JPH1171697A - Plated product as well as its production and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain plated products in such a manner that a thin layer metal is made hardly peelable from a material surface by providing the products with a material provided with plural pieces of recesses having a specific size and depth and having anchor parts on the surface and the thin layer metal covering the surface of this material and partly infiltrating the recesses. SOLUTION: The plated products are the products formed by plating the surface of the metallic or nometallic material and the production thereof is executed as follows: The front end of a needle or a drawn wire sized 3 to 95 μm is pricked to the surface of the material at an angle of <90 deg. or >=45 deg. with this surface and is then removed. As a result, many pieces of the recesses having the size of openings of 5 to 10 μm and depth of 0.2d to d (d: the size μm of the openings of the recesses) and having the anchor parts are formed on the surface of the material. The surface inclusive of the recesses of the material is thereafter coated with the thin layer metal. The anchor parts refer to the recesses (a) of the parts intruding to the counter-opening side from the line drawn from the edges of the openings of the recesses perpendicularly to the material surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product obtained by plating a surface of a metal or nonmetal material, a method of manufacturing the same, and an apparatus for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, when plating the surface of a metallic or non-metallic material, a fine depression is formed on the surface of the material before plating in order to enhance the adhesion between the material and a thin metal (plating). The method of forming the pits is to project fine powder particles onto the material, or to use a molecular-level substance or fine particles that are easily soluble in a solution beforehand. Some are embedded or mixed near the surface so that the material or particles are dissolved in the solution before plating.

[0003]

However, in the former method of forming such a depression, since particles having a size of several tens of μm to several hundreds of μm are used as fine powder particles, the fine depression cannot be formed. It is formed by plastic deformation or cutting due to collision of powder. That is, as shown in FIG. 4 (a), a depression mainly formed by plastic deformation caused by the particles colliding with the surface of the material at substantially right angles, and as shown in FIG. There is a dent mainly formed by cutting which is formed by colliding at an acute incident angle with respect to the pit. However, these pits have an open shape like a meteorite hitting the planet, so if this surface is plated, the adhesion of the thin metal to the material surface is limited to that of the thin metal itself. It is determined by the adhesion strength, the resistance due to the unevenness of the surface of the material to be coated with the thin metal, and the width of the adhesion area. Therefore, when a force acts in a direction parallel to the material surface, not only the adhesion force of the thin-layer metal itself but also the resistance due to the unevenness of the material surface and the adhesion area of the thin-layer metal increase. Although a resistance (peeling resistance) corresponding to the resistance is generated, when a force acts on the surface of the material almost at right angles, it is only due to the adhesion force of the thin metal itself, and the resistance due to the unevenness of the material surface The area of the contact area does not contribute much, and as a result, when a large mechanical force such as a blow acts, a minute peeling phenomenon occurs at that part, and further, when repeated force acts, the peeling eventually occurs. There is a problem that the thin metal layer grows and peels off from the material.

[0004] On the other hand, in the latter, the size of the fine pits on the surface of the material is determined by the size of the embedded substance or particle, but is as small as 2 to 3 µm or less. The size of the opening is shown in FIG.
As shown in FIG. 5, some of the pits are smaller than the size of the pits. Therefore, when plating, the thin-layer metal is less likely to enter the pits, and as shown in FIG. Only closes the top opening of the
The adhesion of the thin-layer metal to the material surface is only due to the adhesive force of the thin-layer metal itself. As a result, when a large mechanical force is applied, particularly when a force is applied almost at right angles to the surface of the material, However, there was a problem that the part was easily peeled off. The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a plated product, a method of manufacturing the same, and an apparatus for manufacturing the same in which the thin-layer metal is less likely to peel off from the material surface than conventional plating. To provide.

