JP2004143514A - Wire rod for thermal spraying, and production method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adopt an optional material combination as to the provision of the material for thermal spraying consisting of a composite material. <P>SOLUTION: In the wire rod for thermal spraying formed so as to freely be fed to a nozzle for thermal spraying, melted by heating in the nozzle for thermal spraying, and thermally sprayed on the object for thermal spraying, a wire shaped body in which a plurality of wire members 6 and 7 are engaged in a state of being put together in a radial direction, and are integrated is composed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a thermal spraying wire that is formed so as to be freely supplied to a thermal spraying nozzle, is melted by heating in the thermal spraying nozzle, and is thermally sprayed to a thermal spraying target portion, and a method of manufacturing the same.
[0002]
[Prior art]
Conventionally, as this type of thermal spraying technology, a thermal spraying material in the form of a wire is supplied inside a thermal spraying nozzle, and energy is applied to the thermal spraying wire in the nozzle to liquefy or vaporize or atomize, and the fluid is sprayed as a fluid. Some of them are sprayed and adhered to a part to form a sprayed film (see, for example, Patent Document 1), and as the spraying wire, there has been one made of a single material such as a metal or a synthetic resin.
In the case where the thermal spray film itself is formed by thermal spraying using a composite material, as shown in FIG. 8, each of the thermal spraying wires 20 and 21 constituting the composite material and a plurality of types of thermal spraying wires are received. A nozzle 22 for spraying is prepared, and each of the wires 20 and 21 for spraying is supplied from the individually wound drum 5 to the nozzle 22 for spraying while being fed out, and spraying is performed according to the above-described procedure. It has been implemented. The method of manufacturing each thermal spray wire is a method of forming a normal single material wire, for example, by extrusion molding.
[0003]
[Patent Document 1]
JP-A-7-132266 (paragraph number [0005], FIG. 1)
[0004]
[Problems to be solved by the invention]
According to the conventional thermal spraying technique described above, when performing thermal spraying using a composite material, as described above, a plurality of thermal spraying wires are individually prepared, and the thermal spraying wire is supplied from each drum to the thermal spraying nozzle. Therefore, there is a problem that the thermal spraying equipment itself becomes large, and the operation tends to be complicated.
In order to solve such a problem, for example, when forming a wire for thermal spraying, a composite material is mixed based on a composite material (or an alloy if it is a metal), and a single wire for thermal spraying is used. Thermal spraying is conceivable. However, in this case, there is a problem of compatibility between the materials to be mixed as a composite material, and there are some combinations in which the physical properties are extremely deteriorated when mixed, and this is a new problem that it cannot be applied to any combination of materials. Will occur.
[0005]
Accordingly, an object of the present invention is to solve the above problems and provide a thermal spraying technique that can employ any combination of materials for providing a thermal spraying material composed of a composite material.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, in the thermal spraying wire that is formed so as to be able to be supplied to the thermal spraying nozzle, is melted by heating in the thermal spraying nozzle, and is thermally sprayed on the thermal spraying target portion, a plurality of types of wire members are arranged in a radial direction. That is, they are engaged with each other to form an integrated linear body.
[0007]
According to the characteristic structure of the first aspect of the present invention, since a plurality of types of wire members are engaged so as to be fitted in the radial direction to form an integrated linear body, a plurality of types of wire members can be used. Also, as a whole, it is possible to take the form of a single wire, and as the thermal spraying equipment, it is possible to use a compact equipment and to supply only one wire to the thermal spray nozzle. The operation is hard to be complicated. Of course, the thermal spray wire can be used as a single wire even in a thermal spray nozzle capable of receiving a plurality of thermal spray wires. That is, it is possible to cope with various types of thermal spraying equipment.
And, for example, even for metals that are difficult to be alloyed, since they merely form an integrated linear body by being engaged in a state of being fitted in the radial direction, mutual compatibility is not a problem, and Can be adopted.
