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[CN 201910888979.3] Metal powder sintering under atmosphere protection or vacuum and in-situ equal channel extrusion hydraulic press and extrusion method
[CN 201910888979.3] Hydraulic Press and Extrusion Method for Metal Powder Sintering under Atmosphere Protection or Vacuum and In-situ Equal Channel Extrusion Title: Hydraulic Press and Extrusion Method for Metal Powder Sintering under Atmosphere Protection or Vacuum and In-situ Equal Channel Extrusion Application Number: CN 201910888979.3 Applicant: Yanshan University Application Date: 2019-9-19 Patent Type: Invention Application The present invention provides a hydraulic press for metal powder sintering and in-situ Equal Channel Extrusion under Atmosphere Protection or Vacuum, it includes a frame, an upper pressure head, a lateral pressure head, a movable workbench, a furnace body, an atmosphere protection device and a hydraulic system. The atmosphere protection device is connected with the furnace body. The frame is an L-shaped frame mechanism, and the frame includes a U-shaped horizontal Beam, two horizontal columns, the second movable beam, four columns, the upper beam and the first movable beam. The invention has the advantages of simple structure, convenient operation, integration of sintering and equal-channel extrusion forming, atmosphere protection and vacuuming functions. The metal powder of the traditional process needs to be transferred to a press machine after being sintered, cooled and taken out for heat and other channel deformation. The invention can sinter and in-situ equal-channel extrusion forming block materials with fine microstructure and excellent comprehensive performance, it overcomes the shortcomings of cooling and secondary heating between powder sintering and primary equal channel extrusion deformation process in the traditional process, and realizes the effective unity of powder sintering and subsequent cumulative deformation.
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