| 摘要 |
FIELD: automatic welding increased-thickness joints of titanium alloys in inert gas by means of submerged tungsten electrode. ^ SUBSTANCE: method comprises steps of forming in welded edges cutout which is in the form of -shaped dressing of edges at welding parts with slit gap; keeping relation of depth of dressing to its width less than 1; rounding acute angles of dressing; before welding introducing granulated additive material into slit gap and performing first pass at minimally admissible value of shape factor of fusion. In order to provide guaranteed fusion of walls, second and third passes are realized in the same mode. Electrode is placed in such a way that it is shifted relative to butt axis. At double-side welding passes are realized according to next order: first and second passes, then third, fourth and fifth passes. ^ EFFECT: enlarged manufacturing possibilities of method due to increased limit thickness of welded parts. ^ 3 cl, 5 dwg |
