JP3316916B2 - Winding method of metal plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb structure made of a metal plate for use as a catalyst carrier for purifying exhaust gas of automobiles and various combustion devices, for filtering various fluids, and for rectifying various fluids. The present invention relates to a method for winding a metal plate suitable for manufacturing.

[0002]

2. Description of the Related Art As a carrier of a noble metal catalyst for purifying an exhaust gas of an automobile, a honeycomb body made of a stainless steel plate or the like is excellent in exhaust resistance and thermal efficiency as compared with a ceramic honeycomb body such as cordierite. Attention has been paid to, for example, Japanese Patent Application Laid-Open No. 3-71918 and Japanese Patent Application Laid-Open No. 2-241614 as disclosed in Japanese Patent Application Laid-Open No. Hei 2-241614. Discloses a winding method for forming a honeycomb body.

FIGS. 13 and 14 are schematic explanatory views of a winding device which is an embodiment for carrying out a method of winding a honeycomb body disclosed in Japanese Patent Application Laid-Open No. 3-71918. . As shown in FIG. 13, conventionally, when the flat plate 5 and the corrugated plate 6 are overlapped and wound upon manufacturing the honeycomb body 7, the corrugated plate at the center of the formed honeycomb body is crushed according to the winding. In order to eliminate the problem, the tension applied to the flat plate wound on the honeycomb body is made constant by the disc brake 10 or the like, or the axial torque of the winding center axis of the honeycomb body is made constant (as the outer diameter of the honeycomb body becomes larger, the honeycomb body becomes larger). (The tension applied to the flat plate is gradually reduced).

[0004]

However, when winding is performed while keeping the tension applied to the flat plate wound on the honeycomb body constant, as the winding radius of the honeycomb body increases, the distance from the center of the honeycomb body toward the outer periphery increases. The contact surface pressure between the flat plate and the corrugated plate decreases toward.

The principle that the contact pressure between the flat plate and the corrugated sheet decreases from the center of the honeycomb body toward the outer periphery will be described. First, FIG. 15 shows a schematic sectional view of a honeycomb body formed in a columnar shape. In FIG. 15, the radius r of the honeycomb body
For 1 and r2, consider a sector with a central angle θ about the winding center O of the honeycomb body as the center of rotation. Here, FIG. 16 shows a cylindrical honeycomb body partially taken up along the fan shape shown in FIG. As can be understood from FIG. 16, when the radius of the honeycomb body increases from r1 to r2, the corresponding area s1 in the outer peripheral portion M1 becomes equal to the area s2 in the outer peripheral portion M2.
To increase. When the radius of the honeycomb body is r1, the outer peripheral portion M1
When the tension T1 of the flat plate is applied, and when the radius of the honeycomb body is r2, when the tension T2 is applied to the outer peripheral portion M2, T1 = T2
In the case of, a force F directed toward the center (side OO ') of the honeycomb body acts on both the outer peripheral portions M1 and M2. A value obtained by dividing the force F by the areas s1 and s2 of the outer peripheral portions M1 and M2 is an average contact surface pressure at the outer peripheral portions M1 and M2, respectively. Therefore, the average contact surface pressure N1 at the outer peripheral portion M1 is N1 = (F / s1), and the average contact surface pressure N2 at the outer peripheral portion M2 is N2 = (F / s2). From s1 <s2, (F / s1) <(F / s2), and N1> N2. That is, when the tension T is constant, the outer peripheral portion M2 of the honeycomb body
Is smaller than the average contact surface pressure N1 at the outer peripheral portion M1. From this, the tension T
It can be seen that when the constant is constant, the contact surface pressure between the flat plate and the corrugated sheet becomes smaller at the outer peripheral portion of the honeycomb body.

[0006] As described above, when the contact surface pressure between the flat plate and the corrugated sheet decreases from the center of the honeycomb body toward the outer periphery, when the flat plate and the corrugated sheet are joined by diffusion bonding, the contact surface pressure decreases. The bonding strength by diffusion bonding is also weakened, and as a result, the high-temperature durability is deteriorated at the outer peripheral portion of the honeycomb body having low bonding strength, and there is a possibility that the honeycomb body may slip off. The bonding strength referred to here is a value obtained by normalizing the load applied to one honeycomb body by dividing the load by the number of contacts between the flat plate and the corrugated plate included in the layer. FIG. 12 shows a method for measuring the bonding strength. Honeycomb body 40 subjected to diffusion heat treatment and diffusion bonded
Is sandwiched between a punch 41 and a die 42 to form a honeycomb body 40.
Is applying a load. The difference between the outer diameter of the punch 41 and the inner diameter of the die 42 corresponds to one corrugated plate sandwiched between the flat plates of the honeycomb body. Also, as the winding radius of the honeycomb body increases when winding is performed with the tension of the flat plate kept constant,
Corrugation of the corrugated sheet occurs at the center of the honeycomb body.

