TW201437601A - Method for joining resin member with metal member, and liquid-cooled jacket manufacturing method - Google Patents

Abstract

Provided are a method for joining a resin member with a metal member which allows them to be joined easily while achieving a sufficient level of joint strength, and a liquid-cooled jacket manufacturing method. The joining method is characterized in that after a resin member (2) and a metal member (3) are overlapped, a rotating friction stir tool (G) is pressed from the metal member (3) side and the two members are joined by the heat of friction. According to said joining method, after the resin is melted by the heat of friction, the resin member (2) fuses to the metal member (3) as the temperature drops, so the members can be joined easily and firmly.

Description

Liquid cooling jacket

The present invention relates to a method of joining a resin member and a metal member, and a liquid cooling jacket having a resin member and a metal member, and a method of manufacturing the same.

A wide range of fields such as the automotive industry and the industrial machine industry are seeking technologies for subsequently or mechanically fixing a resin member and a metal member. As a method of joining a relatively simple resin member and a metal member, there is a case where a bonding material is used. On the basis of the material, there is a problem that sufficient strength cannot be obtained. Therefore, in the technique disclosed in Patent Document 1, after a metal member made of an aluminum alloy is inserted into a mold in advance, a resin plastic substance is emitted to the mold to join the two members.

[First technical literature] [Patent Literature]

[Patent Document 1] JP-A-2007-50630

However, when the above-described conventional joining method is used, there are problems in that the molding of the mold, demolding, and the like are time consuming and laborious, and the joining work is complicated. Further, in the conventional joining method, the resin is formed while being injection molded. Engaging with the metal member encounters a problem that the existing resin member cannot be joined. That is, the conventional joining method lacks the freedom of design.

From the above viewpoints, an object of the present invention is to provide a method of joining a resin member and a metal member which can be easily joined with sufficient joint strength, and a method for producing a liquid cooling jacket.

In order to solve the above problem, the present invention is characterized in that after the resin member and the metal member are superposed, the rotating member that is rotated from the side of the metal member is melted by friction heat to bond the resin member and the metal member.

If this joining method is used, it is produced on the surface of the friction-heat-melting resin member of the metal member, and is welded and firmly joined to the metal member at the time of hardening again. That is, it is possible to easily join the two members only by pressing the rotating rotating tool. Further, according to this joining method, since the existing resin member and the metal member can be joined, and the rotary tool can be pressed only for a desired portion, the degree of freedom in design can be improved.

Further, it is preferable that the rotating tool is a friction stir rotating tool, and it is preferable that the end surface of the friction stir rotating device is pressed against the metal member. If this joining method is used, the joining accuracy can be improved because the metal member can be pressed evenly.

Further, the metal member is preferably made of aluminum or an aluminum alloy, and it is preferable that the outer diameter of the shoulder portion of the friction stirring rotary tool is set to be 2 to 5 times the thickness of the metal member. If this joining method is used, the joint strength of the two members can be improved. Once the outer diameter of the shoulder is less than 2 of the thickness of the metal member If the outer diameter of the shoulder is greater than 5 times the thickness of the metal member, the friction stirrer device is overloaded, which is not recommended.

Further, the metal member is preferably made of aluminum or an aluminum alloy, and it is preferable to set the press-in depth of the friction stirrer to 5% to 20% of the thickness of the metal member. If this joining method is used, the joint strength of the two members can be improved. When the press-in depth of the friction stir rotating tool is less than 5% of the thickness of the metal member, the joint strength is weak; on the other hand, once the press-in depth of the friction stir rotating tool is greater than 20% of the thickness of the metal member, The friction stirrer is too heavy and is not recommended.

Moreover, it is preferable that the rotating tool is a frictional engagement rotating tool, and it is preferable that the circumferential surface of the frictional joining rotary tool is pressed against the metal member. According to this joining method, the resin member and the metal member can be joined by the frictional heat of the rotating friction engagement rotating tool and the metal member.

Further, the metal member is preferably made of aluminum or an aluminum alloy, and it is preferred that the metal member is subjected to an etching treatment or an anodizing treatment before bonding to form irregularities on the surface. If this joining method is used, the molten resin enters the concave portion formed on the surface of the metal member, and can be joined more strongly.

Further, the present invention is characterized in that, in a resin case body in which a heat transfer fluid flows and a part of the recessed portion having an opening is placed, a metal package in which the opening of the recessed portion is mounted is placed, and the package is obtained from the package. The body side presses the rotating rotating device, and a part of the sleeve body is melted by friction heat to join the sleeve body and the package body, wherein the heat transfer fluid transports heat generated by the heat generating body to the outside.

If the manufacturing method of the liquid cooling jacket is used, it is produced in metal The frictional heat of the package melts the resin of the sleeve body and is welded and firmly joined to the package when it is hardened again. That is, the sleeve body and the package body can be joined only by pressing the rotary tool, so that the liquid cooling jacket can be easily manufactured.

