JP2009090345A - Brazing filler metal sheet production device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brazing filler metal sheet production device by powder production whose scale is made small, and which performs heating treatment with high energy efficiency. <P>SOLUTION: The production device D for a brazing filler metal sheet 1 comprises: rolling rollers 4A, 4B sticking brazing filler metal powder 2 to at least either side of a metal sheet 21; and a heating part 6 sintering or melting the powder by heating, and the heating part 6 has a laser irradiation apparatus 10 irradiating the brazing filler metal powder 2 stuck to the metal sheet 21 with laser light L. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is an apparatus for producing a brazing material sheet, and in particular, a brazing material produced through a heat treatment in which a powder having a brazing material composition is rolled and fixed to a base material, and then the powder is sintered or melted. The present invention relates to a sheet manufacturing apparatus.

The brazing material sheet by powder rolling is, for example, mixing a powder of brazing, nickel, chromium and silicon with a stainless steel base material, and pressing the mixed powder with a pair of rolling rollers placed opposite to each other. It is formed by heating or sintering or melting a powder layer of several tens of microns.
The brazing material sheet by this powder rolling has good workability such as bending and pressing, and because it does not require binder volatilization at the time of brazing by using no binder, the brazing property is good. There are features.

Conventionally, a brazing material sheet by powder rolling has been provided with a heating furnace in a heating section of a brazing material sheet manufacturing apparatus, and is subjected to heat treatment for sintering or melting the brazing material sheet (see, for example, Patent Document 1).
JP 2004-25251 A

  However, when a heating furnace is provided in the heating part of the brazing material sheet manufacturing apparatus, the brazing material sheet manufacturing apparatus for continuously producing the brazing material sheet by powder rolling on the line sufficiently heats the brazing material sheet being conveyed. Therefore, there is a problem that the heating furnace provided along the heat treatment line of the brazing material sheet becomes large, and the brazing material sheet manufacturing apparatus becomes large in size.

  Also, in order to heat-process the brazing material sheet in the heating furnace, the atmosphere in the heating furnace must be controlled. For example, when the temperature in the heating furnace is set to a predetermined temperature, the heating furnace is large. Therefore, there is a problem that a great amount of energy and time are required to uniformly set the temperature in the heating furnace to a predetermined temperature.

  The present invention has been made in view of the above-described problems, and aims to provide a brazing material sheet manufacturing apparatus that performs energy-efficient heat treatment while reducing the size of the brazing material sheet manufacturing apparatus. And

In order to solve the above-described problems, the present invention provides a rolling roller for fixing a powder having a brazing material composition to at least one surface of a sheet-like base material, and heating for sintering or melting the powder by heating. The heating part has a laser irradiation apparatus that irradiates the powder fixed to the base material with a laser beam.
By adopting such a configuration, in the present invention, heat treatment can be performed by irradiating the powder fixed to the substrate with laser light.

Moreover, in this invention, the said laser irradiation apparatus employ | adopts the structure of moving to the width direction of the said base material.
By adopting such a configuration, in the present invention, the irradiation position of the laser beam can be moved in the width direction of the substrate, and the laser beam can be irradiated in the width direction of the substrate.

Moreover, in this invention, the said laser irradiation apparatus employ | adopts the structure that multiple are provided over the width direction of the said base material.
By employ | adopting such a structure, in this invention, a laser beam can be irradiated at once over the width direction of a base material.

Moreover, in this invention, the said laser irradiation apparatus provided with two or more employ | adopts the structure that moves in the width direction of the said base material integrally.
By adopting such a configuration, in the present invention, it is possible to irradiate a laser beam to a portion between the laser irradiation apparatus and another laser irradiation apparatus that is not irradiated with the laser.

In the present invention, the heating unit may include a second laser irradiation device that irradiates the powder fixed to the base material with laser light in the conveyance direction of the base material and behind the laser irradiation device. The structure of having is adopted.
By adopting such a configuration, in the present invention, the heat treatment can be divided into two stages, and the heating can be performed efficiently.

