JPH06106357A - Production of metallic honeycomb structural body - Google Patents

Abstract

PURPOSE:To provide the process for production of the metallic honeycomb structural body capable of improving the joining strength of the superposed parts of metallic plates to be joined and improving productivity. CONSTITUTION:This process for production has a stage for superposing the same or different metallic plates 11 which are to be joined and at least one of which are corrugated plates, on each other by interposing an insert material 14 consisting of the low melting point having the m.p. lower than the m.p. of the metallic plates 11 or an amorphous metal via a superposed part 13 and a stage for seam welding the superposed parts 13 of the metallic plates 11 by means of roller electrodes 15 and an electrode 12. The honeycomb structural body 10 having many pieces of honeycomb holes is produced by successively repeating the stages.

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 honeycomb structure made of metal, and more particularly, to a metal structure which can improve the bonding strength of a superposed portion of a metal plate or metal foil and can improve productivity. The present invention relates to a method for manufacturing a honeycomb structure.

[0002]

2. Description of the Related Art In recent years, materials for aircraft, buildings, precision equipment, and the like have been required to be lighter and have higher strength. To meet this demand, a metal honeycomb in which metal plates are joined in a honeycomb shape is used. Structures are used a lot. As a general joining method of a metal honeycomb structure, there is a joining method by brazing using a brazing material powder, but since a brazing material having a weak adhesive force is used as an adhesive, tensile strength and bending strength However, there is a problem in that the joining work becomes complicated. Therefore, as a means for solving these problems, Japanese Patent Laid-Open No. 4-284
A method for manufacturing a metal honeycomb structure material described in Japanese Patent Publication No. 83 is known. In this, a corrugated metal plate is interposed between two flat metal plates, and a pair of roller electrodes joins the overlapping portion of the flat metal plate and the corrugated metal plate by direct welding using a pulsed current. By doing so, the joint strength of the overlapped portion is improved.

[0003]

However, in the above-described conventional method for manufacturing a metal honeycomb structure, since the energizing time by the roller electrode is directly welded by the pulsed current, the brazing is performed. Although the bonding strength of the overlapping portion is higher than that of the honeycomb structure, the bonding strength is not so large, and therefore, there remains a problem as a honeycomb structure that can withstand complicated and fine processing. The present invention has been made in view of such circumstances, and it is possible to provide a method for manufacturing a metal honeycomb structure capable of improving the bonding strength of the overlapping portion of the metal plates to be bonded and improving productivity. To aim.

[0004]

A method according to the above-mentioned object.
The method for manufacturing a metal honeycomb structure according to the description, a metal plate of the same kind or different kinds in which at least one is a corrugated plate to be joined to each other, an insert made of a low melting point metal or an amorphous metal having a lower melting point than the metal plate. A step of superposing a material on the overlapped portion with the overlapped portion, and a step of seam welding the overlapped portion of the metal plate with a pair of electrodes, at least one of which is a roller electrode; It is configured to manufacture a honeycomb structure having honeycomb holes. The method for manufacturing a metallic honeycomb structure according to claim 2 is the method for manufacturing a metallic honeycomb structure according to claim 1, wherein a shape-retaining material having the same shape as the honeycomb hole is provided in the honeycomb hole. The metal plates are joined by being inserted and removed freely. Furthermore, the method for manufacturing a metal honeycomb structure according to claim 3, wherein a plurality of the same or different metal foils are provided between the respective metal foils, and a low melting point metal or amorphous having a lower melting point than the metal foils. Sequentially laminated while interposing an insert material made of a high-quality metal, at this time, the insert material is arranged at a predetermined interval in a direction orthogonal to the stacking direction, and the phase is changed in a zigzag shape in the stacking direction. Are arranged, and then the stacked portion of the metal foil with the insert material interposed from the outside is seam-welded by a pair of electrodes to provide a laminated body, and then the laminated body is expanded in the laminating direction to form a large number of pieces. It is configured to manufacture a honeycomb structure having the above-mentioned honeycomb holes. Here, claim 1
As the metal plate described in, for example, iron, titanium, copper, gold,
A slightly thick plate material made of silver, aluminum, or an alloy thereof, or a thin plate that is relatively thin and difficult to deform can be used, and a flat plate and a corrugated or corrugated and corrugated metal plate is used. The corrugated shape may be streamlined or angular. Further, the metal plates to be joined may be made of the same material or different materials. Further, as the corrugating method for the metal plate, a general processing method such as a pressing method or a bending method can be adopted. The insert material is an intermediate material used when joining metal plates by seam welding, and the low melting point metal has a lower melting point than the metal plate such as lead, tin, zinc or alloys thereof, In addition, a metal material that is well compatible with the metal plate during welding can be used. As the amorphous metal, it is preferable to use a component system close to a metal plate, for example, a nickel base such as a nickel-phosphorus system, a copper base, a tin ribbon, etc. Can be mentioned. Further, it is preferable to use the insert material as an ultrathin foil body because pressure and current applied between the electrodes during seam welding can be small and it is easy to handle. The width of the insert material is 1 depending on the electrode width.
~ 5 mm, and the thickness is 100 μm or less, especially 10 to 100
μm is preferred. The heating temperature of the insert material is preferably lower than the melting point of the metal plate and higher than the solidus temperature of the insert material. As the pair of electrodes used for seam welding of the metal plate, a roller electrode and a roller electrode or a roller electrode and another electrode such as a flat plate electrode are used. The honeycomb hole is a hole portion formed between the flat metal plate and the corrugated metal plate or between the corrugated metal plates, and the shape and size thereof are determined by the shape and size of the corrugation. It The material of the shape-retaining material according to claim 2 has a high strength so that it is not deformed by the pressure applied during seam welding, and it does not melt due to the welding heat of the polymerized portion transferred along the metal plate. It is possible to use steel, tungsten, etc., which have properties. Further, as the material of the metal foil according to the third aspect, the same material as the metal plate can be adopted, and the metal foils to be joined may be the same material or different materials. As the insert material used in claim 3, the same insert material as in claim 1 can be adopted. The interval at which the insert material is arranged in the direction orthogonal to the laminating direction of the metal foil is 0.5 to 20 mm,
Particularly, 1 to 5 mm is preferable. If the arrangement interval of the insert material is set to 2 to 5 times, preferably 4 times the width of the insert material, regular hexagonal honeycomb holes can be formed when the laminate is stretched. Thus, by using the insert material when joining the metal foil, the welding current is 0.6
Airtight joints can be obtained in a wide range of up to 2.2 KA.