In addition, the ratio of the plurality of types of materials constituting the linear body can be adjusted to an arbitrary value by selecting the thickness of the wire member to be used, and the material blending operation can be performed extremely easily.
[0008]
A characteristic configuration of the invention according to claim 2 is that the adjacent wire members are integrally connected to each other by a fitting portion capable of fitting each other.
[0009]
According to the characteristic configuration of the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, in addition to the simple structure of the fitting portion itself, a plurality of types of wire members are surely provided. It becomes possible to join them together, and it is possible to improve the productivity of the thermal spray wire.
[0010]
A feature of the invention according to claim 3 is that the adjacent wire members are caulked and integrally connected.
[0011]
According to the characteristic configuration of the third aspect of the invention, in addition to achieving the effect of the first aspect of the invention, since it is integrally connected by caulking, it is difficult for a plurality of types of wire members to come off from each other. Increases unity. Therefore, even if the handling of the thermal spraying wire is somewhat rough, the wire members do not separate from each other, and the handling property is improved.
[0012]
A characteristic configuration of the invention according to claim 4 is that the adjacent wire members are twisted with each other and integrated into a stranded wire state.
[0013]
According to the characteristic configuration of the invention of claim 4, in addition to the effect of the invention of claim 1, it is possible to form a thermal spraying wire member only by twisting a plurality of types of wire members. And productivity can be improved. In addition, since each wire member need only be twisted as it is, the trouble of forming a fitting portion in each wire can be saved, and the cost can be reduced.
[0014]
A feature of the invention according to claim 5 is that the wire member is a zinc wire member and an aluminum wire member.
[0015]
According to the characteristic configuration of the fifth aspect of the invention, in addition to being able to achieve the function and effect of any one of the first to fourth aspects of the invention, it becomes extremely brittle when alloyed, and alloying is impossible. By using zinc and aluminum for thermal spraying in a state where they are combined in a cross-section, it becomes possible to form an alloy film on the thermal spraying target portion without brittleness.
[0016]
The characteristic configuration of the invention according to claim 6 is a method for manufacturing a thermal spraying wire that is formed so as to be freely supplied to a thermal spraying nozzle, melts by heating in the thermal spraying nozzle, and manufactures a thermal spraying wire to be thermal sprayed on a thermal spraying target portion. A plurality of types of wire members are prepared, and the respective wire members are engaged with each other so as to be fitted in a radial direction to form an integrated linear body.
[0017]
According to the characteristic configuration of the invention of claim 6, it is possible to configure a thermal spraying wire member including a plurality of types of wire members while having a single outer shape. And, since the mutual wire members are only integrated by engagement, there is no problem of chemical compatibility, and there is no saying that physical properties are reduced by mixing like an alloy. Thus, it is possible to form the thermal spraying wire member in an extremely stable state.
Further, it is possible to manufacture under a normal temperature environment. For example, there is no need for hot working as in the case of alloying, so that the cost of manufacturing equipment can be reduced.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.
[0019]
FIG. 1 shows a state in which metal is being sprayed on the spray target portion 1 using the spray wire 3 of the present invention, and the spray nozzle 2 is operated toward the spray target portion 1. By doing so, the metal supplied by the thermal spray wire 3 is sprayed onto the thermal spray target 1 in a molten state, and the thermal spray film 4 can be formed on the thermal spray target 1.
[0020]
As shown in the drawing, the thermal spray nozzle 2 receives a thermal spray wire 3 and introduces the thermal spray wire 3 in a spraying direction, a heating unit 2b that heats the thermal spray wire 3 introduced from the wire introducer 2a, A spraying part 2c is provided which sprays a fluid onto the thermal spraying wire 3 in a state of being heated and melted by the heating part 2b, and also sprays the fluid onto the thermal spraying target part 1.
[0021]
The thermal spraying nozzle 2 is supplied with a single thermal spraying wire 3 wound around a drum 5, as well as electricity (or gas) for operating the heating unit 2 b and the spraying unit. The fluid discharged from 2c is supplied.
