Torsion type reciprocating extrusion device and process method thereof

A technology of reciprocating extrusion and processing method, applied in metal extrusion forming tools, metal extrusion, metal processing equipment, etc. Convenience and other issues, to achieve the effect of sufficient grain refinement, improved mechanical properties, and lightweight equipment
CN101966536BActive Publication Date: 2012-08-22SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Publication Date
2012-08-22

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Abstract

The invention discloses a torsion type reciprocating extrusion device and a process method thereof, belonging to the technical field of plastic formation. The device comprises a cavity die, a cavity die cover plate and a cavity die fixing plate, wherein the cavity die fixing plate is fixed on a work table, and the cavity die with a variable section spindle structure is arranged between the cavitydie fixing plate and the cavity die cover plate. The process method makes materials generate the compound formation of reciprocating extrusion and torsion shearing so as to prepare ultra-fine grainedmaterials with larger volume and uniform tissue.
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Description

technical field

[0001] The invention relates to a device and method in the technical field of plastic forming, in particular to a twisting reciprocating extrusion device and a processing method for preparing ultrafine-grained materials. Background technique

[0002] The large plastic deformation technology, referred to as SPD, has a remarkable ability to refine grains, and can refine the grain structure of materials to submicron or even nanometer levels. Promising approach. In recent years, large plastic deformation technology has been developed rapidly, mainly including: equal channel angular extrusion ECAE, high pressure torsional HPT, reciprocating extrusion CEC, etc. However, due to the limitation of process conditions, these three deformation methods have their own defects.

[0003] Found through document retrieval to prior art, " MICROBAND FORMATION IN CYCLIC EXTRUSION COMPRESSION OF ALLUMINUM " (reciprocating extrusion) published by M.Richert et al. In the article,...

Claims

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