KR20130085060A - Method for joining resin member with metal member, and liquid-cooled jacket manufacturing method - Google Patents

Abstract

Provided are a method of joining a resin member and a metal member having sufficient bonding strength and being able to easily join, and a method of manufacturing a liquid cooling jacket. After overlapping the resin member 2 and the metal member 3, the rotated friction stirring tool G is pressed from the metal member 3 side, and both members are joined by frictional heat. According to such a joining method, after resin melts by frictional heat, since the resin member 2 is welded to the metal member 3 with temperature fall, it can join simply and firmly.

Description

The joining method of a resin member and a metal member, and the manufacturing method of a liquid cooling jacket {METHOD FOR JOINING RESIN MEMBER WITH METAL MEMBER, AND LIQUID-COOLED JACKET MANUFACTURING METHOD}

This invention relates to the joining method of a resin member and a metal member, and the manufacturing method of the liquid cooling jacket provided with a resin member and a metal member.

BACKGROUND ART A technique for bonding or mechanically fixing a resin member and a metal member is demanded from a wide range of fields such as the automobile industry and the industrial equipment industry. Although using an adhesive material is mentioned as a method of joining a resin member and a metal member comparatively simple, there existed a problem that sufficient strength was not obtained with an adhesive material. Therefore, Patent Literature 1 discloses a technique of inserting a metal member made of an aluminum alloy into a mold in advance, and then injecting a resin baked product into the mold to join both members.

Japanese Patent Publication No. 2007-50630

However, according to such a conventional joining method, there is a problem that the joining work becomes complicated due to the time required for molding, mold release and the like of a mold. Moreover, in the conventional joining method, in order to join a resin and a metal member, performing injection molding, there existed a problem that joining was not possible about the existing resin member. That is, the conventional joining method lacked the freedom of design.

In view of the above, it is an object of the present invention to provide a method of joining a resin member and a metal member and a method of manufacturing a liquid-cooled jacket that can be easily joined at the same time having sufficient bonding strength.

MEANS TO SOLVE THE PROBLEM In order to solve such a subject, this invention presses the rotating rotating tool from the said metal member side after overlapping a resin member and a metal member, melts the said resin member by frictional heat, It is characterized by bonding.

According to this joining method, the surface of the resin member is melted by frictional heat generated in the metal member, and when hardened again, it is welded to the metal member and firmly joined. That is, by simply pressing the rotated rotating tool, both members can be joined relatively easily. Moreover, according to this joining method, existing resin member and a metal member can be joined, and the degree of freedom of a design can be improved only by pressing a rotating tool with respect to a desired location.

Moreover, it is preferable that the said rotation tool is a rotation tool for friction stirring, and presses the end surface of the said rotation tool for friction stirring to the said metal member. According to such a joining method, since the metal member can be pressed in a balanced manner, the joining accuracy can be improved.

Moreover, it is preferable that the said metal member is made from aluminum or aluminum alloy, and sets the outer diameter of the shoulder part of the said rotation stirring tool for friction stirring to 2 to 5 times the thickness of the said metal member. According to this joining method, the joining strength of both members can be raised. If the outer diameter of the shoulder portion is smaller than twice the thickness of the metal member, the joint strength is weak. On the other hand, when the outer diameter of a shoulder part is larger than 5 times the thickness of a metal member, since an overload acts on a friction stirring apparatus, it is not preferable.

Moreover, it is preferable that the said metal member is made of aluminum or aluminum alloy, and sets the indentation amount of the said rotational stirring tool for friction stirring to 5 to 20% of the thickness of the said metal member. According to this joining method, the joining strength of both members can be raised. If the indentation amount of the rotational tool for friction stirring is smaller than 5% of the thickness of the metal member, the joint strength is weak. On the other hand, when the indentation amount of the rotational tool for friction stirring is larger than 20% of the thickness of the metal member, since the overload acts on the friction stirring device, it is not preferable.

Moreover, it is preferable that the said rotation tool is a friction tool rotation tool, and presses the peripheral surface of the friction tool rotation tool to the said metal member. According to this joining method, the resin member and the metal member can be joined by the frictional heat between the rotating friction bonding rotary tool and the metal member.

In addition, the metal member is made of aluminum or an aluminum alloy, and it is preferable to form an uneven surface by etching or anodizing the metal member before bonding. According to this joining method, molten resin can enter into the recessed part formed in the surface of a metal member, and can join more firmly.

In addition, the present invention is provided with a metal sealing body for sealing an opening of the recess in a jacket body made of a resin having a recess in which a heat transport fluid for transporting heat generated by the heat generator to the outside flows and is partially opened. After that, by rotating the rotated tool from the side of the sealing body, a part of the jacket body is melted by frictional heat to bond the jacket body and the sealing body.

