WO2020170488A1

WO2020170488A1 - Method for manufacturing liquid-cooled jacket

Info

Publication number: WO2020170488A1
Application number: PCT/JP2019/036351
Authority: WO
Inventors: 堀　久司; 伸城瀬尾
Original assignee: 日本軽金属株式会社
Priority date: 2019-02-22
Filing date: 2019-09-17
Publication date: 2020-08-27

Abstract

The present invention is characterized in including a main joining step in which, in a state such that only an agitation pin (F2) of a rotating tool (F) that rotates is inserted into a side surface (3c) of a sealing body (3) and the outer peripheral surface of the agitation pin (F2) is slightly brought into contact with the end surface of a peripheral wall part (11), one lap around the side surface of the sealing body (3) is completed at a prescribed depth along a set movement route (L1) that is set closer to the sealing body (3) than to an abutting part (J1) to perform friction stir welding on the abutting part (J1), the present invention also being characterized in that, in the main joining step, after only the rotating agitation pin (F2) is inserted at a start position (SP1) set closer to a surface (3a) of the sealing body (3) than to the set movement route (L1), the agitation pin (F2) is gradually pushed in to the prescribed depth while the rotating tool (F) is caused to move to the set movement route.

Description

Liquid cooling jacket manufacturing method

The present invention relates to a method for manufacturing a liquid cooling jacket.

For example, Patent Document 1 discloses a method for manufacturing a liquid cooling jacket. FIG. 20 is a sectional view showing a conventional method for manufacturing a liquid cooling jacket. In the conventional method of manufacturing a liquid cooling jacket, a butt portion J10 formed by abutting the step side surface 101c provided on the step portion of the aluminum alloy jacket body 101 and the side surface 102c of the aluminum alloy sealing body 102. Friction stir welding is performed. Further, in the conventional liquid cooling jacket manufacturing method, only the stirring pin F2 of the rotary tool F is inserted into the abutting portion J10 to perform friction stir welding. Further, in the conventional method for manufacturing a liquid cooling jacket, the rotation center axis Z of the rotary tool F is overlapped with the abutting portion J10 and relatively moved.

JP, 2005-131321, A

Here, the jacket body 101 is likely to have a complicated shape, for example, it is formed of a cast material of 4000 series aluminum alloy, and a relatively simple shape such as the sealing body 102 is a wrought material of 1000 series aluminum alloy. There is a case where it is formed by. In this way, members having different aluminum alloy grades may be joined together to manufacture a liquid cooling jacket. In such a case, since the hardness of the jacket body 101 is generally higher than that of the sealing body 102, when friction stir welding is performed as shown in FIG. The material resistance received from the jacket body 101 side is larger than the material resistance received from the side. Therefore, it becomes difficult to stir different materials by the stirrer pin F2 of the rotary tool F in a well-balanced manner, and there is a problem that a cavity defect occurs in the plasticized region after joining and the joining strength decreases.

Further, as shown in FIG. 20, when the stirring pin F2 is inserted into the abutting portion J10, the stirring pin F2 is pushed vertically to a predetermined depth, so that the friction heat at the friction stir start position becomes excessive. .. As a result, at the starting position, the metal on the jacket body 101 side easily mixes into the sealing body 102 side, which causes a problem of defective bonding.

Further, when the stirring pin F2 is separated from the abutting portion J10, the stirring pin F2 is pulled out in the vertical direction, so that the friction heat at the end position of the friction stirring becomes excessive. As a result, at the end position, the metal on the jacket body 101 side easily mixes into the sealing body 102 side, which causes a problem of defective bonding.

From this point of view, it is an object of the present invention to provide a method for manufacturing a liquid cooling jacket capable of suitably joining aluminum alloys of different material types.

In order to solve the above-mentioned problems, the present invention comprises a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body. A method of manufacturing a liquid cooling jacket for joining the sealing body with friction stirring, wherein the jacket body is formed of a first aluminum alloy, and the sealing body is formed of a second aluminum alloy, The first aluminum alloy is a material having a hardness higher than that of the second aluminum alloy, and the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper, and the jacket body is sealed with the sealing material. A mounting step of forming an abutting portion by stacking an end surface of the peripheral wall portion and a back surface of the sealing body by mounting a stopper, and only the stirring pin of the rotating tool that rotates is the sealing body. Of the stirring pin, with the outer peripheral surface of the stirring pin slightly contacting the end surface of the peripheral wall portion, a predetermined depth along the set movement route set on the sealing body side with respect to the abutting portion. And a main joining step in which the abutting portion is frictionally stirred around the side surface of the sealing body by a single round, and in the main joining step, only the rotating stirring pin is further sealed than the set movement route. After the insertion at the start position set on the surface side of the stopper, the stirring pin is gradually pushed in until the predetermined depth is reached while moving the rotary tool to the set movement route.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method of manufacturing a liquid cooling jacket, which is joined by friction stirring, wherein the jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion by overlapping, only the stirring pin of the rotating rotating tool is inserted into the side surface of the sealing body, With the outer peripheral surface of the stirring pin slightly contacting the end surface of the peripheral wall portion, a predetermined depth of the sealing body along a set movement route set on the sealing body side with respect to the abutting portion. A main joining step in which the butt portion is frictionally stirred around the side surface, and in the main joining step, the stirring pin is inserted from a start position set on the set movement route and moved in the traveling direction. The stirring pin is gradually pushed in until the predetermined depth is reached.

According to such a manufacturing method, frictional heat between the sealing body and the stirring pin causes the second aluminum alloy mainly on the sealing body side of the butting portion to be stirred and plasticized, and the peripheral wall portion and the sealing body are joined at the butting portion. can do. Further, since the outer peripheral surface of the stirring pin is only slightly contacted with the peripheral wall portion of the jacket body, it is possible to minimize mixing of the first aluminum alloy from the jacket body into the sealing body. As a result, the second aluminum alloy on the sealing body side is mainly friction-stirred in the butted portion, so that the reduction in bonding strength can be suppressed. Further, it is possible to prevent the frictional heat from becoming excessively large locally by gradually pushing the stirring pin while moving the rotary tool until it reaches a predetermined depth. As a result, it is possible to prevent the first aluminum alloy of the jacket body from mixing into the sealing body side at the friction stir start position.