Further, it is preferable that the rotating tool is wound around the inner side of the peripheral edge portion of the package to engage the cover body and the package. Thereby, the opening of the cover body can be more reliably packaged, and the workability of joining can be improved.

When the joining method of the resin member and the metal member according to the present invention is used, the resin member and the metal member can be easily joined with sufficient joint strength. Further, when the method for producing a liquid cooling jacket according to the present invention is used, a liquid cooling jacket having sufficient joint strength can be easily produced.

1‧‧‧Composite components

2‧‧‧Resin components

3‧‧‧Metal components (aluminum alloy components)

10‧‧‧Set body (resin member)

11‧‧‧ recess

12‧‧‧ openings

12a‧‧‧ Opening around the edge

13‧‧‧ bottom wall

14‧‧‧Wall

14a‧‧‧ wall

15‧‧ ‧ step surface

16‧‧‧through holes

30‧‧‧Package (aluminum alloy component)

30a‧‧‧ peripheral edge

31‧‧‧ Cover Section

32‧‧‧Fins

33‧‧‧Flow

34‧‧‧Flow Collection Department

40‧‧‧ by the Ministry

54a‧‧‧Starting

54b‧‧‧End

F‧‧‧Rotary appliances (rotary tools for frictional engagement)

F1‧‧‧Rotary axis

F2‧‧‧ appliance body

F3‧‧‧ Weekly

G‧‧‧Rotary appliance (spinner for friction stir)

G1‧‧‧ shoulder

G2‧‧‧Department

G11‧‧ vortex

G12‧‧‧Circular Department

P‧‧‧ liquid cold cover

Q‧‧‧ Rotation Center

W‧‧‧Plasticized area

Fig. 1 is a perspective view showing a method of joining a resin member and a metal member according to the first embodiment.

Fig. 2 (a) and (b) are a cross-sectional view and a bottom view showing a friction stirring rotary tool.

Fig. 3 is an exploded perspective view showing the liquid cooling jacket of the second embodiment.

Fig. 4 is a perspective view showing the package of the liquid cooling jacket according to the second embodiment as viewed from below.

Fig. 5 (a) and (b) are plan views showing the beginning and the end of the friction stirring step according to the second embodiment.

Fig. 6 is a sectional view taken along line I-I of Fig. 5(a).

Fig. 7 is a cross-sectional view showing a modification of the friction stirring step of the second embodiment.

Fig. 8 is a perspective view showing a method of joining a resin member and a metal member according to a third embodiment.

Fig. 9 is a perspective view for explaining the embodiment.

[Best form for implementing the invention]

[First Embodiment]

The first aspect of the present invention will be described in detail with reference to the drawings. As shown in Fig. 1, in the present embodiment, a case where the composite member 1 is formed by joining the plate-shaped resin member 2 and the plate-shaped metal member 3 will be described as an example.

The joining method of the resin member and the metal member according to the present embodiment (hereinafter simply referred to as "joining method") includes a superimposing step of superposing the resin member 2 and the metal member 3, and a friction stir step of rubbing the metal member 3 Stir.

First, in the superposition step, as shown in FIG. 1, the metal member 3 is placed on the resin member 2, and a part of the upper surface of the resin member 2 is brought into contact with a part of the lower surface of the metal member 3. In the present embodiment, the resin member 2 is a plate-shaped member made of PET (polyethylene terephthalate). The material of the resin member 2 is not limited to PET, and may be appropriately selected from thermoplastic resins depending on the application.

In the present embodiment, the metal member 3 is made of aluminum alloy (A5052-O) Plate-shaped member. The metal member 3 can be appropriately selected from metal materials which can be frictionally stirred, such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy, etc., depending on the application. Hereinafter, the metal member 3 is also referred to as "aluminum alloy member 3"

Next, in the friction stir step, as shown in Fig. 2 (a) and (b), the rotating device G (hereinafter also referred to as a friction stir rotating tool G) is used from the upper surface of the aluminum alloy member 3. The aluminum alloy member 3 is frictionally stirred on the side. The friction stir rotating tool G has a substantially cylindrical shoulder portion G1 and a pin portion G2 that protrudes from a lower surface (end surface) of the shoulder portion G1. The friction stir rotating tool G is made of a metal material that is harder than the aluminum alloy member 3 such as tool steel. As shown in FIG. 2(b), the pin portion G2 has a vortex portion G11 having a spiral shape in plan view, and a circular portion G12 formed in a center in the shoulder portion G1 and having a circular shape in plan view. The shape, size, and the like of the shoulder portion G1 and the pin portion G2 can be appropriately set in accordance with the object to be joined. Further, a friction stir rotating tool in which the pin portion G2 is not provided and the lower surface (end surface) of the shoulder portion G1 is flat may be used.

