WO2018070317A1 - Dispositif et procédé de soudage par friction-malaxage - Google Patents

Dispositif et procédé de soudage par friction-malaxage Download PDF

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Publication number
WO2018070317A1
WO2018070317A1 PCT/JP2017/036093 JP2017036093W WO2018070317A1 WO 2018070317 A1 WO2018070317 A1 WO 2018070317A1 JP 2017036093 W JP2017036093 W JP 2017036093W WO 2018070317 A1 WO2018070317 A1 WO 2018070317A1
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Prior art keywords
surface side
stir welding
heating
friction stir
joining
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PCT/JP2017/036093
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English (en)
Japanese (ja)
Inventor
松下　宗生
池田　倫正
公一 谷口
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Ｊｆｅスチール株式会社
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Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to KR1020197006920A priority Critical patent/KR102181820B1/ko
Priority to CN201780056730.5A priority patent/CN109803784B/zh
Priority to JP2017559718A priority patent/JP6497451B2/ja
Publication of WO2018070317A1 publication Critical patent/WO2018070317A1/fr

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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
    • B23K20/1225—Particular aspects of welding with a non-consumable tool
    • 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
    • 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
    • B23K20/1235—Controlling or monitoring the welding process with temperature control during joining
    • 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
    • B23K20/125—Rotary tool drive mechanism

Definitions

  • the rotary tool is inserted into an unjoined portion between the workpieces and moved while rotating, and the workpiece is softened by frictional heat with the rotary tool, and the softened portion is stirred by the rotary tool.
  • the present invention relates to a friction stir welding method in which joining is performed without adding a filler material by using the generated plastic flow, and an apparatus for realizing the friction stir welding method.
  • Patent Document 1 As a friction welding method, in Patent Document 1, by rotating both or one of a pair of metal materials, the metal material generates frictional heat and softens, while the softened portion is stirred to cause plastic flow. Thus, a technique for joining metal materials is disclosed.
  • Patent Document 2 a tool made of a material that is substantially harder than a workpiece is inserted into an unjoined portion of the workpiece, and the tool is moved while being rotated.
  • a method is disclosed in which workpieces are continuously joined in the longitudinal direction by heat and plastic flow.
  • the friction welding method described in Patent Document 1 is a method of rotating workpieces and welding them by frictional heat between workpieces.
  • the friction stir welding method disclosed in Patent Document 2 is a method of joining by moving a tool while rotating a joining member in a fixed state.
  • the friction stir welding method since the tool is moved and joined, even a member that is substantially infinitely long with respect to the welding direction has an advantage that it can be continuously solid-phase joined in the longitudinal direction.
  • it is a solid-phase joining using the plastic flow of the metal by the frictional heat of a tool and a joining member, it can join, without melt
  • the heating temperature is low, deformation after joining is small, the joint is not melted, so there are few defects, and in addition, there are many advantages such as not requiring a filler material.
  • the friction stir welding method is a method of joining low melting point metal materials represented by aluminum alloys and magnesium alloys, and its use is expanding in the fields of aircraft, ships, railway vehicles, automobiles, and the like.
  • the reason for this is that these low melting point metal materials are difficult to obtain satisfactory characteristics of the joints by conventional arc welding methods, and the productivity is improved and the quality is high by applying the friction stir welding method. It is because a junction can be obtained.
  • the application of friction stir welding to structural steel which is mainly applied as a structural material such as buildings, ships, heavy machinery, pipelines, and automobiles, is subject to solidification cracking and hydrogen cracking, which are problems in conventional fusion welding. Can be avoided, and the structural change of the steel material can be suppressed, so that it can be expected that the joint performance is excellent. Further, in the friction stir welding method, a clean interface is created by stirring the bonding interface with a rotating tool and the clean surfaces are brought into contact with each other. Therefore, an advantage that a preparatory step such as diffusion bonding is unnecessary can be expected. Thus, the application of the friction stir welding method to structural steel is expected to have many advantages. However, since there is a problem in joining workability such as suppression of defect generation during joining and an increase in joining speed, the friction stir welding method has not been widely used in structural steel compared to low melting point metal materials.
  • Patent Document 5 and Patent Document 6 disclose a joining method in which a heating means is added for the purpose of improving joining workability.
  • Patent Document 5 includes a heating unit using an induction heating device, and by heating the workpieces before and after joining, friction that increases the joining speed and eliminates cracks in the joined part.
  • a stir welding method is disclosed.
  • Patent Document 6 has a heating means using a laser device, and the workpiece is partially heated immediately before joining, thereby suppressing the microstructure change around the heating region due to preheating and increasing the joining speed.
  • a friction stir welding apparatus which is designed to be simplified is disclosed.
  • Patent Document 7 has heating means using a laser device, and when the workpieces are partially heated immediately before joining, the surface temperature and depth of the heating region of the workpieces are strictly controlled.
  • a friction stir welding apparatus is disclosed in which the plastic flow failure due to insufficient heating of the workpieces is eliminated, and the joining workability is improved with sufficient strength.
  • Patent Document 8 and Patent Document 9 one rotating tool is provided at the top and bottom, and a rotating tool is disposed on the front side and the back side of the overlapping portion of the two metal plates so as to face each other vertically.
  • a rotating tool is disposed on the front side and the back side of the overlapping portion of the two metal plates so as to face each other vertically.
  • the double-side friction stir welding method disclosed in Patent Document 8 and Patent Document 9 is considered effective as a method for eliminating the temperature difference formed in the thickness direction of the workpiece.
  • the improvement of joining workability and tool life by reducing the tool load using the pre-heat treatment process that heats the steel sheet as the workpiece by the heating means provided in front of the rotary tool is completely considered. It has not been.
  • the present invention has been made in view of the above-mentioned present situation, and at the time of friction stir welding, an object of the present invention is to solve the plastic flow failure due to insufficient heating of work materials and to improve the joining workability with sufficient strength. To do.
