Search anything about welding with images in this website.
Projection Welding Copper Electrode. Refractory electrode materials such as tungstencopper tungsten or molybdenum are used for applications such as projection welding inserts where the electrode contact area is at least three times the weld size. The 70 value in a resistance welding standardspecification is typically associated with the projection welding of coinedforgedsolid weld nuts.
Schmidt has the projection-welding caps and electrodes for your system whether youre looking for standard shapes and sizes or custom pieces for special applications. Stud welding electrodes and backup electrodes are available for stud 6mm to 12mm. In projection welding copper electrodes are used as copper is a very good conductor of heat and electricity.
When the projection is totally collapsed further growth of a weld nugget will be impossible since the large surface of the copper electrodes will diffuse current density when the electrodes make full contact to the work piece.
Equipment used for projection welding is similar to that used for spot welding except that the rod electrodes are replaced by flat copper platens or dies as shown in Fig. Ad Find China Manufacturers Of Welding Electrode. Local melting occurs at the faying surfaces and an internal weld nugget is formed. Especially Capheads are available with tungsten copper faced to give more life to electrodes.