In the friction stir step, after the resin member 2 and the aluminum alloy member 3 are fixed and cannot be moved, the lower surface (end surface) of the friction stirrer G is opposed to the aluminum alloy member 3, and the aluminum alloy member 3 is placed on the aluminum alloy member 3. The arbitrary position of the upper surface is pressed into a predetermined depth, and the friction stir rotating tool G is relatively moved along the longitudinal direction of the aluminum alloy member 3. The number of rotations (rotation speed) and the engagement speed (feed speed) of the friction stir rotating tool G are not particularly limited, and are, for example, moved at a number of revolutions of 1000 rpm and a joint speed of 300 mm/min.

On the upper surface of the aluminum alloy member 3, the plasticized region W is formed along the movement locus of the friction stirring rotating tool G. Here, the "plasticized region" includes both of the following: the frictional heat of the rotating tool G due to friction stir In a state where it is heated and actually plasticized, and the friction stirrable rotating tool G has passed, it returns to a normal temperature state. In the present embodiment, the plasticized region W is frictionally stirred at a depth of penetration that does not contact the resin member 2. Further, the hair-like projections generated on the upper surface of the aluminum alloy member 3 by friction stir are preferably cut off by cutting.

When the above-described joining method is used, the rotating friction stirrer G is pressed and moved from above the aluminum alloy member 3 to the overlapping portion of the resin member 2 and the aluminum alloy member 3, whereby the resin is melted by the friction heat thereof. The resin of the surface (surface portion) of the member 2 is hardened again as the temperature is lowered. Thereby, the resin member 2 is welded to the lower surface of the aluminum alloy member 3 and joined. In other words, in the above-described conventional method, the injection molding of the resin and the joining of the resin member and the aluminum alloy member can be performed by simply pressing the friction stir rotating tool G. However, it is impossible to join the existing members. However, if the joining method according to the present embodiment is used, the existing resin member 2 and the aluminum alloy member 3 can be joined.

Further, since the friction stirrer rotating tool G is pressed only for the desired joint portion, the degree of freedom in design can be improved. In addition, by pressing the end surface of the friction stirrer G to the aluminum alloy member 3, the metal member can be pressed evenly, and the joining accuracy can be improved. Further, the plasticized region W formed by friction stir may be joined to the resin member 2, but as shown in the present embodiment, even if the plasticized region W is shallow to the extent that the resin member 2 is not contacted For friction stir, it is still possible to join.

Moreover, it is preferable to set the outer diameter of the shoulder G1 of the friction stirring rotating tool G to 2 to 5 times the thickness of the aluminum alloy member 3. In addition, it is better The press-in depth of the friction stir rotating tool G (the press-in length from the upper surface of the aluminum alloy member 3 to the lower surface of the shoulder portion G1) is set to 5% to 20% of the thickness of the aluminum alloy member 3. By setting the outer diameter of the shoulder portion G1 or the press-in depth of the friction stir rotating tool G as described above, the joint strength can be improved, which will be described later.

Moreover, it is preferable to apply an etching treatment or an oxygen aluminum (anodizing) treatment to at least the contact surface of the aluminum alloy member 3 with the resin member 2, and after the unevenness is formed on the contact surface, the above-described friction stirring step is performed. According to this joining method, since the molten resin enters the concave portion of the aluminum alloy member 3 to increase the contact area of the resin member 2 and the aluminum alloy member 3, a stronger joint can be obtained.

The etching treatment is, for example, an etchant prepared by immersing the aluminum alloy member 3 in an aqueous solution of aluminum chloride hexahydrate. On the other hand, the oxyaluminum treatment is carried out by electrochemically oxidizing the surface of the aluminum alloy member 3 by using electrolytic solution of dilute sulfuric acid or oxalic acid and using an aluminum alloy as an anode.

In addition, the surface treatment for making the surface of the aluminum alloy member 3 an uneven surface is not limited to the etching treatment or the oxyaluminum treatment, and for example, it may be roughened by polishing the surface with a wire brush or the like. Forming irregularities.

[Second embodiment]

Next, a second embodiment of the present invention will be described. In the present embodiment, as shown in Fig. 3, a case where the liquid-cooling jacket P of the package body 30 made of resin and the metal body (made of the aluminum alloy in this embodiment) is manufactured is exemplified. To illustrate. The liquid cooling jacket P is, for example, used for cooling of a heat generating body such as a CPU (central processing unit).

As shown in Figure 3, the liquid cooling jacket P is made up of: A casing body having a portion in which a water (not shown) for conveying a fluid flows and a portion having an open recess 11 is formed, and a package body 30 for fixing the opening portion 12 of the package recess 11 is formed, wherein the heat transfer fluid is to be a heat generating body. The heat generated by the CPU (not shown) is sent to the outside.

