| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: in compliance with proposed method, pipes to be welded together are arranged so that their end faces form a circular gap. Clamp is revolved over the end faces of pipes and heat pressure is applied to fixed pipes to eliminate aforesaid gap. Upset-forging the pipes together allows an interference fit joint. ^ EFFECT: higher strength of welded joint. ^ 2 cl, 2 dwg, 1 ex |