In the present invention, the temperature measurement device that measures the temperature of the powder irradiated with the laser light of the laser irradiation device, and the control for adjusting the irradiation energy amount of the laser light based on the measurement result of the temperature measurement device. A configuration of having a device is employed.
By adopting such a configuration, heat treatment can be performed with an irradiation energy amount of laser light suitable for the heat treatment based on the measurement result of the temperature of the heated powder.

According to the present invention, a brazing material sheet having a rolling roller for fixing a powder having a brazing material composition to at least one surface of a sheet-like base material, and a heating part for sintering or melting the powder by heating. The heating unit includes a laser irradiation device that irradiates the powder fixed to the base material with laser light. Therefore, heat treatment can be performed by irradiating the powder fixed to the substrate with laser light. That is, by performing the heat treatment by irradiation with high-power laser light, the sintering or melting step can be shortened, and the heating portion of the brazing material sheet manufacturing apparatus can be reduced. Moreover, since it is not necessary to heat the whole heating furnace like a heating furnace, consumption of a great deal of energy and time can be suppressed.
Therefore, according to the present invention, it is possible to reduce the scale of the brazing material sheet manufacturing apparatus by powder rolling and to perform heat treatment with high energy efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same reference numerals are assigned to the same members. In order to facilitate understanding, the scales of these drawings are appropriately changed.

(First embodiment)
FIG. 1 shows a configuration diagram of a brazing material sheet manufacturing apparatus D according to the first embodiment of the present invention.
A brazing material sheet manufacturing apparatus D has a hopper 3A for storing a brazing material powder (powder) 2 having a brazing material composition, and a brazing material powder 2 stored in the hopper 3A toward a peripheral surface of a rolling roller 4A described later. A belt feeder 5A that is conveyed and fed, rolling rollers 4A and 4B that roll the brazing material powder 2 and the metal plate (base material) 21 that are fed to the peripheral surface of the rolling roller 4A, and a brazing material that has been rolled. The heating unit 6 heat-treats the powder 2 and the metal plate 21, and the collection roller 8 that winds the brazing material sheet 1 formed after the heat treatment.

The brazing material powder 2 is composed of a powder having a brazing material composition. The constituent powder of the brazing powder 2 is selected according to the configuration of the metal plate 21. For the brazing powder 2, for example, if the metal plate 21 is made of stainless steel, it is preferable to select a powder such as nickel brazing or phosphorous copper brazing having a melting point lower than that of the metal plate 21 serving as a base material.
In the present embodiment, the brazing material powder 2 is composed of, for example, a mixed powder of brazing (BNi-5) powder, nickel powder, chromium powder, and silicon powder.

  The hopper 3A is configured to store the brazing powder 2 and to have a hollow structure that gradually decreases in diameter as the cross-sectional shape goes downward.

The belt feeder 5A is provided below the hopper 3A, and is configured to convey the brazing powder 2 supplied from the lower portion of the hopper 3A by being connected to a rotation drive mechanism (not shown) and driven to rotate. Further, the belt feeder 5A is configured such that the conveyance destination is located above the rolling roller 4A and the brazing material powder 2 is supplied onto the circumferential surface of the rolling roller 4A.
The belt feeder 5A has substantially the same width as that of the rolling roller 4A, and is configured to be able to supply the brazing material powder 2 uniformly over the width direction of the rolling roller 4A.

  The rolling rollers 4A and 4B are a pair and are provided below the belt feeder 5A. Moreover, rolling roller 4A, 4B is arrange | positioned so that a mutual surrounding surface may mutually oppose at a predetermined space | interval. And rolling roller 4A, 4B is the structure which rolls the member inserted between rolling roller 4A, 4B by rotationally driving with a rotation drive mechanism not shown.

  The heating unit 6 includes a laser irradiation device 10 and is installed below the rolling rollers 4A and 4B. The heating unit 6 heats the brazing material powder 2 and the metal plate 21 inserted into the heating unit 6 via the pulley 9 by irradiation with the laser beam L from the laser irradiation device 10 and heat-treats the heating unit 6. It has become.

