JPH08131898A - Production of fine porous part - Google Patents

Abstract

PURPOSE: To easily produce porous parts having pores of small core in part bodies by forming the part bodies on the circumferences of tubular members in the state of that a closing plate closes the part bodies and the pores of the tubular members open at both end faces of the part bodies. CONSTITUTION: One-side ends of the tubular members 2 having the pores 3 are inserted into the supporting holes formed at the closing plate 16 and are immersed together with peripheral wall members 15 from the closing plate 16 side into a heat resistant adhesive, for example, a brazing filler metal 18 in a thermostatic vessel 19 in which the brazing filler metal 18 is melted. The brazing filler metal 18, then, infiltrates the spacings between the supporting holes and the tubular members 3 and closes the spacings. The tubular members 2 and the closing plate 16 are thereafter closely joined if the closing plate 16 is taken out of the thermostatic vessel 19 and is cooled. The peripheral wall members 15 and the tubular members 2 are integrated in such a manner and thereafter, a molten metallic material is packed into the peripheral wall members 15. The porous parts are completed when the pores 3 of the tubular members 2 are opened by cutting or grinding both end faces after the metallic material solidifies.

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 fine pore parts suitable as parts for injecting liquid in a mist form such as fuel injection nozzles for automobile engines and spray nozzles for agricultural chemicals.

[0002]

2. Description of the Related Art There are many devices, such as automobile engines and pesticide sprayers, which are equipped with parts such as nozzles for spraying liquid in a mist state. In these devices, the liquid jetting part may be mounted for the function of increasing the flow velocity of the liquid, but in addition, it is mounted for the purpose of spreading the surface area of the liquid to diffuse the liquid evenly. There are also many. For example, the fuel injection nozzle of an automobile engine and the liquid injection nozzle of a pesticide sprayer mainly aim at the latter function.

Here, in order to more efficiently exert the latter function, that is, the function of expanding the surface area of the liquid and ejecting the liquid, it is better to eject the liquid from a hole having a diameter as small as possible. It is preferable because finer particles can be atomized.

In recent years, ink jet printers used in the output section of office automation equipment have head parts (liquid ejecting parts) provided with extremely small diameter ejection holes for ejecting ink (liquid). ) Is installed. In this head component, the smaller the inner diameter of the ejection hole is, the higher the density of the dots of the output characters can be. Therefore, the development aiming at that is to reduce the inner diameter of the ejection hole is underway.

[0005]

As described above, in the development of liquid jet parts, there are many cases in which it is an important issue to make the inner diameter of the jet hole smaller. Further, when the inner diameter of the injection hole is reduced, the injection amount of the liquid is reduced if the supply pressure is the same. Therefore, when the inner diameter of the injection hole is narrowed, it becomes necessary to compensate for the reduced cross-sectional area of the injection hole with the number of injection holes.

The present invention has been made in view of such circumstances, and an object thereof is to easily manufacture a micropore component having a plurality of micropores having a small inner diameter in a component body. In particular, the production method of the present invention aims to enable the production of a fine hole component having a plurality of extremely fine fine holes having a diameter of 0.03 to 0.25 mm, for example.

[0007]

In order to achieve the above object, the present invention manufactures a micropore component by using a plurality of tubular members having micropores. That is, in the method for manufacturing a pore component according to claim 1, first, a part of the tubular member is arranged in each support hole provided in the closing plate, and a gap between the tubular member and the support hole is formed. Block with adhesive. Next, the component body is formed around the tubular member in a state where the closing plate crosses the component body and the pores of the tubular member are opened at both end surfaces of the component body.

Further, in the method of manufacturing a micro-part according to the second aspect, a tubular molding die having an inner peripheral surface having a shape corresponding to the outer peripheral surface of the main body of the component is used to first form a plurality of tubular parts. The members are inserted and fixed in a tubular mold with a narrow space formed around each member. Then, the component body is formed by filling a narrow space in the cylindrical mold with a brazing material.

