JP5573940B2

JP5573940B2 - Manufacturing method of heat transfer plate

Info

Publication number: JP5573940B2
Application number: JP2012287792A
Authority: JP
Inventors: 勇人佐藤
Original assignee: Nippon Light Metal Co Ltd
Current assignee: Nippon Light Metal Co Ltd
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2014-08-20
Anticipated expiration: 2028-09-24
Also published as: JP2013091104A

Description

本発明は、例えば熱交換器や加熱機器あるいは冷却機器などに用いられる伝熱板の製造方法に関する。 The present invention relates to a method for manufacturing a heat transfer plate used in, for example, a heat exchanger, a heating device, a cooling device, or the like.

熱交換、加熱あるいは冷却すべき対象物に接触し又は近接して配置される伝熱板は、その本体であるベース部材に、例えば高温液や冷却水などの熱媒体を循環させる凹溝を備えている。かかる伝熱板の製造方法は、例えば、特許文献１に記載された方法が知られている。図２０は、特許文献１に係る伝熱板の製造方法によって形成された伝熱板を示した断面図である。 A heat transfer plate arranged in contact with or close to an object to be heat exchanged, heated or cooled is provided with a concave groove that circulates a heat medium such as high-temperature liquid or cooling water in a base member that is a main body thereof. ing. As a method for manufacturing such a heat transfer plate, for example, a method described in Patent Document 1 is known. FIG. 20 is a cross-sectional view showing a heat transfer plate formed by the method of manufacturing a heat transfer plate according to Patent Document 1.

特許文献１に係る伝熱板１００は、表面に開口する断面視矩形の蓋溝１０６と蓋溝１０６の底面に開口する凹溝１０８とを有するベース部材１０２と、凹溝１０８に挿入される熱媒体用管１１６と、蓋溝１０６に挿入される蓋板１１０と、を備えている。伝熱板１００は、蓋溝１０６における両側壁と蓋板１１０の両側面とが突き合わされたそれぞれの突合部Ｊ，Ｊに沿って摩擦攪拌接合を行って一体成形されている。これにより、伝熱板１００の突合部Ｊ，Ｊには、摩擦攪拌によって塑性化された塑性化領域Ｗ，Ｗがそれぞれ形成されている。 A heat transfer plate 100 according to Patent Document 1 includes a base member 102 having a lid groove 106 having a rectangular cross-sectional view opened on the surface and a groove 108 opened on the bottom surface of the cover groove 106, and heat inserted into the groove 108. A medium tube 116 and a lid plate 110 inserted into the lid groove 106 are provided. The heat transfer plate 100 is integrally formed by performing friction stir welding along the respective abutting portions J and J where the both side walls of the lid groove 106 and the both side surfaces of the lid plate 110 are abutted. Thus, plasticized regions W and W plasticized by friction stirring are formed in the abutting portions J and J of the heat transfer plate 100, respectively.

特開２００４−３１４１１５号公報JP 2004-314115 A

かかる伝熱板の製造方法によって形成された伝熱板１００は、ベース部材１０２の表面から摩擦攪拌を行うため、熱収縮によって塑性化領域Ｗ，Ｗが縮むと、伝熱板が反って撓んでしまうという問題があった。
このような観点から、本発明は、平坦性の高い伝熱板を製造することができる伝熱板の製造方法を提供することを課題とする。 Since the heat transfer plate 100 formed by such a method of manufacturing a heat transfer plate performs frictional stirring from the surface of the base member 102, when the plasticized regions W and W are contracted by heat shrinkage, the heat transfer plate is warped and bent. There was a problem that.
From such a viewpoint, an object of the present invention is to provide a method of manufacturing a heat transfer plate that can manufacture a heat transfer plate with high flatness.

このような課題を解決する本発明に係る伝熱板の製造方法は、ベース部材の表面側に開口する凹溝の周囲に形成された蓋溝に、蓋板を挿入する蓋溝閉塞工程と、前記蓋溝の側壁と前記蓋板の側面との突合部に沿って接合用回転ツールを相対移動させて摩擦攪拌を行う接合工程と、前記接合工程により形成された前記ベース部材の裏面側に凸となる反りを、前記ベース部材の表面側に引張応力が発生するような曲げモーメントを作用させることで矯正する矯正工程と、を含み、前記矯正工程では、前記ベース部材を衝打具で衝打することにより、前記反りを矯正することを特徴とする。
また、本発明に係る伝熱板の製造方法は、ベース部材の表面側に開口する蓋溝の底面に形成された凹溝に、熱媒体用管を挿入する熱媒体用管挿入工程と、前記蓋溝に蓋板を挿入する蓋溝閉塞工程と、前記蓋溝の側壁と前記蓋板の側面との突合部に沿って接合用回転ツールを相対移動させて摩擦攪拌を行う接合工程と、前記接合工程により形成された前記ベース部材の裏面側に凸となる反りを、前記ベース部材の表面側に引張応力が発生するような曲げモーメントを作用させることで矯正する矯正工程と、を含み、前記矯正工程では、前記ベース部材を衝打具で衝打することにより、前記反りを矯正することを特徴とする。 The method of manufacturing a heat transfer plate according to the present invention that solves such a problem includes a lid groove closing step of inserting a lid plate into a lid groove formed around a concave groove that opens on the surface side of the base member, A joining step of relatively moving the joining rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate, and friction stir, and projecting to the back side of the base member formed by the joining step And correcting the warpage by applying a bending moment that generates a tensile stress on the surface side of the base member. In the correction step, the base member is hit with a hitting tool. By doing so, the warping is corrected.
Further, the method for manufacturing a heat transfer plate according to the present invention includes a heat medium tube insertion step of inserting a heat medium tube into a concave groove formed on a bottom surface of a lid groove opened on a surface side of the base member, A lid groove closing step of inserting a lid plate into the lid groove, a joining step of performing frictional stirring by relatively moving the joining rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate, A correction step of correcting a warp that is convex on the back surface side of the base member formed by the bonding step by applying a bending moment that generates a tensile stress on the front surface side of the base member, and In the correcting step, the warp is corrected by hitting the base member with a hitting tool.

かかる製造方法によれば、矯正工程において前記ベース部材の表面側に引張応力が発生するような曲げモーメントを作用させることにより、前記接合工程により形成された前記ベース部材の裏面側に凸となる反りを矯正し、伝熱板の平坦性を高めることができる。 According to this manufacturing method, a warp that protrudes on the back surface side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member in the straightening step. It is possible to improve the flatness of the heat transfer plate.

また、前記接合工程において、前記熱媒体用管の周囲に形成された空隙部に、摩擦熱によって流動化された塑性流動材を流入させることが好ましい。かかる製造方法によれば、伝熱板の内部に形成される空隙部を小さくすることができるため、水密性及び気密性の高い伝熱板を製造することができる。 In the joining step, it is preferable that a plastic fluidized material fluidized by frictional heat flows into a gap formed around the heat medium pipe. According to this manufacturing method, since the gap formed in the heat transfer plate can be reduced, a heat transfer plate with high water tightness and air tightness can be manufactured.

また、本発明に係る伝熱板の製造方法は、ベース部材の表面側に開口する凹溝に蓋板を挿入する蓋板挿入工程と、前記凹溝に沿って接合用回転ツールを相対移動させて摩擦攪拌を行う接合工程と、前記接合工程により形成された前記ベース部材の裏面側に凸となる反りを、前記ベース部材の表面側に引張応力が発生するような曲げモーメントを作用させることで矯正する矯正工程と、を含み、前記矯正工程では、前記ベース部材を衝打具で衝打することにより、前記反りを矯正することを特徴とする。
また、本発明に係る伝熱板の製造方法は、ベース部材の表面側に開口する凹溝に、熱媒体用管を挿入する熱媒体用管挿入工程と、前記凹溝に蓋板を挿入する蓋板挿入工程と、前記凹溝に沿って接合用回転ツールを相対移動させて摩擦攪拌を行う接合工程と、前記接合工程により形成された前記ベース部材の裏面側に凸となる反りを、前記ベース部材の表面側に引張応力が発生するような曲げモーメントを作用させることを特徴とする。 Further, the method for manufacturing a heat transfer plate according to the present invention includes a lid plate insertion step of inserting a lid plate into a concave groove opened on the surface side of the base member, and a relative rotation of the bonding rotary tool along the concave groove. By applying a bending moment that causes a tensile stress to be generated on the surface side of the base member, a joining step in which friction stirring is performed, and a warp convex on the back side of the base member formed by the joining step are applied. A correction step of correcting, wherein in the correction step, the warp is corrected by hitting the base member with a hitting tool.
Moreover, the manufacturing method of the heat exchanger plate according to the present invention includes a heat medium tube insertion step of inserting a heat medium tube into the concave groove opened on the surface side of the base member, and a lid plate inserted into the concave groove. A lid plate insertion step, a joining step of performing frictional stirring by relatively moving a joining rotary tool along the concave groove, and a warping convex on the back side of the base member formed by the joining step, A bending moment that generates a tensile stress is applied to the surface side of the base member.

また、前記接合工程では、前記接合用回転ツールの押圧力によって前記蓋板が前記熱媒体用管の上部を押圧するとともに、前記蓋板の少なくとも上部と前記ベース部材とを摩擦攪拌することが好ましい。 In the joining step, it is preferable that the lid plate presses the upper portion of the heat medium pipe by the pressing force of the joining rotary tool, and at least the upper portion of the lid plate and the base member are frictionally stirred. .

かかる製造方法によれば、蓋板が熱媒体用管を押圧しながら摩擦攪拌を行うことにより、熱媒体用管の周囲に形成される空隙部を小さくすることができるため、水密性及び気密性の高い伝熱板を製造することができる。 According to this manufacturing method, since the gap plate formed around the heat medium pipe can be reduced by performing frictional stirring while the cover plate presses the heat medium pipe, water tightness and air tightness are achieved. High heat transfer plate can be manufactured.

