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Multi-corner composite equal channel angular twist extrusion die

A technology of equal-diameter angular extrusion and twisting, applied in the direction of metal extrusion dies, etc., can solve problems such as surface cracks of extrusion parts, increase internal hydrostatic pressure of deformed bodies, etc., and achieve high deformation uniformity, low equipment requirements, and high efficiency The effect of preparation

Inactive Publication Date: 2014-09-03
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional extrusion can effectively increase the hydrostatic pressure inside the deformed body, and the effective length available in the longitudinal direction will be greatly increased after extrusion deformation, but common extrusion surface cracks will appear

Method used

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  • Multi-corner composite equal channel angular twist extrusion die
  • Multi-corner composite equal channel angular twist extrusion die

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Embodiment Construction

[0018] The multi-angle compound equal-diameter angular extrusion die includes a die set 1, a die 2, a punch 3, an entrance channel 4, a spiral channel 5, a bolt 6, an upper template 7, a deformation channel 8, a heating jacket 9, a jack 10, Normal thread nut 11, positive and negative thread screw rod 12, knob 13, lower template 14; in the multi-rotation angle composite equal-diameter angular extrusion die, the die 2 is a tapered body, and its interior is provided with an entrance channel 4, a deformation The channel 8 and the spiral channel 5, the die 2 is embedded in the mold case 1 with matching taper, the outer periphery of the die case 1 is provided with a heating jacket 9, and the heating jacket 9 heats the die 2 and the die case 1 through the power supply, and in the concave The top of the die 2 is matched with a punch 3, and the bottom of the die 2 is provided with a jack 10. The jack 10 is fixed on the lower template 14 by bolts. Press the workpiece into the deformat...

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Abstract

The invention provides a multi-corner composite equal channel angular twist extrusion die. The die is characterized in that a female die is a cone; an inlet channel, a deformation channel and a spiral channel are arranged inside the cone; the female die is embedded in a die sleeve with identical conicity; the periphery of the die sleeve is sleeved with a heating sleeve; a punch is arranged above the female die in a matching manner; a jack is arranged below the female die. The die has the beneficial effects that the die deforms workpieces put into the inlet channel of the die to a great extent, has high deformation uniformity, low equipment requirement and high work efficiency, meets the requirements of different deformed materials and various deformation temperatures, has the semi-automatic ejection function, is easy to manufacture and can be used for efficiently preparing blocky ultra-fine grain materials with large sizes and high performances.

Description

technical field [0001] The invention relates to a compound die, in particular to a multi-rotation compound equal-diameter angular extrusion die for preparing high-efficiency, large-size, high-performance block ultra-fine-grained materials. Background technique [0002] In recent years, ultrafine-grained materials have attracted extensive attention and research because of their excellent mechanical properties and unique physical and chemical properties different from traditional coarse-grained materials. So far, many advanced technologies for preparing ultrafine-grained materials have emerged, such as high-energy ball milling, inert gas condensation in-situ pressurization, deep subcooling direct crystallization, amorphous crystallization, and large plastic deformation. Among them, the large plastic deformation method represented by the equal angular extrusion technology is recognized as the most typical, most effective and most promising ultra-fine-grained material preparatio...

Claims

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Application Information

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IPC IPC(8): B21C25/02
Inventor 王晓溪张翔刘忆何敏杨峰张宁
Owner XUZHOU UNIV OF TECH
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