TW201043370A - Welding method - Google Patents

Abstract

Provided is a friction stir welding method for welding together a pair of metal members, wherein the flatness of the metal members is improved. The welding method comprises a first welding step that conducts friction stir welding by moving a welding rotation tool from the front side (side A) of metal members along the abutting section (J1) of each metal member and a second welding step that conducts friction stir welding by moving the welding rotation tool (H) from the back side (side B) of the metal members along the abutting section (J1) after the first welding step. The welding method is characterized by the fact that the input of heat to the metal members in the second welding step is less than the input of heat to the metal members in the first welding step.

Description

201043370 W 3 ~ plasticized area on the back side. V. The right formula of this case is ^=Γ 'The chemical gas that is not the most incapable of inventing the characteristics is not clear. 6. Description of the invention: [Technical field of the invention] The present invention relates to a joint for joining metal members to each other. Person Method 0 [Prior Art] A method of joining metal members to each other is known as friction stir welding (FSW = Fricti〇n stir Welding). The friction stir welding is to rotate the rotary tool while moving along the flat portions of the metal members, and the metal members of the flat joint portion are plastically flowed by the frictional heat of the rotary tool and the metal member, so that the metal members are solid-phase joined to each other. The rotary tool generally has a stirring probe protruding from the lower end surface of the cylindrical shoulder. For example, in the patent document i, the following technique is disclosed: for the joined metal member in which the metal members are in contact with each other, the first main joining process of the friction-synthesis joining from the surface side of the joined metal structure is performed by = The second main joint of the friction material joint is in the joint joining method = the main jointing work and the second main joining work, and the conditions of the same rotation 1 卩 (4) (the pressing force of the rotating keeper, the conveying speed, etc.) are ordered. Wipe and mix. According to this joining method, the water and airtightness of the joined portion can be improved by performing the rubbing π, the day >&& *, and the 芈ϊ 搅 # 横 横 横 横 2010 2010 2010 2010 2010 2010 2010 2010 2010 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 When the friction stir welding is performed by pressing the shovel shovel tool from the surface side of the joined member, the 金属& , & ^ ^ ^ The surface of the nickname 形成 forms a plasticized area. In the first main contact, the surface side of the joined metal member is cooled by the high-speed rotation of the red-turning tool, and the surface side of the joined metal structure is retracted by heat shrinkage. . However, in the conventional pick-up method, the method is also carried out by rubbing the w τ and stirring the joint from the back side of the joined gold piece, and rubbing it with the same meal on the surface side. Stirring and joining, the same side of the moon side will also produce the same collapse with the surface side, and the joined metal member will become flat. [Patent Document] Patent Document 1: Japanese Unexamined Patent Publication No. Hei No. Hei. No. Hei. No. Hei. No. 31-666. [Invention] [The problem to be solved by the invention] The joined metal member is in contact with the pedestal on which the joined metal member is placed, and a part of the heat applied by the rotating tool is discharged from the back of the metal member of the phoenix D to the pedestal (heat release) ). However, in the second main connection, the first main jointing process causes the joined metal member to be formed between the joined metal member and the pedestal due to the shrinkage of the crucible, the 'Η' and the thinness of the joint. The shape of the gap is separated from the ~, and the friction is joined by friction. As a result, in the second main joining project, the amount of heat released will be less than that of the first main 201043370 joint project due to the reduced number of heat release paths. In the second main joining process, the heat remaining in the joined metal member in the first main joining process is increased in the joint metal member, and the key is deformed in the opposite direction. The concave-shaped jointed metal member is used for the frictional agitation interface with respect to the surface of the metal member, and the contact is made in the metal member to be joined. Metal members have problems with bending. Ο 攸 攸 观点 观点 观点 古 * 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属 金属The main technician m (10) is included in the method. The first-joint joint interface is rotated by the rotary tool along the metal metal member table. The two joints are produced from the two main joining work, producing L, ι, hand h The cable-mixing joint, and the turning tool are moved along the second y-th main jointing work|the main-spinning-spinning friction sandalwood Z' is moved from the back side of the above-mentioned metal member and is now joined by the above-mentioned metal member The heat in the main jointing process enters the above-mentioned metal crucible in the above-mentioned first main joint project, the heat of the I-genuine component is small. The τ-blade- 2 remains in the friction stir welding = heat input, heat release, if...篁 不 不 ( ( ( ( ( ( ( ( ( ( ( 主 ( 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主 主Less heat. Engineering The heat input is less than the heat in the first member. The metal remaining in the joint is wrong, and the bending of the metal member of the 5 201043370 in the second main joining process can be prevented, and the smoothness of the metal member can be improved. Preferably, the tool in the two main joining process is smaller than the first main joining::, the turning tool is smaller. In addition, in the second main connecting, the main joining is used in the first main joining process. ..., it is preferable to perform the friction (four) joining with the conveying speed of the rotating tool at a speed higher than the speed of the conveying speed. According to the joining method, the heat of the person in the first main joining project is easily set to Less. In addition to the above-mentioned second main joint work, the 主 包括 从 从 从 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 It is corrected by the correction engineering that the song cannot be renewed and the flatness of the south metal member. In the first main joining process of the mixing, the above-mentioned main joining rotary shoulder # steel preferably enters the first Main joint (4) Sexualized area and friction stir joining. According to the repetitive part of the chemical zone, due to the plastic front:: 'Plastic rubbing mixing, the airtightness of the joint part can be improved and the metal part can be re-executed again. It is preferable to carry out the above-mentioned "ten... the state of fixing to the tape... The main joining process and the second main joining work described above. According to the method of the money combination, the workability of the friction (four) joining can be improved. Preferably, the rotating tool comprises: a shoulder portion formed by:: than the upper end surface; the mixing pin protrudes from the lower center of the shoulder portion to form a tapered truncated cone shape at the front end; the outer peripheral surface of the := is engraved in a spiral shape. The ratio of the large outer diameter of the agitated pin is set to 1.33 to 2.03. 6 201043370 According to the joining method, the mixing is performed and the friction is applied to the metal: ice position. When the ratio is less than 133, the friction stirrer becomes "large" and becomes inappropriate. It is difficult to carry out the mixing and mixing into the depths of the metal components. On the other hand, when the ratio is greater than 2 〇 3 k ', the mixing pin is not easy to bend. Further, the above-described main joining rotary tool includes a shoulder portion which is nicknamed by a metal yoke which is harder than the above-mentioned metal member, and a stirring pin which is protruded from the lower end surface of the shoulder portion.

The center of the spoon is formed into a thin truncated cone shape; and the stirring wing is engraved in a spiral shape on the outer peripheral surface of the stirring lock, wherein the ratio of the maximum outer pinch of the upper (four) mixing lock to the minimum outer diameter of the stirring pin is Set to 2. GG~U7. . According to the #合方法 method, the press-in resistance of the 35-pinning press-in metal member is changed to j, and the same %' can be frictionally fed to the deep position of the metal member. : When the ratio is less than 2. 〇〇, the maximum diameter of the stirring pin is too small, and the shovel end of the stirring pin is insufficient in heat to cause a joint defect. X, the resistance at the time of pressing the metal member is too large. It is difficult to press the metal member into the stirring pin. In addition, when the ratio of square to field exceeds 2 · 6 7 , the maximum diameter of the stirring pin is too large, causing the metal/dish to cause surface defects. Further, it is difficult to press the stirring pin into the deep position. Further, the main joining rotary tool includes a shoulder portion made of a metal harder than the metal member, and a spread pin protruding from a center of the lower end surface of the shoulder portion to form a truncated cone shape having a narrow end; and a stirring blade The ratio of the outer diameter of the shoulder portion to the outer diameter of the agitating pin is set to 丨.56~2. According to this joining method, the stirring pin is more easily bent, and the burrs generated by the friction stirring 7 201043370 can be made small. When the ratio is less, the metal overflows from the shoulder to cause surface defects. On the other hand, when the ratio is larger than 2.14, the load on the friction (four) device becomes large and it is inappropriate. On the lower end surface of the shoulder, the field surrounds the periphery of the stirring pin, and a stirring protrusion body which is formed in a spiral shape in plan view is taken. According to this joining method, the stirring efficiency of the friction stir welding can be improved. Before the above-mentioned first-joint work, it is preferable to use the above-mentioned main-joining rotary tool used in the above-mentioned first-joint joint project to be small-sized t-initially connected to the "rotary guard", and for the above-mentioned flat metal The initial joining process of the friction stir welding is performed on the surface side of the member. Further, before the second main joining process, the initial joining rotation smaller than the main joining rotary tool used in the first main joining process is used. Work I, 纠 # 扪 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。

According to the method of joining the t-tK to the next m, the workability can be improved by the pre-joining of the metal member and the joining process. In the 3 main jointing process, the repair work is carried out after the start of the friction stir on the protruding material disposed on the side of the metal structure: the beam position, or the first main joint work of the upper 4, in the joint project. In the formed plasticized region, friction stir is performed at least for the adjacent portion using a b-replenishing rotary tool smaller than the above-described main joining rotary tool. Du, in the second main joining project, 'the beginning of the friction stir is set on the protruding material disposed on the side of the flat portion of the metal structure... or the end position of 201043370, in the above-mentioned first - L - _ a main joint project After that, the repairing process is performed, and at least the portion of the knife adjacent to the protruding material is smaller than the main joining rotary tool in the plasticized region formed in the second master jointer 4-Βτ+τ. Repair the rotary worker and ^ pay the cookware into the friction stir. According to this joining method, it is estimated that the plasticized region formed in the main joining process includes the joint defect, and the joint defect is repaired to improve the airtightness and watertightness of the joint. Ο

[Effects of the Invention] The joint A ^ member according to the present invention. In the method of the present invention, a metal structure having a high flatness is formed. [Embodiment] [First Embodiment] Next, an embodiment of the present invention will be described. In the present embodiment, the case where the genus is connected to the four members la and lb in a straight line is shown. First, the one-to-one member I, la, and lb, which are to be joined, are described in detail, and in detail, the month 2 is used to join the metal member Fussia, ib, and the second protrusion 3. The phantoms are produced. The poor components 1a and 1b are composed of metal materials such as a 1' Ming alloy, a copper alloy, a titanium alloy, a magnesium alloy, and a friction stir. In the component la and the other side of the metal '~+'-side metal. The metal member u, lb_form (four) is composed of the same metal material at least in the thickness of the flat portion η: inch:; inch is not particularly limited, but preferably the size is the same. Further, the metal member in which the metal member 9 201043370 is raised by the assembly 1b is referred to as a joined metal member == metal member! The surface is called the surface eight, and the back is called the back preparation.

