Brazed stainless steel aluminum honeycomb panel

Abstract

The invention relates to a brazed stainless steel aluminum honeycomb plate applied to the technical field of aluminum honeycomb plates. The plate comprises a stainless steel layer, a welding sheet layer, an aluminum honeycomb core layer, a brazing groove, a metal welding sheet, an outer steel plate, a welding groove rib, a crimping sheet and an open groove. According to the invention, the metal welding sheets of the welding sheet layer are placed into the brazing grooves correspondingly, and the crimping sheets on the welding groove ribs vertically bend the open grooves on the metal welding sheets, so that the bent metal welding sheets are clamped between the crimping sheets and the honeycomb grid side surfaces of the aluminum honeycomb core layer, effectively improving the friction effect between the crimping sheets and the honeycomb grid side surfaces of the aluminum honeycomb core layer, facilitating subsequent brazing heating operations, and effectively improving the brazing efficiency of the aluminum honeycomb plate. The metal welding sheets are heated, melted and brazed to connect the stainless steel layer and the aluminum honeycomb core layer, effectively increasing the brazing area of ​​the stainless steel layer and the aluminum honeycomb core layer, thereby effectively improving the brazing connection effect of the stainless steel layer and the aluminum honeycomb core layer.

Description

Technical Field

[0001] The invention relates to an aluminum honeycomb panel, in particular to a brazed stainless steel aluminum honeycomb panel applied in the technical field of aluminum honeycomb panels. Background Art

[0002] Aluminum honeycomb panels are suitable for civil buildings, vehicle and ship decoration, etc. The brazed honeycomb panels on the market are currently composed of aluminum panels and honeycomb cores, but the environments where honeycomb panels need to be brazed are complex and diverse, so sometimes it is necessary to wrap a layer of stainless steel outside the honeycomb panel to adapt to the environment where aluminum panels cannot be used. In this way, the cost of stainless steel and the labor cost of wrapping stainless steel need to be added to the original cost of manufacturing the honeycomb panel, resulting in a waste of funds.

[0003] The specification of Chinese invention patent CN202321959842.0 discloses "A Stainless Steel Aluminum Composite Honeycomb Panel". The multiple anchoring columns on the inner side of the upper and lower outer protective layers can play a good positioning and anchoring effect, and can play a good anti-bending effect when encountering external impact. At the same time, the multiple glue-guiding side grooves on the outer side of the anchoring columns will be filled with glue during the glue coating and bonding process of the outer protective layer and the honeycomb layer. After solidification, they can play a good bonding effect and have higher bonding strength. The design of the positioning teeth and the positioning grooves cooperates with the anchoring columns to improve the bonding strength between the outer protective layer and the honeycomb layer, and avoid slippage and dislocation between the outer protective layer and the honeycomb layer.

[0004] During the brazing process of the stainless steel plate and the honeycomb core, the brazing welding sheet is not convenient to combine with the stainless steel plate and the honeycomb core, and more plate clamps are required for fixing, which affects the brazing efficiency of the aluminum honeycomb panel. In addition, the brazing adhesion area of ​​the stainless steel plate and the honeycomb core is small, which affects the brazing effect of the stainless steel plate and the honeycomb core. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the brazing welding sheet is not convenient to combine with the stainless steel plate and the honeycomb core, which affects the brazing efficiency of the aluminum honeycomb panel, and the area of ​​brazing adhesion between the stainless steel plate and the honeycomb core is small, which affects the brazing effect of the stainless steel plate and the honeycomb core.

[0006] In order to solve the above problems, the present invention provides a brazed stainless steel aluminum honeycomb panel, comprising a stainless steel layer, a welding sheet layer and an aluminum honeycomb core layer, and the stainless steel layer, the welding sheet layer, the aluminum honeycomb core layer, the welding sheet layer and the stainless steel layer are stacked;

[0007] The top and bottom of the aluminum honeycomb core layer are provided with brazing grooves, which correspond to the honeycomb grid edges of the aluminum honeycomb core layer. The welding sheet layer is made of metal welding sheets arranged in parallel, which correspond to the brazing grooves. The stainless steel layer is composed of an outer steel plate and welding groove ribs, which correspond to the brazing grooves and are fixedly connected to the outer steel plate surface in parallel. The left and right ends of the welding groove ribs are fixedly connected with pressing pieces, and the left and right ends of the metal welding sheet are provided with open grooves, which correspond vertically to the open grooves, and the pressing pieces and the open grooves correspond to the honeycomb grid distribution of the aluminum honeycomb core layer.

