JPH07185792A - Manufacture of brazed honeycomb panel - Google Patents

Abstract

PURPOSE:To provide a manufacturing method of a brazed honeycomb panel which can strongly and surely join a shaped material and a core. CONSTITUTION:A honeycomb core 3 is enclosed with shaped materials 1, 2, wave like spacers 4 clad with a brazing material are arranged between an opposite side of the shaped material 1 and the honeycomb core 3, and the spacers 4 and the shaped material 1 are brazed. The spacers 4 are installed between the cell surface of the shaped material side's end part of the honeycomb core 3 and the shaped material 1, they are intermit plural pieces without installing them between the cell surface and the shaped material 1. Further, plural fine holes or slits are provided on the spacer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a brazed honeycomb panel having a structure in which a honeycomb core composed of hexagonal cells is surrounded by a shape member and each member is joined by brazing.

[0002]

2. Description of the Related Art In a conventional brazed honeycomb panel, a shape member is arranged on four sides, a honeycomb core is arranged in an area surrounded by the shape member, and a pair of honeycomb core and the shape member are sandwiched therebetween. The face plate is arranged. The honeycomb core and the face plate are clad materials in which a brazing material is clad to an aluminum plate, and after each member is assembled in the above arrangement, by heating in a vacuum or an inert atmosphere,
The brazing material melts and the members are joined.

[0003]

By the way, in order to completely join the aligned honeycomb cores and the shaped members in surface contact with each other by brazing, a suitable surface pressure and surface texture should be maintained. There is a need to. However,
Since the core part that contacts the shape is not fixed in particular,
When brazing and heating, it is easy to move, and thus it is difficult to join. When the brazed honeycomb panel is used as a structural material, the core and the profile cannot be joined until they function as a strength member. But,
The presence of a poor joint between the core and the profile is a serious drawback in its application as a structural material.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for manufacturing a brazed honeycomb panel capable of firmly and reliably joining a shape member and a core.

[0005]

A method for manufacturing a brazed honeycomb panel according to the present invention includes a honeycomb core surrounded by a shape member, and one side of the shape member and the honeycomb core and a facing of the shape member. A corrugated spacer clad with a brazing material is interposed between the side and the honeycomb core, and the honeycomb core, the spacer and the profile are brazed.

[0006]

In the present invention, since a corrugated spacer in which a brazing material is clad is interposed between the profile and the core and each member is brazed in that state, the elastic force of the corrugated spacer causes the core to be separated from the core. The spacer and the shape member are pressed against each other with an appropriate surface pressure. For this reason, when brazing is performed by heating, the spacer, the core, and the shape member are bonded to each other in a state in which an appropriate pressing force is applied, so that they are firmly bonded.

It is preferable that the spacer is made of a plurality of intermittent small pieces and has a length corresponding to one piece of the core cell. That is, it is preferable that the spacer is present between one surface of the cell and the profile, and is not present between a portion between the surfaces of the cell and the profile.

If the spacer is continuous over the entire length of the profile, the spacer is constrained in the lengthwise direction, so that the contact between the spacer and the core and the profile is partially insufficient. There is. For this reason, it is preferable that the spacer is an intermittent small piece in order to surely avoid defective bonding.

During vacuum brazing, it is also necessary to keep the inside of the chamber partitioned by the corrugated spacers in vacuum. Even in the case of flux brazing, it is necessary to keep each part in an inert atmosphere. For this reason, it is preferable to provide the spacer with minute holes or slits to ensure air permeability.

As the spacer clad with the brazing material, corrugated fins obtained by corrugating an aluminum brazing sheet can be used. If a double-sided clad material is used as this corrugated fin, it can be bonded to both the core and the profile.

[0011]

Embodiments of the present invention will now be specifically described with reference to the accompanying drawings. FIG. 1 is a plan view showing a method for manufacturing a brazed honeycomb panel according to the first embodiment of the present invention. Two pairs of shape members 1 and 2 are arranged on four sides to form a formwork. The honeycomb core 3 is arranged in the area surrounded by the shaped members 1 and 2. In this honeycomb core 3, one side of the hexagon of each cell is located on the side facing the pair of facing shape members 1, and one of the six faces of each cell is parallel to the shape member 1. It is arranged. A corrugated fin 4 formed by corrugating an aluminum phrasing sheet, in which a brazing material is clad on both surfaces, is corrugated between each surface on the shape member 1 side of each cell and the shape member 1. .

As shown in FIG. 2, this corrugated fin 4 is a serrate type fin 4a in which a ventilation slit 5 is provided only on the slope and no slits are provided on the peaks and valleys.
Or, as shown in FIG. 3, it is a fin 4b provided with micro holes 6.

The corrugated fins 4 have substantially the same length as each side of the cell and are arranged intermittently between the corrugated fins 4 and the frame 1. Further, since the fin 4 is curved in a corrugated shape, its cross section is triangular. And fin 4
Is in line contact with the profile and the surface of the cell.

In this embodiment, the core 3 is arranged in a region surrounded by the shape members 1 and 2, and a spacer 4 is arranged between each pair of the shape members 1 and the core 3 for each cell. By heating in a vacuum or in an inert atmosphere, the spacer 4 and the core 3 are
And the shape members 1 and 2 are joined by brazing.

