By J. Hicks (Auth.)
A realistic 'how to do it' ebook written with the layout and welding interface in brain. It informs designers not just of what they need to learn about welding but in addition, and most significantly, units out the knowledge the fashion designer should still supply to the welding engineer or fabrication superintendent in order that the designer's goals should be completed, by way of engineering functionality, security, reliability, price and visual appeal
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Additional info for A Guide to Designing Welds
Perhaps the most obvious situation where the preparations need not be detailed on the drawing is where parts are cut and welded in the same shop. In some industries, civil engineering for example, the design engineer's drawings show only the type of weld required at any joint, and for fillet and partial penetration butt welds, the size: the fabricator's draughtsman puts the details of the welds on the shop drawings including weld preparations if necessary. 35). An essential is that joints be accessible to the welder or welding machine.
Use of the method therefore has to be taken into account at the design stage. Ultrasonics — a beam of high frequency sound is transmitted into the material from a probe which is also able to detect any reflections of the beam from the opposite surface or from internal discontinuities such as weld defects. Progress of the beam is displayed on a cathode ray tube giving trained and experienced operators information from which, with a knowledge of the original weld preparation, they can indicate the position of the defect and its size.
There are a few basic configurations which cannot be satisfactorily welded by conventional manual or mechanised welding processes. 36, together with methods by which the difficulties can be overcome. There are configurations where although a welding rod or gun can be directed at the joint, the angle between the parts is so small that the tip of the rod or wire is insufficiently close to the joint line to allow properfusion into the root of the joint. 37) is related to weld preparation which is dealt with in Chapter 4.
A Guide to Designing Welds by J. Hicks (Auth.)