U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material
A technology of repeated extrusion and ultra-fine grains, applied in metal extrusion, metal extrusion dies, manufacturing tools, etc., can solve the problems of not large upsetting amount and small deformation amount, and achieve wide practical application, easy processing, Easy-to-use effects
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[0010] As shown in Fig. 1 and Fig. 2, the present invention includes: extrusion rod 1, handle 2, right mold cavity 3, left mold cavity 4, arc mold cavity 5, bolt 6, die 7. The connection relationship is: the die 7 is symmetrically divided into two halves from the center line, and the left cavity 4, the right cavity 3 and the arc cavity 5 are arranged on the parting surface, and the left and right cavities 4 and 3 are used The arc cavity 5 is connected, the left and right cavity 4, 3 have the same cross-sectional area, the same shape, the center lines are parallel to each other, the shape is square or circular, and the arc cavity 5 has the same cross-sectional area as the left and right cavity 4, 3. Equal and same shape, smooth transition with left and right die cavities 4, 3, two halves of die rely on bolt 6 to combine U-shaped extruded equal-section channel, extrusion rod 1 is above the U-shaped extruded equal-sectional channel, passes through guide rail Or the guide of the r...
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