JPH10140264A - Production of fiber reinforced metallic structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for producing a fiber reinforced metallic structure capable of easily producing a large-sized structure. SOLUTION: This process consists in producing the fiber reinforced metallic structure by a filament winding method. In such a case, at the time of using fibers previously coated with a metal and winding these fibers on a base material, the metal is thermally fused by irradiating the winding point thereof with a laser or metallic powder or metallic foil is supplied to the winding point of the fibers to the base material and is melted under heating by irradiating this point with the laser, by which the metallic powder or the metallic foil is integrated on the base material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber-reinforced metal structure suitable as a structure requiring light weight and high strength.

[0002]

2. Description of the Related Art A fiber reinforced metal (FRM) structure in which a matrix metal is reinforced with reinforcing fibers has a relatively light weight and a high strength, and is suitable for various pressure vessels, pipes for structural materials, turbine blades, and the like. It is something. Conventional FRM
11 shows a fiber laminate 30 in which reinforcing fibers are preliminarily laminated as shown in FIG. 11 (carbon fibers are used in the example of FIG. 11).
Is placed in a pressure-resistant and heat-resistant container 29, and the molten metal 23 is injected under pressure to be impregnated.

[0003]

The conventional method as described above has a drawback that it is difficult to produce a pressure vessel and a fiber laminate for producing a large product, and only a small product material can be produced. there were. The present invention has been made in view of the above circumstances of the related art, and aims to provide a method of manufacturing a fiber-reinforced metal structure capable of easily manufacturing a large-sized structure.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a method of manufacturing a fiber-reinforced metal structure by a filament winding method, wherein a fiber coated with metal in advance is used, and when the fiber is wound around a substrate, the winding point is determined. A method for manufacturing a fiber-reinforced metal structure and a method for manufacturing a fiber-reinforced metal structure by a filament winding method, wherein the metal is heated and melted by irradiating a laser, and integrated on a substrate. A method for producing a fiber-reinforced metal structure, characterized in that a metal powder or a metal foil is supplied and melted while irradiating a laser to a winding point around a substrate and heated, and integrated on the substrate. .

[0005] In the above-mentioned method in which a metal powder is supplied and melted while being heated by irradiating a laser to a winding point of the fiber around a base material and integrated on the base material, the fiber coated with a metal in advance is used as the fiber. Can also be used.
Further, as the fiber coated with the metal in advance,
A fiber in which a metal powder is adhered or a fiber in which a metal foil is wound using a fiber or resin in which a metal surface is directly coated with a metal as a binder can be suitably used.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the case of producing a fiber-reinforced metal structure by the method of the present invention, a reinforcing fiber and a matrix metal used in the usual production of FRM are used in an appropriate combination. be able to. Examples of reinforcing fibers include carbon fiber, boron fiber,
Metal fiber such as aluminum, or alumina fiber,
Ceramic fibers such as silicon carbide fibers can be mentioned, and as the matrix metal, any metal depending on various structures, for example, aluminum, titanium, magnesium,
Metals such as copper can be used.

The method of the present invention is characterized in that reinforcing fibers are wound together with a molten metal on a substrate by a filament winding method and integrated. When fabricating a structure composed only of fiber reinforced metal (FRM), a mandrel (winding type) made of a material such as ceramic that does not form a solid solution with metal as a winding base material
Use In addition, by using an internal structure made of the same metal as the metal constituting the FRM or a metal which easily dissolves with this metal as a base material, a structure having a metal inside and a surface made of FRM is manufactured. can do.

[0008] As a method of winding the reinforcing fiber together with the molten metal around the base material, a fiber coated with a metal in advance is used, and when winding the fiber around the base material, the winding point is irradiated with a laser to irradiate the metal. Heated and melted, using a metal-coated fiber or uncoated fiber as a method or fiber to be integrated on the substrate, irradiating the laser to the winding point of the fiber around the substrate and heating the metal powder or There is a method in which a metal foil is supplied, melted, and integrated on a substrate.

As the fiber coated with metal in advance, for example, single fiber 06 shown in FIG. 4 or a bundle thereof is brought into contact with molten metal to directly coat metal 07, and single fiber 06 or a bundle thereof shown in FIG. A layer 15 is coated and the resin is coated with a metal powder 16, a single fiber 06 is directly coated with a metal 07 as shown in FIG. 6, or a metal is applied to a non-treatment potential bundle 02 ′ as shown in FIG. What wound the foil 31 can be used.

These metal-coated fibers are:
For example, it can be manufactured as follows. (1) Single fiber or a fiber in which a bundle thereof is directly coated with a molten metal (fiber in FIG. 4): As shown in FIG. 8, a fiber bundle drawn out of untreated fiber bobbin 08 is smoothed with a smoothing roller 0.
9, the molten metal is adhered and impregnated through a molten metal tank 10, then the excess metal is removed by a surplus metal removing roller 11, and re-assembled by a V-groove roller 12, and then cooled by a cooling device 13 to form a metal coating. It is wound around the fiber bobbin 14 to form a metal-coated fiber.

