JP5759264B2 - Modified cross-section copper alloy sheet excellent in Ni plating characteristics and method for producing the same - Google Patents

Description

  The present invention relates to a modified cross-section copper alloy plate excellent in Ni plating characteristics and a method for producing the same, and in particular, the copper alloy composition is Fe; 0.05 to 0.15 mass%, P; 0.015 to 0.050. The present invention relates to a deformed cross-section copper alloy sheet having good Ni plating characteristics, each of which contains, by mass, Zn and 0.01 to 0.20 mass%, and the balance Cu and inevitable impurities, and a method for producing the same.

The deformed cross-section copper alloy plate with thick and thin parts aligned in the width direction is then stamped and bent by press working, and is used as a terminal material and lead frame material. Electrical conductivity, heat dissipation, and plating characteristics are required.
Generally, this modified cross-section copper alloy plate is produced by a flat plate processing step for producing a flat plate having a certain thickness in the plate width direction from a copper alloy ingot, and a variant having a different thickness in the plate width direction using the flat plate. Manufactured by a profile processing step for producing a cross-sectional plate. The flat plate processing step includes soaking of the copper alloy ingot, hot rolling, cold rolling, annealing, and then cold rolling performed as necessary. In the special shape processing process, after processing the flat plate produced by the flat plate processing step into the final product shape, it is cut to the required width, followed by rough cold working, annealing, finish cold working, slitter processing, as required It consists of each process of correction performed. In this case, annealing may not be performed in the middle of cold working, but may be performed after finishing cold working. Further, the cold working in the deforming process is performed by cold rolling using a deformed roll, or cold rolling or forging using a deformed die, and different processing methods may be combined.

  In Patent Document 1, a flat plate having a certain thickness in the plate thickness direction is manufactured from the ingot, and the flat plate is cold-rolled by a deformed roll to obtain a modified cross-section copper alloy plate having a different thickness in the plate width direction. In manufacturing, a deformed cross-section copper alloy sheet having high heat resistance, high conductivity, and excellent bending workability is disclosed without being annealed once in the middle or at the end of cold rolling with a deformed roll. ing. Ni: 0.03-0.5 mass%, P: 0.01-0.2 mass% is contained, Ni / P which is a mass ratio of Ni and P is 2-10, the remainder copper and unavoidable A copper alloy made of impurities is used. Desirably, it contains Sn: 0.005 to 0.5% or / and Fe: 0.005 to 0.20%. If necessary, it contains Zn: 0.005 to 0.5%. In the cold rolling with a deformed roll, the cold working rate of the thin portion is set to 30 to 90%.

  Patent Document 2 discloses a copper alloy strip for terminals and a method for manufacturing the same, which have good bending workability and can easily form a core crimping portion and a fitting convex portion with high strength. ing. A copper alloy strip for a terminal for manufacturing a terminal, which is composed of an aging precipitation type copper alloy, and a thick plate portion having a thick plate thickness in a cross section perpendicular to the longitudinal direction of the strip, and the thick plate And the ratio TS1 / TS2 between the tensile strength TS1 of the thick plate portion and the tensile strength TS2 of the thin plate portion is in the range of 1 <TS1 / TS2 ≦ 1.4. Is set to

JP 2007-39735 A JP 2009-9887 A

  Conventional Cu-Fe-P-based and Cu-Ni-Si-based deformed cross-section copper alloy plates are regarded as important in terms of heat resistance and bending workability as terminal materials and lead frame materials. It is often used after being subjected to partial plating treatment, particularly Ni plating, and good plating characteristics with little variation are required between the thick and thin portions. In conventional Cu-Fe-P-based and Cu-Ni-Si-based deformed cross-section copper alloy plates, uniform Ni plating characteristics are obtained due to the difference in metal structure between the thick and thin portions resulting from the manufacturing method. That was difficult.

