JP2007262522A - Method for manufacturing metallic material, and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing a metallic material having a brazed material layer with uniform thickness in a width direction integrated on the surface of even a wide metallic sheet, with the use of a simple facility. <P>SOLUTION: This manufacturing apparatus comprises: an uncoiler 2 for uncoiling the metallic sheet 1; a guide member 17 which transports the metallic sheet 1 which has been longitudinally uncoiled from the uncoiler 2, so as to form a U-shaped drooped portion 16; an application device 4 for applying a molten brazing material 7 to the surface of the metallic sheet 1 by dipping the drooped portion 16 of the metallic sheet 1 in the application device that accommodates the molten brazing material 7 therein; a cooling means 5 which cools the metallic sheet 1 coated with the molten brazing material 7 on the surface through the application device 4 to form a film of a solidified brazing material; a rolling device 6 for producing the metallic material 22 having the flat brazing material layer formed on the surface of the metallic sheet 1, by rolling the metallic sheet 1 having the film of the solidified brazing material thereon with the cooling means 5; and a coiler 3 which coils up the metallic material 22 produced by the rolling device 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a metal material manufacturing method and apparatus.

  In recent years, for example, a metal material in which a brazing material mainly composed of nickel (Ni) or the like is integrated in layers on both sides or one side of a base metal plate such as stainless steel or a heat-resistant alloy has been manufactured. It is like that.

  As a method for producing a metal material having such a brazing material layer, a brazing material powder is fixed to the surface of each metal plate cut into a predetermined shape by a powder rolling method, followed by sintering. Patent Document 1 discloses a method for manufacturing a metal material integrally provided with a material layer by a batch method.

  Further, Patent Document 2 discloses a method of manufacturing a clad self-brazing alloy by pressure-bonding a sheet-like clad to a substrate metal alloy sheet.

Further, the core material melt is solidified by continuously supplying it to the casting space formed by the cooling roll so that the melt for the core material contacts the surface of the plate material for the skin material in the solid phase. Patent Document 3 discloses a method for continuously producing a clad material having a skin material bonded to the material surface.
JP 2004-025251 A Japanese Patent Laid-Open No. 2002-210589 JP 2002-263799 A

  However, in the method of manufacturing the brazing material crimping material shown in Patent Document 1, the work of forming the brazing material layer on the surface of each metal plate cut into a predetermined shape is performed in a batch system, so the work is complicated and produced. However, there is a problem that it is technically difficult to keep the thickness of the brazing material layer constant with high accuracy.

  Moreover, in the method of manufacturing a clad self-brazing alloy shown in Patent Document 2, it is necessary to manufacture the sheet-shaped cladding in advance in order to pressure-bond the sheet-shaped cladding to the metal alloy sheet. Therefore, there is a problem that the manufacturing cost increases as the equipment cost increases. Furthermore, when an extremely thin sheet-like clad or a wide sheet-like clad is required, there is a problem that the facilities are further complicated and the manufacturing process is increased.

  Further, as shown in Patent Document 3, a clad material bonded with a skin material by cooling the core material molten metal discharged from the nozzle in contact with the surface of the solid material skin material plate in a casting space is provided. In the manufacturing method, there is a problem that temperature management is very difficult when the molten metal for core material is discharged from the nozzle into the casting space and solidified on the surface of the plate material for skin material, and the apparatus becomes very complicated. In particular, when it is applied to a plate material for a wide skin material, there is a problem that a temperature difference in the width direction occurs and the manufacturing becomes more difficult. Furthermore, since the solidified material of the molten metal for core material remains in the nozzle or in the vicinity of the casting space when the operation is stopped, there is a problem that the work for removing the solidified material is required and the work efficiency is lowered.

  The present invention has been made in view of the above circumstances, and a metal material in which a brazing material layer is integrated on the surface of a metal plate can be produced with high efficiency with a simple facility, and for a wide metal plate. However, it is an object of the present invention to provide a metal material manufacturing method and apparatus which can easily form a brazing material layer having a flat surface in the width direction.

  The metal material manufacturing method of the present invention forms a U-shaped hanging portion on a laterally moving metal plate, and immerses the hanging portion in the molten brazing material to apply the molten brazing material to the surface of the metal plate, Subsequently, the molten brazing material is cooled to solidify the molten brazing material to form a brazing material solidified film, and then the metal plate on which the brazing material solidified film is formed is pressed down to form a flat surface. A metal material having a brazing material layer formed thereon is obtained.

