Method of shaping a semi-finished product on a hydraulic press, in particular for producing an aerospace fastener

摘要

The design of the semi-finished plant in the hydraulic press, in particular for the manufacture of air anchorages, consists of the mounting on the hydraulic press of 3000 kN of the upper (1) and lower (3) tools with working patterns in the middle (1a and 3a) and heating with the use of gas burners up to 250oC temperature, then the input material (2a) in the form of a moulded pre-nozzle cast in sand form with less plastic aluminium alloys of the aluminium-copper group is heated in the furnace at temperatures 460-500-C, advantageous 480-C, up to fifty minutes,then the recorded input material (2a) shall be placed in the workpiece (3a) of the lower gear (3),then the hydraulic press is applied to the top tool (1) having two equal non-porous holes leading through two equal driving wheels (10) on the bottom tool (3) and the top tool (1) is applied to the positiondownwards with speed to 10 mm/s in the direction of the lower tool (3) and the base material (2a) is crushed with the working section (1a) of the upper tool (1) and the working section (3a) of the lower tool (3) and the semi-finished product (2b) is formed with a greater degree of twisting.