WO2015022894A1 - 摩擦撹拌接合方法 - Google Patents
摩擦撹拌接合方法 Download PDFInfo
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- WO2015022894A1 WO2015022894A1 PCT/JP2014/070733 JP2014070733W WO2015022894A1 WO 2015022894 A1 WO2015022894 A1 WO 2015022894A1 JP 2014070733 W JP2014070733 W JP 2014070733W WO 2015022894 A1 WO2015022894 A1 WO 2015022894A1
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- WIPO (PCT)
- Prior art keywords
- friction stir
- stir welding
- aluminum alloy
- probe
- members
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
- B23K20/2336—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer both layers being aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
- B23K20/124—Controlling or monitoring the welding process at the beginning or at the end of a weld
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Definitions
- the present invention relates to a friction stir welding method, and is particularly referred to as a difficult-to-join material in friction stir welding, an aluminum alloy casting, a 2000 series aluminum alloy material, a 4000 series aluminum alloy material, a 5000 series aluminum alloy material, Alternatively, the present invention relates to a method of advantageously performing friction stir welding using a rotary tool of a type in which friction stir welding is performed while pinching a 7000 series aluminum alloy material with two shoulder members such as a bobbin tool and a self-reacting tool. .
- a rotating tool (specifically, a probe or a pin) is inserted into a part to be joined between two members while rotating, and the materials to be joined are made to flow by stirring using frictional heat.
- FSW friction stir welding method
- heat generation at the joint is less than that in the normal fusion welding method. Strain is unlikely to occur, and it is not accompanied by a phase change peculiar to the fusion welding technique of melting and solidifying, and it can be joined in a solid state.
- the field in which such friction stir welding method is adopted has been expanding year by year. For example, by using such a friction stir welding method for joining transportation vehicle structures such as automobiles and railway vehicles, and joining IT equipment casings, etc., the use of aluminum materials that are lightweight front runners can be expanded. A great contribution has been made.
- any one of two shoulder members is provided so as to be movable in the axial direction with respect to the probe, and the two shoulder members are provided.
- a so-called self-reacting tool has been proposed that can change the interval between them.
- this kind of rotary tool since it became possible to join a hollow material etc. without backing, the application range of the friction stir welding method has further expanded.
- the present invention has been made in the background of such circumstances, and the problem to be solved is an aluminum alloy casting, a 2000 series aluminum alloy material, which is difficult to join during friction stir welding.
- Two materials of the same or different materials of 4000 series aluminum alloy material, 5000 series aluminum alloy material, and 7000 series aluminum alloy material are used, and they are friction stir welded using a rotary tool having two shoulder members. It is an object of the present invention to provide a method capable of effectively improving the use efficiency of the rotary tool by advantageously avoiding metal adhesion to the rotary tool at the end of friction stir welding.
- the group which consists of an aluminum alloy casting, 2000 series aluminum alloy material, 4000 series aluminum alloy material, 5000 series aluminum alloy material, and 7000 series aluminum alloy material The joint portion between the first member and the second member of the same or different materials selected from above is sandwiched between two shoulder members arranged at predetermined intervals in the axial direction of the rod-shaped probe in the rotary tool.
- the joint part of the first member and the second member is moved by moving the probe rotated together with the two shoulder members by the rotation of the rotary tool while pressing.
- the end surface on the joining end side in the joining portion of the first and second members is 1000%.
- An end tab member made of an aluminum alloy, a 3000 series aluminum alloy, a 6000 series aluminum alloy, or an 8000 series aluminum alloy is brought into contact, and the probe of the rotary tool is moved from the joining portion of the first and second members to the end tab material.
- the gist of the friction stir welding method is characterized in that the friction stir welding is completed.
- the end tab material is four times the diameter of the shoulder member in the joining direction of the first and second members by the rotary tool.
- the plate member has the above length and has a width that is at least twice the diameter of the shoulder member in a direction perpendicular to the joining direction.
- the end tab material has a thickness of 1/2 or less of the diameter of the probe in the rotary tool.
- the friction stir welding method according to the present invention is performed, for example, by abutting the first member and the second member and performing the abutting on the first member and the second member. And are carried out on the superposed site.