The present invention has been made in view of such circumstances, and increases the tension applied to a metal plate wound around a honeycomb body as the radius of the honeycomb body increases, so that the flat plate and the wave in the diffusion bonding are increased. An object of the present invention is to ensure sufficient bonding strength of a plate and prevent the honeycomb body from slipping and dropping.

[0008]

SUMMARY OF THE INVENTION A method for winding a metal plate according to the present invention is a method for winding a metal plate to form a cylindrical honeycomb body by superposing and winding a metal flat plate and a metal corrugated plate. Wherein the tension applied to the metal plate wound around the honeycomb body is increased with the winding.
(Hereinafter, this is referred to as the first invention.) A method for winding a metal plate according to the present invention is a method for winding a metal plate that forms a cylindrical honeycomb body by superposing and winding a flat metal plate and a corrugated metal plate. In the winding method, the winding is performed while holding the end face of the formed honeycomb body, and the tension applied to the metal plate wound on the honeycomb body is increased. (Hereinafter, this is referred to as a second invention.) A method for winding a metal plate according to the present invention is a method for winding a metal plate that forms a cylindrical honeycomb body by superposing and winding a flat metal plate and a corrugated metal plate. In the winding method, the winding is performed while holding the contact portion between the flat plate and the corrugated plate of the formed honeycomb body so as not to be displaced by welding, and increasing the tension applied to the metal plate wound on the honeycomb body. It is characterized by going. (Hereinafter, this is referred to as the third invention.)

[0009]

The operation of the first invention will be described. A metal flat plate and a metal corrugated plate are overlapped and wound to form a columnar honeycomb body. FIG. 15 shows a schematic end view of a honeycomb body formed in a columnar shape. In FIG. 15, regarding the radii r1 and r2 of the honeycomb body, a sector having a central angle θ about the winding center O of the honeycomb body as a rotation center is considered. Here, FIG. 16 shows a cylindrical honeycomb body partially taken up along the fan shape shown in FIG. As will be appreciated from FIG.
When the radius of the honeycomb body increases from r1 to r2, the corresponding area s1 at the outer peripheral portion M1 becomes equal to the area s at the outer peripheral portion M2.
Increase to 2. Here, with the winding of the honeycomb body,
Increasing the tension applied to the metal plate wound on the honeycomb body means that, when the radius of the honeycomb body is r1, the tension T1 of the flat plate is applied to the outer peripheral portion M1 and the radius r of the honeycomb body is increased.
2, when tension T2 is applied to the outer peripheral portion M2, T1 <
In this case, the force f toward the center (side OO ') of the honeycomb body acts on the outer peripheral portion M1, and the outer peripheral portion M2
A force F directed toward the center (side OO ′) of the honeycomb body acts. At this time, f <F from T1 <T2. These forces f and F are applied to the corresponding peripheral areas M1, M2 in the area s1,
What is divided by s2 is the average contact surface pressure at the outer peripheral portions M1 and M2, respectively. Accordingly, the average contact surface pressure N1 at the outer peripheral portion M1 is N1 = (f / s1), and the average contact surface pressure N2 at the outer peripheral portion M2 is N2 = (F / s2). That is, when the radius of the honeycomb body increases from the radius r1 to the radius r2 in accordance with the winding of the honeycomb body, the area of the outer peripheral portion of the honeycomb body increases as s1 <s2, while the tension also becomes f.
By increasing as in <F, the contact surface pressure N2 can be prevented from becoming smaller than the contact surface pressure N1. From the above,
When a cylindrical honeycomb body is formed by superposing and winding a metal flat plate and a metal corrugated sheet, the outer peripheral portion of the cylindrical honeycomb body also becomes larger with the winding, and naturally the outer peripheral portion of the honeycomb body is formed. The area also increases. Therefore, when the tension of the metal plate wound around the honeycomb body is increased with the winding of the honeycomb body, the force of the tension exerted on the outer periphery of the honeycomb body increases, and therefore, the outer periphery of the honeycomb body of the tension is increased. The force (contact surface pressure) per unit area in (1) does not decrease (decrease).