[0005]

In the method for manufacturing a metal honeycomb structure according to claim 1, at least one of the corrugated metal plates is superposed with the insert member interposed in the overlapping portion, and then the overlapping portion is formed by a pair of electrodes. When current is applied under pressure, the interposed insert material melts and seam welds both metal plates. In this case, since the insert material made of a low melting point metal or an amorphous metal is interposed in the polymerized part, the insert material is melted by energization, and the melted insert material is pressed from both metal plate sides. Since they are joined via the above, it is possible to reduce the pressing force and the electric current at the time of seam welding, thereby preventing the deformation of the metal plate. Further, since the roll electrode is used for at least one of the electrodes, it is possible to accurately press the joint portion and to supply electricity. Then, the next metal plate is superposed on the joined metal plate, and these metal plates are seam welded by the same joining method. By repeating these operations in sequence, a metallic honeycomb structure having a large number of honeycomb holes is manufactured. Further, in the method for manufacturing a metal honeycomb structure according to claim 2, in the case where the metal plate is a thin plate which is easily bent and deformed by inserting a shape-retaining material into the honeycomb hole and seam-welding the metal plate. However, it is possible to prevent the honeycomb holes from being deformed by the pressure applied to the electrodes during the welding. Further, in the method for manufacturing a metal honeycomb structure according to the third aspect, a plurality of metal foils are sequentially laminated with an insert material interposed between the metal foils. At this time, the insert materials are arranged at predetermined intervals in the direction orthogonal to the stacking direction, and the phases are arranged in a staggered manner in the stacking direction. Then
When a pair of electrodes are applied from the outside to the overlapping part where the insert materials of the laminated metal foils are arranged and pressure is applied, the insert material melts between the overlapping parts and the adjacent metal foils are seam welded. To do. Thus, the laminated body is provided by seam-welding the metal foil, and then the laminated body is expanded in the laminating direction to manufacture the metallic honeycomb structure.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a side view of the metallic honeycomb structure according to the first embodiment of the present invention during manufacturing, FIG. 2 is an overall side view of the same metallic honeycomb structure, and FIG. 3 is a second side view of the present invention. Side view of the metal honeycomb structure according to the embodiment of the present invention during manufacture, FIG. 4 is a side view of the metal honeycomb structure according to the third embodiment of the present invention during manufacture, and FIG. 5 is the same metal honeycomb structure. FIG. 7 is a perspective view of the body during manufacturing.

