WO2023199674A1 - Structure de raccordement pour sections façonnées d'aluminium - Google Patents

Structure de raccordement pour sections façonnées d'aluminium Download PDF

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Publication number
WO2023199674A1
WO2023199674A1 PCT/JP2023/009605 JP2023009605W WO2023199674A1 WO 2023199674 A1 WO2023199674 A1 WO 2023199674A1 JP 2023009605 W JP2023009605 W JP 2023009605W WO 2023199674 A1 WO2023199674 A1 WO 2023199674A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum
fiber reinforced
carbon fiber
reinforced resin
sleeve
Prior art date
Application number
PCT/JP2023/009605
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English (en)
Japanese (ja)
Inventor
貴弘 山口
真一 寺田
太河 佐藤
慎也 宮▲崎▼
晃久 中澤
航輔 柴田
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株式会社Lixil
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Lixil filed Critical 株式会社Lixil
Publication of WO2023199674A1 publication Critical patent/WO2023199674A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/20—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using bayonet connections

Definitions

  • the present disclosure relates to a connection structure for aluminum shapes.
  • metal parts such as aluminum and carbon fiber reinforced resin (CFRP). Since the carbon contained in the carbon fiber reinforced resin is conductive, glass fiber reinforcement is placed between the aluminum member and the carbon fiber reinforced resin to prevent corrosion of the aluminum parts that come into contact with the carbon fiber reinforced resin. It has been proposed to arrange a non-conductive sheet such as resin.
  • CFRP carbon fiber reinforced resin
  • the present disclosure provides a pair of aluminum profiles having a hollow part and connected to each other, a sleeve provided at the connection part of the pair of aluminum profiles and inserted into the hollow part, and a sleeve disposed on the surface of the sleeve. and a carbon fiber reinforced resin member, wherein an alumite film or a boehmite film is provided on the inner circumferential surface of the pair of aluminum shapes in the connecting portion.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.
  • the arch 10 of this embodiment is a frame of an aluminum decorative member used for decorating a space.
  • the arch 10 includes a connecting structure 1 of aluminum shapes formed by connecting a pair of aluminum shapes against each other, and also includes struts 2, girders 3, and sleeves 4.
  • the struts 2 are arranged to face one and the other of the left and right sides of the arch 10 when viewed from the front.
  • the support column 2 is installed so as to extend in the vertical direction from an installation surface such as the ground.
  • the support column 2 is a long aluminum member that is hollow inside and has a hollow structure with a substantially rectangular cross section. Although the height dimension of the support column 2 is not limited, it has a length of about 2.5 m, for example.
  • the girder 3 connects the upper ends of the pillars 2 and is arranged to extend in the left-right direction when the arch 10 is viewed from the front. Although the length of the girder 3 is not limited, it has a length of about 10 m, for example.
  • the spar 3 is constructed by connecting a pair of spar bodies 31 as aluminum profiles, and includes the spar bodies 31, a connecting portion 32, and a sleeve 4.
  • the girder main body 31 is an elongated aluminum member that is hollow inside and has a hollow structure with a substantially square cross section.
  • the spar bodies 31 are members that form one spar 3 by connecting two spar bodies 31, and each spar body 31 has the same cross-sectional shape.
  • the lengths of the girder bodies 31 to be connected may be different, and may be, for example, 4 m and 6 m, although not limited thereto.
  • the girder main body 31 has a hollow portion 30, a girder upper surface portion 311, a girder lower surface portion 312, and a pair of girder side portions 313.
  • the hollow portion 30 is a space inside the spar body 31 and extends from one end of the spar body 31 in the longitudinal direction to the other end.
  • the girder upper surface portion 311 is a flat surface that is approximately rectangular in plan view. The width of the girder upper surface portion 311 in the transverse direction is, for example, about 15 cm.
  • the girder lower surface portion 312 is a flat surface that is substantially rectangular in plan view, and is disposed below the girder upper surface portion 311 . The width of the girder lower surface portion 312 in the transverse direction is, for example, about 15 cm.
  • the girder side surface portion 313 is a flat surface that connects the girder upper surface portion 311 and the girder lower surface portion 312. As shown in FIG.
  • the girder side surface portion 313 extends downward from the end of the girder upper surface portion 311 beyond the end of the girder lower surface portion 312, and is disposed so as to protrude downward from the lower end of the girder lower surface portion 312 in cross-sectional view. has been done.
  • the width of the girder side portion 313 in the transverse direction is, for example, about 15 cm.
  • An alumite film 33 or a boehmite film 34 formed by electrode treatment or hydrothermal treatment is provided on the inner circumferential surfaces 311a, 312a of the girder upper surface portion 311 and the girder lower surface portion 312, that is, the surfaces facing the hollow portion 30 side. .
