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Equal channel angular extruding, twisting and deforming mold for large plastic forming process

A technology of equal-diameter angle extrusion and twisting and forming process, applied in the direction of metal extrusion dies, etc., can solve the problems of uneven deformation and small amount of deformation in a single pass, so as to improve the uniformity of deformation, improve material properties, and improve the yield of finished products. Effect

Inactive Publication Date: 2012-06-27
HEFEI UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But both have the problem of small deformation in a single pass and uneven deformation

Method used

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  • Equal channel angular extruding, twisting and deforming mold for large plastic forming process
  • Equal channel angular extruding, twisting and deforming mold for large plastic forming process
  • Equal channel angular extruding, twisting and deforming mold for large plastic forming process

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Embodiment Construction

[0029] see figure 1 , figure 2 , torsion deformation mold, is provided with punch 7 and die, die is made up of die one 4 and die two 5, and die one 4 and die two 5 are two semi-cylindrical mating with channel grooves , connected as a whole by bolts, an inlet channel 9 and an outlet channel 10 communicating with the corner of the inlet channel 9 are arranged in the die, the inlet channel 9 and the outlet channel 10 have the same cross section, the punch 7 and the inlet channel 9 With loose fit, a spiral channel 11 with the same cross-section as the outlet channel 10 is provided in the outlet channel 10 . The mold is also provided with a fixed cylinder 3 for loading into the die, the fixed cylinder 3 is a circular cylinder structure, the bottom of which is fixedly connected to the lower formwork base 1, and the lower formwork base 1 is fixedly connected to the lower workbench of the press by bolts; The die pressing plate 6 is arranged above the fixing cylinder, the die pressi...

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Abstract

An equal channel angular extruding, twisting and deforming mold for large plastic forming process is disclosed. The mold is provided with a male mold (7) and a female mold, an inlet channel (8) and an outlet channel (9) communicated with a corner of the inlet channel (8) are arranged in the female mold; the inlet channel (8) and the outlet channel (9) have the same cross section; the male mold (7) and the inlet channel (8) are in clearance fit, wherein a section of spiral channel (10) composed of spiral slots and having the same cross section with the outlet channel (9) is arranged in the outlet channel (9). In the technical process of the invention, the corner formed by the inlet channel and the outlet channel provides strong shearing function for deformation, the spiral channel provides a large shearing deformation amount while increasing the inner hydrostatic pressure during the deformation of a workpiece, so that the effective strain is accumulated, the deformation evenness, and the room temperature strength and comprehensive mechanical property of deformed metal material are improved, the high-performance metal material is obtained, the processing cost of metal materials is reduced, and the yield is improved.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to an Equal Channel Angular Pressing and Torsion (ECAPT) tool for preparing high-performance metal materials. Background technique [0002] Equal Channel Angular Pressing (ECAP for short) and Twist Extrusion (TE for short) are used to prepare high-performance metal materials by large plastic deformation. When preparing high-performance metal materials by the equal-diameter angular extrusion process, since the cross-sectional shape of the sample does not change basically before and after extrusion, it can be repeatedly extruded under the condition that the machinability of the material is allowed, so that the accumulation of the material can be greatly improved. Large plastic deformation, which effectively refines the grains. When preparing high-performance metal materials by extrusion and twisting, the workpiece passes through a spiral channel with a rectangular cross section (n...

Claims

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Application Information

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IPC IPC(8): B21C25/02
Inventor 李萍薛克敏吴战立王晓溪
Owner HEFEI UNIV OF TECH
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