[0008] The preparation method of brazed stainless steel aluminum honeycomb panel is as follows:

[0009] Step 1: Spray the brazing flux on the side of the aluminum honeycomb core layer and the stainless steel layer to be welded, and then wait for the brazing flux to dry for use;

[0010] Step 2: stacking the stainless steel layer, welding sheet layer, aluminum honeycomb core layer, welding sheet layer, and stainless steel layer, the metal welding sheets of the welding sheet layer are placed into the brazing grooves on the upper and lower sides of the aluminum honeycomb core layer, and the crimping sheet vertically bends the opening grooves on the metal welding sheets, so that the bent metal welding sheets are clamped between the crimping sheet and the honeycomb grid side of the aluminum honeycomb core layer to obtain a honeycomb slab;

[0011] Step 3: Use a graphite plate to clamp the honeycomb slab in step 2 to prevent the honeycomb slab from deformation, and send it into a furnace, heat and weld it at 600°C for 10 minutes, take it out and naturally cool it to room temperature to obtain the brazed stainless steel aluminum honeycomb panel.

[0012] In the brazed stainless steel aluminum honeycomb panel, the crimping sheet presses the opening groove, so that the metal welding sheet is bent and deformed at the position of the opening groove, so that the metal welding sheet fits the aluminum honeycomb core layer more closely, effectively improving the brazing bonding effect between the stainless steel layer and the aluminum honeycomb core layer.

[0013] As a further improvement of the present application, an assembly belt is fixedly connected between the two ends of the parallel arranged metal welding sheets. The metal welding sheets are made of aluminum-based solder, which facilitates the metal welding sheets to be combined through the assembly belt to form a metal welding sheet whole that is easy to stack.

[0014] As a further improvement of the present application, side grooves are provided on the surface of the crimping sheet, and the side grooves correspond to the bent metal welding sheet, which effectively increases the welding area on the side of the crimping sheet, facilitates the melting of the metal welding sheet into the side grooves, and effectively improves the welding effect between the crimping sheet and the aluminum honeycomb core layer.

[0015] As a further improvement of the present application, the left and right edges of the metal welding sheet are covered with edging, and the edging is cut off corresponding to the opening groove, so as to effectively improve the protection effect of the side edges of the metal welding sheet.

[0016] As another improvement of the present application, the thickness of the edging corresponds to the thickness of the metal welding sheet, and the edging is made of wrought iron material. The melting point of the edging is greater than the melting point of the metal welding sheet. The edging is used to prevent the molten metal welding sheet from dripping downward, thereby effectively improving the brazing effect of the stainless steel layer and the aluminum honeycomb core layer.

[0017] As another improvement supplement of the present application, an extension piece is fixedly connected to the bottom of the truncated end of the edging, and two adjacent extension pieces are parallel. The extension piece is utilized to effectively improve the blocking effect of the opened slot after opening, and further reduce the dripping of the metal welding piece.

[0018] As another improvement supplement of the present application, a butt weld is spot-welded between the middle parts of two adjacent extension pieces. The extension pieces are made of stainless steel. The butt weld realizes a breakable connection between the two extension pieces. When the open groove is not compressed, the connected extension pieces effectively improve the structural stability between the edgings, thereby effectively improving the protection effect on the metal welding piece.

[0019] In summary, the present invention prepares the stacking of aluminum honeycomb panels in the form of a stainless steel layer, a welding sheet layer, an aluminum honeycomb core layer, a welding sheet layer, and a stainless steel layer. The metal welding sheets of the welding sheet layer are placed in the brazing grooves accordingly. When the stainless steel layer is stacked, the crimping sheets on the welding groove ribs vertically bend the open grooves on the metal welding sheets, so that the bent metal welding sheets are clamped between the crimping sheets and the honeycomb grid sides of the aluminum honeycomb core layer. The friction effect between the crimping sheets and the honeycomb grid sides of the aluminum honeycomb core layer is effectively improved by the metal welding sheets, thereby effectively improving the bonding effect of the stainless steel layer, the welding sheet layer and the aluminum honeycomb core layer, facilitating subsequent brazing heating operations, and effectively improving the brazing efficiency of the aluminum honeycomb panels. The metal welding sheets are heated and melted to connect the stainless steel layer and the aluminum honeycomb core layer by brazing, effectively increasing the brazing area of ​​the stainless steel layer and the aluminum honeycomb core layer, thereby effectively improving the brazing connection effect of the stainless steel layer and the aluminum honeycomb core layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0021] Figure 2 This is a three-dimensional exploded view of the first embodiment of the present application;