According to the method for producing a liquid-cooled jacket, the resin along the jacket body is melted by frictional heat generated in the metal seal, and when it is cured again, the resin is welded to the seal and firmly joined. That is, since the jacket main body and the sealing body can be joined only by pressing the rotating tool, the liquid-cooled jacket can be easily manufactured.

Moreover, it is preferable to join the said jacket main body and the said sealing body by circumferentially rotating tool along the inner periphery of the said sealing body. Thereby, while sealing the opening part of a jacket main body more reliably, the workability of joining can be improved.

According to the joining method of the resin member and the metal member which concerns on this invention, a resin member and a metal member can be joined easily with sufficient joining strength. Moreover, according to the manufacturing method of the liquid cooling jacket which concerns on this invention, the liquid cooling jacket provided with sufficient joint strength can be manufactured easily.

1 is a perspective view showing a bonding method of a resin member and a metal member according to the first embodiment.
Fig. 2 is a view showing a rotating tool for friction stirring, where (a) is a sectional view and (b) is a bottom view.
3 is an exploded perspective view showing a liquid cooling jacket according to a second embodiment.
4 is a perspective view of the sealing body of the liquid cooling jacket according to the second embodiment, directed from below.
FIG. 5 is a plan view showing a friction stir process according to a second embodiment, in which (a) shows a starting portion and (b) shows an ending portion. FIG.
FIG. 6 is a cross-sectional view taken along the line II of FIG.
7 is a cross-sectional view showing a modification of the friction stir process according to the second embodiment.
8 is a perspective view illustrating a bonding method of a resin member and a metal member according to a third embodiment.
9 is a perspective view for explaining an embodiment;

≪ First Embodiment >

EMBODIMENT OF THE INVENTION The 1st Embodiment of this invention is described in detail with reference to drawings. As shown in FIG. 1, the case where the composite member 1 is formed by joining the plate-shaped resin member 2 and the plate-shaped metal member 3 in this embodiment is demonstrated as an example.

The joining method of the resin member and the metal member (hereinafter, simply referred to as "joining method") according to the present embodiment includes an overlapping step of overlapping the resin member 2 and the metal member 3 with respect to the metal member 3. And a friction stir step of performing friction stir.

First, in the overlapping step, as shown in FIG. 1, the metal member 3 is mounted on the resin member 2, and a part of the upper surface of the resin member 2 and a part of the lower surface of the metal member 3 are removed. Contact. In this embodiment, the resin member 2 is a plate-shaped member made of polyethylene terephthalate (PET). The material of the resin member 2 is not limited to PET, What is necessary is just to select suitably from a thermoplastic resin according to a use.

In this embodiment, the metal member 3 is a plate-shaped member made of aluminum alloy (A5052-O). What is necessary is just to select the metal member 3 suitably from friction-stirrable metal materials, such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, and a magnesium alloy, according to a use. Hereinafter, the metal member 3 is also called "aluminum alloy member 3".

Next, in the friction stirring step, as shown in FIGS. 2A and 2B, the aluminum alloy member 3 is rotated using the rotation tool G (hereinafter also referred to as the rotation tool G for friction stirring). Friction stirring is performed on the aluminum alloy member 3 from the upper surface side. The rotation tool G for friction stirring has the shoulder part G1 which shows a substantially cylindrical shape, and the pin part G2 which protruded from the lower surface (end surface) of the shoulder part G1. The rotation tool G for friction stirring consists of a metal material harder than the aluminum alloy member 3, such as tool steel. As shown in FIG.2 (b), the fin part G2 has the spiral part G11 which shows a vortex shape in plan view, and the circular part G12 which is formed in the center of the shoulder part G1, and shows a circle shape in plan view. What is necessary is just to set the shape, size, etc. of the shoulder part G1 and the pin part G2 suitably according to the to-be-joined object. In addition, you may use the rotating tool for friction stirring whose flat lower surface (end surface) of the shoulder part G1 is not provided.

In the friction stirring step, after the resin member 2 and the aluminum alloy member 3 are restrained in a non-movable manner, the lower surface (end surface) of the rotational tool G for friction stirring is opposed to the aluminum alloy member 3, and the aluminum alloy It press-presses (presses) to the predetermined position of the upper surface of the member 3 to a predetermined depth, and moves the rotation tool G for friction stirring along the longitudinal direction of the aluminum alloy member 3 relatively. Although the rotation speed (rotation speed) and joining speed (feed speed) of the rotation tool G for friction stirring are not specifically limited, For example, it moves to rotation speed 1000rpm and joining speed 300mm / min.

The plasticization area | region W is formed in the upper surface of the aluminum alloy member 3 along the movement trace of the rotation tool G for friction stirring. Here, "the baking zone" shall include both the state heated by the frictional heat of the friction stirring rotary tool G, and actually baking, and the state which the friction stirring rotary tool G passed and returned to normal temperature. In this embodiment, friction stirring is performed by the amount of press-in so that the plasticization area | region W does not contact the resin member 2. Moreover, it is preferable to cut out the burr which generate | occur | produced on the upper surface of the aluminum alloy member 3 by friction stirring by cutting.

