A method for producing copper alloy wire by semi-solid continuous extrusion

A copper alloy and semi-solid technology, which is applied in the field of semi-solid continuous extrusion to produce copper alloy wire, can solve problems such as segregation of liquid copper easily oxidized, high requirements for molds, and large thermal conductivity, etc., to achieve excellent mechanical properties and improve mold quality. The effect of high life and productivity

Active Publication Date: 2019-11-08
KUNMING UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

[0004] At present, semi-solid technology has been applied and researched more on low-melting-point alloys such as magnesium-aluminum alloys, but less applied to high-melting-point alloys such as copper alloys. This is because copper alloys have high melting points, high thermal conductivity, and are easy to oxidize. The traditional rheological extrusion technology will produce defects such as difficult operation, high mold requirements, easy oxidation of copper liquid and uneven structure segregation

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  • A method for producing copper alloy wire by semi-solid continuous extrusion
  • A method for producing copper alloy wire by semi-solid continuous extrusion

Examples

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Embodiment 1

[0027] A method for producing copper alloy wire by semi-solid continuous extrusion, the forming process is as figure 1 As shown, the specific steps are as follows:

[0028] (1) The material in this example is ZCuSn10P1 copper alloy. The solidus temperature of the ZCuSn10P1 copper alloy was measured. The solidus temperature of the alloy was measured by differential scanning calorimetry (DSC) to be 876.1°C, and the liquidus temperature was 1024.2 ℃.

[0029] (2) Heat the rectangular ZCuSn10P1 copper alloy ingot to 550°C.

[0030] (3) Hot rolling the heated rectangular ingot, the hot rolling process is as follows: the rolling speed is 3m / min, the rolling pass is 2 times, and the cumulative deformation is 16%.

[0031] (4) Cool the hot-rolled rectangular ingot to room temperature, and then cold-roll it. The cold-rolling process is as follows: the rolling speed is 1m / min, and the rolling passes are 2 times, 4 times, and 6 times; the cumulative deformation 20%, 40%, and 60% respe...

Embodiment 2

[0037] A method for producing copper alloy wire by semi-solid continuous extrusion, the forming process is as figure 1 As shown, the specific steps are as follows:

[0038] (1) The material in this example is ZCuSn10P1 copper alloy. The solidus temperature of the ZCuSn10P1 copper alloy was measured. The solidus temperature of the alloy was measured by differential scanning calorimetry (DSC) to be 876.1°C, and the liquidus temperature was 1024.2 ℃.

[0039] (2) Heat the rectangular ZCuSn10P1 copper alloy ingot to 560°C.

[0040] (3) Hot rolling the heated rectangular ingot, the hot rolling process is as follows: the rolling speed is 2m / min, the rolling pass is 4 times, and the cumulative deformation is 18%.

[0041] (4) Cool the hot-rolled rectangular ingot to room temperature, and then cold-roll it. The cold-rolling process is as follows: the rolling speed is 2m / min, the rolling pass is 2 times, and the cumulative deformation is 20%.

[0042] (5) Heat the ingot after cold r...

Embodiment 3

[0046]A method for producing copper alloy wire by semi-solid continuous extrusion, the forming process is as figure 1 As shown, the specific steps are as follows:

[0047] (1) The material in this example is ZCuSn10P1 copper alloy. The solidus temperature of the ZCuSn10P1 copper alloy was measured. The solidus temperature of the alloy was measured by differential scanning calorimetry (DSC) to be 876.1°C, and the liquidus temperature was 1024.2 ℃.

[0048] (2) Heat the rectangular ZCuSn10P1 copper alloy ingot to 540°C.

[0049] (3) Hot rolling the heated rectangular ingot, the hot rolling process is as follows: the rolling speed is 4m / min, the rolling pass is 2 times, and the cumulative deformation is 12%.

[0050] (4) Cool the hot-rolled rectangular ingot to room temperature, and then cold-roll it. The cold-rolling process is as follows: the rolling speed is 3m / min, the rolling passes are 10 times, and the cumulative deformation is 60%.

[0051] (5) Heat the ingot after col...

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Abstract

The invention discloses a method for producing a copper alloy wire by semi-solid continuous extrusion and belongs to the field of semi-solid forming. The method for producing the copper alloy wire bysemi-solid continuous extrusion has the steps that firstly, a rectangular ingot is heated to 10-20 DEG C above the recrystallization temperature; then multi-direction multi-pass hot rolling is carriedout, the temperature is reduced to the room temperature, then multi-direction multi-pass cold rolling is carried out, then the ingot is sent into an induction heating furnace for heating, a heated blank is conveyed in an extrusion wheel groove of a continuous extruder, continuous extrusion is realized through a die, and circulating cooling water is introduced into the extrusion wheel to cool theextrusion wheel so as to ensure that the die temperature is in the fixed range, so that the solidification speed of semi-solid metal is controlled, and winding and arranging of the copper alloy wire on a winding machine are carried out after extrusion is completed. By the adoption of the method, the copper alloy wire is produced by using the semi-solid continuous extrusion method, the continuous production of wires of multiple specifications can be realized, the production efficiency is improved, the load borne by the die is lowered, and thus the service life of the die is prolonged.

Description

technical field [0001] The invention relates to a method for producing copper alloy wire by semi-solid continuous extrusion, which belongs to the field of semi-solid forming. Background technique [0002] Semi-solid processing technology is a processing method in which a solid-liquid mixed slurry with certain suspended solid particles in the metal mother liquid is obtained by controlling the solid-liquid temperature range or vigorously stirring during the metal solidification process, and the solid-liquid mixed slurry is called semi-solid slurry. [0003] Compared with traditional casting, the viscosity of semi-solid slurry obtained by semi-solid processing is higher than that of liquid metal, and it is easy to control: less gas is entrained in the mold, which reduces oxidation, improves processability, reduces mold bonding, improves surface finish, and is easy to automate and form New processing technology; flow stress is lower than that of solid metal: semi-solid slurry h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04B21C29/00B21C29/04
CPCB21C29/00B21C29/04B21C37/04
Inventor 肖寒熊迟李乃拥卢德宏周荣锋蒋业华
Owner KUNMING UNIV OF SCI & TECH
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