  • the relationship between the position of partial heating of the workpiece and the frictional heat generation due to the dynamic friction coefficient between the rotating tool material or the material coated on the surface of the rotating tool and the workpiece affects the workability.
  • the heating means for performing the pre-heat treatment process and the rotary tool are arranged on the same surface side (for example, the surface side)
  • the heat source is present only on the same surface side of the workpiece.
  • the temperature is lower than that on the front side, and on the back side from the front side, a temperature difference occurs in the thickness direction of the workpiece.
  • the inventors examined various preheat treatment process conditions before friction stir welding.
  • the present invention is based on the above knowledge, and particularly arises from insufficient heating due to a temperature difference occurring in the plate thickness direction of the workpiece, which is a concern when the friction stir welding method is applied to the joining of structural steel. It is intended to eliminate the plastic flow failure and improve the joining workability with sufficient strength.
  • the gist configuration of the present invention is as follows. [1] A pair of rotary tools are arranged opposite to one side and the other side of a steel plate as a workpiece, respectively, and moved in the joining direction while rotating the pair of rotary tools at an unjoined portion between the steel plates.
  • the dynamic friction coefficient between the steel plate and the material of the pair of rotating tools or the material coated on the surface of the pair of rotating tools is 0.6 or less
  • the tool includes a shoulder portion and a pin portion arranged on the shoulder portion and sharing the rotation axis with the shoulder portion, and the shoulder portion and the pin portion are formed of a material harder than the steel plate
  • Steel plate While rotating the pair of rotating tools are pressed against the one surface side and the other surface side of the steel plate and moved in the joining direction while rotating the pair of rotating tools, and the rotation disposed on the one surface side
  • the area of the maximum diameter portion is less than or equal to 65% or more of the area of the heating area is a straight line parallel to the welding direction through the rotation axis of the rotary tool arranged on the one surface side of the surface of the steel plate Line and the junction center line And a straight line separated by the same distance as the maximum radius of the pin portion of the rotary tool arranged on the one surface side to the retreating side.
  • T A1 is a temperature represented by the following formula (2).
  • Both of the pair of rotary tools include a shoulder portion and the pin portion, and the pin length of the rotary tool arranged on the one surface side is the pin length of the rotary tool arranged on the other surface side.
  • the rotation direction of the rotary tool arranged on the one surface side is the opposite direction to the rotation direction of the rotary tool arranged on the other surface side, according to any one of [1] to [4]. Friction stir welding method.
  • a friction stir welding apparatus that joins unjoined portions between steel plates that are workpieces, and is disposed so as to face a gripping device that fixes the steel plates, and one side and the other side of the steel plates
  • a pair of rotary tools that can move in the joining direction while rotating at the unjoined portion between the steel plates, and a heating means that is provided in front of the joining direction of the rotary tool disposed on the one surface side and that heats the steel plates.
  • the rotating tool and the control means for controlling the heating means so as to realize the following state 1 the rotating tool arranged on at least one side is disposed on the shoulder,
  • the shoulder portion and the pin portion sharing the rotation axis, and the shoulder portion and the pin portion are formed of a material harder than the steel plate, and the material of the pair of rotating tools or the pair of rotating tools Surface coated material and front Friction stir welding apparatus dynamic friction coefficient between the steel sheet is 0.6 or less.
  • the area of the maximum diameter portion is less than or equal to 65% or more of the area of the heating area is a straight line parallel to the welding direction through the rotation axis of the rotary tool arranged on the one surface side of the surface of the steel plate It is located between the line and a straight line that is parallel to the joining center line and that is separated from the retreating side by the same distance as the maximum radius of the pin portion of the rotary tool disposed on the one surface side.
  • T A1 is a temperature represented by the following formula (2).
  • the friction stir welding apparatus which is shorter than the length.
  • the friction stirrer according to any one of [12] to [14], wherein an axis of at least one rotary tool in the pair of rotary tools is inclined in a direction in which the pin portion precedes the joining direction. Joining device.
  • the rotation direction of the rotary tool arranged on the one surface side is the reverse direction of the rotation direction of the rotary tool arranged on the other surface side, according to any one of [12] to [15].
  • Friction stir welding equipment [17] The friction stir welding apparatus according to any one of [12] to [16], wherein the control unit controls the rotating tool and the heating unit so as to realize the following state 2.
  • the friction stir welding apparatus according to [19], further including a cooling unit that cools the bonding portion, and the cooling unit is provided behind the rear heating unit in the bonding direction.
  • the friction stirrer according to any one of [12] to [18], further including a cooling unit that cools a bonded portion of the steel plates, the cooling unit provided at a rear side in the bonding direction of the rotary tool. Joining device.
  • the friction stir welding apparatus according to [21], further including a rear heating unit that heats the joint, and the rear heating unit is provided behind the cooling unit in the joining direction.
  • the present invention it is possible to eliminate the plastic flow failure caused by insufficient heating due to the temperature difference occurring in the plate thickness direction of the workpiece, and to improve the joining workability of the friction stir welding. Furthermore, a change in the microstructure around the heating region is also suppressed, and a high joint strength can be obtained at the joint.
  • FIG. 1 is a schematic diagram illustrating a friction stir welding method according to the present embodiment.
  • FIG. 2 is a schematic diagram illustrating the gripping device.
  • FIG. 3 is a diagram showing an example of a region in which a workpiece is frictionally stirred by a rotary tool from both the front side and the back side, a heating region in a preheating process, a cooling region after joining, and a reheating region (top view and A- (A sectional view).
  • FIG. 4 is a diagram showing the relationship between the temperature and tensile strength of the steel plates to be joined by the friction stir welding method according to this embodiment.
  • FIG. 5 is a diagram illustrating a cross-sectional dimension of the rotary tool.
  • FIG. 1 is a schematic diagram illustrating a friction stir welding method according to the present embodiment
  • FIG. 2 is a schematic diagram illustrating a gripping device.
  • the description of the gripping device 21 is omitted, and in FIG. 2, only the steel plate 3 and the gripping device 21 are illustrated.