It is called the first side C, and the other side is called the first side 1).丨J The first projecting material 2 and the second projecting material 3 are arranged such that the jointed metal member 1 is held at the center of the jointed metal member 1, and the knives are added to the joined metal member jade, and the cover is hidden. A seam (boundary line) that appears on the side of the member 1 to be joined. The material of the first large material 2 and the second protrusion 3 is not particularly limited, but in the present embodiment, it is formed of a metal material which is composed of the metal member to be joined. Further, the shape and size of the first 窣山弟大出2 and the second protruding material 3 are not particularly limited, and in the present embodiment, the thickness dimension and the thickness dimension of the joined metal member 1 in the flat portion J1. Secondly, referring to Fig. 2, for example, % nn +, _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Rotating tool (hereinafter referred to as "the main joining rotary machine is G"). The initial engagement J-joining rotary tool F shown in (a) of the eighth figure is composed of a metal material which is harder than the metal member 1 to be joined, and has a cylindrical shoulder portion F1 and a projection. The shoulder portion f 1 卞 & uses a stirring pin F2 of the lower end surface FU of the flushing F1. The size and shape of the initial engagement screwing tool ρ λ 疋褥 tool F are set corresponding to the material of the joined metal member 1 and the thick sound a; the sub-temple is set, at least in the first main joining project to be described later. The J king connection used by the &5; the turning tool G (to show the 2b figure) is also small. In this way, since the initial joining is performed with a load smaller than the main joint, the negative 10 201043370 load applied to the friction stirrer at the initial joint can be reduced, and the initial connection can be made longer than the main joining rotary machine. The moving speed (rotation speed) of the second period is a wide working time; the speed of the moving is high. Therefore, the initial end can be reduced. ^ F1 In the present yoke form, the concave shape is formed. Although the external γ of the shoulder F1 is from 丄,

The size of the at least Yu is not particularly limited, but in the present embodiment, the outer diameter γ of the shoulder G1 of the main joining rotary tool G is small. ❹...The secluded F2 hangs from the center of the lower end surface FU of the shoulder F1, and forms a truncated cone shape at the front end in the shape of the sorrow. Further, on the circumferential surface of the stirring pin F2, a feeding wing which is spirally formed is formed. The size of the outer diameter of the mixing pin is not particularly limited. However, in the present embodiment, the maximum outer diameter (upper end diameter) X2 is larger than the maximum of the stirring pin G2 of the main connecting wire σ using the suspecting tool G. The diameter (upper end diameter) Y"j, and the minimum outer diameter (lower end diameter) χ3 is smaller than the minimum outer diameter (lower end diameter) YH of the stirring pin a. Although the length La of the mixing lock F2 is preferably the flat portion reference The thickness t of the joined metal member i (see Fig. 3) is 3 to 15%', but at least preferably the length of the main joining rotary tool G2.

Lb is small. As shown in Fig. 2b, the main joining rotary tool G is made of a metal material such as a tool steel that is harder than the joined metal structure #1, and has a cylindrical shoulder G1 and a lower end surface protruding from the shoulder G1. Gn's probe G2. The lower end surface G11 of the shoulder portion G1 is the same as the initial joining rotary tool, and its stroke is concave. The agitating pin G2 hangs from the center of the lower end surface Gn of the shoulder portion G1. In the present embodiment, a truncated cone having a small distal end is formed. Further, 11 201043370 The length LB of the agitating blade formed on the circumferential surface of the pin G2 is preferably set to a flat portion; see # pin G2 thickness t of the metal member 1 & 2 or less, 3/4 or less . Hereinafter, the joining method of the joining method according to the present embodiment will be described in detail, including [n笸, 隹 令 令 % 已 已 已 已 已 已 已 已 已 已 已 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 (3) The younger joint work, (4) The second preparatory work (6)^ - + Λ (b) The first preparatory work, and the first work. Further, the first preparatory work and the first-main work: the work performed from the side of the table of the joined metal member 1;

The preparation red and the second main joint guard are from the joint B

Side implementation of the project. The first preparation of the shovel, the first preparation, the first preparation, and the preparatory work are described with reference to Fig. 1. The AI' preparation work is to set the starting position of the φ 叼 thick 搽 stirring of the joined metal member 右 of the right person. And gram

Positioning and preparing the member (the first protrusion U 裎, the y from the Z and the second protrusion 3) removes the flat members 金属μ of the metal members la, lb, the first output 2, and the second protrusion 3 The illusion, the degreasing project of the lunar new object, the splicing work ρ of the metal member 1 a, 1 b , the adjacent T1 private, and the first side of the 卞筏°卩J1 of the broken joint metal member 配置The protruding coffin configuration "the large material 2, the second protruding material 3, the protruding structure, the welding, the first protruding material 3, and the first protruding material 3,仃 Initial access to metal 槿 & 0. Welding work and fixing work to fix the spliced pigeon member 1 to the tape. In the detachment project, the surface cutting + the first * metal processing of the metal components la, The lb, the large material 2 and the second protrusion 3 & μ must be attached to the degreasing treatment liquid to remove the oil and fat components and the dirt of the processing oil 4 which are placed on the flat surface of each member. In the case of the surface η and the joined metal structure: the end member of the member 1a and the metal member 1b, respectively, the first protruding member 2 _ Flat metal member 13, "^ 罘 large output 3 surface 21, second protrusion 2: Γ 14, the first protruding material 2 abutment grease engineering as long as at least wild 31 for degreasing treatment. Although the surface of each member is flattened for processing gp T / for p adjacent to the flat surface, but in the splicing process, as shown in the figure lc, the end surface U of the lb is adhered to the metal of the _ side The end surface of the metal member la on the side of the member 5; while the surface 12 of the metal member U on one side is at the same time, the metal 槿 Du Z on the other side is A* flat. Further, the back surface 13 of the metal member lb on the back side of the metal member U is spotted. The other side faces 14 and 14 are the other side of the side of the metal member la. The side of the metal structure ... the side ", U respectively In the projecting material arrangement project, as shown in FIG. 1b, the material is disposed on the one end side of the joined metal member, and the abutting surface member 3 is disposed on the joined metal structure. At the same time as the second side of the second brother D, the second protrusion, the other end side of P J1 , the basin is joined to the first side C of the metal structure. At this time, the surface 22 of the first protrusion 2 is in contact with the surface A of the metal member 1 shown in the second protrusion d, and the surface 32 and the connection 23 and the second protrusion are first. The back of the protruding material 2 is flush. The back surface of the material 3 and the back surface of the joined metal member i are welded together, as in the first drawing and the first joining metal member, the welding is performed by

