JP2018134667A - Method for production of composite member for anodization, and composite member for anodization - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for production of a composite member for anodization capable of improving strength and anodizability, and the composite member for anodization.SOLUTION: A method for production of a composite member for anodization includes: a process of laminating the first and second metallic members 3 and 4 above and below a core material 2 and making the monolayer brazing sheets comprising an Al-Si-Mg alloy intervene between the core material and the first metallic member, and also that material and the second metallic member to carry out the fluxless planar brazing of the core material 2 and the metallic member 3, and that material 2 and the metallic member 4; a process of overlapping the peripheral edge parts of the members 3 and 4 to form an overlapping part J; and a process of friction-stirring the overlapping part J over circumference using a rotary tool F for joint having a stirring pin F2. The method is characterized in that the strength of the core material 2 is higher than that of the members 3 and 4.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a method for producing an anodizing composite member and an anodizing composite member.

  A clad material formed by overlapping different types of metal members is known (see Patent Document 1). According to the clad material, performance that cannot be obtained with a metal member made of a single material can be exhibited. For example, although the strength is low only with an aluminum alloy, the strength can be increased with a clad material made of an aluminum alloy and stainless steel.

  On the other hand, aluminum or an aluminum alloy can be subjected to anodic oxidation treatment (alumite treatment) to form an oxide film on the surface, thereby improving corrosion resistance, wear resistance, decoration (colorability) and the like. In the anodizing treatment, a target member is disposed in an electrolytic solution, and an oxide film is generated on the surface of aluminum or an aluminum alloy by electrolysis.

JP 2014-79800 A

  However, when anodizing is performed on a clad material composed of an aluminum alloy and a dissimilar metal, the dissimilar metal may be dissolved in the electrolytic solution, resulting in a problem that the anodizing property is lowered.

  From such a viewpoint, an object of the present invention is to provide a method for producing an anodizing composite member and an anodizing composite member that can improve strength and anodizing property.

  In order to solve such a problem, the present invention provides a metal core material having a plate shape and a first metal member and a second metal made of aluminum or an aluminum alloy which have a plate shape and are formed larger than the core material. Preparing a member, laminating the first metal member and the second metal member above and below the core material, and forming a single-layer brazing sheet made of an Al-Si-Mg alloy into the core material and the core material Flux between the core material, the first metal member, the core material, and the second metal member, respectively, between the first metal member and between the core material and the second metal member. A surface brazing step of brazing in a loess, a polymerization step in which a peripheral portion of the first metal member and a peripheral portion of the second metal member are overlapped to form a superposed portion around the core material, and stirring Rotating tool with pin Using a friction stirring step of inserting a stirring pin of the rotating tool from the surface of the first metal member, and relatively moving the rotating tool to frictionally stir the overlapped portion over the entire circumference, The strength of the core material is formed higher than the strength of the first metal member and the second metal member.

Further, the present invention provides a metal core material having a plate shape and a preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy which have a plate shape and are formed larger than the core material. The first metal member and the second metal member are laminated above and below the core material, and a single layer brazing sheet made of an Al-Si-Mg alloy is interposed between the core material and the first metal member. And a superposition part around the core material by interposing the peripheral part of the first metal member and the peripheral part of the second metal member, respectively, between the core material and the second metal member. Using a surface brazing process in which the core material and the first metal member and the core material and the second metal member are brazed in a fluxless manner, and a rotary tool including a stirring pin, Mixing pin of the rotating tool And a friction stirring step of frictionally stirring the overlapped portion over the entire circumference by relatively moving the rotary tool and inserting the strength of the core material into the first metal member. It is characterized by being formed higher than the strength of the metal member and the second metal member.

  According to this method, since the core material having high strength is provided and the core material, the first metal member, and the second metal member are brazed, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member and the second metal member made of aluminum or aluminum alloy, the electrolyte does not contact the core material during the anodizing process, so the color tone of the film is the core. Anodizing property can be improved without being affected by the material. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

  In the friction stirring step, it is preferable to perform friction stirring in a state where only the stirring pin of the rotating tool is in contact with only the first metal member or both the first metal member and the second metal member. .

  According to this method, the load applied to the friction stirrer can be reduced.

  In addition, after the friction stirring step, a cutting step of cutting off the end portions of the first metal member and the second metal member with the groove of the plasticized region formed by the friction stirring step as a boundary is included. Is preferred.

  According to this method, the end portions of the first metal member and the second metal member can be easily cut off.

  Further, the present invention provides a metal core material having a plate shape and a preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy which have a plate shape and are formed larger than the core material. The first metal member and the second metal member are laminated above and below the core material, and a single layer brazing sheet made of an Al-Si-Mg alloy is interposed between the core material and the first metal member. And the surface which is interposed between the core material and the second metal member, respectively, and brazes the core material, the first metal member, and the core material and the second metal member in a fluxless manner. A brazing step, an interposed member made of aluminum or aluminum alloy is inserted between the peripheral edge of the first metal member and the peripheral edge of the second metal member, and the back surface of the first metal member and the intermediate The surface of the member is heavy Using the rotation tool provided with the superposition | polymerization process which forms the joined 1st superposition | polymerization part, the 2nd superposition | polymerization part with which the surface of the said 2nd metal member and the back surface of the said interposed member were overlapped, and a stirring pin A friction stir step for friction stir the entire overlapping portion and the second overlapping portion over the entire circumference, and the strength of the core material is higher than the strength of the first metal member and the second metal member It is characterized by doing.

Further, the present invention provides a metal core material having a plate shape and a preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy which have a plate shape and are formed larger than the core material. The first metal member and the second metal member are laminated above and below the core material, and a single layer brazing sheet made of an Al-Si-Mg alloy is interposed between the core material and the first metal member. And an intermediate member made of aluminum or an aluminum alloy between the peripheral portion of the first metal member and the peripheral portion of the second metal member. The first overlapping portion in which the back surface of the first metal member and the surface of the interposed member are overlapped, and the second overlapped portion of the surface of the second metal member and the back surface of the interposed member While forming a polymerization part, A brazing step of brazing the material, the first metal member, and the core material and the second metal member, respectively, and a rotary tool provided with a stirring pin; A friction stir step for friction stir around the entire circumference of the two overlapping portions, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member. .

  According to this method, since the core material having high strength is provided and the core material, the first metal member, and the second genus member are brazed, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member, the second metal member, and the interposed member made of aluminum or aluminum alloy, the electrolyte does not contact the core material during the anodizing process. The color tone of the film is not affected by the core material, and the anodizing property can be improved. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

Further, in the friction stirring step, the rotating tool is inserted from the surface of the first metal member, and only the stirring pin of the rotating tool is only the first metal member or the first metal member and the interposed member. Friction stirring is preferably performed in a state where both are brought into contact.
Further, in the friction stirring step, the rotating tool is inserted from the back surface of the second metal member, and only the stirring pin of the rotating tool is only the second metal member, or the second metal member and the interposed member. Friction stirring is preferably performed in a state where both are brought into contact.