[0022] Figure 3 This is a three-dimensional structural diagram of the outer steel plate and the weld groove ribs of the first embodiment of the present application;

[0023] Figure 4 This is a three-dimensional structural diagram of a welding groove rib according to a first embodiment of the present application;

[0024] Figure 5 This is a three-dimensional demonstration diagram of the first embodiment of the present application where the crimping sheet presses the metal welding sheet to bend;

[0025] Figure 6 This is a three-dimensional structural diagram of a metal welding sheet and an assembly belt according to the first embodiment of the present application;

[0026] Figure 7 This is a demonstration diagram of the first embodiment of the present application where a metal welding sheet is bent and deformed in an open groove;

[0027] Figure 8 This is a three-dimensional structural diagram of a metal welding sheet according to a second embodiment of the present application;

[0028] Fig. 9 This is an enlarged view of the opening groove of the second embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Stainless steel layer; 101. Outer steel plate; 102. Welding groove ribs; 103. Crimping piece; 104. Side containment groove; 2. Welding sheet layer; 201. Metal welding sheet; 202. Opening groove; 203. Assembly belt; 204. Edge; 205. Extension piece; 206. Butt welding point; 3. Aluminum honeycomb core layer; 301. Brazing groove. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-7 It is shown that the brazed stainless steel aluminum honeycomb panel includes a stainless steel layer 1, a welding sheet layer 2 and an aluminum honeycomb core layer 3, and is stacked in the form of the stainless steel layer 1, the welding sheet layer 2, the aluminum honeycomb core layer 3, the welding sheet layer 2 and the stainless steel layer 1;

[0034] The top and bottom of the aluminum honeycomb core layer 3 are both provided with brazing grooves 301, and the brazing grooves 301 correspond to the honeycomb grid edges of the aluminum honeycomb core layer 3. The welding sheet layer 2 is made of metal welding sheets 201 arranged in parallel, and an assembly belt 203 is fixedly connected between the two ends of the metal welding sheets 201 arranged in parallel. The metal welding sheets 201 are made of aluminum-based brazing material, which is convenient for the metal welding sheets 201 to be combined through the assembly belt 203 to form a metal welding sheet 201 that is easy to stack as a whole. The metal welding sheets 201 correspond to the brazing grooves 301. The stainless steel layer 1 is composed of an outer steel plate 101 and a welding groove rib 102, and the welding groove rib 102 is fixedly connected in parallel with the brazing groove 301. On the surface of the outer steel plate 101, the left and right ends of the welding groove rib 102 are fixedly connected with a crimping piece 103, and the left and right ends of the metal welding piece 201 are provided with an open groove 202, the crimping piece 103 and the open groove 202 are vertically corresponding, and the crimping piece 103 and the open groove 202 are both corresponding to the honeycomb grid distribution of the aluminum honeycomb core layer 3, and the surface of the crimping piece 103 is provided with a side groove 104, and the side groove 104 corresponds to the bent metal welding piece 201, which effectively increases the welding area of ​​the side of the crimping piece 103, facilitates the metal welding piece 201 to melt into the side groove 104, and effectively improves the welding effect of the crimping piece 103 and the aluminum honeycomb core layer 3;

[0035] When brazing the stainless steel aluminum honeycomb panel, the stainless steel layer 1, the welding sheet layer 2, the aluminum honeycomb core layer 3, the welding sheet layer 2, and the stainless steel layer 1 are stacked, and the metal welding sheet 201 of the welding sheet layer 2 is placed in the brazing groove 301 above and below the aluminum honeycomb core layer 3, and the crimping sheet 103 vertically bends the opening groove 202 on the metal welding sheet 201, so that the bent metal welding sheet 201 is clamped between the crimping sheet 103 and the honeycomb grid side of the aluminum honeycomb core layer 3, and the friction effect between the crimping sheet 103 and the honeycomb grid side of the aluminum honeycomb core layer 3 is effectively improved by the metal welding sheet 201, thereby effectively improving the bonding effect of the stainless steel layer 1, the welding sheet layer 2 and the aluminum honeycomb core layer 3, and then a graphite plate is used to clamp and fix them, which is convenient for subsequent brazing heating operations, and the metal welding sheet 201 is heated and melted to braze and connect the stainless steel layer 1 and the aluminum honeycomb core layer 3, thereby effectively improving the brazing connection effect of the stainless steel layer 1 and the aluminum honeycomb core layer 3.

