JPH0475730A - Manufacture of brazed honeycomb panel - Google Patents

Abstract

PURPOSE:To reduce stages, to improve productive efficiency and to save energy by arranging faceplates on the upper and lower surfaces of cores fixed with adhesive and brazing them through one heating for brazing into one body. CONSTITUTION:Aluminum brazing sheets 3 on which adhesive 6 is stuck partially through a silk screen, etc., are laminated, if necessary pressurized, heated by a hot press and brazing sheets 6 are stuck partially by melted adhesive, then, cut in a prescribed width, extended in the laminating direction to meanufacture a honeycomb core made up of an aggregate of hexagonal cylindrical cells 5 through adhered parts by adhesive. Then, when the faceplates made of aluminum brazing sheet are arranged so that brazing layers come to the core side, charged into a brazing furnace to heat the full body, the brazed layers of the cores and facelpates are joined into one body to obtain a honeycomb panel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a brazed honeycomb panel, particularly a method of manufacturing a brazed aluminum honeycomb panel.

[Conventional technology]

As shown in FIG. 3, the honeycomb panel 1 is formed by joining face plates 4.4 to the upper and lower surfaces of a honeycomb core 2, and is widely used as a building material. Aluminum plates, aluminum foils, plastic sheets, paper, and the like are used as materials constituting the core and face plate, and joining is performed using brazing material, solder material, or adhesive.

In a brazed aluminum honeycomb panel, a brazing sheet made of an aluminum alloy plate clad with a brazing material by rolling is used as the core and face plate.

As shown in FIG. 2(A), the core is manufactured by applying a mold release agent to the laminate of brazing sheets 3 so as to prevent brazing at predetermined locations when the brazing filler metal layer 3a melts. The peeling points are formed in a staggered pattern when viewed from the cross-sectional direction of the laminate.
- The laminate is placed in a bag in a brazing furnace, heated, and joined by brazing. C is a peeling part where the mold release agent b@ is not applied, and it becomes a brazing material part with the lower layer sheet. A hook or the like is driven into the brazed portion or end portion and expanded in the stacking direction to widen the peeled portion.

In this case, in the relationship between the adjacent sheets of the laminate, the central part of the part C where the mold release agent is removed coincides with the central part of the part of the adjacent sheet where the mold release agent is applied, The width of the portion C where no mold release agent is applied is approximately 1/3 of the width of the applied portion. Therefore, when expanded in the stacking direction, the brazing material C
The honeycomb core 2 is made up of an aggregate of hexagonal cylindrical cells 5.

Face plates of brazing sheets made of the same aluminum alloy are provided on the upper and lower surfaces of the honeycomb core 2 and are integrally brazed.

[Problem to be solved by the invention]

However, in the conventional manufacturing method of aluminum brazed honeycomb panels, after the honeycomb core is produced, it is charged into a brazing furnace and brazed, and then a face plate is provided and the core is charged into the brazing furnace again. Must be joined to the face plate,
Requires 2 degrees of brazing heat. Therefore, there are problems in that the process becomes long and the manufacturing process takes time, and a lot of manufacturing energy is required.

An object of the present invention is to solve the conventional problems and provide a method capable of manufacturing a brazed honeycomb panel with only one brazing heat application.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention laminates a large number of aluminum brazing sheets partially coated with an adhesive, and stacks the brazing sheets together, which are polymerized by the adhesive. The bonded laminated brazing sheet is cut into a predetermined width and stretched in the lamination direction to create a honeycomb core made of an aggregate of hexagonal cylindrical cells, and aluminum is applied to the top and bottom surfaces of the honeycomb core. The structural feature is that the face plate of the brazing sheet is placed and joined together by brazing.

[For production]

According to the present invention, the expanded honeycomb core is adhesively held by adhesive, and when the face plate is placed and charged into the brazing furnace, the brazing material of the brazing sheet constituting the honeycomb core and the brazing material layer of the face plate are bonded together. is melted and the entire honeycomb panel is bonded and integrated.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a method for manufacturing a core of a brazed honeycomb panel according to the present invention, and the same components as in FIG. 2 showing a conventional example are given the same reference numerals.

Figure 1 (A) shows an aluminum brazing sheet 3 with adhesive glue 6 partially applied using a silk screen or the like.
FIG. 3a is a brazing material layer. The laminated brazing sheets are pressurized and heated with a hot press as necessary to melt the adhesive 116 and partially adhere the brazing sheets 6, and then cut to a predetermined width and cut in the lamination direction (direction of arrow A). Figure 2 (B
), a honeycomb core 2 made of an aggregate of hexagonal cylindrical cells 5 is produced via an adhesive section using glue 6. Next, face plates made of aluminum brazing sheets are placed on the upper and lower surfaces of the core so that the brazing metal layer is on the core side, and when the whole is heated in a brazing furnace, the core and the brazing metal layer on the face plate melt. Then, it becomes an integrated honeycomb core.

Next, a specific example will be described.

6951 alloy (A f-0,6%M g-0,3%Cu
Aluminum brazing sheet (JIS BA21 PC1 thickness 0
．． 25■, brazing metal cladding rate 10%) using a silk screen to apply adhesive glue [VC-5 manufactured by Osaka Printing Ink Manufacturing Co., Ltd.
00) is partially attached and laminated as shown in Figure 1 (A),
After partially adhering the polymerized brazing sheets to each other, they were cut into 30 square pieces. After cutting, it is expanded in the stacking direction to produce a core as shown in FIG. 1(B). Then,
3003 alloy (A7!-1,2%Mn-0,1%Cu)
is used as the core material, and BA4343 alloy (A j2-8%
A face plate of an aluminum plating sheet (JIS BARI PC, ff length 1.2 m, brazing metal cladding rate 10%) clad with Si) was placed on the - side and bottom of the core so that the brazing metal layer was on the core side. Place it, fix it with a jig, heat it in a nitrogen gas atmosphere, and join it by brazing, 150m x 900m
A honeycomb panel having a size of am was manufactured. When the honeycomb panel after being brazed and bonded was cut and examined, it was confirmed that the bond was perfect.

[Effects of the Invention] As described above, according to the method for producing a brazed honeycomb panel of the present invention, a face plate is placed on the lower surface of the core fixed with adhesive, and the panel is assembled into one body with only - times of brazing heat. Braze-bonded honeycomb panels can be obtained. Therefore, the process is shortened, production efficiency is improved, and energy saving is also helpful.

FIG.

1...honeycomb panel 3...B1/-Jingsee (・ 4... Face plate 6... Adhesive glue 2...honeycomb core 3a...brazing metal layer 5...Cell

Claims (1)

[Claims] 1. Laminate a large number of aluminum brazing sheets to which adhesive is partially applied, partially adhere the polymerized brazing sheets to each other with the adhesive, and make the adhered laminated brazing sheets to a predetermined width. A honeycomb core made of an aggregate of hexagonal cylindrical cells is produced by cutting and expanding in the stacking direction, and face plates of aluminum brazing sheets are placed on the upper and lower surfaces of the honeycomb core, and the honeycomb core is brazed and joined together. Method of manufacturing brazed honeycomb panels.