The liquid cooling jacket P is configured such that a CPU (not shown) is attached to the center of the cover portion 31 on the side above the thermal diffusion sheet (not shown), and the CPU is mounted. The cooling water is circulated in the liquid cooling jacket P to obtain heat generated by the CPU and exchange heat with the cooling water flowing inside. Thereby, the cover portion 31 transmits the heat taken from the CPU to the cooling water, and as a result, the CPU is efficiently cooled. Further, the heat diffusion sheet is a sheet material for efficiently transferring the heat of the CPU to the lid portion 31, and is formed of, for example, a metal having high heat transfer property such as copper.

The sleeve body 10 is a shallow-bottomed box-shaped body that is open on one side (upper side in the present embodiment), has a concave portion 11 formed therein, and has a bottom wall 13 and a peripheral wall 14. In the present embodiment, the sleeve body 10 is formed of a thermoplastic resin. Thereby, the weight of the liquid cooling jacket P is achieved and it is easy to handle.

At the edge portion 12a around the opening of the recess 11 of the sleeve body 10, a step surface 15 is formed at a position downward from the upper surface of the peripheral wall 14. The distance (depth) from the upper surface of the peripheral wall 14 to the step surface 15 is the same as the thickness of the lid portion 31 of the package 30 to be described later. Above the step surface 15, the peripheral edge of the cover portion 31 of the package 30 is placed. The width W1 of the step surface 15 is set to be as small as possible in order to ensure the volume of the concave portion 11 through which the cooling water flows, and in the present embodiment, it is formed to be larger than the shoulder G1 of the friction stirring rotating tool G. The outer diameter.

In the pair of wall portions 14a and 14a facing each other in the peripheral wall 14, through holes 16 and 16 are formed in order to allow the cooling water to flow through the recesses 11. In the present embodiment, the through holes 16 and 16 extend in the opposing direction of the wall portions 14a and 14a, and have a circular cross section, and are formed in the intermediate portion in the depth direction of the recessed portion 11. Further, the shape and position of the through hole 16 are not limited thereto, and may be appropriately changed depending on the type and flow rate of the cooling water.

As shown in FIGS. 3 and 4, the package body 30 has a plate-like cover portion 31 and a plurality of fins 32, 32, ..., wherein the cover portion 31 has a recess 11 with the sleeve body 10. The opening portion 12 (please refer to FIG. 3) has a planar shape of the same shape (square in the present embodiment), and a plurality of fins 32, 32, ... are provided on the lower surface of the lid portion 31.

The plurality of fins 32, 32, ... are arranged in parallel with each other and are orthogonal to the cover portion 31, and are integrated with the cover portion 31. Thereby, heat can be smoothly transmitted between the cover portion 31 and the fins 32, 32, .... As shown in Fig. 3, the fins 32, 32, ... are arranged to extend in a direction orthogonal to the wall portions 14a, 14a of the peripheral wall 14 in which the through holes 16 and 16 are formed (X in Fig. 3) Axis direction). The height (depth) dimension of the fin 32 (the length in the Z-axis direction in FIG. 3) is equal to the depth dimension of the recessed portion 11, and the tip end portion thereof abuts against the bottom surface of the recessed portion 11. Thereby, in the state in which the package body 30 is attached to the cover body 10, the cover portion 31 of the package body 30, the adjacent fins 32, 32, and the bottom surface of the recessed portion 11 are separated into a cylindrical space. The function is as a flow path 33 for allowing cooling water to flow (refer to Fig. 5(a)). Further, the length dimension (the length in the X-axis direction in FIG. 3) of the fins 32, 32, ... is a length dimension shorter than one side of the recessed portion 11, and the fins 32, 32, ... are configured The walls of the peripheral wall 14 at both ends and the recess 11 The inner wall surfaces of the portions 14a and 14a are separated by a predetermined interval. Thereby, in a state in which the package body 30 is attached to the cover body 10, the space between the outer ends of the fins 32, 32, ... and the wall portion 14a of the peripheral wall 14 of the recessed portion 11 is formed as a through hole. 16 extends to the flow path collecting portion 34 in the direction orthogonal to the direction in which the fins 32 extend (the Y-axis direction in FIG. 3) (please refer to FIG. 5(a)).

The package 30 is formed of an aluminum alloy. The package 30 is formed by cutting a block formed of an aluminum alloy. Further, the package body 30 can be appropriately selected from metal materials which can be frictionally stirred, such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy, etc., depending on the application.

Next, the manufacturing method of the liquid cooling jacket P will be specifically described with reference to FIG. The method for manufacturing a liquid cooling jacket according to the present embodiment includes a mounting step of placing the package 30 on the sleeve body 10, and a friction stirring step of performing friction stir along the inner side of the abutting portion 40.

In the placing step, as shown in FIG. 3 and FIG. 5( a ), the package 30 is inserted into the recess 11 of the sleeve body 10 with the fin 32 as the lower side, and the cover portion of the package 30 is placed. 31 is placed on the step surface 15. Here, the opening peripheral edge portion 12a of the recessed portion 11 of the cover body 10 is brought into contact with the peripheral edge portion 30a of the package body 30 to constitute the abutment portion 40.

