Continuous equal channel angular extrusion combination mould and extrusion method

A technology of equal-diameter angular extrusion and combined dies, which is applied in the field of radial-angle extrusion dies and deformation of radial-angle extrusion, which can solve problems such as complex process, inability to provide back pressure, and not involving the realization of extrusion corners, etc.

Active Publication Date: 2013-12-25
哈尔滨生材新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material stopper and the mold are integrated with high cost and complicated process, and neither of them involves the specific realization of the extrusion corner.
In addition, the preparation method g

Method used

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  • Continuous equal channel angular extrusion combination mould and extrusion method
  • Continuous equal channel angular extrusion combination mould and extrusion method
  • Continuous equal channel angular extrusion combination mould and extrusion method

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Embodiment Construction

[0026] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings. The technical solution of the present invention is not limited to the specific embodiments listed below, but also includes any combination of the specific embodiments.

[0027] combine figure 2 , The composition of the first embodiment of the continuous equal radial angular extrusion combination die of the present invention includes a cavity 6 with a block, an inner die pad 7 , a die 8 , an outer die pad 9 and a fastening device 10 . Inside the cavity 6, an inner mold pad 7, a mold 8, an outer mold pad 9 and a fastening device 10 are sequentially placed. The material blocking block has a slope, and the angle α of the slope is 0°-45° as required. The mold 8 contains a sizing band hole, the length of which is 1 mm to 15 mm, and the sizing band is a circular or square column hole, and the aperture is equal to or slightly smaller than the feeding apert...

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Abstract

The invention provides a continuous equal channel angular extrusion combination mould and an extrusion method. The combination die comprises a cavity (6) with a stock stopping block and a feeding opening, a mould (8) with a sizing strip hole, an inner mould cushion (7), an outer mould cushion (9) and a fastening device (10), wherein the inner mould cushion is located on the inner side of the mould; the outer mould cushion is located on the outer side of the mould; the fastening device is mounted outside the outer mould cushion; the inner mould cushion, the outer mould cushion and the fastening device are provided with inner holes; the feeding opening, the sizing strip hole and the inner holes of the inner mould cushion, the outer mould cushion and the fastening device are concentric; the inner hole of the inner mould cushion is a cone hole; the small-bore end of the cone hole is opposite to the sizing strip hole of the mould; the stock stopping block has a gradient; an angle alpha of the gradient is 0-45 degrees. The continuous equal channel angular extrusion combination mould is simple and practicable, low in cost and easy to maintain, is suitable for various metals, alloys and high polymers and is beneficial to the implementation of equal channel angular extrusion under a condition with different extrusion corners and different back pressures.

Description

technical field [0001] The invention relates to an extrusion die, in particular to a continuous equal-diameter angular extrusion die. The invention also relates to a continuous equal-diameter angular extrusion deformation method. Background technique [0002] Ultrafine-grained materials have excellent mechanical and physical properties due to their unique microstructure, making them one of the hotspots in the field of materials research. Compared with other methods of preparing bulk ultrafine-grained materials, such as evaporation condensation-in-situ cold pressing method, high-energy ball milling method and amorphous crystallization method, equal channel angular pressing (ECAP) not only eliminates The large number of pores and impurities in grinding in the cold-pressed ultrafine-grained samples can be eliminated, and three-dimensional large-sized dense block nanomaterials can be prepared. [0003] Equal angular extrusion based on continuous extrusion technology not only h...

Claims

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Application Information

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IPC IPC(8): B21C25/02
Inventor 李莉佟运祥郑玉峰张殿涛姜树立
Owner 哈尔滨生材新材料科技发展有限公司
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