CN111032268B - Method for manufacturing heat conductive plate and friction stir welding method - Google Patents
Method for manufacturing heat conductive plate and friction stir welding method Download PDFInfo
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- CN111032268B CN111032268B CN201880055213.0A CN201880055213A CN111032268B CN 111032268 B CN111032268 B CN 111032268B CN 201880055213 A CN201880055213 A CN 201880055213A CN 111032268 B CN111032268 B CN 111032268B
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- side pin
- end side
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- outer peripheral
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Abstract
The technical problem is to provide a method for manufacturing a heat-conducting plate, which can reduce the difference of layer groove on the surface of a metal member and reduce the roughness of the joint surface. The present invention is characterized in that the taper angle of the base end side pin (F2) is larger than the taper angle of the tip end side pin (F3), a step-shaped step portion is formed on the outer peripheral surface of the base end side pin (F2), in the primary welding process, the tip end side pin (F3) of a rotating primary welding rotating tool (F) is inserted into the butting portion (J), and friction stirring is performed in a state where the outer peripheral surface of the base end side pin (F2) is in contact with the front surface (2a) of the base member (2) and the front surface (5a) of the cover plate (5).
Description
Technical Field
The present invention relates to a method for manufacturing a heat conductive plate and a friction stir welding method.
Background
As a rotary tool for friction stir welding, a rotary tool including a shaft shoulder portion and a stirring pin depending from the shaft shoulder portion is known. The rotary tool performs friction stir welding while pressing the lower end surface of the shaft shoulder portion into the metal member. By pressing the shoulder portion into the metal member, the plastic fluidized material can be pressed to suppress the generation of burrs. However, defects are easily generated when the height position of the joint is changed, and there is a problem that the step groove becomes large while a large amount of burrs are generated.
On the other hand, a friction stir welding method is known in which two metal members are welded by using a rotating tool including a stirring pin, and the method is characterized by including a primary welding step in which the rotating stirring pin is inserted into a butting portion between the metal members and friction stir welding is performed in a state in which only the stirring pin is in contact with the metal members (patent document 1). According to the above-described conventional technique, since the friction stir welding is performed with only the stirring pin and the member to be welded being brought into contact and the base end portion being exposed by engraving the spiral groove on the outer peripheral surface of the stirring pin, even if the height position of the welding is changed, the occurrence of defects can be suppressed and the load on the friction stir welding apparatus can be reduced. However, since the plastic fluidizing material is not pressed by the shaft shoulder portion, there is a problem that the step groove of the surface of the metal member becomes large and the joining surface roughness becomes large. Further, there is a problem that a raised portion (a portion where the surface of the metal member is raised compared to before joining) is formed in the vicinity of the level difference groove.
On the other hand, patent document 2 describes a rotary tool including a shaft shoulder portion and a stirring pin that hangs down from the shaft shoulder portion. Tapered surfaces are formed on the shoulder and the outer peripheral surface of the stirring pin, respectively. The tapered surface of the shoulder portion is formed with a spiral groove in a plan view. The cross-sectional shape of the groove is semicircular. By providing the tapered surface, the metal member can be stably joined even if the thickness and the height position of the joint are changed. Further, by causing the plastic fluidizing material to enter the groove, the flow of the plastic fluidizing material can be controlled to form a desired plasticized region.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-39613
Patent document 2: japanese patent No. 4210148
Disclosure of Invention
Technical problem to be solved by the invention
However, according to the conventional technique of patent document 2, the plastic fluidizing material enters the inside of the groove of the tapered surface, and therefore, there is a problem that the groove does not function. Further, when the plastic fluidizing material enters the groove, the plastic fluidizing material is friction-stirred in a state of adhering to the groove, and therefore, there is a problem that the metal members to be joined and the adhering material rub against each other to deteriorate the joining quality. Further, the surfaces of the joined metal members become rough, burrs increase, and the step grooves on the surfaces of the metal members also become large.
From such a viewpoint as described above, the technical problem of the present invention is to provide a method for manufacturing a heat-conducting plate and a friction stir welding method, which can reduce the level difference groove on the surface of a metal member and can reduce the roughness of the welding surface.
Technical scheme for solving technical problem
In order to solve the above technical problem, the present invention includes: a cover plate insertion step of inserting a cover plate into a cover groove formed around a recess provided in a front surface of a base member; and a primary joining step of performing friction stirring by relatively moving a rotary tool including a base end side pin and a tip end side pin along an abutting portion between a side wall of the cover groove and a side surface of the cover plate, wherein a taper angle of the base end side pin is larger than a taper angle of the tip end side pin, and a stepped step portion is formed on an outer peripheral surface of the base end side pin, and the rotary tool is inserted into the abutting portion in the primary joining step, and the friction stirring is performed in a state where the outer peripheral surface of the base end side pin is brought into contact with front surfaces of the base member and the cover plate.
Further, the present invention is characterized by comprising: a heat medium pipe insertion step of inserting a heat medium pipe into a concave groove formed in a bottom surface of a lid groove provided in a front surface of a base member; a cover plate insertion step of inserting a cover plate into the cover groove; and a primary joining step of performing friction stirring by relatively moving a rotary tool including a base end side pin and a tip end side pin along an abutting portion between a side wall of the cover groove and a side surface of the cover plate, wherein a taper angle of the base end side pin is larger than a taper angle of the tip end side pin, and a stepped step portion is formed on an outer peripheral surface of the base end side pin, and the rotary tool is inserted into the abutting portion in the primary joining step, and the friction stirring is performed in a state where the outer peripheral surface of the base end side pin is brought into contact with front surfaces of the base member and the cover plate.
Further, the present invention is characterized by comprising: a sealing step of overlapping the cover plate with the front surface of the base member to cover the groove or the recess formed in the front surface of the base member; and a primary joining step of inserting a rotary tool including a base end side pin and a tip end side pin from a front surface of the cover plate, and relatively moving the rotary tool along an overlapping portion of the front surface of the base member and a back surface of the cover plate, wherein a taper angle of the base end side pin is larger than a taper angle of the tip end side pin, and a stepped step portion is formed on an outer peripheral surface of the base end side pin, wherein in the primary joining step, friction stirring is performed in the overlapping portion while the outer peripheral surface of the base end side pin is brought into contact with the front surface of the cover plate, while the tip end side pin is brought into contact with both the base member and the cover plate, or in a state of being brought into contact with only the cover plate.