  According to this method, the load applied to the friction stirrer can be reduced.

  Further, the present invention provides a metal core material having a plate shape, a first metal member made of aluminum or an aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate, and A preparation step of preparing a second metal member made of aluminum or aluminum alloy having a second bottom plate and a second peripheral wall portion rising from a peripheral edge of the second bottom plate, which is formed slightly larger than the first metal member; And laminating the first metal member and the second metal member above and below the single metal brazing sheet made of an Al—Si—Mg-based alloy between the core material and the first metal member and the core material. And the second metal member, respectively, and brazing the core material and the back surface of the first bottom plate and brazing the core material and the surface of the second bottom plate without flux. The rotation tool using a rotation tool provided with a superposition step of superposing the outer peripheral surface of the first peripheral wall portion and the inner peripheral surface of the second peripheral wall portion to form a superposed portion, and a stirring pin. The stirring pin is inserted from at least one of the inner peripheral surface of the first peripheral wall portion and the outer peripheral surface of the second peripheral wall portion, and the rotating tool is relatively moved to frictionally stir the overlapping portion over the entire circumference. A friction stirring step, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member.

Further, the present invention provides a metal core material having a plate shape, a first metal member made of aluminum or an aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate, and A preparation step of preparing a second metal member made of aluminum or aluminum alloy having a second bottom plate and a second peripheral wall portion rising from a peripheral edge of the second bottom plate, which is formed slightly larger than the first metal member; And laminating the first metal member and the second metal member above and below the single metal brazing sheet made of an Al—Si—Mg-based alloy between the core material and the first metal member and the core material. And the second metal member, respectively, and overlapping the outer peripheral surface of the first peripheral wall portion and the inner peripheral surface of the second peripheral wall portion to form a superposed portion, Material and the back of the first bottom plate And a brazing process for brazing the core material and the surface of the second bottom plate without flux, respectively, and a rotating tool having a stirring pin, and the stirring pin of the rotating tool is moved to the first peripheral wall portion. And a friction stirring step of frictionally stirring the overlapped portion over the entire circumference by inserting the rotating tool relative to each other and inserting the core from the outer peripheral surface of the second peripheral wall portion. The strength of the material is higher than the strength of the first metal member and the second metal member.

  According to this method, since the core material having high strength is provided and the core material, the first metal member, and the second metal member are brazed, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member and the second metal member made of aluminum or aluminum alloy, the electrolyte does not contact the core material during the anodizing process, so the color tone of the film is the core. Anodizing property can be improved without being affected by the material. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

  Further, in the friction stirring step, only the stirring pin of the rotary tool is brought into contact with only one of the first metal member and the second metal member, or both the first metal member and the second metal member. It is preferable to carry out friction stirring in a heated state.

  According to this method, the load applied to the friction stirrer can be reduced.

  Further, after the friction stirring step, a cutting step of cutting off the end portion of the first peripheral wall portion and the end portion of the second peripheral wall portion with the groove of the plasticized region formed by the friction stirring step as a boundary; , Preferably.

  According to this method, the end portions of the first metal member and the second metal member can be easily cut off.

  The present invention also provides a metal core material having a plate shape, a first metal member made of aluminum or an aluminum alloy, which has a plate shape and is formed larger than the core material, and is laminated on the top and bottom of the core material, respectively. And the strength of the core material is higher than the strength of the first metal member and the second metal member, and the core material, the first metal member, and the core material. And the second metal member are joined to each other, and the periphery of the first metal member and the periphery of the second metal member are friction stir welded over the entire periphery. .

  According to this configuration, since the core material having high strength is provided and the core material, the first metal member, and the second metal member are joined, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member and the second metal member made of aluminum or aluminum alloy, the electrolyte does not contact the core material during the anodizing process, so the color tone of the film is the core. Anodizing property can be improved without being affected by the material. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

  The present invention also provides a metal core material having a plate shape, a first metal member made of aluminum or an aluminum alloy, which has a plate shape and is formed larger than the core material, and is laminated on the top and bottom of the core material, respectively. An intervening member made of aluminum or aluminum alloy disposed around the core member between the back surface of the first metal member and the front surface of the second metal member; and the core The strength of the material is higher than the strength of the first metal member and the second metal member, and the core material, the first metal member, and the core material and the second metal member are joined to each other. In addition, the peripheral edge of the first metal member and the interposed member are friction stir welded over the entire circumference, and the peripheral edge of the second metal member and the interposed member extend over the entire circumference. The friction stir welding To.

  According to this configuration, since the core material having high strength is provided and the core material, the first metal member, and the second metal member are joined, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member, the second metal member, and the interposed member made of aluminum or aluminum alloy, the electrolytic solution does not contact the core material during the anodizing treatment, so that the coating The color tone is not affected by the core material, and the anodizing property can be improved. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

  The present invention also includes a first metal member made of aluminum or aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate, and rising from the periphery of the second bottom plate and the second bottom plate. A second metal member made of aluminum or aluminum alloy having a second peripheral wall portion and formed larger than the first metal member, and a plate disposed between the back surface of the first bottom plate and the surface of the second bottom plate A metal core material having a shape, and the strength of the core material is higher than the strength of the first metal member and the second metal member, and the core material and the first bottom plate The back surface and the core material and the surface of the second bottom plate are respectively joined, and the first peripheral wall portion and the second peripheral wall portion are friction stir welded over the entire periphery. And

  According to this configuration, since the core material having high strength is provided and the core material, the first metal member, and the second metal member are joined, the strength can be increased. In addition, since the core material is hermetically sealed with the first metal member and the second metal member made of aluminum or aluminum alloy, the electrolyte does not contact the core material during the anodizing process, so the color tone of the film is the core. Anodizing property can be improved without being affected by the material. Further, since the periphery of the core material is friction stir welded, the sealing performance can be improved.

  According to the method for producing an anodizing composite member and the anodizing composite member according to the present invention, the strength can be increased and the anodizing property can be improved.

