JP6201882B2 - Heat transfer plate manufacturing method and heat transfer plate - Google Patents

Description

  The present invention relates to a method for manufacturing a heat transfer plate and a heat transfer plate.

  For example, Patent Document 1 discloses a heat transfer plate including a base member, a cover plate, and a heat medium pipe. The base member has a cover groove in which the cover plate is disposed, and a concave groove formed in the bottom surface of the cover groove and in which the heat medium pipe is disposed.

  In a conventional heat transfer plate manufacturing method, a heat medium tube arranging step of arranging a heat medium tube in the concave groove of the base member, a lid plate arranging step of arranging a lid plate in the lid groove, a side wall of the lid groove, The joining process of friction-stirring the side surface of the cover plate was performed.

JP 2008-284606 A

  In the conventional method for manufacturing a heat transfer plate, there is a problem that a process of forming a cover groove in the base member and arranging the cover plate in the cover groove has to be performed, which increases the labor. Moreover, since a cover plate must be prepared in addition to the base member, there is a problem that the manufacturing cost increases.

  Then, this invention makes it a subject to provide the manufacturing method and heat exchanger plate of a heat exchanger plate which can reduce work effort, and can reduce manufacturing cost.

In order to solve the above-mentioned problems, the present invention includes an insertion step of inserting a heat medium pipe into a concave groove opened on the surface side of a base member, and a relative movement of a rotary tool with respect to both side walls of the concave groove. A friction stir step in which friction stir is performed, and in the friction stir step, the tip of the rotating tool is inserted at a position deeper than a virtual horizontal plane in contact with the upper end of the heat medium tube , and the heat medium tube The plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium pipe and the concave groove in a state in which is exposed.

According to this manufacturing method, the upper part of the heat medium pipe can be covered by flowing the plastic fluidized material into the space. That is, since it is not necessary to provide a cover plate, it is possible to save the trouble of forming the cover groove in the base member and the trouble of arranging the cover plate in the cover groove as in the prior art. Further, the material cost can be reduced by the amount that the cover plate is not provided. In addition, the plastic fluidizing material can surely flow into the space, and the upper part of the heat medium pipe can be reliably covered.

Further, the present invention provides an insertion step of inserting a heat medium pipe into a groove that opens on the surface side of the base member, and a friction that performs agitation by moving each rotary tool relative to both side walls of the groove. In the friction stirring step, the distance from the virtual vertical plane in contact with the side end of the heat medium tube to the tip of the rotary tool is set to 0 to 3 mm, and the heat medium tube is In the exposed state, the plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium pipe and the concave groove.

  According to this manufacturing method, the plastic fluidizing material can surely flow into the space, and the upper portion of the heat medium pipe can be reliably covered.

Further, the present invention provides an insertion step of inserting a heat medium pipe into a groove that opens on the surface side of the base member, and a friction that performs agitation by moving each rotary tool relative to both side walls of the groove. In the friction stirring step, when the rotating tool is set to the right rotation, the friction tool is stirred on the side wall on the left side in the traveling direction of the rotating tool, and the rotating tool is set to the left rotation. In addition, frictional stirring is performed on the side wall on the right side in the traveling direction of the rotary tool, and the heat medium pipe is exposed to the space formed by the heat medium pipe and the groove. It is characterized in that the plastic fluidized material fluidized by the flow is introduced.

  According to this manufacturing method, the plastic fluid material can easily flow into the space portion, so that the plastic fluid material can be more reliably flowed into the space portion.

  Further, it is preferable that a convex portion is provided in the vicinity of the opening of the concave groove in advance.

  According to this manufacturing method, it is possible to prevent a shortage of plastic fluid material flowing into the space.

Further, the present invention provides an insertion step of inserting a heat medium pipe into a groove that opens on the surface side of the base member, and a friction that performs agitation by moving each rotary tool relative to both side walls of the groove. An agitation step; a lid plate arrangement step of arranging a lid plate in a lid groove formed wider than the concave groove on the surface side of the base member than the concave groove after the friction agitation step; and the lid groove sidewall and viewed contains a cover plate bonding step, the performing friction stir by moving the rotary tool along the butt portion of the side surface of the cover plate, and in the friction stir process, to expose the heat medium pipe In this state, a plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium pipe and the concave groove.

  According to this manufacturing method, the heat medium pipe can be provided at a deep position of the base member by providing the cover groove and the cover plate.

