed by washing
with distilled water and drying.
2 © ISO 2012 – All rights reserved
ISO 3690:2012(E)
Dimensions in millimetres
Key
1 test piece assembly per Figure 2
2 water cooling jacket (if necessary)
3 lever clamp
4 copper foil inserts (1 mm 15 mm min. 300 mm)
A copper
B carbon steel
Figure 1 — Example of a suitable welding fixture and test piece assembly for weld deposits
I
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