[0036] The preparation method of brazed stainless steel aluminum honeycomb panel is as follows:

[0037] Step 1: Spray the brazing flux on the sides of the aluminum honeycomb core layer 3 and the stainless steel layer 1 to be welded, and then wait for the brazing flux to dry for later use;

[0038] Step 2: stack the stainless steel layer 1, the welding sheet layer 2, the aluminum honeycomb core layer 3, the welding sheet layer 2, and the stainless steel layer 1, and place the metal welding sheet 201 of the welding sheet layer 2 into the brazing grooves 301 on the upper and lower sides of the aluminum honeycomb core layer 3, and the crimping sheet 103 vertically bends the opening groove 202 on the metal welding sheet 201, so that the bent metal welding sheet 201 is clamped between the crimping sheet 103 and the honeycomb grid side of the aluminum honeycomb core layer 3, and obtains a honeycomb slab;

[0039] Step 3: Use a graphite plate to clamp the honeycomb slab in step 2 to prevent the honeycomb slab from deformation, and send it into a furnace, heat and weld it at 600°C for 10 minutes, take it out and naturally cool it to room temperature to obtain the brazed stainless steel aluminum honeycomb panel.

[0040] The second implementation method:

[0041] Compared with the first embodiment, this embodiment mainly adds a rim 204, and the specific newly added structure is as follows. The rest of the structure is consistent with the first embodiment.

[0042] Figure 7-8 It is shown that the left and right edges of the metal welding sheet 201 are both covered with edging 204, and the edging 204 is cut off corresponding to the opening groove 202. The edging 204 is used to effectively improve the protection effect of the side edge of the metal welding sheet 201. The thickness of the edging 204 corresponds to the thickness of the metal welding sheet 201, and the edging 204 is made of wrought iron material. The melting point of the edging 204 is greater than the melting point of the metal welding sheet 201. The edging 204 is used to prevent the molten metal welding sheet 201 from dripping downward, thereby effectively improving the brazing effect of the stainless steel layer 1 and the aluminum honeycomb core layer 3;

[0043] After the crimping sheet 103 vertically bends the opening groove 202 on the metal welding sheet 201, the bent metal welding sheet 201 is clamped between the crimping sheet 103 and the honeycomb grid side of the aluminum honeycomb core layer 3, and the edging 204 follows the deformation of the metal welding sheet 201 and is also located between the crimping sheet 103 and the honeycomb grid side of the aluminum honeycomb core layer 3. Specifically, the metal welding sheet 201 located at the top of the aluminum honeycomb core layer 3 has its edging 204 located at a relatively lower position. After the metal welding sheet 201 is subsequently heated and melted, the melting point of the edging 204 is higher. Therefore, the edging 204 blocks the molten metal welding sheet 201, effectively preventing the metal welding sheet 201 from melting and dripping, thereby effectively avoiding affecting the welding of the stainless steel layer 1 and the aluminum honeycomb core layer 3.

[0044] Figure 7-9It is shown that an extension piece 205 is fixedly connected to the bottom of the truncated end of the edging 204, and two adjacent extension pieces 205 are parallel. The extension piece 205 is used to effectively improve the blocking effect on the opened opening slot 202, and further reduce the dripping of the metal welding piece 201. A butt welding point 206 is spot-welded between the middle parts of the two adjacent extension pieces 205. The extension piece 205 is made of stainless steel material. The butt welding point 206 realizes the breakable connection of the two extension pieces 205. When the opening slot 202 is not compressed, the connected extension pieces 205 effectively improve the structural stability between the edgings 204, thereby effectively improving the protection effect on the metal welding piece 201;

[0045] When the metal welding sheet 201 is not bent and deformed by the crimping sheet 103, the truncated end of the edging 204 corresponding to the open groove 202 is connected by the extension sheet 205, and the extension sheet 205 is connected by the butt welding point 206 by electric welding, so that the edging 204 at the left and right ends of the open groove 202 is in a connected state, thereby effectively improving the protection of the metal welding sheet 201 by the edging 204. Subsequently, when the metal welding sheet 201 is compressed by the crimping sheet 103, the butt welding point 206 between the two extension sheets 205 is fractured and broken, and the edging 204 follows the bending deformation of the metal welding sheet 201, and the edging 204 is extended by the extension sheet 205, thereby improving the blocking of the molten metal welding sheet 201, and effectively improving the welding effect of the stainless steel layer 1 and the aluminum honeycomb core layer 3.