Further, the present invention is characterized by comprising: a sealing step of overlapping the cover plate with the front surface of the base member to cover the groove or the recess formed in the front surface of the base member; and a primary joining step of inserting a rotary tool including a base end side pin and a tip end side pin from a back surface of the base member, and relatively moving the rotary tool along an overlapping portion of a front surface of the base member and a back surface of the cover plate, wherein a taper angle of the base end side pin is larger than a taper angle of the tip end side pin, and a stepped step portion is formed on an outer peripheral surface of the base end side pin, and in the primary joining step, friction stirring is performed in the overlapping portion while the outer peripheral surface of the base end side pin is brought into contact with the back surface of the base member, while the tip end side pin is brought into contact with both the base member and the cover plate, or in a state of being brought into contact with only the base member.
Further, the present invention is a friction stir welding method for welding two metal members using a rotary tool including a base end side pin and a tip end side pin, wherein a taper angle of the base end side pin is larger than a taper angle of the tip end side pin, and a stepped step portion is formed on an outer peripheral surface of the base end side pin, the friction stir welding method including: an overlapping portion forming step of forming an overlapping portion by overlapping a front surface of one of the metal members with a rear surface of the other metal member; and a primary joining step of inserting a tip-side pin of the rotating tool from a front surface of the other metal member, and performing friction stirring of the overlapping portion in a state where the tip-side pin is brought into contact with both the one metal member and the other metal member or only the other metal member while an outer peripheral surface of the base-side pin is brought into contact with a front surface of the other metal member, and setting a hardness of the other metal member to be lower than a hardness of the one metal member.
According to the above method, the base member and the lid plate or the metal member can be pressed by the outer periphery of the base end side pin having a large taper angle, and therefore, the level difference groove of the joining surface can be reduced, and the ridge portion formed in the vicinity of the level difference groove can be eliminated or reduced. Since the stepped step portion is shallow and has a large outlet, the plastic fluidizing material is less likely to adhere to the outer peripheral surface of the base end-side pin even if the metal member is pressed by the base end-side pin. Therefore, the bonding surface roughness can be reduced, and the bonding quality can be desirably stabilized. Further, the inclusion of the front-end side pin allows easy insertion into a deep position.
Preferably, the primary joining step is preceded by a temporary joining step in which the butting portion is temporarily joined. Preferably, the primary joining step is preceded by a temporary joining step in which the superposed portion is temporarily joined. According to the manufacturing method, the butt joint part or the overlapping part can be prevented from cracking in the primary joining process.
Preferably, the method further includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed. According to the above method, the joining surfaces can be finished neatly.
Effects of the invention
According to the manufacturing method of the heat conductive plate and the friction stir joining method of the present invention, the level difference groove of the surface of the metal member can be reduced, and the joining surface roughness can be reduced.
Drawings
Fig. 1 is a side view showing a rotary tool for main bonding used in a bonding method according to an embodiment of the present invention.
Fig. 2 is an enlarged sectional view of the main joining rotary tool.
Fig. 3 is a sectional view showing a first modification of the main joining rotary tool.
Fig. 4 is a sectional view showing a second modification of the main joining rotary tool.
Fig. 5 is a sectional view showing a third modification of the main joining rotary tool.
Fig. 6 is a perspective view showing a heat-conducting plate according to a first embodiment of the present invention.
Fig. 7A is a cross-sectional view showing a preparation step of the method for manufacturing the heat transfer plate according to the first embodiment.
Fig. 7B is a sectional view showing a cover plate insertion step in the method for manufacturing the heat transfer plate according to the first embodiment.
Fig. 8 is a plan view showing a socket arrangement step in the method for manufacturing the heat transfer plate according to the first embodiment.
Fig. 9A is a sectional view showing the method of manufacturing the heat-conducting plate of the first embodiment, showing a temporary bonding step.
Fig. 9B is a sectional view showing the method of manufacturing the heat transfer plate according to the first embodiment, and shows the main joining step.
Fig. 10A is a conceptual diagram illustrating a conventional rotary tool.
Fig. 10B is a conceptual diagram illustrating a conventional rotary tool.
Fig. 11A is a sectional view showing a method of manufacturing a heat-conducting plate according to a second embodiment of the present invention, which shows a preparation step.
Fig. 11B is a sectional view showing a method of manufacturing a heat-conducting plate according to a second embodiment of the present invention, showing a cover plate insertion step.
Fig. 12 is a sectional view showing a main bonding step of the second embodiment.
Fig. 13A is a sectional view showing a method of manufacturing a heat-conducting plate according to a third embodiment of the present invention, which shows a temporary bonding step.
Fig. 13B is a sectional view showing the method of manufacturing the heat-conducting plate according to the third embodiment, and shows the main joining step.
Fig. 14A is a sectional view showing a method of manufacturing a heat-conductive plate according to a fourth embodiment of the present invention, which shows a temporary bonding step.
Fig. 14B is a sectional view showing a method of manufacturing a heat transfer plate according to a fourth embodiment of the present invention, and shows a main joining step.
Fig. 15 is a sectional view showing a friction stir welding method according to a fifth embodiment of the present invention.
Fig. 16 is a cross-sectional view showing a modification of the fifth embodiment.
Detailed Description
Embodiments of the present invention will be described with reference to the accompanying drawings as appropriate. First, a main joining rotary tool (rotary tool) used in the joining method of the present embodiment will be described. The rotary tool for final joining is a tool for friction stir joining. As shown in fig. 1, the main joining rotary tool F is made of, for example, tool steel, and mainly includes a base shaft portion F1, a base end side pin F2, and a tip side pin F3. The base shaft portion F1 is a portion having a cylindrical shape and connected to the main shaft of the friction stir apparatus.
The base-end-side pin F2 continues to the base shaft portion F1 and becomes tapered toward the leading end. The base-end-side pin F2 has a truncated cone shape. The taper angle A of the base end side pin F2 may be set as appropriate, but is, for example, 135 to 160 degrees. If the taper angle a is smaller than 135 ° or larger than 160 °, the joining surface roughness after friction stirring becomes large. The taper angle a is larger than a taper angle B of a tip side pin F3 described later. As shown in fig. 2, a stepped step portion F21 is formed on the outer peripheral surface of the base end side pin F2 over the entire height direction. The level difference portion F21 is formed in a spiral shape by winding to the right or to the left. That is, the stepped portion F21 has a spiral shape in a plan view and a stepped shape in a side view. In the present embodiment, since the main joining rotation tool F is rotated to the right, the stepped portion F21 is set to extend from the base end side to the tip end side to the left.
