The production of butt and lap Joints by cold pressure welding Is reviewed; diagrams of techniques using preliminary deformation of the ... In particular the results of ultrasonic welding, and thermal Impulse welding Investigations are presented. ... Friction loading and shear tests were carried out at room temp, and 70 aquot;C on a brake lining bonded to steel, ... The results are given of welding trials carried out on low-Ni steel with anstenitlc [stainless-steel] electrode wire to Improve theanbsp;...