In the main joining step, the rotation center axis of the rotary tool is inclined with respect to the end surface of the peripheral wall portion such that the outer peripheral surface of the stirring pin and the end surface of the peripheral wall portion are parallel to each other. Therefore, it is preferable to perform frictional stirring on the set moving route.

According to this manufacturing method, the stirring pin and the peripheral wall can be brought into contact with each other in a well-balanced manner.

In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the abutting portion, and when the stirring pin is inserted in the main joining step, the rotation speed is higher than the predetermined rotation speed. It is preferable to insert the stirring pin in a state of being rotated at a high speed, and move the stirring pin to the set movement route while gradually decreasing the rotation speed.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the abutting portion, and when the stirring pin is inserted in the main joining step, the rotation speed is higher than the predetermined rotation speed. It is preferable that the stirring pin is inserted at a high speed in a rotated state, and the rotating tool is pushed in while gradually lowering the rotating speed.

According to such a manufacturing method, friction stirring can be performed more preferably.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method for manufacturing a liquid cooling jacket that is joined by friction stirring, wherein the jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion, thereby inserting only the stirring pin of the rotating rotary tool into the side surface of the jacket body, With the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body, a predetermined depth of the jacket main body along the set movement route set on the jacket main body side with respect to the abutting portion. A main joining step in which the abutting portion is frictionally stirred around the side surface, and in the main joining step, only the rotating stirring pin is set on the bottom side of the jacket body further than the set movement route. After the insertion at the starting position, the stirring tool is gradually pushed in until the predetermined depth is reached while moving the rotary tool to the set movement route.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method for manufacturing a liquid cooling jacket that is joined by friction stirring, wherein the jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion, thereby inserting only the stirring pin of the rotating rotary tool into the side surface of the jacket body, With the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body, a predetermined depth of the jacket main body along the set movement route set on the jacket main body side with respect to the abutting portion. A main joining step in which the butt portion is frictionally stirred around the side surface, and in the main joining step, the stirring pin is inserted from a start position set on the set movement route and moved in the traveling direction. The stirring pin is gradually pushed in until the predetermined depth is reached.

According to this manufacturing method, frictional heat between the jacket body and the stirring pin causes the second aluminum alloy mainly on the jacket body side of the butted portion to be agitated and plasticized, and the peripheral wall portion and the sealing body are joined at the butted portion. be able to. Further, since the outer peripheral surface of the stirring pin is only slightly contacted with the sealing body, the mixing of the first aluminum alloy from the sealing body into the jacket body can be minimized. As a result, the second aluminum alloy on the jacket body side is mainly friction-stirred in the abutting portion, so that the reduction in joint strength can be suppressed. Further, it is possible to prevent the frictional heat from becoming excessively large locally by gradually pushing the stirring pin while moving the rotary tool until it reaches a predetermined depth. As a result, it is possible to prevent the first aluminum alloy of the sealing body from being mixed into the jacket body side at the friction stir start position.

In the main joining step, the rotation center axis of the rotary tool is tilted with respect to the back surface of the sealing body so that the outer peripheral surface of the stirring pin and the back surface of the sealing body are parallel to each other. It is preferable to perform frictional stirring on the set moving route in this state.

According to this manufacturing method, the stirring pin and the sealed body can be brought into contact with each other in a well-balanced manner.

In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the abutting portion, and when the stirring pin is inserted in the main joining step, the rotation speed is higher than the predetermined rotation speed. It is preferable that the stirring pin is inserted while being rotated at a high speed, and is moved to the set movement route while gradually decreasing the rotation speed.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method for manufacturing a liquid cooling jacket that is joined by friction stirring, wherein the jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion, by inserting only the stirring pin of the rotating rotary tool into the side surface of the sealing body, In a state in which the outer peripheral surface of the stirring pin is slightly contacted with the end surface of the peripheral wall portion, at a predetermined depth of the sealing body along a set movement route set on the sealing body side with respect to the abutting portion. A main joining step in which the butt portion is frictionally stirred around the side surface, and in the main joining step, an end position is set further on the surface side of the sealing body than the set movement route, After the friction stir welding to the butt portion, the stirring tool is gradually raised while moving the rotary tool to the end position, and the rotary tool is disengaged from the sealing body at the end position.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method of manufacturing a liquid cooling jacket, which is joined by friction stirring, wherein the jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion by overlapping, only the stirring pin of the rotating rotating tool is inserted into the side surface of the sealing body, With the outer peripheral surface of the stirring pin slightly contacting the end surface of the peripheral wall portion, a predetermined depth of the sealing body along a set movement route set on the sealing body side with respect to the abutting portion. A main joining step of friction stirring the butt portion by making a round around the side surface, in the main joining step, setting an end position on the set movement route, after friction stir welding on the butt portion, The stirring tool is gradually raised while moving the rotary tool to the end position, and the rotary tool is separated from the sealing body at the end position.

According to such a manufacturing method, frictional heat between the sealing body and the stirring pin causes the second aluminum alloy mainly on the sealing body side of the butting portion to be stirred and plasticized, and the peripheral wall portion and the sealing body are joined at the butting portion. can do. Further, since the outer peripheral surface of the stirring pin is only slightly contacted with the peripheral wall portion of the jacket body, it is possible to minimize mixing of the first aluminum alloy from the jacket body into the sealing body. As a result, the second aluminum alloy on the sealing body side is mainly friction-stirred in the butted portion, so that the reduction in bonding strength can be suppressed. Further, since the stirring pin is gradually removed while moving the rotary tool, it is possible to prevent the frictional heat from becoming excessive locally. As a result, it is possible to prevent the first aluminum alloy of the jacket body from being mixed into the sealing body side at the friction stir end position.

Further, in the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion, and when the stirring pin is released in the main joining step, the rotation speed is higher than the predetermined rotation speed. It is preferable to move to the end position while gradually increasing the rotation speed.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method for manufacturing a liquid cooling jacket that is joined by friction stirring, wherein the jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion, thereby inserting only the stirring pin of the rotating rotary tool into the side surface of the jacket body, With the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body, a side surface of the jacket body at a predetermined depth along a set movement route set on the jacket body side with respect to the butting portion. A main joining step in which the abutting portion is friction-stirred by making one round around, and in the main joining step, an end position is set further on the bottom side of the jacket main body than the set movement route, and the abutting portion is After the friction stir welding with respect to, the stirring tool is gradually raised while moving the rotary tool to the end position, and the rotary tool is disengaged from the jacket body at the end position.