(2) A fiber in which a single fiber or a bundle thereof is coated with a resin layer and the resin is coated with a metal powder (fiber in FIG. 5): As shown in FIG. 9, the fiber is drawn out of an untreated fiber bobbin 08. The fiber bundle is smoothed through a smoothing roller 09, coated with a resin by a resin transfer roller 18 rotating in a resin tank 17 filled with a resin nutrient solution, and adhered to the surface by spraying metal powder in a metal powder attaching device 19. Then, after being collected again by the V-groove roller 12, it is dried by the drying device 20 and wound around the metal-coated fiber bobbin 14 to obtain the metal-coated fiber. Note that the resin adhering to the fibers together with the metal powder evaporates when heated by the laser, so there is no problem during FRM molding.

(3) Fiber in which a single fiber is directly coated with metal (fiber in FIG. 6): A fiber bundle wound around a processing roller 27 in a vacuum chamber 21 equipped with a vacuum pump 28 as shown in FIG. By moving the roller by rotating it, a charge is applied to the molten metal 23 in the lower crucible 22, and an opposite charge is applied to the fiber via the processing roller 27, thereby depositing the metal on the fiber surface. A coated fiber is obtained. Alternatively, it can be manufactured by a plating method (not shown).

The laser used in the present invention may be appropriately selected and used depending on the type of material used, the conditions at the time of winding, and the like, but a YAG laser that can be transmitted by an optical fiber is preferable.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described more specifically with reference to the drawings. FIG. 1 shows the first embodiment of the present invention.
It is explanatory drawing which shows the outline | summary of filament winding about Example of (a). In FIG. 1, a filament winding machine 01 winds a fiber bundle 02 coated with a metal on a mandrel (molding die) 03 made of a material that does not form a solid solution with a metal such as ceramic.
The RM structure 04 is manufactured. At this time, the metal is melted by irradiating the winding point with a laser by the laser irradiating device 05 and integrated with the surrounding portion, whereby a fiber-reinforced metal structure can be formed and manufactured.

FIG. 2 is an explanatory view showing the outline of the vicinity of a fiber winding point of a filament winding device according to a second embodiment of the present invention. The apparatus shown in FIG. 2 adds a mechanism for injecting the metal powder 16 to the laser irradiation head 24 using the inert gas 25, and the unprocessed fiber bundle 0 at the fiber winding point.
The molten metal is directly sprayed onto the 2 'by the laser light 26, so that the fiber bundle is impregnated into the fiber bundle and integrated with the surroundings. FIG. 2 shows a non-treated fiber bundle 0 as a fiber bundle.
Although 2 'is shown, it is also possible to supply a fiber bundle coated with metal in advance, and to simultaneously melt the coated metal and the metal powder to be sprayed.

FIG. 3 is an explanatory view showing an outline of the vicinity of a fiber winding point of a filament winding device according to a third embodiment of the present invention. The apparatus shown in FIG. 3 supplies an untreated fiber bundle 02 ′ and a metal foil 31, and applies a laser beam 26
Irradiates the metal foil 31 to irradiate the FRM
This is for producing the structure 04.

[0017]

According to the method of the present invention, when the fiber is wound by the filament winding method, the fiber can be brought into contact with the molten metal at the winding point and directly molded integrally, so that a large, lightweight and high-strength fiber reinforcement can be obtained. A metal structure can be easily formed and manufactured. Also,
Since the heating and cooling are performed instantaneously by the laser, the fibers can be prevented from reacting with the metal and deteriorating, and a tough fiber-reinforced metal structure can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state of fiber winding by a filament winding device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing an outline near a fiber winding point of a filament winding device according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an outline near a fiber winding point of a filament winding device according to a third embodiment of the present invention.

FIG. 4 is a schematic view showing an example of a fiber coated with metal in advance.

FIG. 5 is a schematic view showing another example of a fiber coated with metal in advance.

FIG. 6 is a schematic view showing another example of a fiber coated with metal in advance.

FIG. 7 is a schematic view showing another example of a fiber coated with a metal in advance (a fiber wound with a metal foil).

FIG. 8 is a schematic view showing a fiber coating process using a molten metal.

FIG. 9 is a schematic view showing a fiber coating process using a resin and metal powder.

FIG. 10 is a schematic view showing a fiber coating process by a vacuum deposition method.

FIG. 11 is an explanatory view showing one example of a conventional FRM manufacturing method.

Claims (4)

[Claims] 1. A method for producing a fiber-reinforced metal structure by a filament winding method, wherein a fiber coated with a metal in advance is used, and when the fiber is wound around a substrate, a laser is applied to the winding point. A method for producing a fiber-reinforced metal structure, wherein a metal is heated and melted and integrated on a substrate. 2. A method for producing a fiber-reinforced metal structure by a filament winding method, comprising irradiating a laser to a winding point of a fiber around a base material, heating and supplying a metal powder or a metal foil to melt the fiber. A method for producing a fiber-reinforced metal structure, wherein the structure is integrated on a substrate. 3. The method for producing a fiber-reinforced metal structure according to claim 2, wherein a fiber coated with a metal in advance is used as the fiber. 4. The fiber coated with metal in advance is a fiber coated directly with metal on the fiber surface, a fiber coated with metal powder using a resin as a binder, or a fiber wound with a metal foil. Item 4. The method for producing a fiber-reinforced metal structure according to Item 1 or 3.