- a rotary tool suitably used in the present invention, there is generally a bobbin tool in which the two shoulder members are fixedly attached to the probe at a predetermined interval, or the probe
- a self-reacting tool in which one of the two shoulder members is fixed and the other is movable in the axial direction of the probe so that the distance between the two shoulder members can be changed.
- the bonding at the bonding portion is performed.
- the end tab material made of JIS standard 1000 series aluminum alloy, 3000 series aluminum alloy, 6000 series aluminum alloy, or 8000 series aluminum alloy is in contact with the end face on the end end side, which is easy to friction stir metal.
- the rotating tool that has been subjected to the friction stir welding operation for the joining portion is rotated, and enters the end tab material from the joining portion, and the end tab material is moved while friction stir. To adhere around the probe of the rotary tool by the friction stir welding operation at the joining site.
- the transition from the metal friction stirring by the rotary tool at the joining portion of the first member and the second member to the metal friction stirring by the rotary tool at the end tab material is performed.
- the friction stir of the metal in the finished tab material is easy, it can be performed smoothly, and thereby, the friction stir welding at the joining portion of the first member and the second member Since the metal supply to the end part can be effectively performed, the occurrence of voids or defects in the part can also be effectively avoided. Therefore, it is not necessary to greatly cut the end portion on the end side of joining at a proper joining site, and the loss of material can be advantageously reduced.
- It is an isometric view explanatory drawing which shows the form which concerns on an example of the joining end end side in the friction stir welding method according to this invention. It is a plane explanatory view which shows one movement form of the rotary tool for the friction stir welding on the welding end end side shown in FIG. It is longitudinal cross-sectional explanatory drawing which shows an example of the rotary tool used in this invention, Comprising: (a) is longitudinal cross-sectional explanatory drawing which concerns on an example of a bobbin tool, (b) concerns on an example of a self-reacting tool. It is a longitudinal cross-sectional explanatory drawing. It is a perspective explanatory view showing another example of the friction stir welding method to which the present invention can be applied.
- FIG. 1 shows one form on the joining end side when the friction stir welding method according to the present invention is carried out.
- the first member 2 and the second member 4 are abutted at their plate-like portions, and a friction stir welding operation is performed on the abutting portion 6.
- the first and second members 2 and 4 are joined to each other to obtain an integrally joined product.
- a rotary tool 10 as shown in FIG. 1 is used for friction stir welding of the abutting portion 6 which is a joining portion of the first member 2 and the second member 4. That is, here, the rotary tool 10 is a bobbin type tool having the same structure as the conventional one, and the upper shoulder member 12 and the lower shoulder member 14 having the same diameter (D) are separated from each other by a predetermined distance. In such a configuration that they are coaxially opposed to each other, they are connected by a rod-like probe 16 and can be rotated integrally around an axis.
- the abutting portions 6 of the first and second members 2 and 4 are moved in the vertical direction by the upper shoulder surface 12a of the upper shoulder member 12 and the lower shoulder surface 14a of the lower shoulder member 14.
- the rotating probe 16 By allowing the rotating probe 16 to enter the butting portion 6 while being pinched, the metal of the butting portion 6 can be frictionally stirred and flowed so that the two members 2 and 4 can be joined to each other. It is like that.
- the probe 16 is caused to enter the abutting portion 6 of the first and second members 2, 4 where the friction stir flow of these metals is not easy.
- metal tends to stick around the probe 16 in the rotary tool 10, and therefore the abutting portion is caused by the end of the friction stir welding operation.
- a large amount of material is generated because it is necessary to generate a defect part without being supplied and to cut such a defect part into a bonded product. So problems such as is induced leading to Do loss.
- a specific aluminum alloy material in which metal easily flows by friction stirring is used as the end tab member 20 and is placed in contact with the end surface of the first and second members 2, 4 at the joining end (butting portion 6), and the butting portion 6.
- the probe 16 of the bobbin type rotary tool 10 is guided to the end tab member 20 so that the friction stir welding operation is completed.
- any of the above-described specific aluminum alloys that give the end tab material 20 exhibits good metal flowability during friction stirring, and therefore into the end tab material 20 of such a material.