Further, in the method for manufacturing a micropore component according to claim 3, a plurality of mounting holes are provided in the component body, tubular members are fitted into these mounting holes, and the mounting holes and the tubular member are tubular. It is characterized in that a brazing material is supplied to a gap between the member and the gap to close the gap and the tubular member is fixed in the component body.

Further, in the method for manufacturing a porous component according to the fourth aspect, a plurality of mounting holes are provided in the component body, and the tubular member is shrink-fitted into these mounting holes to form the tubular member. It is characterized by being fixed inside the component body.

[0011]

The inner diameter of a hole that can be drilled by general mechanical processing such as drilling is limited to about 0.2 mm.
Further, a method of stretching the tubular member to reduce the inner diameter of the hole is also used, for example, in manufacturing an injection needle, etc., but according to the method of forming the pores by this stretching, the inner peripheral surface of the hole has a stretching direction. Since streaks occur and smoothness is lost, it is not suitable for highly precise processing of fine pores.

On the other hand, the present inventor applies a metal powder injection molding or drawing process to form a tubular member having a smooth inner peripheral surface and very small pores with an inner diameter of 0.03 to 0.25 mm. Revealed what you can do. . Here, the term “metal powder injection molding” means that metal powder and a binder are uniformly mixed (kneading), pelletized (granulated), and then injection-molded in a mold to produce a molded body. This is a method of manufacturing a product through a process of removing (defatting) the binder in the molded body and sintering it, and it is currently used for manufacturing precision small parts of various complicated shapes.

By applying the technique of this metal powder injection molding, that is, by arranging a fine wire (metal wire, carbon wire, etc.) in the axial direction in the mold, and after the injection molding, the fine wire is removed as described above. It is possible to mold tubular members with very small pores.

The drawing process is a process in which a tubular member having a relatively large inner diameter (for example, Φ0.5 mm or more) is stretched in the axial direction to reduce the inner diameter together with the outer diameter. By applying this drawing process, a tubular member having extremely small pores with an inner diameter of 0.03 to 0.25 mm can be formed.

However, in the former case, in order to directly form a plurality of pores in the component body by metal powder injection molding, a plurality of fine wires must be arranged in the mold, which requires a high level of technology and mass production. Not only is it unsuitable, but the yield is poor and not practical. Also, even by drawing
It has been difficult to achieve the formation of pores having an inner diameter of 0.03 to 0.25 mm unless it is in the form of a tubular part having a single pore. In other words, at locations where the internal structure of the material is uneven, the walls between adjacent through holes are destroyed, and the problems of frequent communication between the through holes frequently occur, resulting in a very unpractical result. Because he invited.

Therefore, in the method of manufacturing a micro-part according to the present invention, the metal powder injection molding and the drawing process described above are performed.
By applying various thin tube forming techniques, first make a plurality of tubular members with a single pore, and form the component main body around these tubular members to create multiple pores in the component main body. It has been made possible to easily manufacture a micropore component having a.

Here, when the component body is formed around the tubular member by casting, metal powder injection molding, or the like, a gap may occur at the boundary portion, especially when the tubular member and the component body are different materials. However, since the main purpose of the micropore component manufactured according to the present invention is a liquid injection nozzle, it is not preferable that the liquid leaks out from such a gap.

In view of the above points, in the method of manufacturing a fine pore component according to the invention of claim 1, a part of the tubular member is arranged in each of the support holes formed in the closing plate, and the support holes are formed. An adhesive is filled in the gap between the seal plate and the closing plate to close the gap, and the closing plate is arranged so as to cross the main body of the component. are doing.

On the other hand, in the method of manufacturing a fine hole component according to the invention of claim 2, after a plurality of tubular members having a single fine hole produced by the metal powder injection molding are inserted into a cylindrical molding die and fixed, Since the brazing material is filled and solidified in the narrow space in the tubular molding die, the brazing material can be in close contact with the tubular member to form a component body without a gap.