[0005]

In order to achieve the above object, a plated product according to the first aspect of the present invention is a product formed by plating a surface of a metal or nonmetal material, and the size of the opening is small. 5-100 μm, depth 0.2d-d
(D: the size of the opening of the depression μm), and a material provided with a large number of depressions having an anchor portion on the surface, and a thin-layer metal covering the surface of the material and partially penetrating the depression. And characterized in that:

A method of manufacturing a plated product according to a third aspect of the present invention is a method of manufacturing a product formed by plating a surface of a metal or non-metallic material.
The tip of a drawn wire of about 95 μm is pierced into the surface of the material at an angle of less than 90 ° or 45 ° or more with respect to the surface, and then withdrawn.
A plurality of depressions having a depth of 0.2 μm and a depth of 0.2 d to d (d: the size of the opening of the depression μm) and having an anchor portion are formed, and then the surface including the depression of the material having the depression formed thereon is thinned. It is characterized by being coated with a layer metal.

If the size of the opening of the depression is less than 5 μm, the bonding force between the molecules of the thin-layer metal becomes larger than the bonding force between the molecules of the thin-layer metal and the molecules of the material or the gravity, and If the metal cannot enter into the dent of the material and the size of the opening of the dent exceeds 100 μm, the thin layer metal will enter into the dent. The state is close to the state of being covered without any depression, and the same result is obtained according to the conventional method, and the adhesion is also close to the conventional method. Further, if the depth of the depression is less than 0.2 times the size of the opening, only the same peeling resistance as the conventional method is not improved, and if the depth exceeds the size of the opening, It takes energy to pierce the needle etc. into the material,
The effect is smaller than that. As used herein, the term “anchor portion” refers to a recess a at a portion which enters the opposite side of the opening from a line drawn perpendicular to the material surface from the edge of the opening of the recess, as shown in FIG.

[0008]

EXAMPLES In order to confirm the effect of the present invention, 10 × 60
After roughening the surface of a × 1 (mm) aluminum plate by various methods, the roughened surface is plated with copper to form a large number of test pieces, and a swing fatigue test ( (Bending repetition test) was performed 10 ⁴ times, and in that case, it was checked whether or not the coated thin metal had peeled off. The results are shown in Table 1.

[0009]

[Table 1]

[0010] As shown in Table 1, in the test pieces roughened by chemical etching, some peeling occurred in 60% or more of all the test pieces. Further, in a test piece roughened to a surface roughness of 55 μm by projecting a 0.8 mm shot at a speed of 70 m / s, some peeling occurred in 50% or more of all the test pieces. Further, in a test piece roughened to a surface roughness of 8 μm by projecting a shot having a size of 0.2 mm at a speed of 30 m / s, some peeling occurred in 40% or more of all the test pieces. On the other hand, 9
Under an angle of less than 0 degrees or 45 degrees or more, variously change the number per unit area and pierce the needle on the aluminum plate surface,
After forming a depression (opening 10 μm, depth 5 μm) on the surface of the aluminum plate, a test piece was prepared by plating.

In this case, in the test piece having the number of depressions having the anchor portion of 10,000 / cm ² , the peeled portion is 10% or less of the total number of the test pieces, and the number of the depressions having the anchor portion is less than 10%. However, in 250,000 test pieces / cm ² , 1% or less of all the test pieces peeled off. Therefore, it can be seen from Table 1 that when a large number of depressions having anchor portions are provided on the surface of the material as in the present invention, the thin metal layer is difficult to peel off. In a test piece having 5,000 depressions / cm ² having an anchor portion, the peeled sample is 35% or more of the total number of test pieces, which is practical. When the size of the opening of the depression is dμm, the number of the depressions is not practical if the piercing pitch of the needle exceeds 10 d. There is a risk of destroying the part.

Next, an embodiment of an apparatus for piercing a surface of a material with a needle to roughen the surface will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, a support mechanism 2 that can fix the material M and move the material M in a horizontal plane is mounted in the cavity of the C-shaped column 1.
At the position just above the support mechanism 2 in the column 1, a depression forming mechanism 3 is mounted. The dent forming mechanism 3 includes a needle 4 or a drawn wire having a thickness of 3 to 95 μm,
The base of the ~ 95 µm drawn wire is 90
Holding means 5 for holding at an angle of less than 45 degrees or more than 45 degrees
And a downward cylinder 7 as an elevating means for elevating and lowering the holding means 5 via a guide member 6. The cylinder 7 is mounted on the upper part of the column 1 via a mounting member 8. The cylinder 7 is electrically connected to a controller 9 for detecting a reaction force applied to the cylinder 7 and issuing a command for controlling the descending force.