Further, it is preferable that the stepped portion F21 is set to go around from the base end side to the tip end side to the right when the main joining rotary tool F is rotated to the left. Thereby, the plastic fluidizing material is guided to the tip side by the step portion F21, and therefore, the metal overflowing to the outside of the joined metal members can be reduced. The level difference portion F21 is composed of a level difference bottom surface F21a and a level difference side surface F21 b. The distance X1 (horizontal distance) between the apexes F21C and F21C of the adjacent level difference portions F21 is appropriately set according to the level difference angle C and the height Y1 of the level difference side surface F21b, which will be described later.
The height Y1 of the level difference side surface F21b may be appropriately set, but is set to 0.1 to 0.4mm, for example. If the height Y1 is less than 0.1mm, the joining surface roughness becomes large. On the other hand, if the height Y1 is greater than 0.4mm, the joining surface roughness tends to increase, and the number of effective level differences (the number of level differences F21 that contact the joined metal member) also decreases.
The step angle C between the step bottom surface F21a and the step side surface F21b may be set to 85 to 120 DEG, for example. In the present embodiment, the step bottom surface F21a is parallel to the horizontal plane. The step bottom surface F21a may be inclined in the range of-5 ° to 15 ° with respect to the horizontal plane from the rotation axis of the tool toward the outer periphery (negative below the horizontal plane and positive above the horizontal plane). The distance X1, the height Y1 of the step side face F21b, the step angle C, and the angle of the step bottom face F21a with respect to the horizontal plane are appropriately set so that the plastic fluidizing material is discharged to the outside without being accumulated and adhered to the inside of the step portion F21 at the time of friction stirring, and the plastic fluidizing material can be pressed by the step bottom face F21a to reduce the joining surface roughness.
As shown in fig. 1, the front-end side pin F3 is formed continuously with the base-end side pin F2. The front end side pin F3 has a truncated cone shape. The front end of the front end side pin F3 is a flat surface. The taper angle B of the tip side pin F3 is smaller than the taper angle a of the base side pin F2. As shown in fig. 2, a spiral groove F31 is formed in the outer peripheral surface of the distal end side pin F3. The spiral groove F31 may be rounded to the right or left, but in the present embodiment, the primary welding rotary tool F is engraved to the left from the base end side to the tip end side, because it is rotated to the right.
Further, it is preferable that the spiral groove F31 is set to extend from the base end side to the tip end side to the right when the main joining rotary tool F is rotated to the left. Thereby, the plastic fluidizing material is guided to the leading end side by the spiral groove F31, and therefore, the metal overflowing to the outside of the joined metal members can be reduced. The spiral groove F31 is formed of a spiral bottom face F31a and a spiral side face F31 b. The distance (horizontal distance) between the apexes F31c and F31c of the adjacent spiral grooves F31 is defined as a length X2. The height of the spiral side surface F31b was set to a height Y2. The helix angle D formed by the helix bottom surface F31a and the helix side surface F31b is 45-90 degrees, for example. The spiral groove F31 raises frictional heat by coming into contact with the joined metal members, and has a function of guiding the plastic fluidizing material to the leading end side.
The design of the rotary tool F for final joining can be changed as appropriate. Fig. 3 is a side view showing a first modification of the rotary tool of the present invention. As shown in fig. 3, in the primary bonding rotary tool FA according to the first modification, the step angle C formed by the step bottom surface F21a and the step side surface F21b of the step portion F21 is 85 °. The level difference floor F21a is parallel to the horizontal plane. In this way, the level difference bottom surface F21a may be parallel to the horizontal plane, and the level difference angle C may be set to an acute angle within a range in which the plastic fluidizing material is discharged to the outside without being accumulated and adhered to the level difference portion F21 during friction stirring.
Fig. 4 is a side view showing a second modification of the main welding rotary tool of the present invention. As shown in fig. 4, in the main bonding rotary tool FB of the second modification, the step angle C of the step portion F21 is 115 °. The level difference floor F21a is parallel to the horizontal plane. In this way, the level difference bottom surface F21a may be parallel to the horizontal plane, and the level difference angle C may be an obtuse angle within a range functioning as the level difference portion F21.
Fig. 5 is a side view showing a third modification of the main welding rotary tool of the present invention. As shown in fig. 5, in the main bonding rotary tool FC of the third modification, the step bottom surface F21a is inclined upward by 10 ° with respect to the horizontal plane in the outer circumferential direction from the tool rotation axis. The level difference side F21b is parallel to the plumb line. In this way, the level difference bottom surface F21a may be formed to be inclined upward from the horizontal plane in the circumferential direction from the rotational axis of the tool in the range where the plastic fluidizing material can be pressed by friction stirring. The first to third modifications of the main joining rotary tool described above can also provide the same effects as those of the following embodiments.
[ first embodiment ]
Next, the heat transfer plate of the present embodiment will be described. The "front surface" in the following description means a surface opposite to the "back surface". As shown in fig. 6, the heat-conducting plate 1 of the present embodiment is mainly composed of a base member 2 and a cover plate 5. The base member 2 is substantially rectangular parallelepiped. The base member 2 is formed with a recess 3 and a cover recess 4. The material of the base member 2 and the cover plate 5 is not limited as long as friction stirring is possible, but in the present embodiment, it is an aluminum alloy. The base member 2 is formed of a material having a higher hardness than the cover 5, for example.
The groove 3 penetrates from one side surface toward the other side surface at the center of the base member 2. The groove 3 is concavely arranged on the bottom surface of the cover groove 4. The bottom of the groove 3 is circular. The opening of the recess 3 is open to the front face 2a side of the base member 2.
The cover groove 4 is wider than the recess groove 3 and is formed continuously with the recess groove 3 on the front face 2a side of the recess groove 3. The lid groove 4 is rectangular in cross-sectional view and is open to the front face 2a side.
The cover 5 is a plate-like member inserted into the cover groove 4. The cover plate 5 has the same shape as the hollow portion of the cover groove 4, and is inserted into the cover groove 4 without a gap.
