WO2022202631A1 - 摩擦接合用エレメント - Google Patents
摩擦接合用エレメント Download PDFInfo
- Publication number
- WO2022202631A1 WO2022202631A1 PCT/JP2022/012435 JP2022012435W WO2022202631A1 WO 2022202631 A1 WO2022202631 A1 WO 2022202631A1 JP 2022012435 W JP2022012435 W JP 2022012435W WO 2022202631 A1 WO2022202631 A1 WO 2022202631A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- mandrel
- joining
- friction
- upper plate
- Prior art date
Links
- 238000005304 joining Methods 0.000 title claims abstract description 60
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000011247 coating layer Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/025—Setting self-piercing rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/027—Setting rivets by friction heating
-
- 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
- B23K20/127—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 friction stir welding involving a mechanical connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
Definitions
- the present invention relates to a friction-joining element.
- the friction-joining element is press-fitted while rotating at high speed into a plate assembly composed of two or more metal plates using a high-strength steel plate as the upper plate, and the plate assembly is joined by friction welding. be.
- Patent Document 1 describes, for example, using an aluminum plate for the upper plate and using a steel plate for the lower plate that constitutes the plate assembly.
- a steel plate is applied to the upper plate, the plastic deformation of the upper plate is insufficient, so that the collar of the joining element (element) and the upper plate do not come into contact, and the element is attached to the upper plate. cannot be sufficiently fixed. As a result, it was sometimes difficult to achieve the joining of the boards.
- the present invention is intended to solve the above problems, and provides a friction-joining element capable of mechanically joining a plate set in which two or more metal plates having high-strength steel plates applied to the upper plate are superimposed. for the purpose.
- the friction-joining element and the upper plate can be engaged with each other.
- the friction-joining element can sufficiently fix the upper plate, and the above-described plate assembly can be joined by mechanical joining.
- a friction-joining element for mechanically joining a plate set in which two or more metal plates are superimposed using a high-strength steel plate for the upper plate comprises a mandrel having a total length adjusted to a length equal to or less than the total plate thickness of the plate set, and a collar on the upper portion of the mandrel, A friction-joining element having threads on the head-side side surface of the mandrel.
- the friction joining element of the present invention by fixing the friction joining element of the present invention and the plate set by screwing, even if the plate set is composed of two or more metal plates using a high-strength steel plate for the upper plate, , can achieve bonding by mechanical bonding. This makes it possible to provide a mechanically joined joint having good joint performance.
- FIG. 1 is a schematic diagram for explaining the state of joining by the friction-joining element of the present invention.
- FIG. 2 is a schematic diagram illustrating one embodiment of the friction-joining element of the present invention.
- FIG. 3 is a schematic diagram for explaining the state of joining by conventional elements.
- FIGS. 1 and 3 are schematic diagrams showing a state in which a plate assembly composed of two metal plates is joined by an element.
- FIG. 3 shows a conventional element, which does not have threads on the side of the mandrel.
- FIG. 1 shows a friction-joining element of the present invention (hereinafter sometimes referred to as "element"), and the friction-joining element of the present invention has a thread on the side surface of the mandrel.
- element a friction-joining element of the present invention
- symbol is attached
- reference numeral 1 is an element
- reference numeral 2 is a mandrel
- reference numeral 3 is a collar
- reference numeral 5 is a screw thread
- reference numeral 6 is a board assembly
- reference numeral 7 is an upper plate
- reference numeral 8 is a lower plate. 9 is the joint interface between the element and the lower plate.
- FIGS. 1 and 3 show a state in which a plate assembly 6 made up of two plate-like parts (an upper plate 7 and a lower plate 8) and an element 1 are joined.
- the upper plate 7 is the metal plate laminated on the top of the plate group 6
- the lower plate 8 is the metal plate laminated on the bottom of the plate group 6 .
- the upper plate 7 is a high-strength steel plate containing ultra-high tensile strength steel.
- "high strength” refers to tensile strength of 590 MPa or more.
- the tensile strength of the steel sheet is preferably 980 MPa or more and preferably 1470 MPa or less.
- the element 1 is brought into contact with the upper plate 7 of the plate-like component while being rotated by a joining device (not shown).
- the element 1 is pushed into the upper plate 7 by applying pressure.
