ISO INTERNATIONAL STANDARD 14270 Second edition 2016-03-01 Resistance welding Destructive testing of welds - Specimen dimensions and procedure for mechanized peel testing resistance spot, seam and embossed projection welds Soudage par résistance - Essais destructifs des soudures Dimensions des éprouvettes et mode opératoire pour I'essai de pelage mécanisé des soudures par résistance par points, a la molette et par bossages Reference number ISO 14270:2016(E) ISO International Organization for Standardization IG INST OF STANDARDIZATION C15956617 @ IS0 2016 ithout license from IHS IS0 14270:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 copyright@iso.org www.iso.org Intenationai br PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIZoISQ s.6 - All rights reserved etworking permitted without license from IHS IS0 14270:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions ..1 4 Test pieces and specimens ..2 5 Preparation of mechanized peel test specimens .5 5.1 General .5 5.2 Bending procedure of weld test specimens after welding .5 5.3 Bending procedure of test specimens before welding Alternative procedure ..5 5.4 Dimensions and accuracy .8 6 Peel testing procedure and test equipment ..9 7 Re-test.. .10 8 Test report ..10 Annex A (normative) Measurement of seam weld size ..12 Annex B (informative) Influence of spot weld position on test results ..13 Annex C (informative) Examples of bending tools .14 Annex D (informative) Determination of the bending centre position with press brake systems...16 Bibliography .17 iii HEJIANG INST OF STANDARDIZATION C1 5956617 lout license from IHS