JPS6024284A - Production of copper electrode wire for can making - Google Patents

Abstract

PURPOSE:To produce a copper electrode wire for can making which has small variance and satisfies specific characteristics by subjecting the wire to one pass of drawing after annealing. CONSTITUTION:A Cu strand (a) is passed through a drawing machine 1 consisting plural dies 2 and capstans 3 by which the strand is drawn. The drawn wire is then passed through plural electrode wheels 4 and is annealed by electrical heating. The wire is thereafter passed through a die 5 by which the wire is drawn under light reduction of <=10% then the wire is taken up on a coiler 6. The wire having 13.5-24.0kg/mm.<2> 0.2% yield strength, 24.0-30.0kg/mm.<2> tensile strength, 10.0-30.0% elongation and >=99% conductivity is thus obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves forming a metal sheet into a can shape, and forming the joint part into an M'
The present invention relates to a method for producing copper electrode wire for can making, which is anti-dissolution, and in particular satisfies the characteristics required for electrode wires, as well as stabilizing 1.4 bamboo.

Conventional copper TX @ IK+I for can manufacturing is
A tandem line that anneals the U-wire in an annealer and winds it into a coiler! ! Electrical Cu wire is used, and it is recoiled using a rewinding machine in order to be attached to a special stand for can manufacturing. However, as a copper electrode wire,
In particular, in order to clear 0.2% proof stress and elongation, the range of manufacturing conditions was narrow, and there was a drawback that the properties varied widely.

Recently, with the improvement in the capacity of can making machines, the feed speed of electrode wire has increased from 30 m/min to 50 m/win, and accordingly, the electrode wire has a 0.2% yield strength of 18.4 to 23.5
Kg/#I#I2, tensile strength 25.0 to □29.1K (
Properties such as 1/eta2, elongation of 22 to 28%, and electrical conductivity of 99.0% or more are now required. In contrast, electrode wires are manufactured by changing the wire drawing conditions and annealing conditions in the above manufacturing process, but although the tensile strength is satisfied, the range of manufacturing conditions that satisfies 0.2% yield strength and elongation is very limited. It was narrow and the characteristics varied widely, making it extremely difficult to manufacture electrode wires that satisfied the above characteristics.

In view of this, as a result of various studies, the present invention has found that by adding one pass of wire drawing oil (■) after annealing, the variation in properties can be significantly reduced, and as a result of further studies, it has been found that the variation is small and satisfies the above properties. A method for manufacturing copper electrode wires for can manufacturing has been developed, in which drawn electrical Cu wire is annealed in an annealer, and then wire drawing oil is added to achieve a light reduction of less than 10% through a -pass. By winding it on a coiler, the 0.2% yield strength can be increased from 13.5 to 24,0K (1/1
rvn2, tensile strength 24.0 to 30.0K (1/s
2. It is characterized by having an elongation of 10.0 to 30.0% and an electrical conductivity of 99% or more.

That is, as shown in FIG. 1, the present invention draws a C1l strand (a) through a wire drawing 131 (1) consisting of a plurality of dies (2) and a capstan (3) in the same way as in the conventional method. is annealed by heating with electricity through a plurality of electrode rings (4). Next, the wire is drawn through one die (5) with a light reduction of 10% or less, and then wound around a coiler (6). In the figure (13), (7) indicates the Danley roll, and (8) indicates the stand.

In the present invention, after baking 1111, 1
The reason for adding a wire drawing process with a light reduction of 0% or less is to overcome the characteristic +1 required for copper electrode wires by N'5, and if the reduction exceeds 10%, the tensile strength and elongation are satisfied but 0. This is because the 2% yield strength becomes unstable, and in order to stably crease the tensile strength, elongation, and 0.2% saw resistance, it is necessary to set the reduction by the -pass to 3 to 6%. desirable.

Although FIG. 1 shows a case in which light reduction wire drawing and winding using wire drawing oil [, annealing, and -pass] are carried out continuously on a tandem line, the present invention is not limited to this. Wire drawing oil T1 annealing and -pass light reduction cutting can also be performed separately. However, from the viewpoint of productivity, it is preferable to carry out the process in one step using a tandem line as shown in FIG.

The present invention will now be described in detail with reference to embodiments.

