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Parallel double-channel ECAP-Conform method and device

A dual-channel, extrusion wheel technology, applied in the field of material extrusion, can solve the problems of cumbersome process, low efficiency, uneven extrusion materials, etc., and achieve the effect of solving cumbersome process, good effect and improving production efficiency

Active Publication Date: 2018-07-20
CHONGQING UNIV
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Problems solved by technology

Thus, aiming at the problems existing in the existing ECAP-Conform technology, comprehensively optimizing and improving the existing ECAP-Conform device (Nonferrous Metal Engineering, 2008, 60(4): 18-21), the present invention groundbreakingly proposes a parallel The dual-channel ECAP-Conform method and device solves the problems of uneven extrusion material, cumbersome process and low efficiency in the existing ECAP-Conform technology

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  • Parallel double-channel ECAP-Conform method and device
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  • Parallel double-channel ECAP-Conform method and device

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as Figure 1-Figure 5As shown, the new parallel dual-channel ECAP-Conform device provided by the embodiment of the present invention includes extrusion wheel I2 and extrusion wheel II4, compaction wheel 3, material block 5, extrusion die 6, bolt 10, upper die 11 , Lower mold 12. The lower surface of the upper mold is provided with a downward cavity, the upper surface of the lower mold is provided with an upward cavity, and evenly distributed bolt holes 1 are arranged in the peripheral area of ​​the cavity of the upper mold and the lower mold. Insert extrusion wheel I, extrusion wheel II and compaction wheel wi...

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Abstract

The invention belongs to the technical field of material extrusion, and discloses a parallel double-channel ECAP-Conform method and device. The device comprises bolts, extrusion wheels with rectangular grooves at the edge, compaction wheels, upper dies, lower dies, material blocking blocks, an extrusion die and the like; a strip material or a rod material with a certain length is used as a prefabricated blank material; the under the action of three-surface active friction force generated by the blank material making contact with the rectangular grooves at the edges of the extrusion wheel I andthe extrusion wheel II, the blank material rotates clockwise or anticlockwise through the quarter circle along with the wheel; a material blocking block which protrudes into the rectangular grooves at the edges of the extrusion wheels is used for blocking the blank material; and the blank in the rectangular cavity is forced to rotate through the channel cross angles of the two ECAP under the shearing action, so that the two shearing deformations are completed. According to the method and device, two shearing deformations are completed in a continuous equal-channel cross angle extrusion process, the two shearing deformations mainly act on the two surfaces of the blank correspondingy, the ECAP deformation of the path C is equivalent to the two shearing deformations, the production efficiency is high, and the structure performance of the extruded material is more uniform.

Description

technical field [0001] The invention belongs to the technical field of material extrusion, and in particular relates to a parallel double-channel ECAP-Conform method and device. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: The current technology commonly used in the industry is the continuous equal channel angular extrusion technology (ECAP-Conform technology), which combines the equal channel angular extrusion (ECAP) and the continuous extrusion process (Conform) to achieve continuous preparation of ultra-fine grain material technology. During extrusion, the billet rotates with the wheel under the action of the three-sided active friction force generated by the contact with the rectangular groove on the edge of the extrusion wheel and passes through the channel intersection in the ECAP, and the material is subjected to strong shear deformation at the ECAP channel intersection. According to the characteri...

Claims

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Application Information

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IPC IPC(8): B21C23/00B21C25/00B21C25/02
CPCB21C23/001B21C25/00B21C25/02
Inventor 张志清樊祥泽杨庆波雷林杨谋李旭陈鹏吴洋张飞毛婳
Owner CHONGQING UNIV
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