また、前記矯正工程では、前記ベース部材の裏面側の中央付近に当接する第一補助部材を配置するとともに、前記ベース部材の表面側の周縁付近に当接する第二補助部材及び第三補助部材を、前記第一補助部材を挟んで両側に配置した状態で、前記ベース部材を衝打具で衝打することにより、前記反りを矯正するとともに、前記各補助部材は、前記ベース部材よりも硬度が低い材料であることが好ましい。かかる製造方法によれば、補助部材を配置することで、矯正工程の作業性を高めることができる。また、衝打する際に、ベース部材を傷つけることなく矯正することができる。
また、前記接合工程では、前記接合用回転ツールのショルダ部の外径を前記凹溝の幅よりも大きく設定し、前記凹溝の一方の側壁と前記蓋板の一方の側面とが突き合わされた突合部と、前記凹溝の他方の側壁と前記蓋板の他方の側面とが突き合わされた突合部との間に一のルートを設定して前記突合部同士を同時に摩擦攪拌するとともに、前記接合用回転ツールの押圧力によって前記蓋板が前記熱媒体用管の上部を押圧しつつ、前記蓋板の少なくとも上部と前記ベース部材とを摩擦攪拌し、前記矯正工程では、前記ベース部材を衝打具で衝打することにより、前記反りを矯正することが好ましい。かかる製造方法によれば、一条の摩擦攪拌のみで接合工程を行うことができるため、作業手間を省くことができる。 In the correction step, a first auxiliary member that contacts the vicinity of the center of the back surface side of the base member is disposed, and a second auxiliary member and a third auxiliary member that contact the vicinity of the peripheral edge of the surface side of the base member are arranged. The base member is hit with a striking tool in a state where the first auxiliary member is disposed on both sides, and the warp is corrected, and each auxiliary member has a hardness higher than that of the base member. A low material is preferred. According to this manufacturing method, the workability | operativity of a correction process can be improved by arrange | positioning an auxiliary member. Further, when hitting, it is possible to correct without damaging the base member.
In the joining step, the outer diameter of the shoulder portion of the joining rotary tool is set larger than the width of the recessed groove, and one side wall of the recessed groove and one side surface of the lid plate are abutted against each other. While setting one route between the abutting portion and the abutting portion where the other side wall of the concave groove and the other side surface of the lid plate are abutted, the abutting portions are simultaneously friction-stirred, and the bonding At least the upper part of the cover plate and the base member are frictionally stirred while the cover plate presses the upper part of the heat medium pipe by the pressing force of the rotating tool for rotation, and the base member is hit in the correction step. It is preferable to correct the warp by hitting with a tool. According to such a manufacturing method, since the joining process can be performed with only one line of friction stirring, work labor can be saved.

本発明に係る伝熱板の製造方法によれば、平坦性の高い伝熱板を提供することができる。 According to the method for manufacturing a heat transfer plate according to the present invention, a heat transfer plate with high flatness can be provided.

第一実施形態に係る伝熱板を示した図であって、（ａ）は斜視図、（ｂ）は、（ａ）のＩ−Ｉ線断面図である。It is the figure which showed the heat exchanger plate which concerns on 1st embodiment, Comprising: (a) is a perspective view, (b) is the II sectional view taken on the line of (a). 第一実施形態に係る伝熱板を示した図であって、（ａ）は分解斜視図、（ｂ）は分解断面図である。It is the figure which showed the heat exchanger plate which concerns on 1st embodiment, Comprising: (a) is an exploded perspective view, (b) is an exploded sectional view. 第一実施形態に係る伝熱板の製造方法を示した断面図であって、（ａ）は溝形成工程、（ｂ）は熱媒体用管挿入工程、（ｃ）は蓋溝閉塞工程を示す。It is sectional drawing which showed the manufacturing method of the heat exchanger plate which concerns on 1st embodiment, Comprising: (a) is a groove | channel formation process, (b) is a pipe | tube insertion process for heat media, (c) shows a cover groove | channel block | close process. . 接合用回転ツールを示した側面図である。It is the side view which showed the rotation tool for joining. 第一実施形態に係る伝熱板の製造方法において、接合工程を行う前を示した斜視図である。In the manufacturing method of the heat exchanger plate which concerns on 1st embodiment, it is the perspective view which showed before performing a joining process. 第一実施形態に係る伝熱板の製造方法において、接合工程を段階的に示した平面図である。It is the top view which showed the joining process in steps in the manufacturing method of the heat exchanger plate which concerns on 1st embodiment. 第一実施形態に係る伝熱板の製造方法において、接合工程を行った後を示した図であって、（ａ）は斜視図、（ｂ）は地点ｃ及び地点ｆを結ぶ線の断面図である。In the manufacturing method of the heat exchanger plate which concerns on 1st embodiment, it is the figure which showed after performing a joining process, Comprising: (a) is a perspective view, (b) is sectional drawing of the line which connects the point c and the point f It is. 第一実施形態に係るプレス矯正の準備段階を示した斜視図である。It is the perspective view which showed the preparatory stage of the press correction which concerns on 1st embodiment. 第一実施形態に係るプレス矯正を示した側面図であって、（ａ）はプレス前、（ｂ）はプレス中を示した図である。It is the side view which showed the press correction which concerns on 1st embodiment, Comprising: (a) is before a press, (b) is the figure which showed during press. 第一実施形態に係るプレス矯正の押圧位置を示した平面図である。It is the top view which showed the press position of the press correction which concerns on 1st embodiment. 第一実施形態に係るロール矯正を示した図であって、（ａ）は斜視図、（ｂ）はプレス前を示した側面図、（ｃ）はプレス中を示した側面図である。It is the figure which showed the roll correction which concerns on 1st embodiment, Comprising: (a) is a perspective view, (b) is the side view which showed before the press, (c) is the side view which showed during the press. 第二実施形態に係る伝熱板を示した断面図である。It is sectional drawing which showed the heat exchanger plate which concerns on 2nd embodiment. 第三実施形態に係る伝熱板を示した断面図である。It is sectional drawing which showed the heat exchanger plate which concerns on 3rd embodiment. 第四実施形態に係る伝熱板を示した斜視図である。It is the perspective view which showed the heat exchanger plate which concerns on 4th embodiment. 第四実施形態に係る伝熱板を示した分解斜視図である。It is the disassembled perspective view which showed the heat exchanger plate which concerns on 4th embodiment. 第四実施形態に係る伝熱板を示した分解断面図である。It is the exploded sectional view showing the heat exchanger plate concerning a 4th embodiment. 第四実施形態に係る伝熱板の製造方法において、（ａ）は接合工程を示した斜視図、（ｂ）は、（ａ）のII-II線断面図である。In the manufacturing method of the heat exchanger plate which concerns on 4th embodiment, (a) is the perspective view which showed the joining process, (b) is the II-II sectional view taken on the line of (a). 第四実施形態に係る伝熱板の製造方法において、接合工程を行った後を示した図であって、（ａ）は斜視図、（ｂ）は地点ｃ及び地点ｆを結ぶ線の断面図である。In the manufacturing method of the heat exchanger plate which concerns on 4th embodiment, it is the figure which showed after performing a joining process, Comprising: (a) is a perspective view, (b) is sectional drawing of the line which ties the point c and the point f It is. 第五実施形態に係る伝熱板の製造方法を示した断面図である。It is sectional drawing which showed the manufacturing method of the heat exchanger plate which concerns on 5th embodiment. 特許文献１に係る伝熱板の製造方法によって形成された伝熱板を示した断面図である。It is sectional drawing which showed the heat exchanger plate formed by the manufacturing method of the heat exchanger plate concerning patent document 1. FIG.

［第一実施形態］
本発明の第一実施形態について、図面を参照して詳細に説明する。まず、本実施形態に係る製造方法によって製造された伝熱板１について説明する。本実施形態においては、伝熱板１をヒートプレートとして用いる場合を例にして説明する。 [First embodiment]
A first embodiment of the present invention will be described in detail with reference to the drawings. First, the heat transfer plate 1 manufactured by the manufacturing method according to the present embodiment will be described. In the present embodiment, a case where the heat transfer plate 1 is used as a heat plate will be described as an example.

伝熱板１は、図１の（ａ）及び（ｂ）に示すように、平面視矩形の板厚のベース部材２と、ベース部材２の内部に埋設される熱媒体用管２０と、ベース部材２に凹設された溝に配置された蓋板１０と、を主に備えている。ベース部材２と蓋板１０との突合部Ｊ１，Ｊ２は、それぞれ摩擦攪拌によって接合されている。かかる伝熱板１は、熱媒体用管２０に挿通された図示しないマイクロヒーター等で加熱して使用される。 As shown in FIGS. 1A and 1B, the heat transfer plate 1 includes a base member 2 having a rectangular plate thickness in plan view, a heat medium pipe 20 embedded in the base member 2, and a base. And a lid plate 10 disposed in a groove provided in the member 2. The abutting portions J1 and J2 between the base member 2 and the cover plate 10 are joined by friction stirring. The heat transfer plate 1 is used after being heated by a micro heater (not shown) inserted through the heat medium pipe 20.

ベース部材２は、熱媒体用管２０に流れる熱媒体の熱を外部に伝達させる役割、あるいは、外部の熱を熱媒体用管２０に流れる熱媒体に伝達させる役割を果たすものである。ベース部材２は、図２の（ａ）及び（ｂ）に示すように、平面視正方形を呈する直方体であって、本実施形態では、厚みが３０ｍｍ〜１２０ｍｍのものを用いる。ベース部材２は、例えば、アルミニウム、アルミニウム合金、銅、銅合金、チタン、チタン合金、マグネシウム、マグネシウム合金など摩擦攪拌可能な金属材料からなる。ベース部材２の表面Ｚａには、蓋溝６が凹設されており、蓋溝６の底面６ｃの中央には、蓋溝６よりも幅狭の凹溝８が凹設されている。 The base member 2 serves to transmit the heat of the heat medium flowing through the heat medium pipe 20 to the outside, or to play a role of transferring external heat to the heat medium flowing through the heat medium pipe 20. As shown in FIGS. 2A and 2B, the base member 2 is a rectangular parallelepiped having a square shape in plan view, and in this embodiment, the base member 2 having a thickness of 30 mm to 120 mm is used. The base member 2 is made of a metal material that can be frictionally stirred, such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, and magnesium alloy. A lid groove 6 is recessed in the surface Za of the base member 2, and a recessed groove 8 narrower than the lid groove 6 is recessed in the center of the bottom surface 6 c of the lid groove 6.

蓋溝６は、図２の（ａ）及び（ｂ）に示すように、蓋板１０が配置される部分であって、平面視略馬蹄状に一定の幅及び深さで連続して形成されている。蓋溝６は、断面視矩形を呈し、蓋溝６の底面６ｃから垂直に立ち上がる側壁６ａ，６ｂを備えている。 As shown in FIGS. 2A and 2B, the lid groove 6 is a portion where the lid plate 10 is disposed, and is continuously formed in a substantially horseshoe shape in plan view with a certain width and depth. ing. The lid groove 6 has a rectangular shape in sectional view, and includes side walls 6 a and 6 b that rise vertically from the bottom surface 6 c of the lid groove 6.

凹溝８は、熱媒体用管２０が挿入される部分であって、蓋溝６の底面６ｃの中央部分に、蓋溝６の全長に亘って形成されている。凹溝８は、上方が開口した断面視Ｕ字状の溝であって、下端には断面視半円形状の底面７が形成されている。凹溝８の開口部分の幅Ａ及び凹溝８の深さＣは、熱媒体用管２０の外径Ｂと略同等に形成されている。また、蓋溝６の幅Ｅ及び深さＧは、蓋板１０の幅及び厚みと略同等に形成されている。 The concave groove 8 is a portion into which the heat medium pipe 20 is inserted, and is formed in the central portion of the bottom surface 6 c of the lid groove 6 over the entire length of the lid groove 6. The concave groove 8 is a U-shaped groove with an upper opening, and a bottom surface 7 having a semicircular shape in cross section is formed at the lower end. The width A of the opening portion of the concave groove 8 and the depth C of the concave groove 8 are formed substantially equal to the outer diameter B of the heat medium pipe 20. Further, the width E and the depth G of the lid groove 6 are formed substantially equal to the width and thickness of the lid plate 10.

