JP2003291240A - Plate laminate, hollow laminate using the plate laminate, and part using the hollow laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate laminate in which a plurality of plates are laminated and bonded, a junction controlling part is formed in a prescribed pattern between a pair of facing plates to form at least one junction controlling part in the laminate, and or more spots of the conjunction controlling part are to be used as openings, a hollow laminate using the plate laminate, and a part using the hollow laminate. <P>SOLUTION: The junction controlling part is formed in the prescribed pattern between the facing plates 12 to form the plate laminate 20. The junction controlling part of the laminate 20 is expanded to form the hollow laminate 10 having a hollow part 11, and a part of the hollow part is used as an opening part to produce the part. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a plurality of plate materials are laminated and bonded, and a bonding inhibiting portion is formed in a predetermined pattern between at least one pair of opposing plate materials. The present invention relates to a plate laminated material having a plurality of planned opening portions, a hollow laminated material using the plate laminated material, and a component using the hollow laminated material.

[0002]

2. Description of the Related Art In computer equipment such as a personal computer, the performance thereof is being rapidly improved, and in order to realize this performance improvement, heat generated by an MPU or the like is efficiently dissipated. Cooler components such as heat exchangers and heat exchangers are needed.

As one of such cooling device parts, for example, a plate type heat pipe as disclosed in JP-A-10-185465 has been proposed. In this plate type heat pipe, a plurality of aluminum alloy materials are laminated and pressure-bonded to each other, and a tunnel having a small diameter meandering on the lamination boundary surface is formed by a roll bond method, and a Freon 134a as a heat pipe working fluid is enclosed in the tunnel. ing. As shown in FIGS. 1 and 2, this plate-type heat pipe 1 is formed by laminating two metal thin plates 3 and 4 and joining them by hot rolling, and applying a pressure-preventing agent in a predetermined pattern in advance and not pressing. The patterned portion of the boundary surface is expanded to form the narrow meandering tunnel 2, and the heat radiation performance is improved by significantly increasing the number of meandering turns per unit width.

[0004]

However, in the cooling device component formed by the conventional roll bonding method as described above, the deformation of the base material is large because the thin metal plates are joined by hot rolling, and the shape of the tunnel is accurate. Not only is it difficult to form well, but there are also problems such as a decrease in bonding strength due to alloying between dissimilar metals on the bonding surface.

In view of the above technical background, the present invention provides a plate laminated material which can be made lighter and thinner, a hollow laminated material using the plate laminated material, and a component using the hollow laminated material. The challenge is to provide.

[0006]

As a first solution to the above-mentioned problems, a plate laminated material of the present invention is a plate laminated material obtained by laminating and joining a plurality of plate materials,
A joining inhibiting portion is formed in a predetermined pattern between at least one pair of opposing plate materials, and
The structure is such that a part or a plurality of parts are planned opening parts. Further, preferably, the laminated joining is configured such that after the joining surfaces of the plate materials are previously subjected to activation treatment, they are brought into contact with each other so that the activation treated surfaces face each other and are overlapped and cold pressed. More preferably, in the activation treatment, glow discharge is performed in an inert gas atmosphere, and sputter etching treatment is performed on the joining surface side of the plate material.

As a second means for solving the above-mentioned problems, the hollow laminated material of the present invention has a constitution in which a hollow portion having a predetermined shape is formed in the joint inhibiting portion of the plate laminated material.