Further, the present invention includes a jacket body having a bottom portion and a peripheral wall portion rising from a peripheral edge of the bottom portion, and a sealing body that seals an opening portion of the jacket body, and the jacket body and the sealing body are provided. A method for manufacturing a liquid cooling jacket that is joined by friction stirring, wherein the jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, and the first aluminum alloy is It is a material having a hardness higher than that of the second aluminum alloy, the outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to be tapered, and the sealing body is mounted on the jacket body. By placing the end face of the peripheral wall portion and the back surface of the sealing body to form a butt portion, thereby inserting only the stirring pin of the rotating rotary tool into the side surface of the jacket body, With the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body, a predetermined depth of the jacket main body along the set movement route set on the jacket main body side with respect to the abutting portion. A main joining step of friction stirring the butt portion by making a round around the side surface, in the main joining step, setting an end position on the set movement route, after friction stir welding on the butt portion, The stirring tool is gradually raised while moving the rotating tool to the end position, and the rotating tool is disengaged from the jacket body at the end position.

According to this manufacturing method, frictional heat between the jacket body and the stirring pin causes the second aluminum alloy mainly on the jacket body side of the butted portion to be agitated and plasticized, and the peripheral wall portion and the sealing body are joined at the butted portion. be able to. Further, since the outer peripheral surface of the stirring pin is only slightly contacted with the sealing body, the mixing of the first aluminum alloy from the sealing body into the jacket body can be minimized. As a result, the second aluminum alloy on the jacket body side is mainly friction-stirred in the abutting portion, so that the reduction in joint strength can be suppressed. Further, since the stirring pin is gradually removed while moving the rotary tool, it is possible to prevent the frictional heat from becoming excessive locally. As a result, it is possible to prevent the first aluminum alloy of the sealing body from being mixed into the jacket body side at the end position of the friction stirring.

Further, in the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the abutting portion, and when the stirring pin is separated in the main joining step, the speed is higher than the predetermined rotation speed. It is preferable to move to the end position while gradually increasing the rotation speed.

According to the method for manufacturing a liquid cooling jacket according to the present invention, it is possible to preferably join aluminum alloys having different grades.

It is an exploded perspective view showing a liquid cooling jacket concerning a first embodiment of the present invention. It is sectional drawing which shows the mounting process of the manufacturing method of the liquid cooling jacket which concerns on 1st embodiment. It is a perspective view showing a set movement route concerning a first embodiment. It is a perspective view showing the main joining process of the manufacturing method of the liquid cooling jacket concerning a first embodiment. It is sectional drawing which looked at the starting position in the main joining process which concerns on 1st embodiment from the side. It is sectional drawing which looked at the pushing section in the main joining process which concerns on 1st embodiment from the side. It is the sectional view which looked at the midpoint S1 vicinity in the main joining process concerning a first embodiment from the back in the direction of movement. It is a perspective view showing after the end in the main joining process concerning a first embodiment. It is sectional drawing which looked at the detachment|segmentation area|region in the main joining process which concerns on 1st embodiment from the side. It is a perspective view which shows the main joining process in the manufacturing method of the liquid cooling jacket which concerns on 2nd embodiment of this invention. It is sectional drawing which looked at the pushing section in the main joining process which concerns on 2nd embodiment from the side. It is sectional drawing which looked at the intermediate point S1 vicinity in the main joining process which concerns on 2nd embodiment from the advancing direction back. It is a perspective view showing after the end in the main joining process concerning a second embodiment. It is sectional drawing which looked at the leaving section in the main joining process which concerns on 2nd embodiment from the side. It is a perspective view which shows this joining process in the manufacturing method of the liquid cooling jacket which concerns on 3rd embodiment of this invention. It is sectional drawing which looked at the main joining process which concerns on 3rd embodiment from the advancing direction back. It is a perspective view showing after the end of the main joining process concerning a third embodiment. It is a perspective view which shows this joining process in the manufacturing method of the liquid cooling jacket which concerns on 4th embodiment of this invention. FIG. 16 is a perspective view showing a state after the completion of the main joining step in the method for manufacturing a liquid cooling jacket according to the fourth embodiment. It is sectional drawing which shows the manufacturing method of the conventional liquid cooling jacket.

[First embodiment]
Embodiments of the present invention will be described with reference to the drawings as appropriate. As shown in FIG. 1, the liquid cooling jacket 1 according to the first embodiment is composed of a jacket body 2 and a sealing body 3. The liquid cooling jacket 1 is a device that circulates a fluid inside to cool a heating element that is arranged. The jacket body 2 and the sealing body 3 are integrated by friction stir welding. The “front surface” in the following description means the surface opposite to the “rear surface”.

The jacket body 2 is mainly composed of a bottom portion 10 and a peripheral wall portion 11. In the present embodiment, the jacket body 2 is formed mainly including the first aluminum alloy. As the first aluminum alloy, for example, an aluminum alloy casting material such as JIS H5302 ADC12 (Al-Si-Cu system) is used.

The bottom part 10 is a rectangular plate-shaped member. The peripheral wall portion 11 is a wall portion that stands up in a rectangular frame shape from the peripheral portion of the bottom portion 10. The corners of the peripheral wall portion 11 may be right angles, but in this embodiment, round chamfering is applied. A concave portion 13 is formed by the bottom portion 10 and the peripheral wall portion 11. Although the jacket body 2 of the present embodiment is integrally formed, for example, the peripheral wall portion 11 may be divided and joined by a seal member to be integrated.

The sealing body 3 is a plate-shaped member that seals the opening of the jacket body 2. The corners of the sealing body 3 may be right angles, but in this embodiment, round chamfering is performed. The sealing body 3 is not particularly limited as long as it is a metal capable of friction stirring, but in the present embodiment, the sealing body 3 is formed mainly containing a second aluminum alloy. The second aluminum alloy is a material having a hardness lower than that of the first aluminum alloy. The second aluminum alloy is formed of an wrought aluminum alloy such as JIS A1050, A1100, A6063, for example.

Next, a method for manufacturing the liquid cooling jacket according to this embodiment will be described. In the method of manufacturing the liquid cooling jacket according to the present embodiment, a preparation step, a mounting step, and a main joining step are performed.

