Embed Size px x x x x It includes Questions with short Answers, multiple choice and true or false exercise Questions. The clause reference for the correct Answer is shown in brackets followed by the Answer. Clause 12 deals with provisions that are specific to cyclically loaded structures only, and Clause 11 deals with provisions specific to statically loaded structures only. What is a low-hydrogen electrode?
Running the Weld Test Centre here for the past 6 years, we have heard every excuse in the book for why a weld fails and I am considering a blog post listing the most interesting reasons we get. Many welders want to see their weld and understand why it has failed. Respecting that this is their livelihood we want to help them understand the failures that occur after many of the same questions, one of the women in the office set out to do some research. She has found some great information on some of the most common weld defects.
CSA W59 is the code that governs welded steel construction in Canada. Pre-qualified welds are common welds that have a long history of low failure rate when done properly , and therefore get special rules regarding what documentation and testing is required. W59 sets out to define these pre-qualified welds and the parameters they are governed by.
Visit weldingindustryjobs. A weld backing bar is used at the root of a welded joint to support the molten weld metal and thus facilitating the achievement of a complete joint penetration weld. In some instances, we are required to remove the backing bar and in others we are not. The backing bar can be considered undesirable and is removed for a variety of reasons including:. The fatigue life of a structural or mechanical component subjected to cyclic loading is reduced by any discontinuity in its geometry.