  In the metal material manufacturing method, the excess of the molten brazing material applied to the metal plate on the side where the hanging portion is immersed in the molten brazing material is removed to remove the molten brazing material applied to the surface of the metal plate. It is preferable to control the film thickness.

  Moreover, in the said metal material manufacturing method, it is preferable to hold | maintain the drooping part of the said molten brazing material and a metal plate in a non-oxidizing atmosphere.

  The metal material manufacturing apparatus of the present invention includes a rewinding machine that feeds out a metal plate, a guide unit that forms and conveys a U-shaped hanging portion on a metal plate that is fed out from the rewinding machine in a horizontal direction, A molten brazing material coating device for forming a molten brazing material film on the surface of the metal plate by containing the molten brazing material and immersing the hanging portion of the metal plate, and the molten brazing material film on the surface by the molten brazing material coating device. A cooling means for cooling the formed metal plate to form a brazing material solidified film, and a flat brazing material layer is formed by reducing the metal plate having the brazing material solidified film formed on the surface by the cooling means. A reduction device for obtaining a metallic material, and a winder for winding up the metallic material produced by the reduction device.

  In the metal material manufacturing apparatus, the metal plate surface is formed by removing the excess portion of the molten brazing material applied to the metal plate, which is disposed close to the metal plate on the side where the hanging portion is immersed in the molten brazing material and pulled up It is preferable that a coating amount adjusting device for adjusting the film thickness of the molten brazing material film is provided.

  Further, in the metal material manufacturing apparatus, the molten brazing material coating apparatus includes a brazing material melting furnace that contains and melts the brazing material, a casing that surrounds the brazing material melting furnace and the hanging portion of the metal plate, It preferably comprises non-oxidizing gas supply means for supplying non-oxidizing gas into the casing.

  According to the metal material manufacturing method and apparatus of the present invention, a metal material in which a flat brazing material layer is integrally formed on the surface of a moving metal plate can be manufactured with high efficiency with a simple apparatus configuration, In addition, it is possible to achieve an excellent effect that a flat brazing material layer can be easily formed even on a wide metal plate.

  In addition, the thickness of the molten brazing material film applied to the surface of the metal plate is made constant by removing the excess portion of the molten brazing material applied to the metal plate on the side where the drooping portion is immersed in the molten brazing material. There is an effect that can be controlled.

  Further, since the molten brazing material coating apparatus is maintained in a non-oxidizing atmosphere, there is an effect that adhesion of the molten brazing material to the surface of the metal plate is enhanced.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows an example of a form of a metal material manufacturing apparatus for realizing the metal material manufacturing method of the present invention.

  In FIG. 1, reference numeral 1 denotes a metal plate that is a base material for producing a metal material having a brazing material adhesive layer. The metal plate 1 is wound in a roll shape and is attached to a rewinder 2. The leading end of the metal plate 1 that is fed out from the rewinding machine 2 in the lateral direction is wound up by a winder 3 that is provided separately from the rewinding machine 2. . Between the unwinder 2 and the winder 3, a molten brazing material application device 4, a cooling means 5, and a reduction device 6 are sequentially arranged.

The molten brazing material application device 4 includes a brazing material melting furnace 8 that generates a molten brazing material 7 by containing and heating the brazing material, and a casing 9 that surrounds the brazing material melting furnace 8. The casing 9 is provided with non-oxidizing gas supply means 11 for supplying a non-oxidizing gas 10 such as nitrogen N 2 so as to keep the inside of the casing 9 in a non-oxidizing atmosphere. As the brazing material melting furnace 8, various heating methods such as an electric furnace or a gas furnace can be used.

  In the upper part of the casing 9, support rollers 12 and 13 are arranged at intervals in the lateral direction that is the conveying direction of the metal plate 1, and are arranged corresponding to the lower sides of the support rollers 12 and 13, respectively. And a guide roller 14 a, 14 b, 15 a, 15 b that approaches the metal plate 1 to guide the movement of the metal plate 1, and a drooping portion 16 that hangs down the metal plate 1 in a U shape is formed. The guide portion 17 is provided, and the lower end of the U-shaped hanging portion 16 is immersed in the molten brazing material 7 of the brazing material melting furnace 8.