The preparation step is a step of preparing the jacket body 2 and the sealing body 3. The jacket body 2 and the sealing body 3 are not particularly limited in terms of manufacturing method, but the jacket body 2 is formed by die casting, for example. The sealing body 3 is formed by, for example, extrusion molding.

The placing step is a step of placing the sealing body 3 on the jacket body 2 as shown in FIG. By the mounting step, the end surface 11a of the peripheral wall portion 11 and the back surface 3b of the sealing body 3 are butted against each other to form the butted portion J1. The butt portion J1 is formed in a rectangular shape in plan view along the periphery of the sealing body 3. The side surface 11c of the peripheral wall portion 11 and the side surface 3c of the sealing body 3 are flush with each other. The jacket body 2 and the sealing body 3 may be temporarily joined by welding, friction stirring, or the like.

The main joining step is a step of friction stir welding the butt portion J1 using the rotary tool F as shown in FIGS. 3 and 4. First, the "set movement route L1" (dashed line) is set on the surface 3a side of the sealing body 3 with respect to the abutting portion J1. The set movement route L1 is a movement route of the rotary tool F necessary for joining the abutting portion J1 in the main joining process described later. The set movement route L1 will be described in detail later.

As shown in FIG. 4, the rotary tool F is composed of a connecting portion F1 and a stirring pin F2. The rotary tool F is made of, for example, tool steel. The connecting portion F1 is a portion connected to a rotary shaft of a friction stirrer (not shown). The connecting portion F1 has a cylindrical shape and has a screw hole (not shown) for fastening a bolt.

The stirring pin F2 hangs from the connecting portion F1 and is coaxial with the connecting portion F1. The stirring pin F2 is tapered as it is separated from the connecting portion F1. The tip of the stirring pin F2 is provided with a flat surface F3 (see FIG. 5).

A spiral groove is engraved on the outer peripheral surface of the stirring pin F2. In this embodiment, since the rotary tool F is rotated counterclockwise, the spiral groove is formed in the clockwise direction from the base end toward the tip. In other words, the spiral groove is formed clockwise when viewed from above when tracing the spiral groove from the base end toward the tip.

When rotating the rotary tool F to the right, it is preferable to form the spiral groove counterclockwise from the base end toward the tip. In other words, the spiral groove in this case is formed counterclockwise when viewed from above when tracing the spiral groove from the base end to the tip. By setting the spiral groove in this way, the metal that has been plastically fluidized during frictional stirring is guided to the tip side of the stirring pin F2 by the spiral groove. This can reduce the amount of metal overflowing to the outside of the metal members to be joined (jacket body 2 and sealing body 3).

As shown in FIG. 4, in the main joining process, the push-in section from the start position SP1 to the intermediate point S1, the main section from the intermediate point S1 on the set movement route L1 to the intermediate point S2, and the intermediate point S2. Friction stir welding is continuously performed in the three separation sections from the end position EP1 to the end position EP1 (see FIG. 8). The intermediate points S1 and S2 are set on the set movement route L1. The start position SP1 is set on the side surface 3c of the sealing body 3 closer to the front surface 3a of the sealing body 3 than the set movement route L1. In this embodiment, the line segment connecting the start position SP1 and the intermediate point S1 and the set movement route L1 form an obtuse angle.

In the pushing section of the main joining process, as shown in FIGS. 5 and 6, friction stir from the start position SP1 to the intermediate point S1 is performed. In the pushing-in section, while the rotation center axis Z is perpendicular to the side surface 3c of the sealing body 3, the stirring pin F2 rotated counterclockwise is inserted into the start position SP1 and moved to the intermediate point S1. At this time, as shown in FIG. 6, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" until at least the intermediate point S1 is reached. That is, the rotary tool F is gradually lowered while being moved to the set movement route L1 without being left at one place.

In the pushing section, while rotating the rotary tool F, the rotation center axis Z of the rotary tool F is gradually inclined toward the sealing body 3 side when viewed from the rear in the traveling direction (see FIG. 7), and the intermediate point When S1 is reached, the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 are set to be parallel to each other. Further, when the intermediate point S1 is reached, the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 are set to slightly contact with each other. Then, while maintaining the inclination angle of the rotary tool F, the friction stir welding of this section is directly performed.

The contact margin (offset amount) N between the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 is set, for example, in the range of 0<N≦1.0 mm, preferably in the range of 0<N≦0.85 mm. And more preferably 0<N≦0.65 mm.

As shown in FIG. 7, the set movement route L1 shows a locus through which the center F4 of the flat surface F3 passes. That is, the set movement route L1 is set such that the end surface 11a of the peripheral wall portion 11 and the outer peripheral surface of the stirring pin F2 are in parallel with each other in the circumferential direction of the abutting portion J1 while slightly contacting each other. In this section, the rotation tool F is moved so that the center F4 of the flat surface F3 overlaps with the set movement route L1 when viewed from above (when viewed from the side surface 11c side). The “predetermined depth” of the stirring pin F2 may be set appropriately, and is set, for example, in a range in which the plastic flow material does not flow into the recess 13.

If the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 are set so as not to contact with each other, the joint strength of the abutting portion J1 becomes low. On the other hand, when the contact margin N between the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 exceeds 1.0 mm, a large amount of the first aluminum alloy of the jacket body 2 is mixed into the sealing body 3 side to cause a defective joint. May be

In this section, the rotating tool F is maintained in the inclined state as shown in FIG. 7, and is rotated once along the set movement route L1. As shown in FIG. 8, when the stirring tool F2 reaches the intermediate point S2 by rotating the rotating tool F once, the process directly shifts to the disengagement section. In the disengagement section, as shown in FIG. 9, the stirring pin F2 is gradually moved upward from the midpoint S2 to the end position EP1, and the stirring pin F2 is disengaged from the sealing body 3 at the end position EP1. Let That is, without rotating the rotary tool F at one place, the rotary tool F is gradually pulled out while being moved to the end position EP1. Further, the inclination of the rotation center axis Z of the rotation tool F is gradually returned to the original position so that the rotation center axis Z and the side surface 3c of the sealing body 3 are perpendicular to each other at the end position EP1. The end position EP1 is set to a position where the angle formed by the line segment connecting the end position EP1 and the intermediate point S2 and the set movement route L1 is an obtuse angle. A plasticized region W1 is formed on the movement trajectory of the rotary tool F.