As a third means for solving the above-mentioned problems, the component of the present invention is constituted by using the hollow laminated material having one or a plurality of openings.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 3 is a schematic plan view showing an embodiment of the hollow laminated material of the present invention, in which one elongated tunnel-shaped hollow portion 1 is provided.
An example in which 1 meanders is shown. In the figure, 11a is an opening. FIG. 4 is a schematic sectional view showing an embodiment of the hollow laminated material of the present invention. At least one of the two plate materials 12 and 13, for example, the plate material 12 is provided with a concave portion 16 to form a hollow portion. Here is an example. FIG. 5 is a schematic cross-sectional view showing another embodiment of the hollow laminated material of the present invention. At least one of the two plate materials 12 and 13 such as the plate material 12 is thinned to form the recess 16 therein. An example in which a hollow portion is formed by providing is shown. Figure 6
It is a schematic sectional drawing which shows further another embodiment of the hollow laminated material of this invention, A hollow part is provided by providing the penetration part 17 in the plate material 12 located in the middle among the three plate materials 12, 13, and 14. As shown in FIG. The example formed is shown. FIG. 7 is a schematic cross-sectional view showing still another embodiment of the hollow laminated material of the present invention, which is a two-layer laminated material including plate materials 12 and 14 on one side of the plate material forming the hollow portion. An example configured with is shown below. FIG. 8 is a schematic cross-sectional view showing still another embodiment of the hollow laminated material of the present invention, in which both sides of the plate material forming the hollow portion are composed of plate materials 12 and 14 and plate materials 13 and 15, respectively. An example constituted by a two-layer laminated material is shown. FIG. 9 is a schematic cross-sectional view showing still another embodiment of the hollow laminated material of the present invention, showing a form having a hollow portion having a double structure.

The material of the plate material 12 is not particularly limited as long as it is a material capable of producing a hollow laminated material, and can be appropriately selected and used according to the application of the hollow laminated material. For example, a metal that is solid at room temperature (for example, A
l, Fe, Ni, Cu, Zn, Pd, Ag, Sn, P
t, Au, etc.), alloys containing at least one of these metals (eg, alloys specified in JIS, etc.), or laminates having at least one layer of these metals or alloys (eg, clad material, plating material, vapor deposition). Membrane material etc.) can be applied. Furthermore, the above metals and alloys
It may be an amorphous body. Further, a polymer material or a laminated body in which the above metal or alloy is laminated on the polymer material can also be used. If the application of the hollow laminated material is a heat exchanger or the like, Cu, Al, N, which are metals having excellent thermal conductivity,
i or the like, an alloy containing at least one of these metals, or a laminate having at least one layer of these metals or alloys can be applied.

Examples of alloys defined in JIS include iron alloy steel, structural steel, pressure vessel steel, thin steel sheet,
For Cu-based alloys such as stainless steel, heat-resistant steel, superalloys and magnetic materials, for example, oxygen-free copper, tough pitch copper, phosphorous deoxidized copper, brass, brass, free-cutting brass, tin-containing brass described in JIS H 3100, For Al-based alloys such as Admiralty brass, Naval brass, aluminum bronze, phosphor bronze, and white copper, for example, 1000 series, 2000 series, 3000 series, 5000 described in JIS H4000 or 4160.
Examples of Ni-based alloys such as those based on JIS H4551 include normal carbon nickel, low carbon nickel, nickel-copper alloys, nickel-copper-aluminum-titanium alloys, nickel-molybdenum alloys, nickel-molybdenum alloys. -Chromium alloy, nickel-chromium-iron-molybdenum-copper alloy, nickel-chromium-molybdenum-iron alloy, nickel-iron alloy, nickel-chromium-iron alloy, etc. can be applied.

The thickness of the plate material 12 can be appropriately selected and used depending on the application of the hollow laminated material. For example,
It is 5 to 1000 μm. When it is less than 5 μm, it becomes difficult to manufacture it as a plate material, and when it exceeds 1000 μm, it becomes difficult to manufacture it as a hollow laminated material. Preferably 1
It is 0 to 500 μm. It should be noted that the plate member 12 may be a substantially flat plate and may have some irregularities or curves.

The size and shape of the plate materials 13, 14, 15 such as material and thickness are not particularly limited as long as they can be applied to the plate material 12, and can be appropriately selected and used according to the application of the hollow laminated material. The plate material 12 may be the same as or different from each other, or may be the same as or different from each other.