Engaging the joined metal member 1 with the inner corner portion I 13 201043370 2a formed by the first protruding member 2 (that is, the corner portion formed by the side surface Η of the metal members 1a, 1b and the side surface 24 of the first protruding member 2) A protruding material 2, welded by the joined metal members! Engaging the joined metal member i and the protruding material with the inner corner portions 3a, 3a formed by the second protruding members 3 (i.e., the corner portions formed by the side faces 14 of the metal members 1a, 1b and the side faces 34 of the second projecting members 3) 3. Further, the fusion can be continuously performed by traversing the entire length of each of the inner corner portions, and the welding can be intermittently performed. In the fixed project, as shown in Figure 3, the metal components will be joined! It is placed on the pedestal (stand) 1G of the friction stirrer, so that the fixing jig 15 such as the fixture is restricted from moving. Although the form of the fixing jig (4) is not particularly limited, it includes a fitting that abuts against the surface A of the joined metal member ..., a thread check 15b penetrating the fitting 15a, and a screw hole 供 for locking the threaded garment. In the present embodiment, although four fixing jigs 15 are used, the number is not limited. (2) The first preparatory workman's preparatory work is the work carried out before the first main monk, the main joint & the spear king, in the form of the present practice, which includes the piles including the joint and broken joint metal members 1 and The first metal sputum 1 of the spliced portion J2 of the first material 2 is connected to the sigma project, and the initial joint is the spliced portion of the 〇 metal member 1 and the entire constitutive structure / initial joining process, joint bonding Engineering... The second projecting material of the flat portion J3 of the material 3 is formed into a hole forming hole at the start position of the friction stir in the guide h of the main joint work paper guide hole. In the first preparatory work, the rotary tool F is formed continuously. As shown in Fig. 4, an initial engagement bead is moved, and the friction stir is continuously performed on the flat joints 201043370 J2, Π, and 13. That is, insert the friction stirrup cage 1. The stirring pin of the initial joining rotary tool f at the position SP is moved to the end position I without departing from the middle, and the first projecting material and the second initial joining process are continuously applied. Further, in the present embodiment, the start position Sp of the friction stir is provided on the first protrusion 2, and the end position Ep is set on the first large output 3, but the start position Sp is false L. You are not allowed to recognize the position of the ep.顺序 The order of friction (4) in the first preparation process is explained in detail with reference to Figure 4. First, as shown in the fourth drawing of FIG. 4, the initial joining rotary tool F is positioned directly above the start position Sp of the appropriate position of the first protruding material 2, and then the initial joining rotary tool F is rotated to the right. Lower and push the mixing pin to the starting position Α . 位置 Position Sp. The rotational speed of the initial joining rotary tool is the size of the stirring pin F2 corresponding to the stirring miscellaneous F 9 and ± +, and the type of the stirring pin F2 is opened, and the engaged member of the J-joining member 1 is frictionally mixed. The material and thickness are set to 'in most cases, where the next 6 is within the range of 50 〇 to 2000 (rpm) ❹. When the stirring pin F2 is in contact with the surface 22 of the first protruding squirrel dog 2, the metal of the circumference of the splicing pin F2 is plastically fluidized by the rubbing heat, and the stirring pin F2 is stirred. Into the first protrusion 2. The insertion speed (falling speed) of the red-turning tool F for the joining of the hot wire work is corresponding to the size and shape of the stirring molybdenum F?p scale sodium F2, and the material and thick sound of the member set at the starting position SP. #令予度6且疋, in most cases, set in the range of 30~60 (mm/min). The whole of the stirring pin F2 enters the first protruding large material 2' and the entire lower surface F11 of the shoulder 卩1 is in contact with the surface 2 2 of the protrusion ,1, so that the initial joining rotary tool F is rotated by 15 201043370 Relative movement is made toward the starting point s 2 of the first projecting engagement project. The moving speed (conveying speed) of the initial joining rotary tool F is set in accordance with the size and shape of the throwing pin F 2 and the material and thickness of the joined metal member 1 such as the frictional interference. In many cases, the setting is set. Within the range of 1〇〇~l〇〇〇(mm/min). The rotation speed at the time of the movement of the initial joining rotary tool f is the same as or lower than the rotation speed at the time of insertion. In addition, when the initial joining rotary tool F is moved, the axis of the shoulder portion F is slightly inclined toward the rear side in the traveling direction with respect to the lead straight line, but when it is vertical without tilting, the initial joining rotary tool F Directional conversion becomes easy and complex actions can be done. When the dummy joining rotary tool f is moved, the metal around the shrivelling pin F2 is plastically fluidized in sequence, and at the position deviated from the stirring pin F2, plasticized flow is performed and hardened again to make the initial joining rotary machine After the stirring to the first-protrusion Μ person continues the starting point s2 of the friction material joining S project, the initial joining rotation causes the 隹 starting point s2 to engage the material. Disengaged and moved to the first-protrusion in the state in which the first projecting member #+the metal member J is spliced_the friction between the first projecting member 2 and the joined metal member 1 and the first member mix. Specifically, the path to be agitated is set along the joint (boundary line) of the material 2 to move the friction pair, and the material is leveled to make the initial joint rotation aid F phase, and the initial joint rotation is advanced. : Friction mixing. Further, in the present embodiment, the starting point of the material joining process, / in the middle of the process, the friction stir to the end point e 2 from the first protrusion, . 16 201043370 In the case where the initial joining rotary tool F is rotated rightward, it is possible to cause a fine joint defect on the left side in the traveling direction of the initial joining rotary tool F. It is preferable to set the starting point of the first protruding material joining work to The position of the end point e2 is such that the joined metal member is located on the right side in the traveling direction of the initial joining rotary tool F. Therefore, since it is difficult to cause joint defects on the side of the joined metal member 1, a high-quality bonded body can be obtained. In the case where the initial joining rotary tool F is rotated to the left, it is possible that a slight contact is formed on the right side of the stapling direction of the initial engagement rotation and F; η*Huaishi & It is preferable to provide (4) - the position of the starting point and the end point of the protruding material joining process 'the left side of the breaking joining metal member i in the traveling direction of the initial joining rotary tool F. Specifically, although the 鈇, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The point is set at a position where the initial engagement is rotated. (4) When the F is the right starting point s2 A and the '# initial joining (four) turning pin is inserted into the flat joint J2, the engaged metal structure bait 1 and the first protruding material 2 are separated, but Since the joined metal member 1 and the first inner corner portion 2a are welded to each other, the metal member 1 and the first protruding member $i are opened to each other. When the initial joining is performed, the first-high-precision material is connected to the 'Μ% of the artificial 鼗, and at the end point 62, the friction material is not bundled and the material is rubbed until the first-initial joint, and the bundle is continuous. The starting point of the Capricorn project is carried out to the first initial joint project. .· ',', move according to this state

Makeup, μ, the initial joining rotary tool F I is detached from the first protruding material joint % turning tool F from the point e2 to the first initial joint 201043370 The starting point s 1 of the project is continuously smashed into the friction stir joining, and

The Si is rotated by the initial joining and F is moved to the first initial joining station without departing from the starting point. In this way, the detachment work of the initial splicing tool F at the end point e2 of the first projecting material interface mv 13 is unnecessary, and the insertion work of the initial splicing gear F at the first interface ssi is not I need I, so I can make a preparatory joint and I want to make Q work more efficient and faster. In the present embodiment, the first joint project of the first stage of the first child-child-dog-joining project, e2, Wang Le, is joined to the first-projecting material 2 to make the initial joint: spin: work and friction = mix The path is set at the end of the gray-turning tool F from the first process of the pull-up project, and the point 62 moves to the first letter of the younger brother X. The connection between the starting point and the beginning of the project is formed. First - protruding material 2. Thus, from the first projecting material: the end point e2 of the combined project to the first-first-outlet joint Φ mountain from the starting point si of the upper cutting spear hoe, it is difficult to be on the joined metal member $; To high quality joints. _ to create a joint defect 'to obtain a joint in the initial joint work' for the joined metal member i. The door is subjected to friction stir welding. + 1 seam (boundary line) on m, in the joined metal member rotation work ... 2: 'friction stir mixing path, so that the initial jointing lean tool F is moved relative to the path and continuously friction stir . The full-length portion η of the borrowing portion /1 forms the surface-side plasticized region w' in the middle of the initial stage of the joining rotary tool. In the present embodiment, the starting point is 远 远 ' 攸 攸 攸 — 初期 初期 初期 初期 初期Engineering - the initial joint project is completely m', e1. Thus, since the turkey is engaged in the first step, the turking tool F can be removed and the preliminary joining operation can be made more efficient and faster. 201043370 After the initial joining rotary tool F 刭 、 、 、 、 、 、 、 、 、 J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J From f "3, according to this state, the transition to the second projecting joint project. That is, the final %el from the first initial joint project

The starting point of the second protruding material joining project is the initial joining rotary iF

The friction stir is continuously performed without leaving the ground, and in the H sentence, the initial use rotary tool is moved to the second #Ο ❹ - dog joint project at the starting point s3. In this way, it is not necessary to perform the detachment operation of the initial joining rotary tool F at the end point of the first initial joining process, and the second joining point S3 does not require the initial joining dog 5 engineering sergeant. The insertion work of the tool F enables the preliminary joining work to be performed more efficiently and quickly. In the present embodiment, the path of the friction stir from the end point el of the first one mountain joint bonding project to the starting point s3 - sudden middle of the first dog material joining project is set on the first dog product 3, The end point of the initial joining process el (four) Η The turning tool F moves from the first-initial joining worker not U el to the second projecting point of the second protruding material 3 In the first-initial jointing, the engineering of the starting point (2) of the joining of the sacred materials is due to the joining of the metal members to the high-quality joined body. It is difficult to cause a joint defect on the second projecting material. The second projecting member 3 is frictionally agitated by the split joint metal member 1 and the pile person a s 3 . And the body and ^, the puss joint metal member 丨 and the second and now 仟 而 而 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 将 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; In the state of the present invention, in the state of the present invention, in the state of the present invention, in the state of the present invention, in the state of the present invention, in the state of the present invention, in the state of the present invention, the first joining squeezing person < From s3 to iron music, ά e3 is continuously subjected to friction stir welding. The first material = the right rotation of the initial joining rotary tool F is set, and the position of the aβ joint point s3 and the end point e3 of the large-scale joint joining project is set so that the twisted metal member 1 is placed at the beginning , .^ , Connect δ with the right side of the rotary tool F. In this way, when it is difficult to obtain a high rotation in the bonded metal of the joined metal quality, the second protrusion is set: the position of the start point and the end point of the s engineering of the initial joining rotary tool F is left-handed, The joined metal member 1 is positioned on the left side in the traveling direction of the 仞4 joining rotary tool F. Specifically, although ^^ Μ re Γ ..., the figure is not painful, the starting point is set to the 时 when the initial joining twirling tool F is rotated right; the end point is set to the right when the initial joining twirling tool F is rotated right. The starting point (2). When the stirring pin F2 (see FIG. 2a) of the initial joining turning tool F enters the flat portion J3, the force is pulled by the force of the joining of the metal member 1 and the second protruding member 3, and ώ is engaged. The pair of inner corner portions 3a of the metal member 1 and the second projecting member 3 are joined by welding, and an opening can be prevented from being formed between the joined metal member 1 and the second projecting member 3.炊 After the initial joining rotary tool F reaches the center point e 3 of the second projecting material joining project, the end point e 3 does not move away, and the friction stir is continuously performed until the second protruding material 3 is provided. J, σ fruit position EP. Further, in the present embodiment, the end is not formed on the extension line of the seam (boundary line) which is formed on the surface A side of the α-metal member 1 when it is joined. With the description, the end bit