The operation of the second invention will be described. When a cylindrical honeycomb body is formed by superposing and winding a metal flat plate and a metal corrugated sheet, the outer peripheral portion of the cylindrical honeycomb body also becomes larger with the winding, and naturally the outer peripheral portion of the honeycomb body is formed. The area also increases. Therefore, when the tension of the metal plate wound around the honeycomb body is increased with the winding of the honeycomb body,
The force of the tension exerted on the outer peripheral portion of the honeycomb body is increased, so that the force (contact surface pressure) exerted on the outer peripheral portion of the honeycomb body per unit area (contact surface pressure) does not decrease (decrease). Furthermore, by winding while holding the end face of the formed honeycomb body, the tension applied to the metal plate wound on the honeycomb body is harder to reach inside than the holding portion of the honeycomb body end face, and the increase and decrease of the tension are reduced. It is always received at the outer peripheral portion of the formed honeycomb body.

The operation of the third invention will be described. When a cylindrical honeycomb body is formed by superposing and winding a metal flat plate and a metal corrugated sheet, the outer peripheral portion of the cylindrical honeycomb body also becomes larger with the winding, and naturally the outer peripheral portion of the honeycomb body is formed. The area also increases. Therefore, when the tension of the metal plate wound around the honeycomb body is increased with the winding of the honeycomb body,
The force of the tension exerted on the outer peripheral portion of the honeycomb body is increased, so that the force (contact surface pressure) exerted on the outer peripheral portion of the honeycomb body per unit area (contact surface pressure) does not decrease (decrease). Furthermore, by winding the formed honeycomb body while temporarily holding the flat plate and the corrugated sheet by welding, the tension applied to the metal plate wound on the honeycomb body is increased from the temporarily fixed holding section of the flat plate and the corrugated sheet to the inside. In addition, the outer peripheral portion of the formed honeycomb body is constantly receiving an increasing change in the tension.

[0012]

【Example】

(Embodiment 1) First, FIGS. 1 and 2 show schematic structural explanatory views of a winding device used in the present embodiment. This winding device
A flat plate feeding roller 1, a base roller 2, a winding roller 3, a control device 4, guide rollers 21, 22,
23 mainly.

A disk 8 is coaxially fixed to the flat plate feeding roller 1, and the disk 8 is provided with a disk brake 10. The disk 8 rotates at the same time as the flat plate feeding roller 1, and the rotation of the flat plate feeding roller 1 is controlled via the disk 8 according to the driving state of the disk brake 10.

The base roller 2 is equipped with a load cell (not shown) for detecting the tension of the fed flat plate 5.
When the flat plate 5 is wound over the corrugated plate 6 via the guide rollers 21, 22 and 23, the tension of the flat plate 5 is measured and information is sent to the control device 4.

The take-up roller 3 is connected to a rotating shaft of a motor 30 and is driven to rotate by the motor 30 and has a mechanism for holding both end faces of the honeycomb body. Here, schematic explanatory views of the winding roller 3 are shown in FIGS. The winding roller 3 includes a winding shaft 12, a holding disk 1,
3, mainly composed of a holding ring 14 and rubber materials 15A and 15B. A motor 30 is mounted on the winding shaft 12.
The rotation shafts are coupled to each other, and driven by the motor 30 to rotate the winding roller 3. The holding disk 13 is a holding disk for holding the end face of the honeycomb body 7 and has the same rotation center as the winding shaft 12. Further holding disc 13
Has a non-contact type optical sensor 11. The non-contact optical sensor 11 measures the diameter of the honeycomb body 7. The holding ring 14 has the same rotation center as the winding shaft 12, and is a ring for holding the flat plate and the corrugated plate by pressing the end face of the honeycomb body 7. It moves on the winding shaft 12 (not shown) in parallel with the axial direction. Thereby, as the honeycomb body is formed as the winding roller 3 rotates, the winding shaft 1
The honeycomb ring is held by sequentially pressing the end faces of the honeycomb body from the holding ring closer to 2. As described above, by pressing and holding the end surface of the honeycomb body, the position where the flat plate and the corrugated plate of the formed honeycomb body overlap can be prevented from being shifted. This time, the holding width (ring width) of one holding ring for holding the end face of the honeycomb body was 4 mm, and the holding ring was combined in 12 steps.