It is a perspective view which shows the composite member which concerns on 1st embodiment of this invention. It is sectional drawing of FIG. It is sectional drawing which shows the preparatory process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the surface brazing process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows before the superposition | polymerization process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the superposition | polymerization process after the manufacturing method of the composite member which concerns on 1st embodiment. It is a perspective view which shows the friction stirring process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the friction stirring process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the cutting process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the modification of the superposition | polymerization process of the manufacturing method of the composite member which concerns on 1st embodiment. It is sectional drawing which shows the preparatory process of the manufacturing method of the composite member which concerns on 2nd embodiment of this invention. It is sectional drawing which shows the surface brazing process and the superposition | polymerization process of the manufacturing method of the composite member which concerns on 2nd embodiment. It is sectional drawing which shows the 1st friction stirring process of the manufacturing method of the composite member which concerns on 2nd embodiment. It is sectional drawing which shows the 2nd friction stirring process of the manufacturing method of the composite member which concerns on 2nd embodiment. It is sectional drawing which shows the cutting process of the manufacturing method of the composite member which concerns on 2nd embodiment. It is sectional drawing which shows the modification concerning 2nd embodiment. It is a perspective view which shows the manufacturing method of the composite member which concerns on 3rd embodiment of this invention. It is sectional drawing of FIG. It is a perspective view which shows the preparatory process of the manufacturing method of the composite member which concerns on 3rd embodiment. It is sectional drawing which shows the surface brazing process of the manufacturing method of the composite member which concerns on 3rd embodiment. It is a perspective view which shows the superposition | polymerization process and friction stirring process of the manufacturing method of the composite member which concerns on 3rd embodiment. It is sectional drawing which shows the cutting process of the manufacturing method of the composite member which concerns on 3rd 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 composite member 1 for anodizing treatment according to the first embodiment is disposed under a core material 2, a first metal member 3 disposed on the core material 2, and the core material 2. The second metal member 4 is formed and has a thin plate shape. An anodizing composite member (hereinafter also referred to as “composite member”) 1 is a metal member for the purpose of anodizing.

  The core material 2 is a plate-shaped metal member having a rectangular shape. The core material 2 is formed of a material having higher strength than the first metal member 3 and the second metal member 4. The core material 2 can be made of, for example, an iron-based material (iron steel, stainless steel, high-tensile steel, etc.), titanium, a titanium alloy, copper, a copper alloy, or the like. When the core material 2 is an iron-based material, titanium, or a titanium alloy, the strength of the composite member 1 can be reliably increased. Moreover, when the core material 2 is made of copper or a copper alloy, the thermal conductivity of the composite member 1 can be increased. The thickness of the core material 2 is not particularly limited, but is about 1 to 2 mm in the present embodiment, for example.

  As shown in FIG. 2, the first metal member 3 is a plate-like metal member having a rectangular shape. The first metal member 3 is made of aluminum or an aluminum alloy and is slightly larger than the core material 2. The front surface 2a of the core material 2 and the back surface 3b of the first metal member 3 are joined by surface brazing.

  The 2nd metal member 4 is a plate-shaped metal member which exhibits a rectangle. The second metal member 4 is made of aluminum or an aluminum alloy and is slightly larger than the core material 2. The back surface 2b of the core material 2 and the front surface 4a of the second metal member 4 are joined by surface brazing.

  Although the material of the 1st metal member 3 and the 2nd metal member 4 will not be restrict | limited especially if it is aluminum or aluminum alloy, For example, it is preferable that it is 1000 type | system | group. Although the thickness in particular of the 1st metal member 3 and the 2nd metal member 4 is not restrict | limited, In this embodiment, it is about 0.1-1.0 mm, for example.

  The peripheral part of the 1st metal member 3 and the 2nd metal member 4 has the superposition | polymerization part J formed over the perimeter. The overlapping portion J is a portion where the back surface 3 b of the first metal member 3 and the surface 4 a of the second metal member 4 are overlapped at the peripheral portions of the first metal member 3 and the second metal member 4. The height position of the overlapping portion J is formed to be substantially the same position as the center of the core material 2 in the plate thickness direction. Since the peripheral portions of the first metal member 3 and the second metal member 4 are joined by friction stir welding, a plasticized region W is formed. The plasticized region W is formed over the entire circumference of the outer end portion of the composite member 1.

  Next, a method for manufacturing the composite member for anodizing treatment according to the first embodiment (hereinafter also referred to as “composite member manufacturing method”) will be described. The manufacturing method of a composite member performs a preparation process, a surface brazing process, a polymerization process, a friction stirring process, and a cutting process.

  The preparation step is a step of preparing each member as shown in FIG. In a preparation process, the core material 2, the 1st metal member 3, the 2nd metal member 4, and the brazing sheets 5 and 6 are prepared. In the preparation step, the intermediate member N1 is formed by laminating the second metal member 4, the brazing sheet 6, the core material 2, the brazing sheet 5, and the first metal member 3 in this order from the bottom.

  The brazing sheets 5 and 6 are flux-less brazing specifications and are thin single-layer sheets made of an Al—Si—Mg alloy brazing material. The brazing sheets 5 and 6 are formed in the same size as the core material 2. The thickness of the brazing sheets 5 and 6 is not particularly limited, but is about 20 to 100 μm in the present embodiment, for example.

  The surface brazing step is a step of performing surface brazing using a pressure brazing jig 20 as shown in FIG. The pressure brazing jig 20 is a jig mainly including a lower plate 21, an intermediate plate 22, an upper plate 23, and a plurality of support columns 24. The middle plate 22 and the upper plate 23 are formed so as to be movable in the vertical direction along the column 24. A leaf spring 25 is interposed between the middle plate 22 and the upper plate 23.

Si in the brazing sheets 5 and 6 is an element for lowering the liquidus temperature of the brazing sheets 5 and 6 and improving wettability during surface brazing depending on the content thereof. If the Si content is less than 1.0% by mass, the temperature of the liquidus line of the brazing sheets 5 and 6 becomes too high, and the brazing sheets 5 and 6 are dissolved even when reaching a predetermined brazing temperature. Insufficient brazing strength (shear stress) may not be obtained. Conversely, if the Si content exceeds 12% by mass, there is a high possibility that primary Si precipitates (crystallizes) in the center of the ingot during casting, and a healthy cold-rolled sheet is obtained. However, it becomes difficult to obtain brazing sheets 5 and 6 having a microscopically homogeneous structure.
Therefore, the Si content in the brazing material is in the range of 1.0 to 12% by mass. A more preferable Si content is in the range of 2.0 to 12% by mass. A more preferable Si content is in the range of 3.0 to 12% by mass.

Mg in brazing sheets 5 and 6 acts as a reducing agent by being oxidized by itself, so brazing heating aluminum or aluminum alloy members (first metal member 3 and second metal member 4) and brazing sheet It is considered to be an element for suppressing the oxidation of aluminum at the interface with the 5 and 6 brazing materials and improving the wettability during surface brazing. If the Mg content is less than 0.1% by mass, depending on the brazing temperature and holding time, the effect may be insufficient and sufficient brazing strength (shear stress) may not be obtained. . On the other hand, if the Mg content exceeds 5.0% by mass, the load on the roll during hot rolling of the ingot is increased, and ear cracks also occur, so that cold rolling becomes difficult. In consideration of the workability of the brazing material, the Mg content is preferably low.
Therefore, the Mg content in the brazing material is in the range of 0.1 to 5.0% by mass. A more preferable Mg content is in the range of 0.1 to 4.0% by mass. Further preferred Mg content is 0.
It is the range of 1-3 mass%.