熱媒体用管２０は、図２の（ａ）及び（ｂ）に示すように、断面視円形の中空部１８を有する円筒管である。熱媒体用管２０は、本実施形態では銅からなり、平面視略馬蹄状を呈する。熱媒体用管２０の外径Ｂは、凹溝８の幅Ａ及び凹溝８の深さＣと略同等に形成されているため、熱媒体用管２０及び蓋板１０をベース部材２に配置すると、熱媒体用管２０の下半部と凹溝８の底面７とが面接触するとともに、熱媒体用管２０の上端が、蓋板１０の下面１２と接触する。
熱媒体用管２０には、本実施形態においては、マイクロヒーターを挿通するが、他にも例えば、冷却水、冷却ガス、高温液、あるいは高温ガスなどの熱媒体を循環させて、熱媒体の熱をベース部材２及び蓋板１０に、あるいは、ベース部材２及び蓋板１０の熱を熱媒体に伝達させてもよい。 As shown in FIGS. 2A and 2B, the heat medium pipe 20 is a cylindrical pipe having a hollow portion 18 having a circular cross-sectional view. In the present embodiment, the heat medium pipe 20 is made of copper and has a substantially horseshoe shape in plan view. Since the outer diameter B of the heat medium pipe 20 is formed substantially equal to the width A of the groove 8 and the depth C of the groove 8, the heat medium pipe 20 and the cover plate 10 are arranged on the base member 2. Then, the lower half portion of the heat medium tube 20 and the bottom surface 7 of the groove 8 are in surface contact, and the upper end of the heat medium tube 20 is in contact with the lower surface 12 of the lid plate 10.
In the present embodiment, a microheater is inserted into the heat medium pipe 20, but for example, a heat medium such as cooling water, cooling gas, high-temperature liquid, or high-temperature gas is circulated to circulate the heat medium. The heat may be transmitted to the base member 2 and the cover plate 10 or the heat of the base member 2 and the cover plate 10 to the heat medium.

なお、本実施形態においては、熱媒体用管２０は、断面視円形としたが、断面視角形であってもよい。また、熱媒体用管２０は、本実施形態においては、銅管を用いているが、他の材料の管を用いてもよい。また、熱媒体用管２０は、必ずしも設ける必要は無く、凹溝８に直接熱媒体を流入させてもよい。 In the present embodiment, the heat medium pipe 20 is circular in cross section, but may be square in cross section. Moreover, although the copper pipe is used for the heat medium pipe 20 in this embodiment, a pipe made of another material may be used. Further, the heat medium pipe 20 is not necessarily provided, and the heat medium may flow directly into the concave groove 8.

蓋板１０は、図２の（ａ）及び（ｂ）に示すように、ベース部材２の蓋溝６の断面と略同じ矩形断面を形成する上面１１、下面１２、側面１３ａ及び側面１３ｂを有し、平面視略馬蹄状で形成されている。蓋板１０は、本実施形態では、ベース部材２と同様の組成で形成されている。蓋板１０の厚みは、蓋溝６の深さＧと略同等に形成されている。また、蓋板１０の幅は、蓋溝６の幅Ｅと略同等に形成されているため、蓋板１０を蓋溝６に配置すると、蓋板１０の側面１３ａ，１３ｂは、蓋溝６の側壁６ａ，６ｂとそれぞれ面接触するか又は微細な隙間をあけて対向する。 As shown in FIGS. 2A and 2B, the lid plate 10 has an upper surface 11, a lower surface 12, a side surface 13 a, and a side surface 13 b that form a rectangular section that is substantially the same as the section of the lid groove 6 of the base member 2. And it is formed in a substantially horseshoe shape in plan view. In this embodiment, the cover plate 10 is formed with the same composition as the base member 2. The thickness of the lid plate 10 is formed substantially equal to the depth G of the lid groove 6. Further, since the width of the lid plate 10 is formed substantially equal to the width E of the lid groove 6, when the lid plate 10 is arranged in the lid groove 6, the side surfaces 13 a and 13 b of the lid plate 10 are The side walls 6a and 6b are in surface contact with each other or face each other with a fine gap.

また、本実施形態においては、凹溝８と熱媒体用管２０の下半部を面接触させ、かつ、熱媒体用管２０の上端と蓋板１０の下面１２とを接触させたが、これに限定されるものではない。即ち、凹溝８の幅Ａ及び深さＣを、熱媒体用管２０の外径Ｂよりも大きく形成してもよい。また、蓋溝６、凹溝８、蓋板１０及び熱媒体用管２０は、本実施形態では、平面視略馬蹄状を呈するように形成したがこれに限定されるものではなく、伝熱板１の用途に応じて適宜設計すればよい。 In the present embodiment, the groove 8 and the lower half of the heat medium pipe 20 are brought into surface contact, and the upper end of the heat medium pipe 20 and the lower surface 12 of the cover plate 10 are brought into contact. It is not limited to. That is, the width A and the depth C of the concave groove 8 may be formed larger than the outer diameter B of the heat medium pipe 20. Further, in the present embodiment, the lid groove 6, the concave groove 8, the lid plate 10 and the heat medium pipe 20 are formed so as to exhibit a substantially horseshoe shape in a plan view, but the present invention is not limited thereto. What is necessary is just to design suitably according to the 1 use.

次に、伝熱板１の製造方法について説明する。
本実施形態に係る伝熱板１の製造方法は、（１）溝形成工程、（２）熱媒体用管挿入工程、（３）蓋溝閉塞工程、（４）接合工程、（５）矯正工程、（６）焼鈍工程を含むものである。 Next, a method for manufacturing the heat transfer plate 1 will be described.
The manufacturing method of the heat transfer plate 1 according to the present embodiment includes (1) groove forming step, (2) heat medium tube inserting step, (3) lid groove closing step, (4) joining step, and (5) straightening step. (6) An annealing process is included.

（１）溝形成工程
溝形成工程では、図３の（ａ）に示すように、ベース部材２の表面Ｚａに、所定の幅及び深さで蓋溝６及び凹溝８を形成する。溝形成工程は、例えば、公知のエンドミル等を用いて、切削加工により行う。 (1) Groove Forming Step In the groove forming step, the cover groove 6 and the concave groove 8 are formed with a predetermined width and depth on the surface Za of the base member 2 as shown in FIG. The groove forming step is performed by cutting using, for example, a known end mill.

（２）熱媒体用管挿入工程
熱媒体用管挿入工程では、図３の（ｂ）に示すように、溝形成工程で形成された凹溝８に熱媒体用管２０を挿入する。 (2) Heat medium tube insertion step In the heat medium tube insertion step, as shown in FIG. 3B, the heat medium tube 20 is inserted into the recessed groove 8 formed in the groove formation step.

（３）蓋溝閉塞工程
蓋溝閉塞工程では、図３の（ｃ）に示すように、蓋溝６に蓋板１０を配置して、蓋溝６を閉塞する。ここで、蓋溝６と蓋板１０との突き合わせ面において、蓋溝６と蓋板１０の内縁とで突き合わされた部分を突合部Ｊ１とし、蓋溝６と蓋板１０の外縁とで突き合わされた部分を突合部Ｊ２とする。 (3) Lid groove closing process In the lid groove closing process, as shown in FIG. 3C, the lid plate 10 is disposed in the lid groove 6 to close the lid groove 6. Here, on the abutting surface between the lid groove 6 and the lid plate 10, the part abutted between the lid groove 6 and the inner edge of the lid plate 10 is referred to as an abutting portion J1, and the lid groove 6 and the outer edge of the lid plate 10 are abutted. This portion is referred to as a butt portion J2.

（４）接合工程
接合工程では、突合部Ｊ１，Ｊ２に沿って、接合用回転ツールＦを用いて摩擦攪拌を行う。接合工程は、本実施形態では、突合部Ｊ１を摩擦攪拌する第一接合工程と、突合部Ｊ２を摩擦攪拌する第二接合工程とを含む。 (4) Joining Step In the joining step, friction stirring is performed using the joining rotary tool F along the abutting portions J1 and J2. In the present embodiment, the joining process includes a first joining process in which the abutting portion J1 is frictionally stirred and a second joining process in which the abutting portion J2 is frictionally stirred.

ここで、本実施形態における接合工程の際に用いる接合用回転ツールＦについて詳細に説明する。
接合用回転ツールＦは、図４に示すように、工具鋼などベース部材２よりも硬質の金属材料からなり、円柱状を呈するショルダ部Ｆ１と、このショルダ部Ｆ１の下端面Ｆ１１に突設された攪拌ピン（プローブ）Ｆ２とを備えて構成されている。接合用回転ツールＦの寸法・形状は、ベース部材２の材質や厚さ等に応じて設定すればよい。 Here, the joining rotary tool F used in the joining process in the present embodiment will be described in detail.
As shown in FIG. 4, the joining rotary tool F is made of a metal material harder than the base member 2 such as tool steel, and protrudes from a shoulder portion F1 having a columnar shape and a lower end surface F11 of the shoulder portion F1. And a stirring pin (probe) F2. What is necessary is just to set the dimension and shape of the rotation tool F for joining according to the material, thickness, etc. of the base member 2. FIG.

ショルダ部Ｆ１の下端面Ｆ１１は、塑性流動化した金属を押えて周囲への飛散を防止する役割を担う部位であり、本実施形態では、凹面状に成形されている。攪拌ピンＦ２は、ショルダ部Ｆ１の下端面Ｆ１１の中央から垂下しており、本実施形態では、先細りの円錐台状に成形されている。また、攪拌ピンＦ２の周面には、螺旋状に刻設された攪拌翼が形成されている。 The lower end surface F11 of the shoulder portion F1 is a portion that plays a role of pressing the plastic fluidized metal and preventing scattering to the surroundings, and is formed in a concave shape in this embodiment. The stirring pin F2 hangs down from the center of the lower end surface F11 of the shoulder portion F1, and is formed into a tapered truncated cone shape in this embodiment. In addition, a stirring blade engraved in a spiral shape is formed on the peripheral surface of the stirring pin F2.