[0046] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. Brazed stainless steel aluminum honeycomb panel, characterized by: It comprises a stainless steel layer (1), a welding sheet layer (2) and an aluminum honeycomb core layer (3), and is stacked in the form of the stainless steel layer (1), the welding sheet layer (2), the aluminum honeycomb core layer (3), the welding sheet layer (2) and the stainless steel layer (1); The top and bottom of the aluminum honeycomb core layer (3) are both provided with brazing grooves (301), the brazing grooves (301) corresponding to the honeycomb grid edges of the aluminum honeycomb core layer (3), the welding sheet layer (2) is made of metal welding sheets (201) arranged in parallel, the metal welding sheets (201) corresponding to the brazing grooves (301), the stainless steel layer (1) is composed of an outer steel plate (101) and welding groove ribs (102), the welding groove ribs (102) corresponding to the brazing grooves (301) and parallel and fixedly connected to the surface of the outer steel plate (101), The left and right ends of the welding groove rib (102) are fixedly connected with a crimping sheet (103); the left and right ends of the metal welding sheet (201) are provided with an open groove (202); the crimping sheet (103) vertically corresponds to the open groove (202); the crimping sheet (103) and the open groove (202) both correspond to the honeycomb grid distribution of the aluminum honeycomb core layer (3); the surface of the crimping sheet (103) is provided with a side containing groove (104); the side containing groove (104) corresponds to the bent metal welding sheet (201); The preparation method of brazed stainless steel aluminum honeycomb panel is as follows: Step 1: Spray the brazing flux on the sides of the aluminum honeycomb core layer (3) and the stainless steel layer (1) to be welded, and then wait for the brazing flux to dry for later use; Step 2: stacking the stainless steel layer (1), the welding sheet layer (2), the aluminum honeycomb core layer (3), the welding sheet layer (2), and the stainless steel layer (1); placing the metal welding sheet (201) of the welding sheet layer (2) into the brazing grooves (301) on the upper and lower sides of the aluminum honeycomb core layer (3); and vertically bending the opening grooves (202) on the metal welding sheet (201) with the crimping sheet (103), so that the bent metal welding sheet (201) is clamped between the crimping sheet (103) and the honeycomb grid side of the aluminum honeycomb core layer (3), thereby obtaining a honeycomb slab; Step 3: Use a graphite plate to clamp the honeycomb slab in step 2 to prevent the honeycomb slab from deformation, and send it into a furnace, heat and weld it at 600°C for 10 minutes, take it out and naturally cool it to room temperature to obtain the brazed stainless steel aluminum honeycomb panel.

2. The brazed stainless steel aluminum honeycomb panel according to claim 1, characterized in that: An assembly belt (203) is fixedly connected between the two ends of the parallel-arranged metal welding sheets (201), and the metal welding sheets (201) are made of aluminum-based solder.

3. The brazed stainless steel aluminum honeycomb panel according to claim 1, characterized in that: The left and right edges of the metal welding sheet (201) are both covered with edging (204), and the edging (204) is cut off corresponding to the opening groove (202).

4. The brazed stainless steel aluminum honeycomb panel according to claim 3, characterized in that: The thickness of the edging (204) corresponds to the thickness of the metal welding sheet (201), and the edging (204) is made of wrought iron material.

5. The brazed stainless steel aluminum honeycomb panel according to claim 3, characterized in that: An extension piece (205) is fixedly connected to the bottom of the truncated end of the edging (204), and two adjacent extension pieces (205) are parallel.

6. The brazed stainless steel aluminum honeycomb panel according to claim 5, characterized in that: A butt welding point (206) is spot welded between the middle parts of two adjacent extension pieces (205), and the extension piece (205) is made of stainless steel.

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