Further, in the method for manufacturing a fine hole component according to the third aspect of the present invention, a plurality of mounting holes are provided in the component body, the tubular member is disposed in these mounting holes, and the tubular member and the component are brazed. By the simple manufacturing method of closing the gap with the main body, on the other hand, in the manufacturing method of the pore component according to the invention of claim 4, the manufacturing cost is reduced by the simpler manufacturing method using shrink fitting. A significant reduction has been achieved.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the embodiment described below, a plurality of tubular members 2 are embedded in the component body 1 as shown in FIG. 19, and the pores 3 of these tubular members 2 are opened on both end faces of the component body 1, respectively. It is an example for manufacturing a porous component. Such a pore component is shown in FIG.
As shown in 0, the nozzle device 4 is attached to the tip of the nozzle device 4 to have a structure suitable for use in spraying liquid in a mist state.

FIGS. 1 to 6 are views for explaining a method for manufacturing a micropore component according to the first embodiment of the present invention. In the method of manufacturing the fine hole component according to this embodiment, first, the tubular member 2 having the fine holes 3 formed therein is produced by applying metal powder injection molding. That is, the metal powder as the material of the tubular member 2 and the binder for hardening the metal powder are mixed (kneading) and pelletized to facilitate the supply to the molding machine (granulation).

The molding machine is, for example, as shown in FIG. 1, a molding die 1 having an inner surface having a shape corresponding to the outer shape of the tubular member 2.
0, an injection nozzle 11 for supplying a material to the molding die 10 from one end, and a clamp member 13 for holding the thin wire 12 at the other end of the molding die 10. The injection nozzle 11 is provided with a supply pipe 11a for the thin wire 12, and this supply pipe 11a
The fine wire 12 can be automatically supplied into the molding die 10 through the.

The thin wire 1 automatically supplied from the injection nozzle 11.
The tip of 2 is led out from the other end through the inside of the molding die 10 and is clamped by the clamp member 13, and is further pulled between the injection nozzle 11 and the clamp member 13 so that the molding die 10 has no slack. It is arranged on the central shaft. continue,
The kneaded material of the pelletized metal powder and the binder is supplied from the injection nozzle 11 into the molding die 10 to form the tubular member body 2a. A thin wire 12 is embedded in the central axis portion of the tubular member body 2a. The tubular member body 2a is taken out from the molding die 10, the added binder is removed (degreasing), and the thin wire 12 embedded in the tubular member body 2a is pulled out.

The tubular member body 2a with the thin wire 12 pulled out
The pore 3 is formed in the central axis portion of the. The inner diameter of the pore 3 corresponds to the diameter of the thin wire 12 used. Therefore,
Depending on the selection of the thin wire 12, for example, 0.03 to
It is possible to form minute pores 3 having a size of 0.25 mm. Here, as the thin wire 12, various metal wires, carbon wire, or the like can be used, but it is preferable to use a tungsten wire or a stainless wire having a high tensile strength because breakage at the time of extraction from the tubular member main body 2a is small. , The yield is improved.

After the binder is removed and the thin wire 12 is pulled out, the tubular member body 2a is sintered to form the tubular member 2 having the pores 3. Since the tubular member body 2a shrinks slightly due to this sintering, it is preferable to set the dimensions and the diameter of the thin wire 12 in consideration of the linear shrinkage rate.

FIG. 2 shows the tubular member 2 thus manufactured.
3 is a perspective view showing the external appearance of FIG. As shown in the figure, a plurality of tubular members 2 each having a pore 3 formed in the central axis portion are manufactured by the above process. Then, as shown in FIG. 3, both end openings of the pores 3 formed in each tubular member 2 are closed by a brazing material 14 or the like. This is to prevent the molten metal from flowing into the pores 3 and clogging the inside thereof in the body forming step described later.