According to this joining method, the frictional heat is applied to the overlapping region between the resin member 2 and the aluminum alloy member 3 by pressing and moving the rotating tool G for friction stir rotation rotated from above the aluminum alloy member 3. Thereby, resin along the surface (surface layer part) of the resin member 2 melts, and hardens again with temperature fall. Thereby, the resin member 2 is welded and joined to the lower surface of the aluminum alloy member 3. That is, by simply pressing the rotation tool G for friction stirring, both members can be joined comparatively easily. In addition, in the above-described conventional method, since the injection molding of the resin and the joining of the resin member and the aluminum alloy member were performed simultaneously, it was impossible to join the existing member, but according to the joining method according to the present embodiment, The resin member 2 and the aluminum alloy member 3 can also be joined.

Moreover, the freedom of design can be improved only by pressing the rotation tool G for friction stirring with respect to a desired joining location. Moreover, since the metal member can be pressed in a balanced manner by pressing the end surface of the friction tool rotation tool G for the aluminum alloy member 3, joining precision can be improved. In addition, although the plasticization area | region W formed by friction stirring may be joined so that it may contact with the resin member 2, like the present embodiment, the plasticization area | region W does not contact the resin member 2 so that it may rub finely. It can be bonded even if stirring is performed.

Moreover, it is preferable to set the outer diameter of the shoulder part G1 of the rotation tool G for friction stirring to 2 to 5 times the thickness of the aluminum alloy member 3. Moreover, the indentation amount (the indentation length from the upper surface of the aluminum alloy member 3 to the lower surface of the shoulder part G1) of the rotation tool G for friction stirring is set to 5%-20% of the thickness of the aluminum alloy member 3. It is preferable. Bonding strength can be improved by setting the outer diameter of the shoulder part G1 or the pushing-in amount of the rotation tool G for friction stirring in this way. Later on the evidence.

Further, at least a surface of the aluminum alloy member 3 in contact with the resin member 2 is subjected to an etching process or an alumite (anode oxidation) process to form the contact surface unevenly, and then to perform the above-described friction stirring process. It is preferable. According to such a joining method, molten resin enters into the concave portion of the aluminum alloy member 3, and the contact area between the resin member 2 and the aluminum alloy member 3 increases, and therefore, the bonding can be performed more firmly.

An etching process is performed by immersing the aluminum alloy member 3 in the etching liquid prepared by adding aluminum chloride hexahydrate in hydrochloric acid solution, for example. On the other hand, the alumite treatment is carried out by electrochemically oxidizing the surface of the aluminum alloy member 3 by electrolyzing an aluminum alloy as an anode using dilute acid, oxalic acid or the like.

In addition, as a surface treatment which makes the surface of the aluminum alloy member 3 uneven, it is not limited to an etching process and an alumite process, For example, you may form an unevenness by roughening a surface with a wire brush etc., for example.

≪ Second Embodiment >

Next, a second embodiment of the present invention will be described. In this embodiment, as shown in FIG. 3, the case where liquid cooling jacket P which has the resin jacket main body 10 and the sealing body 30 of metal (this embodiment is made from aluminum alloy) is manufactured is taken as an example. Explain. The liquid cooling jacket P is used for cooling a heat generating body such as a central processing unit (CPU), for example.

As illustrated in FIG. 3, the liquid cooling jacket P includes a recess 11 in which a cooling water (not shown), which is a heat transport fluid for transporting heat generated by a CPU (not shown), which is a heat generator, flows to the outside, and simultaneously opens. The sealing body 30 which seals the opening part 12 of the recessed part 11 is fixed to the jacket main body 10 which has).

A CPU (not shown) is attached to the liquid-cooling jacket P via a thermal diffusion sheet (not shown) at the center of the lid plate 31 above the liquid-cooling jacket P. In the liquid-cooling jacket P, The heat generated by the CPU is heat-exchanged with the cooling water flowing inside. As a result, the cover plate 31 transfers heat received from the CPU to the cooling water, and as a result, the CPU is efficiently cooled. The heat diffusion sheet is a sheet for efficiently transferring the heat of the CPU to the cover plate portion 31, and is formed of a metal having high thermal conductivity such as copper, for example.

The jacket main body 10 is a shallow box body in which one side (upper side in this embodiment) is opened, and the recessed part 11 is formed in the inside, and the bottom wall 13 and the peripheral wall 14 are provided. Have In this embodiment, the jacket main body 10 is shape | molded by the thermoplastic resin. As a result, the liquid-cooled jacket P is light in weight and is easily handled.