As shown in FIG. 2, the laser irradiation apparatus 10 includes an optical fiber 11 that transmits laser light L from a laser generation source (not shown), and an optical system 12 that includes a lens that collects the transmitted laser light L. It has a configuration.
The laser irradiation apparatus 10 is disposed in the heating unit 6 at a certain distance from the surface to which the brazing material powder 2 of the metal plate 21 inserted in the heating unit 6 is fixed. This distance is determined based on the condensing distance of the optical system 12 that condenses the laser light L.
Further, the laser irradiation device 10 is a slide (not shown) provided in the heating unit 6 in the width direction of the metal plate 21 (the direction perpendicular to the conveying direction of the brazing material sheet 1, the direction perpendicular to the paper surface in FIG. 1). In this manner, the metal plate 21 is movable in the width direction while maintaining the above-mentioned constant distance from the surface of the metal plate 21 to which the brazing powder 2 is fixed.

  The collection roller 8 is supported so as to be rotationally driven by a rotational drive mechanism (not shown). And the collection | recovery roller 8 becomes a structure which winds up the brazing | wax material sheet | seat 1 obtained through the process of the heat processing by the heating part 6 (refer FIG. 1).

Next, the operation of the manufacturing apparatus D will be described along the manufacturing process of the brazing material sheet 1.
The manufacturing apparatus D unloads the brazing powder 2 stored in the hopper 3A from the lower portion of the hopper 3A by driving the belt feeder 5A, and conveys it toward the rolling roller 4A. Then, the belt feeder 5A continuously supplies the brazing material powder 2 to the peripheral surface of the rolling roller 4A over the width direction of the rolling roller 4A.

The rolling rollers 4A and 4B are rotationally driven at a predetermined distance so that the brazing material powder 2 supplied between the rolling rollers 4A and 4B is inserted between the rolling rollers 4A and 4B from below to be conveyed. The sheet-like metal plate 21 is rolled. By the rolling, the brazing powder 2 is fixed to the metal plate 21.
The metal plate 21 to which the brazing material powder 2 is fixed is inserted into the heating unit 6 positioned below the rolling rollers 4A and 4B via the pulley 9.

The heating unit 6 heats the brazing material powder 2 fixed to the metal plate 21 to a temperature near the melting point (for example, 1080 ° C.) of the brazing material powder 2 by irradiation with the laser beam L of the laser irradiation device 10.
The laser irradiation apparatus 10 condenses high-power laser light L by an optical system 12 provided in the laser irradiation apparatus 10, irradiates the brazing material powder 2 fixed to the metal plate 21, and rapidly heats it. To do. Here, the laser irradiation apparatus 10 irradiates the laser beam L while reciprocating in the width direction of the metal plate 21 along a slide or the like provided in the heating unit 6 (see FIG. 2).
At this time, since the brazing powder 2 fixed to the metal plate 21 is carried on a line, the irradiation position of the laser beam L irradiated over the width direction gradually shifts in the carrying direction. As a result, the laser beam L is irradiated over the entire brazing powder 2 fixed to the metal plate 21.
The brazing material powder 2 heated by the laser irradiation is sintered or partially melted and then cooled to form a layer, which is firmly fixed to the surface of the metal plate 21, thereby having a brazing layer 22 having brazing properties. Is formed (see FIG. 1).

  The brazing material sheet 1 made of the metal plate 21 and the clad layer 22 manufactured by the above manufacturing process is recovered by being wound by the rotational drive of the recovery roller 8.

The brazing material sheet 1 thus collected is formed with a clad layer 22 having brazing properties over the entire surface of one side (one side) of the metal plate 21.
In addition, the said clad layer 22 can be provided with the function suitable for the use of the brazing material sheet | seat 1 by adjusting suitably the structure ratio of the constituent powder which comprises the brazing material powder 2. FIG.