In order to roughen the surface of the material M of the plated product by using the apparatus configured as described above, the material M is fixed by the support mechanism 2, and then the cylinder 7 is extended and the needle 4 is held. The means 5 and the like are lowered, and the needle 4 pierces the surface of the material M. Next, the cylinder 7 is contracted to operate the needle 4,
By raising the holding means 5 and the like, the needle 4 is extracted from the material, and a depression having a large number of anchor portions is provided on the surface of the material M. Thereafter, a material M having a depression on the surface is plated to obtain a desired plated product.

In the above embodiment, the needles 4 and the like are fixedly mounted on the holding means 5, but as shown in FIG. And the needles 4 and the like may be lifted and lowered independently of each other. Alternatively, the individual needles 4 and the like may be mounted on a holding means having a rotation function and moved up and down while rotating. It can pierce the material M smoothly.

[0015]

As is clear from the above description, according to the present invention, the size of the opening is 5 to 100 μm and the depth is 0.2 d to d (d:
A material having a plurality of depressions having an anchor portion on the surface thereof, and a thin metal covering the surface of the material and partially penetrating into the depressions. Since it is a plated product provided, it has excellent effects such as that the thin-layer metal is less likely to peel off from the material surface than conventional plating.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view showing a first embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 3 is a partially sectional front view showing a second embodiment of the present invention.

FIG. 4 is a schematic front view for explaining a conventional method of roughening a material surface.

FIG. 5 is a schematic front view for explaining a conventional method of roughening a material surface.

FIG. 6 is a schematic front view illustrating a depression formed by the present invention.

[Explanation of symbols]

 4 Needle 5 Holding means 7 Cylinder 9 Controller

Claims (6)

[Claims] 1. A product formed by plating a surface of a metal or nonmetal material, wherein the size of an opening is 5 to 100 μm.
m, depth 0.2d-d (d: size μ of the opening of the depression)
m), comprising a material having a plurality of depressions having an anchor portion on the surface thereof, and a thin-layer metal covering the surface of the material and partially penetrating into the depressions. Plated products. 2. A plated product according to claim 1, wherein the recess is 1 cm ² per ^{10 6 / d 2 ~10 8 /} 4d 2 (d:
A plated product characterized in that the number of depression openings is μm). 3. A method for producing a product formed by plating a surface of a metal or non-metallic material, comprising:
A tip of a drawn wire of about 95 μm is pierced into the surface of the material at an angle of less than 90 degrees or 45 degrees or more with respect to the surface, and then withdrawn.
A plurality of depressions having a depth of 0.2 μm to 100 μm (d: opening size of depressions μm) and having an anchor portion are formed, and then the surface of the material having the depressions including the depressions is thinned. A method for producing a plated product, characterized by being coated with a layer metal. 4. The method for manufacturing a plated article according to claim 3, wherein said recess is 1 cm ² per ^{10 6 / d 2 ~10 8/} 4
A method for producing a plated product, wherein the number is d ² (d: the size of the opening of the depression is μm). 5. An apparatus for producing a product formed by plating a surface of a metal or non-metallic material, comprising:
９５95 μm drawn wire and this needle or 3 to 95 μm thick
A plated product comprising: holding means for holding the base of the drawn wire at an angle of less than 90 degrees or 45 degrees or more with respect to the surface of the material; and elevating means for elevating the holding means. Manufacturing equipment. 6. An apparatus for manufacturing a product formed by plating a surface of a metal or non-metal material, comprising a needle or a thickness of 3 mm.
９５95 μm drawn wire and this needle or 3 to 95 μm thick
Holding means for holding the base of the drawn wire at an angle of less than 90 degrees or 45 degrees or more with respect to the material, elevating means for elevating the holding means, and detecting a reaction force applied to the elevating means And a controller for issuing a command for controlling the descending force.