The peripheral wall member 15 is manufactured in parallel with the manufacturing of the tubular member 2 described above. In this embodiment, as shown in FIG. 4, the peripheral wall member 15 in which the tubular portion 17 is extended from the peripheral edge of the closing plate 16 is used. The peripheral wall member 15 can be manufactured by casting, for example, and its length is substantially the same as that of the tubular member 2. Here, a plurality of support holes 16a through which the tubular member 2 is inserted are formed in the closing plate 16. These support holes 16a are formed coaxially with the fine hole positions of the fine hole component which is the final product. Further, the tubular portion 17 is
Since it will be a part of the outer peripheral surface of the pore component as described later, it is set to the same dimension as the outer diameter of the pore component.

Next, the support hole 16a formed in the closing plate 16
One end of each tubular member 2 is inserted therein. At this time, FIG.
As shown in, the other end of each tubular member 2 is arranged on the same plane as the tip edge of the tubular portion 17. Then, the peripheral wall member 15 is fitted from the closing plate 16 side into a constant temperature container 19 in which a heat-resistant adhesive material, for example, the brazing material 18 is melted and filled, and the closing plate 16 is immersed in the brazing material 18. Then, the closing plate 16
In the gap between the support hole 16a of the
Invades and closes the gap. After that, when the closing plate 16 is taken out from the constant temperature container 19 and cooled, the brazing material 18 is solidified and the tubular member 2 and the closing plate 16 are joined together without a gap.

In this way, the peripheral wall member 15 and the tubular member 2
After being integrated with each other, the molten metal material 20 is filled in the peripheral wall member 15, and when the metal material 20 is solidified, both end surface portions shown by imaginary lines in FIG. When the pores 3 are opened, the pore component as shown in FIG. 11 is completed. In this fine hole component, since the component body 1 is formed by the cylindrical portion 17 of the peripheral wall member 15 and the metal material 20 filled therein, the closing plate 16 is arranged so as to cross the component body 1. For example, even if there is a gap in the component body 1, it is blocked in the axial direction by the closing plate 16, so there is no risk of the liquid leaking out of the gap even when used as a liquid injection nozzle or the like.

FIGS. 7 to 9 are views for explaining modified examples in which the peripheral wall member 15 used in the above-described first embodiment is replaced with the disk-shaped closing plate 21 to manufacture the fine hole component. As shown in FIG. 7, a disk-shaped closing plate 21 having a plurality of support holes 21a is manufactured. The closing plate 21 corresponds to the closing plate 16 of the peripheral wall member 15 shown in FIG. The tubular member 2 is inserted into each of the supporting holes 21a of the closing plate 21, and a heat-resistant adhesive material such as a brazing material 18 is placed in the gap between the supporting hole 21a and the tubular member 2 in the same manner as in the first embodiment. By filling, the gap is closed and the closing plate 21 and the tubular member 2 are joined (see FIG. 8).

Then, as shown in FIG.
The closing plate 21 and the tubular member 2 are arranged therein. The internal space (product molding portion) of the main body molding die 22 is formed in a shape corresponding to the outer shape of the pore component as shown in FIG. At this time, the closing plate 21 is arranged so as to cross the main body mold 22. Then, the molten metal is supplied into the body forming die 22 to cast the component body 1. After that, both end faces in the axial direction are cut or ground to open the pores 3 of the tubular member 2, so that a pore component including the tubular member 2, the closing plate 21, and the component body 1 is completed.

FIG. 10 is a diagram for explaining a method of manufacturing a micropore component according to the second embodiment of the present invention. In the second embodiment, a tubular molding die 31 having an inner peripheral surface having a shape corresponding to the outer peripheral surface shape of the pore component shown in FIG. 11 is used. That is, a plurality of tubular members 2 are inserted and fixed in the tubular molding die 31. At this time, a narrow space is formed around each tubular member 2. The tubular member 2 to be used may be formed by applying metal powder injection molding as in the first embodiment.

Then, with the tubular member 2 inserted, one end of the tubular molding die 31 is fitted into the constant temperature container 33 filled with the molten brazing material 32. Then, the brazing material 32 is sucked up into the narrow space around the tubular member 2 by the pressure or the capillary phenomenon caused by the fitting, and is filled in the narrow space.