The step surface 15 is formed in the opening peripheral part 12a of the recessed part 11 of the jacket main body 10 at the position which descended further from the upper surface of the circumferential wall 14. The distance (depth) from the upper surface of the circumferential wall 14 to the step surface 15 is equal to the thickness dimension of the cover plate portion 31 of the sealing body 30 described later. On the step surface 15, the peripheral edge of the cover plate part 31 of the sealing body 30 is mounted. The width W1 of the step surface 15 is preferably set as small as possible in order to secure the volume of the recess 11 through which the coolant flows. However, in the present embodiment, the shoulder portion G1 of the rotational tool G for friction stir It is formed larger than the outer diameter.

In the pair of wall portions 14a and 14a of the peripheral wall 14 which face each other, through holes 16 and 16 are formed, respectively, for circulating the cooling water in the recesses 11. In the present embodiment, the through holes 16 and 16 extend in the opposite direction (the X-axis direction in FIG. 3) of the wall portions 14a and 14a, have a circular cross section, and have a depth of the recessed portion 11. It is formed in the middle part of the direction. In addition, the shape and position of the through-hole 16 are not limited to this, It can change suitably according to the kind and flow volume of cooling water.

As shown in FIG. 3 and FIG. 4, the sealing body 30 has the same shape (square in this embodiment) as the opening part 12 (refer FIG. 3) of the recessed part 11 of the jacket main body 10. As shown in FIG. The cover plate part 31 which has a planar shape, and the some pin 32, 32, ... provided in the lower surface of the cover plate part 31 are comprised.

The plurality of pins 32, 32,... Are arranged parallel to each other and orthogonal to the cover plate portion 31, and are integrally formed with the cover plate portion 31. As a result, heat is preferably transmitted between the cover plate portion 31 and the pins 32, 32,... As shown in FIG. 3, the pins 32, 32,..., The X-axis in the direction orthogonal to the wall portions 14a, 14a of the peripheral wall 14 on which the through holes 16, 16 are formed. Direction). The pin 32 has a height (depth) dimension (length in the Z-axis direction in FIG. 3) equivalent to the depth dimension of the recessed portion 11, and the tip portion thereof is in contact with the bottom face of the recessed portion 11. . Thereby, in the state in which the sealing body 30 was affixed to the jacket main body 10, the cover plate part 31 of the sealing body 30, the adjacent pins 32 and 32, and the bottom face of the recessed part 11 were made. In this case, a cylindrical space is partitioned, and the space functions as a flow path 33 (see FIG. 5A) through which cooling water flows. In addition, the pins 32, 32, ... have a length dimension shorter than the length dimension of one side of the recessed part 11 (the X-axis direction length in FIG. 3), and the both ends of the recessed part 11 It is comprised so that a predetermined space | interval may be spaced apart from the inner wall surface of each wall part 14a, 14a of the peripheral wall 14, respectively. Thereby, in the state which the sealing body 30 adhered to the jacket main body 10, with the wall part 14a of the circumferential wall 14 of the recessed part 11 of both ends of the pins 32, 32, ... The flow path header part 34 (refer FIG. 5 (a)) which the space between is extended from the through-hole 16 to the direction orthogonal to the extension direction of the pin 32 (in the Y-axis direction in FIG. 3). It constitutes.

The sealing body 30 is formed of aluminum alloy. The sealing body 30 is formed by aluminum alloy and is formed by cutting a block. Moreover, what is necessary is just to select the sealing body 30 suitably from a friction-stirrable metal material, such as aluminum, an aluminum alloy, copper, copper alloy, titanium, a titanium alloy, magnesium, a magnesium alloy, according to a use.

Next, the manufacturing method of liquid cooling jacket P is demonstrated concretely using FIG. The manufacturing method of the liquid cooling jacket according to the present embodiment includes a loading step of loading the sealing member 30 on the jacket body 10 and a friction stir step of performing friction stir along the inside of the butt portion 40.

In the stacking step, as shown in FIG. 3 and FIG. 5A, the seal 30 is inserted into the recess 11 of the jacket main body 10 with the pin 32 downward. The cover plate part 31 of the sealing body 30 is mounted on the step surface 15. Here, the opening peripheral part 12a of the recessed part 11 of the jacket main body 10 and the peripheral part 30a of the sealing body 30 abut, and the butt part 40 is comprised.

In the friction stirring step, the rotational tool G for friction stirring is relatively moved along the inner side of the butt portion 40. That is, after the lower surface (end surface) of the friction stirring rotary tool G is opposed to the sealing body 30, and it presses by predetermined injection amount, the step surface 15 of the jacket main body 10 (refer FIG. 3), and Then, the cover plate portion 31 of the sealing body 30 is moved along the overlapped region. At this time, the jig (not shown) surrounding the jacket body 10 from four directions is brought into contact with the peripheral surface of the peripheral wall 14 of the jacket body 10 in advance so that the jacket body 10 does not move. It is preferable.

In the friction stirring step, as illustrated in FIGS. 5A and 6, the insertion position (starting end 54a) of the rotational stirring tool G for friction stirring is set inside the butt portion 40. And the cover plate part 31 is friction-stirred, moving the friction-stirring rotation tool G in the state which superimposed on the rotation center Q of the friction-stirring rotation tool G to the center of the width direction of the step surface 15.

