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U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material

A technology of repeated extrusion and ultra-fine grain, applied in the field of material processing, can solve the problems of small upsetting and small deformation, and achieve the effects of wide application, easy processing and convenient operation

Inactive Publication Date: 2005-12-21
HAIMEN HUHAI NONFERROUS CASTING
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this technology is that it integrates extrusion and upsetting. Since materials with poor plasticity are prone to cracking during upsetting, the amount of upsetting cannot be large, and the amount of deformation per pass is small. It is only suitable for the preparation of easily deformed materials. Metal, now rare for industrial applications

Method used

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  • U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material
  • U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material

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Embodiment Construction

[0010] like figure 1 And shown in Fig. 2, the present invention comprises: extrusion bar 1, handle 2, right die cavity 3, left die cavity 4, arc die 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 die cavity 4, the right die cavity 3 and the arc-shaped die cavity 5 are arranged on the parting surface. 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 rotating device can freely e...

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Abstract

This invention relates to a method of manufacture supper slim crystal U shape passage repeat extrusion machine which belongs to the material field. The invention include: extrusion pole, gripe, right model cavity, left model cavity, arc shape model cavity, bolt, fillister. The fillister symmetry divided two part from center line, there are right model cavity, left model cavity, arc shape model cavity in the divided shape, left model cavity connect with right model cavity by arc shape model cavity, left and right model cavity have equal cross section acreage, same shape, center line parallel each other, the shape is square or rotundity. The arc shape model cavity has the same cross section acreage, same shape with left and right model cavity. The two parts fillister make up U shape extrusion equal section by bolt, extrusion pole is on the extrusion equal section passage, there is not gripe in the fillister. The invention has the simple frame, strong capacity of fine crystal, realize series work, it has prominent application of industry.

Description

technical field [0001] The invention relates to a device in the field of material processing, in particular to a U-shaped equal-channel repeated extrusion device for preparing ultrafine-grained materials. Background technique [0002] Ultrafine-grained materials are high-performance structural materials that combine excellent strength and good plasticity and toughness. Driven by the demands of national economic pillar industries such as aerospace, transportation, residential construction, machinery and electronics, and national defense and military industry, the demand for high-performance structural materials such as high specific strength and high specific stiffness is increasing. One of the important methods to prepare high-performance structural materials such as high specific strength and high specific stiffness. Traditional pressure processing technology can refine the structure, eliminate casting defects, and obtain better mechanical properties than as-cast products ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02
CPCB21C23/001
Inventor 陈勇军王渠东
Owner HAIMEN HUHAI NONFERROUS CASTING
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