In the friction stirring step, the friction stir rotating tool G is relatively moved along the inner side of the abutting portion 40. That is, the lower surface (end surface) of the friction stirrer G is opposed to the package 30 and pressed at a predetermined press-in depth, and then placed along the step surface 15 of the cover body 10 (please refer to the third The overlapping portion that coincides with the cover portion 31 of the package 30 moves. At this time, it is preferable that the sleeve body 10 does not move, but is in advance on the peripheral surface of the peripheral wall 14 of the sleeve body 10, A jig (not shown) that surrounds the sleeve body 10 from four directions is fitted.

In the friction stir step, as shown in FIGS. 5( a ) and 6 , the insertion position (starting end 54 a ) of the friction stir rotating tool G is set inside the abutting portion 40 . Then, in a state in which the rotation center Q of the friction stir rotating tool G is superposed on the center of the width direction of the step surface 15, the friction stir rotating tool G is moved and the cover portion 31 is friction stir.

After that, the rotation and movement of the friction stirring rotating tool G are continued, and as shown in FIG. 5(b), the friction stir rotating tool G is wound around the circumference of the opening portion 12 to form the plasticized region W. At this time, the start end 54a (please refer to FIG. 5(a)) and the end end 54b (please refer to FIG. 5(b)) in the friction stir rotating tool G are overlapped, and the configuration is the same with the plasticized region W. Some overlap.

As described above, the friction stirring rotating tool G is frictionally agitated along the inner side of the abutting portion 40 (refer to FIG. 5( a )) to fix the package 30 to the cover body 10, thereby A liquid cooling jacket P is formed.

According to the method for producing a liquid cooling jacket P according to the present embodiment, the aluminum alloy package 30 is friction stir, whereby the resin of the sleeve body 10 is melted by the friction heat, and the package is re-hardened. 30 welded and firmly joined. That is, the sleeve body 10 and the package body 30 can be joined only by the relative frictional movement of the friction stir rotating tool G, so that the liquid cooling jacket P can be easily manufactured. In addition, by making the friction stir rotating tool G line around the circumference of the package 30, the joint strength can be improved, and the workability of joining can be improved. Further, even if the plasticized region W is not pressed to the level of the stepped surface 15, the bonding can be performed.

Further, it is preferable that the shoulder G1 of the friction stirrer G is to be used. The outer diameter is set to be 2 to 5 times the thickness of the lid portion 31 of the package 30. Moreover, it is preferable to set the press-in depth of the friction stirring rotary tool G (the press-in length from the upper surface of the cover part 31 to the lower surface of the shoulder G1) to the cover part 31 of the package 30. 5% to 20% of the thickness. By setting the outer diameter of the shoulder portion G1 or the press-in depth of the friction stir rotating tool G as described above, the joint strength can be improved, which will be described later.

Further, before the friction stir step, it is preferable to apply an etching treatment or an oxyaluminum treatment to at least the contact surface of the cover portion 31 of the package 30 with the step surface 15 of the sleeve body 10. By forming irregularities on the surface of the aluminum alloy package 30, the molten resin enters the concave portion to increase the contact area, and a stronger joint can be obtained.

Further, the structure in the present embodiment is such that the sleeve body 10 has the step surface 15 and the package body 30 is placed on the step surface 15, but is not limited thereto. For example, as shown in FIG. 7, the cover portion 31 of the package 30 may be placed on the upper surface of the peripheral wall 14 of the cover body 10, and the friction stirrer G may be placed along the peripheral wall 14 from above the package 30. The friction stir step is performed by moving relative to the overlapping portion of the cover portion 31.

[Third embodiment]

Next, a third embodiment of the present invention will be described. In the first embodiment and the second embodiment, the friction stir step is performed using the friction stir rotating tool G to bond the resin member 2 and the metal member 3; and in the third embodiment, the rotary tool F is used. The friction step is different from the first embodiment and the second embodiment.

In the bonding method according to the embodiment, the method includes: a coincidence step The resin member 2 is overlapped with the metal member 3; and the rubbing step is performed to frictionally join the overlapped members. The overlapping step is the same as that of the first embodiment, and the description thereof is omitted.

In the rubbing step, as shown in Fig. 8, the resin member 2 and the metal member 3 (aluminum alloy member 3) are frictionally joined by using a rotating tool F (hereinafter also referred to as a friction joining rotating tool F).

The friction engagement rotating tool F is an instrument body F2 having a rotation axis F1 and a tip end provided on the rotation axis F1. The rotating shaft F1 and the fixture body F2 are formed coaxially. On the side of the base end of the rotating shaft F1, a driving device (not shown) is connected. The luminaire main body F2 is driven at a high speed in the axial direction by being driven by a driving device transmitted via the rotating shaft F1. The luminaire main body F2 is formed in a disk shape and is made of a metal material such as tool steel which is harder than an aluminum alloy.