- the rotary tool 10 is moved between the upper shoulder member 12 and the lower shoulder member 14 between the upper shoulder member 12 and the lower shoulder member 14 in a rotational state around the axis.
- the butt 6 is frictionally agitated and joined by being moved along the butt 6 relative to the first and second members 2 and 4 while clamping the butt 6.
- the end tab member 20 enters the end tab member 20 from the end of the portion 6, and the rotary tool 10 is rotated as it is, and the end tab member 20 is allowed to pass through the end tab member 20 while frictionally stirring the metal of the end tab member 20.
- the metal adhered around the probe 16 of the rotary tool 10 in the friction stir welding operation of the butting portions 6 of the second members 2 and 4 is effective due to the friction stirring of the metal when passing through the end tab member 20. Removed It is to become a Rukoto. As a result, the rotating tool 10 that is detached from the end tab member 20 and taken out outward has almost no attached metal, and therefore, the troublesome metal removal operation from the rotating tool 10 is performed. It is no longer necessary, and such a rotary tool 10 can be used repeatedly as it is for the next friction stir welding operation, so that the use efficiency of the rotary tool 10 is improved. It can be advantageously increased.
- the end tab member 20 has good metal fluidity. Since the predetermined aluminum alloy material is used, the metal is moved from the end tab member 20 side by the friction stir action by the rotary tool 10 to the end end side of the butted portion 6 of the first and second members 2 and 4. Therefore, it is possible to effectively prevent the occurrence of a defective portion at the end portion of the butt portion 6. Therefore, a good joint end can be formed, the amount of resection at the joint end portion can be effectively reduced, and the advantage that the loss of material can be advantageously reduced can be enjoyed. Can A.
- the length (Le) in the direction in which the butting portion 6 extends is generally four times the diameter (D) of the shoulder members 12 and 14 in the rotary tool 10, in other words, the diameter of each shoulder surface 12a and 14a.
- the width (We) is a length in a direction perpendicular to the length (Le) in the joining direction, and the width (We) of the shoulder members 12 and 14 of the rotary tool 10 is desirable. It is desirable that the size is twice or more the diameter (D).
- the size and shape of the end tab member 20 are appropriately selected so as to satisfy the conditions of length (Le) and width (We).
- the thickness (Te) of the end tab member 20 is set to a dimension that is equal to or less than 1 ⁇ 2 of the diameter (d) of the probe 16 in the rotary tool 10, whereby the friction according to the present invention is achieved.
- the stir welding operation can proceed more advantageously.
- the shoulder members 12 and 14 of the rotary tool 10 have the same diameter.
- the diameters of the shoulder members 12 and 14 can be varied to some extent.
- the upper shoulder member It is desirable to make the diameter of 12 larger than the diameter of the lower shoulder member 14, and the diameter (D) of the shoulder members 12, 14 is the diameter of the larger shoulder surface.
- the shoulder members 12 and 14 generally have a diameter (D) that is at least 4 mm larger than the diameter (d) of the probe 16.
- the diameter of the smaller shoulder member (14) is smaller than the value obtained by adding 2 mm to the diameter (d) of the probe 16. It is set not to be.
- the first member 2 is composed of two shoulder members 12 and 14 arranged at predetermined intervals in the axial direction of the rod-shaped probe.
- Various known rotary tools that can be friction stir welded by the rotation of the rotary tool 10 while clamping the butting portion (joined part) 6 with the second member 4 can be used as appropriate.
- FIG. 3A a structure in which the upper shoulder member 12 and the lower shoulder member 14 are coaxially connected and fixed by a probe 16 in a form in which the upper shoulder member 12 and the lower shoulder member 14 are opposed to each other with a predetermined interval.
- the so-called bobbin tool 10 can be used.
- the lower shoulder member 14 is screwed to the probe 16 so that the length between the two shoulder members 12 and 14 of the probe 16 is regulated, and the screw nut is further screwed.
- the lower shoulder member 14 is fixed so as not to move.