The Ep may be the start position S \n of the friction stir in the first master A. 20 201043370 After the initial spin-drying work and the 丨, ^ ^ 4 # ^ ^ 结束 end position Ep, the initial f F is removed and the % edge is raised and the stirring pin F2 is detached from the end position EP. As shown in Fig. 5, the old joint rotation tool F inserted into the joint metal is inserted into the joined metal, and the friction heat is transmitted to the joined metal member 1 (into the crucible). By the joint certificate 4 Liren', because the broken joint metal member 1 is in surface contact with the pedestal 10, the part of the friction heat is now lacking M _ y. 1 before N is shown 'from the back side of the joined metal structure β The whole is released to the pedestal 10 side (heat release). Ο

G @ and the 'disengagement speed (rising speed) of the initial joining rotary tool F. The size, the shape, the material and the thickness of the setting end position _ part of the friction stir lock 12, etc. 30 to 60 (mm / knife) inside the fen. Further, the rotational speed of the initial engagement rotary tool α is the same as or higher than the rotational speed during the movement. Next, a via hole forming process is performed. The guide hole forms a guard, as shown in Fig. 21), which is a process of forming the pilot hole %1 in the start position % of the friction stir in the first master engagement process. In other words, the guide hole forming process is a process of forming the guide hole P1 at a predetermined insertion position of the stirring pin G2 of the main joining rotary tool G. The pilot hole P1 is provided to reduce the insertion resistance (pressing impedance) of the spoiler pin of the main joining rotary tool G. In the present embodiment, the stirring pin F2 of the initial joining rotary tool F (see FIG. 2a) is disengaged. At this time, one hole hi is formed by expanding the diameter by a drill (not shown). When the hole punching hi is used, since the formation work of the guide hole P1 can be simplified, the work time can be shortened. Although the form of the via hole P1 is not particularly limited, in the present embodiment, it has a cylindrical shape. Further, the width Z1 and the depth Z2 of the pilot hole P1 are appropriately set in accordance with the size and shape of the stirring pin G 2 . 201043370 The dog product 3 is guided and the hole is formed in the present embodiment, but the position of the guide hole P1 is not particularly limited, and may be formed on the second material 2', and may be formed on the flat portion J2 or more, but the most It is preferable that the dog is on the extension line of the joint (boundary line) of the two joined metal members 1 on the surface A side of the joined metal member 1 of the present embodiment. ,? (3) First main joining work The first main joining work is a process of actually joining the flat portion of the member 1 from the surface A side. In the first person of the present embodiment, the main joining rotary tool G shown in the figure wf2b is agitated by the joining of the joints of the (four) joints. (4) The surface side of the piece 1 is subjected to the main jointing process in the first one, such as a r-7, such as the drawing of the brothers 6a to 6c, the main connection is eight with =: Γ "2 insertion (pressing _ set Two: The mixing lock G2 moves to the end position in the middle of the mixing and unjoining process, and starts friction stir from the pilot hole P1, and continuously performs friction stirring to the end position EM1 form, although it is good in the second protrusion. β is not limited to the setting of the junction 4 and the end position E on the first protrusion 2 at the start position where the friction stir is set. The beam I is set but the start position is described in detail with reference to FIGS. 6a to 6c. First, as shown in Fig. 6a, the main joint 矣:: the hole PK start position SM1) is directly above, and the G is located at the guide, the main joint is rotated, and the G side is right. While descending 'the stirring pin g is inserted into the pilot hole P1 when the stirring pin G2 enters the pilot hole ρι ±. The guide hole is, the circumferential surface (side surface) of the search lock G2 abuts 22 201043370 on the hole wall of the guide hole ,1, from the hole wall The metal is plastically fluidized. In this state, the plastic fluidized metal is retracted on the circumferential surface of the stirring pin G2, since the stirring pin G just enters The press-in impedance at the initial stage of press-fitting can be reduced, and the shoulder G1 of the main joining rotary tool G abuts against the hole of the guide hole pl before abutting against the surface of the second projecting member 3 The wall is heated by the mold, so that the time for plastic fluidization is shortened, that is, the load of the friction applying device can be reduced, and the working time required for the main joining can be shortened. Ο Ο In the main joining rotary tool G The rotation speed (rotation speed at the time of insertion) of the main joining rotary tool G when the mixing pin (2) is inserted into the start position of the frictional release is based on the size, shape, and engagement of the metal member i by the friction pin G2. In the case of the material f and the thickness of the material, the setting is in the range of 70 to 700 (rpm). The best is the main J from the starting position: the main J is moved to the end position. The rotation speed (rotation speed at the time of movement) of the combined rotation guard G is also high. Thus, the time required for plasticizing the metal is shortened compared to the case where the rotation speed at the time of insertion is the same as the rotation speed at the time of movement. Second quickly The insertion work of the stirring pin 开始 at the start position SM1. The whole of the mixing pin enters the second protruding material 3 and the entire surface of the lower end G11 of the shoulder is in contact with the first protrusion, the side, the 隹! In the sixth embodiment, the frictional agitation is performed, and the end of the flat portion J1 of the crucible member 1 is relatively moved while the main joint is rotated, and the bridging portion J3 is protruded into the flat portion J1. At the position where the metal around the stirring pin G2 is plastically fluidized and separated from the stirring pin by the rotary working time, the plastic fluidized metal is hardened again to form a plasticized region W1 (hereinafter referred to as "surface side plasticity". Zone wi"). "The moving speed (conveying speed) of the main joining rotary tool G is set according to the size and shape of the stirring pin G2, the material and the thickness of the joined metal member to be frictionally stirred, and the like, and in many cases, Set within the range of (10) to 30 0 (mm/knife). Further, when the main joining rotary tool G moves, the axis of the shoulder G1 is slightly inclined with respect to the rear side of the lead line in the traveling direction, but if it is not inclined, the main joining rotary tool G is The direction change becomes easy, and complicated actions can be performed. When the amount of heat entering the joined metal member 1 is excessively large, i is supplied from the surface side A around the main joining rotary tool G to the portion. Further, when the cooling water enters between the flat portions of the joined metal members 1 : ' although there is enthalpy of yttrium on the joint surface, in the present embodiment, the joint metal is closed due to the implementation of the first initial joining work. In the opening between the members, it is difficult for the cooling water to enter the flat joint 4 J1 of the joined metal structure #1, so that the quality of the joint portion is not deteriorated. In the joint portion η of the joint metal member i, the frictional pair movement is set on the quilting of the joined metal structure (on the movement trajectory of the initial joint work), and the main joint is made along the path. Use the rotating guard G to make the end of the T+ joint of the person to the end of the friction stir end: after the sleeve joint - with the rotary tool "move to the other side of the joint J1仃 Friction (4) The joint edge crosses the flat portion 2, and the position of the DQ beam is relatively moved accordingly. Further, in the present embodiment, 'T field appears on the surface A side of the joined metal member 201043370 1 The joint of the seam (boundary line) on the long line of the friction setting, the position of the mouth bundle Em!, the path of the friction mixing in the first main jointing work can be opened: into a straight line. When the path becomes a straight line, the moving distance of the main connecting ί (4) can be suppressed to a minimum, and the amount of wear of the turning rotary tool G can be reduced. After the main joining rotary tool G reaches the end position ^, as in the second ❹ As shown in the figure, the main material transfer tool G is rotated while rotating. When the mixing pin G2 is referred to the first position EM1 from the end position and the mixing lock G2 is disengaged upward, the opening hole Q1 having the same shape of the same shape as the G2 is inevitably formed. However, in the present embodiment, As shown in this figure and FIG. 6C, when the high-speed rotating main joining rotary tool G is inserted into the joined metal member i, frictional heat is transmitted to the joined metal member 1 (human heat). The joining metal member is in surface contact with the pedestal 1 , and a part of the frictional heat is discharged from the back surface B of the joined metal member 1 to the side of the pedestal 1 (heat release) as indicated by an arrow N. In the embodiment, as shown in FIGS. 6b and 6c, since the main joining rotary tool G is rotated rightward to perform the left direction of the first main joining work direction, it is possible to form a follow-up (four) void defect on the metal member 1b. (hereinafter referred to as the ray-shaped cavity defect). When the friction is searched for, the left side of the direction of the twist is the shear side (the phase of the outer circumference relative to the rotation of the jointed part is the magnitude of the moving speed plus the rotation) The peripheral wiring speed of the tool is large One side) 'Metal is softened by high-temperature softening', and the burrs are easily discharged. Therefore, since the metal on the left side of the traveling direction is not formed, it is formed with the void of the road. χ 'The right side of the traveling direction, that is, the metal member la The side is the flow side (the relative speed is the side of the value of the magnitude of the connection speed from the outer circumference of the rotary tool to the rotation of the jointed part). It is difficult to discharge the burrs, and a relatively dense plasticized region is formed. Incidentally, when the main joining rotary tool G is rotated to the left, the right side of the $ direction becomes the shearing side 'may form a track on the right side of the traveling direction: = sag. On the other hand, the left side of the traveling direction is a relatively dense plasticization due to the flow side. When the groove-like void defect or the like is formed in the joined metal member 1, it is a cause of a decrease in gas and watertightness of the joined metal structure: 1. j After the end of the first mastering process, the burrs generated in the first preparatory course are removed. Further, the 'joined metal structure cow is released from the solid fixture. Fig. 7 is a first main connection of the first embodiment: as shown in Fig. 7, when the first preparatory work and the second work are performed, the heat transmitted to the joined metal structures is generated by cooling. Heat shrinkage, the surface A side of the joined metal member 会 will be deformed. (4) The second preparatory work for the second preparatory work is the work performed before the second preparatory work, and the 'joined metal member' The surface is opposite to the back surface, and the metal member i is fixed to the floor by the fixing jig 15 (see Fig. 3). As shown in Fig. 8, when the metal member is joined to the pedestal, it is The edge of the joint metal member i is bent (歪) the joined metal member 201043370. The portions U and u abut against the pedestal 10, and a gap 形成 is formed between the pedestal 1 〇 and the surface of the joined metal member. (5) Second preparatory work 〇 The second preparatory work is a work performed before the second main joining work, and in the present embodiment, it includes a joint portion that joins the joined metal member i and the first protruding member 2 The first protruding joint portion of the first protruding material joining project of the second protruding material joining unit 2 and the second protruding member 3 and the second protruding material 3 are connected to each other. The second protruding material joining process, the starting position v of the friction mixing in the first-joint joining process, is a hole forming process of the pilot hole. The second preliminary work is substantially the same as the above-described first preparatory work except for the surface and the back surface of the joined metal member 1, and thus detailed description thereof will be omitted. As shown in Fig. 8, when the initial joining rotary tool F after the high-speed rotation is inserted into the joined metal member by the second initial joining process, the frictional heat is transmitted to the joined metal member 1 (human heat). The part of the frictional heat, as indicated by the arrow N, is taken from the edge of the sigma metal member 1 and is released to the 1G (heat release) of the building. In the second initial joining process, the same initial joining rotary tool F as the first initial joining process is used, and the heat input and the surface "coffee" are smaller than the first initial joining process. 'Therefore, the amount of heat released is reduced. The back side plasticized region w2 is formed on the back surface B of the joined metal member 1 by the second initial joining process. (6) The second main joining process is the first main joint σ project from the back side β The side is actually joined to the flat joint of the joined metal element 1. The work of pj 1 is used. In the second main jointer 27 201043370 of the present embodiment, as shown in Figs. 9a to 9C, the main joining rotary tool η is used. In the case where the flat portion J1 is rubbed from the back surface of the metal member to be joined, the main tool for rotating the main joining is rubbed, and as shown in Fig. 9a, it is shouted by a metal material such as a tool steel that is harder than the metal member to be joined. The columnar month P 11 and the dog's probe H2 that attacks the lower end face Η 11 of the shoulder Η 1. The main joining rotary tool η has a rougher relationship with the main joining rotary tool G used in the first main joining process. phase The shape is approximately 8 G% of the main rotary tool G. However, the main joining rotary tool H used in the second main joining process is the same as the main joining rotary tool. The size is preferably set to be smaller than the main joining rotary tool G. The main joining rotary tool is considered to be the size of the main interface turning tool G used in the first main joining process and the metal to be joined. The size of the bending of the member 1 is appropriately set, etc. In the first main joining process, the stirring pin of the main joining rotary tool is inserted (C) into the guide hole ρ2 of the second protruding member 3 (starting position 2). The inserted mixing steel 12 胄 is moved to the end position & provided at the first protruding material 2 without detaching. That is, in the second main joining process, the friction mixing is started from the guide hole Ρ 2, and continuously The second main joining process will be described in more detail in the end of the frictional shifting to the end position Εϋ2, and 9a to 9c. One hundred first, as shown in Fig. 9a, the main joining rotary tool H is located directly above the guide hole 2. 'Next, the main joint rotates right η with the rotary tool η Lowering, and inserting the stirring pin 2 into the guide hole ρ2. 28 201043370 Who is the stirring pin 2? 2. Enter the second protruding material 3 and the entire surface of the lower end H11 of the shoulder H1 is in contact with the first _ * After the surface of the material 3 is produced, as in the case of the ninth step, the main joint rotation is fixed toward the end of the flat portion J1 of the joined metal member 1 by the opposite side of the joint. Restriction, such as the actual shape of the '·,, 乂, it is best to set the pin steel 2 contact surface side plasticized area W1 of the dry steel contact with the table W1 ^ V and this is wrong, due to the surface side plasticized area W1 Then, the end side is again subjected to n τ and agitation, and the defect can be repaired in the case where the joint defect ^ ^ _ T1 is formed on the side of the surface-side plasticized region W1 Ο 。. Further, the whole of the deep π ^ D of the flat joint portion J1 is friction stir, and the joint knife, water male and airtightness can be improved. When the H0 ^ field main s is moved with the red turning tool Ιί, the current phoenix m H2 ^ 周围 around the mixing pin 2 is separated from the position of the stirring steel at the same time.卩M The plastically fluidized metal is hardened again to form a plastic f biochemical region W 3 (hereinafter, the "Northern surface side plasticized region W3" is avoided). Further, as shown in Fig. 9, ^ ^ /, in the first main joining process, since the main joining rotary tool is turned right and right, from the first side face C of the joined metal member 1 toward the second side D — On the side of the metal member lb, the right side of the direction is set to 'the main'. A relatively dense plasticized zone is formed. Therefore, the surface-side plasticized region W1 (four) formed by the second step: the buckle can be reliably sealed. As shown in Figure 9c,