  At this time, the right side guide rollers 15 a and 15 b in FIG. 1 constitute an application amount adjusting device 18. That is, the molten metal 7 adheres to the surface of the metal plate 1 moving in the direction of the arrow by dipping the hanging part 16, and the metal plate 1 is pulled up from the molten brazing material 7 to have a required thickness on the surface of the metal plate 1. Although applied, the guide rollers 15a and 15b remove the excess of the adhering molten brazing material 7 so that the thickness of the molten brazing material film applied to the surface of the metal plate 1 is adjusted. . For this reason, the guide rollers 15a and 15b can adjust the thickness of the molten brazing material film to be applied by relatively approaching and separating as shown by arrows in FIG. In addition to the guide rollers 15a and 15b, the coating amount adjusting device 18 includes a blade used for a blade coater or the like, and removes the excess of the molten brazing material 7 applied to the metal plate 1, etc. Various types of systems can be employed.

  The cooling means 5 includes a cooling chamber 19 in which the metal plate 1 applied so as to form a molten brazing material film having a required thickness by the molten brazing material coating device 4 is guided. By supplying a cooling fluid 21 (gas) such as air from a supply port 20 provided in 19, the molten brazing material film applied to the metal plate 1 is solidified to form a brazing material solidified film. . The cooling means 5 may have a simple structure in which a cooling fluid 21 such as air is simply sprayed onto the metal plate 1.

  The reduction device 6 is configured to guide the metal plate 1 on which the brazing material solidified film is formed by the cooling means 5 and to reduce the metal plate 1 by the reducing rolls 6a and 6b. The reducing device 6 has the brazing material solidified film. When the metal plate 1 is rolled down, a metal material 22 having a flat brazing material layer is produced. The metal material 22 produced by the reduction device 6 is taken up by a winder.

  Next, the operation of the embodiment shown in FIG. 1 will be described.

  After the tip of the metal plate 1 fed from the unwinding machine 2 is hung on the support roller 12 of the guide portion 17 provided in the casing 9 of the molten brazing material coating device 4, the space between the guide rollers 14a and 14b is viewed from above. After passing through the guide rollers 15a and 15b from the bottom to the top, the cooling means 5 is passed through the support roller 13 and then wound around the winder 3 through the reduction device 6. At this time, the lower end portion of the drooping portion 16 that hangs down in the U-shape is adjusted so as to be higher than the liquid level of the molten brazing material 7 to be generated later in the brazing material melting furnace 8 as indicated by a broken line. Keep it.

  Subsequently, the brazing material melting furnace 8 containing the brazing material material containing the brazing material component is started to generate the molten brazing material 7 therein.

  Next, the cooling means 5 and the reduction device 6 are driven. At this time, the metal plate 1 positioned in the reduction device 6 is not rolled, and the interval between the reduction rollers 6a and 6b is adjusted so that rolling is performed when the above-described brazing material solidified film is formed on the metal plate 1. Has been.

  Next, the metal plate 1 is fed out by the rewinding machine 2 so that the lower end portion of the drooping portion 16 hanging down in a U shape is immersed in the molten brazing material 7 as shown by the solid line in FIG. The feeding speed of the metal plate 1 by the machine 2 and the winding speed of the metal plate 1 by the winder 3 are adjusted so as to be equal, so that the lower end portion of the drooping portion 16 is always melted at a constant length. It is immersed in the material 7.

  Then, the molten brazing material 7 adheres to the surface of the metal plate 1 of the hanging portion 16, and the molten brazing material 7 having a required thickness is deposited on the surface of the metal plate 1 by pulling the metal plate 1 from the molten brazing material 7. Is applied. The metal plate 1 to which the molten brazing material 7 has been applied is guided to the coating amount adjusting device 18 by the guide rollers 15a and 15b, whereby the excess of the molten brazing material 7 is removed by the distance between the guide rollers 15a and 15b. As shown in FIG. 2, a molten brazing material film 23 having a predetermined thickness is formed on the surface of the metal plate 1.

  The metal plate 1 on which the molten brazing material film 23 having a required thickness is applied by the molten brazing material coating device 4 is guided to the cooling chamber 19 of the cooling means 5 and cooled by the cooling fluid 21 and applied to the metal plate 1. As the molten brazing material film 23 is solidified, a brazing material solidified film 24 is formed as shown in FIG.