The rubber members 15A and 15B are
It is bonded to the surface of the holding ring 14 and holds the flat plate of the honeycomb body and the corrugated plate so that the overlapped relative position does not shift in the overlapping direction, and the flat plate and the corrugated plate are shifted and overlap on the end face of the honeycomb body. Collapse is also prevented at the same time.

The control device 4 changes with the rotation of the winding roller 3 and changes the honeycomb body radius and the number of holding rings (hereinafter, referred to as the number of holding rings pressing the end face of the honeycomb body in order from the holding ring on the side close to the winding shaft 12). , The number of holding rings) and a signal relating to the tension applied to the flat plate measured by the base roller 2. Further, the control device 4 is a hydraulic system (not shown) for the retaining ring.
To output a signal to activate the retaining ring to
Further, in response to the input signal, a predetermined tension value (hereinafter, referred to as a reference value) and a tension measured by the base roller 2 are calculated according to the radius of the honeycomb body and the number of holding rings. This is a device that outputs a signal for adjusting the driving state of the disc brake 10 for comparison.

That is, as the radius of the input honeycomb body increases with the rotation of the take-up roller 3, the control device 4 controls the control unit 4 so that the outer diameter of the honeycomb body does not exceed the outer diameter of the honeycomb body.
The relationship between the radius of the honeycomb body and the number of holding rings is set in advance so that the end face of the honeycomb body is pressed and held sequentially by the holding ring and the rubber material. Then, the control device 4 outputs a signal to the hydraulic system so that the number of holding rings set in advance based on the inputted honeycomb body radius is maintained.

Further, when the control device 4 reaches a preset radius of the honeycomb body, the control device 4 confirms that the holding number of the holding ring is in the set state,
If the tension applied to the flat plate is larger than the reference value while comparing the tension measured by the base roller 2 with the reference value, the tension is measured by the base roller 2 so as to output a signal to weaken the braking force of the disc brake 10. When the tension of the flat plate is smaller than the reference value, a signal is output so as to increase the braking force of the disc brake 10.

In the winding device configured as described above,
A flat belt 5 in the form of a foil is wound around the flat plate feeding roller 1, and the flat plate 5 passes through the base roller 2 from the guide rollers 21 and 22, and is supplied from the guide roller 23 to the winding roller 3. Further, a corrugated sheet 6 is supplied to the winding roller 3 from a supply source (not shown), and the flat plate 5 and the corrugated sheet 6 are superposed and wound on the winding roller 3. During winding, tension is generated on the flat plate 5 by the pulling force from the winding roller 3, the pressing and holding of the end face of the honeycomb body by the holding ring and the rubber material, and the braking force by the disc brake 10.

Using the above apparatus, iron is used as a base material,
From flat and corrugated sheets occupying 0 wt% and aluminum 5 wt%,
The tension acting on the flat plate 5 fed from the flat plate feeding roller 1 is increased each time the holding ring is sequentially pressed and held from the central axis of the honeycomb body to the outer peripheral part within a range not exceeding the outer diameter of the honeycomb body. This was wound up to produce a honeycomb body having a diameter of 89 mm. At this time, the sheet thickness was 50 μm, the wave height of the corrugated sheet was 1.3 mm, and the wave pitch was 2.6 mm. The thus-obtained honeycomb body was subjected to diffusion heat treatment (implemented at 1200 ° C. for 1 hour) in vacuum to perform diffusion bonding.

FIG. 5 shows the relationship between the tension acting on the flat plate 5 and the radius of the wound honeycomb body at this time, and further shows the bonding strength between the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body. 6 is shown in FIG. 5 and 6, as the radius r of the honeycomb body becomes larger, the joining strength is maintained within a substantially constant width in the radial direction of the honeycomb body by increasing the tension t while operating the retaining ring. This is because, when the honeycomb body is formed, the flat plate and the corrugated plate of the formed honeycomb body are wound up while being held at the end face of the honeycomb body according to the winding, so that the flat plate and the corrugated plate are fixed to the holding portion and the flat plate feeding roller. Between the center of the honeycomb body and the outer periphery of the honeycomb body by increasing the tension as the radius of the formed honeycomb body increases. It is presumed that the contact surface pressure between the flat plate 5 and the corrugated plate 6 toward the portion is kept within a substantially constant width in the radial direction of the honeycomb body. Also, as in the case of increasing the tension of the flat plate wound on the honeycomb body, as the radius of the formed honeycomb body increases, the honeycomb sheet is wound on the honeycomb body within a range where the corrugated sheet does not expand or collapse. It goes without saying that increasing the tension of the corrugated plate can also prevent the contact surface pressure between the flat plate 5 and the corrugated plate 6 from decreasing from the center of the honeycomb body toward the outer periphery.