  • the friction stir welding method according to the present embodiment as shown in FIG. 1, there is a pre-heat treatment process in which the steel plate is heated by a heating means provided in the front in the joining direction, and facing one side and the other side, respectively.
  • Rotating tools that are arranged and moved in the joining direction while rotating by inserting the rotating tool into the unjoined part between the steel plates from both the one side and the other side with respect to the steel plate that is the work material. While the steel plates are softened by frictional heat between the steel plates and the steel plates, the softened portions are agitated with opposing rotating tools to cause plastic flow, thereby joining the steel plates together.
  • reference numeral 1 is a surface-side rotating tool
  • 2 is a rotating shaft of the surface-side rotating tool
  • 3 is a steel plate
  • 4 is a joint
  • 5 is a heating means
  • 6 is a cooling means.
  • 7 is a rear heating means
  • 8 is a shoulder portion of the front surface side rotating tool
  • 9 is a pin portion of the front surface side rotating tool
  • 15 is a back surface side rotating tool
  • 16 is a back surface side rotating tool.
  • 17 is a pin portion of the back surface side rotation tool
  • 19 is a rotation axis of the back surface side rotation tool
  • 20 is a control means.
  • ⁇ indicates the front surface side rotation tool inclination angle
  • ⁇ indicates the rear surface side rotation tool inclination angle.
  • AS indicates an advancing side
  • RS indicates a retreating side.
  • one side is described as the front side
  • the other side is described as the back side.
  • the front surface side rotation tool 1 and the back surface side rotation tool 15 may be collectively described as a pair of rotation tools.
  • the advancing side is defined as the side where the tool rotation direction and the joining direction coincide with each other
  • the retreating side is defined as the side where the tool rotation direction and the joining direction are opposite to each other.
  • the butted portion that is not yet joined just by butting the steel plates 3 is described as “unjoined portion”, and the portion joined and integrated by plastic flow is described as “joined portion”. To do.
  • the steel plate 3 is fixed from the front and back surfaces using a gripping device 21.
  • the gripping device 21 includes a lower jig 22 that fixes the back surface of the steel plate 3, an upper jig 23 that fixes the surface of the steel plate 3, and a clamp 24 that presses the upper jig 23 downward.
  • the pin portion 9 of the front surface side rotating tool and the pin portion 17 of the back surface side rotating tool are inserted into the unjoined portion, and the front surface
  • the shoulder portion 8 of the side rotating tool and the shoulder portion 16 of the back surface side rotating tool are pressed and joined to the front surface side and the back surface side of the steel plate 3.
  • the front end of the pin portion 9 of the front surface side rotary tool and the front end of the pin portion 17 of the back surface side rotary tool so that the friction by the shoulder portion and the stirring by the pin portion are appropriately performed and sound joining is possible.
  • a gap ⁇ may be provided between the two.
  • the gap ⁇ is preferably 0.1 mm or more.
  • the load of the surface side rotation tool 1 and the back surface side rotation tool 15 by the deformation resistance of the material at the time of stirring can be reduced.
  • the gap ⁇ is preferably 0.3 mm or less.
  • At least the surface-side rotary tool 1 includes a shoulder portion and a pin portion disposed on the shoulder portion and sharing the rotation axis with the shoulder portion, and at least the shoulder portion and the pin portion are covered. It is formed of a material harder than the steel plate 3 that is a processed material.
  • the shoulder of the rotating tool has a tapered shape that faces upward in the rotational direction. It is preferable to provide.
  • the pin length (pin length) needs to be equal to the thickness of the workpiece.
  • the longer the pin length the larger the load applied to the tip of the pin. Therefore, it is preferable that the pin length is shorter in order to improve the joining workability and tool life.
  • the pin length is calculated by the difference in height between the tip portion of the pin portion and the highest position of the shoulder portion, as indicated by reference numeral c in (1) to (4) of FIG. Length.
  • the pin length of a pair of rotary tools is the same length
  • the pin length is about half of the thickness of the steel plate 3, so the load applied to each rotary tool rotates only from one side. Lower than when tools are inserted and joined.
  • the pin length of the front surface side rotary tool 1 is shorter than the pin length of the rear surface side rotary tool 15 among the pin lengths of the pair of rotary tools, the load on the front surface side rotary tool 1 can be reduced. Sufficient heat is applied by the heating means 5 to the joint near the tip of the pin portion 17 of the back surface side rotary tool, so that the load on the back surface side rotary tool 15 is also reduced.
  • the axis of the pair of rotary tools may be tilted in the direction in which the pin portion precedes the joining direction. Since the pair of rotary tools is formed of a material harder than the steel plate 3, a material having poor toughness such as ceramic is used. For this reason, when a force in the bending direction is applied to the pin portions of the pair of rotating tools, the stress concentrates on the local portion and the pair of rotating tools is destroyed. On the other hand, by inclining the axis of the pair of rotating tools, the load applied to the rotating tools is set as a component force compressed in the axial direction, and the force in the bending direction can be reduced. Thereby, damage to the rotary tool 1 can be avoided.
  • the inclination angle of the axis of the rotary tools 1 and 15 is, for example, 1 ° or more and 5 ° or less.
  • the pair of rotary tools only the axis of one rotary tool may be tilted, or the axes of both rotary tools may be tilted.
  • the angle of inclination of the axis of the pair of rotary tools may be different.
  • the structure of the gripping device 21 for fixing the steel plate 3 can be simplified as compared with the friction stir welding method for joining.
  • FIG. 3 is a diagram showing an example of a region in which a workpiece is frictionally stirred by a rotary tool from both the front side and the back side, a heating region in a preheating process, a cooling region after joining, and a reheating region (top view and A- (A sectional view).
  • the joining center line 10 indicates a straight line passing through the rotation axis 2 of the surface-side rotating tool 1 on the surface of the steel plate 3 and parallel to the joining direction.
  • the RS line 11 is a straight line parallel to the joining center line 10 and separated to the retreating side by the same distance as the maximum radius of the pin portion 9 of the rotary tool, 12 is a heating area, and 13 is a cooling area.