The present invention also includes a base member having a concave groove and a heat medium pipe inserted into the concave groove, wherein the heat medium pipe is exposed to both side walls of the concave groove. The plastic fluidized material fluidized by frictional heat flows into the space formed by the heat medium pipe and the concave groove, and only the plastic fluidized material is used for the heat medium. The cover plate is in contact with a tube, and the base member further includes a lid groove formed wider than the concave groove on the surface side of the base member relative to the concave groove, and the lid plate is disposed in the lid groove It is preferable that frictional stirring is performed along the abutting portion between the side wall of the lid groove and the side surface of the lid plate .

  According to this configuration, the upper part of the heat medium pipe can be covered by flowing the plastic fluid material into the space. That is, since it is not necessary to provide a cover plate, it is possible to save the trouble of forming the cover groove in the base member and the trouble of arranging the cover plate in the cover groove as in the prior art. Further, the material cost can be reduced by the amount that the cover plate is not provided.

Further, by providing the lid groove and the lid plate, the heat medium pipe can be provided at a deep position of the base member.

  According to the heat transfer plate manufacturing method and the heat transfer plate according to the present invention, it is possible to reduce the labor and the manufacturing cost.

It is a perspective view of the heat exchanger plate concerning a first embodiment of the present invention. It is II sectional drawing of FIG. It is sectional drawing which shows the insertion process of 1st embodiment, Comprising: (a) shows before insertion, (b) shows after insertion. (A) is a top view which shows the 1st friction stirring process of 1st embodiment, (b) is II-II sectional drawing of (a). (A) is a top view which shows the 2nd friction stirring process of 1st embodiment, (b) is III-III sectional drawing of (a). It is a figure which shows the modification of 1st embodiment, Comprising: (a) shows an insertion process, (b) shows a 1st friction stirring process. It is a perspective view of the heat exchanger plate which concerns on 2nd embodiment of this invention. It is IV-IV sectional drawing of FIG. (A) is sectional drawing which shows the insertion process of 2nd embodiment, (b) is sectional drawing which shows a 2nd friction stirring process. It is sectional drawing which shows the cover plate joining process of 2nd embodiment.

[First embodiment]
A first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the heat transfer plate 1 according to the first embodiment includes a base member 2 and a heat medium pipe 3. The heat transfer plate 1 is used as a cold plate or a hot plate by allowing the heat medium to flow through the heat medium pipe 3. Note that “upper and lower”, “left and right”, and “front and rear” of the heat transfer plate 1 in the following description follow the arrows in FIG.

  The base member 2 is a metal plate member. The material of the base member 2 is not particularly limited as long as it is a metal capable of friction stir, but may be appropriately selected from, for example, aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy and the like. In the center of the base member 2, a concave groove 10 that communicates from the side surface 2 c to the side surface 2 d is formed.

  The width of the groove 10 is substantially equal to the outer diameter of the heat medium pipe 3. Further, the depth of the concave groove 10 is larger than the outer diameter of the heat medium pipe 3.

  The heat medium pipe 3 is a metallic tubular member. The material of the heat medium pipe 3 is not particularly limited as long as it is a metal having high heat conductivity, but is made of copper in this embodiment. Although the heat medium pipe 3 is cylindrical in this embodiment, it may be square.

  As shown in FIG. 2, the upper side of the heat medium pipe 3 is covered with a left plasticizing region W1 and a right plasticizing region W2. The left plasticizing region W1 and the right plasticizing region W2 are formed in the base member 2 along the extending direction of the heat medium pipe 3.

  The left plasticizing region W1 includes a base end W1a formed on the left side of the groove 10 in the base member 2, and a front end W1b that is continuous with the base end W1a and covers the upper left side of the heat medium pipe 3. ing. The right plasticizing region W2 includes a base end W2a formed on the right side of the groove 10 in the base member 2 and a front end W2b that is continuous with the base end W2a and covers the upper right side of the heat medium pipe 3. ing.

  Next, the manufacturing method of a heat exchanger plate is demonstrated. In the method for manufacturing a heat transfer plate according to the present embodiment, a preparation process, an insertion process, a first friction stirring process, and a second friction stirring process are performed.

  The preparation step is a step of forming the concave groove 10 in the base member 2. As shown to (a) of FIG. 3, in the preparatory process, the surface 2a is cut, for example using an end mill etc., and the ditch | groove 10 is formed. The concave groove 10 includes a bottom portion 10a formed of a curved surface, a first side wall 10b that is continuous with the bottom portion 10a and forms a left side wall, and a second side wall 10c that is continuous with the bottom portion 10a and forms a right side wall. ing.