[0022]
As described above, the thermal spray wire 3 is formed so as to be freely supplied to the thermal spray nozzle 2, melted by heating in the thermal spray nozzle 2, and can be thermally sprayed to the thermal spray target portion 1. (In the embodiment, two types) of wire members 3a are engaged so as to fit in the radial direction to form an integrated linear body (see FIGS. 2 to 5).
[0023]
According to the thermal spraying using the thermal spraying wire 3 according to the present invention, since thermal spraying can be performed with a single integrated wire, the characteristics of a plurality of types of wire members can be utilized while extremely simple thermal spraying equipment can be used. The thermal spray coating 4 can be formed.
[0024]
Regarding the engagement structure between the wire members 3a, various forms can be adopted, and several examples are shown below.
Note that, here, a description will be given of a zinc wire member 6 and an aluminum wire member 7 as examples of the wire member 3a.
[0025]
(First embodiment)
As shown in FIG. 2, the thermal spraying wire 3A according to the first embodiment includes an aluminum wire member 7A having a recess 8 formed in the center of the transverse section, and a convex portion 9 which can be fitted into the recess 8 in a transverse section. And a zinc-made wire member 6A provided at the center of the wire.
The aluminum wire member 7A and the zinc wire member 6A are integrated so that the concave portions 8 and the convex portions 9 are fitted.
According to the thermal spraying wire 3A, a wire having a simple member cross-sectional shape can be used, so that it is possible to suppress an increase in manufacturing cost for each wire. Furthermore, since the integration can be achieved only by fitting the two wire members close to each other in the radial direction, it is possible to reduce the manufacturing cost of the thermal spraying wire 3A.
[0026]
(Second embodiment)
As shown in FIG. 3, the thermal spraying wire 3B of the second embodiment includes an aluminum wire 7B and a zinc wire 6B having the same cross-sectional shape.
Both the wire members 6B and 7B are formed in the same cross-sectional shape as the aluminum wire member 7A described in the first embodiment, and have a recess 8 at the center. Then, as shown in the figure, after the two wire members 6B, 7B are fitted in a state of meshing with each other, they are integrated by applying a pressure along the radial direction from the outside. So-called caulking is performed. According to the thermal spraying wire 3B, since the cross-sectional shapes of the respective wire members are the same, the production equipment can be shared for each wire member, and the cost can be reduced.
[0027]
(Third embodiment)
As shown in FIG. 4, the thermal spraying wire 3C of the third embodiment includes an aluminum wire 7C having the same cross-sectional shape as the wire 6B, 7B of the second embodiment, and a recess of the aluminum wire 7C. 8 and a zinc wire member 6C having a circular cross-sectional shape having a diameter that fits into the inside 8.
After the zinc wire member 6C is fitted into the recess 8 of the aluminum wire member 7C, it is integrated (caulked) by applying a pressure from the outside in a radial direction. According to the thermal spraying wire 3C, the cross-sectional shape of the integrated wire can be formed into a shape close to a perfect circle, and it can pass through the thermal spraying nozzle 2 more smoothly. Improvement can be achieved.
[0028]
(Fourth embodiment)
As shown in FIG. 5, as the thermal spraying wire 3D of the fourth embodiment, both the zinc wire member 6D and the aluminum wire member 7D have a cross-sectional shape of a circular shape. Are twisted with each other to form a stranded wire to achieve integration.
Specifically, after the two wire members are twisted together, they are formed by caulking so that the cross-sectional shape becomes almost circular.
According to the thermal spray wire 3D, both wire members can be used as they are, and cost reduction can be achieved.
[0029]
Next, an example of an apparatus for manufacturing the wire 3 will be described.
As shown in FIG. 6, the manufacturing apparatus 10 includes first forming portions 11 and 12 for separately forming the cross-sectional shapes of the two wire members 6 and 7, respectively, and the two wire members 6 and 7 in the radial direction. And a second forming part 13 for forming a cross-sectional shape as a wire while engaging with and integrating them.