Subsequently, the rotation and movement of the friction stirring rotary tool G are continued, and as shown in FIG. 5B, the friction stirring rotation tool G is circumferentially wound around the opening 12 to form the plasticized region W. As shown in FIG. Form. At this time, the start end 54a (refer FIG. 5 (a)) and the end 54b (refer FIG. 5 (b)) in the rotation tool G for friction stirring overlap, and are a part of plasticization area | region W Is configured to overlap.

As mentioned above, friction stirring rotation tool G is circumscribed along the inside of the butting part 40 (refer FIG. 5 (a)), and the friction body is fixed, and the sealing body 30 is fixed to the jacket main body 10 by Liquid-cooled jacket P is formed.

According to the manufacturing method of the liquid-cooling jacket P which concerns on this embodiment, by friction-stirring with respect to the sealing body 30 made from aluminum alloy, the resin according to the jacket main body 10 is melted by the frictional heat, and it seals when it hardens again. It welds with the sieve 30, and is joined firmly. That is, since the jacket main body 10 and the sealing body 30 can be joined only by pressing and moving the rotation tool G for friction stirring relatively, liquid-cooled jacket P can be manufactured easily. Moreover, by joining the rotation tool G for friction stirring along the circumference | surroundings of the sealing body 30, joining strength can be raised and workability of joining can be improved. Moreover, even if the indentation amount of the grade which the plasticization area | region W does not contact the step surface 15 can be joined, it can join.

Moreover, it is preferable to set the outer diameter of the shoulder part G1 of the rotation tool G for friction stirring to 2 to 5 times the thickness of the cover plate part 31 of the sealing body 30. Moreover, the indentation amount (the indentation length from the upper surface of the cover plate part 31 to the lower surface of the shoulder part G1) of the rotation tool G for friction stirring is 5 to 20% of the thickness of the cover plate part 31 of the sealing body 30. It is preferable to set to%. Bonding strength can be improved by setting the outer diameter of the shoulder part G1 or the pushing-in amount of the rotation tool G for friction stirring in this way. Later on the evidence.

In addition, before performing a friction stirring process, the above etching process or anodize process is given to at least the surface which contacts the step surface 15 of the jacket main body 10 among the cover plate parts 31 of the sealing body 30, You may also By roughly forming the surface of the sealing body 30 which is made of aluminum alloy, the molten resin enters the concave portion, so that the contact area can be increased and more firmly joined.

In addition, in this embodiment, although the stepped surface 15 was provided in the jacket main body 10, and the sealing body 30 was mounted in the stepped surface 15, it is not limited to this. For example, as shown in FIG. 7, the cover plate part 31 of the sealing body 30 is mounted on the upper surface of the circumferential wall 14 of the jacket main body 10, and the circumferential wall 14 and the cover plate part ( The friction stir process may be performed by relatively moving the rotation tool G for friction stirring from the upper side of the sealing body 30 along the overlap area | region of 31).

≪ Third Embodiment >

Next, a third embodiment of the present invention will be described. In 1st Embodiment and 2nd Embodiment, although the friction stirring process was performed using the rotation tool G for friction stirring, the resin member 2 and the metal member 3 were bonded, but in the 3rd Embodiment, the rotation tool F It differs from 1st Embodiment and 2nd Embodiment by the point which performs a friction process using the following.

The joining method which concerns on this embodiment includes the overlapping process which overlaps the resin member 2 and the metal member 3, and the friction process which performs friction bonding with respect to the overlapping member. Since an overlap stroke is the same as that of 1st Embodiment, description is abbreviate | omitted.

In the friction process, as shown in FIG. 8, it uses the rotation tool F (henceforth a rotation tool F for friction joining) to the resin member 2 and the metal member 3 (aluminum alloy member 3). Friction bonding is performed.

The rotary tool F for friction bonding has the rotating shaft F1 and the tool main body F2 provided in the front-end | tip of the rotating shaft F1. The rotating shaft F1 and the tool main body F2 are coaxially formed. The base end side of the rotating shaft F1 is connected to the drive device which is not shown in figure. The tool main body F2 transmits the drive of a drive device via the rotating shaft F1, and rotates around a shaft at high speed. Tool main body F2 has a disk shape, and consists of a metal material harder than aluminum alloys, such as tool steel.

Although the shape, size, etc. of the friction tool rotation tool F may be suitably set according to the member to join, in this embodiment, the diameter of the tool main body F2 is 100 mm, and the width of the circumferential surface F3 is 4 mm, for example. It was adopted. In addition, although the press-in amount, rotation speed, and joining speed of the friction welding rotation tool F may be suitably set according to the member to join, in this embodiment, for example, press-fit amount is 0.2 mm and rotation speed is 3000 rpm, The bonding speed was set to 500-1500 mm / min.