- the upper plate 7 of the plate-like component is plasticized by frictional heat, and the mandrel 2 enters the upper plate 7 of the plate-like component.
- the process of friction bonding between the element 1 and the lower plate 8 is started.
- the side surface of the mandrel 2 is provided with a thread 5 continuously formed in the longitudinal direction of the mandrel. Accordingly, as the mandrel 2 enters the upper plate 7 of the plate-like component, the screw thread 5 and the upper plate 7 of the plate-like component are engaged with each other to fix the upper plate 7 of the plate-like component to the mandrel 2 . As a result, plastic deformation of the top plate 7 is sufficient, so that the collar 3 of the element 1 and the top plate 7 come into contact with each other.
- the mandrel 2 penetrates the upper plate 7 of the plate-shaped component and enters the lower plate 8, the tip of the mandrel 2 is connected to the lower plate 8 by friction welding, and is plastically deformed and pushed out in the joining process.
- the material of the upper plate 7 is pressed by a collar 3 provided on the upper part of the mandrel 2. - ⁇ As a result, the mechanical joining of the upper plate 7 and the lower plate 8 of the plate-like part can be achieved by the element 1 . Observing the cross section of the joint portion of the element of the present invention, as shown in FIG. A good bond is obtained.
- FIG. 2 is a schematic diagram illustrating one embodiment of an element of the invention.
- the element 1 of the invention comprises a mandrel 2 and a collar 3, the sides of the mandrel 2 being provided with threads 5.
- a plurality of screw threads are continuously formed in the thread 5 in the longitudinal direction of the mandrel.
- the element 1 is to be press-fitted into the plate assembly while being rotated at high speed to connect with the plate assembly.
- the element 1 is joined to the upper plate of the plate assembly by means of threads provided on the side surface of the mandrel, and is friction-joined to the lower plate of the plate assembly at the tip of the mandrel.
- the mandrel 2 is provided in the axial center of the element 1 and formed in a cylindrical shape.
- the tip of the mandrel 2 is formed in, for example, a flat shape, a tapered shape with a slope so that the tip protrudes, or a drill shape with a cutting edge.
- the total length L of the mandrel 2 is adjusted to a length equal to or less than the length of the total plate thickness of the plate set (total value of the total plate thickness of the plate set 6).
- the upper limit of the total length of the mandrel 2 is set to be the same as the length of the total plate thickness of the plate set 6, or from the total plate thickness of the plate set 6, the lowest layer (lowest) in the plate set
- the value excludes the plate thickness of the metal plate (for example, the lower plate 8 in the example shown in FIG. 1) arranged in the .
- the total length L of the mandrel 2 may be any length that enables friction bonding between the tip of the mandrel and the lower plate 8 .
- the total length L (mm) of the mandrel 2 is preferably 10 mm or less, more preferably 8 mm or less.
- the total length L of the mandrel 2 is preferably 1 mm or more.
- a thread 5 is provided on the side surface of the mandrel 2.
- the thread 5 is provided on the side surface of the mandrel 2 on the head side (upper side) (that is, on the head side of the element 1).
- three rows of threads are provided near the head side of the mandrel 2 .
- the upper plate 7 can be fixed to the mandrel 2 by engaging the screw threads 5 with the upper plate 7 of the plate-like component. Therefore, as long as this effect can be obtained, the thread shape may be any shape.
- the number of screw threads can be appropriately adjusted in consideration of the material and strength of the metal plates forming the plate assembly 6, the total number of metal plates forming the plate assembly, and the like.
- the coating layer is not particularly specified as long as it has the desired performance as a wear-resistant material.
- Examples include WC, TiN, other ceramics, heat-resistant coating layers, and coating layers obtained by hardening treatments such as nitriding.
- the thickness of the coating layer can also be appropriately adjusted according to the desired performance.
- the collar 3 is provided on the top of the mandrel 2, that is, on the head of the element 1. Thereby, the material of the top plate 7 extruded by the plastic flow of the joining process can be restrained by the collar 3 .
- the shape of the collar 3 may be, for example, a wafer shape or a truss shape.
- the element 1 of the present invention plasticizes the metal plates (upper plate 7 and lower plate 8) by frictional heat generated when the element 1 is pushed into the plate set 6 while rotating, as shown in FIG.