The shape, size, and the like of the frictional engagement rotating tool F can be appropriately set in accordance with the member to be joined. In the present embodiment, for example, the device body F2 has a diameter of 100 mm and the circumferential surface F3 has a width of 4 mm. Further, the press-in depth, the number of rotations, the joining speed, and the like of the frictional engagement rotating tool F can be appropriately set in accordance with the member to be joined; in the present embodiment, the press-in depth is set to 0.2 mm, and the number of revolutions is set to 3000 rpm and joining speed of 500 to 1500 mm/min.

In the rubbing step, after the resin member 2 and the aluminum alloy member 3 are fixed and cannot be moved, the peripheral surface F3 of the luminaire main body F2 is pressed into the upper surface of the aluminum alloy member 3 while the frictional joining rotary tool F is rotated. The predetermined depth (pushing pressure) is moved along the overlapping portion of the resin member 2 and the aluminum alloy member 3. If using a rubbing step, frictionally engage the rotating device F with aluminum The frictional heat of the alloy member 3 melts the surface of the resin member 2, and is welded to the aluminum alloy member 3 at the time of hardening to be firmly joined.

According to the bonding method according to the third embodiment, substantially the same effects as those of the first embodiment can be obtained. Further, in the rubbing step, since the joining can be performed by the pressing force smaller than that of the first embodiment, it is suitable for the case where the joining member is thin.

Further, in the third embodiment, it is preferable that an etching treatment or an oxygen aluminum (anodizing) treatment is applied to at least the contact surface of the aluminum alloy member 3 with the resin member 2, and after the contact surface is formed with irregularities, The above friction step. Further, in the third embodiment, the case of joining the resin member 2 and the aluminum alloy member 3 in the form of a plate is described as an example, but the invention is not limited thereto. For example, as disclosed in the second embodiment, in the manufacture of the liquid cooling jacket, a rubbing step may be performed instead of the friction stirring step.

[Example 1]

Example 1 to Example 3 using the friction stir rotating tool G and Example 4 using the friction bonding rotating tool F were carried out.

Fig. 9 is a perspective view for explaining Embodiments 1 to 3. In the first to third embodiments, as shown in FIG. 9, after the plate-shaped resin member 2 and the plate-shaped aluminum alloy member 3 are overlapped, the overlapping portion is point-to-point from the upper side of the aluminum alloy member 3. The friction stir stirring tool G is pressed, and the composite member 1 is joined by friction heat, and the breaking strength of the composite member 1 is measured. The breaking strength is measured by providing the composite member 1 shown in Fig. 9 to a known tensile tester to pull apart the outer end portion of the resin member 2 and the outer end portion of the aluminum alloy member 3, respectively. Stretching and destroying.

The resin member 2 of Example 1 to Example 3 was made of PET and was formed into a length of 100 mm, a width of 30 mm, and a thickness of 3 mm. On the other hand, the aluminum alloy member 3 is formed to have a length of 100 mm, a width of 30 mm, a thickness of 3 mm or 5 mm. The overlapping portion of the resin member 2 and the aluminum alloy member 3 was 30 mm.

In the first embodiment, in order to derive the optimum press-in depth of the friction stirrer G, the six conditions of the test 1-a to the test 1-f were tested to measure the joint at a predetermined press-in depth. Destructive strength (tensile strength). The conditions of each test are shown in Table 1.

In Test 1-a~ Test 1-f, the correlation results of the breaking strength at a predetermined indentation depth are shown in Table 2. On the other hand, in the judgment column in Tables 2, 4, and 6, "x" indicates that the joint is not joined, and "△" indicates that the tensile strength is weak and "○" indicates sufficient tensile strength.

As shown in Table 2, the results of the test 1-a and the test 1-b, if the press-in depth is 0.2 mm or more, the fracture strength is 3000 N or more; however, if the press-in depth is 0.05 mm or less, the press-in depth is excessive. The surface layer portion of the resin member 2 is not melted and is not joined. In addition, when the press-in depth is 0.1 mm, the case where the thickness of the aluminum alloy member 3 is 5 mm is not joined, and when the thickness is 3 mm, joining occurs but the breaking strength is small. When the press-in depth is 0.2 mm, the ratio of the thickness of the aluminum alloy member 3 to the thickness of the aluminum alloy member 3 is 6.7% in the case of a plate thickness of 3 mm and 4% in the case of a plate thickness of 5 mm.

In addition, since the inspection tests 1-c and 1-d, the tests 1-e and 1-f, the results were substantially the same as those of the test 1-a and the test 1-b, so that the type of the aluminum alloy member 3 was not damaged. The intensity has an effect.

As described above, even if the press-in depth of the friction stir rotating tool G is set to be less than 5% of the plate thickness of the aluminum alloy member 3, the resin member 2 and the aluminum alloy member 3 can be joined, but in order to obtain sufficient tensile strength In addition, it is preferable to set the press-in depth of the friction stir rotating tool G to 5% or more of the thickness of the aluminum alloy member 3.