The pair of side walls of the lid groove 4 abut against the pair of side surfaces of the lid plate 5 to form abutting portions J, J. The butting portion J, J is joined by friction stirring throughout the depth direction. The space enclosed by the groove 3 of the heat transfer plate 1 and the lower surface of the cover plate 5 constitutes a flow path through which a fluid flows.
Next, a method for manufacturing the heat transfer plate of the first embodiment will be described. In the method for manufacturing a heat transfer plate, a preparation step, a cover plate insertion step, a tab arrangement step, a temporary bonding step, and a main bonding step are performed.
As shown in fig. 7A, the preparation step is a step of preparing the base member 2. First, the base member 2 is fixed to the mount K via a jig (not shown). Next, the concave groove 3 and the lid groove 4 are formed by cutting using an end mill or the like. The base member 2 may be formed with the groove 3 and the lid groove 4 in advance by molding, extrusion molding, or the like.
As shown in fig. 7B, the cover plate insertion step is a step of inserting the cover plate 5 into the cover groove 4. The side walls of the lid groove 4 and the side surfaces of the lid plate 5 are butted to form butting portions J, J. The front face 5a of the cover plate 5 is coplanar with the front face 2 a.
As shown in fig. 8, the socket disposing step is a step of disposing the sockets 10, 10 on the side surfaces of the base member 2. The socket 10 is a member for setting a start position and an end position of friction stir welding described later. The socket 10 is in surface contact with the opposite side surfaces of the base member 2, and is arranged on the extension line of the butting portion J, J. In the present embodiment, the socket 10 is formed of the same material as the base member 2, that is, an aluminum alloy. The socket 10 is joined by welding the socket 10 to the inner corner of the base member 2.
As shown in fig. 9A, the temporary joining step is a step of performing friction stir welding on the butting portion J, J in advance using the rotating tool G for temporary joining. The temporary joining rotary tool G is composed of a shaft shoulder G1 and a stirring pin G2 depending from the shaft shoulder G1. The starting position and the ending position of the temporary joining process are not limited as long as they are on the front surfaces of the socket 10 and the base member 2, but are set on the front surface of the socket 10 in the present embodiment.
Specifically, the start position of the temporary joining process is set on the front surface of one socket 10, and friction stir joining is performed over the entire length of one butting portion J. The plasticized region W1 is formed on the movement locus of the temporary joining rotation tool G. Once the temporary joining rotary tool G is moved to the other socket 10, it is turned back directly on the front face of the socket 10 to perform friction stir joining over the entire length of the other butt joint portion J. Once the temporary joining rotary tool G is moved to one socket 10, the temporary joining rotary tool G is disengaged from the socket 10.
As shown in fig. 9B, the primary welding step is a step of performing friction stir welding of the abutting portion J, J using the primary welding rotating tool F. Preferably, the starting position and the ending position of the primary joining process are set on the front surface of the socket 10. When the primary welding rotary tool F is inserted into the socket 10, the through hole of the temporary welding rotary tool G may be used, or a bottom hole may be separately provided in the socket 10 so that the primary welding rotary tool F is inserted therethrough.
In the primary joining step, friction stir joining is performed with the base-end side pin F2 and the tip-end side pin F3 in contact with the base member 2 and the lid plate 5. The friction stir welding is performed by inserting the tip side pin F2 of the rotating main welding rotating tool F into the butting portion J and pressing the front surface 2a of the base member 2 and the front surface 5a of the lid plate 5 with the outer periphery of the base side pin F2. The rotating tool F for final joining is relatively moved along the butting portion J. The insertion depth of the base end side pin F2 and the tip end side pin F3 may be set as appropriate within a range in which the outer peripheral surface of the base end side pin F2 can press the front surface 2a of the base member 2 and the front surface 5a of the lid plate 5. For example, the insertion depth of the base end side pin F2 and the tip end side pin F3 may be set so that the tip end side pin F3 reaches the lid groove 4 within a range where the outer peripheral surface of the base end side pin F2 can press the front surface 2a of the base member 2 and the front surface 5a of the lid plate 5. In the present embodiment, the vicinity of the central portion in the height direction of the outer peripheral surface of the base end side pin F2 is set so as to contact the front surface 2a of the base member 2 and the front surface 5a of the lid plate 5. A plasticized region W is formed on the movement locus of the main joining rotating tool F. Once the main joining process is completed, the socket 10 is cut out from the base member 2.
Further, the burr removal step may be performed after the primary joining step is completed, and burrs generated by friction stirring may be removed in the burr removal step. By performing the burr removal step, the front surfaces of the base member 2 and the cover plate 5 can be finished to be flush.
Here, for example, as shown in fig. 10A, in the case of the conventional rotary tool 200, since the front surface of the metal member to be joined 210 is not pressed by the shoulder portion, there is a problem that the step groove (groove formed by the front surface of the metal member to be joined and the front surface of the plasticized region) becomes large and the joining surface roughness becomes large. Further, there is a problem that a raised portion (a portion where the surface of the metal member to be joined is raised compared to before joining) is formed in the vicinity of the level difference groove. On the other hand, when the taper angle β of the rotary tool 201 is made larger than the taper angle α of the rotary tool 200 as in the rotary tool 201 of fig. 10B, the front surface of the joined metal member 210 can be pressed as compared with the rotary tool 200, and therefore the level difference groove becomes smaller and the ridge portion also becomes smaller. However, the downward plastic flow becomes strong, and therefore, a kiss joint is easily formed at the lower portion of the plasticized region (Japanese: キッシングボンド).
In contrast, the main joining rotary tool F according to the present embodiment includes the base end side pin F2 and the tip side pin F3, and the taper angle of the tip side pin F3 is smaller than the taper angle a of the base end side pin F2. This makes it easy to insert the final joining rotary tool F into the butting portion J. Further, since the taper angle B of the distal end side pin F3 is small, the rotating tool F for final joining can be easily inserted into the butt portion J at a deep position. Further, since the taper angle B of the leading end side pin F3 is small, the downward plastic flow can be suppressed as compared with the rotary tool 201. Therefore, the lower portion of the plasticized region W can be prevented from being formed with the kiss joint. On the other hand, since the taper angle a of the base end side pin F2 is large, stable joining can be performed even if the thickness of the joined metal members and the height position of the joining are changed as compared with the conventional rotary tool.
