A kind of metal equal volume continuous repeated shear forming method and device

Abstract

The invention discloses an isometric, continuous and repeated shearing type metal forming method and device. The device comprises a slide plate, an upper rotating plate, a lower rotating plate, a top plate, a connecting block, an opening-closing plate, a fixed plate, a bottom plate, a base, a heating device, a distance bolt, a connecting rod and a fork rod, wherein the upper rotating plate and the lower rotating plate are correspondingly hinged with the bottom plate and the top plate; the slide plate slides in guide chutes of the opening-closing plate and the fixed plate; the opening-closing plate is connected with the fixed plate; the connecting block is welded on the slide plate; the connecting rod passes through the connecting block and the fork rod; the fork rod is connected with a press, and the press is able to drive the slide plate to move up and down through the fork rod and the connecting rod so as to realize the rotating of the upper rotating plate and the lower rotating plate; parallelepiped-shaped mold cavities composed of the slide plate, the upper rotating plate, the lower rotating plate, the opening-closing plate, the fixed plate and the bottom plate remain unchanged in size, and the shape continuously changes, thus realizing the isometric, continuous, repeated and uniform shearing deforming of a metal blank. The method and the device are convenient to operate, low in cost and high in efficiency.

Description

Technical field [0001] The invention belongs to the technical field of material processing, and relates to a method and device for continuous repeated shearing and forming of a metal equal volume. Background technique [0002] Severe Plastic Deformation (SPD) technology is to make the material pass through one or more repeated plastic deformations under the condition of lower temperature and higher pressure, so that it can obtain a considerable cumulative strain and make the material The grain refinement improves the comprehensive mechanical properties of the material. At present, the main SPD technologies include: equal channel extrusion, reciprocating extrusion, high-pressure torsion, cumulative rolling, cyclic closed die forging, etc. The C-shaped, L-shaped, S-shaped, and U-shaped reciprocating extrusions proposed in China for preparing ultrafine-grained materials are actually a kind of equal channel extrusion, and the billet has uneven plastic deformation after extrusion. P...

AI Technical Summary

Problems solved by technology

CN104511493A proposes that the die and method of shearing and deforming blanks need to constantly replace punches, and the efficiency is not high

In short, the currently proposed equal-diameter angular extrusion production is discontinuous, low in efficiency, and difficult to produce wide sheets; the equipment for high-pressure torsion, cumulative stack rolling, and cycle closed-die forging is complicated or difficult to operate; reciprocating extrusion forming billets are many It is difficult to form block blanks with round blanks or axisymmetric materials

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