  In the present invention, the alloy composition contains Fe; 0.05 to 0.15% by mass, P; 0.015 to 0.050% by mass and Zn; 0.01 to 0.20% by mass, respectively, and the balance Cu and An odd-shaped cross-section copper alloy plate made of inevitable impurities and having a Ni-plating characteristic with a uniform thickness variation between a thick-walled portion and a thin-walled portion, and a method for manufacturing the same provide.

As a result of diligent investigation focusing on the crystal structure of the Cu-Fe-P deformed cross-section copper alloy plate, the inventors have made a scanning electron microscope with a backscattered electron diffraction image system of the thick and thin portions. It was found that the Ni plating characteristics are improved by keeping the ratio of the Brass orientation density, the ratio of the Copper orientation density, and the ratio of the Goss orientation density measured by the EBSD method according to the above.
Further, in order to produce this deformed cross-section copper alloy sheet, rough rolling and finish rolling are performed by cold rolling with a deformed groove roll, and the width of the flat copper alloy material before rolling is set to W1 mm. When the width of the cross-section copper alloy plate is W2 mm, rough rolling and finish rolling are performed so that W2 / W1 is 1.01 to 1.2. It was found that the ratio of the Brass azimuth density, the ratio of the Copper azimuth density, and the ratio of the Goss azimuth density measured in the above could be within the optimum range.

That is, the deformed cross-section copper alloy plate excellent in Ni plating characteristics of the present invention is a deformed cross-section copper alloy plate in which a thick portion and a thin portion are arranged in the width direction, Fe: 0.05 to 0.15 mass% , P; 0.015 to 0.050% by mass and Zn; 0.01 to 0.20% by mass, each having a composition consisting of the balance Cu and inevitable impurities, and having a backscattered electron diffraction image system When the measurement value of the thick part measured by the EBSD method using a scanning electron microscope is T1, and the measurement value of the thin part is T2, the ratio of the Brass orientation density (T1 / T2) is 0.8 to 2.0, the ratio of Copper orientation density (T1 / T2) is 0.5 to 1.2, and the ratio of Goss orientation density (T1 / T2) is 1.0 to 2.5. And
The ratio of Brass orientation density (T1 / T2) by a scanning electron microscope with a backscattered electron diffraction image system exceeds 2.0, or the ratio of Copper orientation density (T1 / T2) exceeds 1.2, or When the ratio of Goss orientation density (T1 / T2) exceeds 2.5, the uniformity of Ni plating applied to the surface deteriorates, and the ratio of Brass orientation density (T1 / T2) is less than 0.8, or If the ratio of Copper orientation density (T1 / T2) is less than 0.5 or the ratio of Goss orientation density (T1 / T2) is less than 1.0, the effect is saturated and the rolling cost during production increases. To do.

Furthermore, the odd-shaped cross-section copper alloy sheet excellent in Ni plating characteristics of the present invention is characterized by containing 0.01 to 0.20% by mass of at least one element selected from Ni and Co.
Addition of these elements has a role of further improving heat resistance. If the added amount is less than 0.01% by mass, there is no effect, and if it exceeds 0.20% by mass, the conductivity is lowered.

  Moreover, the manufacturing method of the irregular cross-section copper alloy plate excellent in Ni plating characteristics includes a small-diameter roll portion for rough rolling for forming a coarse-wall portion and a large-diameter roll portion for rough rolling for forming a coarse-thin portion. Rolling by sandwiching a flat copper alloy material with a rough rolling roll comprising a step roll for rough rolling formed side by side in the axial direction and a flat roll for rough rolling whose radius is constant along the axial direction. A rough rolling process step for producing a rough deformed cross-section copper alloy sheet, and rolling the coarse wall portion to roll the coarse wall portion to form the thick wall portion, and rolling the coarse and thin wall portion. A step-roll for finish rolling in which large-diameter roll portions for finish rolling for forming the thin portion are formed side by side in the axial direction, and a flat roll for finish rolling in which the radius is constant along the axial direction. By the finish rolling roll A finish rolling process for producing a deformed cross-section copper alloy plate by sandwiching a rough deformed cross-section copper alloy plate, the width of the flat copper alloy material is W1 mm, and the width of the deformed cross-section copper alloy plate When W is 2 mm, rough rolling and finish rolling are performed so that W2 / W1 is 1.01 to 1.2.