  The balance of the brazing sheets 5 and 6 is made of Al and inevitable impurities. Inevitable impurities include Fe, Cu, Mn, Zn, and the like. For these elements, Fe: less than 1.0% by mass, Cu: less than 1.0% by mass, Mn: less than 1.0% by mass, If it is the range of less than Zn: 1.0 mass%, the effect of this invention will not be prevented. Therefore, the content of the components as inevitable impurities is preferably less than 1.0% by mass.

  In the surface brazing step, the intermediate member N1 is disposed between the lower plate 21 and the intermediate plate 22, and surface brazing is performed by applying a pressing force under a predetermined condition. What is necessary is just to set the conditions of surface brazing suitably by the material of each member. For example, when the core material 2 is copper, the temperature is about 510 to 550 ° C., the pressing force is about 1.0 MPa or more, an inert gas atmosphere, and the pressing state is maintained for 2 minutes or more. Nitrogen, argon, and helium can be used as the inert gas. As the nitrogen gas, it is preferable to use industrial nitrogen gas (oxygen concentration is 10 ppm or less). If the bonding strength is not a problem, bonding is possible even in the air.

  For example, when the core material 2 is an iron-based material, the temperature is set to about 570 to 610 ° C., the pressing force is set to about 1.0 MPa or more, an inert gas atmosphere, and the pressed state is maintained for 2 minutes or more.

  Thereby, the core material 2 and the first metal member 3 and the core material 2 and the second metal member 4 are brazed. Since the brazing sheets 5 and 6 are single layers in this embodiment, the cost can be reduced. In the surface brazing process, surface brazing is performed in an inert gas atmosphere without using flux. Thus, in the surface brazing process, a specific surface pressure is applied in a surface contact state to melt the brazing sheets 5 and 6, and aluminum or an aluminum alloy member (the first metal member 3 and the second metal member 4). ) And the core material 2, the molten brazing material can be actively discharged from the interface. Therefore, the thickness of the intermetallic compound layer formed between the aluminum or aluminum alloy member and the core material 2 can be reduced. For example, when copper or a copper alloy is used for the core material 2, the intermetallic compound layer can be made thin, so that the thermal conductivity can be kept high.

  The superposition | polymerization process is a process of forming the superposition | polymerization part J by overlapping the peripheral part of the 1st metal member 3 and the 2nd metal member 4 using the shaping | molding die K, as shown in FIG.5 and FIG.6. The mold K is composed of a lower mold K1 and an upper mold K2. The lower mold K1 has a base surface K1b and a recess K1a formed to be recessed in the base surface K1b. The upper mold K2 has a base surface K2b and a recess K2a formed to be recessed in the base surface K2b. The recesses K1a and K2a are formed at positions corresponding to the core material 2.

  In the polymerization step, the intermediate member N1 is disposed on the lower mold K1. And the upper mold | type K2 is dropped, the peripheral part of the 1st metal member 3 and the 2nd metal member 4 is pressed with the base surface K1b and the base surface K2b, and the superposition | polymerization part J is formed.

  As shown in FIG. 7, the friction stirring step is a step of performing friction stir welding over the entire circumference of the core material 2 with respect to the overlapped portion J using the rotating tool F for bonding. The joining rotary tool F corresponds to a “rotary tool” in the claims.

  The joining rotary tool F includes a connecting portion F1 and a stirring pin F2, and is made of, for example, tool steel. The connection part F1 is a part attached to a friction stirrer (not shown) and has a cylindrical shape. The stirring pin F2 hangs down from the connecting portion F1 and is coaxial with the connecting portion F1. The stirring pin F2 is tapered as it is separated from the connecting portion F1. A spiral groove is formed on the outer peripheral surface of the stirring pin F2. In the present embodiment, the spiral groove is formed in a counterclockwise direction from the proximal end toward the distal end in order to rotate the joining rotary tool F to the right.

  In addition, when rotating the rotation tool F for joining counterclockwise, it is preferable to form a spiral groove clockwise as it goes to a front-end | tip from a base end. By setting the spiral groove in this way, the metal plastically fluidized during friction stirring is guided to the tip side of the stirring pin F2 by the spiral groove. Thereby, the quantity of the metal which overflows to the exterior of a to-be-joined metal member (the 1st metal member 3, the 2nd metal member 4) can be decreased.

  In the friction stirring step, the rotating tool F for bonding rotated to the right is inserted into the start position Sp set at the peripheral edge of the surface 3a of the first metal member 3, and is relatively moved along the overlapping portion J. In the friction stirring step, the connecting portion F1 is separated from the intermediate member N1, and the friction stirring is performed with the base end side of the stirring pin F2 exposed. The moving direction of the joining rotary tool F may be either, but in the present embodiment, it is set to be counterclockwise with respect to the core material 2. As shown in FIG. 8, the insertion depth of the stirring pin F <b> 2 is set so as to contact the first metal member 3 and the second metal member 4. A plasticized region W is formed on the movement locus of the welding rotary tool F. In the friction stirring step, it is preferable that the start end and the end end of the plasticizing region W overlap. In addition, you may perform a friction stirring process, setting insertion depth to the extent that only the stirring pin F2 contacts only the 1st metal member 3. FIG. In this case, the superposed portion J is plastically fluidized and joined by frictional heat in which the stirring pin F2 and the first metal member 3 are in contact.

  In the friction stirring step, it is preferable to set the joining conditions so that burrs V are generated outside the joining center line X. The position where the burrs V are generated varies depending on the joining conditions. The joining conditions include the rotational speed, the rotational direction, the moving speed (feeding speed), the traveling direction, the inclination angle (taper angle) of the stirring pin F2, the metal member to be joined (first metal member 3, It is determined by each element such as the material of the second metal member 4), the thickness of the metal member to be joined and the combination of these elements.

  For example, when the rotational speed of the rotating tool for welding F is low, the shearing side (advancing side: rotation) compared to the flow side (retreating side: side where the moving speed of the rotary tool is subtracted from the tangential speed on the outer periphery of the rotating tool). Since the temperature of the plastic fluidized material is likely to increase on the side where the moving speed of the rotary tool is added to the tangential speed on the outer periphery of the tool, more burrs tend to occur on the shear side outside the plasticized region. On the other hand, for example, when the rotational speed of the rotating tool F for bonding is high, the temperature of the plastic fluidized material increases on the shear side, but a lot of burrs are generated on the flow side outside the plasticized region because the rotational speed is high. There is a tendency.