When the brazing material 32 filled in the narrow space is solidified, the component body 1 is formed, and the tubular member 2 is embedded in the component body 1. If the component body 1 in which the tubular member 2 is embedded is taken out from the tubular molding die 31 and both axial end faces are cut or ground to open the pores 3 of the tubular member 2, the tubular member 2 and the component body 1 are removed. A fine pore component is completed. In order to facilitate the removal of the component body 1, the tubular molding die 31 may be formed of a combination of divided pieces, or may be formed of ceramics, and then melted with a solvent such as caustic soda.

According to the manufacturing method of the second embodiment, since the tubular member 2 can be embedded in the component body 1 at a high density, a large number of pores 3 are formed in a cross section smaller than that of the first embodiment. Pore parts can be manufactured.

11 to 17 are views for explaining a method for manufacturing a fine hole component according to the third embodiment of the present invention. In the third embodiment, first, a drawing process is applied to manufacture a thin tubular member. That is, as shown in FIG. 11, prepare a wire rod 40 having a large outer diameter φ1 and a large inner diameter φ2,
As shown in FIG. 12, this wire 40 is pulled out through the processed hole 41a of the die 41. The wire 40 having a large diameter can be easily manufactured by an ordinary extrusion process or the like. The processing hole 41a of the die 41 has a tapered diameter from the opening on one end to the opening on the other end, and the wire 40 is passed through the opening on the side with the larger diameter and pulled out from the opening with the smaller diameter. Thus, the wire 40 can be stretched in the axial direction to form a wire having a small outer diameter and a small inner diameter.

Since it is difficult to process with a single die 41 from a wire 40 having a large diameter to a wire having a small diameter (for example, φ0.03 to 0.25 mm) which can be used in this embodiment, it is not possible to process it stepwise. A plurality of dies 41 each having a reduced diameter of the processed hole 41a are used, and the dies 4 having smaller processed holes 41a are sequentially formed.
By shifting to 1 and carrying out drawing, a wire having a small diameter is formed. The tubular member 2 having the pores 3 can be obtained by cutting the thin wire rod formed in this manner into an appropriate length.
(See FIG. 2) can be manufactured.

Tubular member 2 manufactured by applying a drawing process
It cannot be denied that the inner walls of the pores 3 have inferior smoothness because a large number of protrusions are formed in the axial direction. When smoothness is required for the inner wall of the pore 3 depending on the application, as shown in FIG.
Wire 43 coated with diamond paste 42 on the peripheral surface
Through the pores 3 of the tubular member 2, and a step of polishing the inner peripheral surface of the pores 3 is inserted.

On the other hand, in this embodiment, as shown in FIGS. 14 and 15, a component body 1 having a plurality of mounting holes 44 having an inner diameter slightly larger than the outer diameter of the tubular member 2 at appropriate places is separately manufactured. Arrangement hole 4 by casting or drilling on a metal block
4 can be manufactured by a method such as boring. When the component body 1 is manufactured by casting, for example, a core made of a ceramic material is arranged at a position where the arrangement hole 44 is formed in the mold corresponding to the outer shape of the component body 1. Subsequently, molten metal may be poured into the mold, and after the molten metal has solidified, the ceramic core may be melted with a solvent such as caustic soda.

The tubular member 2 is fitted into each of the mounting holes 44 of the component body 1 manufactured as described above, and the brazing material 45 is supplied to the gap 44a between the inner wall of the mounting hole 44 and the tubular member 2. The tubular member 2 while closing the gap 44a.
Are fixed to the component body 1 (see FIG. 16). The brazing material 45 is supplied to the gap 44a as shown in FIG.
The brazing filler metal 45 is arranged at the open end of the above, and the brazing filler metal 45 is melted by heating and penetrated into the gap 44a by utilizing the capillary phenomenon.

As in the second embodiment (see FIG. 10), the component body 1 may be fitted into the constant temperature container 33 filled with the molten brazing material 32. Then, due to the pressure generated by the fitting or the capillary phenomenon, the brazing material 3 is placed in the gap 44a between the inner wall of the installation hole 44 and the tubular member 2.
2 can be sucked up and filled in the gap 44a to close the gap 44a and fix the tubular member 2 to the component body 1. Then, as shown in FIG.
The tubular member 2 and the component body 1 are cut or ground to form a pore component having a desired size.

