Device for preparing ultra-fine grain copper-aluminum wire with variable passage and preparation method

A preparation device and ultra-fine crystal technology, applied in the direction of wire drawing dies, etc., can solve the problems of difficult to meet the mass production of microplastic forming, complex process, high processing cost, etc., to achieve good consistency, simple process, and good deformation effect Effect

Inactive Publication Date: 2013-04-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the disadvantages existing in the prior art that it is not suitable for batch repeated process, the equipment used is expensive, the processing cost is high, the process is complicated, and it is difficult to meet the needs of microplastic forming mass production, the present invention proposes a preparation of variable channel ultrafine Device and preparation method of crystal copper-aluminum wire

Method used

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  • Device for preparing ultra-fine grain copper-aluminum wire with variable passage and preparation method
  • Device for preparing ultra-fine grain copper-aluminum wire with variable passage and preparation method
  • Device for preparing ultra-fine grain copper-aluminum wire with variable passage and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment is a kind of specification for forming copper wire diameter It is a variable channel device and a drawing method with a grain size of 4mm and a grain size of 50-100nm.

[0028] The channel changing device proposed in this embodiment includes a mold, a guide wheel 1, a reversing wheel 10, a heating and cooling assembly and a drawing assembly.

[0029] The mold is composed of a mold core 8 and a mold sleeve 4; the inner diameter of the mold sleeve 4 is equal to the outer diameter of the mold core 8, which is 7mm; the mold core 8 is a hollow cylinder divided into two parts, and its inner cavity is a circular section A cavity with a smooth transitional cross-sectional shape that changes from an elliptical cross-section to a circular cross-section; the mold core 8 is fixed in the mold casing 4 .

[0030] The cavity of the mold core 8 is divided into a first guide section A, a deformation section C and a second guide section B.

[0031] The first guide sect...

Embodiment 2

[0047] This embodiment is a kind of specification for forming aluminum wire rod diameter A variable channel drawing device and method with a grain size of 6mm and a grain size of 80-150nm.

[0048] The drawing device proposed in this embodiment includes a mold, a guide wheel 1, a reversing wheel 10, a heating and cooling assembly and a drawing assembly.

[0049] The mold is composed of a mold core 8 and a mold sleeve 4; the inner diameter of the mold sleeve 4 is equal to the outer diameter of the mold core 8, both of which are 10mm; the mold core 8 is a hollow cylinder divided into two lobes, and its inner cavity is a circular section A cavity with a smooth transitional cross-sectional shape that changes from an elliptical cross-section to a circular cross-section; the mold core 8 is fixed in the mold casing 4 .

[0050] The cavity of the mold core 8 is divided into a first guide section A, a deformation section C and a second guide section B.

[0051] The first guide secti...

Embodiment 3

[0066] This embodiment is a kind of specification for forming aluminum wire rod diameter The variable channel drawing device and method have a grain size of 8mm and 30-80nm.

[0067] The drawing device proposed in this embodiment includes a mold, a guide wheel 1, a reversing wheel 10, a heating and cooling assembly and a drawing assembly.

[0068] The mold is composed of a mold core 8 and a mold sleeve 4; the inner diameter of the mold sleeve 4 is equal to the outer diameter of the mold core 8, both of which are 15mm; the mold core 8 is a hollow cylinder divided into two parts, and its inner cavity is a circular section A cavity with a smooth transitional cross-sectional shape that changes from an elliptical cross-section to a circular cross-section; the mold core 8 is fixed in the mold casing 4 .

[0069] The cavity of the mold core 8 is divided into a first guide section A, a deformation section C and a second guide section B.

[0070] The first guide section A of the mol...

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Abstract

The invention relates to a device for making an ultra-fine grain copper-aluminum wire with a variable passage and a preparation method. The device comprises a mold, a guide wheel (1), a reversing wheel (10), a heating and cooling assembly and a drawing assembly, wherein the mold consists of a mold core (8) and a mold sleeve (4), the heating and cooling assembly comprises a thermocouple (6), a heating resistance wire (9), a cooled water sleeve (7), a ceramic sleeve (5) and a temperature controller (11), and the drawing assembly comprises a motor (12), a wire storage cylinder (14) and a tensionwheel (13). In the preparation method, the temperature, the drawing speed and the drawing direction are regulated, and a copper-aluminum wire (2) is drawn in a plurality of processes in a reciprocating way to finish the preparation of ultra-fine grain materials. The device provided by the invention can refine crystalline grains of the materials, enhance the mechanical property of a formed piece, improve the deformation texture, be applied to preparation of micro plasticity moulding ultra-fine grain materials and also be applied to the research and production fields of copper-aluminum wire drawing moulding.

Description

technical field [0001] The invention relates to the field of ultra-fine grain preparation and microplastic processing of metal materials copper and aluminum, in particular to a method and device for drawing copper and aluminum wires with variable channels. Background technique [0002] Bulk ultra-fine-grained materials with a grain size of 1-1000nm have excellent physical and mechanical properties, and are one of the hotspots in the field of materials research. At present, the preparation technology of ultra-fine-grained materials mainly includes inert gas condensation in-situ pressurization method, high-energy ball milling method, amorphous crystallization method, melt solidification method and large plastic deformation method (Severe Plastic Deformation, SPD) and so on. Compared with other forming technologies, the SPD forming method has the biggest advantage of being able to obtain bulk ultra-fine-grained and even nano-materials with a dense structure, no pores, and no po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C1/02B21C1/12B21C3/02B21C9/00
Inventor 汪程鹏李付国陈波
Owner NORTHWESTERN POLYTECHNICAL UNIV
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