  • the alumite film 33 is a film that is produced on the surface of aluminum by immersing the aluminum profile forming the girder body 31 in an electrolytic solution and passing an electric current through the electrolytic solution.
  • the boehmite film 34 is a film that is generated on the surface of aluminum by immersing the aluminum profile forming the girder body 31 in hot water of 75 degrees or higher.
  • the alumite coating 33 or the boehmite coating 34 may be formed on the entire inner circumferential surface of the hollow portion 30, but the alumite coating 33 or the boehmite coating 34 may be formed on the inner circumferential surface of a portion where at least a pair of girder bodies 31 are butted and connected, that is, as described below. It is sufficient that it is formed on the inner circumferential surface of the girder body 31 in the connecting portion 32.
  • the connecting portion 32 is a portion where the ends of one spar main body 31a and the other spar main body 31b are connected.
  • the connecting portion 32 refers to an area where the ends of adjacent girder bodies 31a, 31b are butted together, and a sleeve 4, which will be described below, is inserted into a hollow portion 30 inside the girder bodies 31a, 31b.
  • the sleeve 4 is provided at the connecting portion 32 and inserted through the hollow portions 30 of the two girder bodies 31a and 31b.
  • the sleeve 4 is arranged to increase the strength of the portion where the girder bodies 31 are connected.
  • the sleeve 4 is an elongated aluminum member that is hollow inside and has a hollow structure with a substantially rectangular cross section.
  • the length of the sleeve 4 is shorter than the length of the spar body 31, and may be, for example, 2 m, although not limited thereto.
  • the sleeve 4 is arranged such that its longitudinal center portion is located at adjacent ends of the two spar bodies 31a, 31b, and is fixed to the spar bodies 31a, 31b with screws. As shown in FIG.
  • the sleeve 4 has an upper surface portion 41, a lower surface portion 42, a pair of side surfaces 43, a sleeve hollow portion 40, and a carbon fiber reinforced resin member 5.
  • the sleeve hollow portion 40 is a space inside the sleeve 4 and extends from one end to the other end in the longitudinal direction.
  • the upper surface portion 41 is a flat surface that extends to the upper surface of the aluminum profile when installed within the girder body 31.
  • the upper surface portion 41 has a recess plane 41a and an end plane 41b.
  • the end planes 41b are planes that are arranged at both ends in the width direction of the sleeve 4 in a cross-sectional view and extend from the ends in the width direction toward the center.
  • the recessed portion flat surface 41a is recessed compared to the end portion flat surface 41b so as to be located slightly closer to the sleeve hollow portion 40 than the end portion flat surface 41b.
  • the height of the concave plane 41a is about 2 to 3 mm.
  • the lower surface portion 42 has a shape symmetrical to the upper surface portion 41, and includes a recessed flat surface 42a and an end flat surface 42b.
  • the end planes 42b are planes that are arranged at both ends in the width direction of the sleeve 4 in a cross-sectional view and extend from the ends in the width direction toward the center.
  • the recess plane 42a is recessed compared to the end plane 42b so that it is located slightly closer to the sleeve hollow part 40 than the end plane 42b.
  • the height of the concave plane 42a is about 2 to 3 mm.
  • the pair of side surfaces 43 connects the boundary between the end plane 41b and the recess plane 41a in the upper surface 41 and the boundary between the end plane 42b and the recess plane 42a in the lower surface 42. It is a flat surface that extends in the vertical direction when placed within 31.
  • the carbon fiber reinforced resin member 5 is a sheet-shaped member made of carbon fiber reinforced plastics, which is a resin material mixed with carbon fibers.
  • the carbon fiber-reinforced resin member 5 is bonded to the concave plane 41a of the upper surface portion 41 and the concave plane 42a of the lower surface portion 42 using an adhesive 51.
  • the surface of the carbon fiber reinforced resin member 5 is located at approximately the same height as the end planes 41b, 42b of the sleeve 4.
  • the dimensions of the carbon fiber reinforced resin member 5 are smaller than the upper surface portion 41 or the lower surface portion 42 of the sleeve 4.
  • the sleeve 4 described above is placed inside the hollow part 30 of the spar main body 31. At that time, a gap G of 2.0 mm or less is formed between the surface of the carbon fiber reinforced resin member 5 and the inner peripheral surfaces 311a and 312a of the spar upper surface 311 and spar lower surface 312 in the spar main body 31. There is.
  • Table 1 shows the test results that verified the presence or absence of electrolytic corrosion when an alumite film and a boehmite film were formed on the inner peripheral surface of an aluminum plate and when they were not formed.
  • extruded molded materials of 6063 aluminum alloy were used as test products.
  • the dimensions of the test article are 100 mm in the longitudinal direction, 30 mm in the transverse direction, and 2 mm in thickness.
  • the dimensions of the carbon fiber reinforced resin plate are 100 mm in the longitudinal direction, 30 mm in the transverse direction, and 2 mm in thickness.