  • a indicates the diameter of the shoulder portion 8 of the surface-side rotating tool
  • b indicates the maximum diameter of the pin portion 9 of the surface-side rotating tool
  • X indicates the minimum distance between the heating region 12 and the surface-side rotating tool 1
  • D Indicates the depth of the heating region 12
  • t indicates the thickness of the steel plate 3.
  • FIG. 4 is a diagram showing the relationship between the temperature and tensile strength of the steel plates to be joined by the friction stir welding method according to this embodiment.
  • the steel plate 3 to be joined by the friction stir welding method of the present embodiment is usually about 30% strength at room temperature at a temperature of about 80% of TA1 , which is the transformation temperature of steel. It becomes. Moreover, when it becomes higher than this temperature, the intensity
  • the surface temperature T S of the steel plate 3 is the heating region 12 a region which satisfies the following formula (1).
  • T S ⁇ 0.8 ⁇ T A1
  • T A1 (° C.) of steel
  • T A1 (° C.) 723-10.7 [% Mn] ⁇ 16.9 [% Ni] +29.1 [% Si] +16.9 [% Cr] +290 [% As] +6.38 [% W] ⁇ (2) Said [% M] is content (mass%) of M element in the steel plate 3 which is a workpiece, and is set to 0 when not containing.
  • T S of the steel plate 3 in the heating region 12 does not increase excessively.
  • a temperature gradient (temperature variation on the surface) may exist on the surface of the heating region 12.
  • the high surface temperature is preferably 1.5 ⁇ T M ° C. or less.
  • the surface temperature of the steel plate 3 in the heating region 12 is less than T M ° C. until the surface temperature of the steel plate 3 contacts the surface-side rotating tool 1 passing through the heating region 12.
  • Minimum distance X between the heating region on the surface of the steel plate and the rotating tool on the side provided with the heating device not more than the diameter of the shoulder of the rotating tool
  • the minimum distance X between the heating region 12 on the surface of the steel plate 3 and the surface-side rotating tool 1 is large. If it becomes too much, the temperature in the heating region 12 is lowered before joining, and the effect of preheating cannot be sufficiently obtained. For this reason, in the friction stir welding method according to the present embodiment, the minimum distance X between the heating region 12 on the surface of the steel plate 3 and the surface-side rotating tool 1 moving in the joining direction is equal to or less than the diameter of the shoulder 8 of the rotating tool. It is.
  • the minimum distance X between the heating region 12 and the rotating tool 1 becomes too small, the surface-side rotating tool 1 may be damaged by the heat of the heating means 12, so that the heating region 12 on the surface of the steel plate 3 is joined in the joining direction. It is preferable that the minimum distance X with the moving surface-side rotating tool 1 is not less than 0.1 times the diameter of the shoulder portion 8 of the surface-side rotating tool. In the present embodiment, the diameter of the shoulder 8 of the surface-side rotating tool is, for example, about 8 to 60 mm. In order to sufficiently obtain the effect of preheating, the moving speed of the surface-side rotating tool 1 is preferably 200 mm / min or more and 3000 mm / min or less.
  • Area of the heating region on the surface of the steel plate not more than the area of the maximum diameter portion of the pin portion of the rotary tool on the side provided with the heating device
  • the heating region 12 becomes too large, the microstructure of the heating region 12 and its peripheral region changes.
  • the martensite is tempered to cause softening and greatly reduce the joint strength. .
  • the area of the heating region 12 on the surface of the steel plate 3 is equal to or less than the area of the maximum diameter portion of the pin portion 9 of the rotary tool.
  • the area of the heating region 12 on the surface of the steel plate 3 is 0.1 times or more the area of the maximum diameter portion in the pin portion 9 of the surface-side rotating tool.
  • the maximum diameter of the pin portion 9 of the surface-side rotating tool is, for example, about 2 to 50 mm.
  • the maximum diameter of the pin portion 9 of the surface-side rotating tool is the maximum diameter among the diameters obtained at the cut surface when one pin portion is cut in a cross section perpendicular to the axial direction.
  • FIG. 5 is a diagram showing the cross-sectional dimensions of the rotary tool.
  • the diameter of the pin portion 9 of the surface side rotating tool does not change along the axial direction
  • the diameter of the upper surface of the pin portion (4 mm in the figure) is set to the pin portion.
  • the maximum diameter may be used.
  • the pin portion 9 of the rotary tool has a tapered shape or the like and the pin diameter varies depending on the position in the axial direction, the largest diameter may be set as the maximum diameter of the pin portion.
  • the shape of the heating region 12 may be any shape such as a circle, an ellipse, or a rectangle.
  • the area of the heating region located between the joining center line and the RS wire 65% or more of the area of the heating region on the surface of the steel plate
  • the plastic flow starts from the advanced side
  • the advanced side is the starting point of plastic flow
  • insufficient heating of the steel plate 3 as the workpiece is likely to occur.
  • the advancing side is preferentially heated and the steel plate is softened to promote plastic flow, suppress the occurrence of defects, and increase the joining speed.
  • the dynamic friction coefficient between the material of the surface-side rotating tool 1 or the material coated on the surface of the surface-side rotating tool 1 and the steel plate 3 to be joined is 0.6 or less, the surface-side rotating tool 1 and the steel plate Friction heat and plastic flow generated between the two are reduced.
  • the advanced side located in front of the surface-side rotating tool 1 is a portion that becomes a starting point of plastic flow, and is a region where frictional heat between the surface-side rotating tool 1 and the steel plate 3 is greatly generated.
  • the dynamic friction coefficient tends to decrease in a high temperature state, if this part is heated to a high temperature by preheating, sufficient frictional heat generation cannot be obtained when the dynamic friction coefficient between the surface-side rotating tool 1 and the steel plate 3 is small.
  • the dynamic friction coefficient between the material of the surface-side rotating tool 1 or the material coated on the surface of the surface-side rotating tool 1 and the steel plate 3 is 0.6 or less, 65% or more of the area is positioned between the joint center line 10 and the RS wire 11 parallel to the joint center line 10, and the retreating side is preferentially heated.