Rough rolling and finish rolling are performed using a rolling roll consisting of a stepped roll having a large-diameter roll section aligned in the axial direction and a flat roll having a constant radius along the axial direction. Measurement is performed by an EBSD method using a scanning electron microscope with a backscattered electron diffraction image system, with a so-called grooved roll deforming method, and setting W2 / W1 to 1.01 to 1.2. When the measured value of the thick part is T1, and the measured value of the thin part is T2, the ratio of the Brass orientation density (T1 / T2) is 0.8 to 2.0, and the Copper orientation density is The ratio (T1 / T2) is 0.5 to 1.2, and the Goss orientation density ratio (T1 / T2) can be 1.0 to 2.5.
When W2 / W1 exceeds 1.2, the ratio of Brass orientation density (T1 / T2), the ratio of Copper orientation density (T1 / T2), or the ratio of Goss orientation density (T1 / T2) Exceeding the upper limit, the difference in the metal structure between the thick part and the thin part becomes large, and the Ni plating characteristics deteriorate.
When W2 / W1 is less than 1.01, the ratio of Brass orientation density (T1 / T2), the ratio of Copper orientation density (T1 / T2), or the ratio of Goss orientation density (T1 / T2) is the lower limit. There is a tendency that the Ni plating characteristics are deteriorated below the value.
In order to keep W2 / W1 within the range of 1.01 to 1.2, in the finish rolling process, the contact length between the rolling roll and the rough deformed cross-section copper alloy plate is Lmm, and the contact angle is θ °. Is preferably rolled so that the value of L / θ is in the range of 1.0 to 5.0.
When the value of L / θ is less than 1.0, W2 / W1 tends to exceed 1.2, and when the value of L / θ exceeds 5.0, W2 / W1 hardly falls within 1.01 to 1.2. Become.
A die having a forming surface for forming a convex portion that becomes a thick-walled portion and a concave portion that becomes the thin-walled portion, and a position facing the forming surface of the die and a forming surface of the die, for rough rolling or finish rolling When the pressing roll is in a position displaced from the die molding surface, the material is moved in the length direction by the pressing roll that is reciprocated along the length direction of the molding surface of the die. When the feed roll is intermittently fed, the material is sandwiched between the press roll and the die forming surface when the press roll is at the position facing the die forming surface. The spread of the direction becomes large, and it becomes very difficult to keep W2 / W1 within the range of 1.01 to 1.2.
Moreover, after rough rough rolling, annealing for tempering may be performed, and then finish rolling may be performed.

  According to the present invention, the alloy composition contains Fe; 0.05 to 0.15% by mass, P; 0.015 to 0.050% by mass and Zn; 0.01 to 0.20% by mass, respectively, with the balance Cu and An odd-shaped cross-section copper alloy plate made of inevitable impurities and having a Ni-plating characteristic with a uniform thickness variation between a thick-walled portion and a thin-walled portion, and a method for manufacturing the same Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a modified cross-section copper alloy plate according to the present invention in the order of manufacturing steps of a flat copper alloy material, a rough modified cross-section copper alloy plate, and a modified cross-section copper alloy plate. It is a perspective view which shows the state which has manufactured the rough-shaped cross-section copper alloy board from the flat copper alloy raw material with the rough rolling roll. It is a perspective view which shows the state which has manufactured the irregular cross-section copper alloy plate from the rough irregular cross-section copper alloy plate with the finish rolling roll. It is a schematic diagram which shows the relationship between the contact length L and the contact angle (theta) of the finish rolling roll of FIG. 3, and a rough copper alloy irregular cross-section board. FIG. 5 is a dimensional relationship diagram of FIG. 4.