Further, the plastic fluidizing material can be pressed by the outer peripheral surface of the base end side pin F2, and therefore, the level difference groove formed in the joining surface can be reduced, and the ridge portion formed in the vicinity of the level difference groove can be eliminated or reduced. Further, since the stepped level difference portion F21 is shallow and the outlet is large, the plastic fluidized material is easily discharged to the outside of the level difference portion F21 while being pressed by the level difference bottom surface F21 a. Therefore, even if the plastic fluidizing material is pressed by the base end side pin F2, the plastic fluidizing material is less likely to adhere to the outer peripheral surface of the base end side pin F2. Thus, the bonding surface roughness can be reduced, and the bonding quality can be desirably stabilized.
In the primary joining step, friction stirring is not necessarily required over the entire length in the depth direction of the butting portion J, J, but it is possible to improve the water-tightness and air-tightness of the heat transfer plate 1 by performing friction stirring over the entire length in the depth direction of the butting portion J.
In addition, by performing the temporary joining step, the base member 2 and the lid plate 5 can be prevented from being cracked when the primary joining step is performed. In the temporary joining step and the final joining step, if the rotary tool G for temporary joining and the rotary tool F for final joining are not separated from the base member 2 during the friction stirring but moved in a one-stroke manner, the number of working steps can be reduced.
In the temporary joining step, the plasticized region W1 may be formed intermittently by the temporary joining rotating tool G by performing friction stirring discontinuously. In the temporary joining step, the butting portions J, J may be joined by welding. Further, the joint 10 may be temporarily joined to the base member 2 by using the temporary joining rotary tool G.
[ second embodiment ]
Next, a second embodiment of the present invention will be explained. The heat-conducting plate of the second embodiment is different from the first embodiment in that it includes the heat-medium tube 6. The heat medium pipe 6 is a member through which a fluid flows.
In the method of manufacturing the heat transfer plate according to the second embodiment, a preparation step, a heat medium pipe insertion step, a cover plate insertion step, a temporary bonding step, and a primary bonding step are performed.
As shown in fig. 11A, the preparation step is a step of preparing the base member 2.
As shown in fig. 11B, the heat medium pipe insertion step is a step of inserting the heat medium pipe 6 into the concave groove 3. The dimensions of the concave groove 3 and the heat medium pipe 6 may be set as appropriate, but in the present embodiment, the outer diameter of the heat medium pipe 6 is substantially the same as the width and depth of the concave groove 3.
The cover plate insertion step is a step of inserting the cover plate 5 into the cover groove 4. The side wall of the lid groove 4 abuts against the side surface of the lid plate 5 to form an abutting portion J. When the lid plate 5 is inserted into the lid groove 4, the heat medium pipe 6 comes into contact with the lid plate 5, and the front face 2a of the base member 2 is coplanar with the front face 5a of the lid plate 5.
The temporary joining step is a step of joining the joining portion J, J in advance. The temporary bonding step is performed in the same manner as in the first embodiment.
As shown in fig. 12, the primary welding step is a step of performing friction stir welding of the abutting portion J, J using the primary welding rotary tool F. The primary joining process is performed in the same manner as in the first embodiment. The plasticized region W, W is formed on the movement locus of the rotating tool F for final joining. The plasticized region W is formed over the entire length of the abutting portion J, J in the depth direction.
The method of manufacturing the heat transfer plate according to the second embodiment also provides substantially the same effects as those of the first embodiment. Further, the heat conductive plate 1A including the pipe 6 for heat medium can be easily manufactured.
Further, for example, the shapes of the concave groove 3, the lid groove 4, the lid plate 5, and the heat medium pipe 6 of the first and second embodiments are merely examples, and may be other shapes. Further, when a step is generated between the front surface 2a of the base member 2 and the front surface of the plasticized region W after the primary joining step, weld overlay may be performed to fill the step. Alternatively, the metal member may be disposed on the front surface of the plasticized region W and friction stir welded to the base member 2 by the main welding rotating tool F.
In the present embodiment, the case where the cover groove 4 is provided is exemplified, but the cover plate 5 may be directly inserted into the recessed groove 3 without providing the cover groove 4.
In addition, as shown in fig. 12, when the void Q is formed around the heat medium pipe 6, the void Q may be filled in by the primary bonding step. In the cover plate insertion step, when the cover plate 5 is inserted into the cover groove 4, the recess 3, the lower surface of the cover plate 5, and the heat medium pipe 6 form a gap Q. The butting portion J, J is positioned close to the heat medium pipe 6, and the plastic fluidizing material formed by the primary welding rotary tool F is caused to flow into the gap Q in the primary welding process. This fills the gap Q around the heat medium pipe 6 with metal, thereby further improving water tightness and air tightness.
[ third embodiment ]
Next, a third embodiment of the present invention will be explained. The method of manufacturing the heat transfer plate of the third embodiment is different from the first embodiment in that the cover groove 4 is not formed in the base member 2, and the cover plate 5 is placed on the front surface 2a of the base member 2.
In the method of manufacturing the heat-conductive plate according to the third embodiment, a preparation step, a groove closing step, a temporary bonding step, and a primary bonding step are performed.
As shown in fig. 13A, the preparation step is a step of preparing the base member 2. A recess 3 is formed in the front face 2a of the base member 2.
The recess closing step (closing step) is a step of placing the cover plate 5 on the front surface 2a of the base member 2 and covering the upper side of the recess 3. In the groove closing process, the front face 2a of the base member 2 is overlapped with the back face 5b of the lid plate 5 to form an overlapped portion J1.
The temporary joining step is a step of joining the overlapped portion J1 in advance. According to the present embodiment, in the temporary joining step, the temporary joining rotary tool G is inserted from the side surfaces of the base member 2 and the lid plate 5 to friction stir join the overlapped portion J1. After the temporary joining process, plasticized region W1 is formed on the side surfaces of base member 2 and lid plate 5.
As shown in fig. 13B, the primary welding step is a step of performing friction stir welding on the overlapped portion J1 using the primary welding rotary tool F. The tip side pin F3 of the rotating primary welding rotary tool F is inserted from the front face 5a of the cover plate 5, and the primary welding rotary tool F is relatively moved along the longitudinal direction of the groove 3 to perform friction stir welding on the overlapped part J1. The movement path of the rotary tool F for final joining is set so that the plastic fluidizing material does not flow into the groove 3.