- the upper plate 7 of the plate assembly 6 and the screw thread 5 provided on the side surface of the mandrel 2 are fixed in a mutually engaged state, and the lower plate 8 of the plate assembly 6 rubs against the tip of the mandrel 2. Since they are bonded, bonding by mechanical bonding can be achieved.
- the effect of strengthening the fixation of the plate-like parts (the upper plate 7 and the lower plate 8) can be obtained.
- the plate assembly 6 may be made up of three or more metal plates.
- the uppermost plate 7 in the plate assembly 6 composed of two or more metal plates is a steel plate (high-strength steel plate) containing ultra-high tensile strength.
- the thread 5 preferably has the following shape.
- the thread 5 is provided in the side area of the mandrel 2 with respect to the length direction of the mandrel 2 .
- the metal plate of the upper plate 7 and the screw thread 5 can form a biting portion.
- the number of screw threads 5 is provided within the range of 2 to 20 rows in the side area. Thereby, the biting portion can be formed.
- the number of screw threads 5 is preferably three or more, and preferably ten or less.
- the distance (pitch) between adjacent screw threads 5 is preferably in the range of 100 to 1000 ⁇ m.
- the “distance between adjacent screw threads” refers to the distance between the tops of adjacent screw threads in the length direction of the mandrel 2 . If the distance is less than 100 ⁇ m, it will be difficult for the plate material to get caught between the screw threads, and as a result, it will not be possible to obtain a portion where the metal plate (upper plate 7) gets caught. On the other hand, if the distance exceeds 1000 ⁇ m, the contact area between the element and the metal plate (upper plate 7) at the biting portion becomes small, and as a result, the above effect cannot be obtained.
- the distance between adjacent threads 5 is preferably in the range of 100-500 ⁇ m.
- the inclination angle ⁇ 1 of the thread 5 is preferably 10 to 180°.
- the “thread inclination angle ⁇ 1 ” refers to the angle of the thread crest point. If the angle of inclination ⁇ 1 is less than 10°, the width of the thread becomes narrow, and as a result, the object of the present invention cannot be achieved. On the other hand, if the inclination angle ⁇ 1 exceeds 180°, there is no thread or the ridges and valleys are reversed.
- the inclination angle ⁇ 1 is preferably 30° or more and preferably 90° or less.
- the tip of mandrel 2 is formed in the shape described above.
- the example shown in FIG. 2 has a tapered shape in which the tip portion protrudes.
- the tapered angle ⁇ 2 is preferably 120 to 180°.
- the collar 3 serves to restrain the material of the top plate 7 extruded by the plastic flow of the joining process. In order to obtain such an action, it is necessary to press the top plate 7 with the collar 3 while providing a space for storing the metal after the plastic flow. Therefore, as shown in FIG. 2, it is preferable to form an umbrella shape.
- the thickness of the coating layer is preferably 1 to 100 ⁇ m. If the thickness is less than 1 ⁇ m, the coating layer may disappear due to abrasion, and as a result, the effect of the coating may not be obtained. On the other hand, if the thickness exceeds 100 ⁇ m, it is not realistic from the viewpoint of cost.
- the thickness of the coating layer is more preferably 2 ⁇ m or more and more preferably 10 ⁇ m or less.
- 590 MPa class means that the lower limit of tensile strength is 590 MPa
- 980 MPa class means that the lower limit of tensile strength is 980 MPa
- 1180 MPa class means that the lower limit of tensile strength is 1180 MPa
- 1470 MPa class means that the lower limit of tensile strength was set to 1470 MPa.
- the plate thickness h (mm) of each test material was the thickness shown in Tables 1-1 and 1-2. In this example, the plate sets shown in Tables 1-1 and 1-2 were used.
- the tip of the mandrel 2 shown in FIG. 1 was appropriately set so that the tapered angle ⁇ 2 was within the range of 120 to 180° (see FIG. 2).
- the "heat-resistant film” shown in Table 2 is a coating layer formed by PVD treatment of a heat-resistant film.
- the joining method of the above-described plate assembly is performed using a joining method known as "Friction Element Welding (FEW)" (see, for example, US Pat. No. 3,477,115). rice field.
- Friction Element Welding FEW
- Table 2 The joining conditions were the conditions shown in Table 2.
