JP2000079428A - Method for producing catalyst support material - Google Patents

Abstract

(57) [Summary] [Problem] It is possible to perform a long-term continuous processing of a columnar catalyst support material in which a metal foil is wound, accompanying mass production.
It is an object of the present invention to provide a technology capable of promptly responding to the production of a wide variety of catalyst support materials. SOLUTION: In a method for producing a columnar catalyst support material formed by overlapping and winding a flat metal foil and a corrugated metal foil, when the flat metal foil and the corrugated metal foil are overlapped with each other, A method for producing a columnar catalyst carrier material, characterized in that a portion where the side end portions of both foils are in contact with each other is welded by a laser, and the integrated foils are wound up in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a technique relating to a method for producing a catalyst carrier material.

[0002]

2. Description of the Related Art Hitherto, when manufacturing a deodorizing and burning catalytic device, a honeycomb type catalyst carrier material formed by winding a metal foil holding a catalytic metal into a cylindrical shape has been widely used. The reason for forming the honeycomb-type catalyst carrier material by winding the metal foil in this manner is that processing is easy and that a gas passage channel can be easily formed by imparting a corrugated shape to the metal foil.

When a metal foil is rolled up to form a columnar catalyst support material, it is usually formed by laminating and rolling a flat metal foil and a corrugated metal foil. This is because, when only the corrugated metal foil is rolled up to form a columnar catalyst support material, the corrugated shape imparted to the metal foil is nested at the time of rolling up, making it impossible to form a gas passage channel. Therefore, the nesting of the corrugated metal foils is prevented by overlapping and winding the flat metal foil as the spacer and the corrugated metal foil.

[0004] However, even when the flat metal foil and the corrugated metal foil are superimposed and wound, if the two foils are simply overlapped and wound, the slippage occurs and accurate winding cannot be performed, resulting in an uneven winding state. Is generated. When such an uneven entrained state occurs, it causes loss of pressure of the passing gas pressure required for the catalyst carrier and variation in the passing linear velocity. Therefore, conventionally, when a flat metal foil and a corrugated metal foil are rolled in, the flat metal foil and the corrugated metal foil are integrated by welding before the rolling, and then the rolling operation is performed. .

[0005]

At present, the so-called resistance welding method is used for welding metal foils to each other by melting and joining metal contact portions by utilizing the electrical resistance of the metal. . In this resistance welding method, a flat metal foil and a corrugated metal foil are superposed,
The electrode for resistance welding is brought into contact with a part of the both sides thereof and is pressed and melt-bonded in the longitudinal direction of the metal foil. In the case where the metal foils are joined to each other by resistance welding as described above, the electrodes are inevitably consumed, so that they are not suitable for long-term continuous processing accompanying mass production. In addition, it is necessary to appropriately change the welding current in accordance with the thickness of the metal foil to be overlapped, and there is room for improvement in terms of work in manufacturing a wide variety of catalyst carrier materials.

The present invention has been made in view of the above circumstances. In a method of manufacturing a cylindrical catalyst support material by winding a metal foil, a long-term continuous processing accompanying mass production can be performed, and a wide variety of products can be manufactured. It is an object of the present invention to provide a technology capable of promptly responding to the production of a catalyst carrier material.

[0007]

According to the present invention, there is provided a method for producing a columnar catalyst support material formed by superimposing and winding a flat metal foil and a corrugated metal foil. When the flat metal foil and the corrugated metal foil were overlapped with each other, the portions where the side edges of the two foils were in contact with each other were welded with a laser to wind the two integrated foils in the longitudinal direction. According to the present invention, a laser is applied to the side end in contact with the superposed metal foils, and the side end is welded.Therefore, there is no consumption of the electrode material as occurs during resistance welding, It is possible to continuously produce the catalyst support material for a long period of time. In addition, even when the thickness of the metal foil is changed, welding can be performed without changing the laser output.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. 1 and 2 are principle views showing a method for producing a columnar catalyst carrier material according to the present embodiment. FIG. 3 shows a cylindrical catalyst carrier material 3 formed by a flat metal foil 1 and a corrugated metal foil 2.

The metal foil used in this embodiment is a stainless steel foil (Fe
-20% Cr-5% Al-0.08%). FIG.
As shown in the figure, when the flat metal foil 1 and the corrugated metal foil 2 are overlapped, the side end 4 of the flat metal foil 1
A contact portion 5 is formed in which the contact portion 5 contacts the side end 9 of the corrugated metal foil 2. A laser 6 (class 4 laser, Nd / YAG, 106
The contact portion 5 was melt-bonded by irradiating 4 nm, a pulse of 0.3 to 10 ms) toward both ends.

More specifically, as shown in FIG. 2, first, the ends of the flat metal foil 1 and the corrugated metal foil 2 are overlapped and attached to the winding shaft 7, and are guided through the guide rolls 8, 8. Both foils 1 and 2 were fed in the longitudinal direction. The irradiation position of the laser 6 is adjusted to the position of the contact portion 5 of both foils. In this embodiment, the irradiation position of the laser 6 is adjusted to the position of the contact point (5) with respect to the wound cylinder of the foils 1 and 2 sent in the longitudinal direction. . Then, as the winding of the foils 1 and 2 progresses, the winding diameter increases. However, the winding shaft 7 is moved in the direction of the arrow X, that is, downward, with the increase of the winding diameter, and becomes the irradiation position of the laser 6. The contact (5) was fixed. This eliminates the need for movement in the direction in which the laser 6 is irradiated. Irradiation with the laser 6 may be performed on all the contact portions 5 of both foils, or the columnar catalyst carrier material 3 can be formed by performing several contact portions 5 at predetermined intervals without welding. there were.

[0011]

As described above, according to the present invention,
In the method of manufacturing a columnar catalyst support material by winding a metal foil, long-term continuous processing accompanying mass production can be performed, and even when a different type of catalyst support material is manufactured, it can be quickly responded.

[Brief description of the drawings]

FIG. 1 is a principle diagram of a method for producing a columnar catalyst carrier material according to an embodiment.

FIG. 2 is a view showing the principle of a method for producing a columnar catalyst carrier material according to one embodiment.

FIG. 3 is a schematic perspective view of a columnar catalyst carrier material.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 flat metal foil 2 corrugated metal foil 3 cylindrical catalyst carrier material 4, 9 side end 5 contact part (contact point) 6 laser 7 winding shaft 8 guide roll

Claims (1)

[Claims] 1. A method for manufacturing a columnar catalyst support material formed by overlapping and winding a flat metal foil and a corrugated metal foil, wherein the flat metal foil and the corrugated metal foil are overlapped with each other. A method for producing a columnar catalyst carrier material, characterized in that a portion where the side edges of both foils are in contact with each other is welded by laser, and the integrated foils are wound up in the longitudinal direction.