  In the present embodiment, since the rotational speed of the joining rotary tool F is set high, there is a tendency that many burrs V are generated on the flow side outside the plasticizing region W as shown in FIG. In the present embodiment, the groove P is formed on the surface of the plasticized region W outside the bonding center line X. The concave groove P is a part that can be deepened by friction stir welding. Moreover, the moving speed (feeding speed) of the joining rotary tool F can be increased by setting the rotational speed of the joining rotary tool F faster. Thereby, a joining cycle can be shortened.

  The cutting step is a step of cutting the outer peripheral edge of the intermediate member N1, as shown in FIG. In the cutting process, a region outside the portion including the plasticized region W is cut. In the excision step, in the present embodiment, a portion outside the concave groove P is excised with the concave groove P as a boundary. Thereby, the composite member 1 shown in FIG. 1 is formed.

  According to the composite member 1 and the composite member manufacturing method described above, the core member 2 having high strength is provided, and the core member 2, the first metal member 3, and the second metal member 4 are brazed. The strength of the composite member 1 can be increased. Further, since the core material 2 is hermetically sealed with the first metal member 3 and the second metal member 4 made of aluminum or aluminum alloy, the electrolytic solution does not come into contact with the core material 2 during the anodizing treatment. The color tone is not affected by the core material 2 and the anodizing treatment property can be improved. Moreover, since the circumference | surroundings of the core material 2 are friction stir welding, a sealing performance can be improved. That is, according to the composite member 1, it is possible to achieve both improvement in strength and improvement in anodizing property. By subjecting the composite member 1 to anodic oxidation treatment, corrosion resistance, wear resistance, decorativeness (colorability) and the like can be improved.

  In addition, it is preferable to perform friction stirring in a state where only the stirring pin F2 of the rotating tool F for welding is in contact with only the first metal member 3 or both the first metal member 3 and the second metal member 4. Thereby, compared with the case where the shoulder part of a rotary tool is pushed in and friction stir welding is performed, the load concerning a friction stirrer can be reduced.

  In the excision process of the present embodiment, the outer end of the intermediate member N1 can be easily excised with the concave groove P as a boundary. In addition, since the joining conditions are set so that the concave groove P is formed outside the joint center line X, a large amount of the joint (plasticized region W) can be left even if the concave groove P is cut off. . Thereby, joint strength can be raised. In the excision process, since the joining conditions are set so that the burrs V are gathered outside the plasticized region W, the burrs V can be excised together with the surplus pieces.

  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, FIG. 10 is a cross-sectional view showing a modification of the polymerization step of the method for manufacturing the composite member according to the first embodiment. This modification differs from the first embodiment in that no recess is formed on the base surface K1b. Also in the superposition | polymerization process of the said modification, the peripheral part of the intermediate member N1 is pressed with the lower mold | type K1 and the upper mold | type K2, and the superposition | polymerization part J is formed. The height position of the overlapping portion J is substantially the same height position as the back surface 2 b of the core material 2.

  In the friction stirring step, friction stir welding may be performed using a rotary tool (not shown) having a shoulder portion and a stirring pin. Further, friction stirring may be performed from both the front surface and the back surface of the intermediate member N1. Moreover, when the peripheral part of the 1st metal member 3 and the 2nd metal member 4 is pressed by the surface brazing process and a superposition | polymerization part is formed, since a superposition | polymerization process will be included in a surface brazing process, A separate polymerization step may not be performed using the mold K. The excision process may be omitted.

[Second Embodiment]
Next, the composite member and the method for manufacturing the composite member according to the second embodiment of the present invention will be described. The composite member according to the second embodiment is different from the first embodiment in that an interposed member 7 is used. In the manufacturing method of the composite member which concerns on 2nd embodiment, a preparatory process, a surface brazing process, a superposition | polymerization process, a friction stirring process, and a cutting process are performed. In the second embodiment, the description will focus on the parts that are different from the first embodiment.

  A preparation process is a process of preparing each member, as shown in FIG. In the preparation step, the core material 2, the first metal member 3, the second metal member 4, the brazing sheets 5 and 6, and the interposed members 7 and 7 are prepared. In the preparation step, the intermediate member N1 is formed by laminating the second metal member 4, the brazing sheet 6, the core material 2, the brazing sheet 5, and the first metal member 3 in this order from the bottom. The intermediate member N1 does not include the interposed member 7.

  In the surface brazing process, the surface brazing process is performed on the intermediate member N1 in the same manner as in the first embodiment. The intermediate member N1 is integrally joined by the surface brazing process.

  In the polymerization step, as shown in FIG. 12, the interposed member 7 is disposed between the back surface 3 b of the first metal member 3 and the surface 4 a of the second metal member 4, and a molding die having a flat molding surface ( In this step, the intermediate member N1 and the interposed member 7 are pressed in the plate thickness direction using the first overlapping portion J1 and the second overlapping portion J2.

  The interposed member 7 is a plate-like aluminum or aluminum alloy member. The interposed member 7 has the same thickness as that of the core material 2. In this embodiment, four interposed members 7 are used, and the outer peripheral surface of the core material 2 is covered over the entire periphery. In other words, the sum of the lengths of the plate width dimension of the interposed member 7 and the plate width dimension of the core member 2 is equal to the plate width dimension of the first metal member 3. The interposed member 7 is not particularly limited as long as it is aluminum or an aluminum alloy, but in the present embodiment, it has the same component composition as the first metal member 3 and the second metal member 4.

  By the polymerization step, the front surface 7a of the interposed member 7 and the back surface 3b of the first metal member 3 are overlapped to form the first polymerization portion J1. Moreover, the back surface 7b of the interposed member 7 and the surface 4a of the second metal member 4 are overlapped to form the second overlapping portion J2. The first overlapping portion J1 and the second overlapping portion J2 are formed in a rectangular frame shape around the core material 2.

  As shown in FIGS. 13 and 14, the friction stirring step performs a first friction stirring step in which friction stirring is performed on the first polymerization portion J1 and a second friction stirring step in which friction stirring is performed on the second polymerization portion J2. In the first friction agitation step, friction agitation welding is performed in the same manner as in the first embodiment using the welding rotary tool F. That is, in the first friction agitation step, the first rotating tool F is inserted from the surface 3a of the first metal member 3 and only the agitation pin F2 is in contact with the first metal member 3 and the interposition member 7. Relative movement is performed along the overlapping portion J1.

  In the first friction stirring step, the rotating tool for joining is formed so that the concave groove P is formed outside the plasticizing region W1 and the burr V is formed outside the plasticizing region W1 with respect to the joining center line X. F joining conditions are set. Note that the joining rotary tool F may be set so that only the stirring pin F <b> 2 contacts only the first metal member 3. In this case, the first overlapping portion J1 is plastically fluidized and joined by frictional heat between the stirring pin F2 and the first metal member 3.