The honeycomb body manufactured by gradually increasing the tension in this manner was subjected to a cooling / heating cycle test. The test condition of the cooling / heating cycle test was to hold in an exhaust gas having a maximum temperature of 900 ° C. for 9 minutes and then hold at 150 ° C. for 9 minutes as one cycle. As a result, even after 600 cycles, the flat plate and the corrugated plate did not slip off.

Example 2 Using the same winding device as in Example 1, a honeycomb body was manufactured by steplessly increasing the tension of the flat plate with the winding. However, only the rubber material 15B of the winding roller 3 of the first embodiment shown in FIG.
Changed to In FIG. 7, the rubber material is fixed to the outermost holding ring, and the rubber material follows the elasticity of the rubber material in accordance with the movement of the holding ring that sequentially presses the end face of the honeycomb body from the holding ring closer to the winding shaft 12. Thus, the flat plate and the corrugated plate of the formed honeycomb body can be held steplessly. Further, by pressing and holding the end face of the honeycomb body as described above, the overlapping position of the flat plate and the corrugated plate of the formed honeycomb body can be prevented from shifting.

At this time, as the radius of the honeycomb body increases, the end face of the honeycomb body is held as much as possible within a range not exceeding the outer diameter of the honeycomb body by a holding ring and a rubber material, and the radius of the honeycomb body increases. The value set in advance for the tension applied to the flat plate wound in accordance with the above is used as a reference value.

Here, as in the first embodiment, a signal relating to the radius of the honeycomb body is input to the control device 4.
It is confirmed that a signal regarding the number of holding rings to be simultaneously inputted is at a predetermined number of holding rings as the honeycomb body radius increases. Next, the control device 4 compares the input signal regarding the tension applied to the flat plate measured by the base roller 2 with a reference value. When the tension of the flat plate measured by the base roller 2 is smaller than the reference value, a signal is output so as to increase the braking force of the disc brake 10 so as to output a signal to reduce the braking force.

The materials and shapes of the flat plate and corrugated plate used in the production and the conditions for the diffusion heat treatment are all the same as in the first embodiment.

FIG. 8 shows the relationship between the tension acting on the flat plate 5 and the radius of the wound honeycomb body at this time, and the bonding strength between the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body. Is shown in FIG. 8 and 9, as the radius r of the honeycomb body increases, the flat plate and the corrugated plate of the honeycomb body are steplessly held, and the tension t is steplessly increased to join the flat plate and the corrugated plate. The strength is kept almost constant in the radial direction of the honeycomb body. This is presumed that the contact surface pressure between the flat plate and the corrugated plate was kept substantially constant in the radial direction of the honeycomb body. When the manufactured honeycomb body was subjected to a cooling / heating cycle test (under the same conditions as in Example 1), the same effect as in Example 1 was obtained.

(Embodiment 3) The materials and shapes of the flat plate and the corrugated plate are all the same as those of the first embodiment. Instead of pressing and holding, spot welding is performed every three layers during winding to temporarily hold the flat plate and the corrugated plate, and the tension acting on the flat plate 5 as shown in FIG. The honeycomb body was wound up in relation to the radius of the honeycomb body thus obtained. Also here, by holding the flat plate and the corrugated plate of the formed honeycomb body by temporary fixing by spot welding, the position where the flat plate of the formed honeycomb body and the corrugated plate are overlapped can be prevented from shifting. Diffusion bonding was performed in the same manner as in Example 1 except for the conditions of the diffusion heat treatment. When the manufactured honeycomb body was subjected to a thermal cycle test, the same effect as in Example 1 was obtained.