On the other hand, when the press-in depth of the large friction stir rotating tool G is set, there is a possibility that the plasticized region formed by the friction stir is brought into contact with the resin member 2 to mix the metal and the resin. Further, once the pressing depth of the large friction stir rotating tool G is set, an excessive load acts on the friction stirrer. Therefore, in consideration of these factors, it is preferable to set the press-in depth of the friction stir rotating tool G to 20% or less of the thickness of the aluminum alloy member 3.

[Example 2]

In the second embodiment, in order to derive the friction stirrer G The most suitable for the outer diameter of the shoulder G1 (please refer to Fig. 2), and the two conditions of the test 2-a to the test 2-b are used to measure the friction stirrer with the outer diameter of the predetermined shoulder G1. G is the breaking strength (tensile strength) in the case of joining. The conditions of each test are shown in Table 3.

In Test 2-a and Test 2-b, the results of the fracture-related strength associated with the outer diameter of the predetermined shoulder are shown in Table 4.

As shown in Table 4, in Test 2-a, the outer diameter of the shoulder is greater than 10.0mm, the breaking strength is 3000N or more; Below 7.5 mm, the breaking strength is significantly lowered.

On the other hand, in the test 2-b, if the outer diameter of the shoulder is Above 7.5mm, the breaking strength is 3000N or more; Below 5.0 mm, the breaking strength is significantly lowered.

As described above, even if the outer diameter of the shoulder G1 of the friction stir rotating tool G is set to be smaller than twice the thickness of the aluminum alloy member 3, it can be connected. In order to obtain sufficient tensile strength, the outer diameter of the shoulder portion G1 of the friction stirrer G is preferably twice or more the thickness of the aluminum alloy member 3 in order to obtain sufficient tensile strength. Further, since the strength of the shoulder portion G1 is not changed even if the outer diameter of the shoulder portion G1 is larger than five times the thickness of the aluminum alloy member 3, the outer diameter of the shoulder portion G1 is preferably set to be considered in consideration of the load applied to the friction stirrer device. The thickness of the aluminum alloy member 3 is 5 times or less.

[Example 3]

In the third embodiment, a test relating to the relationship between the fracture strength and the case where the unevenness is formed on the surface of the aluminum alloy member 3 is performed. Under the three conditions of Test 3-a to Test 3-b, the breaking strength (tensile strength) in the case where the surface of the aluminum alloy member 3 was subjected to a predetermined treatment and then joined was measured. The conditions of each test are shown in Table 5.

In Test 3-a to Test 3-c, the results of the fracture strength in each surface treatment of the aluminum alloy member 3 are shown in Table 6.

The "no treatment" in the surface treatment applied to the surface of the aluminum alloy member 3 in Table 6 is that the aluminum alloy member 3 is not subjected to surface treatment.

In addition, in "etching A", the pre-etching process and the etching process shown below are performed. In the pre-etching treatment, first, the aluminum alloy member 3 was immersed in a 30 wt% nitric acid solution at normal temperature for 5 minutes, and then sufficiently washed with ion-exchanged water. Next, at 50 ° C in 5 wt% sodium hydroxide solution After immersion for 1 minute, it was washed with water; it was further immersed in a 30 wt% nitric acid solution at room temperature for 3 minutes, and then washed with water.

In the formal etching process, the aluminum alloy member 3 subjected to the pre-etching treatment is subjected to an etching treatment in which 54 g/L of aluminum chloride hexahydrate is added to a 25 wt% hydrochloric acid solution at 66 ° C. The prepared etching liquid (chloride ion concentration: 48 g/L) was immersed for 4 minutes, washed with water, and further immersed in a 30 wt% nitric acid solution at room temperature for 3 minutes, then washed with water, and further dried by hot air at 120 ° C for 5 minutes.

Further, in the "etching B", after the above-described pre-etching treatment, the etching main processing shown below is performed. That is, in this etching main treatment, the aluminum alloy member 3 which had been subjected to the pre-etching treatment was immersed in a 50 wt% phosphoric acid solution at 66 ° C for 4 minutes, and then washed with water, followed by drying at 120 ° C for 5 minutes.

In addition, in the "oxygen-free aluminum-aluminum sealing", the oxygen-aluminizing aluminum pretreatment and the oxygen-o-aluminum initial treatment are performed as follows. In the epithelial aluminum pretreatment, the aluminum alloy member 3 was first immersed in a 30 wt% nitric acid solution at normal temperature for 5 minutes, and then sufficiently washed with ion-exchanged water. Next, it was washed with water in a 5 wt% sodium hydroxide solution at 50 ° C for 1 minute, and then washed with water at room temperature for 3 minutes in a 30 wt% nitric acid solution.