According to the method for manufacturing the liquid cooling jacket in the present embodiment described above, frictional heat between the sealing body 3 and the stirring pin F2 stirs the second aluminum alloy mainly on the sealing body 3 side of the abutting portion J1 to cause plasticity. After being fluidized, the back surface 3b of the sealing body 3 and the end surface 11a of the peripheral wall portion 11 can be joined at the abutting portion J1.

Further, since the outer peripheral surface of the stirring pin F2 is slightly contacted with the end surface 11a of the peripheral wall portion 11, the mixing of the first aluminum alloy from the jacket body 2 into the sealing body 3 can be minimized. As a result, the second aluminum alloy on the side of the sealing body 3 is mainly friction-stirred in the abutting portion J1, so that the reduction in the bonding strength can be suppressed. That is, in the main joining step, the imbalance of the material resistance received by the stirring pin F2 on one side and the other side with respect to the rotation center axis Z of the stirring pin F2 can be minimized. As a result, the plastic flow material is friction-stirred in a well-balanced manner, so that a decrease in joint strength can be suppressed.

Further, in the pushing section of the main joining process, the stirring tool F2 is gradually pushed to a predetermined depth while moving the rotary tool F from the start position SP1 to a position overlapping with the set movement route L1, thereby setting the movement route. It is possible to prevent the frictional heat from becoming excessive by stopping the rotary tool F on L1.
Similarly, in the disengagement section of the main joining step, the stirring tool F2 is gradually raised from a predetermined depth to be disengaged from the set movement route L1 while moving the rotary tool F from the set movement route L1 to the end position EP1. It is possible to prevent the frictional heat from becoming excessive by stopping the rotary tool F above.
As a result, it is possible to prevent excessive frictional heat on the set movement route L1 and excessive mixing of the first aluminum alloy into the sealing body 3 from the jacket body 2 to cause a defective joint.

In the main joining process, the positions of the start position SP1 and the end position EP1 may be set appropriately, but the angle formed by the start position SP1 and the set movement route L1 and the angle formed by the end position EP1 and the set movement route L1 are By setting an obtuse angle, the moving speed of the rotary tool F at the intermediate points S1 and S2 can be smoothly shifted to the main section or the separation section without decreasing. As a result, it is possible to prevent the frictional heat from becoming excessive due to the rotation tool F stopping or the moving speed decreasing on the set moving route L1. The rotary tool F may be moved from the start position SP1 to the set movement route L1 so that the trajectory of the rotary tool F draws an arc when viewed from above. Similarly, the rotary tool F may be moved from the set movement route L1 to the end position EP1 so that the trajectory of the rotary tool F draws an arc when viewed from above.

In the main joining step of the present embodiment, the rotation direction and the traveling direction of the rotary tool F may be set as appropriate, but in the plasticizing region W1 formed on the movement trajectory of the rotary tool F, the jacket body 2 side ( The rotating direction and the advancing direction of the rotary tool F were set so that the butt portion J1 side) became the shear side and the sealing body 3 side became the flow side. By setting the jacket body 2 side to be the sheer side, the stirring action by the stirring pin F2 around the abutting portion J1 is enhanced, and the temperature rise at the abutting portion J1 can be expected, and the sealing body 3 and the peripheral wall at the abutting portion J1 can be expected. The part 11 can be joined more reliably.

The shear side (Advancing side) means the side where the relative speed of the outer circumference of the rotary tool to the welded part is the value of the tangential speed on the outer circumference of the rotary tool plus the magnitude of the moving speed. .. On the other hand, the flow side (Retreating side) refers to the side where the relative speed of the rotary tool with respect to the welded portion becomes low due to the rotary tool rotating in the direction opposite to the moving direction of the rotary tool.

Also, the first aluminum alloy of the jacket body 2 is a material having a higher hardness than the second aluminum alloy of the sealing body 3. Thereby, the durability of the liquid cooling jacket 1 can be improved. Further, it is preferable that the first aluminum alloy of the jacket body 2 is an aluminum alloy cast material and the second aluminum alloy of the sealing body 3 is an aluminum alloy wrought material. The castability, strength, machinability, etc. of the jacket body 2 can be enhanced by using an Al-Si-Cu based aluminum alloy cast material such as JIS H5302 ADC12 as the first aluminum alloy. Further, by making the second aluminum alloy, for example, JIS A1000 series or A6000 series, workability and thermal conductivity can be improved.

Also, in the main joining process, since the entire circumference of the butt portion J1 can be friction stir welded, the airtightness and watertightness of the liquid cooling jacket can be enhanced. Further, at the end portion of the main joining step, the detaching step is performed so that the rotary tool F completely passes through the intermediate point S1 and then moves toward the end position EP1. That is, the airtightness and the watertightness can be further improved by overlapping the respective ends of the plasticized region W1 formed by the main joining process.

Further, in the main joining process, since the friction stirring is performed with the base end side of the stirring pin F2 of the rotary tool F exposed, the load acting on the friction stirring device can be reduced.

Incidentally, in the main joining process, the rotation speed of the rotary tool F may be constant, but may be variable. When the rotation speed of the rotary tool F at the starting position SP1 is V1 and the rotation speed of the rotary tool F is V2 in the main section in the push-in section of the main joining step, V1>V2 may be satisfied. The rotation speed V2 is a constant rotation speed set in advance on the set movement route L1. That is, at the start position SP1, the rotation speed may be set high, and the rotation speed may be gradually reduced within the push-in section to shift to the main section.

Further, in the disengagement section of the first main joining step, if the rotation speed of the rotary tool F in this section is V2 and the rotation speed of the rotary tool F when disengaging at the end position EP1 is V3, V3 may be V2>V2. In other words, after moving to the disengagement section, the rotary tool F may be disengaged from the sealing body 3 while gradually increasing the rotation speed toward the end position EP1. By setting as described above when the rotary tool F is pushed into the sealing body 3 or released from the sealing body 3, a small pressing force at the time of the pushing-in step or the releasing step can be compensated for by the rotation speed. Therefore, frictional stirring can be suitably performed.

[Second embodiment]
Next, a method for manufacturing the liquid cooling jacket according to the second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in that, as shown in FIGS. 10 to 13, both the start position SP1 and the end position EP1 in the main joining process are set on the set movement route L1. The second embodiment will be described focusing on the parts different from the first embodiment.

In the manufacturing of the liquid cooling jacket according to the second embodiment, a preparation process, a mounting process, and a main joining process are performed. The preparation process and the placement process are the same as in the first embodiment.