In the friction process, after constraining the resin member 2 and the aluminum alloy member 3 so that they cannot move, the peripheral surface F3 of the tool main body F2 is rotated on the upper surface of the aluminum alloy member 3, while rotating the friction tool rotation tool F. FIG. Is pressed in to a predetermined depth, and moved along the overlapping region of the resin member 2 and the aluminum alloy member 3. According to the friction process, the surface of the resin member 2 is melted by the heat of friction between the friction welding rotary tool F and the aluminum alloy member 3, and when the hardening is again hardened, the aluminum alloy member 3 is welded and firmly joined. do.

Also by the joining method which concerns on 3rd Embodiment, the effect substantially the same as 1st Embodiment can be acquired. Moreover, in a friction process, since it can join with a small pressing force compared with 1st Embodiment, it is suitable when the member to join is thin.

Moreover, in 3rd Embodiment, after performing an etching process or an alumite (anode oxidation) process on the surface which contacts at least the resin member 2 among the aluminum alloy members 3, and forms the said contact surface unevenly, the said One friction process may be performed. In addition, in 3rd Embodiment, although the case where the plate-shaped resin member 2 and the aluminum alloy member 3 were joined was demonstrated as an example, it is not limited to this. For example, as described in the second embodiment, when the liquid cooling jacket is manufactured, a friction step may be performed instead of the friction stir step.

≪ Example 1 >

Examples 1 to 3 using the rotating tool G for friction stirring and Example 4 using the rotating tool F for friction bonding were performed.

9 is a perspective view for describing the first to third embodiments. In Example 1 thru | or Example 3, as shown in FIG. 9, after overlapping the plate-shaped resin member 2 and the plate-shaped aluminum alloy member 3, the aluminum alloy member 3 with respect to the said overlapping area | region. The rotating tool G for friction agitation was pressed in the spot from above), and the breaking strength of the composite member 1 joined by frictional heat was measured. The breaking strength is provided with the composite member 1 shown in FIG. 9 in a well-known tensile tester, and the outer end of the resin member 2 and the outer end of the aluminum alloy member 3 are pulled in the direction in which they are spaced apart from each other. It was measured by breaking.

The resin member 2 in Examples 1-3 is made of PET, length 100mm, width 30mm, and thickness 3mm. On the other hand, the aluminum alloy member 3 is formed in length 100mm, width 30mm, thickness 3mm, or 5mm. The overlap region of the resin member 2 and the aluminum alloy member 3 is 30 mm.

In Example 1, in order to derive the optimal indentation amount of the rotation stirring tool G for friction stirring, breaking strength in the case of joining by predetermined indentation amount under six conditions of test 1-a thru | or 1-f. (Tensile strength) was measured. Table 1 shows the conditions of each test.

In the test 1-a-test 1-f, the result of the breaking strength in a predetermined indentation amount is shown in Table 2. In addition, the judgment column in Table 2, Table 4, and 6 shows that "x" does not join, "△" is bonded, but tensile strength is weak and "(circle)" is sufficient tensile strength.

As shown in Table 2, when the results of Test 1-a and Test 1-b are used, when the indentation amount is 0.2 mm or more, the breaking strength is 3000 N or more, but when the indentation amount is 0.05 mm or less, the indentation amount is too shallow and the resin member 2 Since the surface layer part of is not melted, it does not join. In addition, when the indentation amount was 0.1 mm, when the plate | board thickness of the aluminum alloy member 3 was 5 mm, it did not join, but when plate | board thickness was 3 mm, although it bonded, it turned out that fracture strength is small. When the press-fit amount is 0.2 mm, the ratio of the aluminum alloy member 3 to the plate thickness is 6.7% when the plate thickness is 3 mm, and 4% when the plate thickness is 5 mm.

In addition, when the test 1-c, the test 1-d, the test 1-e, and the test 1-f are the same result as the test 1-a and the test 1-b, the kind of the aluminum alloy member 3 In some cases, it was found that the fracture strength was not affected.

As mentioned above, even if the indentation amount of the rotation stirring tool G for friction stirring is set smaller than 5% of the plate | board thickness of the aluminum alloy member 3, it is possible to join the resin member 2 and the aluminum alloy member 3 together. However, in order to obtain sufficient tensile strength, it is preferable to set the pushing amount of the rotation tool G for friction stirring to 5% or more of the thickness of the aluminum alloy member 3.

On the other hand, when the indentation amount of the rotation stirring tool G for friction stirring is set large, there exists a possibility that the plasticization area | region formed by friction stirring may contact the resin member 2, and metal and resin may mix. Moreover, when the press-fit amount of the rotation tool G for friction stirring is set large, overload will act on a friction stirring apparatus. Therefore, when these are considered, it is preferable to set the indentation amount of the rotation tool G for friction stirring to 20% or less of the plate | board thickness of the aluminum alloy member 3.