  • This promotes plastic flow on the retreating side, which is the middle of plastic flow, while ensuring frictional heat generation on the advanced side, which is the starting point of plastic flow, suppresses the occurrence of defects, and increases the joining speed.
  • the area range of the heating region 12 located between the bonding center line 10 and the RS wire 11 is more preferably 80% or more, and may be 100%.
  • the center of the heating region 12 is positioned between the RS line 11 and the straight line passing through the midpoint between the junction center line 10 and the RS line 11.
  • the center of the heating region 12 is positioned on the retreating side with respect to the bonding center line 10, and the distance from the center of the heating region 12 to the bonding center line 10 is set to 0 of the maximum radius in the pin portion 9 of the rotary tool. It is preferable to be 5 times or more and 1 time or less.
  • the steel plate 3 to be joined by the friction stir welding method of the present embodiment usually has a strength of about 30% of the strength at normal temperature at a temperature of about 80% of TA1 , which is the transformation temperature of the steel. . Moreover, when it becomes higher than this temperature, the intensity
  • T A1 (° C.) can be obtained by the following formula (2).
  • T A1 (° C.) 723-10.7 [% Mn] ⁇ 16.9 [% Ni] +29.1 [% Si] +16.9 [% Cr] +290 [% As] +6.38 [% W] ⁇ (2) Said [% M] is content (mass%) of M element in the steel plate 3 which is a workpiece, and is set to 0 when not containing.
  • the strength of the steel plate 3 tends to decrease as the temperature rises if it exceeds 0.8 ⁇ T A1 ° C, it is preferable to adjust so that the temperature of the steel plate 3 in the heating region 12 does not rise too much.
  • the temperature in the thickness direction of the steel plate 3 in the heating region 12 is avoided. Is preferably less than T M ° C. before contacting the surface-side rotating tool 1 passing through the heating region 12.
  • T M (° C.) is the melting point of the steel sheet 3 as the workpiece.
  • Heating zone depth D 100% of steel sheet thickness t
  • the depth D of the heating zone 12, the temperature T D in the thickness direction of the pressurized heat region 12 is defined by the maximum depth from 0.8 ⁇ T A1 ° C. or higher and a region surface of the steel plate 3 of the.
  • the depth D of the heating region 12 is preferably 50% or more of the thickness t of the steel plate 3, and ideally 100%.
  • a support having a hardness equal to or higher than the material to be joined on the other side is used. It is necessary to support the material to be bonded, and if the depth D of the heating region 12 exceeds 90% of the thickness t of the steel plate 3, the material to be bonded and the support may be fixed. However, in this embodiment, since the opposite side (the other side) of the heating region 12 is in a hollow state, there is a risk of sticking even if the depth D of the heating region 12 is 50 to 100% of the total thickness of the steel plate 3. There is no.
  • the friction stir welding apparatus includes a control unit 20.
  • the control means 20 controls the operation of the rotary tool and the heating means.
  • the control unit 20 may control operations of the rear heating unit 7 and the cooling unit 6.
  • the heating means 5 used in the pre-heat treatment process is not particularly limited, but is preferably a laser heating device.
  • a laser having a high energy density as a heat source, it is possible to more accurately control the preheat treatment process conditions, and it is possible to improve the joining workability without impairing the joint characteristics.
  • the joining conditions other than those described above are not particularly limited.
  • the moving speed of the heating means 5 used in the pre-heat treatment process may be approximately the same as the joining speed.
  • the laser output and beam diameter may be suitably set according to joining conditions.
  • the cooling means 6 is disposed behind the surface-side rotary tool 1 that moves in the joining direction.
  • the joint joint strength may be improved by providing the cooling means 6.
  • the joint portion 4 is naturally cooled, so that the strength of the joint joint cannot be sufficiently obtained when the hardenability of the steel plate 3 as the workpiece is low.
  • the cooling means 6 is provided at the rear side in the joining direction of the surface-side rotating tool 1 moving in the joining direction, the joint 4 of the steel plate 3 is cooled by the cooling means 6, and the cooling rate is appropriately controlled. The strength can be improved by quenching.
  • the specific cooling means 6, for example, it is preferable to use a cooling device that ejects an inert gas.
  • argon gas, helium gas, or the like can be used as the inert gas that is preferably 30 to 300 ° C./s in the range of 800 ° C. to 500 ° C., for example.
  • the rear heating means 7 for heating the rear portion adjacent to the surface-side rotating tool 1 is provided behind the surface-side rotating tool 1 in the joining direction, and the cooling rate is appropriately controlled to gradually cool. Can be suppressed.
  • the specific rear heating means 7 it is preferable to use, for example, a high-frequency induction heating or a heating device using a laser as a heat source.
  • the slow cooling rate is preferably 10 to 30 ° C./s in the range of 800 ° C. to 500 ° C., for example.
  • the rear heating means 7 may be provided behind the rotating tool moving in the joining direction and behind the cooling means 6, and the joined portion 4 of the steel plate 3 may be reheated by the rear heating means 7.
  • the cooling rate is preferably 30 to 300 ° C./s in the range of 800 ° C. to 500 ° C., for example, and the reheating temperature is preferably 550 to 650 ° C., for example.
  • a cooling means 6 is provided behind the front side rotating tool 1 moving in the joining direction and behind the rear heating means 7, and the joining portion 4 of the steel plate 3 is cooled by the cooling means 6. Good.
  • the cooling rate in this case is, for example, about 0 to 30 ° C./s in the range of 800 ° C. to 600 ° C. (gradual cooling range), and then 30 to 30 ° C. in the range of 600 ° C. to 400 ° C. (rapid cooling range). It is preferably about 300 ° C./s.
  • the rotational speed of the pair of rotary tools is set in the range of 100 to 1000 rpm, the torque of the pair of rotary tools is suppressed, and the joining speed is increased to 1000 mm / min or more.