For example, as shown in FIG. 4, the hollow laminated material of the present invention is coated with a bonding inhibitor or the like so as to form a bonding inhibiting portion having a predetermined pattern on the opposing surfaces of the two plate materials 12 and 13. After performing the activation process, the plate-laminated material 20 is manufactured by laminating and joining, and then cut to a predetermined size if necessary, and the joining-inhibiting portion of the plate-laminating material 20 is blown by a mold expansion tube such as air. Inflated and hollow part 11
Can be manufactured by forming.

The method for producing the hollow laminated material of the present invention will be described below. First, the two-layer laminated material used in FIGS. 7 and 8, that is, the plate materials 12 and 14 and the plate material 13,
A method of manufacturing the laminated material composed of 15 will be described. Figure 1
In the laminated material manufacturing apparatus 50 shown in FIG. 0, the plate material 12 rewound from the rewind reel 62 is activated by the activation processing device 70. Similarly, rewind reel 6
The plate material 14 unwound from No. 4 is activated by the activation processing device 80. The plate members 12 and 14 are pressed against each other so that the activated surfaces come into contact with each other.
Then, the plate laminated material 20 is manufactured by cold pressure welding and laminating and joining, and is wound by the winding roll 66. If necessary,
Instead of the take-up roll unit, a cutting process for cutting into a predetermined size may be provided. In this way, a two-layer laminated material can be manufactured.

The activation process is carried out as follows. That is, the one electrode A (electrode roll 7) in which the plate material 12 put in the activation processing device 70 is grounded
2) The other electrode B (electrode 7) which is brought into contact with and insulated and supported.
4) and the activation treatment by sputter etching are performed. Similarly, the electrode A (electrode roll 8
2) Another electrode B (electrode 8) which is brought into contact with and insulated and supported.
4) and the activation treatment by sputter etching are performed. The activation treatment is carried out by using the electrode A in an extremely low pressure inert gas atmosphere of 10 to 1 × 10 ⁻³ Pa, preferably argon gas.
An alternating current of 1 to 50 MHz is applied between B to cause glow discharge, and the area of the electrode A exposed in the plasma generated by the glow discharge is effectively 1/3 or less of the area of the electrode B. Then, the sputter etching process is performed. When the inert gas pressure is less than 1 × 10 ⁻³ Pa, stable glow discharge is difficult to perform, and high-speed etching is difficult.
If it exceeds a, the activation treatment efficiency will decrease. If the applied alternating current is less than 1 MHz, it is difficult to maintain stable glow discharge and continuous etching is difficult, and if it exceeds 50 MHz, oscillation is likely to occur and the power supply system is complicated, which is not preferable. In addition, the area of the electrode A needs to be smaller than the area of the electrode B in order to perform the etching efficiently.
By setting the ratio to / 3 or less, etching can be performed with sufficient efficiency.

The laminated joining is carried out as follows.
That is, it is possible to achieve laminated bonding by bringing the plate materials 12 and 14 into contact with each other so that the activated surfaces thereof face each other, superposing them, and cold-pressing them with the press-contacting unit 60. Lamination joining at this time can be performed at low temperature and low rolling rate, reducing adverse effects such as microstructural change, alloying, fracture, etc. on plate materials and laminated joints such as in hot pressure welding and high rolling rate pressure welding. Or it can be eliminated. At this time, the temperature T (° C) of the plate material is 0
It is preferable that the temperature is <T ≦ 300 ° C. If the temperature is lower than 0 ° C, a large-scale cooling device is required, and if the temperature exceeds 300 ° C, the joint is alloyed and the joint strength is lowered, which is not preferable. The rolling ratio R (%) is preferably 0.1% ≦ R ≦ 30%. If it is less than 0.1%, sufficient bonding strength cannot be obtained, and if it exceeds 30%, deformation becomes large, which is not preferable in terms of processing accuracy.

