کتاب Post Weld Heat Treatment Of Welded Structures
Post Weld Heat Treatment Of Welded Structures
زبان نوشتار:
انگلیسی
سال انتشار:
February ۲۰۰۳
معرفی کتاب Post Weld Heat Treatment Of Welded Structures
During the fabrication process, welding is the most commonly used method of joining items together. The welding process generally involves melting and subsequent cooling, and the result of this thermal cycle is distortion if the welded item is free to move, or residual stress if the item is securely held. There comes a point when the amount of residual stress can create potential problems, either immediately or during the life of the welded structure, and it needs to be reduced or removed. Post weld heat treatment is the most widely used form of stress relieving on completion of fabrication of welded structures. The principle is that as the temperature is raised, the yield stress and the elastic modulus of the material fall. A point is reached when the yield stress no longer supports the residual stresses and some localised plastic deformation occurs.