Next, a method for manufacturing the fine hole component according to the fourth embodiment of the present invention will be described. In this embodiment, shrink fit is utilized to secure the microporous component to the component body. That is, the tubular member 2 having a small diameter is manufactured by using the pultrusion molding method as in the third embodiment described above (see FIGS. 11 to 13).
The component body 1 having the plurality of mounting holes 44 as shown in FIGS. 14 and 15 is manufactured. Here, the inner diameter of the mounting hole 44 is slightly smaller than the outer diameter of the tubular member 2 (for example, 0.01 to
0.03 mm) Set it small.

Next, when the component body 1 is heated, the component body 1 expands and the inner diameter of the mounting hole 44 increases. The tubular member 2 is inserted into the installation hole 44 thus enlarged. Subsequently, when the component body 1 is cooled, the component body 1 contracts, and accordingly, the inner diameter of the arrangement hole 44 is reduced, and the tubular member 2 is firmly fixed. The fine pore parts manufactured by using shrink fitting are unsuitable for applications such as engine injection nozzles that are exposed to high heat, but they are widely used as nozzles for devices used at room temperature such as liquid atomizers. Can be used.

The present invention is not limited to the above embodiment. For example, drawing may be applied to manufacture the tubular member 2 in the first and second embodiments, while metal powder injection molding may be applied to manufacture the tubular member 2 in the third and fourth embodiments. Good. Further, metal powder injection molding may be applied to the step of forming the component main body 1 in the first embodiment and its modification. The tubular member 2 does not have to have a cylindrical shape, but may have, for example, a polygonal shape, an elliptical shape, or the like as the outer peripheral shape. However, in the case of the second embodiment, it is necessary to have an outer peripheral shape capable of forming a narrow space into which the brazing material 32 can enter between the tubular members 2 without at least contacting the tubular members 2 to each other.

Further, the arrangement of the central axis of the tubular member 2 with respect to the central axis of the component body 1 may be appropriately determined according to the application of the micropore component. For example, the tubular members 2 may be arranged not only in parallel to the central axis of the component body 1 but also at an arbitrary angle. FIG.
Reference numeral 8 shows a modification of the component body 1 that can be used in the third embodiment. In this way, by forming the disposing hole 44 at an arbitrary angle with respect to the central axis and fixing the tubular member 2 to the disposing hole 44, a pore component that can be used as a nozzle having various injection angles can be obtained. Can be manufactured.

Further, in order to mount the manufactured fine pore component on various equipments and devices as an injection nozzle or the like, it is preferable to form a screw on the outer peripheral surface of the fine pore component. This thread formation is
After the component body 1 is manufactured, it can be formed by machining, but for example, screw molding is performed on the inner peripheral surface of the body forming die 22 in the modification of the first embodiment or the cylindrical forming die 31 of the second embodiment. If the groove for use is formed, the screw can be formed on the outer peripheral surface of the component body 1 at the same time when the component body 1 is molded. Further, in the case of the first embodiment, when the peripheral wall member 15 is manufactured, a screw can be formed on the outer peripheral surface of the tubular portion 17.

Depending on the application of the fine pore part, it may be possible to place it under a condition in which high pressure acts from one side. In such a case, it is preferable to form the outer shape of the pore component in a tapered shape and mount the component in a state (wedge shape) that bites into the mounting portion of the device or apparatus by the action of pressure (see FIG. 12). Since the above-mentioned embodiments and modifications are conceptual explanations of the manufacturing method of the present invention, when the method is actually used, parts to be used such as a tubular part, a closing plate, a main body molding die, and a cylindrical molding die are used. Needless to say, the apparatus and the like must be appropriately designed in some cases and the process may need to be changed.

[0049]

As described above, according to the method of manufacturing a fine hole component of the present invention, it is possible to easily manufacture a fine hole component having a plurality of fine fine holes in the component body.