Each forming section is provided with a pair of forming rollers R.
A mold 14 corresponding to the finished shape of each wire member or wire material is formed on the outer peripheral surface portion of the forming roller R, and the wire material or wire material is passed between the two forming rollers R to correspond to these molds 14. It is formed into a single wire with a cross-sectional shape.
The shape of the mold 14 can be various shapes, and the example shown in FIG. 6 shows a configuration for forming the wire 3A of the first embodiment.
[0030]
[Another embodiment]
Hereinafter, other embodiments will be described.
[0031]
<1> The thermal spraying wire is not limited to the one made of the metal described in the above embodiment, and includes, for example, a wire formed of a synthetic resin.
Therefore, the wire member is not limited to the zinc wire member and the aluminum wire member described in the above embodiment, but may be, for example, magnesium, nickel, vanadium, titanium, or the like, each of which is difficult to alloy. Constituting is particularly preferable in order to exhibit the effect.
Further, the wire members are not limited to two types, and it is also possible to configure a wire material by radially engaging three or more types of wire members.
These are collectively referred to as thermal spray wires.
<2> Even when the thermal spraying wire is formed by a combination of the zinc wire member and the aluminum wire member described in the above embodiment, the respective cross-sectional ratios can be freely changed. By changing the cross-sectional ratio, the material composition of the thermal spraying wire can be easily changed. This is the same even when three or more types of wire members are used.
Further, the cross-sectional shape of each wire member described in the above embodiment can be freely changed, and for example, a configuration in which materials are replaced with the previous cross-sectional shape may be used. That is, the cross-sectional shape of the zinc wire member described in the above embodiment is set to the cross-sectional shape of the aluminum wire member, and the cross-sectional shape of the aluminum wire member is set to the cross-sectional shape of the zinc wire member. Is also possible. Further, as shown in FIG. 7, the zinc wire member 6 and the aluminum wire member 7 can be formed so as to have a concentric cross section.
[0032]
Note that, as described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a use state of a wire rod. FIG. 2 is an explanatory view of a wire rod of a first embodiment. FIG. 3 is an explanatory view of a wire rod of a second embodiment. FIG. 4 is an explanatory view of a wire rod of a third embodiment. FIG. 5 is an explanatory view of a wire rod of a fourth embodiment. FIG. 6 is a partially cutaway perspective view showing a wire rod manufacturing apparatus. FIG. 7 is an explanatory view of a wire rod of another embodiment. Explanatory diagram showing usage status [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Thermal spray target part 2 Thermal spray nozzle 3 Thermal spray wire 6 Zinc wire member 7 Aluminum wire member

Claims (6)

A wire for spraying which is formed so as to be freely supplied to the nozzle for spraying, is melted by heating in the nozzle for spraying, and is sprayed on a portion to be sprayed,
A thermal spraying wire in which a plurality of types of wire members are engaged so as to fit in a radial direction to form an integrated linear body. The thermal spraying wire according to claim 1, wherein the adjacent wire members are integrally connected to each other at a fitting portion capable of fitting each other. The thermal spraying wire according to claim 1, wherein the adjacent wire members are caulked and integrally joined. The thermal spraying wire according to claim 1, wherein the adjacent wire members are twisted with each other and are integrated in a stranded state. The wire for thermal spraying according to any one of claims 1 to 4, wherein the wire is a zinc wire and an aluminum wire. A method for manufacturing a thermal spraying wire that is formed so as to be freely supplied to a thermal spraying nozzle, melts by heating in the thermal spraying nozzle, and manufactures a thermal spraying wire that is sprayed on a thermal spray target portion,
A method for producing a thermal spraying wire rod in which a plurality of types of wire members are prepared, and each of the wire members is engaged in a state of being fitted in a radial direction to form an integrated linear body.

Images