- ⁇ Tensile strength test> For the tensile strength test, a cross tension test (JISZ3137) was performed using the obtained joints. The cross tension test was performed on those joints evaluated as good in appearance in the above appearance observation. Table 2 shows the obtained joint strength (kN).
- the evaluation of the joining state was any of A to C, and joining by mechanical joining was achieved. It was also found that the obtained joints (excluding Nos. 12 and 16 in Table 2) had good joint performance. On the other hand, when the conventional element was used for joining, the evaluation of the joining state was D in all cases, and joining by mechanical joining could not be achieved.
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- Connection Of Plates (AREA)
Abstract
Description
特許文献1に開示される技術は、接合要素(エレメント)のマンドレル部先端が、摩擦溶接により下板と接続し、接合プロセスにおいて塑性変形して押し出された上板材料をエレメント頭部のカラーが押えることにより、板組の接合を達成するというものである。
[1] 上板に高強度鋼板を用いた2枚以上の金属板を重ね合わせた板組を、機械的接合する摩擦接合用エレメントであって、
前記摩擦接合用エレメントは、前記板組の全板厚以下の長さに調整された全長を有するマンドレルと、該マンドレルの上部にカラーを備え、
前記マンドレルの頭部側の側面にネジ山を有する、摩擦接合用エレメント。
[2] 前記ネジ山は、ネジ山の表面にコーティング層を有する、[1]に記載の摩擦接合用エレメント。
[3] 前記マンドレルの側面領域には2列以上20列以下の前記ネジ山を設け、隣り合う前記ネジ山間の距離を100~1000μmの範囲とする、[1]または[2]に記載の摩擦接合用エレメント。
図2は、本発明のエレメントの一実施形態を説明する概要図である。図2に示すように、本発明のエレメント1は、マンドレル2とカラー3を有し、該マンドレル2の側面にネジ山5を設ける。ネジ山5は、マンドレルの長さ方向に対して、複数のネジ山が連続して形成される。エレメント1は、高速で回転させながら板組に圧入し、板組と接続するためのものである。上述のように、エレメント1は、板組の上板とはマンドレル側面に設けたネジ山で接合され、板組の下板とはマンドレル先端で摩擦接合される。
マンドレル2の全長L(mm)は、10mm以下とすることが好ましく、好ましくは8mm以下とすることがより好ましい。マンドレル2の全長Lは、1mm以上とすることが好ましい。
なお、図1に示す例では、2枚の金属板から構成される板組6を示しているが、3枚以上の金属板から構成される板組であっても良い。2枚以上の金属板から構成される板組6における最上層の上板7は、超ハイテンを含む鋼板(高強度鋼板)とする。
〔ネジ山〕
上述したように、本発明では、マンドレル2の側面にネジ山5を設けることが重要である。ネジ山5は、以下の形状とすることが好ましい。
マンドレル2の先端は、上述の形状に形成される。図2に示す例では、上記の先端部分が突出するテーパ状である。該テーパ状の角度θ2は120~180°とすることが好ましい。
上述のように、カラー3は、接合プロセスの塑性流動によって押し出された上板7の材料を抑える働きをする。このような作用を得るため、カラー3は塑性流動後の金属を格納する空間を設けつつ、かつ、カラー3によって上板7を押え付ける必要がある。そのため、図2に示すように、傘状の形状に形成することが好ましい。
コーティング層の厚さは、1~100μmとすることが好ましい。該厚さが1μm未満の場合、摩耗によりコーティング層が消滅し、その結果、コーティングの効果が得られない恐れがある。一方、該厚さが100μm超えの場合、コストの観点から現実的ではない。
コーティング層の厚さは、より好ましくは2μm以上であり、より好ましくは10μm以下である。
ここで、「590MPa級」とは引張強度の下限が590MPaとし、「980MPa級」とは引張強度の下限が980MPaとし、「1180MPa級」とは引張強度の下限が1180MPaとし、「1470MPa級」とは引張強度の下限が1470MPaとした。各供試材の板厚h(mm)は、表1-1および表1-2に示す厚さとした。本実施例では、表1-1および表1-2に示す板組を用いた。
外観観察は、得られた継手を目視で観察して行った。さらに接合部分中央で断面出しを行い、断面の観察を行った。継手の外観の評価は、エレメントが上板を貫通し、かつ下板と摩擦接合されている場合に、継手外観は「良好」と評価し、符号「○」を付与した。それ以外の場合は、継手外観は「不良」と評価し、符号「×」を付与した。得られた結果を表2に示した。
