| 摘要 |
PCT No. PCT/SU82/00001 Sec. 371 Date Sep. 30, 1983 Sec. 102(e) Date Sep. 30, 1983 PCT Filed Feb. 2, 1982 PCT Pub. No. WO83/02576 PCT Pub. Date Aug. 4, 1983.An apparatus for sizing of tubes under the pressure of fluid comprises a split die (2) with a lock mounted on a bed (1) and provided with a horizontally arranged sizing channel (3) corresponding to the shape of a tube (7), a mandrel (6) for setting the tube (7) in the sizing channel (3) coaxially therewith, a means for delivery of fluid into a clearance (10) between the mandrel (6) and the tube (7), packings (19) for sealing the clearance (10) between the mandrel (6) and the tube (7), a hydraulic striker unit (24) for building up the pressure of fluid in the clearance (10), incorporating a working chamber (34) filled with a fluid and a vertically arranged receiver (30) with a barrel (25) wherein slides a striking ram (26) which at the impact builds up the pressure of fluid in the working chamber (34) connected to the sizing channel (3) of the die ( 2) through the medium of an adapter (36) joined to the sizing channel (3) and provided with a piston (37) serving for isolating the fluid filling the working chamber (34) of the hydraulic striker unit (24) from the fluid delivered into the clearance between the mandrel (6) and the tube (7). |