Next, the method for manufacturing the hollow laminated material shown in FIG. 3 will be described by taking the case of using a bonding inhibitor as an example. In the hollow laminated material 10 shown in FIG. 3, 11 is a hollow part. The hollow portion 11 can be formed as follows. As shown in FIG. 4, first, two plate materials 1
At least one of the plate materials is coated with a bonding inhibitor so as to form a bonding inhibition portion having a predetermined pattern corresponding to the shape of the hollow portion on the opposing surfaces of 2 and 13. For example, in the laminated material manufacturing apparatus 50 shown in FIG. 10, the plate material 13 is used instead of the plate material 14, and the plate laminated material is used instead of the plate laminated material 20.
By providing a step or a device for printing a bonding inhibitor having a predetermined pattern in front of at least one of 80, that is, between the rewinding reel and the activation processing device, the bonding inhibitor can be applied to the unwound plate material. Can be applied in a predetermined pattern. The application of the bonding inhibitor can be performed by pattern printing or the like. As a bonding inhibitor,
For example, an ink containing colloidal graphite as a main component can be used. The coating thickness of the bonding inhibitor should be such that it does not disappear due to the activation treatment applied afterwards.
Alternatively, it may be set such that the joining suppressing portion is not joined at the time of stacking and joining.

Thereafter, the opposing surfaces of the plate materials 12 and 13 are activated by the activation processing devices 70 and 80, and the two surfaces are brought into contact with each other so that the activated surfaces of the plate materials 12 and 13 face each other. The plate laminated material 20 can be manufactured by stacking and laminating them by cold pressure welding with the pressure welding unit 60. By laminating and joining in this manner, only the portion to which the joining inhibitor is not attached is pressure-contacted, and the joining inhibitor is formed to the portion to which the joining inhibitor is attached. Then, if necessary, the plate laminated material 20 having the joining inhibiting portion of the present invention can be manufactured by cutting it into a predetermined size. Further, a through hole penetrating the front and back surfaces may be provided in the joint portion of the plate laminated material 20. The printing process and the device of the bonding inhibitor may be installed after the activation processing device, that is, between the activation processing device and the pressure contact unit.

The hollow laminated material of the present invention is obtained by cutting out the plate laminated material produced as described above, if necessary.
Compressed air or the like is sent from the opening 11a to the joint-inhibiting portion of the plate laminated material, and at least one surface of the plate material is inflated by using a mold or the like if necessary.
In this way, the hollow portion 11 is formed. Further, if necessary, the inside of the hollow portion may be washed to remove an excessive bonding inhibitor. As described above, the hollow laminated material 10 having the hollow portion 11 of the present invention can be manufactured. Note that the plurality of openings may be formed after the expansion tube, or may have a predetermined opening in the plate laminated material before the expansion tube.

Laminated joining can also be achieved by replacing the above pressure contact unit with a press working device or the like. Further, after printing the bonding inhibitor or after the sputter etching treatment, it is possible to cut a plate material or the like into a predetermined size, laminate the same, and press the plate material. Further, it is also possible to first cut a plate material or the like into a predetermined size, perform sputter etching treatment / bonding inhibitor printing, and stack and press. In the case where the sputter etching process is performed after cutting, the plate member may be the one electrode A which is insulated and supported, and the activation process may be performed with the other electrode B grounded.

In the laminated material manufacturing apparatus 50 shown in FIG. 10, the hollow laminated material shown in FIG. 4 is provided with a non-pressure contact portion such as a recess corresponding to a predetermined pattern of the joint inhibition portion on the pressure contact roll surface of the pressure contact unit 60. It is also possible to manufacture the plate laminated material 20 by using the above method and to inflate the plate laminated material 20. In addition, you may use a joint inhibitor etc. together.

In the hollow laminated material as shown in FIG. 5, at least one of the plate materials is thinned in a predetermined pattern to form a concave portion, thereby forming a joint inhibiting portion. That is, a plate material on which a thin portion is formed in advance is loaded into the laminated material manufacturing apparatus shown in FIG. 10 to perform laminated joining, or a thin-wall processing step or apparatus is provided between the rewind reel and the activation processing apparatus. Thus, the rewound plate material can be thin-walled and then laminated and joined to manufacture a hollow laminated material. Further, the hollow laminated material produced in this manner may be subjected to processing such as an expansion tube if necessary.