<Example 2>

In Example 2, in order to derive the outer diameter of the optimum shoulder part G1 (refer FIG. 2) of the rotation tool G for friction stirring, predetermined shoulder part G1 is carried out under two types of conditions of test 2-a to test 2-b. The breaking strength (tensile strength) at the time of joining with the rotating stirring tool G for friction stirring provided with the outer diameter of was measured. Table 3 shows the conditions of each test.

In the test 2-a and the test 2-b, the result of the breaking strength in the outer diameter of a predetermined shoulder part is shown in Table 4.

As shown in Table 4, in test 2-a, when the outer diameter of the shoulder portion was larger than φ10.0 mm, the breaking strength was 3000 N or more, but when the diameter was φ 7.5 mm or less, the breaking strength remarkably decreased.

On the other hand, in test 2-b, when the outer diameter of a shoulder part was φ7.5 mm or more, breaking strength was 3000 N or more, but when φ5.0 mm or less, breaking strength remarkably decreased.

As mentioned above, even if the outer diameter of the shoulder part G1 of the rotation tool G for friction stirring was set smaller than twice the plate | board thickness of the aluminum alloy member 3, the resin member 2 and the aluminum alloy member 3 are joined together. Although it is possible, in order to acquire sufficient tensile strength, it is preferable to make the outer diameter of the shoulder part G1 of the rotation tool G for friction stirring to be 2 times or more of the thickness of the aluminum alloy member 3. In addition, even if the outer diameter of the shoulder part G1 is made larger than 5 times the plate thickness of the aluminum alloy member 3, there is no change in strength, so considering the load on the friction stirring device, the outer diameter of the shoulder part G1 is an aluminum alloy. It is preferable to set it to 5 times or less of the thickness of the member 3.

<Example 3>

In Example 3, the test was done about the relationship with the breaking strength in the case where the surface of the aluminum alloy member 3 was formed ruggedly. Under the three kinds of conditions of Test 3-a to Test 3-c, the breaking strength (tensile strength) in the case where joining was performed after performing the predetermined process with respect to the surface of the aluminum alloy member 3 was measured. Table 5 shows the conditions of each test.

In test 3-a to test 3-c, the result of the breaking strength in each surface treatment of the aluminum alloy member 3 is shown in Table 6.

"No treatment" does not surface-treat the aluminum alloy member 3 among the surface treatments performed on the aluminum alloy member 3 of Table 6.

In addition, in "etching A", the etching preprocess and the etching main process which are described below are performed. In the etching pretreatment, first, the aluminum alloy member 3 is immersed in a 30 wt% nitric acid solution at room temperature for 5 minutes, then washed with ion-exchanged water sufficiently, and then immersed in 5 wt% sodium hydroxide solution at 50 ° C. for 1 minute. After washing with water, and further immersing in a 30wt% nitric acid solution at room temperature for 3 minutes, washing with water.

In the etching main treatment, the aluminum alloy member 3 subjected to the etching pretreatment is immersed at 66 ° C. for 4 minutes in an etching solution (chlorine ion concentration: 48 g / L) prepared by adding 54 g / L aluminum chloride hexahydrate in a 25 wt% hydrochloric acid solution. After performing an etching treatment with water, it was immersed in a 30 wt% nitric acid solution at room temperature for 3 minutes, and then washed with water and dried for 5 minutes by hot air at 120 ° C.

In addition, in "etching B", after performing the above-mentioned etching preprocess, the etching main process described below is performed. That is, in this etching main processing, the aluminum alloy member 3 after performing the etching pretreatment was immersed in 50 wt% phosphoric acid solution for 4 minutes at 66 degreeC, and it washed with water, and dried for 5 minutes by 120 degreeC hot air after that.

In addition, in "no alumite sealing", the alumite pretreatment shown below and the alumite main treatment are performed. In the alumite pretreatment, first, the aluminum alloy member 3 is immersed in a 30 wt% nitric acid solution at room temperature for 5 minutes, then washed with ion-exchanged water sufficiently, and then immersed in a 5 wt% sodium hydroxide solution at 50 ° C. for 1 minute. After washing with water, and further immersing in a 30wt% nitric acid solution at room temperature for 3 minutes, washing with water.

In the alumite main treatment, the aluminum alloy member 3 after the alumite pretreatment is subjected to anodization so as to have a liquid temperature of 18 ° C. and a film thickness of 10 μm in a solution having a sulfuric acid concentration of 160 g / L, and then washed with water and subjected to hot air at 120 ° C. Dried for 5 minutes.

In addition, in "there is an alumite sealing," the alumite main treatment is performed after the above alumite pretreatment is performed. After that, it is then boiled in boiling water for 10 minutes. Thereby, in "with an alumite sealing", a sealing is performed and the pore is narrowed.

In addition, in the "wire brush", the surface of the aluminum alloy member 3 was roughly cut using a known wire brush and roughly processed.