In the main joining process, as shown in FIG. 10, the start position SP1 is set on the set movement route L1. In the main joining process, the push-in section from the start position SP1 to the intermediate point S1, the main section from the intermediate point S1 on the set movement route L1 to the intermediate point S2 around the circumference, and the intermediate point S2 to the end position EP1 (FIG. 13). Friction stir continuously in the three sections of the separation section up to the reference).

In the pushing section, as shown in FIGS. 10 and 11, friction stir from the start position SP1 to the intermediate point S1 is performed. In the push-in section, the stirring pin F2 rotated counterclockwise is inserted into the start position SP1 while the rotation center axis Z is perpendicular to the side surface 3c of the sealing body 3 and moved to the intermediate point S1. At this time, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" until at least the intermediate point S1 is reached.

In the pushing section, while rotating the rotary tool F, the rotation center axis Z of the rotary tool F is gradually inclined toward the sealing body 3 side when viewed from the rear in the traveling direction (see FIG. 12), and the intermediate point When S1 is reached, the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 are set to be parallel to each other. Further, when the intermediate point S1 is reached, the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 are set to slightly contact with each other. Then, while maintaining the inclination angle of the rotary tool F, the friction stir welding of this section is directly performed. The contact margin (offset amount) N between the outer peripheral surface of the stirring pin F2 and the end surface 11a of the peripheral wall portion 11 and the setting of the set movement route L1 are the same as those in the first embodiment.

As shown in FIG. 13, when the stirring tool F2 reaches the intermediate point S2 by rotating the rotary tool F once, the process directly shifts to the disengagement section. In the disengagement section, as shown in FIG. 14, the stirring pin F2 is gradually moved upward from the midpoint S2 to the end position EP1 and is sealed at the end position EP1 set on the set movement route L1. The stirring pin F2 is removed from the stopper 3. Further, the inclination of the rotation center axis Z of the rotation tool F is gradually returned to the original position so that the rotation center axis Z and the side surface 3c of the sealing body 3 are perpendicular to each other at the end position EP1.

The effect similar to that of the first embodiment can be achieved by the method of manufacturing the liquid cooling jacket according to the second embodiment described above. The start position SP1 and the end position EP1 in the main joining process may be set on the set movement route L1 as in the second embodiment.

[Third embodiment]
Next, a method for manufacturing the liquid cooling jacket according to the third embodiment of the present invention will be described. The third embodiment mainly differs from the first embodiment in that the jacket body 2 is formed of a second aluminum alloy and the sealing body 3 is formed of a first aluminum alloy having a hardness higher than that of the second aluminum alloy. .. In this embodiment, points different from the first embodiment will be mainly described.

As shown in FIG. 15, in the liquid cooling jacket manufacturing method according to the third embodiment, a preparation step, a mounting step, and a main joining step are performed. The preparation process and the placement process are the same as in the first embodiment. In the main joining step, the rotating tool F rotated clockwise is inserted into the start position SP2, and friction stir welding is performed on the abutting portion J1.

As shown in FIG. 15, in the main joining step, the push-in section from the start position SP2 to the intermediate point S1 and the booklet from the intermediate point S1 on the set movement route L1 to the intermediate point S2 by making a round around the peripheral wall portion 11. The section and three sections of the leaving section from the intermediate point S2 to the end position EP2 (see FIG. 17) are continuously friction-stirred.

The set movement route L1 is set on the bottom portion 10 side of the abutting portion J1. The start position SP2 is set on the side surface 11c of the peripheral wall portion 11 further on the bottom portion 10 side than the set movement route L1. The intermediate points S1 and S2 are set on the set movement route L1. In the present embodiment, the angle formed by the line segment connecting the start position SP2 and the intermediate point S1 and the set movement route L1 is set to be an obtuse angle.

In the push-in section, friction stir from the start position SP2 to the midpoint S1 is performed. In the push-in section, the rotation center axis Z is set to be perpendicular to the side surface 11c of the peripheral wall portion 11, the stirring pin F2 rotated clockwise is inserted into the start position SP2, and moved to the intermediate point S1. At this time, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" until at least the intermediate point S1 is reached. That is, the rotary tool F is gradually lowered while being moved to the set movement route L1 without being left at one place.

Further, in the pushing section, while rotating the rotary tool F, the rotation center axis Z of the rotary tool F is gradually inclined to the bottom portion 10 side of the jacket body 2 when viewed from the rear in the traveling direction (see FIG. 16), When the intermediate point S1 is reached, the outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 are set to be parallel to each other. Further, when the intermediate point S1 is reached, the outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 are set to slightly contact with each other. Then, with the inclination angle maintained, the friction stir welding in this section is directly performed. The contact margin (offset amount) N between the outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 and the setting movement route L1 are the same as those in the first embodiment.

As shown in FIGS. 16 and 17, in this section, when viewed from above (when viewed from the side surface 11c side), the rotation tool F is placed so that the center F4 of the flat surface F3 overlaps the set movement route L1. To move. In the main joining step of the present embodiment, the rotary tool F is rotated right so that the sealing body 3 is located on the left side in the traveling direction. That is, in the main joining process, the rotation direction and the traveling direction of the rotary tool F are set such that the butt portion J1 side is the shear side.

As shown in FIG. 17, the rotary tool F is made to go around the peripheral wall portion 11 once, and when the stirring pin F2 passes the intermediate point S1 and reaches the intermediate point S2, it shifts to the leaving section as it is. In the disengagement section, the stirring pin F2 is gradually moved upward from the midpoint S2 to the end position EP2, and the stirring pin F2 is disengaged from the sealing body 3 at the end position EP2. Further, the inclination of the rotation center axis Z of the rotation tool F is gradually returned to the original position so that the rotation center axis Z and the side surface 11c of the peripheral wall portion 11 are perpendicular to each other at the end position EP2. The end position EP2 is set to a position where the angle formed by the line segment connecting the end position EP2 and the intermediate point S2 and the set movement route L1 is an obtuse angle. A plasticized region W1 is formed on the movement trajectory of the rotary tool F.

Also in the liquid cooling jacket manufacturing method according to the third embodiment described above, it is possible to achieve substantially the same effects as in the first embodiment. Further, as in the third embodiment, the jacket body 2 may be formed of the second aluminum alloy and the sealing body 3 may be formed of the first aluminum alloy having a hardness higher than that of the second aluminum alloy.