With reference to FIGS. 1-5, one Embodiment of the irregular cross-section copper alloy plate of this invention and its manufacturing method is described.
The modified cross-section copper alloy plate 1 excellent in press punching workability of the present invention is a modified cross-section copper alloy plate (see FIG. 1) having a width W2 in which a thick portion 2 and a thin portion 3 are arranged in the width direction. In the illustrated example, the thin portions 3 are disposed on both sides of the thick portion 2, and the inclined portion 4 having a rising inclination angle β is formed between the thick portion 2 and the thin portion 3. This modified cross-section copper alloy sheet 1 contains Fe; 0.05 to 0.15 mass%, P; 0.015 to 0.050 mass%, and Zn; 0.01 to 0.20 mass%, respectively, and the balance The measured value of the thick part 2 is T1 and the measured value of the thin part 3 when measured by the EBSD method using a scanning electron microscope with a backscattered electron diffraction image system. When T2, the ratio of Brass orientation density (T1 / T2) is 0.8 to 2.0, the ratio of Copper orientation density (T1 / T2) is 0.5 to 1.2, and Goss orientation density The ratio (T1 / T2) is 1.0 to 2.5.
Moreover, the irregular cross-section copper alloy plate 1 may contain 0.01 to 0.20 mass% of at least one of elements made of Ni and Co. Addition of these elements has a role of further improving heat resistance. If the added amount is less than 0.01% by mass, there is no effect, and if it exceeds 0.20% by mass, the conductivity is lowered.

  The ratio of Brass orientation density (T1 / T2) by a scanning electron microscope with a backscattered electron diffraction image system exceeds 2.0, or the ratio of Copper orientation density (T1 / T2) exceeds 1.2, or When the ratio of Goss orientation density (T1 / T2) exceeds 2.5, the uniformity of Ni plating applied to the surface deteriorates, and the ratio of Brass orientation density (T1 / T2) is less than 0.8, or If the ratio of Copper orientation density (T1 / T2) is less than 0.5 or the ratio of Goss orientation density (T1 / T2) is less than 1.0, the effect is saturated and the rolling cost during production increases. To do.

The Brass orientation density, Copper orientation density, and Goss orientation density according to the EBSD method were measured as follows.
The measurement area of the sample is divided into hexagonal areas, and for each divided area, a Kikuchi pattern is obtained from the reflected electrons of the electron beam incident on the sample surface, and the electron beam is scanned two-dimensionally on the sample surface. , Measuring the orientation of all pixels within the measurement area range at a step size of 1.0 μm, and regarding the boundary where the orientation difference between adjacent pixels is 15 ° or more as the grain boundary, The distribution was determined. Then, it is determined whether each crystal grain is a target Brass orientation (within 15 ° from the ideal orientation), a Copper orientation (within 15 ° from the ideal orientation), or a Goss orientation (within 15 ° from the ideal orientation). Then, the Brass orientation density (area ratio of crystal orientation), Copper orientation density (area ratio of crystal orientation), and Goss orientation density (area ratio of crystal orientation) were determined in the measurement region.