Therefore, according to the first embodiment of the present invention described above, the rolling rollers 4A and 4B for fixing the brazing powder 2 to at least one surface of the sheet-like metal plate 21 and the powder are sintered by heating. Or it is the manufacturing apparatus D of the brazing material sheet | seat 1 which has the heating part 6 to fuse | melt, Comprising: The heating part 6 has the laser irradiation apparatus 10 which irradiates the laser beam L to the brazing material powder 2 fixed to the metal plate 21. By adopting such a configuration, the heat treatment can be performed by irradiating the brazing material powder 2 fixed to the metal plate 21 with the laser light L.
That is, it is possible to shorten the heating process of sintering or melting by rapidly heating and heating the high-power laser beam L, and reducing the heating unit 6 of the brazing material sheet manufacturing apparatus D. can do. Moreover, since it is not necessary to heat the whole heating furnace unlike the heating furnace, consumption of energy for heating the heating furnace and time until the inside of the heating furnace is maintained at a constant temperature can be suppressed.
Therefore, according to this embodiment, there is an effect that the manufacturing apparatus D for the brazing material sheet 1 by powder rolling can be reduced in scale and heat treatment with high energy efficiency can be performed.

Further, according to the first embodiment of the present invention, the laser irradiation apparatus 10 adopts a configuration that moves in the width direction of the metal plate 21, so that the irradiation position of the laser light L in the width direction of the metal plate 21 is set. The laser beam L can be irradiated over the width direction of the metal plate 21.
Therefore, it is not necessary to provide a plurality of laser irradiation apparatuses 10, which can contribute to cost reduction. Further, by combining with the conveyance of the brazing powder 2 fixed to the metal plate 21, there is an effect that the laser beam L can be irradiated over the entire brazing powder 2 fixed to the metal plate 21.

(Second Embodiment)
FIG. 3 shows a configuration diagram of the heating unit 6 in the second embodiment of the present invention.
Hereinafter, the second embodiment will be described, but the description of the parts having the same configuration as the first embodiment will be omitted.

  As shown in FIG. 3, the heating unit 6 includes a plurality of laser irradiation devices 10 and a joining member 15 that connects them together.

The plurality of laser irradiation devices 10 are connected to the joining member 15 at equal intervals and arranged across the width direction of the metal plate 21.
The joining member 15 is connected to a slider (not shown) in the heating unit 6 and can reciprocate in the width direction of the metal plate 21.

  In the heat treatment, the heating unit 6 brazes the brazing material powder 2 fixed to the metal plate 21 by irradiating the laser beams L of a plurality of laser irradiation apparatuses 10 at once across the width direction of the metal plate 21. The material powder 2 is heated to a temperature near the melting point (for example, 1080 ° C.). At this time, it is preferable that the laser beam L of each laser irradiation apparatus 10 is the same output.

The plurality of laser irradiation devices 10 collect high-power laser light L by an optical system 12 provided in each laser irradiation device 10 and irradiate the brazing material powder 2 fixed to the metal plate 21. Heat up rapidly.
The plurality of laser irradiation apparatuses 10 are connected to the joining member 15 and are integrally formed in the width direction of the metal plate 21 by the movement of the joining member 15 along a slide or the like provided in the heating unit 6. The laser beam L is irradiated while reciprocating at a constant width.
Therefore, it is possible to irradiate the laser beam L to a portion between the laser irradiation apparatus 10 and another laser irradiation apparatus 10 where the laser is not irradiated. Furthermore, by using the joining member 15, the reciprocation of each laser irradiation apparatus 10 can be performed by one control.

Since the brazing powder 2 fixed to the metal plate 21 is transported on the line itself, the irradiation position of the laser light L irradiated over the width direction gradually shifts in the transport direction. The laser beam L is irradiated over the entire brazing material powder 2 fixed to the metal plate 21.
When irradiating the laser beam L over the entire width of the metal plate 21, the reciprocation distance of each laser irradiation apparatus 10 is compared with the case of reciprocating movement by the single laser irradiation apparatus 10 shown in the first embodiment. Since the short distance is sufficient, the brazing powder 2 fixed to the metal plate 21 can be sufficiently heated even if the conveying speed of the brazing powder 2 fixed to the metal plate 21 is increased. Therefore, the production efficiency of the brazing material sheet 1 can be increased.

  Therefore, according to 2nd Embodiment of this invention, the laser irradiation apparatus 10 employ | adopts the structure that it is provided with two or more across the width direction of the metal plate 21, and it extends over the width direction of the metal plate 21 at once. Laser light L can be irradiated. Therefore, the heat treatment can be performed efficiently and the heating process can be shortened.