[Fourth Embodiment]
Next, a method for manufacturing the liquid cooling jacket according to the fourth embodiment of the present invention will be described. The fourth embodiment is different from the third embodiment in that, as shown in FIGS. 18 and 19, both the start position SP2 and the end position EP2 in the main joining process are set on the set movement route L1. The fourth embodiment will be described focusing on the parts different from the third embodiment.

In the manufacturing of the liquid cooling jacket according to the fourth embodiment, a preparation process, a mounting process, and a main bonding process are performed. The preparation process and the placement process are the same as in the first embodiment. In the fourth embodiment, as in the third embodiment, the jacket body 2 is made of a second aluminum alloy and the sealing body 3 is made of a first aluminum alloy having a hardness higher than that of the second aluminum alloy. The set movement route L1 is set closer to the bottom portion 10 side than the abutting portion J1 as in the third embodiment.

In the main joining process, as shown in FIG. 18, the start position SP2 is set on the set movement route L1. In the main joining step, the push-in section from the start position SP2 to the intermediate point S1, the main section from the intermediate point S1 on the set movement route L1 to the intermediate point S2 around one round, and the intermediate point S2 to the end position EP2 (FIG. 19). Friction stir welding is continuously performed for the three sections of the separation section up to the reference).

In the pushing section, as shown in FIGS. 18 and 19, friction stir from the start position SP2 to the intermediate point S1 is performed. In the pushing section, the stirring pin F2 rotated right is inserted into the start position SP2 while the rotation center axis Z is perpendicular to the side surface 11c of the peripheral wall portion 11 and moved to the intermediate point S1. At this time, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" until at least the intermediate point S1 is reached.

In the push-in section, while the rotary tool F is being moved, the rotation center axis Z of the rotary tool F is gradually inclined toward the peripheral wall portion 11 when viewed from the rear in the traveling direction, and when the intermediate point S1 is reached. The outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 are set to be parallel to each other. Further, when the intermediate point S1 is reached, the outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 are set to slightly contact with each other. The contact margin (offset amount) N between the outer peripheral surface of the stirring pin F2 and the back surface 3b of the sealing body 3 and the setting of the set movement route L1 are the same as those in the third embodiment. Then, with the inclination angle maintained, the friction stir welding of this section is directly performed.

As shown in FIG. 19, when the stirring tool F2 reaches the intermediate point S2 by rotating the rotary tool F once, the process directly shifts to the disengagement section. In the disengagement section, the stirring pin F2 is gradually moved upward between the intermediate point S2 and the end position EP2, and the stirring pin F2 is moved from the peripheral wall portion 11 to the end position EP2 set on the set movement route L1. Let go. Further, the inclination of the rotation center axis Z of the rotation tool F is gradually returned to the original position so that the rotation center axis Z and the side surface 11c of the peripheral wall portion 11 are perpendicular to each other at the end position EP2.

The effect similar to that of the third embodiment can be obtained by the method of manufacturing the liquid cooling jacket according to the fourth embodiment described above. The start position SP2 and the end position EP2 in the main joining step may be set on the set movement route L1 as in the fourth embodiment.

1 Liquid cooling jacket 2 Jacket body 3 Sealing body F Rotating tool F2 Stirring pin F3 Flat surface J1 Butt portion SP1 Starting position SP2 Starting position EP1 Ending position EP2 Ending position W1 Plasticizing region