  The curvature radius of the bottom portion 10a is equal to the curvature radius of the heat medium pipe 3. The width of the groove 10 is substantially equal to the outer diameter of the heat medium pipe 3. Although the base member 2 is formed by cutting in this embodiment, the base member 2 in which the concave groove 10 is formed by die casting may be used.

  The insertion step is a step of inserting the heat medium pipe 3 into the concave groove 10 of the base member 2. As shown in FIG. 3B, when the heat medium pipe 3 is inserted into the concave groove 10, the outer peripheral surface of the heat medium pipe 3 comes into surface contact with the bottom 10a. Further, when the heat medium pipe 3 is inserted into the groove 10, a space X is formed by the outer peripheral surface of the heat medium pipe 3 and the groove 10 (the first side wall 10b and the second side wall 10c).

  The first friction stirring step is a step of friction stirring the left side of the groove 10 in the base member 2. As shown to (a) and (b) of FIG. 4, the rotation tool G is used in a 1st friction stirring process. The rotary tool G includes a shoulder portion G1 and a stirring pin G2. The shoulder portion G1 has a cylindrical shape. The stirring pin G2 hangs from the lower end surface of the shoulder portion G1. The stirring pin G2 is tapered and has a truncated cone shape. A spiral groove is formed on the outer peripheral surface of the stirring pin G2.

  In the first friction stirring step, as shown in FIG. 4A, the start position Sp is set on the surface 2 a of the base member 2 in the vicinity of the side surface 2 c and in the vicinity of the left side of the groove 10. When the rotating tool G rotated to the right is inserted into the start position Sp, the rotating tool G is relatively moved along the first side wall 10b substantially parallel to the first side wall 10b.

  As shown in FIG. 4B, in the first friction stirring step, the first side wall 10b of the groove 10 is formed in a state where the heat medium pipe 3 is exposed in a plan view (a state where no cover plate is disposed). On the other hand, friction stirring is performed. In the first friction stirring process, the base member 2 on the left side of the groove 10 is plastically fluidized and hardened by the frictional heat between the rotating rotary tool G and the base member 2 to form the base end portion W1a. Further, the plastic fluidized material fluidized by frictional heat flows into the space X, so that the tip W1b is formed. More specifically, the tip W1b is formed by the plastic fluidizing material flowing into a space formed by the first side wall 10b and the outer peripheral surface of the heat medium pipe 3, and then hardening. When the rotary tool G is relatively moved to the end position (not shown) set near the side surface 2d of the base member 2, the rotary tool G is detached from the base member 2.

  The second friction stirring step is a step of friction stirring the right side of the groove 10 in the base member 2. As shown in FIGS. 5A and 5B, the rotary tool G is used in the second friction stirring step. In the second friction stirring step, a start position (not shown) is set in the vicinity of the side surface 2 d on the surface 2 a of the base member 2 and in the vicinity of the right side of the groove 10. When the rotating tool G rotated to the right is inserted into the start position, the rotating tool G is relatively moved along the second side wall 10c substantially parallel to the second side wall 10c.

  As shown in FIG. 5B, in the second friction stirring step, the heat medium pipe 3 is exposed in a plan view (in a state where the cover plate is not disposed), and the second side wall 10c of the groove 10 is formed. On the other hand, friction stirring is performed. In the second friction agitation process, the base member 2 on the right side of the groove 10 is plastically fluidized and hardened by frictional heat between the rotating rotary tool G and the base member 2 to form the base end portion W2a. Further, the plastic fluidized material fluidized by the frictional heat flows into the space X, so that the tip W2b is formed. More specifically, the distal end portion W2b is formed by hardening the plastic fluidizing material after flowing into the space formed by the second side wall 10c and the outer peripheral surface of the heat medium pipe 3. When the rotary tool G is relatively moved to the end position Ep set in the vicinity of the side surface 2 c of the base member 2, the rotary tool G is detached from the base member 2.

  As shown in FIG. 4B, in this embodiment, both the first friction stirring process and the second friction stirring process push the lower end surface of the shoulder portion G1 about several millimeters from the surface 2a of the base member 2 to perform friction. Stirring is performed. Further, the insertion depth of the rotary tool G (stirring pin G2) of the present embodiment is set at a position deeper than the virtual horizontal plane P1 in contact with the upper end of the heat medium pipe 3.