  In the second friction stirring step, as shown in FIG. 14, the intermediate member N1 and the interposed member 7 are turned over, and the friction stirring step is performed from the second metal member 4 side. That is, in the second friction agitation step, the second rotating tool F is inserted from the back surface 4b of the second metal member 4 and only the agitation pin F2 is in contact with the second metal member 4 and the interposed member 7 in the second state. Relative movement is performed along the overlapping portion J2.

  In the second friction stirring step, the bonding rotary tool is formed so that the concave groove P is formed outside the plasticizing region W2 and the burr V is formed outside the plasticizing region W2 with respect to the bonding center line X. F joining conditions are set. Note that the joining rotary tool F may be set so that only the stirring pin F <b> 2 contacts only the second metal member 4. In this case, the second overlapping portion J2 is plastically fluidized and joined by frictional heat between the stirring pin F2 and the second metal member 4.

  The cutting step is a step of cutting the outer end portions of the first metal member 3, the second metal member 4, and the interposition member 7 as shown in FIG. In the cutting process, the outside of the boundary line S is cut with the boundary line S passing through the concave groove P as a boundary. Thereby, the composite member 1A according to the second embodiment is formed.

  The composite member 1A includes a core material 2, a first metal member 3 brazed to the surface 2a of the core material 2, a second metal member 4 brazed to the back surface 2b of the core material 2, and a core material. 2 is constituted by an interposed member 7 interposed between the first metal member 3 and the second metal member 4. The first overlapping portion J1 and the second overlapping portion J2 are formed with plasticized regions W1 and W2, respectively, and are joined over the entire circumference by friction stirring.

  The effect substantially equivalent to 1st embodiment can be acquired also by the manufacturing method and composite member 1A of the composite member which concern on 2nd embodiment demonstrated above. Moreover, in this embodiment, since the interposition member 7 can be inserted and the side surface of the interposition member 7 and the side surface of the core material 2 can be contacted, a gap is formed around the core material 2. Can be prevented. Moreover, since the interposition member 7 is made of aluminum or an aluminum alloy, the core material 2 is not exposed and is suitable for anodizing treatment.

  In the manufacturing method of the composite member which concerns on 2nd embodiment, it is not limited to an above-described form. For example, although four interposition members 7 are used in the present embodiment, a frame shape may be used. Moreover, you may set the insertion depth of the stirring pin F2 so that plasticization area | regions W1 and W2 may overlap. Further, in the friction stirring process, for example, the joining rotary tool F is inserted from the front surface 3a of the first metal member 3 without performing the front and back separately, and both the first overlapping portion J1 and the second overlapping portion J2 are rubbed. Stir welding can also be performed. In this case, only the stirring pin F2 is brought into contact with all of the first metal member 3, the second metal member 4, and the interposed member 7, or the friction is caused in contact with only the first metal member 3 and the interposed member 7. Stirring can be performed.

  In the friction stirring step, friction stir welding may be performed using a rotary tool (not shown) having a shoulder portion and a stirring pin. Moreover, after arrange | positioning the interposed member 7 between the 1st metal member 3 and the 2nd metal member 4, you may perform a surface brazing process. In this case, the peripheral portions of the first metal member 3 and the second metal member 4 and the interposition member 7 are pressed to form the first overlapping portion J1 and the second overlapping portion J2, so that during the surface brazing process Therefore, a separate polymerization step may not be performed using a mold. The excision process may be omitted.

  Further, in the first embodiment and the second embodiment, the shape of the composite members 1 and 1A is made to be a rectangular shape in plan view, but other square shapes such as a triangle and a pentagon may be used, and a circular shape and an elliptic shape may be used. It is good. FIG. 16 is a cross-sectional view showing a modification according to the second embodiment. As shown in FIG. 16, the composite member 1A may be curved so that the surface 3a of the first metal member 3 is concave. Also in the first embodiment, the composite member 1 may be curved. Further, the composite member 1 according to the first embodiment and the composite member 1A according to the second embodiment may be finely finished by chamfering the front surface, the back surface, and the side surfaces.

[Third embodiment]
Next, the manufacturing method and composite member of the composite member which concern on 3rd embodiment are demonstrated. As shown in FIG. 17, the composite member 1B according to the third embodiment is different from the other embodiments in that it is in a tray shape. The third embodiment will be described with a focus on differences from the other embodiments.

  As shown in FIGS. 17 and 18, the composite member 1 </ b> B includes a core material 2, a first metal member 3 </ b> B disposed inside the core material 2, and a second metal member 4 </ b> B disposed outside the core material 2. And is mainly composed. The first metal member 3 </ b> B includes a rectangular first bottom plate 11 and a first peripheral wall portion 12 that rises from the periphery of the first bottom plate 11. The first bottom plate 11 is formed to be slightly larger than the core material 2. As for the corner | angular part of the 1st surrounding wall part 12, the round chamfering part is formed by the round chamfering process in the inner peripheral surface and the outer peripheral surface.

  The second metal member 4 includes a second bottom plate 13 that has a rectangular shape and a second peripheral wall portion 14 that rises from the periphery of the second bottom plate 13. The second bottom plate 13 and the second peripheral wall portion 14 are formed to be slightly larger than the first bottom plate 11 and the first peripheral wall portion 12. As for the corner | angular part of the 2nd surrounding wall part 14, the round chamfering part is formed by the round chamfering process in the inner peripheral surface and the outer peripheral surface. The inner peripheral surface of the second peripheral wall portion 14 is substantially the same size as the outer peripheral surface of the first peripheral wall portion 12.

  The overlapping portion J3 is formed by overlapping the outer peripheral surface of the first peripheral wall portion 12 and the inner peripheral surface of the second peripheral wall portion 14. The core material 2 and the first metal member 3 are brazed, and the core material 2 and the second metal member 4 are also brazed. The distal end sides of the first peripheral wall portions 12 and 14 are joined at the plasticizing region W3.

  Next, the manufacturing method of the composite member which concerns on 3rd embodiment performs a preparatory process, a surface brazing process, a superposition | polymerization process, a friction stirring process, and a cutting process.

  The preparation step is a step of preparing each member as shown in FIG. In the preparation step, the core material 2, the first metal member 3B, the second metal member 4B, and the brazing sheets 5 and 6 are prepared. In the preparation step, the intermediate member N2 is formed by laminating the second metal member 4B, the brazing sheet 6, the core material 2, the brazing sheet 5, and the first metal member 3B in this order from the bottom.

  In 3rd embodiment, as shown in FIG. 20, a surface brazing process is performed, forming the superposition | polymerization part J3. The surface brazing step is a step of performing surface brazing using the pressure brazing jig L. The pressure brazing jig L is composed of a lower mold L1 and an upper mold L2. The lower mold L1 and the upper mold L2 both have a rectangular parallelepiped shape. The lower end side of the upper mold L2 has substantially the same shape as the hollow portion of the first metal member 3B. The upper mold L2 may have its side surfaces inclined outward so that the plane cross-sectional area gradually increases from the lower surface upward.