Em2 ', after the main joining rotary tool Ιί reaches the end position L+M2, 'the main opening Η2 is rotated from the & °疋 turning tool while the stirring pin Η2攸 end position Εμ2 is released and the rotation is released. ... Figure). It is preferable that the main joining rotary tool is the same as the case of the above-mentioned first main joining work of Jiang #, and the speed is higher than the rotating speed at the time of moving. 29 201043370 Moreover, when the pull-out hole qi remaining in the first-joint work is overlapped with the movement path of the main-joining rotary tool 第 in the first project, the flow of the plasticized flowing metal is green, and there is a defect in the joint defect. At the same time as the end position of the friction stir batching of the second main joint project is set from the old position of the pull hole Q, the friction stir line of the second main joint project is set to avoid the pull hole qi, so that the main The stirring pin H2 that engages (four) turns q H moves along the path. As shown in Figures 9b and 9c, the main joining rotary tool that rotates at a high speed is inserted into the joined metal member! Riji, friction heat transfer to the joined metal components! Inside (into the heat). Further, a part of the frictional heat is indicated by an arrow: the edge portions U, U of the joined metal member i are discharged to the pedestal 1 〇 (heat release in the second main joining process, due to the formation of the gap P, with the first main In the second main joining process, the amount of heat released from the first main joining process is reduced, but the main joining is smaller than that of the main joining rotary tool G. With the rotary tool H, the amount of heat input is reduced as compared with the first main joining process. After the second main joining process is finished, the protruding material is cut off. Further, after the end of each project, it is preferable to remove the formed metal member 1 According to the first embodiment described above, as shown in Fig. 10, after the jointing work, the metal member 1 to be joined is released from the fixed jig 15 (see Fig. 3), The back surface b side of the joining metal member i also undergoes heat shrinkage, and the bending formed by the first main joining process is corrected to make the joined metal member 1 flat. 30 201043370 As described above, by creating the gap P Second primary joint The amount of heat generated in the process is reduced, and the main joining rotary tool used in the second main joining process is set to be smaller than the main joining rotary tool G used in the first main joining process, and the amount of heat input is reduced. The heat remaining in the joined metal member 可 in the first main joining process and the second main joining process can be balanced. 残 The residual heat of the surface A#1 of the joined metal structure is expressed as (in the first preparatory work) The heat input + the heat input in the first main joining project - (the heat release in the first preparatory work + the heat release in the first main joining project). The residual heat in the 'back' of the other aspect is expressed as ( The heat input in the second preparatory work + the heat input in the second main joining project) _ (the heat release amount in the second preparatory work + the heat release amount in the second main joining work in the present embodiment, by changing The size of the rotating tool in the first main joining process and the second main joining is such that the residual heat of the first main joining work and the second main joint is balanced, and the joined metal member 丨 can be flattened/into Bonded metal structure The heat input of the member 1 is changed by changing the size of the joining rotary tool G and the 丨 丨 丨 , , , , , , , , , , , , 入 入 入 入 入 入 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟The rotating front and the front end of the cymbal are pushed into the big flute, and the area W1 is the plasticized surface of the surface formed by the main joint project. The plasticized area on the side of the stirring surface can be repaired again. In this embodiment, in the present embodiment, the metal crucible is joined to the initial joint during the main joining process. A, lb can be rubbed without being separated from each other. In the case of the surface of the interface metal member i and the back side, the heat is not limited thereto. For example, when the same rotary work is used on the surface and the back surface of the joined metal member 1, and the PJ main. /, inch, the moving speed of the rotary tool by the #面β side is faster than the moving speed of the rotary tool on the surface side. The heat input of the rotary tool on the back side of the back side is small, and the length of the track of the movement of the slave transfer tool (the sum of the lengths of the friction stir track) is the back side of the joined metal member 1. The side has a smaller amount of heat input than the surface a side, the north 1 n , and the moon side B side. Correct