  • the joining speed is increased from 500 mm / min to 1000 mm / min or more, it is preferable to suppress the torque of the pair of rotary tools to 90 N ⁇ m or less.
  • the joining speed is 500 mm / min or less, it is preferable to suppress the torque of the pair of rotary tools to 75 N ⁇ m or less. Thereby, the load of a pair of rotary tools can be eased, ensuring plastic fluidity.
  • general structural steel and carbon steel for example, JIS (Japanese Industrial Standards) G 3106 welded rolled steel, JIS G 4051 mechanical structural carbon Steel or the like can be used. It can also be applied to high-strength structural steel having a tensile strength of 800 MPa or more, and a strength of 85% or more of the tensile strength of the steel plate (base material), and further, a strength of 90% or more can be obtained at the joint 4.
  • Example 1 Friction stir welding was performed using a steel plate having a plate thickness of 1.6 mm and having a chemical composition and tensile strength shown in Table 1 below. The joint butting surfaces were joined by pressing a rotating tool from both the one side and the other side of the steel sheet according to the surface state of a so-called I-shaped groove and milling with no angle. Table 2 shows the welding conditions of the friction stir welding.
  • a rotary tool having a cross-sectional dimension shown in FIGS. 5 (1) to (4) was used.
  • the rotary tool used in Example 1 is a rotary tool whose surface is coated with titanium nitride (TiN) by physical vapor deposition (PVD) using tungsten carbide (WC) as a raw material. At the time of bonding, the bonded portion was shielded with argon gas to prevent surface oxidation.
  • the coefficient of dynamic friction between the surface of the rotating tool of WC having a TiN coating treatment on the surface and the steel sheet was 0.6 or less.
  • the dynamic friction coefficient between the tool material surface and the steel plate was measured by the following measurement method. Using a ball-on-disk friction and wear tester, a disk made of the target material was pressed against a steel ball having a diameter of 6 mm while rotating with a load of 5 N, and the test was performed at a rotational speed of 100 mm / s and a sliding distance of 300 m. The test was performed at room temperature and without lubrication.
  • the steel ball used in the test is a steel ball made of a material having a chemical component of SUJ2 defined in JIS G 4805 and processed as a steel ball for bearings.
  • the steel plate I in Table 1 Prior to the bonding, in order to confirm the heating region by preheating using a laser as a heat source, the steel plate I in Table 1 was subjected to laser irradiation under the irradiation conditions (laser moving speed, laser output, and beam diameter) shown in Table 3. Light was irradiated and the surface temperature was measured by thermography. Furthermore, the cross section of the laser irradiation part was observed, and the microstructure was observed with a nital etchant.
  • laser moving speed, laser output, and beam diameter shown in Table 3.
  • the region having the transformation point (T A1 ° C) or higher is darkest, and is less than the transformation point (T A1 ° C) existing outside, but a high hardness structure such as martensite in the base material is tempered. Since the region is etched relatively thin, the region where the transformation point (T A1 ° C) or higher, the tempering region below the transformation point (T A1 ° C), and the base material region can be distinguished. is there. Furthermore, from the knowledge of heat treatment of steel, it is known that the tempering region below the transformation point (T A1 ° C) coincides with the region of 0.8 x T A1 ° C or more and less than T A1 ° C.
  • the depth D 0 of the region where the transformation point (T A1 ° C) or higher and the depth of the region where the temperature becomes 0.8 ⁇ T A1 ° C or higher (of the heating region) Depth D) was measured.
  • the region of 0.8 ⁇ T A1 ° C or more was a circular shape with a diameter of 2.4 mm. Since the maximum diameter of the pin portion of the rotating tool used here is 4.0 mm, the area of the heating region in the irradiation condition A is equal to or less than the area of the maximum diameter portion of the pin portion of the rotating tool.
  • the region of 0.8 ⁇ T A1 ° C. or higher was a circular shape having a diameter of 2.0 mm. Therefore, similarly to the above, the area of the heating region in the irradiation condition B is equal to or smaller than the area of the maximum diameter portion of the pin portion of the rotary tool.
  • the region of 0.8 ⁇ T A1 ° C or higher was a circular shape having a diameter of 5.4 mm. Since the maximum diameter of the pin part of the rotary tool used here is 4.0 mm, the area of the heating region in the irradiation condition C exceeds the area of the maximum diameter part of the pin part of the rotary tool.
  • the region where the temperature is 0.8 ⁇ T A1 ° C or more has an elliptical diameter in which the laser moving direction is the major axis and the direction perpendicular to the laser moving direction is the minor axis, the major axis is 1.8 mm, and the minor axis is 1. It was 2 mm. Since the maximum diameter of the pin portion of the rotating tool used here is 4.0 mm, the area of the heating region in the irradiation condition D is equal to or less than the area of the maximum diameter portion of the pin portion of the rotating tool.
  • the region where the temperature is 0.8 ⁇ T A1 ° C. or more has an elliptical diameter in which the laser moving direction is the major axis and the direction perpendicular to the laser moving direction is the minor axis, the major axis is 2.3 mm, and the minor axis is 1. It was 9 mm. Therefore, similarly to the above, the area of the heating region under the irradiation condition E is equal to or smaller than the area of the maximum diameter portion of the pin portion of the rotary tool.
  • the depth of the region becomes T A1 ° C. or higher and the depth of the turned region D 0 and 0.8 ⁇ T A1 ° C. or higher
  • the depth (depth D of the heating region) was 1.60 mm and 1.60 mm, respectively, and regions having a temperature equal to or higher than T A1 ° C. were formed over the entire thickness of the steel sheet. Therefore, the depth D of the heating region, which is the depth of the region of 0.8 ⁇ T A1 ° C or higher, is 100% of the thickness t of the steel plate.
  • the depth D 0 of the region where T A1 ° C or higher and the depth of the region where 0.8 ⁇ T A1 ° C or higher are 0.47 mm and 0, respectively. .50 mm. Since the thickness t of the steel plate as the workpiece is 1.6 mm, the depth D of the heating region is about 31.3% of the thickness t of the steel plate.