  In the surface brazing process, the upper mold L2 is lowered while the temperature and atmosphere are set to the conditions described in the first embodiment, and the core material 2 and the first metal are used by using the lower mold L1 and the upper mold L2. The first bottom plate 11 of the member 3B and the second bottom plate 13 of the second metal member are pressed with a predetermined pressure to perform surface brazing. Thereby, the outer peripheral surface of the first peripheral wall portion 12 of the first metal member 3B and the inner peripheral surface of the second peripheral wall portion 14 of the second metal member 4B are overlapped to form the overlapping portion J3, and the core The surface of the material 2 and the back surface of the first bottom plate 11 are joined, and the back surface of the core material 2 and the surface of the second bottom plate 13 are joined and integrated.

  As shown in FIG. 21, the friction stirring step is a step of performing friction stir welding over the entire circumference with respect to the overlapping portion J3 using the welding rotary tool F. A rectangular parallelepiped backing jig H is disposed inside the first metal member 3B. The lower part of the backing jig H is a rectangular parallelepiped having a shape substantially equivalent to the hollow part of the first metal member 3B. The backing jig H gradually increases in cross-sectional area as it goes upward so that the first peripheral wall portion 12 of the first metal member 3B and the second peripheral wall portion 14 of the second metal member 4B overlap with each other. You may form so that a side surface may incline outside so that it may become large.

  In the friction stirring step, the stirring pin F2 of the rotating tool F for joining is inserted almost vertically into the start position Sp set on the outer peripheral surface of the second peripheral wall portion 14 of the second metal member 4B, and along the overlapping portion J3. The joining rotary tool F is relatively moved over the entire circumference. The joining rotary tool F is preferably attached to a robot arm having a rotational drive means such as a spindle unit at the tip. Thereby, the rotation center axis | shaft of the rotation tool F for joining can be inclined easily. Moreover, in this embodiment, you may perform friction stirring, rotating a to-be-joined metal member.

  In the friction stirring step, as shown in FIG. 22, a groove P and a burr V are generated on the tip side of the first metal member 3B and the second metal member 4B with respect to the joining center line X, as in the first embodiment. The joining conditions are set so that In other words, in the present embodiment, the rotation tool for bonding F is relatively moved so as to be counterclockwise as viewed from above while rotating the rotation tool F for rotation counterclockwise at high speed. Thereby, since the front end side of the 1st metal member 3B and the 2nd metal member 4B turns into a flow side, the burr | flash V generate | occur | produces in the front end side of the 1st metal member 3B and the 2nd metal member 4B with respect to the joining centerline X. .

  The cutting step is a step of cutting the distal end sides of the first peripheral wall portion 12 of the first metal member 3B and the second peripheral wall portion 14 of the second metal member 4B. In the present embodiment, as in the first embodiment, the surplus pieces are excised together with the burrs V with the groove P as a boundary. Thereby, the composite member 1B shown in FIGS. 17 and 18 is formed.

  Effects substantially equivalent to those of the first embodiment can be obtained also by the composite member manufacturing method and the composite member 1B according to the third embodiment described above. Moreover, according to the third embodiment, the tray-like composite member 1B that opens upward can be easily formed.

  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, also in the third embodiment, an interposed member may be interposed between the first metal member 3B and the second metal member 4B. Moreover, in 3rd embodiment, you may form so that it may become another square shape, circular shape, and an ellipse instead of a planar view rectangle. In the third embodiment, friction stir welding may be performed from the inner peripheral surface of the first peripheral wall portion 12 of the first metal member 3B. In this case, it is preferable to provide a backing material on the outer periphery of the second peripheral wall portion 14 so that the first peripheral wall portion 12 and the second peripheral wall portion 14 do not tilt outward. In the friction stir process in the third embodiment, friction stir welding is performed by inserting from at least one of the inner peripheral surface of the first peripheral wall portion 12 and the outer peripheral surface of the second peripheral wall portion 14 and relatively moving the welding rotary tool F. Just do it.

  In the third embodiment described above, the superposition part J3 is formed during the surface brazing step. However, the polymerization step is separately performed between the surface brazing step and the friction stirring step using a mold or the like. It is possible to form the overlapping portion J3 by superposing the outer peripheral surface of the first peripheral wall portion 12 of the first metal member 3B and the inner peripheral surface of the second peripheral wall portion 14 of the second metal member 4B. Further, in the third embodiment described above, the core member 2 has a flat shape that is rectangular, but, like the first metal member 3B and the second metal member 4B, the bottom plate that is rectangular and the bottom plate The shape provided with the surrounding wall part which stands | starts up from a periphery may be sufficient. In this case, by setting the height of the peripheral wall portion of the core material 2 lower than the height of the first peripheral wall portion 12 of the first metal member 3B and the second peripheral wall portion 14 of the second metal member 4B, polymerization is performed. Part J3 can be formed.

DESCRIPTION OF SYMBOLS 1 Composite member 2 Core material 3 1st metal member 3B 1st metal member 4 2nd metal member 4B 2nd metal member 5 Brazing sheet 6 Brazing sheet 11 1st bottom plate 12 1st surrounding wall part 13 2nd bottom plate 14 2nd surrounding wall Part J Superposition part W Plasticization region

Claims (15)

A preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy, which are formed in a plate shape and made of a metal core material and a plate shape larger than the core material;
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and Surface brazing that is interposed between the core material and the second metal member, and brazes the core material, the first metal member, and the core material and the second metal member in a fluxless manner. Attaching process,
A polymerization step of overlapping the peripheral edge of the first metal member and the peripheral edge of the second metal member to form a polymerization portion around the core;
Friction stirrer using a rotary tool equipped with a stirring pin, inserting the stirring pin of the rotary tool from the surface of the first metal member, and relatively moving the rotary tool to frictionally stir the overlapped part over the entire circumference Including a process,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member. A preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy, which are formed in a plate shape and made of a metal core material and a plate shape larger than the core material;
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and Between the core material and the second metal member, the overlapping portion is formed around the core material by overlapping the peripheral edge portion of the first metal member and the peripheral edge portion of the second metal member. A surface brazing step of brazing the core material and the first metal member and the core material and the second metal member in a fluxless manner while forming,
Friction stirrer using a rotary tool equipped with a stirring pin, inserting the stirring pin of the rotary tool from the surface of the first metal member, and relatively moving the rotary tool to frictionally stir the overlapped part over the entire circumference Including a process,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member.   In the friction stirring step, the friction stirring is performed in a state where only the stirring pin of the rotating tool is in contact with only the first metal member or both the first metal member and the second metal member. The manufacturing method of the composite member for anodizing treatment of Claim 1 or Claim 2.   After the friction stirring step, a cutting step of cutting off the end portions of the first metal member and the second metal member with the groove of the plasticized region formed by the friction stirring step as a boundary is included. The method for producing a composite member for anodizing treatment according to any one of claims 1 to 3. A preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy, which are formed in a plate shape and made of a metal core material and a plate shape larger than the core material;
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and Surface brazing that is interposed between the core material and the second metal member, and brazes the core material, the first metal member, and the core material and the second metal member in a fluxless manner. Attaching process,
An interposed member made of aluminum or aluminum alloy is inserted between the peripheral edge of the first metal member and the peripheral edge of the second metal member, and the back surface of the first metal member and the surface of the interposed member are A superposition step for forming a superposed first superposition part and a second superposition part in which the surface of the second metal member and the back surface of the interposition member are superposed;
A friction agitation step of friction agitating the first polymerization part and the second polymerization part over the entire circumference using a rotary tool equipped with a stirring pin,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member. A preparation step of preparing a first metal member and a second metal member made of aluminum or aluminum alloy, which are formed in a plate shape and made of a metal core material and a plate shape larger than the core material;
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and An interposition member made of aluminum or an aluminum alloy is interposed between the peripheral portion of the first metal member and the peripheral portion of the second metal member by interposing between the core material and the second metal member. Inserted, a first polymerization portion in which the back surface of the first metal member and the surface of the interposed member are overlapped, and a second polymerization in which the surface of the second metal member and the back surface of the interposed member are overlapped A surface brazing step of brazing the core material and the first metal member and the core material and the second metal member in a fluxless manner,
A friction agitation step of friction agitating the first polymerization part and the second polymerization part over the entire circumference using a rotary tool equipped with a stirring pin,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member. In the friction stirring step, the rotary tool is inserted from the surface of the first metal member,
The friction stirring is performed in a state where only the stirring pin of the rotating tool is in contact with only the first metal member or both the first metal member and the interposed member. The manufacturing method of the composite member for anodizing treatment as described in 2. In the friction stirring step, the rotating tool is inserted from the back surface of the second metal member,
The friction stirring is performed in a state where only the stirring pin of the rotary tool is in contact with only the second metal member or both the second metal member and the interposed member. The manufacturing method of the composite member for anodizing treatment as described in any one of these. A metal core material having a plate shape, a first metal member made of aluminum or aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate, and more than the first metal member A preparation step of preparing a second metal member made of aluminum or aluminum alloy having a second bottom plate and a second peripheral wall portion rising from the periphery of the second bottom plate, which is formed one size larger,
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and Between the core material and the second metal member, the core material and the back surface of the first bottom plate and the core material and the surface of the second bottom plate are brazed without flux. Surface brazing process,
A polymerization step of superposing the outer peripheral surface of the first peripheral wall portion and the inner peripheral surface of the second peripheral wall portion to form a polymerization portion;
Using a rotary tool having a stirring pin, the stirring pin of the rotating tool is inserted from at least one of the inner peripheral surface of the first peripheral wall portion and the outer peripheral surface of the second peripheral wall portion, and the rotary tool is moved relative to each other. And a friction stir step for friction stir the entire polymerization portion over the entire circumference,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member. A metal core material having a plate shape, a first metal member made of aluminum or aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate, and more than the first metal member A preparation step of preparing a second metal member made of aluminum or aluminum alloy having a second bottom plate and a second peripheral wall portion rising from the periphery of the second bottom plate, which is formed one size larger,
While laminating the first metal member and the second metal member above and below the core material, a single-layer brazing sheet made of an Al-Si-Mg alloy is disposed between the core material and the first metal member and While interposing between the core material and the second metal member, the overlapping portion is formed by overlapping the outer peripheral surface of the first peripheral wall portion and the inner peripheral surface of the second peripheral wall portion. A surface brazing process in which the core material and the back surface of the first bottom plate and the core material and the surface of the second bottom plate are brazed in a fluxless manner,
Using a rotary tool having a stirring pin, the stirring pin of the rotating tool is inserted from at least one of the inner peripheral surface of the first peripheral wall portion and the outer peripheral surface of the second peripheral wall portion, and the rotary tool is moved relative to each other. And a friction stir step for friction stir the entire polymerization portion over the entire circumference,
A method for producing a composite member for anodizing treatment, wherein the strength of the core material is higher than the strength of the first metal member and the second metal member.   In the friction stirring step, only the stirring pin of the rotating tool is in contact with only one of the first metal member and the second metal member, or both the first metal member and the second metal member. The method for producing a composite member for anodizing treatment according to claim 9 or 10, wherein friction stirring is performed.   After the friction stir step, a cutting step of cutting off the end portion of the first peripheral wall portion and the end portion of the second peripheral wall portion with the groove of the plasticized region formed by the friction stir step as a boundary, The method for producing a composite member for anodizing treatment according to any one of claims 9 to 11, wherein: A metal core having a plate shape;
A first metal member and a second metal member made of aluminum or aluminum alloy, each of which has a plate shape and is formed to be larger than the core material and are respectively stacked above and below the core material;
The strength of the core is formed higher than the strength of the first metal member and the second metal member,
The core material, the first metal member, and the core material and the second metal member are joined, respectively, and the peripheral edge portion of the first metal member and the peripheral edge portion of the second metal member are all around. A composite member for anodizing treatment, characterized in that it is friction stir welded. A metal core having a plate shape;
A first metal member and a second metal member made of aluminum or aluminum alloy, each of which is formed in a plate shape and is larger than the core material and is laminated on the upper and lower sides of the core material,
Between the back surface of the first metal member and the surface of the second metal member, an interposition member made of aluminum or aluminum alloy disposed around the core material,
The strength of the core is formed higher than the strength of the first metal member and the second metal member,
The core material and the first metal member, and the core material and the second metal member are joined to each other, and the peripheral edge of the first metal member and the interposed member are frictionally stirred over the entire circumference. A composite member for anodizing treatment, characterized in that the peripheral portion of the second metal member and the interposed member are joined by friction stir welding over the entire circumference. A first metal member made of aluminum or aluminum alloy having a first bottom plate and a first peripheral wall portion rising from the periphery of the first bottom plate;
A second metal member made of aluminum or aluminum alloy having a second bottom plate and a second peripheral wall portion rising from the periphery of the second bottom plate and formed larger than the first metal member;
A metal core disposed between the back surface of the first bottom plate and the surface of the second bottom plate and having a plate shape;
The strength of the core is formed higher than the strength of the first metal member and the second metal member,
The core material and the back surface of the first bottom plate, and the core material and the surface of the second bottom plate are respectively joined, and the first peripheral wall portion and the second peripheral wall portion are frictioned over the entire periphery. A composite member for anodizing treatment, characterized by being joined by stirring.

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