  • boehmite films were formed on test products.
  • an aluminum plate was immersed in hot water at 80 degrees.
  • Example 1 was immersed for 5 minutes, and Example 2 was immersed for 10 minutes.
  • Example 3 an alumite film was formed on a test product.
  • the test article was etched for 5 minutes in a 50 degree sodium hydroxide aqueous solution to remove the natural oxide film formed on the surface of the test article. Thereafter, the test piece was immersed in a 15% sulfuric acid aqueous solution and anodized at a current density of 100 A/m 2 for 5 minutes.
  • Comparative Example 1 before conducting the test, the test article was etched for 5 minutes in a 5% aqueous sodium hydroxide solution at 50 degrees Celsius to remove the natural oxide film that had formed on the surface of the test article.
  • Example 1 to Comparative Example 2 A single test product in which the test products treated in each of Examples 1 to Comparative Example 2 were placed alone without being adjacent to a carbon fiber reinforced resin plate, and a test product treated in Examples 1 to Comparative Example 2 and After salt water spraying, the appearance of the test piece, which was made by integrating carbon fiber reinforced resin plates with a clearance of 2.0 mm, was compared and visually evaluated.
  • Examples 1 to Comparative Examples 2 when the corrosion state was the same as that of the test sample alone, it was marked as ⁇ . A mark of " ⁇ " was given when corrosion was accelerated compared to a single test specimen placed not adjacent to the carbon fiber reinforced resin plate.
  • Example 2 the corrosion current density of the aluminum plate having the boehmite film was kept low.
  • the appearance of Examples 1 and 2 after being sprayed with salt water was in a state of corrosion comparable to that of the single test product placed not adjacent to the carbon fiber reinforced resin plate.
  • the boehmite film was thicker in Example 2, which had a longer immersion time in hot water, and the corrosion current density was lower in Example 2, which had a thicker film.
  • Example 3 the aluminum plate with the alumite film had a lower corrosion current density than Examples 1 and 2.
  • the appearance of Example 3 after being sprayed with salt water was in a state of corrosion comparable to that of the single test sample placed not adjacent to the carbon fiber reinforced resin plate.
  • the resulting film was thinner than Examples 1 and 2.
  • Comparative Examples 1 and 2 the corrosion current density was high and the current flowed easily. As for the appearance after salt water spraying, corrosion was accelerated in Comparative Examples 1 and 2 compared to the test products placed not adjacent to the carbon fiber reinforced resin plate.
  • a connecting structure 1 of aluminum shapes is provided in the girder bodies 31, which are a pair of aluminum shapes having a hollow part 30 and are butt-connected to each other, and the connecting part 32 of the pair of girder bodies 31, and inserted into the hollow part 30.
  • the carbon fiber reinforced resin member 5 is arranged on the surface of the sleeve 4.
  • An alumite film 33 or a boehmite film 34 was provided on the inner peripheral surfaces of the pair of girder bodies 31 in the connecting portion 32.
  • a gap of 2.0 mm or less is formed between the carbon fiber reinforced resin member 5 and the inner peripheral surfaces 311a and 312a. Even if a gap G of 2.0 mm or less is formed between the carbon fiber reinforced resin member 5 and the inner peripheral surfaces 311a, 312a, the alumite film 33 or boehmite film is provided on the inner peripheral surfaces 311a, 312a. , electrolytic corrosion of the girder body 31 is prevented.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'une structure de raccordement pour des sections façonnées d'aluminium qui peut empêcher la corrosion des sections façonnées d'aluminium agencées à proximité d'une résine renforcée par des fibres de carbone. Une structure de raccordement 1 pour des sections façonnées d'aluminium comprend une paire de sections façonnées d'aluminium 31 qui ont une partie creuse 30 et sont raccordées bout à bout l'une à l'autre, un manchon 4 qui est disposé au niveau d'une partie de raccordement 32 de la paire de sections façonnées d'aluminium 31 et inséré dans la partie creuse 30, et un élément en résine renforcée par des fibres de carbone 5 agencé sur la surface du manchon 4, un film d'alumite 33 ou un film de boehmite 34 étant disposé sur les surfaces périphériques internes 311a et 312a de la paire de sections façonnées d'aluminium 31 dans la partie de raccordement 32.
PCT/JP2023/009605 2022-04-13 2023-03-13 Structure de raccordement pour sections façonnées d'aluminium WO2023199674A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-066502 2022-04-13
JP2022066502A JP2023156872A (ja) 2022-04-13 2022-04-13 アルミ型材の連結構造

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WO2023199674A1 true WO2023199674A1 (fr) 2023-10-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02127807U (fr) * 1989-03-31 1990-10-22
JP2019137205A (ja) * 2018-02-09 2019-08-22 藤倉コンポジット株式会社 オール
JP2021151746A (ja) * 2020-03-24 2021-09-30 新東工業株式会社 複合部材の製造方法、及び複合部材

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02127807U (fr) * 1989-03-31 1990-10-22
JP2019137205A (ja) * 2018-02-09 2019-08-22 藤倉コンポジット株式会社 オール
JP2021151746A (ja) * 2020-03-24 2021-09-30 新東工業株式会社 複合部材の製造方法、及び複合部材

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