In the primary joining step, friction stir joining is performed while the front face 5a of the lid plate 5 is pressed by the outer periphery of the base end side pin F2. In the primary joining step, friction stir joining is performed in a state where the outer peripheral surface of the base-end side pin F2 is brought into contact with the front surface 5a of the lid plate 5 and the tip-end side pin F3 is brought into contact with both the base member 2 and the lid plate 5. The insertion depth of the base end side pin F2 and the tip end side pin F3 may be set as appropriate within a range in which the outer peripheral surface of the base end side pin F2 can press the front surface 5a of the lid plate 5. In the present embodiment, the vicinity of the central portion in the height direction of the outer peripheral surface of the base end side pin F2 is set to contact the front surface 5a of the lid plate 5, and the tip end side pin F3 is set to contact the base member 2. Substantially the same effect as in the first embodiment can be obtained.
The heat-conducting plate 1B can be easily manufactured even in a form in which the cover plate 5 having a large plate thickness is placed on the front surface 2a of the base member 2 without providing the cover groove 4 as in the method for manufacturing a heat-conducting plate of the third embodiment. In addition, by performing the temporary joining step, the base member 2 and the lid plate 5 can be prevented from being cracked when the primary joining step is performed.
In the temporary joining step, the plasticized region W1 may be formed intermittently by the temporary joining rotating tool G by performing friction stirring discontinuously. In the temporary joining step, the overlapped portion J1 may be joined by welding. Further, the temporary joining step and the main joining step may be performed using a socket as in the first embodiment.
In the present embodiment, the distal end of the distal end side pin F3 is set to be pushed in to the position reaching the base member 2, but may be set to be not reaching the base member 2, that is, the insertion depth may be set so that the outer peripheral surface of the base end side pin F2 contacts the front surface 5a of the lid plate 5, and both the base end side pin F2 and the distal end side pin F3 contact only the lid plate 5. In this case, the overlapped portion J1 is plastically fluidized by frictional heat generated by the contact of the base end side pin F2 and the tip end side pin F3 with the lid plate 5, and the overlapped portion J1 is joined.
In the present embodiment, the primary welding rotary tool F is inserted from the front surface 5a of the lid plate 5, but the primary welding rotary tool F may be inserted from the rear surface 2b of the base member 2 to friction stir the overlapped part J1. In this case, the outer peripheral surface of the base end side pin F2 may be brought into contact with the back surface 2b of the base member 2, and the tip side pin F2 may be pressed into a position in contact with both the base member 2 and the lid plate 5, or the tip side pin F2 may be pressed into a position in contact with only the base member 2.
[ fourth embodiment ]
Next, a fourth embodiment of the present invention will be explained. The method of manufacturing the heat-conducting plate of the fourth embodiment is different from the third embodiment in that the concave portion 20 including the large concave is formed.
In the method of manufacturing a heat transfer plate according to the fourth embodiment, a preparation step, a recess closing step, a temporary bonding step, and a primary bonding step are performed.
As shown in fig. 14A, the preparation step is a step of preparing the base member 2. A recess 20 is formed in the front surface 2a of the base member 2. The recess 20 is a much larger depression than the groove 3.
The recess closing step (closing step) is a step of placing the cover 5 on the front surface 2a of the base member 2 and covering the upper side of the recess 20. In the recess closing process, the front surface 2a of the base member 2 is overlapped with the rear surface 5b of the lid plate 5 to form an overlapped portion J1. As shown in fig. 14B, the temporary bonding step and the main bonding step are the same as those in the third embodiment, and therefore, detailed description thereof is omitted. Thereby forming the heat conductive plate 1C.
The method of manufacturing the heat transfer plate according to the fourth embodiment can provide substantially the same effects as those of the third embodiment. Further, according to the fourth embodiment, even in the case where the cover plate 5 having a larger thickness is placed including the recess 20 larger than the groove 3, the heat conductive plate 1C can be easily formed.
In the present embodiment, the tip of the tip side pin F3 is set to be pushed in to the position reaching the base member 2, but may be set not to reach the base member 2, that is, the outer peripheral surface of the base end side pin F2 may be set to contact the front surface 5a of the lid plate 5, and the tip of the tip side pin F3 may be pushed in to the position where the base end side pin F2 and the tip side pin F3 are in contact with only the lid plate 5, so that the overlapped part J1 is friction-stirred. In this case, the base member 2 and the lid plate 5 are plastically fluidized by frictional heat generated by the contact between the base end side pin F2 and the tip end side pin F3 and the lid plate 5, and the overlapping portion J1 is joined.
In the present embodiment, the primary welding rotary tool F is inserted from the front surface 5a of the lid plate 5, but the primary welding rotary tool F may be inserted from the rear surface 2b of the base member 2 to friction stir the overlapped part J1. In this case, the friction stirring may be performed by bringing the outer peripheral surface of the base end side pin F2 into contact with the back surface 2b of the base member 2, and by pressing the tip side pin F3 into a position in which it contacts both the base member 2 and the lid plate 5, or by pressing the tip side pin F3 into a position in which it contacts only the base member 2.
[ fifth embodiment ]
Next, a friction stir welding method according to a fifth embodiment of the present invention will be described. The fifth embodiment is different from the other embodiments in that metal members not including flow paths such as the grooves 3 and the recesses 20 are joined to each other.
In the friction stir welding method according to the fifth embodiment, a preparation step, an overlapping step (overlapping portion forming step), a temporary welding step, and a primary welding step are performed.
As shown in fig. 15, the preparation step is a step of preparing the metal members 31 and 32. The metal members 31 and 32 are plate-shaped metal members. The type of the metal members 31 and 32 may be appropriately selected from metals capable of friction stirring. For example, the metal member 32 into which the primary welding rotary tool F is inserted may be made of a material having a hardness lower than that of the metal member 31.
The overlapping step (overlapping portion forming step) is a step of overlapping the metal members 31 and 32. In the overlapping step, the back surface 32b of the metal member 32 is overlapped with the front surface 31a of the metal member 31 to form an overlapped portion J1.
The temporary joining step is a step of joining the overlapped portion J1 in advance. According to the present embodiment, in the temporary joining step, the rotary tool G for temporary joining is inserted from the side surface of the metal members 31 and 32 to friction stir join the overlapped portion J1. After the temporary joining process, plasticized regions W1 are formed on the side surfaces of the metal members 31, 32.