引張強度試験は、得られた継手を用いて、十字引張試験(JISZ3137)を行った。十字引張試験は、上記の外観観察において継手外観が良好と評価されたものを対象とした。得られた継手強度(kN)を表2に示した。
上述の結果を用いて、以下の基準で接合状態を評価した。
継手の外観評価が「○」で、かつ継手強度が「6kN以上」の場合を「A」と評価した。継手の外観評価が「○」で、かつ継手強度が「3kN以上6kN未満」の場合を「B」と評価した。継手の外観評価が「○」で、かつ継手強度が「3kN未満」の場合を「C」と評価した。継手の外観評価が「×」の場合は、「D」と評価した。得られた接合状態の評価結果を表2に示した。
2 マンドレル
3 カラー
5 ネジ山
6 板組
7 上板
8 下板
9 エレメントと下板の接合部界面
Claims (3)
- 上板に高強度鋼板を用いた2枚以上の金属板を重ね合わせた板組を、機械的接合する摩擦接合用エレメントであって、
前記摩擦接合用エレメントは、前記板組の全板厚以下の長さに調整された全長を有するマンドレルと、該マンドレルの上部にカラーを備え、
前記マンドレルの頭部側の側面にネジ山を有する、摩擦接合用エレメント。 - 前記ネジ山は、ネジ山の表面にコーティング層を有する、請求項1に記載の摩擦接合用エレメント。
- 前記マンドレルの側面領域には2列以上20列以下の前記ネジ山を設け、隣り合う前記ネジ山間の距離を100~1000μmの範囲とする、請求項1または2に記載の摩擦接合用エレメント。
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KR1020237030712A KR20230137468A (ko) | 2021-03-23 | 2022-03-17 | 마찰 접합용 엘리먼트 |
EP22775419.9A EP4275828A1 (en) | 2021-03-23 | 2022-03-17 | Friction joining element |
CN202280021110.9A CN116981533A (zh) | 2021-03-23 | 2022-03-17 | 摩擦接合用元件 |
US18/282,898 US20240167492A1 (en) | 2021-03-23 | 2022-03-17 | Friction joining element |
JP2022537442A JP7327678B2 (ja) | 2021-03-23 | 2022-03-17 | 摩擦接合用エレメント |
MX2023011091A MX2023011091A (es) | 2021-03-23 | 2022-03-17 | Elemento de union por friccion. |
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JP2018504281A (ja) * | 2015-02-05 | 2018-02-15 | エジョット ゲーエムベーハー ウント コンパニー カーゲー | 摩擦溶接接続を形成するための接続部材 |
JP2019532228A (ja) * | 2016-08-19 | 2019-11-07 | エーヨット ゲーエムベーハー ウント コー カーゲー | カバー層のプラズマジェットの予穿孔による、少なくとも2つの部材層を連結するための方法、連結装置及び連結構造 |
JP2020159488A (ja) * | 2019-03-27 | 2020-10-01 | 日本製鉄株式会社 | 重ね接合構造、及び自動車骨格部品 |
JP2021504147A (ja) * | 2017-12-01 | 2021-02-15 | アルノルト ウムフォルムテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト | 少なくとも2つの構成要素を分離不能に接続するための接続エレメント及び複合配置 |
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- 2022-03-17 JP JP2022537442A patent/JP7327678B2/ja active Active
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- 2022-03-17 WO PCT/JP2022/012435 patent/WO2022202631A1/ja active Application Filing
- 2022-03-17 KR KR1020237030712A patent/KR20230137468A/ko unknown
- 2022-03-17 CN CN202280021110.9A patent/CN116981533A/zh active Pending
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JP7327678B2 (ja) | 2023-08-16 |
US20240167492A1 (en) | 2024-05-23 |
CN116981533A (zh) | 2023-10-31 |
KR20230137468A (ko) | 2023-10-04 |
EP4275828A1 (en) | 2023-11-15 |
JPWO2022202631A1 (ja) | 2022-09-29 |
MX2023011091A (es) | 2023-10-02 |
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