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a quick guide to welding and weld inspection pdf

 

Foreword by Series Editor Introduction A 10 Minute Guide Chapter 1: Abbreviations, Terminology and Welding Symbols Abbreviations Common terms Joint terminology Weld terminology Drawing rules and weld symbols

Chapter 2: Duties of a Welding Inspector Before welding During welding After welding Repairs

Chapter 3: Analysis of a Fusion Weld Components of a welded joint What makes a good fusion weld? Weld joint: preparation methods Weld joint: shape Residual stress and distortion Minimising stresses and distortion

Chapter 4: Materials and Their Weldability Carbon equivalency Classification of steels Alloying elements Material properties Heat treatment of steels

Chapter 5: Welding Processes Manual metal arc (MMA)/shielded metal arc welding (SMAW) Metal inert gas (MIG)/metal active gas (MAG)/ gas metal arc welding (GMAW) 

This book was written to provide a quick guide to welding
inspection which is easy to read and understand. There are
many books covering all aspects of welding (many of them go
into great detail on the subject) but it is difficult to find books
specifically covering weld inspection requirements. This
book’s subjects are purposely not covered in great detail
because it is assumed that the reader is able to find detailed
books on specific subject areas of particular interest. What
this book will do is give you a basic understanding of the
subject and so help you decide if you need to look further. In
many cases the depth of knowledge required for any
particular welding-related subject will be dependent on
specific industry requirements.

 

In all situations, however,
the welding inspector’s role is to ensure that welds have been
produced and tested in accordance with the correct code
specified procedures and that they are code compliant. Code
compliance in this sense means that the weld meets all the
requirements of the defect acceptance criteria specified within
the code.

 

Inspectors considering training to achieve certified welding
inspector status under certification schemes such as CSWIP
(Certification Scheme for Welding Inspection Personnel) or
PCN (Personal Certification Number) will find the book a
useful pre-course learning aid giving coverage of the ‘body of
knowledge’ they are expected to be familiar with. Nonwelding personnel will find it a useful introduction to the
world of welding inspection.

Some people believe that a
welding inspector must have previous welding experience,
but this is not necessarily true as welding and welding
inspection are two totally different subjects.

 

Welding is
naturally a mainly practical ‘skill of hand’ process and
requires dexterity and good hand-to-eye coordination from
the welder. The inspector does not require this practical skill
but must be able to oversee the welding process, takeaccurate measurements, interpret the requirements of codes and standards, and ensure that completed welds are in
compliance with the relevant code requirements. A good
inspector is one who does not take shortcuts and ensures that
procedures are properly followed.