Next, the manufacturing method of the irregular cross-section copper alloy plate of this invention is demonstrated.
First, Fe; 0.05 to 0.15% by mass, P; 0.015 to 0.050% by mass and Zn; 0.01 to 0.20% by mass, respectively, with the balance being Cu and inevitable impurities A flat copper alloy material 10 having a composition width W1 is prepared.
Then, as shown in the order of the arrows in FIG. 1, the flat strip copper alloy material 10 is rolled to form a rough deformed cross-section copper alloy plate 11 in which the thick and thin portions 12 and 13 are aligned in the width direction. By the rough rolling process and the finish rolling process for further rolling the rough deformed cross-section copper alloy plate 11, the deformed cross-section copper alloy sheet 1 in which the thick part 2 and the thin part 3 are arranged in the width direction is manufactured.
In the rough rolling process, rough rolling is performed by cold rolling by a grooved roll system including a rough rolling roll 23 including a rough rolling stepped roll 21 and a rough rolling flat roll 22 as shown in FIG. A rough deformed cross-section copper alloy plate 11 is obtained. In this method, the rough rolling stepped roll 21 has a coarse rolling small diameter roll portion 24 for forming the coarse thick portion 12 and a rough rolling large diameter roll portion 25 for forming the coarse thin portion 13 as axes. The flat rolls 22 for rough rolling have a radius that is constant along the axial direction. Then, the flat strip copper alloy material 10 is sandwiched and rolled by the rough rolling roll 23 composed of the rough rolling stepped roll 21 and the rough rolling flat roll 22, and the rough thin portion 13 is formed on both sides of the thick portion 12. Is obtained, and a rough deformed cross-section copper alloy plate 11 is obtained in which a portion between the thick and thin portions 12 and 13 is formed as an inclined portion 14 having a rising inclination angle β ′.

Next, as shown in the order of the arrows in FIG. 1, the rough deformed section copper alloy plate 11 is formed on the deformed section copper alloy sheet 1 by a finish rolling process.
In the finish rolling process, a flat copper alloy material is obtained by cold rolling by a grooved roll system including a finish rolling roll 33 comprising a step roll 31 for finishing rolling and a flat roll 32 for finishing rolling as shown in FIG. When the width of 10 is W1 mm and the width of the deformed cross-section copper alloy plate 1 is W2 mm, finish rolling is performed so that W2 / W1 is 1.01 to 1.2 to obtain the deformed cross-section copper alloy plate 1. In this method, the step roll 31 for finish rolling has a small diameter roll portion 34 for finish rolling for forming the thick portion 2 and a large diameter roll portion 35 for finish rolling for forming the thin portion 3 in the axial direction. The flat rolls 32 for finish rolling are formed side by side, and the radius is constant along the axial direction. Then, the finish rolling roll 33 composed of the step roll 31 for finish rolling and the flat roll 32 for finish rolling sandwiches the rough deformed cross-section copper alloy plate 111 and finish-rolls, and the thin portion 3 is formed on both sides of the thick portion 2. Is obtained, and a deformed cross-section copper alloy plate 1 is obtained in which a portion between the thick portion 2 and the thin portion 3 is a rising portion 4 having a rising inclination angle β.

In this case, when W2 / W1 exceeds 1.2, the ratio of Brass orientation density (T1 / T2), the ratio of Copper orientation density (T1 / T2), or the ratio of Goss orientation density (T1 / T2). However, each upper limit is exceeded, the difference of the metal structure of the thick part 2 and the thin part 3 becomes large, and Ni plating characteristic will deteriorate.
When W2 / W1 is less than 1.01, the ratio of Brass orientation density (T1 / T2), the ratio of Copper orientation density (T1 / T2), or the ratio of Goss orientation density (T1 / T2) is the lower limit. There is a tendency that the Ni plating characteristics are deteriorated below the value.
Further, when the contact length between the finish rolling roll 33 and the rough deformed cross-section copper alloy plate 11 is Lmm and the contact angle is θ °, the value of L / θ is in the range of 1.0 to 5.0. To produce a deformed cross-section copper alloy sheet 1 having a width of W2.
As shown in FIGS. 4 and 5, the contact length L is the distance at which the rough deformed cross-section copper alloy plate 11 is in contact with the finish rolling roll 33, and the contact angle θ is the rough deformed cross-section copper alloy plate 11. When the thickness is h ₀ and the thickness of the modified cross-section copper alloy plate 1 is h ₁ , tan θ = {(h ₀ −h ₁ ) / 2} / L.
When the value of L / θ is less than 1.0, W2 / W1 tends to exceed 1.2, and when the value of L / θ exceeds 5.0, W2 / W1 falls within the range of 1.01 to 1.2. It becomes difficult to fit.
The thick portion 2 and the thin portion 3 are substantially shaped in the rough rolling process before the finish rolling process. In the finish rolling process, the surfaces of the rough thick part 12 and the rough thin part 13 are finally formed. It will be formed into a shape.
Further, after rough rolling, annealing for tempering may be performed, and then finish rolling may be performed.