  Moreover, according to 2nd Embodiment of this invention, the laser irradiation apparatus 10 provided with two or more is employ | adopted as the structure which moves to the width direction of the metal plate 21, and the laser irradiation apparatus 10, The laser beam L can be irradiated to a portion that is between the other laser irradiation devices 10 and is not irradiated with the laser. Further, since the reciprocating distance of the integrated laser irradiation device 10 may be shorter than the reciprocating motion of one laser irradiation device 10, the brazing material powder 2 fixed to the metal plate 21 is conveyed. You can increase the speed. Therefore, the production efficiency of the brazing material sheet 1 can be increased. Furthermore, since the reciprocating movement of each laser irradiation apparatus 10 can be performed by one control by using the joining member 15, there is an effect that the controllability is improved as compared with the case where each laser irradiation apparatus 10 is controlled independently. .

(Third embodiment)
FIG. 4 shows a configuration diagram of the manufacturing apparatus D for the brazing material sheet 1 in the third embodiment of the present invention.
Hereinafter, the third embodiment will be described, but the description of the parts having the same configuration as the first embodiment will be omitted.

  The manufacturing apparatus D measures the temperature of the irradiated portion of the laser beam L from the laser irradiation apparatus 10 and controls the irradiation energy of the laser beam L of the laser irradiation apparatus 10 based on the measurement result. The apparatus 31 is configured to include the apparatus 31.

  The temperature measuring device 30 is arranged at a certain distance from the irradiation point of the laser beam L, and is configured to measure the temperature of the irradiated portion on the brazing powder 2 irradiated with the laser beam L. The temperature measuring device 30 preferably uses, for example, a radiation thermometer that measures the temperature by measuring the intensity of infrared rays emitted from an object (the brazing powder 2 fixed to the metal plate 21).

  The control device 31 is configured to adjust the irradiation energy amount of the laser light L of the laser irradiation device 10 based on the temperature measurement result of the temperature measurement device 30.

  In the heat treatment, the heating unit 6 irradiates the laser beam L toward the brazing powder 2 fixed to the metal plate 21 from the laser irradiation device 10. The temperature measuring device 30 measures the temperature of the irradiated portion on the brazing powder 2 fixed to the metal plate 21 irradiated with the laser beam L. Based on the measurement result, the control device 31 adjusts the amount of irradiation energy of the laser beam L of the laser irradiation device 10, and the brazing material powder 2 fixed to the metal plate 21 is melted into the melting point (for example, 1080). C.) and is sintered or melted.

  Therefore, according to the third embodiment of the present invention, based on the temperature measurement device 30 that measures the temperature of the brazing powder 2 irradiated with the laser light L of the laser irradiation device 10 and the measurement result of the temperature measurement device 30. By adopting the configuration of having the control device 31 that adjusts the irradiation energy amount of the laser light L, based on the measurement result of the temperature of the heated brazing powder 2, the laser light L suitable for the heat treatment Heat treatment can be performed with an irradiation energy amount. Therefore, highly accurate temperature control becomes possible, and the heating characteristics can be improved.

  As mentioned above, although preferred embodiment of this invention was described referring drawings, this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the said embodiment, the laser irradiation apparatus 10 demonstrated having the optical fiber 11 which transmits the laser beam L. FIG. However, the present invention can also be applied to the laser irradiation apparatus 10 that is not configured to transmit the laser light L through the optical fiber 11.

Further, for example, in the above embodiment, it has been described that the laser irradiation apparatus 10 moves in the width direction of the metal plate 21. However, the present invention is not necessarily limited to the configuration in which the laser irradiation device 10 moves in the width direction of the metal plate 21.
The present invention may be configured such that, for example, the laser irradiation apparatus 10 irradiates the laser beam L linearly or in a planar shape with an area extending over the width of the metal plate 21. Alternatively, a configuration may be employed in which a plurality of laser irradiation devices 10 are used, the laser beams L are arranged in a line in the width direction of the metal plate 21 without gaps, and the laser light L is irradiated in a line. Furthermore, the laser irradiation apparatus 10 may be provided in a plurality of stages, and the laser light L may be irradiated in multiple stages.
Even if it is the said structure, the laser beam L can be irradiated over the whole brazing material powder 2 adhering to the metal plate 21. FIG.

