CN105195515A - Forming method for high-elongation copper foil - Google Patents

Abstract

The invention discloses a forming method for high-elongation copper foil. The method comprises the following steps that 1, heat preservation is performed on a copper strip at 450 DEG C-550 DEG C for 1-3 hours, and then the copper strip is quenched into salt water to be cooled, wherein the salt water contains 5-10 g/L sodium chloride; 2, heat preservation is performed on the copper strip cooled in the step 1 at 250 DEG C-300 DEG C for 0.5-1.5 hours, and then the copper strip is cooled to the room temperature; 3, cold rolling is performed on the copper strip processed through the step 2 on a cold rolling mill, and then the copper foil is obtained. Compared with an existing method, on the condition that the equivalent strength is maintained, the plasticity of the copper foil can be significantly improved, and the elongation can be improved.

Description

A kind of manufacturing process of high-elongation Copper Foil

Technical field

The present invention relates to a kind of manufacturing process of high-elongation Copper Foil.

Background technology

Tradition Copper Foil cold rolling is prolonged method and is easily occurred sclerosis, the problem that plasticity obviously declines due to die break, causes that Copper Foil intensity is high and percentage elongation is low.For overcoming this problem, prior art proposes carrying out annealing in process before cold rolling, although to a certain degree can alleviate the problem of plasticity decline, percentage elongation improves limited.

Summary of the invention

The technical problem to be solved in the present invention overcomes existing defect, provides a kind of manufacturing process of high-elongation Copper Foil.

In order to solve the problems of the technologies described above, the invention provides following technical scheme:

A manufacturing process for high-elongation Copper Foil, comprises the steps:

(1) after copper strips is incubated 1-3 hour at 450-550 DEG C, cool in salt solution of quenching, described salt solution is containing the sodium chloride of 5-10g/L;

(2), after step (1) cooled copper strips being incubated 0.5-1.5 hour at 250-300 DEG C, room temperature is cooled to;

(3) copper strips processed through step (2) is cold rolling on cold-rolling mill, obtains Copper Foil.

Further, when step (3) is cold rolling, a reduction ratio is 10-90%.

Compared with the conventional method, the present invention, under the intensity that maintenance is suitable, obviously can improve the plasticity of Copper Foil, improves percentage elongation.

Detailed description of the invention

Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

embodiment 1

(1), after the copper strips of 0.15mm being incubated 3 hours under 450 DEG C (nitrogen atmosphere), quench rapidly in the sodium-chloride water solution of 5g/L, cooling;

(2), after step (1) cooled copper strips being incubated 0.5 hour under 250 DEG C (nitrogen atmosphere), room temperature is cooled to;

(3) by cold-rolling mill on step (2) cooled copper strips, be cold-rolled to 0.10mm together, the percentage elongation of gained Copper Foil is 16%, tensile strength 207MPa.

embodiment 2

(1), after the copper strips of 0.15mm being incubated 2.5 hours under 500 DEG C (ammonia atmosphere), quench rapidly in the sodium-chloride water solution of 8g/L, cooling;

(2), after step (1) cooled copper strips being incubated 1 hour under 280 DEG C (nitrogen atmosphere), room temperature is cooled to;

(3) by cold-rolling mill on step (2) cooled copper strips, be cold-rolled to 0.08mm together, the percentage elongation of gained Copper Foil is 15.5%, tensile strength 210MPa.

embodiment 3

(1), after the copper strips of 0.15mm being incubated 1.5 hours under 550 DEG C (vacuum is 0.092MPa), quench rapidly in the sodium-chloride water solution of 10g/L, cooling;

(2), after step (1) cooled copper strips being incubated 1.5 hours under 300 DEG C (nitrogen atmosphere), room temperature is cooled to;

(3) by cold-rolling mill on step (2) cooled copper strips, be cold-rolled to 0.06mm together, the percentage elongation of gained Copper Foil is 16.2%, tensile strength 209MPa.

Comparative example

(1), after the copper strips of 0.15mm being incubated 4 hours under 600 DEG C (vacuum is 0.092MPa), room temperature is cooled to;

(2) by cold-rolling mill on step (1) cooled copper strips, be cold-rolled to 0.06mm together, the percentage elongation of gained Copper Foil is 11.5%, tensile strength 210MPa.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a manufacturing process for high-elongation Copper Foil, comprises the steps:

(1) after copper strips is incubated 1-3 hour at 450-550 DEG C, cool in salt solution of quenching, described salt solution is containing the sodium chloride of 5-10g/L;

(2), after step (1) cooled copper strips being incubated 0.5-1.5 hour at 250-300 DEG C, room temperature is cooled to;

(3) copper strips processed through step (2) is cold rolling on cold-rolling mill, obtains Copper Foil.

2. the manufacturing process of high-elongation Copper Foil according to claim 1, it is characterized in that, when step (3) is cold rolling, a reduction ratio is 10-90%.