Equal channel angular extrusion device of ultrasonic vibration female die

A technology of equal angular extrusion and ultrasonic vibration, applied in the direction of vibrating fluid, metal extrusion die, etc., can solve the problem that the scale of ultra-fine-grained materials is difficult to reach below 200nm, and the extruded parts are prone to cracks or scratches. Problems such as poor distribution of the plastic deformation zone of the sample structure

Inactive Publication Date: 2015-12-23
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing ECAP mold has three disadvantages: 1) the surface of the prepared extrusion is prone to cracks or scratches; 2) the uniformity of the prepared sample structure and t

Method used

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  • Equal channel angular extrusion device of ultrasonic vibration female die
  • Equal channel angular extrusion device of ultrasonic vibration female die
  • Equal channel angular extrusion device of ultrasonic vibration female die

Examples

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Embodiment Construction

[0025] The technical solution of the present invention will be further described below through examples.

[0026] like figure 1 As shown, the equal angular extrusion device of the ultrasonic vibrating die according to the present invention includes an upper template 1, a cushion block 2, a retaining ring 3, a stress ring 4, an ultrasonic amplifier 5, an ultrasonic transducer 6, a cable 7, Lower template 8, hydraulic plunger 9, punch 10, guide sleeve 11, die 12 and guide post 13. The specific structure and connection relationship are: the upper formwork 1 and the lower formwork 8 make relative movement, the threaded hole at the upper end of the upper formwork 1 is connected with the hydraulic plunger 9 on the hydraulic press, the upper end of the spacer 2 is connected with the upper formwork 1, and the lower end of the spacer 2 Connect with the punch 10, the punch 10 is fixed in the retaining ring 3, the upper end of the retaining ring 3 is fixedly connected with the pad 2, th...

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Abstract

The invention provides an equal channel angular extrusion device of an ultrasonic vibration female die. The equal channel angular extrusion device is composed of an upper template and a lower template. A threaded hole in the upper end of the upper template is connected with a hydraulic plunger on a hydraulic machine. The upper end of a cushion block is connected with the upper template. The lower end of the cushion block is connected with a male die. The male die is fixed in a blocking ring. The upper end of the blocking ring is fixedly connected with the cushion block. The upper end of a guide sleeve is fixedly connected with the upper template. The lower end of the guide sleeve is connected with the upper end of a guide column. The lower end of the guide column is fixedly connected with the lower template. The lower end of the female die is fixed to the lower template. The side face of the female die is fixed through a split stress ring. An ultrasonic vibration device is fixedly connected to the side face of the female die. High-strength ultrasonic waves are input into the female die, high-frequency periodic vibration displacement is generated on the surface of the female die, grain uniformizing and refining of an extrusion piece are improved, and the problems that an equal channel angular extrusion die is nonuniform in grain refining, and cracks exist on the extrusion piece are solved effectively.

Description

technical field [0001] The invention relates to the technical field of metal large plastic deformation, in particular to an equal-diameter angular extrusion device for an ultrasonic vibrating die. Background technique [0002] Ultrafine-grained materials refer to submicron or nanoscale materials with a grain size of 100 nm to 1 um. Ultrafine-grained structure materials often exhibit a series of excellent mechanical properties, such as high strength and good toughness, wear resistance, etc., so they are widely used in aerospace, high-rise buildings, long-span heavy-duty bridges, lightweight energy-saving vehicles, large construction machinery, etc. [0003] Among many refinement methods, severe plastic deformation, as a unique plastic processing method for the purpose of microstructure control, can directly obtain submicrocrystalline and nanocrystalline structures. Equal angular extrusion is currently the most effective severe plastic deformation method for preparing high-p...

Claims

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Application Information

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IPC IPC(8): B21C25/02B06B1/00
CPCB21C25/02B06B1/00B21C23/001B21C23/004
Inventor 郑战光朱帅杨兴冯强黄龙贵
Owner GUANGXI UNIV
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