- the probe 17 is coaxially fixed to the lower shoulder member 15 of the two shoulder members, and passes through the upper shoulder member 13 in the axial direction. The probe 17 is inserted so that the probe 17 can move in the axial direction with respect to the upper shoulder member 13, and the distance between the upper shoulder member 13 and the lower shoulder member 15 can be changed. It is also possible to use a structured tool, the so-called self-reacting tool 11.
- the gap between the two shoulder members 12, 14; 13, 15 (the length of the probes 16, 17) is applied so that an appropriate clamping action can be applied to the abutting portion 6 serving as a joining site. It will be comprised so that it may become somewhat smaller than the thickness of the butt
- the friction stir welding operation using the rotary tool 10 according to the present invention such as the bobbin tool 10 and the self-reacting tool 11 is performed at the thickness of the joining portion, for example, the thickness of the first and second members 2 and 4 ( This is advantageously employed when t) is generally 2 mm or more.
- the upper limit of the thickness (t) of the first and second members 2 and 4 is generally about 10 mm.
- the friction stir welding operation is performed on the butt portion 6 between the first member 2 and the second member 4 so that the members 2 and 4 are line-joined.
- the plate-like flange portion 32 a of the upper member 32 (first member) having a hat-shaped cross-section that gives the hollow structure 30, and the lower member 34 (
- the present invention can also be applied to a system in which the plate-like flange portion 34a of the second member) is overlapped and a friction stir welding operation is performed on the overlapping portion 36.
- the end tab member 24 is brought into contact with the end face in the longitudinal direction of the overlapping portion 36 of the flange portions 32 a, 34 a.
- the end tab member (24) is brought into contact with the end surface in the width direction of the head, and is guided in a direction perpendicular to the end tab member (24) side from the end end side portion of the overlapping portion 36 by the rotary tool 10. It is possible to allow the friction stir welding operation to proceed, and in this case as well, it is possible to enjoy the same effect.
- the present invention is, for example, a technique for joining a stretched material such as a plate material or an extruded material or a casting to manufacture a large material.
- the joined product thus obtained can be advantageously used as a structural member such as a railway vehicle structure or an automobile subframe, and exhibits its characteristics. To do.
- the end tab material (20) is entered from the end of the abutting portion (6), and further, the end tab material (20) Move the bobbin tool (10) in the longitudinal direction and let it pass By and was terminated FSW operation.
- the material of the finished tab material (20) is 1000 series aluminum alloy, 3000 series aluminum alloy, 6000 series aluminum alloy or 8000 series.
- the aluminum alloy metal adhesion to the bobbin tool (10) can be effectively suppressed or prevented, so that the bobbin tool (10) after the friction stir welding operation has been completed. It was confirmed that the following two members (2, 4) can be used for the friction stir welding operation.
- the length (Le) in the joining direction of the end tab member (20) is four times or more the diameter (D) of the shoulder member (12, 14) in the bobbin tool (10).
- the width (We) in the direction perpendicular to the joining direction is at least twice the diameter (D) of the shoulder member (12, 14), so that the metal adheres to the bobbin tool (10).