The primary welding step is a step of performing friction stir welding on the overlapped portion J1 using the primary welding rotary tool F. In the present embodiment, the primary joining rotary tool F is inserted perpendicularly from the front surface 32a of the metal member 32, and the tip end of the tip-side pin F3 is set to enter the metal member 31. The primary welding step is a step of performing friction stir welding on the overlapped portion J1 using the primary welding rotary tool F. The tip side pin F3 of the rotating primary welding rotary tool F is inserted from the front surface 32a of the metal member 32, and the primary welding rotary tool F is relatively moved to friction stir weld the overlapped part J1. In the primary joining step, friction stir joining is performed while the outer peripheral surface of the base end side pin F2 is pressed against the front surface 32a of the metal member 32. In the primary joining step, friction stir joining is performed while the outer peripheral surface of the base-end side pin F2 is brought into contact with the front surface 32a of the metal member 32 and while the tip-end side pin F3 is brought into contact with both the metal members 31 and 32. Thereby forming composite sheet 1D.
According to the friction stir welding method of the fifth embodiment, the composite plate 1D in which the flow path is not provided can be easily formed. According to the friction stir welding method of the fifth embodiment, substantially the same effects as those of the third embodiment can be obtained.
Further, by performing the temporary joining step, it is possible to prevent the metal members 31 and 32 from being cracked when the primary joining step is performed.
In the temporary joining step, the plasticized region W1 may be formed intermittently by the temporary joining rotating tool G by performing friction stirring discontinuously. In the temporary joining step, the overlapped portion J1 may be joined by welding. Further, the temporary joining step and the main joining step may be performed using a socket as in the first embodiment.
As shown in fig. 16, the friction stirring may be performed by setting the distal-side pin F3 not to reach the metal member 31, that is, by setting the outer peripheral surface of the base-side pin F2 to contact the front surface 32a of the metal member 32 and by setting the base-side pin F2 and the distal-side pin F3 to contact only the metal member 32, during the main joining step. In this case, the plasticized region W is brought into contact with the overlapping portion J1, whereby the metal members 31 and 32 can be joined to each other. That is, the metal members 31 and 32 are plastically fluidized by frictional heat generated by the contact between the base end side pin F2 and the tip end side pin F3 and the metal member 32, and the overlapping portion J1 can be joined. Thereby forming composite sheet 1E.
(symbol description)
1, a heat conducting plate;
2a base member;
3, grooves;
4, covering the groove;
5, covering a plate;
6 a pipe for heat medium;
10a socket piece;
20 a recess;
31a metal member;
32a metal member;
f a rotating tool (rotating tool) for final joining;
f2 base end side pin;
f3 front end side pin;
g a rotating tool for temporary bonding;
j butt joint part;
j1 overlap;
w plasticized region.
Claims (19)
1. A method of manufacturing a heat-conducting plate, comprising:
a cover plate insertion step of inserting a cover plate into a cover groove formed around a recess provided in a front surface of a base member; and
a primary welding step of performing friction stirring by relatively moving a rotary tool including a base end side pin and a tip end side pin along an abutting portion of a side wall of the lid groove and a side surface of the lid plate,
the taper angle of the base-end side pin is 135 DEG to 160 DEG and is larger than the taper angle of the tip side pin,
a step portion having a spiral shape in plan view and a step shape in side view is formed on the outer peripheral surface of the base end side pin, a step angle formed by a step bottom surface and a step side surface of the step portion is 85 DEG to 120 DEG,
a spiral groove is engraved on the outer peripheral surface of the front end side pin, the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45-90 degrees,
in the primary joining step, a tip-side pin of the rotating tool is inserted into the butting portion, and friction stirring is performed in the butting portion while pressing a plastic fluidizing material by the stepped bottom surface of the stepped portion in a state where an outer peripheral surface of the base-side pin is in contact with front surfaces of the base member and the lid plate.
2. A method of manufacturing a heat-conducting plate according to claim 1,
the method includes a temporary joining step of temporarily joining the butted portion before the primary joining step.
3. A method of manufacturing a heat-conducting plate according to claim 1,
in the primary joining step, the rotary tool is inserted so that the vicinity of the central portion of the outer peripheral surface of the base end side pin in the height direction is in contact with the front surface of the base member and the front surface of the cover plate.
4. A method of manufacturing a heat-conducting plate according to claim 1,
the method includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed.
5. A method of manufacturing a heat-conducting plate, comprising:
a heat medium pipe insertion step of inserting a heat medium pipe into a concave groove formed in a bottom surface of a lid groove provided in a front surface of a base member;
a cover plate insertion step of inserting a cover plate into the cover groove; and
a primary welding step of performing friction stirring by relatively moving a rotary tool including a base end side pin and a tip end side pin along an abutting portion of a side wall of the lid groove and a side surface of the lid plate,
the taper angle of the base-end pin is 135-160 DEG and is larger than that of the front-end pin, a step portion is formed on the outer peripheral surface of the base-end pin, the step portion is spiral in plan view and is step-shaped in side view, the step angle formed by the step bottom surface and the step side surface of the step portion is 85-120 DEG,
a spiral groove is engraved on the outer peripheral surface of the front end side pin, the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45-90 degrees,
in the primary joining step, a tip-side pin of the rotating tool is inserted into the butting portion, and friction stirring is performed in the butting portion while pressing a plastic fluidizing material by the stepped bottom surface of the stepped portion in a state where an outer peripheral surface of the base-side pin is in contact with front surfaces of the base member and the lid plate.
6. A method of manufacturing a heat-conducting plate according to claim 5,
the method includes a temporary joining step of temporarily joining the butted portion before the primary joining step.
7. A method of manufacturing a heat-conducting plate according to claim 5,
in the primary joining step, the rotary tool is inserted so that the vicinity of the central portion of the outer peripheral surface of the base end side pin in the height direction is in contact with the front surface of the base member and the front surface of the cover plate.
8. A method of manufacturing a heat-conducting plate according to claim 5,
the method includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed.
