公开(公告)号：US3728111A

公开(公告)日：1973-04-17

申请号：US3728111D

申请日：1971-09-21

申请人： ASEA AB

发明人： STROMBLAD I ,  ISAKSSON S

IPC分类号： B22F3/15 ,  B22F1/00

CPC分类号： B22F3/15

摘要： FOR MANUFACTURING BILLETS OUT OF POWDER FOR FURTHER MACHINING BY ROLLING, FORGING OR MCAHINING, POWER IS POURED INTO A CONTAINER HAVING AN EVAUCATING OPENING AND IS THEN ISOSTATICALLY COMPRESSED BY SUBJECTING THE CONTAINER WITH THE ENCLOSED POWER TO A HIGH EXTREME PRESSURE. THE BILLET IS PLACED IN A HEATED FURNACE AND HEATED WHILE IT IS SIMULTANEOUSLY EVACUATED FOR DEGASSING. AFTER EVACUATION IS COMPLETED, THE BILLET IS PREHEATED IN ANOTHER FURNACE TO A TEMPERATURE SUITABLE FOR PRESSURE SINTERING AND THEN IN ANOTHER FURNACE IS SUBJECTED SIMULTANEOUSLY TO HIGH HEAT AND HIGH PRESSURE.

D R A W I N G

公开(公告)号：US3774431A

公开(公告)日：1973-11-27

申请号：US3774431D

申请日：1972-07-10

申请人： ASEA AB

发明人： STROMBLAD I ,  HOGLAND R

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

CPC分类号： C22F1/08 ,  B21C23/002 ,  B21C23/007 ,  B21C29/006 ,  B21C35/02

摘要： 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.

摘要翻译： 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。

公开(公告)号：US3751955A

公开(公告)日：1973-08-14

申请号：US3751955D

申请日：1972-02-16

申请人： ASEA AB

发明人： STROMBLAD I

IPC分类号： B21C25/06 ,  B21C23/00 ,  B21C31/00

CPC分类号： B21C23/007 ,  B21C31/00

摘要： In order to prevent the complete extrusion of a billet during hydrostatic extrusion, the rear end of the billet is treated so that it is harder than the rest of the billet. As a result, when the rear end reaches a die, the resistance to extrusion increases and can be detected so that extrusion can be stopped.