The hollow laminated material as shown in FIG. 6 forms a hollow portion by closing a through hole of a plate material having a predetermined pattern of through holes with another plate material.
This through hole serves as a joint inhibiting portion. Further, the hollow laminated material produced in this manner may be subjected to processing such as an expansion tube if necessary.

The hollow laminated material as shown in FIGS.
In the laminated material manufacturing apparatus 50 shown in FIG.
It can be manufactured by using a two-layer plate laminated material 20 in place of 2, 13. For example, in the hollow laminated material as shown in FIG. 8, as the laminated materials used on both sides of the hollow portion, aluminum plates 14 and 1 are provided on copper plates 12 and 13, respectively.
You may use the laminated material of 2 layers which laminated | stacked and joined 5. With this, when a liquid or gas such as water is present in the hollow portion, a copper plate is used on the inside to enhance corrosion resistance, and a copper-aluminum laminated material is used to achieve weight reduction or specific strength compared to the case where only the copper plate is used. It can be raised. Further, the thickness of the copper plate is preferably 0.01 to 0.1 mm. 0.0
If it is less than 1 mm, sufficient corrosion resistance cannot be obtained, and if it is thicker than 0.1 mm, it becomes too heavy and it is not necessary to laminate and reinforce from the viewpoint of strength. The thickness of the aluminum plate is preferably 0.05-1.0 mm.
If it is less than 0.05 mm, sufficient strength cannot be obtained and 1.0 m
If it is thicker than m, it becomes too heavy, which is not preferable.

In the hollow laminated material of the present invention, as shown in FIG. 9, a part of the hollow portion may have a multiple structure. Such a hollow part may be a multi-stage expansion tube in which the inner hollow part is expanded and then the outer hollow part is expanded, or simultaneously expanded. At this time, it can be achieved by making the inflation tube pressure of the inner hollow portion higher than that of the outer portion. The hollow portions may have the same shape or different shapes, and the inner and outer openings may be provided at the same location or different locations.

Furthermore, the component of the present invention uses a hollow laminated material having openings at one or a plurality of locations.
In the case of a component having a plurality of openings, it is possible to have a form in which the hollow part is in partial communication or a non-communication form. For example, a pipe having two openings and communicating with each other inside the hollow portion can be used as an integrated pipe or the like. By using such an integrated pipe, it is possible to suppress the vibration applied to the portion forming the hollow portion as compared with the normal pipe. Those having a hollow portion having a multiple structure can also be used for heat exchanger parts and the like. Moreover, even if it has two openings, it can be used for a two-system plate heat pipe or the like that is not in communication inside the hollow portion. It should be noted that the number of parts having one opening is one
It can be used for a plate type heat pipe of a system.

In the plate-type heat pipe, after the hollow laminated material is prepared, a predetermined amount of the heat pipe actuating body is enclosed through the opening 11a of the hollow laminated material, and the inside is subjected to a predetermined pressure, for example, a vacuum state, a reduced pressure state or a large pressure. It can be manufactured by setting the pressure to about atmospheric pressure and sealing the opening using a method such as welding. As the heat pipe actuating body, a liquid that is easy to handle, particularly water, pure water or ultrapure water can be used from the viewpoint of dechlorofluorocarbon conversion. In addition, in the heat pipe manufactured in this way, since the lead-in portion of the heat pipe actuating body due to the capillary force can be formed on both sides in the width direction inside the hollow portion 11, the heat dissipation performance is not affected by the holding posture. It is possible to demonstrate.