  In addition, as shown in FIG. 4B, in this embodiment, in the first friction stirring process and the second friction stirring process, a virtual vertical plane that is in contact with the side end of the heat medium pipe 3 from the tip of the stirring pin G2. The distance L to P2 is set to 0 to 3 mm.

  In the present embodiment, as described above, the insertion depth and insertion position of the rotary tool G (the distance L from the rotary tool G to the heat medium pipe 3) are set, but the present invention is not limited to this. What is necessary is just to set suitably the insertion depth and insertion position of the rotary tool G in a 1st friction stirring process and a 2nd friction stirring process so that the plastic fluid material plasticized and fluidized at least by friction heat may flow in into the space part X.

  Further, in the first friction stirring step and the second friction stirring step, the insertion depth and the insertion position of the rotary tool G are covered with the left plasticization region W1 and the right plasticization region W2 in a well-balanced manner. It is preferable to set so that the Thereby, the thermal conductivity on both sides of the heat medium pipe 3 can be made uniform. In the first friction agitation step and the second friction agitation step, it is preferable to set the insertion depth and the insertion position of the rotary tool G so that the tip portions W1b and W2b are in contact with each other. Thereby, it is possible to prevent a gap from being generated on the surface of the heat transfer plate 1.

  In addition, although the extraction hole of the stirring pin G2 is formed in the surface 2a of the base member 2 by pulling out the rotary tool G at the end position, the extraction hole may be repaired by performing overlay welding, for example. Moreover, you may cut out the burr | flash which generate | occur | produced by friction stirring after the 1st friction stirring process and the 2nd friction stirring process are complete | finished.

  According to the method for manufacturing a heat transfer plate according to the present embodiment described above, the plastic fluidized material is caused to flow into the space X to provide the left plasticizing region W1 and the right plasticizing region W2, and thereby the heat medium pipe 3 is provided. The upper part can be covered. In other words, the heat medium tube 3 is not covered with the cover plate, but is covered only with the concave groove 10 and the tip portions W1b and W2b. That is, in the method for manufacturing a heat transfer plate according to the present embodiment, it is not necessary to provide a cover plate. Therefore, there is no need to form a cover groove in the base member 2 or to place a cover plate in the cover groove as in the past. It can be omitted. Further, the material cost can be reduced by the amount that the cover plate is not provided.

  In the first friction agitation step and the second friction agitation step, the tip of the rotary tool G (agitating pin G2) is inserted at a position deeper than the virtual horizontal plane P1 that is in contact with the upper end of the heat medium pipe 3, so that the space portion The plastic fluidized material can surely flow into X.

  In the first friction stirring step and the second friction stirring step, the distance from the virtual vertical plane P2 in contact with the side end of the heat medium pipe 3 to the tip of the rotary tool G (stirring pin G2) is set to 0 to 3 mm. Thus, the plastic fluidized material can surely flow into the space X.

  Further, the rotation direction and the traveling direction of the rotary tool G may be set as appropriate. However, when the rotary tool G is rotated to the right as in the present embodiment, the friction stirrer is applied to the side wall located on the left side in the traveling direction of the rotary tool G. It is preferable to carry out. Thereby, since the plastic fluidized material easily flows from the base member 2 side to the space X, the plastic fluidized material can flow into the space X more reliably.

  In addition, when rotating the rotation tool G counterclockwise, it is preferable to perform friction stirring on the side wall located on the right side in the traveling direction of the rotation tool G.

  While the first embodiment of the present invention has been described above, design changes can be made as appropriate without departing from the spirit of the present invention. FIG. 6 is a diagram showing a modification of the first embodiment, in which (a) shows an insertion step and (b) shows a first friction stirring step.

  As shown in FIG. 6A, in the modified example, the convex portions 20 are provided on the surface 2 a of the base member 2 and on both sides of the concave groove 10. The convex portion 20 is formed in a rectangular cross section over the extending direction of the concave groove 10. The convex portion 20 may be separated from the concave groove 10 as long as it is in the vicinity of the concave groove 10. Further, the shape of the convex portion 20 is not particularly limited.

  As shown in FIG. 6 (b), in the first friction stirring step, friction stirring is performed in the same manner as in the first friction stirring step of the first embodiment while inserting the rotary tool G from above the convex portion 20. . Although not specifically shown, the second friction stirring step is also performed in the same manner as the first friction stirring step of the modification.