[Brief description of drawings]

FIG. 1 is a sectional view for explaining a method of manufacturing a tubular member according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a tubular member used in the embodiment.

FIG. 3 is a cross-sectional view showing a state in which pores of the tubular member are closed at both end surfaces.

FIG. 4 is a perspective view of an outer peripheral member used in the same embodiment.

FIG. 5 is a cross-sectional view for explaining the step of closing the gap between the support hole of the closing plate and the tubular member in the embodiment.

FIG. 6 is a cross-sectional view for explaining a step of manufacturing a member main body in the same example.

FIG. 7 is a perspective view of a closing plate used in a modification of the first embodiment of the present invention.

FIG. 8 is a cross-sectional view for explaining a step of closing the gap between the support hole of the closing plate and the tubular member in the modified example.

FIG. 9 is a cross-sectional view for explaining a step of manufacturing a member main body in the modification.

FIG. 10 is a perspective view for explaining the second embodiment of the present invention.

FIG. 11 is a cross-sectional view of a wire rod for explaining a method of manufacturing a tubular member according to the third embodiment of the present invention.

FIG. 12 is a cross-sectional view showing a state where the wire rod of FIG. 11 is pulled through a die.

FIG. 13 is a cross-sectional view for explaining the step of polishing the inner wall of the pores of the tubular member.

FIG. 14 is a plan view showing a component body used in the third embodiment of the present invention.

FIG. 15 is likewise a central longitudinal sectional view.

FIG. 16 is a cross-sectional view for explaining a step of fixing the tubular member to the component body.

FIG. 17 is a cross-sectional view of a micropore component manufactured in the third embodiment of the present invention.

FIG. 18 is a modification of the third embodiment of the present invention.
It is sectional drawing shown corresponding to 5.

FIG. 19 is a perspective view showing an example of a pore component manufactured by the manufacturing method of the present invention.

FIG. 20 is a cross-sectional view showing an application example of the same porous component.

[Explanation of symbols]

 1: Component body 2: Tubular member 3: Pore 10: Mold 11: Injection nozzle 12: Fine wire 13: Clamp member 14: Brazing material 15: Peripheral wall member 16: Closure plate 16a: Support hole 17: Cylindrical part 18: Brazing material 19: Constant temperature container 20: Metal material 21: Closure plate 21a: Support hole 22: Main body molding die 31: Cylindrical molding die 32: Brazing material 33: Constant temperature container 41: Die 44: Installation hole 45: Brazing material

Claims (4)

[Claims] 1. A method of manufacturing a pore component using a plurality of tubular members having pores, wherein a part of the tubular member is arranged in each support hole provided in a closing plate, and The gap between the tubular member and the support hole is closed by an adhesive, the closing plate traverses the component body, and the pores of the tubular member are opened at both end faces of the component body, the periphery of the tubular member. A method for manufacturing a micropore component, characterized in that a component body is formed on the substrate. 2. A method of manufacturing a micropore component, which comprises using at least a plurality of tubular members having micropores and a tubular molding die having an inner peripheral surface having a shape corresponding to the outer peripheral surface of the component main body. The plurality of tubular members are inserted and fixed in the tubular molding die in a state where a narrow space is formed around each member, and the narrow space in the tubular molding die is filled with a brazing material. A method of manufacturing a microporous component, the method comprising: 3. A method of manufacturing a pore component, which comprises using a plurality of tubular members having pores, wherein a plurality of mounting holes are provided in a component body, and the tubular member is provided in these mounting holes. A method for manufacturing a fine pore component, which comprises fitting and supplying a brazing filler metal to a gap between the disposing hole and the tubular member to close the gap and fixing the tubular member inside the component body. 4. A method of manufacturing a pore component, which comprises using a plurality of tubular members having pores, wherein a plurality of mounting holes are provided in a component body, and the tubular member is provided in these mounting holes. A method for manufacturing a fine pore component, characterized in that the tubular member is fixed in the component body by shrink fitting.