ここで、図４に示すベース部材２の厚みｔは、攪拌ピンＦ２の長さＬ_Ａの３倍以上であることが好ましい。また、ベース部材２の厚みｔは、ショルダ部Ｆ１の外径Ｘ_１の１．５倍以上であることが好ましい。かかる設定によれば、接合用回転ツールＦの大きさに対して、ベース部材２の厚みを十分に確保することができるため、摩擦攪拌を行う際に発生する反りを低減することができる。 The thickness t of the base member 2 shown in FIG. 4, it is preferable for the length L _A of the stirring pin F2 is three times or more. The thickness t of the base member 2 is preferably at least 1.5 times the outer diameter X ₁ of the shoulder portion F1. According to this setting, since the thickness of the base member 2 can be sufficiently ensured with respect to the size of the joining rotary tool F, it is possible to reduce the warpage that occurs when performing frictional stirring.

第一接合工程では、図５、図６の（ａ）及び（ｂ）に示すように、ベース部材２と蓋板１０との突合部Ｊ１に沿って、摩擦攪拌を行う。
まず、ベース部材２の表面Ｚａの任意の位置に開始位置Ｓ_Ｍ１を設定し、接合用回転ツールＦの攪拌ピンＦ２をベース部材２に押し込む（押圧する）。開始位置Ｓ_Ｍ１は、本実施形態では、ベース部材２の外縁の近傍であり、かつ、突合部Ｊ１の近傍に設定する。接合用回転ツールＦのショルダ部Ｆ１の一部がベース部材２の表面Ｚａに接触したら、突合部Ｊ１の始点ｓ１に向かって接合用回転ツールＦを相対移動させる。そして、図６の（ａ）に示すように、始点ｓ１に達したら、接合用回転ツールＦを離脱させずに、そのまま突合部Ｊ１に沿って移動させる。 In the first joining step, friction agitation is performed along the abutting portion J1 between the base member 2 and the cover plate 10 as shown in FIGS.
First, the start position _SM1 is set at an arbitrary position on the surface Za of the base member 2, and the agitation pin F2 of the welding rotary tool F is pushed (pressed) into the base member 2. In this embodiment, the start position S _M1 is set in the vicinity of the outer edge of the base member 2 and in the vicinity of the abutting portion J1. When a part of the shoulder portion F1 of the joining rotary tool F comes into contact with the surface Za of the base member 2, the joining rotary tool F is relatively moved toward the start point s1 of the abutting portion J1. Then, as shown in FIG. 6A, when the starting point s1 is reached, the joining rotary tool F is moved as it is along the abutting portion J1 without being detached.

接合用回転ツールＦが突合部Ｊ１の終点ｅ１に達したら、接合用回転ツールＦをそのまま開始位置Ｓ_Ｍ１側に移動させて、任意の位置に設定した終了位置Ｅ_Ｍ１で接合用回転ツールＦを離脱させる。
なお、開始位置Ｓ_Ｍ１、始点ｓ１、終了位置Ｅ_Ｍ１及び終点ｅ１は、本実施形態の位置に限定するものではないが、ベース部材２の外縁の近傍であり、かつ、突合部Ｊ１の近傍であることが好ましい。 When the joining rotary tool F reaches the end point e1 of the abutting portion J1, the joining rotary tool F is moved to the start position S _M1 as it is, and the joining rotary tool F is moved to the end position E _M1 set at an arbitrary position. Let go.
The start position S _M1 , the start point s 1, the end position E _M1, and the end point e 1 are not limited to the positions of the present embodiment, but are in the vicinity of the outer edge of the base member 2 and in the vicinity of the abutting portion J 1. Preferably there is.

次に、第二接合工程では、図６の（ｂ）及び（ｃ）に示すように、ベース部材２と蓋板１０との突合部Ｊ２に沿って、摩擦攪拌を行う。
まず、ベース部材２の表面Ｚａの任意の地点ｈに開始位置Ｓ_Ｍ２を設定し、接合用回転ツールＦの攪拌ピンＦ２をベース部材２に押し込む（押圧する）。接合用回転ツールＦのショルダ部Ｆ１の一部がベース部材２の表面Ｚａに接触したら、突合部Ｊ２の始点ｓ２に向かって接合用回転ツールＦを相対移動させる。そして、始点ｓ２に達したら、接合用回転ツールＦを離脱させずに、そのまま突合部Ｊ２に沿って移動させる。 Next, in the second joining step, friction agitation is performed along the abutting portion J2 between the base member 2 and the cover plate 10 as shown in FIGS.
First, a start position _SM2 is set at an arbitrary point h on the surface Za of the base member 2, and the stirring pin F2 of the welding rotary tool F is pushed (pressed) into the base member 2. When a part of the shoulder portion F1 of the joining rotary tool F comes into contact with the surface Za of the base member 2, the joining rotary tool F is relatively moved toward the start point s2 of the abutting portion J2. When the starting point s2 is reached, the joining rotary tool F is moved along the abutting portion J2 as it is without being detached.

接合用回転ツールＦが突合部Ｊ２の終点ｅ２に達したら、接合用回転ツールＦをそのまま地点ｆ側に移動させて、地点ｆに設定した終了位置Ｅ_Ｍ２で接合用回転ツールＦを離脱させる。
なお、開始位置Ｓ_Ｍ２及び終了位置Ｅ_Ｍ２は、本実施形態の位置に限定するものではないが、ベース部材２の外縁の隅部であることが好ましい。これにより、終了位置Ｅ_Ｍ２に抜け穴が残存する場合は、隅部を切削加工して除去することができる。 After joining rotation tool F reaches the end point e2 of the butting portion J2, a joining rotation tool F as it is moved to the point f side, disengaging the joining rotation tool F at the end position E _M2 set in point f.
The start position S _M2 and the end position E _M2 are not limited to the positions of the present embodiment, but are preferably corners of the outer edge of the base member 2. Thus, if a loophole in the end position E _M2 remaining can be removed by cutting the corner.

図６の（ｃ）に示すように、本接合工程によって、突合部Ｊ１及び突合部Ｊ２に沿って表面塑性化領域Ｗ１（Ｗ１ａ，Ｗ１ｂ）が形成される。これにより、熱媒体用管２０がベース部材２及び蓋板１０によって密閉される。また、図１の（ｂ）に示すように、本実施形態では、表面塑性化領域Ｗ１の深さが、蓋溝６の側壁６ａ，６ｂ（図２の（ｂ）参照）の深さと略同等に形成されているため、突合部Ｊ１及び突合部Ｊ２の深さ方向の全体を摩擦攪拌することができる。これにより、伝熱板１の気密性を高めることができる。なお、塑性化領域とは、接合用回転ツールＦの摩擦熱によって加熱されて現に塑性化している状態と、接合用回転ツールＦが通り過ぎて常温に戻った状態の両方を含むこととする。 As shown in (c) of FIG. 6, the surface plasticizing region W1 (W1a, W1b) is formed along the abutting portion J1 and the abutting portion J2 by the main joining step. As a result, the heat medium pipe 20 is sealed by the base member 2 and the cover plate 10. Further, as shown in FIG. 1B, in the present embodiment, the depth of the surface plasticizing region W1 is substantially equal to the depth of the side walls 6a and 6b of the lid groove 6 (see FIG. 2B). Therefore, the entire abutting portion J1 and the abutting portion J2 in the depth direction can be frictionally stirred. Thereby, the airtightness of the heat exchanger plate 1 can be improved. The plasticizing region includes both the state heated by the frictional heat of the welding rotary tool F and actually plasticized, and the state where the welding rotary tool F passes and returns to room temperature.

ここで、図７は、本実施形態の接合工程後を示した伝熱板１の斜視図である。伝熱板１は、接合工程によって表面塑性化領域Ｗ１が形成される。表面塑性化領域Ｗ１は、熱収縮によって縮むため、伝熱板１の表面Ｚａ側において、ベース部材２の各隅部側から中心側に向かって圧縮応力が作用する。これにより、伝熱板１は表面Ｚａ側が凹となるように（裏面Ｚｂ側に凸となるように）、撓んでしまう可能性がある。特に、伝熱板１の表面Ｚａに示す地点ａ〜地点ｊのうち、伝熱板１の四隅に係る地点ａ，ｃ，ｆ，ｈにおいては、その反りの影響が顕著に現れる傾向がある。なお、地点ｊは、伝熱板１の中心地点を示し、地点ｂ，ｄ，ｅ，ｇは、ベース部材２の各辺の中間地点を示す。また、伝熱板１の表面Ｚａに示す地点ａ〜地点ｊに対応する裏面Ｚｂの各点を地点ａ’〜ｊ’とする。また、伝熱板１の地点ａから地点ｆ方向を縦方向、地点ａから地点ｃ方向を横方向とする。 Here, FIG. 7 is a perspective view of the heat transfer plate 1 after the joining step of the present embodiment. In the heat transfer plate 1, a surface plasticized region W1 is formed by a joining process. Since the surface plasticization region W1 shrinks due to thermal contraction, a compressive stress acts from the respective corners of the base member 2 toward the center on the surface Za side of the heat transfer plate 1. Thereby, the heat exchanger plate 1 may bend so that the surface Za side may be concave (so that it may be convex on the back surface Zb side). In particular, among the points a to j shown on the surface Za of the heat transfer plate 1, at the points a, c, f, and h related to the four corners of the heat transfer plate 1, the influence of the warp tends to be noticeable. The point j indicates the center point of the heat transfer plate 1, and the points b, d, e, and g indicate intermediate points on each side of the base member 2. Further, the points on the back surface Zb corresponding to the points a to j indicated on the front surface Za of the heat transfer plate 1 are defined as points a ′ to j ′. Further, the direction from the point a to the point f of the heat transfer plate 1 is the vertical direction, and the direction from the point a to the point c is the horizontal direction.

（５）矯正工程
矯正工程では、伝熱板１（ベース部材２）の裏面Ｚｂから、ベース部材２の表面Ｚａ側に引張応力が発生するような曲げモーメントを作用させて、前記した接合工程により形成された伝熱板１の反りを矯正する。矯正工程では、以下に記すプレス矯正、衝打矯正及びロール矯正の三種類の方法からいずれか一以上の方法を選択して行えばよい。まず、プレス矯正について説明する。 (5) Straightening process In the straightening process, a bending moment that generates a tensile stress is applied from the back surface Zb of the heat transfer plate 1 (base member 2) to the surface Za side of the base member 2, and the above-described joining process is performed. The warp of the formed heat transfer plate 1 is corrected. In the correction process, one or more methods may be selected from the following three methods: press correction, impact correction, and roll correction. First, press correction will be described.