The alloy composition contains Fe; 0.05 to 0.15% by mass, P; 0.015 to 0.050% by mass and Zn; 0.01 to 0.20% by mass, respectively, from the remainder Cu and inevitable impurities The resulting ingot was subjected to hot rolling and cold rolling to produce a coil having a thickness of 2.0 mm and a width of 600 mm, and a strip material having a width of 50 mm was produced through a slitter line.
Using this strip as a raw material, a coil having a thickness of 2.0 mm × width 50 mm (W1), a coarse rolling small-diameter roll portion for forming a coarse-walled portion, and a coarse rolling large-diameter for forming a coarse-thinned portion. Rolled by a rough rolling roll consisting of a stepped roll for rough rolling formed with the roll part aligned in the axial direction and a flat roll for rough rolling whose radius is constant along the axial direction, The width W3 is 50 mm, the width of the coarse portion is 20 mm, the thickness of the coarse portion is 0.2 to 0.4 mm, the thickness of the coarse portion is 1.1 to 1.35 mm, A rough deformed cross-section copper alloy plate having a rising inclination angle β ′ of 10 ° and having coarse and thin portions on both sides of the thick and thick portion was continuously produced.

  Next, this rough deformed cross-section copper alloy sheet is subjected to finish rolling for forming a small diameter roll portion for finish rolling and a thin portion at W2 / W1 and L / θ shown in Table 1 for forming a thick portion. Rolling is performed by a finish rolling roll consisting of a step roll for finish rolling in which large-diameter roll parts are formed side by side in the axial direction and a flat roll for finish rolling whose radius is constant along the axial direction. The width is W2 mm, the width of the thick portion is 23 to 24 mm, the thickness of the thin portion is 0.15 to 0.32 mm, the thickness of the thick portion is 1.0 to 1.20 mm, The vertical cross-section copper alloy plates of Examples 1 to 8 and Comparative Examples 1 to 5 having the shape shown in FIG. 1 having a rising inclination angle β of 10 ° (80 ° from the horizontal plane) and thin portions on both sides of the thick portion. It was produced continuously.

Samples were taken from each of the irregular cross-section copper alloy plates of Examples 1 to 8 and Comparative Examples 1 to 5, and the thick and thin portions were measured by the EBSD method using a scanning electron microscope with a backscattered electron diffraction image system. The ratio of Brass orientation density (T1 / T2), the ratio of Copper orientation density (T1 / T2), and the ratio of Goss orientation density (T1 / T2) were determined.
The Brass orientation density, Copper orientation density, and Goss orientation density were measured as follows.
The measurement area of the sample is divided into hexagonal areas, and for each divided area, a Kikuchi pattern is obtained from the reflected electrons of the electron beam incident on the sample surface, and the electron beam is scanned two-dimensionally on the sample surface. , Measuring the orientation of all pixels within the measurement area range at a step size of 1.0 μm, and regarding the boundary where the orientation difference between adjacent pixels is 15 ° or more as the grain boundary, The distribution was determined. Then, it is determined whether each crystal grain is a target Brass orientation (within 15 ° from the ideal orientation), a Copper orientation (within 15 ° from the ideal orientation), or a Goss orientation (within 15 ° from the ideal orientation). Then, the Brass orientation density (area ratio of crystal orientation), Copper orientation density (area ratio of crystal orientation), and Goss orientation density (area ratio of crystal orientation) were determined in the measurement region.
The results are shown in Table 1.

