Method of welding cylindrical bodies

摘要

A method for welding using an on/off switching control. The switching control forms a wave cycle with a plurality of peaks. Within a half wave cycle (+E,fra 1/2+EE f) of welding current f, the wave form takes the shape of an inclined straight line A rising to a predetermined current value S1, a pause in the current which causes a straight line B to extend from upper end of line A, a voltage drop as shown by straight line C, which is shown as a straight line from B to a predetermined current drop, a drop pause as shown by straight line D and at least another current rise and current pause extending from straight line D, wherein all the welding periods are of the same time duration so that welding nuggets are evenly formed.