A method of manufacturing a metal honeycomb structure 10 made of a metal plate having high rigidity according to the first embodiment of the present invention will be described. As shown in FIG. All the metal plates 11 are pressed into a continuous trapezoidal shape. The metal plates 11 are all made of stainless steel plate having a melting temperature of 1400 ° C. or higher. Next, the first metal plate 11 is placed on the flat plate-shaped electrode 12, and the second metal plate 11 is further stacked thereon with the peaks and valleys of the corresponding corrugations facing each other. To match. At this time, the Ni-B type insert material 14 made of a low melting point metal having a width of 1.5 mm, a thickness of 0.04 mm and a melting temperature of about 1,000 ° C. is sandwiched between the overlapping portions 13 between the metal plates 11. There is. Then, on the upper surface of the second overlapping portion 13, a roller electrode 15 having an electrode width of 14 mm was applied at a welding pressure of 50 kg and a welding speed of 1 m / min.
When moving while energizing between 15, the overlapping portion 13
Heat to 100 ° C. At this time, since the melting temperature of the metal plate 11 is 1,400 ° C. or higher and higher than the heating temperature of the polymerizing portion 13, the melting temperature of the insert material 14 is about 1,000 ° C. and lower than the heating temperature of the polymerizing portion 13, Material 14
Only the metal is melted and the two metal plates 11 are seam welded. Such work is performed in all the superposition sections 13. Next, the third metal plate 11 is superposed on the second metal plate 11, and the second and third overlapping portions 13 are similarly seam welded. By performing these operations for all the metal plates 11, the metal honeycomb structure 10 having a large number of honeycomb holes 16 between the metal plates 11 as shown in FIG. 2 is manufactured. In this way, the metal plate 1 is attached to the overlapping portion 12.
Since the metal plate 10 is seam-welded with the insert material 13 made of a low-melting point metal or an amorphous metal having a melting point lower than 0 interposed, the metal plate is directly welded using a pulse current as in the conventional means. Compared with, the welding strength does not fluctuate over the entire welding range, and moreover, stable joining is performed against fluctuations in the welding current. Therefore, the bonding strength of the metal honeycomb structure 10 can be stabilized, and the metal honeycomb structure 10 with few defects and high strength can be manufactured. Therefore, it is possible to provide a honeycomb structure which can endure complicated and fine processing which is almost impossible by the conventional means. Further, since the manufacturing method is almost the same as the general seam welding, the productivity can be improved as compared with the conventional brazing method by uniform heating.

Next, a method for manufacturing the metallic honeycomb structure of the second embodiment of the present invention will be described. In the method for manufacturing a metal honeycomb structure of the second embodiment, as shown in FIG. 3, a plurality of metal plates 21 made of thin plates having a thickness of 0.5 mm are pressed into a continuous trapezoid. By the way, since the metal plate 21 is thin as described above, the honeycomb hole 16 may be deformed by the pressure applied between the electrodes 12 and 15. Therefore, in the second embodiment, in order to prevent this, when the metal plates 21 are joined to each other, the shape retaining material 22 having the same shape as that of the hole 16 is freely inserted into and removed from the honeycomb hole 16. . The shape-retaining material 22 is all extracted after a relatively thin metal honeycomb structure having the same structure as the metal honeycomb structure 10 shown in FIG. 2 is manufactured. The rest of the configuration and operation are similar to those of the first embodiment, so the explanation is omitted.

Next, a method for manufacturing a honeycomb structure made of metal foil according to the third embodiment of the present invention will be described.
In the method for manufacturing a metal honeycomb structure of the third embodiment, as shown in FIG. 4, the thickness is 0.1 mm and the melting temperature is 1,4.
A large number of metal foils 31 made of stainless steel plates at 00 ° C or higher
A large number of insert materials 3 between the respective metal foils 31.
The two layers are sequentially laminated with the two interposed. The insert material 32 is an amorphous metal foil having a width of about 3 mm and a thickness of 5
An Fe-Cr-B type amorphous ribbon of 0 μm is used, and the insert materials 32 are arranged at a pitch of 1 cm in a direction orthogonal to the stacking direction, and are adjacent to each other in the stacking direction. Insert material 32
And the insert material 32 are arranged in a staggered manner with their phases being changed. Next, the superposed portions 33 of the laminated metal foils 31 are arranged from the outside to form a pair of upper and lower roller electrodes 3.
In step 4, seam welding is performed by applying pressure and energizing collectively. The roller electrode 34 is an electrode having an electrode width of 2 mm, and the seam welding has a pressing force of 280 kg, a welding speed of 1 m / min, and the roller electrode 3
It is performed under the condition of a current of 4 A for 500 A. When joined under such conditions, the superposition section 33 is heated to 1,000 to 1,150 ° C. At this time, the melting temperature of the metal foil 31 is 1,4
Since the melting temperature of the insert material 32 is not less than 00 ° C and the melting temperature of the insert material 32 is about 1,000 ° C, only the insert material 32 does not melt and the metal foil 31 does not melt. To join. In this case, the melted insert material 32 is pressed by the metal foil 31 from above and below, but since the insert material 32 is made of an amorphous metal, it is easily diffused in the metal foil 31. Works like. Then, the overlapping portion 33 is cooled and the insert material 32 is solidified, and the metal foil 31 is joined at this solidified portion. In this way, a laminated body 35 in which a large number of metal foils 31 are laminated
Is provided. Thereafter, by pulling the laminated body 35 in the laminating direction (vertical direction in the drawing), the laminated body 34 is expanded in the same direction, and the extremely thin metallic honeycomb structure having the same structure as the metallic honeycomb structure 10 shown in FIG. The body is manufactured. Thus, the insert materials 32 are arranged in a zigzag pattern between the overlapping portions 33 of the metal foil 31, and the overlapping overlapping portions 33 are collectively pressed and energized by the roller electrode 34 from the outside. The joining of the overlapping portion 33 is simpler than that of the first and second embodiments, and the productivity can be further improved. Further, in this embodiment, the insert material 3
Since Fe-Cr-B type amorphous ribbon is adopted as 2, the boron diffuses when the pressure is applied to the overlapping portion 33 by the roller electrode 34 for joining, and the joining strength is improved.