Example (1) A wire with a diameter of 2.6 mm obtained by drawing a C1l rough wire for electric wire was drawn to a diameter of 1.42 # with a tandem line wire drawing machine shown in Fig. Electrical annealing under the conditions of (
After annealing at 25V), the wire was drawn through one die to a diameter of 1.38m (processing rate: 5.6%), and wound around a coiler to produce a copper electrode wire of 300K (l).
Wire drawing oil (I)-16) was used as the wire drawing oil (I) passed through each die to improve cooling and lubricity.

Take a sample every 301 (q) from this electrode wire,
% proof stress, tensile strength and elongation were measured. The results are shown in Table 1.

5- Measurement position in Table 1 0.29 (i resistance) 1 Tensile strength Elongation (Ki
l/mm2) (Kli/mm2) (%)1
22.0 26.8 25.2 2 21.7 2G, 9 24.8 3 21.6 26,8 24.8 4 22.0 27,0 22,8 5 '22,0 26,9 24.4 6 22.1 26.924.4 7 22.1 26,9 24.8 8 21.9 26,9 23.6 9 22.0 27,0 24,8 10 22.0 2G, 9 23.6 Specifications Value 18.4~23.5 25.0~29.1 2
2.0 to 28.0 It is clear from Table 1 that the characteristics of the copper electrode wire manufactured by the method of the present invention are all within the specified value range, and there is little variation.

Example <2> The wire was expanded and contracted in the same manner as in Example (1), then annealed, and then wire-drawn in one pass by various glue reductions, and wound around a coiler to produce a copper electrode wire.

6- Take samples from 3 places for each of these, and
．． 2% proof stress, tensile strength, and elongation were measured.

These results are shown in Table 2 in comparison with conventional annealed materials.

Table 2 Manufacturing method Processing rate 0.2% Proof strength Tensile strength elongation (%) (
KQ /mm2) (KG /mrIi2) (%) Method of the present invention 2 20.7 25.5 26.5IT 1
9.9 25.2 25.3 21.1 26,3 27.6 5 22.0 26.9 24,7 21.7 26.8 25,3 21.9 26,8 25.1 7 22.3 27,8 23.2 23.5 29.0 22.5 22.8 28,3 22.8 Comparison method 12 25.5 30,8 21.224.
7 29,5 20,7 25.8 31,2 20.9 Conventional method -16,327,324,8-17,027
,323,1 -18,928,318,2 It is clear from Table 2 that the method of the present invention satisfies the specification value, but even if the processing rate is lower than 5%,
Moreover, even if it is too large, the variation gradually increases, and it is understood that the comparison method and the conventional method, which have a large processing rate, cannot satisfy the specification values.

As described above, according to the present invention, it is possible to easily and stably manufacture a copper electrode wire that satisfies the characteristics ↑ (I) required for electrode wires for high-speed can making machines, and it has a remarkable effect on beams. It is something to play.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an example of the method of the present invention. a. Copper wire 1. Wire drawing I 2. Dice 3. Capstan 4. Electrode ring 5. Dice 6. Coiler Furukawa Electric, 6 Yawata Kaigandori, Ichihara City Chiba Electric Wire Manufacturing Co., Ltd. Inside 0 shots clear person Tamio Koguchi Furukawa Electric, 6 Yawata Kaigandori, Ichihara City Chiba Electric Wire Manufacturing Co., Ltd. Inside

Claims (3)

[Claims] (1) For electrical wire drawing (': 1lrA)
After annealing, the wire is drawn to a light reduction of 10% or less using a pass, and then wound on a roller to achieve a 0.2% yield strength of 13.5 to 24.0K (1/m
m2, tensile strength 24.0-30. OK! 1/mm2
A method for manufacturing a copper electrode wire for can making, characterized in that the elongation is 10.0 to 30.0% and the electrical conductivity is 99% or more. (2) - Pass the wire drawing process from 3 to 3.
A method for producing a copper electrode wire for can manufacturing according to claim 1, wherein the content is 6%. (3) Annealer] The manufacturing method according to claim 1 or 2, wherein the coiler is equipped with a die, and the wire drawing process and the wire drawing process 1 of annealing and light reduction are performed in one step on a tandem line. Method for manufacturing copper electrode wire for cans.