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[CN 201910887897.7] Hydraulic press and forming method for metal powder sintering and in-situ cumulative extrusion forming in vacuum environment or atmosphere protection


[CN 201910887897.7] Hydraulic Press and Forming Method for Metal Powder Sintering and In-situ Cumulative Extrusion Forming in Vacuum Environment or Atmosphere Protection Title: Hydraulic Press and Forming Method for Metal Powder Sintering and In-situ Cumulative Extrusion Forming in Vacuum Environment or Atmosphere Protection Application Number: CN 201910887897.7 Applicant: Yanshan University Application Date: 2019-9-19 Patent Type: the present invention provides a hydraulic press for metal powder sintering and in situ accumulation extrusion forming under vacuum environment or atmosphere protection, which mainly includes the body structure of the hydraulic press and the furnace body. The body structure is three beams and four columns, and the middle beam is a fixed beam and connected with the lower beam. The furnace body is composed of a fixed furnace cavity and a furnace door. The fixed furnace cavity is fixed on the middle beam. The upper and lower punches respectively pass through the furnace body and are connected with their respective pistons to ensure coaxial coordination. The loading and return are controlled by the corresponding hydraulic system. The furnace door and the movable worktable are integrated, and can be moved out and in on the guide rail on the middle beam under the action of the worktable moving out hydraulic cylinder, the combined female die for sintering and cumulative repeated extrusion is fixed on a movable table. The invention is convenient to operate, carried out in a protective atmosphere, integrates metal powder sintering and multi-pass cumulative repeated extrusion forming process, and avoids the traditional process powder sintering and subsequent large plastic deformation multiple heating and cooling.