Next, Ni plating with a thickness of 1.50 μm was applied to the irregular cross-section copper alloy plates of Examples 1-8 and Comparative Examples 1-5 having a length of 50 mm under the conditions shown in Table 2. The thickness of the Ni plating at the thin part was measured.
The Ni plating film thickness was measured continuously using a fluorescent X-ray film thickness meter, and the average value was defined as the plating thickness of each part. The results are shown in Table 3. In Table 3, the inclined portion 1 indicates one of the two inclined portions, and the inclined portion 2 indicates the other. The thin part 1 is also one of the two thin parts, and the thin part 3 shows the other.

  From these results, it can be seen that the deformed cross-section copper alloy sheet of the present invention can obtain Ni plating with little variation in thickness between the thick part and the thin part.

  As mentioned above, although the manufacturing method of the plated copper strip which is embodiment of this invention was demonstrated, this invention is not limited to this description, In the range which does not deviate from the technical idea of the invention, it can change suitably. is there.

DESCRIPTION OF SYMBOLS 1 Profile cross-section copper alloy plate 2 Thick part 3 Thin part 10 Flat copper alloy material 11 Rough profile cross-section copper alloy sheet 12 Coarse thick part 13 Coarse thin part 21 Step roll for rough rolling 22 Flat roll for rough rolling 23 Coarse Rolling roll 24 Small diameter roll section for rough rolling 25 Large diameter roll section for rough rolling 31 Step roll for finishing rolling 32 Flat roll for finishing rolling 33 Finishing rolling roll 34 Small diameter rolling section for finishing rolling 35 Large diameter rolling section for finishing rolling

Claims (3)

  It is a modified cross-section copper alloy plate in which a thick part and a thin part are arranged in the width direction, Fe; 0.05 to 0.15 mass%, P; 0.015 to 0.050 mass% and Zn; 0.01 Each of which has a composition composed of the balance Cu and inevitable impurities, and each of the thick-walled portion measured by the EBSD method using a scanning electron microscope with a backscattered electron diffraction image system. When the measurement value is T1, and the measurement value of the thin portion is T2, the ratio of the Brass orientation density (T1 / T2) is 0.8 to 2.0, and the ratio of the Copper orientation density (T1 / T2) is 0. An odd-shaped cross-section copper alloy sheet excellent in Ni plating characteristics, characterized in that the ratio of Goss orientation density (T1 / T2) is 1.0 to 2.5.   The deformed cross-section copper alloy sheet having excellent Ni plating characteristics according to claim 1, wherein at least one element selected from Ni and Co is contained in an amount of 0.01 to 0.20 mass%. It is a manufacturing method of the unusual cross-section copper alloy plate excellent in the Ni plating characteristic of Claim 1 or 2, Comprising: For forming the small diameter roll part for rough rolling for forming a coarse wall part, and a coarse wall part A rough rolling roll consisting of a rough rolling stepped roll formed with large diameter roll portions aligned in the axial direction and a rough rolling flat roll having a constant radius along the axial direction. A rough rolling process for producing a rough deformed cross-section copper alloy sheet by sandwiching and rolling a copper alloy material, a small diameter roll section for finish rolling for pressing the rough thick section to form the thick section, and A step-roll for finishing rolling in which large-diameter roll portions for finish rolling for pressing the rough thin portion to form the thin portion are formed side by side in the axial direction, and the radius is constant along the axial direction. Finishing consisting of flat rolls for finishing rolling A rolling process for producing a deformed cross-section copper alloy sheet by sandwiching the rough deformed cross-section copper alloy sheet with a rolling roll, and making the width of the flat copper alloy material W1 mm, when the width of the copper alloy sheet and W2mm, irregular cross section copper W2 / W1 is excellent in N i plating characteristics you characterized by rough rolling and finishing rolling process such that 1.01 to 1.2 Manufacturing method of alloy plate.

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