（5-1）プレス矯正
前記した接合工程が終了したら、摩擦攪拌で発生したバリを除去するとともに、図８に示すように、伝熱板１の裏面Ｚｂが上方を向くように裏返し、裏面Ｚｂの中心地点ｊ’（図７の（ｂ）参照）に板状の第一補助部材Ｔ１を配置する。さらに、伝熱板１の表面Ｚａ側の四隅に、板状の第二補助部材Ｔ２，Ｔ２及び第三補助部材Ｔ３，Ｔ３を配置する。即ち、第二補助部材Ｔ２、第三補助部材Ｔ３は、第一補助部材Ｔ１を挟んで両側に配置される。第一補助部材Ｔ１乃至第三補助部材Ｔ３は、プレス矯正を行う際の当て材又は台座となる部材であるとともに、伝熱板１が傷つかないようにするための部材である。第一補助部材Ｔ１乃至第三補助部材Ｔ３は、伝熱板１よりも軟質の材料であればよく、例えば、アルミニウム合金、硬質ゴム、プラスチック、木材を用いることができる。なお、第一補助部材Ｔ１乃至第三補助部材Ｔ３は、伝熱板１の力学特性や反りの曲率に応じて、反りとは反対側に撓ませて反りを矯正するのに十分な厚みで設定すればよい。 (5-1) Press Correction When the joining process described above is completed, burrs generated by friction stirring are removed, and as shown in FIG. 8, the heat transfer plate 1 is turned over so that the back surface Zb faces upward, and the back surface Zb The plate-like first auxiliary member T1 is disposed at the center point j ′ (see FIG. 7B). Furthermore, plate-like second auxiliary members T2, T2 and third auxiliary members T3, T3 are arranged at the four corners on the surface Za side of the heat transfer plate 1. That is, the second auxiliary member T2 and the third auxiliary member T3 are disposed on both sides with the first auxiliary member T1 interposed therebetween. The first auxiliary member T1 to the third auxiliary member T3 are members that serve as a contact material or a base when performing press correction, and are members that prevent the heat transfer plate 1 from being damaged. The first auxiliary member T1 to the third auxiliary member T3 may be any material that is softer than the heat transfer plate 1, and for example, aluminum alloy, hard rubber, plastic, and wood can be used. The first auxiliary member T1 to the third auxiliary member T3 are set with a thickness sufficient to correct the warp by bending to the opposite side of the warp according to the mechanical characteristics of the heat transfer plate 1 and the curvature of the warp. do it.

各補助部材を配置したら、図９の（ａ）及び（ｂ）に示すように、公知のプレス装置Ｐを用いて、伝熱板１の裏面Ｚｂから押圧する。即ち、第一補助部材Ｔ１にプレス装置ＰのポンチＰａを押し当て、所定の押圧力で押圧する。プレス装置Ｐによって伝熱板１に圧力が加えられると、図９の（ａ）及び（ｂ）に示すように、第一補助部材Ｔ１が伝熱板１を下側に押し、第二補助部材Ｔ２及び第三補助部材Ｔ３が伝熱板１の両端側を上側に押すため、伝熱板１には曲げモーメントが作用する。この曲げモーメントは伝熱板１の表面Ｚａ側に引張応力を発生させるため、伝熱板１が強制的に下側に凸に撓ませられる。 If each auxiliary member is arrange | positioned, as shown to (a) and (b) of FIG. 9, it will press from the back surface Zb of the heat exchanger plate 1 using the well-known press apparatus P. FIG. That is, the punch Pa of the press device P is pressed against the first auxiliary member T1 and pressed with a predetermined pressing force. When pressure is applied to the heat transfer plate 1 by the press device P, as shown in FIGS. 9A and 9B, the first auxiliary member T1 pushes the heat transfer plate 1 downward, and the second auxiliary member Since T2 and the third auxiliary member T3 push both end sides of the heat transfer plate 1 upward, a bending moment acts on the heat transfer plate 1. Since this bending moment generates a tensile stress on the surface Za side of the heat transfer plate 1, the heat transfer plate 1 is forcibly bent downwardly.

プレス装置の押圧力は、伝熱板１の厚みや材料によって適宜設定すればよいが、図９の（ｂ）に示すように、伝熱板１の表面Ｚａ側が下に凸となって、表面Ｚａに引張応力が発生するような曲げモーメントを作用させることが好ましい。 The pressing force of the pressing device may be appropriately set depending on the thickness and material of the heat transfer plate 1, but as shown in FIG. 9B, the surface Za side of the heat transfer plate 1 is convex downward, and the surface It is preferable to apply a bending moment that causes tensile stress to Za.

また、本実施形態では、図１０に示すように、中心地点ｊ’だけでなく伝熱板１の裏面Ｚｂの地点ｂ’、地点ｄ’、地点ｅ’及び地点ｇ’付近に対しても押圧を行う。即ち、伝熱板１の裏面Ｚｂにかかる各辺の中間地点である地点ｂ’、地点ｄ’、地点ｅ’及び地点ｇ’を含んだ位置Ｈ２〜Ｈ５に第一補助部材Ｔ１を配置して、プレス装置Ｐによって押圧を行う。これにより、伝熱板１をバランスよく矯正でき、平坦性をより高めることができる。 Further, in the present embodiment, as shown in FIG. 10, not only the central point j ′ but also the points b ′, d ′, e ′ and g ′ of the back surface Zb of the heat transfer plate 1 are pressed. I do. That is, the first auxiliary member T1 is disposed at positions H2 to H5 including the point b ′, the point d ′, the point e ′, and the point g ′ that are intermediate points between the sides on the back surface Zb of the heat transfer plate 1. Then, pressing is performed by the press device P. Thereby, the heat exchanger plate 1 can be corrected with good balance, and flatness can be further improved.

なお、プレスする位置は、本実施形態では５箇所に設定したが、これに限定されるものではなく、接合工程によって生じる伝熱板１の反りに応じて適宜設定すればよい。 In addition, although the position to press was set to five places in this embodiment, it is not limited to this, What is necessary is just to set suitably according to the curvature of the heat exchanger plate 1 produced by a joining process.

（5-2）衝打矯正
次に、衝打矯正について説明する。衝打矯正については、プレス矯正と近似するため、
具体的な図示は省略する。衝打矯正とは、例えばハンマーなどの衝打具を用いて伝熱板に発生した反りを矯正することをいう。衝打矯正は、プレス装置Ｐに替えてハンマーなどの衝打具で伝熱板１を衝打する点を除いては、プレス矯正と略同等である。 (5-2) Impact correction Next, impact correction will be explained. For impact correction, it approximates press correction.
Specific illustration is omitted. The hit correction means correcting a warp generated in the heat transfer plate using a hitting tool such as a hammer. The impact correction is substantially the same as the press correction except that the heat transfer plate 1 is impacted with an impact tool such as a hammer instead of the press device P.

衝打矯正では、プレス矯正と同様に補助部材を配置した後、図９及び図１０を参照するように、伝熱板１の裏面Ｚｂから例えばプラスチックハンマー等の衝打具で伝熱板１を衝打する。伝熱板１を衝打すると、伝熱板１の表面Ｚａ側に引張応力を発生させるため、伝熱板１が強制的に下側に凸に撓ませられる（図９の（ｂ）参照）。これにより、伝熱板１の反りを矯正して平坦にすることができる。また、プレス矯正と同様に、必要に応じて伝熱板１の裏面Ｚｂの位置Ｈ２〜Ｈ５を衝打することで、伝熱板１をバランスよく矯正することができる。 In the impact correction, after the auxiliary members are arranged in the same manner as in the press correction, the heat transfer plate 1 is moved from the rear surface Zb of the heat transfer plate 1 with an impact tool such as a plastic hammer as shown in FIGS. Hit it. When the heat transfer plate 1 is struck, a tensile stress is generated on the surface Za side of the heat transfer plate 1, so that the heat transfer plate 1 is forcibly bent downward (see FIG. 9B). . Thereby, the curvature of the heat exchanger plate 1 can be corrected and made flat. Further, similarly to the press correction, the heat transfer plate 1 can be corrected in a well-balanced manner by hitting the positions H2 to H5 of the back surface Zb of the heat transfer plate 1 as necessary.

衝打矯正は、プレス矯正と比べると、プレス装置等を準備する手間が省けるため、作業を容易に行うことができる。また、衝打矯正は、作業が容易であるため伝熱板１が小さい場合や薄い場合に有効である。なお、衝打矯正を終了した後は、衝打により発生したバリを除去することが好ましい。また、衝打具は、伝熱板１を衝打可能なものであれば、特に種類を問わないが、例えばプラスチックハンマーが好ましい。 The impact correction can be easily performed because it saves time and labor for preparing a press device or the like, compared with the press correction. Further, the impact correction is effective when the heat transfer plate 1 is small or thin because the work is easy. In addition, it is preferable to remove the burr generated by the hit after the hit correction. The hitting tool is not particularly limited as long as it can hit the heat transfer plate 1, but for example, a plastic hammer is preferable.

（5-3）ロール矯正
次に、ロール矯正について説明する。前記した接合工程が終了したら、摩擦攪拌で発生したバリを除去するとともに、伝熱板１の裏面Ｚｂが上方を向くように裏返し、裏面Ｚｂの中心地点ｊ’を含んで縦方向と平行になるように長板形状の第一補助部材Ｔ１を配置する。さらに、伝熱板１の表面Ｚａ側の縁部において縦方向と平行になるように、長板形状の第二補助部材Ｔ２及び第三補助部材Ｔ３を配置する。即ち、第二補助部材Ｔ２、第三補助部材Ｔ３は、第一補助部材Ｔ１を挟んで両側に配置される。 (5-3) Roll correction Next, roll correction will be described. When the above-described joining process is completed, burrs generated by friction stirring are removed, and the back surface Zb of the heat transfer plate 1 is turned over so that it faces upward, and is parallel to the vertical direction including the center point j ′ of the back surface Zb. Thus, the long plate-shaped first auxiliary member T1 is arranged. Further, the long plate-shaped second auxiliary member T2 and the third auxiliary member T3 are arranged so as to be parallel to the vertical direction at the edge portion on the surface Za side of the heat transfer plate 1. That is, the second auxiliary member T2 and the third auxiliary member T3 are disposed on both sides with the first auxiliary member T1 interposed therebetween.

そして、第一補助部材Ｔ１の上側に、第一補助部材Ｔ１と直交するようにロールＲ１を配置し、第二補助部材Ｔ２，Ｔ３の下側に第二補助部材Ｔ２及び第三補助部材Ｔ３と直交するようにロールＲ２を配置する。つまり、伝熱板１は、図１１の（ｂ）に示すように、上側に凸の状態でロールＲ１，Ｒ２の間に配置され、第一補助部材Ｔ１乃至第三補助部材Ｔ３を介してロールＲ１，Ｒ２に狭持される。 And roll R1 is arrange | positioned so that it may orthogonally cross with 1st auxiliary member T1 above 1st auxiliary member T1, 2nd auxiliary member T2 and 3rd auxiliary member T3 below 2nd auxiliary member T2, T3, Roll R2 is arrange | positioned so that it may orthogonally cross. That is, as shown in FIG. 11B, the heat transfer plate 1 is disposed between the rolls R1 and R2 so as to protrude upward, and rolls via the first auxiliary member T1 to the third auxiliary member T3. It is held between R1 and R2.