In this case, a desired pressing force is applied between the core 3 and the profile 1 by the elastic force of the corrugated spacer 4. Therefore, the spacer 4, the core 3, and the frame 1 are firmly joined. Further, since the spacer 4, the core 3 and the shape member 1 are not in surface contact but in line contact, they are easily bonded by melting the brazing material and are reliably joined. Moreover, since each spacer 4 is divided and is intermittent, even if there is a dimensional difference in each cell of the core 3, the shape between the cells and the profile 1 has a large degree of freedom. To intervene. Therefore, the spacer 4 surely contacts the core 3 and the profile 1. Further, since the spacer 4 is not interposed between the surfaces of the cells of the core 3, the weight is not increased unnecessarily. The height h of the corrugated fin 4 can be adjusted by pulling it in the longitudinal direction. In particular, in the serrate type fin 4a, the slit 5 exists only on the slope and does not exist on the peaks and valleys. In this way, by providing the slit 5 in a part, it is possible to secure the air permeability as described above, and it becomes easy to stretch when the fins are pulled in the longitudinal direction (the direction of the arrow in the drawing), and the height of the spacer can be easily adjusted. Become.

Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, a plurality of corrugated fins 7 formed by bending an aluminum bleeding sheet are arranged on the shape member 2 orthogonal to the shape member 1 on which the spacer 4 is arranged. The corrugated fins 7 are folded in three, and the recesses face the sides of the honeycomb core 3.

Therefore, by fitting the sides of the core 3 into the recesses of the corrugated fins 7, the corrugated fins 7 can position the core 3. This can prevent the core from moving during the brazing work.

The present embodiment has the same effect as that of the first embodiment due to the spacer 4, and also has the effect that the positioning of the core is easy.

In each of the above-mentioned embodiments, the core 3 and the profile 1 can be firmly joined together via the spacer 4, but the profile and the face plates arranged so as to sandwich the profile are not provided. As shown in FIG. 6, by providing the groove 9 in the shape member 8, strong joining can be achieved.

That is, as shown in FIG. 6, the profile 8 is formed on the joint surface with the face plates 10 and 11 along a direction different from the longitudinal direction of the profile 8, that is, in the longitudinal direction of the profile 8. Grooves 9 are formed that extend in a direction intersecting with or in a direction orthogonal to the longitudinal direction of the profile 8.

Then, face plates 10 and 11 made of an aluminum brazing sheet are provided with the shaped member 8 and the honeycomb core 3 sandwiched therebetween, and brazing is performed by heating in a vacuum or an inert gas. Then, the face plate 10,
The brazing material melted from 11 flows along the groove 9 and can fill the inside of the groove 9 with the brazing material as shown in FIG. 7. Therefore, the brazing material is evenly distributed between the face plates 10 and 11 and the shape member 8 through the groove 9, and sufficient bonding strength can be obtained.

[0022]

As described above, according to the present invention,
A corrugated spacer clad with a brazing material is placed between the profile and the core, and the elastic force of each of the components causes the appropriate pressing force to act between the profile, spacer, and core. It can be brazed. Therefore, according to the present invention, the core and the profile can be firmly joined.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment method of the present invention.

FIG. 2 is a perspective view showing an example of a spacer used in this embodiment.

FIG. 3 is a perspective view showing another example of the spacer.

FIG. 4 is a plan view showing another embodiment method of the present invention.

FIG. 5 is a perspective view showing a modified example of the present invention.

FIG. 6 is a perspective view showing the shape of the profile.

FIG. 7 is a sectional view showing the shape of the same.

[Explanation of symbols]

 1, 2, 8; Shaped material 3; Honeycomb core 4, 4a, 4b; Spacer 5; Slit 6; Micro hole 7; Corrugated fin 9; Groove 10, 11; Face plate

Front page continuation (72) Inventor Toshihiko Sasaki 14-1 Chofu Minatomachi, Shimonoseki City, Yamaguchi Prefecture Kobe Steel Works, Ltd. Chofu Works (72) Inventor Isamu 14-1 Chofu Minatomachi, Shimonoseki City, Yamaguchi Prefecture Kobe Steel, Ltd. Inside the Chofu Works (72) Inventor Haruo Kato 14-1 Chofu Minatomachi, Shimonoseki City, Yamaguchi Prefecture Kobe Steel Works, Ltd.

Claims (3)

[Claims] 1. A wavy shape in which a honeycomb core is surrounded by a shape member, and a brazing material is clad between one side of the shape member and the honeycomb core and between an opposite side of the shape member and the honeycomb core. A method for manufacturing a brazed honeycomb panel, characterized in that a spacer is interposed and the honeycomb core, the spacer and the profile are brazed. 2. The wax according to claim 1, wherein the spacer is a plurality of intermittent pieces provided between the cell surface of the end portion of the honeycomb core on the side of the profile and the profile. Method for manufacturing bonded honeycomb panel. 3. The method for manufacturing a brazed honeycomb panel according to claim 1, wherein the spacer is provided with a plurality of minute holes or slits.