  • the depth D 0 of the region where T A1 ° C or higher and the depth of 0.8 ⁇ T A1 ° C or higher are 0.28 mm and 0, respectively. .30 mm. Since the thickness t of the steel plate as the workpiece is 1.6 mm, the depth D of the heating region is about 18.8% of the thickness t of the steel plate.
  • the depth D 0 of the region where T A1 ° C. or higher and the depth of the region where 0.8 ⁇ T A1 ° C. or higher (depth D of the heating region) are 1.60 mm, 1 A region of .60 mm and T A1 ° C or higher was formed in the entire thickness of the steel sheet. Therefore, the depth D of the heating region, which is the depth of the region of 0.8 ⁇ T A1 ° C or higher, is 100% of the thickness t of the steel plate.
  • the depth D 0 of the region where T A1 ° C or higher and the depth of 0.8 ⁇ T A1 ° C or higher are 0.58 mm and 0, respectively. .63 mm. Since the thickness t of the steel plate as the workpiece is 1.6 mm, the depth D of the heating region is about 39.4% of the thickness t of the steel plate.
  • Table 5 shows preheating process conditions by laser irradiation performed before joining the workpieces
  • Table 6 shows process conditions performed after joining.
  • cooling by gas ejection was performed, and in the heating (and reheating), induction heating was performed.
  • Table 7 shows the measured value of the torque of the rotating tool when the joining is performed and the measured value of the tensile strength of the obtained joint.
  • the tensile strength of the joint joint is the result of taking a tensile test piece having the size of No. 1 test piece specified in JIS Z 3121 and conducting a tensile test. The greater the torque of the rotating tool, the lower the plastic fluidity and the more likely to cause defects.
  • Invention Examples 1 to 11 even when the joining speed was 400 mm / min, a joint strength of 90% or more of the tensile strength of the steel sheet as the base material was obtained.
  • the torques of the rotary tools on the front and back sides of Invention Examples 1 to 11 were all 72 N ⁇ m or less, and the plastic fluidity was also good.
  • Invention Examples 7 to 10 in which only cooling / reheating, cooling or reheating was performed after joining, a strength equivalent to the tensile strength of the base material was obtained.
  • Invention Example 11 in which reheating and cooling were performed after joining, a strength of 96% or more of the tensile strength of the base material was obtained.
  • the friction stir welding conditions of Comparative Examples 1 to 4 are conditions for joining by pressing a rotating tool from both one side and the other side of the steel sheet satisfying the scope of the present invention, and the preheating process conditions are the present invention. This is a condition that does not satisfy the range.
  • the torques of both rotary tools on the front side and the back side were larger than 75 N ⁇ m, and the plastic fluidity was inferior.
  • the friction stir welding condition of Comparative Example 5 is a condition for joining by pressing a rotating tool from one side of a steel sheet that does not satisfy the scope of the present invention, and the preheating process condition is a condition for satisfying the scope of the present invention. .
  • the torque of the rotary tool on the surface side was greater than 75 N ⁇ m, and the plastic fluidity was poor.
  • the friction stir welding conditions of Comparative Example 6 and Comparative Example 7 are conditions in which the rotary tool is pressed from both the one side and the other side of the steel sheet that satisfies the scope of the present invention, and the preheating process conditions are This is a condition that does not satisfy the scope of the present invention.
  • Comparative Example 6 and Comparative Example 7 unjoined portions remained and could not be joined. For this reason, in the comparative example 6 and the comparative example 7, measurement of rotating tool torque etc. is not performed.
  • the friction stir welding conditions of Comparative Example 8 are conditions in which the rotating tool is pressed from one side of the steel sheet that does not satisfy the scope of the present invention and the preheating process conditions do not satisfy the scope of the present invention. .
  • a joint strength of 90% or more of the tensile strength of the base material was obtained, but the torque of the rotary tool on the surface side was greater than 100 N ⁇ m, and the plastic fluidity was poor.
  • Friction stir welding was performed using a steel plate having a plate thickness of 1.6 mm and a chemical composition and tensile strength shown in Table 1 above.
  • Example 2 the rotary tool having the cross-sectional dimensions (shoulder diameter a: 12 mm, pin portion maximum diameter b: 4 mm, probe length c: 1.4 mm) shown in FIG. 5 was used.
  • the rotary tool used in Example 2 has a surface that is coated with titanium nitride (TiN) by physical vapor deposition (PVD) using tungsten carbide (WC) as a raw material without being coated with tungsten carbide (WC).
  • PVD physical vapor deposition
  • AlCrN aluminum nitride nitride
  • WC aluminum nitride nitride
  • CBN cubic boron nitride
  • the bonded portion was shielded with argon gas to prevent surface oxidation.
  • the coefficient of dynamic friction between the surface of the rotating tool and the steel sheet is 0.7 when tungsten carbide (WC) is not used as a raw material, and titanium nitride (TiN) is formed by physical vapor deposition (PVD) using tungsten carbide (WC) as a raw material.
  • PVD physical vapor deposition
  • tungsten carbide (WC) is made of aluminum nitride nitride (AlCrN)
  • 0.4 is made of cubic boron nitride (CBN). In the case of the above, it was 0.3.
  • the dynamic friction coefficient between the tool material surface and the steel plate was measured by the same measurement method as in Example 1.
  • Table 8 shows the preheating process conditions by laser irradiation performed before joining the workpieces.
  • WC is a rotating tool that is not coated with tungsten carbide (WC) as a material
  • titanium nitride (TiN) is coated by physical vapor deposition (PVD) with tungsten carbide (WC) as a material
  • PVD physical vapor deposition
  • WC + TiN as the rotary tool
  • WC + AlCrN as the rotary tool coated with aluminum chromium nitride (AlCrN) using tungsten carbide (WC) as the raw material
  • CBN cubic boron nitride
  • Example 2 the post-joining process was not performed.
  • “(AS)” and “(RS)” in the distance from the junction center line to the center of the heating region indicate that the center of the heating region is located on the advansing side and the retreating side from the junction center line, respectively.