[0029]

Embodiments Embodiments will be described below with reference to the drawings.
As the plate materials 12 and 13, 100 μm-thick oxygen-free copper plates were used. Ink is applied to the oxygen-free copper plate in a predetermined pattern and set in the laminated material manufacturing apparatus 50 together with the oxygen-free copper plate, and the activation processing units 70 and 80 in the vacuum tank 52 are set.
Were activated by the sputter etching method. Next, the pressure-bonding unit 60 was used to laminate the activation-treated oxygen-free copper plates so that the activation-treated surfaces were superposed on each other, and were pressure-bonded to each other to produce a plate laminated material 20.
Next, the plate laminated material 20 is cut into a predetermined size, and 2
A hollow laminated material 10 in which two openings are communicated with each other was manufactured by forming openings to be opened at one location and performing an air expansion tube. Further, a through hole was partially provided in the joint portion 18 of the hollow laminated material 10 to manufacture an integrated pipe.

[0030]

As described above, the plate laminated material of the present invention is a plate laminated material formed by laminating and joining a plurality of plate materials, and has a predetermined pattern between at least one pair of opposing plate materials. To form a joint deterrent
One or more places of the joining inhibiting portion are the planned opening portions. Further, in the hollow laminate of the present invention, the joint inhibiting portion is a hollow portion. Furthermore, the component of the present invention uses a hollow laminated material having openings at one or more locations. For this reason, it is possible to bond thin metal plates at a low rolling rate without adversely affecting the bonded part, so that it is possible to realize high precision of shape and weight reduction, and it is suitable for various parts. .

[Brief description of drawings]

FIG. 1 is an example of a schematic plan view of a conventional plate-type heat pipe.

FIG. 2 is an example of a schematic cross-section of a conventional plate heat pipe.

FIG. 3 is an embodiment of a schematic plan view of a hollow laminate of the present invention.

FIG. 4 is an embodiment of a schematic cross-sectional view of a hollow laminate of the present invention.

FIG. 5 is another embodiment of the schematic cross-sectional view of the hollow laminate according to the present invention.

FIG. 6 is still another embodiment of the schematic cross-sectional view of the hollow laminate of the present invention.

FIG. 7 is another embodiment of the schematic cross-sectional view of the hollow laminate of the present invention.

FIG. 8 is still another embodiment of the schematic cross-sectional view of the hollow laminate according to the present invention.

FIG. 9 is another embodiment of the schematic cross-sectional view of the hollow laminate according to the present invention.

FIG. 10 is an embodiment of a schematic cross-sectional view of a plate laminated material manufacturing apparatus used in the present invention.

[Explanation of symbols]

1 hollow body 2 tunnel 3 metal sheets 4 metal sheets 5 joints 6 Expansion tube 10 Hollow laminated material 11 Hollow part (tunnel) 11a opening 12 Plate material 13 Plate material 14 Plate material 15 Plate material 16 recess 17 Through hole 18 joints 19 joints 20 plate laminated material 21 Hollow part (tunnel) 50 Laminated material manufacturing equipment 52 vacuum chamber 60 pressure welding unit 62 Rewind reel 64 rewind reel 66 winding roll 70 Activation processing device 72 electrode roll 74 electrodes 80 Activation processor 82 electrode roll 84 electrodes A electrode A B electrode B

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Claims (5)

[Claims] 1. A plate laminated material obtained by laminating and joining a plurality of plate materials, wherein a joint inhibiting portion is formed in a predetermined pattern between at least one pair of opposing plate materials. A plate laminated material characterized in that one or a plurality of places are to be openings. 2. The laminated bonding is characterized in that after the bonding surfaces of the plate materials are preliminarily activated, they are brought into contact with each other so that the activation surfaces face each other, and they are superposed and cold-pressed. The plate laminated material according to claim 1. 3. The plate according to claim 2, wherein in the activation treatment, glow discharge is performed in an inert gas atmosphere, and sputter etching treatment is performed on each of the joining surface sides of the plate material. Laminated material. 4. A hollow laminated material, characterized in that a hollow portion having a predetermined shape is formed in a joint inhibiting portion of the plate laminated material. 5. A component comprising the hollow laminated material having openings at one or a plurality of locations.