(Comparative Example) At the time of winding the honeycomb body, the flat body and the corrugated plate forming the honeycomb body were not held, and the honeycomb body was wound at a constant tension (tension of 4.4 kgf). At this time,
When forming a honeycomb body having an outer shape of 89 mm, the tension is 4.4.
kgf was the limit value at which the corrugated sheet could not be crushed. FIG. 10 shows a relationship between the radius of the honeycomb body and the contact surface pressure when the flat plate is wound with a constant tension (t = 4.4 kgf). As the honeycomb body radius increases, the contact surface pressure between the flat plate and the corrugated plate decreases. FIG. 11 shows the relationship between the honeycomb body radius and the bonding strength when the honeycomb body of FIG. 10 is further subjected to diffusion heat treatment in vacuum (under the same conditions as in Example 1). As the radius of the honeycomb body increases, the bonding strength between the flat plate and the corrugated plate decreases. Thus, the tension is constant (tension 4.4 kg).
The honeycomb body manufactured in f) was subjected to a cooling / heating cycle test (the same conditions as in Example 1). As a result, the shift between the flat plate and the corrugated plate already occurred around 150 cycles.

[0031]

According to the method of winding a metal plate which forms a cylindrical honeycomb body by superposing and winding a flat metal plate and a corrugated metal plate, the metal plate wound around the honeycomb body with the winding By increasing the tension applied to the honeycomb body, a sufficient contact surface pressure can be obtained even at the outer peripheral portion of the formed honeycomb body, and as a result, the formed honeycomb body can be diffused and bonded to the outer peripheral portion of the honeycomb body. In this case, a sufficient bonding strength can be obtained, and a honeycomb body excellent in high-temperature durability without displacement of the honeycomb body at the outer peripheral portion can be obtained.

[Detailed description of drawings]

FIG. 1 is a plan view illustrating a schematic configuration of a winding device used in an embodiment of the present invention.

FIG. 2 is a front view illustrating a schematic configuration of a winding device used in one embodiment of the present invention.

FIG. 3 is a plan view illustrating a schematic configuration of a winding roller 3.

FIG. 4 is a front view illustrating a schematic configuration of a take-up roller 3 (a holding plate 13 side).

FIG. 5 is a graph showing the relationship between the tension acting on the flat plate 5 and the radius of the wound honeycomb body.

FIG. 6 is a graph showing the relationship between the bonding strength between the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body.

FIG. 7 is a plan view illustrating an installation structure of a rubber material of a winding roller 3 in the winding device used in one embodiment of the present invention.

FIG. 8 is a graph showing the relationship between the tension acting on the flat plate 5 and the radius of the wound honeycomb body.

FIG. 9 is a graph showing the relationship between the bonding strength between the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body.

FIG. 10 is a graph showing the relationship between the contact surface pressure acting on the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body (constant tension).

FIG. 11 is a graph (constant tension) showing the relationship between the bonding strength between the flat plate 5 and the corrugated plate 6 and the radius of the wound honeycomb body.

FIG. 12 is a front view showing a method for measuring the bonding strength of a honeycomb body using a punch and a die.

FIG. 13 is a plan view illustrating a schematic configuration of a conventional honeycomb body winding device.

FIG. 14 is a front view illustrating a schematic configuration of a conventional honeycomb body winding device.

FIG. 15 is a schematic end view of a honeycomb body.

FIG. 16 is a diagram partially showing a honeycomb body.

[Explanation of symbols]

 5 Flat plate 6 Corrugated plate 7 Honeycomb body

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21D 47/00 B01D 53/86 B01J 35/04 B32B 3/12 B32B 15/01

Claims (3)

(57) [Claims] 1. A method of winding a metal plate, wherein a metal flat plate and a metal corrugated sheet are superposed and wound to form a columnar honeycomb body, the metal plate being wound on the honeycomb body with the winding. A method for winding a metal plate, wherein the tension applied to the metal plate is increased. 2. A method of winding a metal plate in which a metal flat plate and a metal corrugated plate are overlapped and wound to form a columnar honeycomb body, and the end face of the formed honeycomb body is wound with the winding. A method for winding a metal plate, wherein the winding is performed while being held, and the tension applied to the metal plate wound around the honeycomb body is increased. 3. A method for winding a metal plate in which a metal flat plate and a metal corrugated plate are overlapped and wound to form a columnar honeycomb body. A method for winding a metal plate, comprising: winding while holding a contact portion of a corrugated plate so as not to be displaced by welding; and increasing a tension applied to the metal plate wound on the honeycomb body.