!:: Connection: The friction of the project is set in consideration of the thickness of the first-to-primary jointer, heat release, and clearance P. The size of the FiP is even joined to the metal components! After the first main joining process and the second master joining metal member are left behind, the surface A of the surface 1 or the back surface β, 隹, Τ攸 is joined to the metal member X. For the correcting rotary work (in the field work button, use one (not shown), and in the jointed gold eyebrows, or the back side β, the surface of the shape of the bull 1 is convexly convex. The tool is formed and mixed with the main joint. The corrective rotation is used in the same shape, and the same shape is used, and the movement is performed more than the main connection and the 执 - ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( In the case of the portion where the bending is large, the knives are focused on. The second embodiment is followed by the following description: [1] The first embodiment of the present invention includes (1) the first-pre-dise, the lean mode. Joint project, (4) Wang, (2) first pre-injury project, (3) first main injury project, (5) second preparatory project, (4) second 32 201043370 main joint project, (7) second repair project, (8) The first repairing project, from (i) the first preparatory work to the (6) second main joining work, is the same as that of the first embodiment, and therefore detailed description is omitted. (7) Second repairing work (6) Second main joining After the completion of the project, the second repair project is carried out according to this state. The second repair project is The joint defect of the back side plasticized region W3 which may be included in the back surface B of the joined metal member 1 is compensated. Ο In the second repairing work of the "Opening" state, for example, 丨丨a and 11b In the lunar surface plasticized region 3, friction stir is performed at least for the first repair region first L complementary region R2 and the third repair region. - The purpose of the friction stir for the first repair region R1 is to perform the above-mentioned first main connection σ project At the time of the break, the travel along the main joining rotary tool H is turned off to the possible formation of the follow-type defect. The main joining rotary tool is turned to %' in the left side of the traveling direction, which may cause a defect in the fuel line. In the case of the left rotation, a follower type defect may occur on the right side of the traveling direction. Therefore, in the present embodiment in which the interface is rotated by the right turn of the interface, the first repaired area R1 is set, and the bean 5, 丨, 6 people τ ^ ^ The upper side of the surface side plasticized region W1 located on the left side in the traveling direction is viewed in the plane of the 匕 匕 3 : The purpose of the friction stir in the second repairing region R2 is at the second r: work: Rotating tool "yellow cut flat Department] 2 i fangs, the 虱 film formed in the plasticized area on the back side was disconnected. The end position EM2 of the Moshan Mountain well in the joint project of this form was set in the dog. 2, in the case where the main joining is rotated by the right rotation of the tool H, the possibility that the yttrium oxide is wound into the right side of the moon-side plasticized region W3 of the traveling direction is higher, and the left side is rotated. In the case of the rotation, the possibility that the ruthenium oxide is caught in the upper portion of the back side plasticized region W3 on the left side in the traveling direction is changed. Therefore, in the present embodiment in which the main joining rotary tool is rotated to the right, the first projection is adjacent to the first projection. In the plasticized region W3 on the back side of the material 2, the second repaired region K2' is set so as to include at least the upper portion of the surface-side plasticized region (4) on the right side in the traveling direction. Further, the distance d5 from the seam of the joined metal member 1 and the first projecting member 2 to the edge of the second repairing region R2 on the side of the joined metal member 1 is preferably the largest than the stirring pin H2 of the main joining rotary tool h. The outer diameter is also large. The purpose of the friction stir of the third repairing region R3 is to break the oxide film wound in the plasticized region W3 on the back side while the main joining is passed through the flat portion J3. When the start position % of the friction stir in the main jointing work of the present embodiment is set to the second protrusion #3, when the main joining rotary tool is rotated ugly right, the oxide film is wound into the back side of the left side in the direction of travel. The possibility of the upper portion of the plasticized zone $W3 is changed, and in the case of the left rotation, the possibility that the oxide film is wound into the upper side in the traveling direction: the upper portion of the plasticized surface becomes high, and therefore, the main connecting tool is In the present embodiment, the right side of the second protrusion 3 is plasticized in the back side of the second protrusion 3, and the third repaired area is set to include at least the surface side plasticity on the left side in the traveling direction: the upper portion of the field W3 . Further, it is preferable that the side distance d4 from the joint of the joined metal member and the second projecting member 3 to the side of the joined metal member 1 on the third side of the field R3 is better than that of the main joining rotary tool The maximum outer diameter of the stirring pin 12 is also large. 34 201043370 The second repairer in this embodiment, Qu Tian 4 + from the person mad t as shown in the brother lib diagram, the use of the main connection. The rotary tool β also uses a rotary tool E for thick rubbing. In this way, it is possible to prevent the plastic soil from expanding to more than necessary. The repairing rotary tool is the same as the main joint 8a, ^ is the same as the square twisting tool ,, and the tool steel is also joined by the metal 谌, „ ® metal member 1 is also made of a hard metal material, and the right is cylindrical The shoulders of the shoulders, the ridges, the ridges, the sighs, the sighs of the lower end of the shoulders of the shoulders of the EU, the E2. The 搅拌 搅拌 the stirring pin E2 is from the shoulder E, The lower surface of ^ ~ , hangs down. In this embodiment, a small circle a „ π . ^ ^ ^ ° is formed at the end of the crucible, and a spiral is formed on the circumferential surface of the stirring pin £2. The person m repairing material turning tool W is smaller than the main connecting 5 rhyme turning tool, and is larger than the initial joining rotary tool F. In the 帛L-complementing project, after each bundle of a repaired area, the repairing field is not made, and the tool is removed. For each patching area, the patch is used for different repairing conditions. 1〇_% of the converter E, but in this embodiment, as in the first

In Fig. 12, the repairing field A 疋 疋 tool E forms a continuous movement track (bead) and moves, for the first station r_ 1, , the multi-complement area R1, the second repair area R2, the repair area R3, * Body ^ Long system two... Continued friction mixing. In other words, in the first embodiment of the present embodiment, the (fourth) lock E2 (see the mth figure) for the repair rotation of the start position SR of the friction stir is inserted without departing from the end position ER. B, m芏, in the present embodiment, the start position Sr of the friction stir is set at the same time as the first shot dog 2, and the end position Er is set to the material 3, according to the _攸$广罘-大For example, the case where the repairing area R2, the first repairing area, and the nig of the repairing area R3 are subjected to friction stirring, the position of the starting position rSr and the ending position F& the position of "° 1 b and the order of friction stirring" 35 201043370 The sequence of friction stir in the repairing project is described in more detail with reference to Figure 2. Figure 1. Insert the pin (2) of the mixing pin E2 of the repairing rotary tool E. At the start position Sk of the position of the 屮, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The size and shape of the pin E2, the material to be joined and the thickness of the metal member to be joined by friction stir, etc. are set, and in many cases, it is set in the dry circumference of 1 〇〇 (_/knife). Rotational speed of tool E when moving and rotation when inserted The degree is the same or lower than this speed. When the (4) two repaired area R2 is subjected to friction mixing, even if the vaporized film between the δ metal member 1 and the first kiL output 2 is wound into the back side In the plasticized region W3, since the oxide film is broken, it is difficult to cause a joint defect even if it is adjacent to the plasticized region on the back side of the first discharge member 2. = and: When the region R2 becomes larger than the region where the frictional tool E is repaired by the repairing rotary tool E, the friction stir tool is staggered and the repairing tool can be used for any U-turn. After the end of the friction stir of the second repairing region R2, the repairing tool E is moved to the first-repairing region in the state where the repairing tool E is not disengaged. In this way, the lamp is continuously fed along the first-main connection A, and the friction stir-up path in the first jointing process is continuously placed on the light-deficient material, and the heart can engage the defect. Also disconnected 'difficult to occur after the end of the friction stir of the first repairing area R1, so that the repairing tool 36 201043370 rotating tool Ε does not detach and moves according to this state: the third repair... performs the friction mixing... ^ namely: = 4 genus The member 1 and the second protrusion are better than the second 屮 金 金 Β Β Β Β Β Β Β Β Β 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化 氧化: In the plasticized region W3 on the back side, it is also difficult to produce a joint defect. ^ In the case where the repaired material is in the area where the rubber is mixed, the friction repairing tool is staggered at the same time. It is possible to make a U-turn of any number of times by the rotation of the rotating guard. After the friction stir of the first repairing region R3 is completed, the repairing rotary tool E is moved to the end position Er, and the repairing rotary tool ε is rotated and raised. The stirring pin E2 is detached from the end position ER. The back side plasticized region W4 is formed on the back surface B of the joined metal member 1 by the second repairing work. 'In the second repairing project, as shown in the lib diagram, Table of pedestal 1 〇 and joined metal structure # i Face A contact, by repairing the heat generated by the rotary tool E - part of the heat released from the surface A to the pedestal 1G (exothermic). As shown in Figure 13, in the Chu - Pi, the first repair in the After the completion of the work, the joined member-member 1 is released from the fixed jig i 5 (see the i-second view), and then heat-shrinked to form a concave shape on the back side B side of the joined metal members. After the second repairing project, the surface and the back surface of the joined metal member 1 are reversed, and the first repairing work is performed on the surface A. The first patching body is as shown in Fig. 14, which may be included in The work of repairing the joint defect of the surface side plasticized region W1 of the surface A of the joined metal member i. 37 201043370 In the first repair work, as shown in Fig. 14, the surface side plasticized zone factory is at least the first repair Zone (4), second repair zone R2 and second "rhodium zone R3" are friction stir. The first repaired area ruler 2 (4) domain and the (4)th complement area R3 are the same as the second patch: the procedure is the same, so the description of the details is omitted. In the repair work, as shown in Figures 14 and 15, use = use, transfer... it is smaller than the migration transfer tool E used in the second repair project' and is faster than the initial joint rotary tool F is still big. = The %-turn tool E is composed of a metal material such as a sturdy steel that is joined to the joined metal member, and has a cylindrical shoulder portion E1 and a stirring pin protruding from the lower end surface E11 of the shoulder portion E1 ( Pr〇be) E2,. In the first repair work, as shown in Fig. 14 and Fig. 15, the repair: the start of the appropriate position of the first protrusion = 2 with the rotary tool £'s pinning pin £2' insertion (factory firm) ...and the friction stir is started, and the second repairing region R2 is subjected to friction stirring. In the first repairing process, the same as the second repairing ’, the friction stir of the first repaired region R1 and the third repaired region. In the first repairing work, as shown in Fig. 15, when the high-speed rotating repairing tool E# is engaged with the metal member 1, the frictional heat is transmitted and joined to the metal member! Inside (people hot). Further, the part of the frictional heat, ''k not' is from the edge of the joined metal member ^, the seat 1 〇 (heat release).杈 In the first-repair project, since the gap P is formed, the path to the second repair work is smaller than that of the heat release. Therefore, in the first repairing project, 38 201043370 has less heat release than the second repairing project, but since the repairing rotation is smaller than the repairing rotary tool, the heat is changed compared with the second repairing project. less. After the end of the first repair project, the protruding material is cut. Further, it is preferable to remove the burrs formed on the joined metal member 丨 after the completion of each project.

