ISO INTERNATIONAL STANDARD 14918 Secondedition 2018-04 Thermal spraying Qualification testing of thermal sprayers Projection thermique - Qualification des agents en projection thermique Reference number IS0 14918:2018(E) osi Copyright International Organization for Standardization @IS02018 IS0 14918:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland CopyighmationalOrganizaionfrStandardizatio @ IS0 2018 - All rights reserved IS0 14918:2018(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..1 4 Essential requirements for qualification testing .2 4.1 General .2 4.2 Equipment operation .2 4.3 Masking procedure. .2 4.4 Surface preparation .3 4.5 Environmental conditions 3 4.6 Application equipment 3 5 Range of qualification .3 5.1 General. 3 5.2 Thermal spraying processes .3 5.2.1 Grouping of thermal spraying processes 3 5.2.2 Application methods. 3 5.2.3 Spray materials. .3 5.3 Qualification scope .4 5.4 Supervision ..4 5.5 Shapes and dimensions of test pieces. 4 5.6 Test methods. ..4 5.7 Acceptance requirements fortestpieces 4 5.8 Spray consumables for the test 5 6 Examination and testing. 5 6.1 General. 5 6.2 Job knowledge test. 5 6.3 Practical test 5 7 Re-tests 5 7.1 General 7.2 Additional tests .5 8 Period of validity .5 8.1 Initial qualification. ..5 8.2 Prolongation .6 8.2.1 Period .6 8.2.2 Thermal sprayer and production spraying .6 8.2.3 Interruption periods in thermal spray works ..6 8.3 Requirements. 8.4 Scheduling. .6 8.5 Expired or cancelled qualification status ..6 9 Records. 10 Designation Annex A (normative) Job knowledge .1 Annex B (normative) Specific acceptance criteria ..10 Annex C (normative) Minimum tensile adhesive strength and shear load resistance values ..15 Annex D (informative) Example of qualification test certificate for thermal sprayer ..18 CopyightIntematinal OrgISraizAh rights reserved ii