  According to the modification described above, the amount of metal plastically fluidized by frictional heat can be increased by providing the convex portion 20. Thereby, it is possible to prevent the plastic fluid material from being insufficient, and it is possible to reliably cause the plastic fluid material to flow into the space portion X.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The heat transfer plate 1A according to the second embodiment is different from the first embodiment in that the heat medium pipe 3 can be embedded at a deeper position than the first embodiment. In the second embodiment, the description will focus on the parts that are different from the first embodiment.

  As shown in FIG. 7, the heat transfer plate 1 </ b> A includes a base member 2 </ b> A, a heat medium tube 3, and a lid plate 4. The base member 2 </ b> A has a lid groove 30 and a concave groove 10 formed in the bottom surface 30 a of the lid groove 30. The heat medium pipe 3 is disposed in the concave groove 10, and the lid plate 4 is disposed in the lid groove 30.

  As shown in FIG. 8, the upper part of the heat medium pipe 3 is covered with a left plasticizing region W1 and a right plasticizing region W2. The left plasticizing region W1 and the right plasticizing region W2 are formed along the extending direction of the heat medium pipe 3 in the base member 2A.

  The left plasticizing region W1 includes a base end W1a formed on the left side of the groove 10 in the base member 2, and a front end W1b that is continuous with the base end W1a and covers the upper left side of the heat medium pipe 3. ing. The right plasticizing region W2 includes a base end W2a formed on the right side of the groove 10 in the base member 2 and a front end W2b that is continuous with the base end W2a and covers the upper right side of the heat medium pipe 3. ing.

  The butted portions J3 and J4 between the side surface of the cover plate 4 and the side wall of the cover groove 30 are joined by friction stirring. Plasticized regions W3 and W4 are formed in the butted portions J3 and J4, respectively.

  Next, the manufacturing method of the heat exchanger plate which concerns on 2nd embodiment is demonstrated. In the manufacturing method of the heat transfer plate according to the present embodiment, a preparation step, an insertion step, a first friction stirring step, a second friction stirring step, a lid plate arranging step, and a lid plate joining step are performed.

  The preparation step is a step of forming the cover groove 30 and the concave groove 10 in the base member 2A as shown in FIG. In the preparation step, for example, the surface 2 a is cut using an end mill or the like to form the lid groove 30, and the concave groove 10 is formed in the lid groove 30. The lid groove 30 includes a bottom surface 30a and side walls 30b and 30c rising from the bottom surface 30a. The lid groove 30 is formed in a rectangular cross section. The width of the lid groove 30 is substantially equal to the width of the lid plate 4. The depth of the lid groove 30 is substantially equal to the height of the lid plate 4.

  The concave groove 10 is formed on the bottom surface 30 a of the lid groove 30. The width of the concave groove 10 is smaller than the width of the lid groove 30. The concave groove 10 includes a bottom portion 10a formed of a curved surface, a first side wall 10b that is continuous with the bottom portion 10a and forms a left side wall, and a second side wall 10c that is continuous with the bottom portion 10a and forms a right side wall. ing.

  The lid plate 4 is a plate-like member having a rectangular cross section. The material of the cover plate 4 is not particularly limited, but in the present embodiment, a material equivalent to the base member 2A is used. The lid plate 4 is formed in a shape that is arranged in the lid groove 30 without a gap.

  Since the insertion step, the first friction stirring step, and the second friction stirring step are the same as those in the first embodiment, description thereof is omitted. If the 2nd friction stirring process is performed, a surface cutting process will be performed so that the bottom surface 30a, the surface of the left side plasticization area | region W1, and the surface of the right side plasticization area | region W2 may become flush | level.

  The lid plate placement step is a step of placing the lid plate 4 in the lid groove 30. When the lid plate 4 is disposed in the lid groove 30, the side surface 4c of the lid plate 4 and the side wall 30b of the lid groove 30 are abutted to form an abutting portion J3 (see FIG. 10). Further, the side face 4d of the lid plate 4 and the side wall 30c of the lid groove 30 are abutted to form an abutting portion J4 (see FIG. 10). Since the surface cutting process is performed, the lower surface 4b of the cover plate 4 is in surface contact with the bottom surface 30a after the surface cutting process, the surface of the left plasticizing region W1, and the surface of the right plasticizing region W2.

