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SR EN ISO 17640:2019

Examinări nedistructive ale îmbinărilor sudate. Examinare cu ultrasunete. Tehnici, niveluri de examinare și evaluare

This document specifies techniques for the manual ultrasonic testing of fusion-welded joints in metallic materials of thickness =8 mm which exhibit low ultrasonic attenuation (especially that due to scatter) at object temperatures from 0 °C to 60 °C. It is primarily intended for use on full penetration welded joints where both the welded and parent material are ferritic. Where material-dependent ultrasonic values are specified in this document, they are based on steels having an ultrasonic sound velocity of (5 920 ± 50) m/s for longitudinal waves and (3 255 ± 30) m/s for transverse waves. This document specifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B, and C is given in Annex A. This document specifies that the requirements of testing level D, which is intended for special applications, be in accordance with general requirements. Testing level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetr

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Status : In vigoare
Data aprobării : 28.06.2019
Număr de pagini : 34
ICS : 25.160.40 Materiale de adaos
Comitet tehnic : 39 - Sudare şi procedee conexe

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