公开(公告)号：US3774431A

公开(公告)日：1973-11-27

申请号：US3774431D

申请日：1972-07-10

Applicant: ASEA AB

Inventor： STROMBLAD I ,  HOGLAND R

IPC: B21C23/00 ,  B21C35/02 ,  C22F1/08 ,  B21C31/00

CPC classification number: C22F1/08 ,  B21C23/002 ,  B21C23/007 ,  B21C29/006 ,  B21C35/02

Abstract: In the manufacture of copper tubes by hydrostatic extrusion, a tubular billet is inserted in an extrusion press and extruded through a gap between a die and a mandrel to form a tube having the desired cross-section by hydrostatic pressure. The tube which is formed is led to a cooling zone at such a distance from the extrusion press that the time between shaping and cooling exceeds the recrystallization time required for annealing copper. The extruded tube is surrounded by an inert gas within a conductor tube during the passage from the press to the cooling zone.

Abstract translation: 在通过静液压挤出制造铜管时，将管状坯料插入挤压机中并通过模具和心轴之间的间隙挤出，以通过静水压力形成具有所需横截面的管。 所形成的管被引导到与挤压机相距一定距离的冷却区，成形和冷却之间的时间超过退火铜所需的再结晶时间。 在从压机到冷却区的通道期间，挤出的管被导体管内的惰性气体包围。