Claims

Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotary tool is inserted into the side surface of the sealing body, and the outer peripheral surface of the stirring pin is slightly contacted with the end surface of the peripheral wall portion, and is sealed from the abutting portion. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the sealing body at a predetermined depth along a set movement route set on the body side,
In the main joining step, after inserting only the rotating stirring pin at a start position set on the front surface side of the sealing body further than the set movement route, while moving the rotary tool to the set movement route, A method for producing a liquid cooling jacket, characterized in that the stirring pin is gradually pushed in until a predetermined depth is reached.
In the main joining step, the rotation center axis of the rotary tool is inclined with respect to the end surface of the peripheral wall portion such that the outer peripheral surface of the stirring pin and the end surface of the peripheral wall portion are parallel to each other. The method for manufacturing a liquid cooling jacket according to claim 1, wherein friction stirring is performed on a set moving route.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
When the stirring pin is inserted in the main joining step, the stirring pin is inserted while being rotated at a speed higher than the predetermined rotation speed, and the rotation speed is gradually reduced to move to the set movement route. The method for manufacturing a liquid cooling jacket according to claim 1 or 2, characterized in that.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotary tool is inserted into the side surface of the sealing body, and the outer peripheral surface of the stirring pin is slightly contacted with the end surface of the peripheral wall portion, and is sealed from the abutting portion. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the sealing body at a predetermined depth along a set movement route set on the body side,
In the main joining step, the stirring pin is inserted from a start position set on the set movement route, and the stirring pin is gradually pushed in until it reaches the predetermined depth while moving in the traveling direction. Liquid cooling jacket manufacturing method.
In the main joining step, the rotation center axis of the rotary tool is inclined with respect to the end surface of the peripheral wall portion such that the outer peripheral surface of the stirring pin and the end surface of the peripheral wall portion are parallel to each other. The method for producing a liquid cooling jacket according to claim 4, wherein friction stirring is performed on a set moving route.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
When inserting the stirring pin in the main joining step, the stirring pin may be inserted while being rotated at a speed higher than the predetermined rotation speed, and the rotation tool may be pushed in while gradually decreasing the rotation speed. The method for manufacturing a liquid cooling jacket according to claim 4 or claim 5, which is characterized in that.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotating tool is inserted into the side surface of the jacket body, and the jacket is positioned more than the abutting portion with the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the jacket body at a predetermined depth along a set movement route set on the body side,
In the main joining step, only the rotating stirring pin is inserted at a start position set on the bottom surface side of the jacket body further than the set movement route, and then the rotation tool is moved to the set movement route to set the predetermined distance. The method for producing a liquid cooling jacket, characterized in that the stirring pin is gradually pushed in until the depth of the liquid cooling jacket is reached.
In the main joining step, the rotation center axis of the rotary tool is tilted with respect to the back surface of the sealing body so that the outer peripheral surface of the stirring pin and the back surface of the sealing body are parallel to each other. The method for producing a liquid cooling jacket according to claim 7, wherein the friction stir on the set moving route is performed by.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
When the stirring pin is inserted in the main joining step, the stirring pin is inserted while being rotated at a speed higher than the predetermined rotation speed, and the rotation speed is gradually reduced to move to the set movement route. 9. The method for manufacturing a liquid cooling jacket according to claim 7 or claim 8.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotating tool is inserted into the side surface of the jacket body, and the jacket is positioned more than the abutting portion with the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the jacket body at a predetermined depth along a set movement route set on the body side,
In the main joining step, the stirring pin is inserted from a start position set on the set movement route, and the stirring pin is gradually pushed in until it reaches the predetermined depth while moving in the traveling direction. Liquid cooling jacket manufacturing method.
In the main joining step, the rotation center axis of the rotary tool is tilted with respect to the back surface of the sealing body so that the outer peripheral surface of the stirring pin and the back surface of the sealing body are parallel to each other. The method for manufacturing a liquid cooling jacket according to claim 10, wherein the friction stir on the set moving route is performed by.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
When inserting the stirring pin in the main joining step, the stirring pin may be inserted while being rotated at a speed higher than the predetermined rotation speed, and the rotation tool may be pushed in while gradually decreasing the rotation speed. The method for manufacturing a liquid cooling jacket according to claim 10, which is characterized in that.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotary tool is inserted into the side surface of the sealing body, and the outer peripheral surface of the stirring pin is slightly contacted with the end surface of the peripheral wall portion, and is sealed from the abutting portion. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the sealing body at a predetermined depth along a set movement route set on the body side,
In the main joining step, an end position is set further on the surface side of the sealing body than the set movement route, and after friction stir welding to the butt portion, the stirring is performed while moving the rotary tool to the end position. A method for manufacturing a liquid cooling jacket, characterized in that the pin is gradually raised to separate the rotary tool from the sealing body at the end position.
In the main joining step, the rotation center axis of the rotary tool is inclined with respect to the end surface of the peripheral wall portion such that the outer peripheral surface of the stirring pin and the end surface of the peripheral wall portion are parallel to each other. The method for manufacturing a liquid cooling jacket according to claim 13, wherein friction stirring is performed on a set movement route.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
The liquid cooling jacket according to claim 13 or 14, wherein when the stirring pin is removed in the main joining step, the stirring pin is moved to an end position while gradually increasing the rotation speed from the predetermined rotation speed. Manufacturing method.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a first aluminum alloy, the sealing body is formed of a second aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotary tool is inserted into the side surface of the sealing body, and the outer peripheral surface of the stirring pin is slightly contacted with the end surface of the peripheral wall portion, and is sealed from the abutting portion. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the sealing body at a predetermined depth along a set movement route set on the body side,
In the main joining step, an end position is set on the set movement route, and after friction stir welding with respect to the butt portion, the stirring pin is gradually raised while moving the rotary tool to the end position, and the end position is increased. The method for manufacturing a liquid cooling jacket, characterized in that the rotating tool is detached from the sealing body.
In the main joining step, the rotation center axis of the rotary tool is inclined with respect to the end surface of the peripheral wall portion such that the outer peripheral surface of the stirring pin and the end surface of the peripheral wall portion are parallel to each other. The method for manufacturing a liquid cooling jacket according to claim 16, wherein friction stirring is performed on a set movement route.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
18. The liquid cooling according to claim 16 or 17, wherein when the stirring pin is detached in the main joining step, the stirring pin is moved to the end position while gradually increasing the rotation speed from the predetermined rotation speed. Jacket manufacturing method.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotating tool is inserted into the side surface of the jacket body, and the outer peripheral surface of the stirring pin is slightly contacted with the back surface of the sealing body, and the jacket body is positioned more than the abutting portion. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the jacket body at a predetermined depth along a set movement route set on the side,
In the main joining step, an end position is set further on the bottom side of the jacket body than the set movement route, and after friction stir welding to the butt portion, the stirring pin is moved while moving the rotary tool to the end position. Is gradually raised to separate the rotary tool from the jacket body at the end position.
In the main joining step, the rotation center axis of the rotary tool is tilted with respect to the back surface of the sealing body so that the outer peripheral surface of the stirring pin and the back surface of the sealing body are parallel to each other. 20. The method for manufacturing a liquid cooling jacket according to claim 19, wherein the friction stir on the set moving route is performed by.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
The liquid cooling according to claim 19 or 20, wherein when the stirring pin is removed in the main joining step, the stirring pin is moved to the end position while gradually increasing the rotation speed from the predetermined rotation speed. Jacket manufacturing method.
Liquid composed of a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion, and a sealing body that seals the opening of the jacket body, and that joins the jacket body and the sealing body by friction stirring. A method of manufacturing a cold jacket,
The jacket body is formed of a second aluminum alloy, the sealing body is formed of a first aluminum alloy, the first aluminum alloy is a material type having a higher hardness than the second aluminum alloy,
The outer peripheral surface of the stirring pin of the rotary tool used for friction stirring is inclined so as to taper,
A mounting step of forming an abutting portion by stacking the end surface of the peripheral wall portion and the back surface of the sealing body by mounting the sealing body on the jacket body.
Only the stirring pin of the rotating rotating tool is inserted into the side surface of the jacket body, and the jacket is positioned more than the abutting portion with the outer peripheral surface of the stirring pin slightly contacting the back surface of the sealing body. A main joining step of friction-stirring the butt portion by making a turn around the side surface of the jacket body at a predetermined depth along a set movement route set on the body side,
In the main joining step, an end position is set on the set movement route, and after friction stir welding with respect to the butt portion, the stirring pin is gradually raised while moving the rotary tool to the end position, and the end position is increased. The method for manufacturing a liquid cooling jacket, characterized in that the rotating tool is detached from the jacket body.
In the main joining step, the rotation center axis of the rotary tool is tilted with respect to the back surface of the sealing body so that the outer peripheral surface of the stirring pin and the back surface of the sealing body are parallel to each other. 23. The method for manufacturing a liquid cooling jacket according to claim 22, wherein the friction stir on the set moving route is performed by.
In the main joining step, the stirring pin is rotated at a predetermined rotation speed to perform friction stir welding of the butt portion,
The liquid cooling according to claim 22 or 23, wherein when the stirring pin is detached in the main joining step, the stirring pin is moved to the end position while gradually increasing the rotation speed from the predetermined rotation speed. Jacket manufacturing method.