第一補助部材Ｔ１乃至第三補助部材Ｔ３は、ロール矯正を行う際の当て材であるとともに、伝熱板１が傷つかないようにするための部材である。第一補助部材Ｔ１乃至第三補助部材Ｔ３は、伝熱板１よりも軟質の材料であればよく、例えば、アルミニウム合金、硬質ゴム、プラスチック、木材を用いることができる。 The first auxiliary member T <b> 1 to the third auxiliary member T <b> 3 are members for preventing the heat transfer plate 1 from being damaged as well as a contact material when performing roll correction. The first auxiliary member T1 to the third auxiliary member T3 may be any material that is softer than the heat transfer plate 1, and for example, aluminum alloy, hard rubber, plastic, and wood can be used.

ここで、ロールＲ１，Ｒ２が互いに近づいて伝熱板１に圧力を加えると、図１１の（ｂ）及び（ｃ）に示すように、第一補助部材Ｔ１が伝熱板１を下側に押し、第二補助部材Ｔ２及び第三補助部材Ｔ３が伝熱板１の両端側を上側に押すため、伝熱板１には曲げモーメントが作用する。この曲げモーメントは伝熱板１の表面Ｚａ側に引張応力を発生させるため、伝熱板１が強制的に下側に凸に撓ませられる。 Here, when the rolls R1 and R2 approach each other and apply pressure to the heat transfer plate 1, the first auxiliary member T1 moves the heat transfer plate 1 downward as shown in FIGS. 11B and 11C. Since the second auxiliary member T2 and the third auxiliary member T3 push the both end sides of the heat transfer plate 1 upward, a bending moment acts on the heat transfer plate 1. Since this bending moment generates a tensile stress on the surface Za side of the heat transfer plate 1, the heat transfer plate 1 is forcibly bent downwardly.

また、図１１の（ａ）に示すように、ロールＲ１が矢印α方向に回転するとともに、ロールＲ２が矢印β方向に回転すると、ロールＲ１，Ｒ２は伝熱板１に対して矢印γ方向（ロール送り方向）に相対的に移動する。また、ロールＲ１が矢印β方向に回転するとともにロールＲ２が矢印α方向に回転すると、ロールＲ１，Ｒ２は伝熱板１に対して矢印δ方向（ロール送り方向）に相対的に移動する。 11A, when the roll R1 rotates in the direction of the arrow α and the roll R2 rotates in the direction of the arrow β, the rolls R1 and R2 are in the direction of the arrow γ with respect to the heat transfer plate 1 ( Moves relatively in the roll feed direction). When the roll R1 rotates in the arrow β direction and the roll R2 rotates in the arrow α direction, the rolls R1 and R2 move relative to the heat transfer plate 1 in the arrow δ direction (roll feed direction).

したがって、伝熱板１に作用する曲げモーメントの位置が、その相対的な移動に伴って遷移していくため、伝熱板１の全体が強制的に下側に凸に撓まされる。そのため、この相対的な移動を繰り返して往復動させることによって、反りを矯正していくことが可能になる。なお、第一補助部材Ｔ１乃至第三補助部材Ｔ３は、伝熱板１の力学特性や反りの曲率に応じて、反りとは反対側に撓ませて反りを矯正するのに十分な厚みで設定すればよい。 Therefore, since the position of the bending moment acting on the heat transfer plate 1 changes with the relative movement, the entire heat transfer plate 1 is forcibly bent downward. Therefore, it is possible to correct the warp by repeatedly reciprocating this relative movement. The first auxiliary member T1 to the third auxiliary member T3 are set with a thickness sufficient to correct the warp by bending to the opposite side of the warp according to the mechanical characteristics of the heat transfer plate 1 and the curvature of the warp. do it.

また、伝熱板１の縦方向にロールＲ１，Ｒ２を回転させて矯正工程を行なった後、横方向にロールＲ１，Ｒ２を回転させてもよい。即ち、第一補助部材Ｔ１乃至第三補助部材Ｔ３を横方向と平行になるように配置するとともに、第一補助部材Ｔ１乃至第三補助部材Ｔ３に対して直交するようにロールＲ１，Ｒ２を配置する。そして、ロールＲ１，Ｒ２を横方向に往復動させる。これにより、伝熱板１をバランスよく矯正することができる。 Alternatively, the rolls R1 and R2 may be rotated in the vertical direction of the heat transfer plate 1 to perform the correction process, and then the rolls R1 and R2 may be rotated in the horizontal direction. That is, the first auxiliary member T1 to the third auxiliary member T3 are arranged so as to be parallel to the lateral direction, and the rolls R1, R2 are arranged so as to be orthogonal to the first auxiliary member T1 to the third auxiliary member T3. To do. And roll R1, R2 is reciprocated to a horizontal direction. Thereby, the heat exchanger plate 1 can be corrected with sufficient balance.

また、ここでは、伝熱板１の裏面Ｚｂを上にして、歪矯正工程を行うものとして説明したが、裏返さずに表面Ｚａを上にして歪矯正工程を行うようにしてもよい。この場合、前記した各構成部品は、表裏対称に表れるため、説明を省略する。 In addition, here, the description has been made on the assumption that the back surface Zb of the heat transfer plate 1 is up and the distortion correction process is performed, but the distortion correction process may be performed with the surface Za up without turning over. In this case, since each component described above appears symmetrically, description thereof is omitted.

（６）焼鈍工程
焼鈍工程では、伝熱板１を焼鈍することにより、伝熱板１の内部応力を除去する。本実施形態では、熱媒体用管２０に、例えば、マイクロヒーターを通電させて焼鈍を行う。これにより、伝熱板１の内部応力を除去することができ、伝熱板１の使用時の変形を防止することができる。 (6) Annealing Step In the annealing step, the internal stress of the heat transfer plate 1 is removed by annealing the heat transfer plate 1. In the present embodiment, the heat medium pipe 20 is annealed, for example, by energizing a micro heater. Thereby, the internal stress of the heat exchanger plate 1 can be removed, and the deformation | transformation at the time of use of the heat exchanger plate 1 can be prevented.

以上説明した第一実施形態に係る伝熱板の製造方法によれば、接合工程による熱収縮によって伝熱板１が撓んでしまったとしても、伝熱板１の表面Ｚａ側に引張応力が発生するような曲げモーメントを作用させることにより、裏面Ｚｂ側に凸となる反りを矯正することができるため、伝熱板１の平坦性を高めることができる。また、伝熱板１よりも硬度の低い第一補助部材Ｔ１乃至第三補助部材Ｔ３を用いることで、伝熱板１を傷つけることなく矯正作業を行うことができる。 According to the method for manufacturing a heat transfer plate according to the first embodiment described above, even if the heat transfer plate 1 is bent due to heat shrinkage due to the joining process, tensile stress is generated on the surface Za side of the heat transfer plate 1. By applying such a bending moment, it is possible to correct the warp that protrudes toward the back surface Zb, and thus the flatness of the heat transfer plate 1 can be improved. Further, by using the first auxiliary member T1 to the third auxiliary member T3 having a hardness lower than that of the heat transfer plate 1, the correction work can be performed without damaging the heat transfer plate 1.

［第二実施形態］
第二実施形態に係る伝熱板の製造方法は、図１２に示すように、伝熱板２１において、熱媒体用管２０の周囲に形成される空隙部２２に塑性流動材が流入されている点で第一実施形態と相違する。即ち、図１の（ｂ）に示すように、第一実施形態においては、接合工程で摩擦攪拌を行ったとしても、熱媒体用管２０の周囲に空隙が形成されてしまう。そこで、第二実施形態に示すように、熱媒体用管２０の周囲に形成された空隙部２２に塑性流動材を流入させて、当該空隙部２２を埋めてもよい。なお、第一実施形態と共通する部分は説明を省略する。 [Second Embodiment]
In the heat transfer plate manufacturing method according to the second embodiment, as shown in FIG. 12, in the heat transfer plate 21, the plastic fluidized material is introduced into the gap portion 22 formed around the heat medium pipe 20. This is different from the first embodiment. That is, as shown in FIG. 1B, in the first embodiment, even if friction stirring is performed in the joining step, a gap is formed around the heat medium pipe 20. Therefore, as shown in the second embodiment, the gap 22 may be filled by flowing a plastic fluid into the gap 22 formed around the heat medium pipe 20. Note that description of parts common to the first embodiment is omitted.

即ち、伝熱板２１に係る蓋溝６及び蓋板１０は、第一実施形態よりも幅狭に形成されている。そして、接合工程では、接合用回転ツールＦを熱媒体用管２０に近接させるように摩擦攪拌を行い、金属部材を塑性流動化させた塑性流動材を空隙部２２に流入させる。これにより、熱媒体用管２０の周囲に形成される空隙部２２が塑性流動材（金属部材）で埋まるため、伝熱板２１の熱交換効率を高めることができる。 That is, the lid groove 6 and the lid plate 10 related to the heat transfer plate 21 are formed narrower than the first embodiment. In the joining step, friction stirring is performed so that the joining rotary tool F is brought close to the heat medium pipe 20, and the plastic fluidized material obtained by plastic fluidizing the metal member is caused to flow into the gap portion 22. Thereby, since the space | gap part 22 formed in the circumference | surroundings of the pipe | tube 20 for heat media is filled with a plastic fluid material (metal member), the heat exchange efficiency of the heat exchanger plate 21 can be improved.

このようにして形成された伝熱板２１に対しても、前記したようにプレス矯正、衝打矯正又はロール矯正を行うことにより、伝熱板２１に生じる反りを矯正することができる。なお、空隙部２２に塑性流動材をどの程度流動させるかは、接合用回転ツールＦの大きさや押込み量、蓋溝６及び蓋板１０の形状に応じて適宜設定すればよい。 The warp generated in the heat transfer plate 21 can be corrected by performing press correction, striking correction, or roll correction as described above on the heat transfer plate 21 thus formed. In addition, what is necessary is just to set suitably how much a plastic fluid material is made to flow into the space | gap part 22 according to the magnitude | size of the rotation tool F for joining, the pushing amount, and the shape of the cover groove | channel 6 and the cover board 10.

［第三実施形態］
第三実施形態に係る伝熱板の製造方法は、図１３に示すように、伝熱板３１において、熱媒体用管が挿入されていない点で第一実施形態と相違する。このように、熱媒体用管を設けなくても、凹溝８に直接熱媒体を流入させてもよい。
このようにして形成された伝熱板３１に対しても、前記したようにプレス矯正、衝打矯正又はロール矯正を行うことにより、伝熱板３１に生じる反りを矯正することができる。 [Third embodiment]
As shown in FIG. 13, the method for manufacturing a heat transfer plate according to the third embodiment is different from the first embodiment in that the heat transfer pipe is not inserted in the heat transfer plate 31. In this way, the heat medium may flow directly into the concave groove 8 without providing the heat medium pipe.
The warp generated in the heat transfer plate 31 can be corrected by performing press correction, striking correction, or roll correction as described above on the heat transfer plate 31 thus formed.