According to the second embodiment described above, after the first repairing work, the metal member is joined! From the fixed jig 15 (see Fig. 14), the bending of the holding metal G in the second repairing process by the heat shrinkage is released, and the joined metal member 1 is flattened. As described above, by generating the gap p, the amount of heat release is reduced, and the repairing rotary jade E, 5 used in the first repairing process is set smaller than the repairing rotary tool E used in the second repairing process. The amount of heat input is reduced, and in the second repairing process and the first repairing process, the amount of heat remaining in the joined metal member 1 can be balanced. Thereby, the surface side plasticized region is repaired to the back side plasticized region W 3 human & _ chopped 3 defect, and the bending which may occur in the repairing process can be corrected. Further, the trajectory of the rotary tool for repairing the work is not limited to the above-described form. For example, although not specifically illustrated, the traverse flat portion causes the rotary tool to move in a zigzag manner for repair. [Modification] In the modification, it is progressing. At the time of the first-joint-joining project and the second main joining process, the rotary tool can be used for the main joining rotary machine shown in Figure 16. Moreover, the 'deformation' is in addition to 傕; using the main joining rotary tool K,

/ The first embodiment is the same, and the description of the overlapping portion is omitted for the tongue and e A J . 39 201043370 The main joining used in the modification will be described.筮1 r smell main - the structure of the converter 月 The 16th chart of the month does not rotate the tool variant, Γ (b) is the bottom view. In the side cross-sectional view, the ratio is... as shown in the figure (10), the tool steel 4 is harder than the broken metal member, and the gold-column shoulder portion is protruded from the shoulder portion κ 'with a circle (Pr 〇be) K2, the stirring rib K3 of the stirring pin stirring head (4) of the lower end face K11, and the stirring blade K4 engraved on the circumferential surface of the search pin K2. The stirring pin K2 is suspended from the lower end surface Ku of the shoulder K1. The two-stage two form a truncated cone having a small front end. Further, in the circumference "" of the mixing pin K2, the effect of the (four) mixing effect is formed, and the length u formed in the spiral shape (four) can correspond to the maximum outer diameter Υ3 of the step pin K2 and the outer diameter Y1 of the shoulder Κ1. Set it appropriately. * The mixing body large body K3 is protruded from the lower end surface KU of the shoulder portion K1 which is flat. The agitating rib K3, as shown in Fig. 16b, forms a spiral shape on the lower end surface KU around the periphery of the transfer pin. By the metal having the agitating body K3 flowing due to plastic fluidization flowing on the side of the mixing pin, the efficiency of friction stir can be improved. Further, the length of the stirring ridge body and the number of windings can be appropriately set. In the main joining rotary tool κ in the modified example, the mixing burr body 3 is provided on the lower end surface, and the plastic fluidized metal is collected in the central portion of the stirring pin U to perform frictional scramble. Thereby, the efficiency of friction stir mixing can be improved, and the occurrence of joint defects can be suppressed. Further, the main joining rotary tool has a thick end portion due to the formation of the bottom end portion of the stirring pin 2, and prevents the stirring pin 40 201043370 K2 from being bent, and the pressure of the pressure pin when the stirring pin K2 is pressed into the metal member becomes small. . Further, since the agitating blade 4' is engraved on the outer peripheral surface of the agitating pin 2, the friction stir mixing can be performed more efficiently. [Embodiment] [Embodiment 1] - Next, an embodiment of the present invention will be described. In the embodiment of the present invention, as shown in Figs. 17a and 17b, the square-shaped metal member in the plan view, the surface Za& and the back surface Zb, respectively, are drawn by three circles, and the bending is performed on the surface Za side. The amount of deformation and the amount of deformation of the bend generated on the sides of the back. The closer the value of the amount of deformation generated on the side of the surface Za to the value of the amount of deformation generated on the back side, the higher the flatness of the metal member _. The metal member 200 is a cube of 5 mm x 5 mm in a plan view, and is measured by using two members having a thickness of 3 mm and 60 mm. Metal member The material of 2〇〇 is a 5052 aluminum alloy of the jis specification. The three circular lines of the frictional mixing trajectory are set at the center of the metal member 2, the point j or the point j is centered on the _ 仏 仏 and the back side Zb together, 3 is further reduced to + diameter rl = 1 〇〇 mm (below It is called the middle circle) U〇_ (the following material is large == 15G with (hereinafter referred to as small circle, medium circle, large circle). The order of friction stirring depends on the rotary tool to rotate the tool on the surface Za side. The size of the rotary tool Use the length of the pin of the same size (four): the size of the front end of the pin (the minimum illusion is 6 (large diameter) is 9_, 6 mm. The number of rotations of the rotary tool is 41 201043370 600r pm, the conveying speed is set to 300 On the surface Za side and the back side Zb side, the amount of pressing of the rotary tool is set to be constant. As shown in Fig. 7, the plasticized region formed on the surface side Za becomes plastic from a small circle to a large circle. The plasticized region W21 to the plasticized region W23 is formed into a plasticized region Wg 1 to a plasticized region W33 from a small circle to a large circle. The measurement results in this embodiment are shown in Table j~ Table 4 shows.

In Table 1, the thickness of the metal member 200 is 30 mm, and the measured value at the time of friction stirring from the surface Za side is shown. "Fsw front" means that before the friction and mixing, the center and the location of the K reference (10) at each location (location a to location h) - after the difference FSW" are not based on j, and three rounds of agitation are performed. After the 'base|j and the height difference between the locations. "Surface side deformation 篁" is the value at each point (before FSW - before FSW). "Surface side deformation amount": The lower column indicates the average value of the place a to the place (4). The negative values of "(4) before" and MW <" indicate that they are located below the reference j.

42 Ο Ο 201043370, which indicates that the thickness of the metal member _ is dynamic. After the friction stir from the present: Μ仃 small circle, medium circle, and large circle, for the curved gold, the face side is also small circle, medium κ, large round = measured value of each position of the metal member at the time of sanding. "Before" = the difference between the center position Γ (reference Γ) and each of the places (a~h') before the friction stir. "(4)", referring to Fig. 17, which indicates that the reference factory is 0, and = "(, after the radius (1), the reference J, and the height of each position, the back side deformation amount i" is indicated at each location ( The value of FSW1 -F before), the lowermost column of the back side deformation amount lj indicates the average value of position a, ~ position h. 卞 "FSW2" indicates that the reference factory is 〇, except for the small circle (radius rl) Further, after the friction stir of the middle circle (radius r2), the reference j is different from the height of each position. The "back side deformation amount 2" indicates the value at each point (10) 2 - before FSW), and the "back side deformation amount" The lowest position of 2" indicates the average value of position a, ~ position h'. "Jane" means that the benchmark is used as the 〇, except for the small circle (half the (1) disk circle (radius Γ 2), and the larger circle (the radius (3) of the bar after the shape of the reference Γ and the position of each position The "back side deformation amount 3" indicates the average value of the position "the back side deformation amount 3" at each position (before FSW3 - FSW) and the lowest position of the position a' to the position h." 43 201043370 Table 2 Plate thickness 30, back (corrected FSW)

(mm) Deformation amount 3 and Table 3 shows the metal member 20. The thickness of the plate is 6 〇 _, and the items of the measurement m 3 from the surface side > the circle, the middle circle, and the large circle (4) have substantially the same meanings. Table 3 Surface thickness 60mm surface

丨AV=0,98二^“The thickness of the metal member 2〇〇 is 6〇, and the measured value at the back side of the crucible is friction-stirred after the friction is increased from the surface side. Each item of the disk 矣 ^ /, Table 2 has the same meaning. 201043370 Table 4 FSW front FSW1 Back side deformation amount 1 Back side deformation amount 2 (mm) FSW3 Back side deformation amount 3