9. A method of manufacturing a heat-conducting plate, comprising:
a sealing step of overlapping the cover plate with the front surface of the base member to cover the groove or the recess formed in the front surface of the base member; and
a primary joining step of inserting a rotary tool including a base end side pin and a tip end side pin from a front surface of the cover plate and relatively moving the rotary tool along an overlapping portion of the front surface of the base member and a back surface of the cover plate,
the taper angle of the base-end side pin is 135 DEG to 160 DEG and is larger than the taper angle of the tip side pin,
a step portion having a spiral shape in plan view and a step shape in side view is formed on the outer peripheral surface of the base end side pin, a step angle formed by a step bottom surface and a step side surface of the step portion is 85 DEG to 120 DEG,
a spiral groove is engraved on the outer peripheral surface of the front end side pin, the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45-90 degrees,
in the primary joining step, the outer peripheral surface of the base-end-side pin is brought into contact with the front surface of the lid plate, the tip-end-side pin is brought into contact with both the base member and the lid plate, or only the lid plate, and friction stirring is performed at the overlapping portion while the plastic fluidizing material is pressed by the step bottom surface of the step portion.
10. A method of manufacturing a heat-conducting plate according to claim 9,
the primary joining step is preceded by a temporary joining step in which the superposed portion is temporarily joined.
11. A method of manufacturing a heat-conducting plate according to claim 9,
in the primary joining step, the rotary tool is inserted so that the vicinity of the central portion of the outer peripheral surface of the base end side pin in the height direction is in contact with the front surface of the cover plate.
12. A method of manufacturing a heat-conducting plate according to claim 9,
the method includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed.
13. A method of manufacturing a heat-conducting plate, comprising:
a sealing step of overlapping the cover plate with the front surface of the base member to cover the groove or the recess formed in the front surface of the base member; and
a primary joining step of inserting a rotary tool including a base end side pin and a tip end side pin from a rear surface of the base member and relatively moving the rotary tool along an overlapping portion of a front surface of the base member and a rear surface of the cover plate,
the taper angle of the base-end side pin is 135 DEG to 160 DEG and is larger than the taper angle of the tip side pin,
a step portion having a spiral shape in plan view and a step shape in side view is formed on the outer peripheral surface of the base end side pin, a step angle formed by a step bottom surface and a step side surface of the step portion is 85 DEG to 120 DEG,
a spiral groove is engraved on the outer peripheral surface of the front end side pin, the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45-90 degrees,
in the primary joining step, the friction stir welding of the overlapping portion is performed while pressing the plastic fluidizing material by the step bottom surface of the step portion in a state where the outer peripheral surface of the base end side pin is brought into contact with the back surface of the base member, the tip end side pin is brought into contact with both the base member and the lid plate, or only the base member.
14. A method of manufacturing a heat-conducting plate according to claim 13,
the primary joining step is preceded by a temporary joining step in which the superposed portion is temporarily joined.
15. A method of manufacturing a heat-conducting plate according to claim 13,
the method includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed.
16. A friction stir welding method for welding two metal members using a rotary tool including a base end side pin and a tip end side pin,
the taper angle of the base-end side pin is 135 DEG to 160 DEG and is larger than the taper angle of the tip side pin,
a step portion having a spiral shape in plan view and a step shape in side view is formed on the outer peripheral surface of the base end side pin, a step angle formed by a step bottom surface and a step side surface of the step portion is 85 DEG to 120 DEG,
a spiral groove is engraved on the outer peripheral surface of the front end side pin, the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45-90 degrees,
the friction stir welding method includes:
an overlapping portion forming step of forming an overlapping portion by overlapping a front surface of one of the metal members with a rear surface of the other metal member; and
a primary joining step of inserting a tip-side pin of the rotating tool from a front surface of the other metal member, and performing friction stirring of the overlapping portion while pressing a plastic fluidizing material with the step bottom surface of the step portion in a state where an outer peripheral surface of the base-side pin is brought into contact with a front surface of the other metal member, while the tip-side pin is brought into contact with both the one metal member and the other metal member, or with only the other metal member,
the hardness of the other metal member is set to be lower than the hardness of the one metal member.
17. The friction stir welding method according to claim 16,
the primary joining step is preceded by a temporary joining step in which the superposed portion is temporarily joined.
18. The friction stir welding method according to claim 16,
in the primary joining step, the rotary tool is inserted so that the vicinity of the central portion of the outer peripheral surface of the base end side pin in the height direction is in contact with the front surface of the other metal member.
19. The friction stir welding method according to claim 16,
the method includes a burr removal step of removing burrs generated by friction stirring of the rotary tool after the primary joining step is completed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018049130 | 2018-03-16 | ||
| JP2018-049130 | 2018-03-16 | ||
| PCT/JP2018/015842 WO2019176125A1 (en) | 2018-03-16 | 2018-04-17 | Method for manufacturing heat transfer plate and method for friction stir welding |
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| CN111032268A CN111032268A (en) | 2020-04-17 |
| CN111032268B true CN111032268B (en) | 2022-04-22 |
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| CN201880055213.0A Active CN111032268B (en) | 2018-03-16 | 2018-04-17 | Method for manufacturing heat conductive plate and friction stir welding method |
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| JP (1) | JP2019162660A (en) |
| CN (1) | CN111032268B (en) |
| WO (1) | WO2019176125A1 (en) |
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| JP2019058934A (en) | 2017-09-27 | 2019-04-18 | 日本軽金属株式会社 | Manufacturing method of liquid-cooled jacket |
| JP2019058933A (en) | 2017-09-27 | 2019-04-18 | 日本軽金属株式会社 | Manufacturing method of liquid-cooled jacket |
| JP6769427B2 (en) | 2017-12-18 | 2020-10-14 | 日本軽金属株式会社 | How to manufacture a liquid-cooled jacket |
| JP2019181473A (en) | 2018-04-02 | 2019-10-24 | 日本軽金属株式会社 | Liquid-cooled jacket manufacturing method |
| JP2020032429A (en) * | 2018-08-27 | 2020-03-05 | 日本軽金属株式会社 | Heat exchanger plate manufacturing method |
| JP7070389B2 (en) | 2018-12-19 | 2022-05-18 | 日本軽金属株式会社 | Joining method |
| JP2021087961A (en) * | 2019-12-02 | 2021-06-10 | 日本軽金属株式会社 | Method of manufacturing heat exchanger plate |
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- 2018-04-17 WO PCT/JP2018/015842 patent/WO2019176125A1/en active Application Filing
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| CN111032268A (en) | 2020-04-17 |
| JP2019162660A (en) | 2019-09-26 |
| WO2019176125A1 (en) | 2019-09-19 |
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