In the formal treatment of the aluminum oxide aluminum, the aluminum alloy member 3 subjected to the pretreatment of the aluminum oxide aluminum is anodized in a solution having a sulfuric acid concentration of 160 g/L at a liquid temperature of 18 ° C to have a film thickness of 10 μm and then washed with water. It was further dried by hot air at 120 ° C for 5 minutes.

In addition, in the "aerobic aluminum aluminum sealing hole", the above is being carried out. After the oxygen bark aluminum pretreatment, the above-described oxygen barium aluminum is officially processed. Also, boil for 10 minutes in boiling water. Therefore, in the "aerobic aluminum aluminum sealing hole", the sealing treatment is performed to narrow the pores.

Further, in the "wire brush", the surface of the aluminum alloy member 3 is roughened and cut to obtain a concavo-convex treatment using a known wire brush.

As shown in Table 6, the results of the test 3-a and the test 3-b were examined, and it was found that the surface of the aluminum alloy member 3 was unevenly treated by the surface treatment, and the tensile strength was high. Further, it is understood that sufficient tensile strength can be obtained even if the aluminum alloy member 3 is not subjected to surface treatment.

In addition, the result of the test 3-c in which the thickness of the aluminum alloy member 3 was thinned and the outer diameter of the shoulder of the friction stir rotating tool G was reduced was examined, and it was found that "etching A" and "etching B" were performed. In the case of the surface treatment of "oxygen-free aluminum-sealing", high tensile strength can be obtained.

[Embodiment 4]

In the fourth embodiment, the joint strength of the joined member was measured for the joining method described in the third embodiment (please refer to Fig. 8). The breaking strength is measured by placing the joined components on a tensile testing machine to separate them separately. The outer end portion of the resin member 2 and the outer end portion of the aluminum alloy member 3 are stretched and broken.

The resin member 2 in Example 4 was made of PET and had a thickness of 5 mm. The aluminum alloy member 3 is a 1100 alloy having a thickness of 1 mm or 2 mm. The overlapping portion of the resin member 2 and the aluminum alloy member 3 was 30 mm. The joint length is set to 60 mm to 70 mm.

The frictional engagement rotating device F is a device in which the device C having the diameter of the instrument body F2 of 100 mm and a width of 4 mm and the device D of the device body F2 having a diameter of 105 mm and a width of 10 mm are used. For the appliance C, the number of rotations was set to 3000 rpm; for the appliance D, the number of rotations was set to 2857 rpm. The peripheral speeds of the appliance C and the appliance D were both set to 942000 (mm/min).

In the fourth embodiment, the thickness of each member and the combination of the rotary tools were changed, and the preconditions of three types (test 4 to test 6) were set, and the breaking test was performed using the press-in depth and the joining speed (feeding speed) as parameters.

The results of Test 4 are shown in Table 7.

The results of Test 5 are shown in Table 8.

[Table 8] <Test 5> Tensile test results (N)

According to Tables 7 and 8, both the appliance C and the appliance D had a low joint strength at a press-in depth of 0.2 mm and a high joint strength at a press-in depth of 0.4 mm. When the joining speed is 500 mm/min or less, the resin member 2 is broken. The joint strength was sufficient at a joining speed of 1500 mm/min, and the joint strength was low at 2000 mm/min.

On the other hand, in order to examine the influence of the thickness of the aluminum alloy member 3, the result of the test 6 in which the thickness of the aluminum alloy member 3 was 1 mm is shown in Table 9.

As shown in Table 9, even when the thickness of the aluminum alloy member 3 was 1 mm, it was almost the same as the case where the thickness of the aluminum alloy member 3 was 2 mm (refer to Table 8).

1‧‧‧Composite components

2‧‧‧Resin components

3‧‧‧Metal components (aluminum alloy components)

G‧‧‧Spinning stirrer

W‧‧‧Plasticized area

Claims (5)

A liquid cooling jacket characterized in that: a resin sleeve body that allows a heat transfer fluid to flow and a portion having an open recessed portion, and a metal package body that encapsulates an opening portion of the recessed portion, wherein the heat transfer fluid It is to transfer the heat generated by the heat generating body to the outside world. A liquid cooling jacket characterized in that a sleeve made of a thermoplastic resin that allows a heat transfer fluid to flow and a part of which has an open recess is joined to a metal package in which an opening of the recess is sealed, wherein the heat transfer The fluid is to transfer the heat generated by the heat generating body to the outside. The liquid cooling jacket according to claim 1 or 2, wherein a plurality of fins are provided upright toward the concave portion. The liquid cooling jacket according to any one of claims 1 to 3, wherein the package body is provided with a heat generating body on a surface opposite to the concave portion. The liquid cooling jacket according to any one of claims 1 to 4, wherein the package is made of aluminum or aluminum alloy; and the package is etched at a contact surface with the body of the sleeve. The treatment or anodizing treatment is performed to form irregularities, and the resin is embedded in the concave portion.