Thickness 6〇mi|i 'Back (corrected FSW) Ο Ο The average value of the "surface side deformation amount" in Table 1 (丨.61) and the average value of the "back side deformation amount 1" in Table 2 (2·04) In comparison, the value of "back side deformation amount 丄" is large. Similarly, the average value of the "back side deformation amount 2" and the "back surface side deformation amount 3" average value (3.53) are larger than the "surface side (four) amount" average value U. 61). In other words, when the thickness of the metal member is (4), the bending of the metal member 200 can be corrected even if the small-circle friction stir is performed from the back side. Therefore, when the metal member 2 is 3 〇 _, the amount of heat input on the back side is made smaller than that on the surface side by using a small rotary tool, and the flatness of the metal member 2000 can be improved. When the average value of the "surface side deformation amount" in Table 3 (〇. 98) is compared with the average value (〇.91) of the "back surface side deformation amount 2" in Table 4, the deformation amounts of the two are similar. Therefore, when the thickness of the metal member 200 is 6 〇 叮攸 and the back side of the back side is subjected to friction stir of the small circle and the middle circle, it is confirmed that the flatness of the door member 1 can be improved. That is, when the thickness is 60 min, the amount of heat input on the back side is made smaller than that of the surface side by using a small rotary tool, and the flatness of the metal member 2 (10) can be improved. [Example 2]

The conditions (sizes) of the respective elements of the main joining rotary tool κ in the above-described modification are shown in Table 5. Table 5 shows the lengths of the pin (stirring pin), the maximum value of the pin, the minimum diameter of the pin, and the size of the shoulder diameter and the respective dimensions of the tool 丨 to the tool IV having the same structure as the main joining rotary tool κ. Proportion and speed and joint speed. The state of each tool in each tool I to tool Iv subjected to frictional engagement with each of the tools I to IV' of the tool described in Table 5 was observed. Table 5, the minimum diameter of the shoulder Y3 (mm)

Length of the pin Li (mm) jgi ¥ YKiiiin) Most; Number of revolutions (rpm) Engagement speed (mm/min) The length of the pin/the maximum diameter of the pin exceeds 2. 03, the miscellaneous, I will be damaged. On the other hand, when the length of the pin/the maximum diameter of the pin is less than ^3 ^, the position of the friction stirrer device becomes large, resulting in an inappropriate position of the same. , '.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The diameter/pin minimum diameter is less than 2 · 〇〇, 吉, _ 甶 销 最大 的 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大 最大When the maximum diameter of the pin stops the surface defect, it is appropriate. On the other hand, at the time, when the minimum diameter of the metal escape/lock from the shoulder exceeds 2.6, the load on the anti-friction stirrer becomes large and the shoulder is not generated. The value of the diameter/pin maximum diameter is less than 5656 and surface defects are generated. [Brief Description] FIG. 1 is a view for explaining the arrangement of the metal member, the first projecting member, and the second projecting member of the first embodiment. (a) is a perspective view, (b) is a cross-sectional view of the ( line in which (c) is (b), and (d) is a Η-! view of (8). The side view of the initial joining rotary tool, the rib θ ' ", a side view of the main joining rotary tool. Fig. 5 is a plan view showing the first initial joining process of the first embodiment. Fig. 5 is a cross-sectional view showing the first initial joining process of the first embodiment. Fig. 6 is a view showing the first main joining process of the first embodiment, the starting position, (b) showing the intermediate position, and (c) showing the ending position. Fig. 7 is the first main joining process of the first embodiment. Fig. 8 is a cross-sectional view of a second initial joining process of the first embodiment. 201043370 Fig. 9 is a view showing a second main joining process of the first embodiment, (a) starting position at the bottom of the head (') The middle position is shown, and (C) is the end position. Fig. 10 is a cross-sectional view showing the end of the first embodiment. Fig. 11 is a view for explaining the second repairing work of the second embodiment, wherein (a) is a plan view, ( Fig. 12 is a plan view showing a second repairing work of the second embodiment. Fig. 13 is a cross-sectional view showing a second repairing work of the second embodiment. Fig. 14 is a view showing the first embodiment of the second embodiment. Repair work Fig. 1 is a cross-sectional view showing a first repairing work of the second embodiment. Figs. 1 and 1 to 6 are diagrams showing a modification of the rotary tool, and C a) is a side view (b). Bottom view. Fig. 17 is a view for explaining an embodiment, (a) is a perspective view, (1}) is rSF1 λ ' [Description of main component symbols] 1 to a bonding metal member; la to a metal member; lb to a metal member; a protruding material; 3~ second protruding material; J2, J3~ flat joint; A~surface; 201043370 Β~ back; C~ first side, D~ second side, F initial joint with rotating tool F1'~ Shoulder; F2' ~ mixing pin; » G~ main joining rotary tool; GL · ~ shoulder; G2' ~ mixing pin; 1 Η ~ main joining rotary tool; HL · ~ shoulder; Η 2' ~ mixing pin ; t Η 1] ί ~ lower end 1 Ε ~ repair with rotary tool > E1 ~ shoulder; Q E2 ~ mixing pin;

Sin, Sm2~ start position; Ε Μ 1, E Μ 2~ end position; Ρ ~ gap; Q1 ~ pull hole; U ~ edge portion; W1, W 2 ~ plasticized area. 49

Claims (1)

201043370 VII. Scope of application: 1. A method of joining, including: 1 接°工裎' to make the main joint with a rotating tool, and the eight joints of each other, from above. The metal member is joined by the joint; and the surface of the 1## (4) is moved to perform the frictional main sigma process 在' in the first main joint-use rotary tool along the upper/backward, so that the main connection is similar to the thousand joints, From the north movement of the above-mentioned metal member, the side of the face of the abbreviated cow is not re-mixed, and the armor of the above-mentioned second main venerable person enters the heat of the anti-metal member in the whole genus The setting is set to be less than the amount of heat entering the metal member in the above-described first pass. The joining method described in the item i of the patent scope, the main joining rotary guard used in the first main joining process is more than the main used in the first main joining project. The joining rotary tool is small. 3. The joining method according to claim 1, wherein in the upper: second main joining process, the conveying speed is faster than the conveying speed of the main joining rotary tool in the first main joining process. The speed is rubbed and joined. 4. The joining method according to claim 1, wherein after the second main joining process, a correcting work is further included, and friction stirring is performed from the surface side or the back side of the metal member. 5. The joining method according to claim 1, wherein in the second main joining process, the stirring pin of the main joining rotary tool enters a plasticized region formed in the first main joining process, And friction stir welding. The method of claim 1, wherein the metal member is fixed to the tape by the fixing jig, and the first main joining process and the second main joining are performed as described above. engineering. 7. The joining method according to claim 1, wherein the 乂 main joining rotary tool comprises: 〃 the shoulder portion, which is made of a metal harder than the metal member; forming a front end 搅 smashing the pin, protruding in the center of the lower end surface of the shoulder, a thin truncated cone shape; and the feeding wing, the outer peripheral surface of the stirring pin is engraved in a spiral shape, wherein the length of the stirring pin is relative to the upper The ratio of the maximum outer diameter of the money (4) is set to 1. 33~2. 03. The joining method according to the above aspect of the invention, wherein the main joining rotary tool comprises: a shoulder portion made of a metal harder than the metal member; forming a front end stirring pin protruding from the shoulder The center of the lower end surface of the portion is in the shape of a thin truncated cone; and the agitating blade is set to a maximum of 2. 〇〇~ The outer peripheral surface of the mixing pin is spiraled, wherein the large outer diameter is relative to The ratio of the minimum outer diameter of the stirring pin is 2.67. The joining method according to claim 1, wherein the main joining rotary tool comprises: a shoulder portion formed of a metal harder than the metal member; and a stirring pin protruding from a center of the lower end surface of the shoulder portion, Forming a tapered truncated cone shape; and 51 201043370 agitating blades, the outer peripheral surface of the agitating pin is engraved in a spiral shape, wherein the ratio of the outer diameter of the shoulder portion to the maximum outer diameter of the agitating pin is set to 1 56~2. 14. The joining method according to any one of the preceding claims, wherein the lower end surface of the shoulder portion surrounds the periphery of the stirring pin to form a wrap-like stirring protrusion in a plan view. Strip. —U: If you apply for a patent. The joining method according to the invention, wherein before the first main joining process, the initial joining rotation is smaller than the main joining rotary tool used in the first main joining process, and the flat joint is used. An initial joining process of rubbing and mixing is performed from the surface side of the above-mentioned metal member. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; In the initial stage of the joining, the initial joining process is performed by the frictional engagement of the flat portion from the back side of the metal member. A, please ask for the scope of patents! The joining method according to the item, wherein in the upper main joining process, the start or end position of the friction _ is disposed on the protruding member disposed on the flat side of the metal members, and is performed after the main joining process In the repairing process, at least the material in the plasticized region formed in the first-major connection is connected to the protruding Μ τ B 筏 0, and the small-purpose repairing screwdriver is used for friction stir. The joining method according to the above aspect, wherein in the second main joining process of the above paragraph 52 201043370, the start of the friction stir or the position of the joint is provided on the protruding material disposed on the side of the flat portion of the metal members. Performing a repairing process after the second main joining process, in which the μv dry in the plasticized region formed in the second main containing project is used for at least the enthalpy adjacent to the above-mentioned sudden opening The tool is used for friction stir. 53