  Further, in the second embodiment, it has been described that a plurality of laser irradiation devices 10 are integrally moved in the width direction of the metal plate 21. However, in the present invention, each laser irradiation device 10 is independently a metal plate. You may reciprocate by a fixed width in the width direction of 21.

Further, in the present invention, as indicated by a two-dot chain line in FIG. 1, the heating unit 6 is the brazing material powder fixed to the metal plate 21 in the conveying direction of the metal plate 21 and behind the laser irradiation device 10. It is possible to adopt a configuration in which the second laser irradiation apparatus 10 ′ that irradiates the laser beam L 2 is provided.
By adopting such a configuration, in the present invention, the second laser irradiation apparatus 10 ′ provided at the back side supplements the portion that could not be sufficiently heated by the first laser light L irradiation. Can be heated. Therefore, there is an effect that heating can be efficiently performed by dividing the heat treatment into two stages.

Moreover, in the said embodiment, the manufacturing apparatus D demonstrated that the clad layer 22 of the brazing material sheet 1 was formed over the whole surface of the single side | surface of the metal plate 21. FIG. However, the manufacturing apparatus D of the present invention can also form the clad layer 22 over the entire surface of both surfaces of the metal plate 21.
In this case, the manufacturing apparatus D operates the hopper 3B shown in FIG. 1 and the belt feeder 5B, and supplies the brazing material powder 2 to the peripheral surface of the rolling roller 4B, whereby the clad layers 22 are formed on both surfaces of the metal plate 21. Can be formed.
Accordingly, the heating unit 6 irradiates the brazing material powder 2 fixed on both sides of the metal plate 21 with the laser light L, so that a laser irradiation device is provided above and below the metal plate 21 inserted in the heating unit 6. 10 is preferably used for heat treatment.
In addition, in the manufacturing apparatus D, a mechanism for adjusting the thickness (supply amount) of the brazing powder 2 supplied onto the rolling roller 4A may be provided.

It is a block diagram of the manufacturing apparatus of the brazing material sheet in 1st Embodiment of this invention. It is a sectional side view of the heating part in 1st Embodiment of this invention. It is a sectional side view of the heating part in 2nd Embodiment of this invention. It is a block diagram of the manufacturing apparatus of the brazing material sheet in 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Brazing material sheet, 2 ... Brazing material powder (powder), 4A, 4B ... Rolling roller, 6 ... Heating part, 10 ... Laser irradiation apparatus, 21 ... Metal plate (base material), 30 ... Temperature measuring device, 31 ... Control device

Claims (6)

An apparatus for producing a brazing material sheet, comprising: a rolling roller for fixing a powder having a brazing material composition on at least one surface of a sheet-like substrate; and a heating unit for sintering or melting the powder by heating. ,
The said heating part has a laser irradiation apparatus which irradiates a laser beam to the said powder fixed to the said base material, The manufacturing apparatus of the brazing material sheet | seat characterized by the above-mentioned.   The brazing material sheet manufacturing apparatus according to claim 1, wherein the laser irradiation device moves in a width direction of the base material.   3. The brazing material sheet manufacturing apparatus according to claim 1, wherein a plurality of the laser irradiation devices are provided across a width direction of the base material.   4. The brazing material sheet manufacturing apparatus according to claim 3, wherein a plurality of the laser irradiation apparatuses integrally move in the width direction of the base material. 5.   The heating unit includes a second laser irradiation device that irradiates laser light to the powder fixed to the base material in the transport direction of the base material and behind the laser irradiation device. The brazing material sheet manufacturing apparatus according to any one of claims 1 to 4. A temperature measuring device for measuring the temperature of the powder irradiated with the laser beam of the laser irradiation device;
The brazing material sheet manufacturing apparatus according to claim 1, further comprising a control device that adjusts an irradiation energy amount of the laser light based on a measurement result of the temperature measuring device.

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