As shown in Table 6, from the results of Test 3-a and Test 3-b, it was found that the surface treated so that the surface of the aluminum alloy member 3 was uneven, the tensile strength was higher. Moreover, even when surface treatment is not given to the aluminum alloy member 3, it turned out that sufficient tensile strength is obtained.

In addition, when the thickness of the aluminum alloy member 3 is reduced, the results of the test 3-c in which the outer diameter of the shoulder portion of the rotating tool G for friction stirring is also reduced are shown in "Etching A", "Etching B" and "Aluminite sealing". It was found that high tensile strength was obtained when the surface treatment of “none” was performed.

<Example 4>

In Example 4, the breaking strength of the joined member was measured in the joining method described in the third embodiment (see FIG. 8). The failure strength was provided by attaching the joined member to the tensile tester, stretching the outer end portion of the resin member 2 and the outer end portion of the aluminum alloy member 3 in the direction of separating, and breaking and measuring them.

The resin member 2 in Example 4 is made of PET, and has a thickness of 5 mm. The aluminum alloy member 3 is a 1100 alloy and has a thickness of 1 mm or 2 mm. The overlap region of the resin member 2 and the aluminum alloy member 3 is 30 mm. The joint length was set to 60 mm-70 mm.

The rotation tool F for friction welding employ | adopted two types of the tool C of the diameter of the tool main body F2 of 100 mm and width 4mm, and the tool D of the diameter of the tool main body F2 of 105 mm and width 10mm. For tool C, the rotation speed was set to 3000 rpm, and for tool D, the rotation speed was set to 2857 rpm. In both tool C and tool D, the peripheral speed was set to 942000 (mm / min).

In Example 4, three types (tests 4 to 6) of preconditions were set by changing the thickness of each member and the combination of the rotational tools, and the fracture test was performed using the indentation amount and the joining speed (feed speed) as parameters.

The results of test 4 are shown in Table 7.

The results of the test 5 are shown in Table 8.

From Table 7 and Table 8, both the tool C and the tool D had a low joint strength when the indentation amount was 0.2 mm and a high bond strength when the indentation amount was 0.4 mm. At the bonding speed of 500 mm / min, the resin member 2 was broken. Although the joining speed had sufficient joining strength up to 1500 mm / min, the joining strength was low at 2000 mm / min.

On the other hand, in order to show the influence of the plate | board thickness of the aluminum alloy member 3, the result of the test 6 which made thickness of the aluminum alloy member 3 1 mm is shown in Table 9.

As shown in Table 9, even when the plate thickness of the aluminum alloy member 3 was set to 1 mm, the same results as those obtained when the plate thickness was set to 2 mm (see Table 8) were obtained.

1: composite member
2: resin member
3: metal member (aluminum alloy member)
10: Jacket body (resin member)
11: concave
12: opening
12a: periphery of opening
14: surrounding wall
15: step surface
30: sealing body (aluminum alloy member)
30a: periphery
31: cover plate
32: pin
F: Rotation Tool (Rotation Tool for Friction Joining)
G: rotation tool (rotation tool for friction stirring)
P: liquid-cooled jacket

Claims (6)

Rotation which rotated after loading the metal sealing body which seals the opening part of the said recessed part in the jacket main body made of resin which has the recessed part which the heat-transporting fluid which conveys the heat which a heat generating body generate | occur | produces to the outside, and opened a part. By pressing the tool from the side of the seal, friction stir is performed so that the plasticized region formed by the friction stir does not come into contact with the jacket body to melt a part of the jacket body by frictional heat, A method of manufacturing a liquid-cooled jacket, characterized by joining the jacket body and the seal body by circumferentially rotating the rotary tool along the inner side of the peripheral portion. The method of claim 1,
The rotary tool is a rotary tool for friction stirring,
The end surface of the said friction stirring rotary tool is pressed against the said sealing body, The manufacturing method of the liquid cooling jacket characterized by the above-mentioned. The method of claim 2,
The seal is made of aluminum or aluminum alloy,
The outer diameter of the shoulder part of the said rotational tool for friction stirring is set to 2 to 5 times the thickness of the said sealing body, The manufacturing method of the liquid cooling jacket characterized by the above-mentioned. The method according to claim 2 or 3,
The seal is made of aluminum or aluminum alloy,
The press-fit amount of the rotary tool for friction stirring is set to 5% to 20% of the thickness of the sealing body, characterized in that the method for producing a liquid-cooled jacket. The method of claim 1,
The rotary tool is a rotary tool for friction welding,
A method of manufacturing a liquid-cooled jacket, characterized by pressing the circumferential surface of the rotary tool for friction welding against the seal. The method of claim 1,
The seal is made of aluminum or aluminum alloy,
The method for manufacturing a liquid-cooled jacket, wherein the sealing member is subjected to an etching treatment or anodization treatment to form an uneven surface before bonding.

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