［第四実施形態］
次に、本発明の第四実施形態について説明する。前記した第一実施形態においては、蓋板１０の両側面に沿ってそれぞれ摩擦攪拌を行うことで、表面塑性化領域Ｗ１，Ｗ１のように、二条の塑性化領域が形成されるようにして伝熱板を形成したが、第四実施形態のように、蓋板の幅を小さく設定して、一条の塑性化領域のみが形成されるようにして伝熱板を形成してもよい。 [Fourth embodiment]
Next, a fourth embodiment of the present invention will be described. In the first embodiment described above, by conducting frictional stirring along both side surfaces of the cover plate 10, transmission is performed so that two plasticized regions are formed like the surface plasticized regions W1 and W1. Although the heat plate is formed, as in the fourth embodiment, the heat transfer plate may be formed by setting the width of the cover plate to be small and forming only one line of plasticized region.

第四実施形態に係る伝熱板の製造方法は、図１４に示すように、伝熱板４１において、平面視正方形の板厚のベース部材２と、ベース部材２に凹設された溝に挿入された熱媒体用管２０と、ベース部材２に凹設された溝に挿入された蓋板４２と、を主に備えている。蓋板４２の上面は、一条の摩擦攪拌によって接合されている。 As shown in FIG. 14, the heat transfer plate manufacturing method according to the fourth embodiment is inserted into a base member 2 having a square plate thickness in plan view and a groove recessed in the base member 2 in the heat transfer plate 41. The heat medium pipe 20 and the cover plate 42 inserted in the groove formed in the base member 2 are mainly provided. The upper surface of the cover plate 42 is joined by a single friction stir.

図１５及び図１６に示すように、ベース部材２の表面Ｚａには、ベース部材２の一方の側面Ｚｃから対向する他方の側面Ｚｄまで連続して形成された凹溝４３が形成されている。凹溝４３は、熱媒体用管２０及び蓋板４２が挿入される部分である。凹溝４３は、断面視Ｕ字状、平面視蛇行状を呈するように形成されている。図１６に示すように、凹溝４３の側壁４３ａ，４３ｂ間の幅Ａ’は、熱媒体用管２０の外径と略同等に形成されている。また、凹溝４３の幅Ａ’は、接合用回転ツールＦのショルダ部Ｆ１の外径Ｘ_１よりも小さく形成されている。凹溝４３の深さは、深さＣ’で形成されている。 As shown in FIGS. 15 and 16, a concave groove 43 formed continuously from one side surface Zc of the base member 2 to the opposite side surface Zd is formed on the surface Za of the base member 2. The concave groove 43 is a portion into which the heat medium pipe 20 and the lid plate 42 are inserted. The concave groove 43 is formed so as to have a U-shape in a sectional view and a meandering shape in a plan view. As shown in FIG. 16, the width A ′ between the side walls 43 a and 43 b of the concave groove 43 is formed to be approximately equal to the outer diameter of the heat medium pipe 20. The width A of the groove 43 'is formed smaller than the outer diameter X ₁ of the shoulder portion F1 of the joining rotation tool F. The depth of the concave groove 43 is formed with a depth C ′.

熱媒体用管２０は、凹溝４３に挿入される管であって、ベース部材２の一方の側面Ｚｃから他方の側面Ｚｄまで貫通して形成されている。熱媒体用管２０は、平面視蛇行状を呈し、凹溝４３の平面視形状と略同等の形状を呈する。 The heat medium pipe 20 is a pipe inserted into the concave groove 43 and is formed so as to penetrate from one side surface Zc of the base member 2 to the other side surface Zd. The heat medium pipe 20 has a meandering shape in plan view, and has a shape substantially equivalent to the shape of the concave groove 43 in plan view.

蓋板４２は、図１５及び図１６に示すように、断面視矩形、平面視蛇行状を呈する部材であって凹溝４３に挿入される部材である。蓋板４２は、側面４２ａ，４２ｂ及び上面４２ｃ、下面４２ｄを備えている。蓋板４２の高さＨ’と熱媒体用管２０の外径との和は、凹溝４３の深さＣ’と略同等に形成されている。また、蓋板４２の幅は、凹溝４３の幅Ａ’と略同等に形成されている。したがって、熱媒体用管２０及び蓋板４２を凹溝４３に挿入すると、上面４２ｃとベース部材２の表面Ｚａとが面一になるとともに、蓋板４２の側面４２ａ，４２ｂは、凹溝４３の側壁４３ａ，４３ｂとそれぞれ面接触するか又は微細な隙間をあけて対向する。 As shown in FIGS. 15 and 16, the cover plate 42 is a member that has a rectangular cross-sectional view and a meandering shape in plan view, and is a member that is inserted into the concave groove 43. The lid plate 42 includes side surfaces 42a and 42b, an upper surface 42c, and a lower surface 42d. The sum of the height H ′ of the cover plate 42 and the outer diameter of the heat medium pipe 20 is formed substantially equal to the depth C ′ of the concave groove 43. Further, the width of the lid plate 42 is formed substantially equal to the width A ′ of the concave groove 43. Therefore, when the heat medium tube 20 and the lid plate 42 are inserted into the concave groove 43, the upper surface 42 c and the surface Za of the base member 2 are flush with each other, and the side surfaces 42 a and 42 b of the lid plate 42 are formed on the concave groove 43. The side walls 43a and 43b are in surface contact with each other or face each other with a fine gap.

次に、第四実施形態に係る製造方法について説明する。
第四実施形態に係る伝熱板の製造方法は、（１）溝形成工程、（２）熱媒体用管挿入工程、（３）蓋板挿入工程、（４）接合工程、（５）矯正工程、（６）焼鈍工程を含むものである。 Next, a manufacturing method according to the fourth embodiment will be described.
The manufacturing method of the heat transfer plate according to the fourth embodiment includes (1) groove forming step, (2) heat medium tube inserting step, (3) lid plate inserting step, (4) joining step, and (5) straightening step. (6) An annealing process is included.

（１）溝形成工程
溝形成工程では、図１５及び図１６に示すように、ベース部材２の表面Ｚａに所定の幅及び深さで凹溝４３を形成する。溝形成工程は、例えば、公知のエンドミル等を用いて行う。 (1) Groove Forming Step In the groove forming step, as shown in FIGS. 15 and 16, the concave groove 43 is formed on the surface Za of the base member 2 with a predetermined width and depth. The groove forming step is performed using, for example, a known end mill.

（２）熱媒体用管挿入工程
熱媒体用管挿入工程では、図１５及び図１６に示すように、溝形成工程で形成された凹溝４３に熱媒体用管２０を挿入する。 (2) Heat medium tube insertion step In the heat medium tube insertion step, as shown in FIGS. 15 and 16, the heat medium tube 20 is inserted into the concave groove 43 formed in the groove formation step.

（３）蓋板挿入工程
蓋板挿入工程では、図１５及び図１６に示すように、凹溝４３に蓋板４２を挿入して凹溝４３を閉塞する。ここで、凹溝４３と蓋板４２との突き合わせ面において、凹溝４３の一方の側壁４３ａと、蓋板４２の一方の側面４２ａとで突き合わされた部分を突合部Ｊ３とし、凹溝４３の他方の側壁４３ｂと、蓋板４２の他方の側面４２ｂとで突き合わされた部分を突合部Ｊ４とする。 (3) Lid Plate Inserting Step In the lid plate inserting step, as shown in FIGS. 15 and 16, the lid plate 42 is inserted into the concave groove 43 to close the concave groove 43. Here, in the abutting surface between the concave groove 43 and the lid plate 42, a portion which is abutted by one side wall 43 a of the concave groove 43 and one side surface 42 a of the lid plate 42 is defined as an abutting portion J <b> 3. A portion that is abutted between the other side wall 43b and the other side surface 42b of the lid plate 42 is referred to as an abutting portion J4.

（４）接合工程
接合工程では、蓋板４２（凹溝４３）に沿って接合用回転ツールＦを用いて摩擦攪拌を行う。接合工程は、本実施形態ではタブ材を配置するタブ材配置工程と、摩擦攪拌を行う接合工程とを含む。 (4) Joining Step In the joining step, friction stirring is performed using the joining rotary tool F along the lid plate 42 (concave groove 43). In the present embodiment, the joining process includes a tab material arranging process for arranging the tab material, and a joining process for performing frictional stirring.

タブ材配置工程では、図１７の（ａ）に示すように、ベース部材２の一方の側面Ｚｃ及び他方の側面Ｚｄに一対のタブ材３３，３４をそれぞれ配置する。タブ材３３，３４とベース部材２とは溶接によって仮接合する。 In the tab material arranging step, as shown in FIG. 17A, a pair of tab materials 33 and 34 are arranged on one side surface Zc and the other side surface Zd of the base member 2, respectively. The tab members 33 and 34 and the base member 2 are temporarily joined by welding.

接合工程では、図１７の（ａ）及び（ｂ）に示すように、蓋板４２（凹溝４３）に沿って摩擦攪拌を行う。即ち、タブ材３３に設定した開始位置Ｓ_Ｍ４に接合用回転ツールＦを押し込んで、ショルダ部Ｆ１がベース部材２に接触したら、蓋板４２に沿って接合用回転ツールＦを相対移動させ、タブ材３４に設定した終了位置Ｅ_Ｍ４まで連続して摩擦攪拌を行う。 In the joining step, as shown in FIGS. 17A and 17B, friction stirring is performed along the cover plate 42 (concave groove 43). That is, when the joining rotary tool F is pushed into the start position _SM4 set on the tab member 33 and the shoulder portion F1 contacts the base member 2, the joining rotary tool F is relatively moved along the cover plate 42, and the tab Friction stirring is continuously performed up to the end position E _M4 set for the material 34.

図１７の（ｂ）に示すように、接合用回転ツールＦのショルダ部Ｆ１の外径Ｘ_１は、凹溝４３の幅Ａ’よりも大きく設定しているため、蓋板４２の幅方向の中心に沿って接合用回転ツールＦを移動させると、突合部Ｊ３，Ｊ４が塑性化される。このように、本実施形態によれば、一のルートを設定するだけで、突合部Ｊ３，Ｊ４を摩擦攪拌することができるため、第一実施形態に比べて作業手間を大幅に省略することができる。また、摩擦攪拌を行う際に、接合用回転ツールＦが蓋板４２を押し込むため、熱媒体用管２０も押圧されて凹溝４３と熱媒体用管２０を密接させることができる。これにより、熱媒体用管２０の周囲に形成される空隙部２２を低減することができるため、伝熱板４１の熱交換効率を高めることができる。なお、接合工程が終了したら、ベース部材２からタブ材を切除する。 As shown in (b) of FIG. 17, the outer diameter X ₁ of the shoulder portion F1 of the joining rotation tool F is, since the set larger than the width A 'of the groove 43, the width direction of the cover plate 42 When the joining rotary tool F is moved along the center, the abutting portions J3 and J4 are plasticized. As described above, according to the present embodiment, it is possible to friction stir the abutting portions J3 and J4 only by setting one route, so that it is possible to greatly reduce the work labor compared to the first embodiment. it can. Further, when the friction stir is performed, the joining rotary tool F pushes the lid plate 42, so that the heat medium pipe 20 is also pressed, and the concave groove 43 and the heat medium pipe 20 can be brought into close contact with each other. Thereby, since the space | gap part 22 formed in the circumference | surroundings of the pipe | tube 20 for heat media can be reduced, the heat exchange efficiency of the heat exchanger plate 41 can be improved. When the joining process is completed, the tab material is cut out from the base member 2.