- Second member First member 4 Second member 6 Butting portion 8 Friction stir welding portion 10 Rotary tool (bobbin tool) 11 Self-reacting tool 12, 13 Upper shoulder member 14, 15 Lower shoulder member 12a Upper shoulder surface 14a Lower side Shoulder surface 16, 17 Probe 18 Locking nut 20, 24 End tab material 30 Hollow structure 32 Upper member 32a, 34a Flange portion 34 Lower member 36 Superposed portion
Abstract
Description
板厚(t):2.8~9.2mm、板幅:300mm、長さ:5000mmの寸法を有する、下記表1~2に示される各種アルミニウム材質の板状の第一の部材(2)及び第二の部材(4)を用い、それらの板幅方向に対向する側面を突き合わせて、その突合せ部(6)の下方に位置するように間隙を設けてなるテーブル上に、それら2つの部材(2,4)をそれぞれ固定、保持せしめた。また、それら突き合わされた2つの部材(2,4)の突合せ部(6)の接合終了端側の端部には、板厚(Te)、接合方向長さ(Le)及び接合方向に直角な方向の幅(We)が各種寸法とされた、下記表1~2に示される各種アルミニウム材質の板状の終了タブ材(20)を用いて、図1に示される如く突き合わせ、先の2つの部材(2,4)と同様にテーブル上に固定、保持せしめた。
前記実施例1におけるFSW試験例1に係る摩擦撹拌接合操作において、第一及び第二の部材(2,4)の板厚及び終了タブ材(20)の板厚を変化させると共に、終了タブ材(20)の接合方向長さ(Le)と、それに直角な方向の幅(We)の寸法を、下記表3に示されるように変えたこと以外は、実施例1と同様にして、摩擦撹拌接合操作を実施した。また、その際、ボビンツール(10)が終了タブ材(20)を通過した後、摩擦撹拌接合操作が終了せしめられるようにした。更に、その摩擦撹拌接合(FSW)操作の終了したボビンツール(10)をそのまま用いて、実施例1と同様にして、2回目の摩擦撹拌接合操作を実施した。そして、そのような1回目の摩擦撹拌接合操作が終了した後におけるボビンツール(10)のメタル凝着状況を観察して、実施例1と同様に評価し、その結果を、2回目のFSW試験結果と共に、下記表3に併せ示した。
6 突合せ部 8 摩擦撹拌接合部
10 回転工具(ボビンツール) 11 セルフリアクティングツール
12,13 上側ショルダ部材 14,15 下側ショルダ部材
12a 上側ショルダ面 14a 下側ショルダ面
16,17 プローブ 18 止めナット
20,24 終了タブ材 30 中空構造体
32 上側部材 32a,34a フランジ部
34 下側部材 36 重合せ部
Claims (7)
- アルミニウム合金製鋳物、2000系アルミニウム合金材、4000系アルミニウム合金材、5000系アルミニウム合金材及び7000系アルミニウム合金材からなる群より選ばれた同種又は異種材質の第一の部材と第二の部材との接合部位を、回転工具におけるロッド状のプローブの軸方向に所定の間隔をおいて配した二つのショルダ部材にて挟圧しつつ、かかる回転工具の回転によって、それら二つのショルダ部材と共に回転せしめられる前記プローブを、該接合部位の延びる方向に移動させることにより、前記第一の部材と前記第二の部材との接合部位を摩擦撹拌接合するに際し、
前記第一及び第二の部材の接合部位における接合終了端側の端面に対して、1000系アルミニウム合金、3000系アルミニウム合金、6000系アルミニウム合金又は8000系アルミニウム合金からなる終了タブ材を当接せしめ、前記回転工具のプローブが、前記第一及び第二の部材の接合部位から該終了タブ材に導かれて、前記摩擦撹拌接合が終了せしめられるようにしたことを特徴とする摩擦撹拌接合方法。 - 前記終了タブ材が、前記回転工具による前記第一及び第二の部材の接合方向において前記ショルダ部材の直径の4倍以上の長さを有していると共に、該接合方向に直角な方向において該ショルダ部材の直径の2倍以上の幅を有している板材である請求項1に記載の摩擦撹拌接合方法。
- 前記終了タブ材が、前記回転工具におけるプローブの直径の1/2以下の厚さを有している請求項1又は請求項2に記載の摩擦撹拌接合方法。
- 前記第一の部材と前記第二の部材とを突き合わせ、その突合わせ部位に対して、前記摩擦撹拌接合が実施される請求項1乃至請求項3の何れか一つに記載の摩擦撹拌接合方法。
- 前記第一の部材と前記第二の部材とを重ね合わせ、その重合わせ部位に対して、前記摩擦撹拌接合が実施される請求項1乃至請求項3の何れか一つに記載の摩擦撹拌接合方法。
- 前記回転工具が、前記プローブに対して、前記二つのショルダ部材を所定の間隔をおいて固定的に取り付けてなるボビンツールである請求項1乃至請求項5の何れか一つに記載の摩擦撹拌接合方法。
- 前記回転工具が、前記プローブに対して、前記二つのショルダ部材のうちの一方を固定し、他方を該プローブの軸方向に移動可能として、それら二つのショルダ部材の間隔が変更され得るようにしたセルフリアクティングツールである請求項1乃至請求項5の何れか一つに記載の摩擦撹拌接合方法。
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