  The lid plate joining step is a step of joining the base member 2A and the lid plate 4 by friction stirring. As shown in FIG. 10, in the lid plate joining step, the friction stir welding is performed by relatively moving the rotary tool G that rotates along the abutting portions J3 and J4. Plasticizing regions W3 and W4 are formed on the movement trajectory of the rotary tool G, respectively. The insertion depth of the rotary tool G may be set as appropriate, but it is preferably set so that the entire abutting portions J3 and J4 in the depth direction are frictionally stirred as in this embodiment.

  Even the heat transfer plate 1 </ b> A according to the second embodiment described above can achieve substantially the same effect as the first embodiment. Moreover, the heat medium pipe | tube 3 can be provided in a deeper position than 1st embodiment by providing the cover plate 4 and the cover groove | channel 30. FIG. Further, by performing a surface cutting process after the second friction stirring process, the lower surface 4b of the cover plate 4, the bottom surface 30a of the cover groove 30, the surface of the left plasticized region W1, and the surface of the right plasticized region W2 are brought into surface contact. be able to. Thereby, watertightness and airtightness can be improved.

  Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, in the first friction stirring step, the second friction stirring step, and the lid plate joining step, a tab material may be used. By using the tab material, it is possible to easily set the start position and the end position of friction stirring. Further, the side surfaces 1c and 1d of the heat transfer plate can be finished finely by cutting the tab material after the friction stirring.

DESCRIPTION OF SYMBOLS 1 Heat-transfer plate 2 Base member 2A Base member 3 Heat medium pipe 4 Cover plate 10 Groove 10a Bottom surface 10b First side wall (side wall)
10c Second side wall (side wall)
20 Convex part 30 Cover groove G Rotating tool W1, W2 Plasticization region

Claims (6)

An insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A friction agitation step of performing friction agitation by relatively moving a rotary tool with respect to both side walls of the concave groove, and
In the friction stirring step, the tip of the rotary tool is inserted at a position deeper than a virtual horizontal plane in contact with the upper end of the heat medium pipe,
Heat transfer is characterized in that a plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium tube and the concave groove with the heat medium tube exposed. A manufacturing method of a board. An insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A friction agitation step of performing friction agitation by relatively moving a rotary tool with respect to both side walls of the concave groove, and
In the friction stirring step, the distance from the virtual vertical surface in contact with the side end of the heat medium pipe to the tip of the rotary tool is set to 0 to 3 mm,
Heat transfer is characterized in that a plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium tube and the concave groove with the heat medium tube exposed. A manufacturing method of a board. An insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A friction agitation step of performing friction agitation by relatively moving a rotary tool with respect to both side walls of the concave groove, and
In the friction stirring step,
When setting the rotation tool to right rotation,
Friction stirring is performed on the side wall on the left in the traveling direction of the rotating tool,
When setting the rotation tool to left rotation,
While performing frictional stirring on the side wall on the right side of the traveling direction of the rotating tool,
Heat transfer is characterized in that a plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium tube and the concave groove with the heat medium tube exposed. A manufacturing method of a board. The method for producing a heat transfer plate according to any one of claims 1 to 3 , wherein a convex portion is provided in the vicinity of the opening of the concave groove in advance. An insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A friction agitation step of performing friction agitation by relatively moving a rotary tool with respect to both side walls of the groove,
After the friction stirring step,
A lid plate placement step of placing a lid plate in a lid groove formed wider than the concave groove on the surface side of the base member relative to the concave groove;
A lid plate joining step of performing frictional stirring by moving the rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate ,
In the friction stirring step, the plastic fluidized material fluidized by frictional heat is caused to flow into a space formed by the heat medium tube and the concave groove with the heat medium tube exposed. The manufacturing method of the heat exchanger plate characterized by these. A base member having a concave groove;
A heat medium pipe inserted into the concave groove,
Friction stirring is performed in a state where the heat medium pipe is exposed to both side walls of the concave groove, thereby fluidizing the space formed by the heat medium pipe and the concave groove by frictional heat. The plastic fluidized material is introduced, and only the plastic fluidized material is in contact with the heat medium pipe ,
The base member further includes a lid groove formed wider than the concave groove on the surface side of the base member relative to the concave groove,
A lid plate disposed in the lid groove;
Friction stirring is performed along the abutting portion between the side wall of the lid groove and the side surface of the lid plate.

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