[0010]

In the method for manufacturing a metal honeycomb structure according to the first and second aspects of the present invention, the insert material made of a low melting point metal or an amorphous metal having a lower melting point than that of the metal plate in the superposed portion of the metal plate as described above. Since the metal plate is seam-welded with the interposition of, there is less variation in the welding strength over the entire welding range as compared with the conventional method of directly welding the metal plate using the pulse electrode. For this reason, the bonding strength of the metal honeycomb structure can be stabilized, and a metal honeycomb structure having a high strength with no variation in product strength can be manufactured. Therefore, it is possible to provide a honeycomb structure that can withstand complicated and fine processing that is almost impossible by conventional means. Further, since the manufacturing is almost the same as the general seam welding, the productivity can be improved as compared with the conventional brazing method. Particularly, in the method for manufacturing a metal honeycomb structure according to claim 2,
In this way, since the shape retention material is inserted into the honeycomb holes to join the overlapped portions between the metal plates, it is possible to eliminate the possibility that the honeycomb holes are crushed by the pressure of the electrodes during the joining. Further, in the method for manufacturing a metal honeycomb structure according to claim 3, in this way, the insert material is arranged in a zigzag shape between the overlapping portions of the metal foil, and the overlapping overlapping portions are collectively formed by an electrode from the outside. Since joining is performed by applying a pressure and current, the joining of the overlapping portion is easy, and the productivity can be further improved.

[Brief description of drawings]

FIG. 1 is a side view during manufacturing of a metal honeycomb structure according to a first embodiment of the present invention.

FIG. 2 is an overall side view of the same metal honeycomb structure.

FIG. 3 is a side view of the metal honeycomb structure according to the second embodiment of the present invention during manufacturing.

[Fig. 4] Fig. 4 is a side view during manufacturing of the metal honeycomb structure according to the third embodiment of the present invention.

FIG. 5 is a perspective view of the same metal honeycomb structure during manufacturing.

[Explanation of symbols]

 10 Metal Honeycomb Structure 11 Metal Plate 12 Electrode 13 Overlapping Section 14 Insert Material 15 Roller Electrode 16 Honeycomb Hole 21 Metal Plate 22 Shape-Retaining Material 31 Metal Foil 32 Insert Material 33 Overlapping Section 34 Roller Electrode 35 Laminate

Claims (3)

[Claims] 1. A metal plate of the same kind or different kinds in which at least one of them is a corrugated plate is joined to each other, and an insert material made of a low melting point metal or an amorphous metal having a melting point lower than that of the metal plate is interposed in the polymerized portion. And a step of seam-welding the overlapped portion of the metal plate with a pair of electrodes, at least one of which is a roller electrode, and the above steps are sequentially repeated to form a honeycomb structure having a large number of honeycomb holes. A method for manufacturing a metal honeycomb structure, which comprises: 2. The metal honeycomb structure according to claim 1, wherein a shape retainer having the same shape as that of the honeycomb hole is freely inserted into and taken out of the honeycomb hole to seam weld the metal plate. Body manufacturing method. 3. A plurality of the same or different kinds of metal foils are sequentially laminated between the respective metal foils with an insert material made of a low melting point metal or an amorphous metal having a lower melting point than the metal foils interposed therebetween. At this time, the insert materials are arranged at predetermined intervals in a direction orthogonal to the stacking direction, and are arranged in a staggered manner in the stacking direction, and then the insert material is arranged from the outside. It is possible to manufacture a honeycomb structure having a large number of honeycomb holes by seam-welding the overlapped portion of the metal foil with a pair of electrodes to provide a laminated body, and then expanding the laminated body in the laminating direction. A method for manufacturing a characteristic metal honeycomb structure.