  The metal plate 1 on which the brazing material solidified film 24 is formed by the cooling means 5 is guided to the reduction device 6 and is reduced, whereby a flat surface having a predetermined layer thickness is formed on the surface of the metal plate 1 as shown in FIG. The metal material 22 in which the brazing material layer 25 is integrally formed is manufactured. The metal material 22 produced by the reduction device 6 is taken up by the winder 3.

  As described above, since the brazing material layer 25 is integrally formed on the surface of the metal plate 1, the brazing material layer 25 is firmly integrated with the metal plate 1. Even if processing such as cutting, punching, and bending is performed, the problem that the brazing material layer 25 peels from the metal plate 1 does not occur. Therefore, the target material is brought into close contact with the surface of the brazing material layer 25 of the processed product obtained by processing the metal material 22 into various shapes, and the processed product and the target material are heated at a temperature at which the brazing material layer 25 melts. By doing so, the processed product and the target material can be bonded together to manufacture the product for the purpose. At this time, since the brazing material layer 25 is formed on a flat surface, the target material can be adhered in good contact.

  In addition, this invention is not limited to the said form, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

It is a side view which shows an example of the form of the metal material manufacturing apparatus which implement | achieves the metal material manufacturing method of this invention. It is sectional drawing which shows the state by which the molten brazing material film | membrane was apply | coated to the surface of a metal plate. It is sectional drawing which shows the state in which the brazing material solidified film was formed in the surface of a metal plate. It is sectional drawing which shows the state in which the brazing material layer was formed in the surface of a metal plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metal plate 2 Rewinding machine 3 Winding machine 4 Molten brazing material application apparatus 5 Cooling means 6 Reduction apparatus 7 Molten brazing material 8 Brazing material melting furnace 9 Casing 11 Non-oxidizing gas supply means 16 Hanging part 17 Guide part 18 Coating amount Adjustment device 22 Metal material 23 Molten brazing material film 24 Brazing material solidified film 25 Brazing material layer

Claims (6)

  A U-shaped drooping portion was formed on a metal plate that moved in the lateral direction, and the brazing material was applied to the surface of the metal plate by immersing the drooping portion in the molten brazing material, and then the molten brazing material was applied. A metal having a flat brazing material layer formed by cooling the metal plate to solidify the molten brazing material to form a brazing material solidified film, and then rolling down the metal plate on which the brazing material solidified film has been formed. A method for producing a metal material, comprising obtaining a material.   The film thickness of the molten brazing material applied to the surface of the metal plate is controlled by removing the excess portion of the molten brazing material applied to the metal plate on the side where the hanging portion is immersed in the molten brazing material and pulled up. The method for producing a metal material according to claim 1, wherein:   3. The method for producing a metal material according to claim 1, wherein the molten brazing material and the hanging portion of the metal plate are maintained in a non-oxidizing atmosphere.   A rewinding machine for feeding out the metal plate, a guide part for forming a U-shaped hanging portion on the metal plate fed in the lateral direction from the rewinding machine, and conveying the brazing material in the inside thereof. A molten brazing material coating device that forms a molten brazing material film on the surface of the metal plate by immersing the drooping portion of the plate, and cooling the metal plate having the molten brazing material film formed on the surface by the molten brazing material coating device. A cooling means for forming a brazing material solidified film, and a reduction device for obtaining a metal material having a flat brazing material layer formed by reducing a metal plate having a brazing material solidified film formed on the surface by the cooling means; A metal material manufacturing apparatus comprising: a winder that winds up the metal material manufactured by the reduction device.   The molten brazing material film on the surface of the metal plate is removed by removing the excess portion of the molten brazing material applied to the metal plate, which is disposed close to the metal plate on the side where the hanging portion is immersed in the molten brazing material and pulled up. The metal material manufacturing apparatus according to claim 4, further comprising a coating amount adjusting device that adjusts the thickness.   The molten brazing material coating apparatus accommodates and melts a brazing material, a brazing material melting furnace, a casing surrounding the drooping portion of the brazing material and the metal plate, and supplying a non-oxidizing gas into the casing 6. The metal material manufacturing apparatus according to claim 4, further comprising a non-oxidizing gas supply means.

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