  • Table 9 shows the measured values of the torque of the rotating tool and the measured values of the tensile strength of the obtained joints when bonding is performed.
  • the tensile strength of the joint joint is the result of taking a tensile test piece having the size of No. 1 test piece specified in JIS Z 3121 and conducting a tensile test. The greater the torque of the rotating tool, the lower the plastic fluidity and the more likely to cause defects.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un procédé et un dispositif de soudage par friction grâce auxquels des défauts d'écoulement plastique provoqués par un chauffage insuffisant d'un matériau à usiner sont efficacement éliminés, une résistance suffisante est obtenue, et une aptitude au façonnage de liaison est améliorée. Pendant le soudage par friction-malaxage d'un acier profilé : un outil de rotation est utilisé qui possède une matière première présentant un coefficient de frottement dynamique pour tôles d'acier qui est inférieur ou égal à 0,6 ; l'outil de rotation est disposé sur un côté de surface de la tôle d'acier et l'autre côté de surface de celle-ci ; et au moins 65 % de la surface d'une zone de chauffage devant être chauffée par le moyen de chauffage disposé à l'avant de l'outil de rotation est positionnée entre une ligne centrale de soudage et une ligne droite qui est parallèle à la ligne centrale de soudage et séparée vers un côté de retrait par une distance égale au diamètre maximal d'une section de broche de l'outil de rotation, ladite ligne centrale de soudage étant une ligne droite sur la surface de la tôle d'acier, qui passe par l'axe de rotation de l'outil de rotation et qui est parallèle à la direction de soudage.
PCT/JP2017/036093 2016-10-11 2017-10-04 Dispositif et procédé de soudage par friction-malaxage WO2018070317A1 (fr)

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WO2023037785A1 (fr) * 2021-09-13 2023-03-16 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage pour bande d'acier électromagnétique et procédé de fabrication de bande d'acier électromagnétique
WO2023037786A1 (fr) * 2021-09-13 2023-03-16 Ｊｆｅスチール株式会社 Joint soudé de bande d'acier électromagnétique, procédé de soudage par friction-malaxage et procédé de production d'une bande d'acier électromagnétique
WO2023100419A1 (fr) * 2021-11-30 2023-06-08 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage d'une bande d'acier électromagnétique, procédé de fabrication d'une bande d'acier électromagnétique, dispositif de soudage par friction-malaxage et dispositif de fabrication d'une bande d'acier électromagnétique
WO2023100420A1 (fr) * 2021-11-30 2023-06-08 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage pour bande d'acier électromagnétique et procédé de fabrication de bande d'acier électromagnétique
JP7347723B1 (ja) 2022-08-23 2023-09-20 Ｊｆｅスチール株式会社 電磁鋼帯の摩擦撹拌接合方法、電磁鋼帯の製造方法、摩擦撹拌接合装置および電磁鋼帯の製造装置
JP7347722B1 (ja) 2022-08-23 2023-09-20 Ｊｆｅスチール株式会社 電磁鋼帯の摩擦撹拌接合方法、電磁鋼帯の製造方法、摩擦撹拌接合装置および電磁鋼帯の製造装置
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WO2024042774A1 (fr) * 2022-08-23 2024-02-29 Ｊｆｅスチール株式会社 Procédé d'assemblage par friction-malaxage pour bande d'acier électromagnétique, procédé de fabrication de bande d'acier électromagnétique, dispositif d'assemblage par friction-malaxage et dispositif de fabrication de bande d'acier électromagnétique

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KR20200001727A (ko) * 2018-06-28 2020-01-07 선문대학교 산학협력단 이종 금속재료의 용접방법 및 용접장치
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WO2023037785A1 (fr) * 2021-09-13 2023-03-16 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage pour bande d'acier électromagnétique et procédé de fabrication de bande d'acier électromagnétique
WO2023037786A1 (fr) * 2021-09-13 2023-03-16 Ｊｆｅスチール株式会社 Joint soudé de bande d'acier électromagnétique, procédé de soudage par friction-malaxage et procédé de production d'une bande d'acier électromagnétique
WO2023100419A1 (fr) * 2021-11-30 2023-06-08 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage d'une bande d'acier électromagnétique, procédé de fabrication d'une bande d'acier électromagnétique, dispositif de soudage par friction-malaxage et dispositif de fabrication d'une bande d'acier électromagnétique
WO2023100420A1 (fr) * 2021-11-30 2023-06-08 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage pour bande d'acier électromagnétique et procédé de fabrication de bande d'acier électromagnétique
JP7347723B1 (ja) 2022-08-23 2023-09-20 Ｊｆｅスチール株式会社 電磁鋼帯の摩擦撹拌接合方法、電磁鋼帯の製造方法、摩擦撹拌接合装置および電磁鋼帯の製造装置
JP7347722B1 (ja) 2022-08-23 2023-09-20 Ｊｆｅスチール株式会社 電磁鋼帯の摩擦撹拌接合方法、電磁鋼帯の製造方法、摩擦撹拌接合装置および電磁鋼帯の製造装置
WO2024042773A1 (fr) * 2022-08-23 2024-02-29 Ｊｆｅスチール株式会社 Procédé de soudage par friction-malaxage de bande d'acier électromagnétique, procédé de fabrication de bande d'acier électromagnétique, dispositif de soudage par friction-malaxage et dispositif de fabrication de bande d'acier électromagnétique
WO2024042774A1 (fr) * 2022-08-23 2024-02-29 Ｊｆｅスチール株式会社 Procédé d'assemblage par friction-malaxage pour bande d'acier électromagnétique, procédé de fabrication de bande d'acier électromagnétique, dispositif d'assemblage par friction-malaxage et dispositif de fabrication de bande d'acier électromagnétique

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CN109803784B (zh) 2021-09-28
KR102181820B1 (ko) 2020-11-24
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CN109803784A (zh) 2019-05-24
KR20190039985A (ko) 2019-04-16

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