ここで図１８は、本実施形態の本接合工程後を示した伝熱板４１を示した斜視図である。伝熱板４１には、接合工程によって、表面塑性化領域Ｗ３が形成される。表面塑性化領域Ｗ３は、熱収縮によって縮むため、伝熱板４１が表面Ｚａ側に凹状となるように反って撓んでしまう可能性がある。特に、伝熱板４１の表面Ｚａに示す地点ａ〜地点ｊのうち、伝熱板４１の四隅に係る地点ａ，ｃ，ｆ，ｈに関しては、その反りが顕著に見られる傾向がある。なお、地点ｊは、伝熱板４１の中心地点を示す。 FIG. 18 is a perspective view showing the heat transfer plate 41 after the main joining process of the present embodiment. A surface plasticization region W3 is formed in the heat transfer plate 41 by a joining process. Since the surface plasticization region W3 shrinks due to thermal contraction, the heat transfer plate 41 may be warped and bent so as to be concave on the surface Za side. In particular, among the points a to j shown on the surface Za of the heat transfer plate 41, the points a, c, f, and h at the four corners of the heat transfer plate 41 tend to be noticeably warped. Note that the point j indicates the center point of the heat transfer plate 41.

（５）矯正工程
矯正工程は、前記した接合工程で発生した反りを解消するために行う工程である。矯正工程は、第一実施形態で示したプレス矯正、衝打矯正又はロール矯正のいずれかを行えばよいため、説明を省略する。 (5) Straightening process The straightening process is a process performed in order to eliminate the warp generated in the joining process described above. The correction process may be performed by any one of the press correction, the hitting correction, and the roll correction shown in the first embodiment, and thus description thereof is omitted.

（６）焼鈍工程
焼鈍工程では、伝熱板４１を焼鈍することにより、伝熱板４１の内部応力を除去する。本実施形態では、熱媒体用管２０に、例えば、マイクロヒーターを通電させて焼鈍を行う。これにより、伝熱板４１の内部応力を除去することができ、伝熱板４１の使用時の変形を防止することができる。 (6) Annealing Step In the annealing step, the internal stress of the heat transfer plate 41 is removed by annealing the heat transfer plate 41. In the present embodiment, the heat medium pipe 20 is annealed, for example, by energizing a micro heater. Thereby, the internal stress of the heat-transfer plate 41 can be removed, and the deformation | transformation at the time of use of the heat-transfer plate 41 can be prevented.

以上説明した第四実施形態に係る伝熱板４１によれば、矯正工程を行うことにより、伝熱板４１の平坦性を高めることができる。また、本実施形態においては凹溝４３を幅狭に形成することにより、一条の摩擦攪拌のみで接合工程を行うことができるため、作業手間を省くことができる。 According to the heat transfer plate 41 according to the fourth embodiment described above, the flatness of the heat transfer plate 41 can be improved by performing the correction process. Moreover, in this embodiment, since the joining groove | channel can be performed only by one line of friction stirring by forming the concave groove 43 narrowly, an operation | work effort can be saved.

［第五実施形態］
第五実施形態は、第四実施形態の変形例である。第五実施形態に係る伝熱板の製造方法は、図１９に示すように、熱媒体用管を有さない点で第四実施形態と相違する。即ち、第四実施形態において、熱媒体用管を用いずに、凹溝４３に直接熱媒体を流動させてもよい。 [Fifth embodiment]
The fifth embodiment is a modification of the fourth embodiment. As shown in FIG. 19, the method for manufacturing a heat transfer plate according to the fifth embodiment is different from the fourth embodiment in that it does not have a heat medium pipe. That is, in the fourth embodiment, the heat medium may be caused to flow directly into the concave groove 43 without using the heat medium pipe.

凹溝４３の下部は、円弧上に切り欠かれているため、凹溝４３に蓋板４２を挿入すると、蓋板４２が隙間４４をあけて凹溝４３に係止される。そして、第四実施形態と同様に、接合工程を行って、ベース部材２と蓋板４２の上部とを摩擦攪拌により一体化させてもよい。
このようにして形成された伝熱板５１に対しても前記した矯正工程を行うことで伝熱板５１の平坦性を高めることができる。 Since the lower portion of the concave groove 43 is cut out on an arc, when the lid plate 42 is inserted into the concave groove 43, the lid plate 42 is engaged with the concave groove 43 with a gap 44. And similarly to 4th embodiment, a joining process may be performed and the base member 2 and the upper part of the cover board 42 may be integrated by friction stirring.
The flatness of the heat transfer plate 51 can be improved by performing the correction process described above on the heat transfer plate 51 formed in this way.

以上、本発明の実施形態について説明したが、本発明の趣旨を逸脱しない範囲において適宜変形が可能である。例えば、本実施形態では、熱媒体用管を平面視略馬蹄状又は平面視蛇行状に配設したが、これに限定されるものではなく他の形態であってもよい。 Although the embodiments of the present invention have been described above, modifications can be made as appropriate without departing from the spirit of the present invention. For example, in the present embodiment, the heat medium pipes are arranged in a substantially horseshoe shape in plan view or a meandering shape in plan view. However, the present invention is not limited to this and may take other forms.

１伝熱板
２ベース部材
６蓋溝
８凹溝
１０蓋板
２０熱媒体用管
２２空隙部
Ｆ接合用回転ツール
Ｊ突合部
Ｐプレス装置
Ｒ１ロール
Ｒ２ロール
Ｔ１第一補助部材
Ｔ２第二補助部材
Ｔ３第三補助部材
Ｗ塑性化領域
Ｚａ表面
Ｚｂ裏面 DESCRIPTION OF SYMBOLS 1 Heat transfer plate 2 Base member 6 Cover groove 8 Concave groove 10 Cover plate 20 Heat medium pipe 22 Cavity part F Joining rotary tool J Butting part P Press apparatus R1 Roll R2 Roll T1 First auxiliary member T2 Second auxiliary member T3 Third auxiliary member W Plasticization zone Za front surface Zb back surface

Claims

A lid groove closing step of inserting a lid plate into the lid groove formed around the concave groove opening on the surface side of the base member;
A joining step in which friction stir is performed by relatively moving the joining rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the correction step, the first auxiliary member that contacts the vicinity of the center of the back surface side of the base member is disposed, and the second auxiliary member and the third auxiliary member that contact the vicinity of the peripheral edge of the surface side of the base member are While correcting the warp by hitting the base member with a striking tool in a state of being arranged on both sides with the first auxiliary member sandwiched therebetween,
Wherein each auxiliary member, the manufacturing method of the heat transfer plate you wherein a hardness than the base member is a material having low.

A heat medium tube insertion step of inserting the heat medium tube into the concave groove formed in the bottom surface of the lid groove opening on the surface side of the base member;
A lid groove closing step of inserting a lid plate into the lid groove;
A joining step in which friction stir is performed by relatively moving the joining rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the correction step, the first auxiliary member that contacts the vicinity of the center of the back surface side of the base member is disposed, and the second auxiliary member and the third auxiliary member that contact the vicinity of the peripheral edge of the surface side of the base member are While correcting the warp by hitting the base member with a striking tool in a state of being arranged on both sides with the first auxiliary member sandwiched therebetween,
Wherein each auxiliary member, the manufacturing method of the heat transfer plate you wherein a hardness than the base member is a material having low.

A heat medium tube insertion step of inserting the heat medium tube into the concave groove formed in the bottom surface of the lid groove opening on the surface side of the base member;
A lid groove closing step of inserting a lid plate into the lid groove;
A joining step in which friction stir is performed by relatively moving the joining rotary tool along the abutting portion between the side wall of the lid groove and the side surface of the lid plate;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the joining step, the gap formed around the heat medium pipe, a manufacturing method of the heat transfer plate you characterized by flowing a plastic flow material that is fluidized by frictional heat.

A lid plate insertion step of inserting the lid plate into the concave groove opened on the surface side of the base member;
A joining step of performing frictional stirring by relatively moving the joining rotary tool along the concave groove;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the correction step, the first auxiliary member that contacts the vicinity of the center of the back surface side of the base member is disposed, and the second auxiliary member and the third auxiliary member that contact the vicinity of the peripheral edge of the surface side of the base member are While correcting the warp by hitting the base member with a striking tool in a state of being arranged on both sides with the first auxiliary member sandwiched therebetween,
Wherein each auxiliary member, the manufacturing method of the heat transfer plate you wherein a hardness than the base member is a material having low.

A heat medium pipe insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A lid plate insertion step of inserting a lid plate into the concave groove;
A joining step of performing frictional stirring by relatively moving the joining rotary tool along the concave groove;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the correction step, the first auxiliary member that contacts the vicinity of the center of the back surface side of the base member is disposed, and the second auxiliary member and the third auxiliary member that contact the vicinity of the peripheral edge of the surface side of the base member are While correcting the warp by hitting the base member with a striking tool in a state of being arranged on both sides with the first auxiliary member sandwiched therebetween,
Wherein each auxiliary member, the manufacturing method of the heat transfer plate you wherein a hardness than the base member is a material having low.

A heat medium pipe insertion step of inserting the heat medium pipe into the concave groove opened on the surface side of the base member;
A lid plate insertion step of inserting a lid plate into the concave groove;
A joining step of performing frictional stirring by relatively moving the joining rotary tool along the concave groove;
A correction step of correcting a warp convex on the back side of the base member formed by the joining step by applying a bending moment that generates a tensile stress on the surface side of the base member, and
In the joining step, an outer diameter of a shoulder portion of the joining rotary tool is set to be larger than a width of the concave groove, and a butt portion in which one side wall of the concave groove and one side surface of the lid plate are abutted with each other. And setting the one route between the other side wall of the concave groove and the abutting portion where the other side surface of the lid plate is abutted, and simultaneously agitating the abutting portions with each other, and rotating the bonding while the cover plate by the pressing force of the tool presses the upper portion of pipe the heat medium, and at least the upper and the base member of the lid plate and friction stirring,
Wherein in the correction step, the by hitting the base member hitting instrument, method of manufacturing a heat transfer plate you characterized by correcting the warpage.