JPH01242152A - Production of metal catalyst carrier - Google Patents

Production of metal catalyst carrier

Info

Publication number
JPH01242152A
JPH01242152A JP63071092A JP7109288A JPH01242152A JP H01242152 A JPH01242152 A JP H01242152A JP 63071092 A JP63071092 A JP 63071092A JP 7109288 A JP7109288 A JP 7109288A JP H01242152 A JPH01242152 A JP H01242152A
Authority
JP
Japan
Prior art keywords
flat plate
plate
corrugated plate
corrugated
metal catalyst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63071092A
Other languages
Japanese (ja)
Inventor
Hideji Ebara
秀治 江原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Corp
Original Assignee
Calsonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Calsonic Corp filed Critical Calsonic Corp
Priority to JP63071092A priority Critical patent/JPH01242152A/en
Publication of JPH01242152A publication Critical patent/JPH01242152A/en
Pending legal-status Critical Current

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  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

PURPOSE:To prevent film-out phenomenon by forming core part excavated with many slits in welded metal corrugated plate and flat plate, thereafter by directly forming wash-coat layer and by impregnating metal catalyst on the layer. CONSTITUTION:When the metal corrugated plate 31 and flat plate 33 are overlapped and rolled in multilayer, and the surfaces thereof are irradiated with laser beam 37. As this result, the corrugated plate 31 and flat plate 33 are welded at the irradiated points and thereby the film-out phenomenon can be surely prevented. Since the corrugated plate 31 and flat plate 33 are excavated with many slits 41 by projecting with laser beam 37, the wash-coat liq. 44 is surely attached around the slits 41 due to the function of slit, by immersing the core part 35 made from the corrugated plate 31 and flat plate 33 with the slits 41, in the wash-coat liq. 44.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、排気ガスの浄化を行なうメタル触媒コンバー
タ等で使用される金属触媒担体の製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a metal catalyst carrier used in metal catalytic converters and the like for purifying exhaust gas.

〔従来の技術〕[Conventional technology]

一般に、排気ガスの浄化を行なうメタル触媒コンバータ
等では、例えば、特開昭57−71898号公報に開示
されるような金属触媒担体が使用されている。
Generally, in metal catalytic converters and the like that purify exhaust gas, a metal catalyst carrier as disclosed in, for example, Japanese Patent Application Laid-Open No. 71898/1983 is used.

第5図は、この種の金属触媒担体を示すもので、この金
属触媒担体は、第6図に示すように、アルミニウムが含
有あるいは蒸着された金属製の波板11と平板13とを
重ね、これ等を多重に巻回し、これを押し潰しコア部1
7を形成した後、波板11と平板13とにアルミナウィ
スカ層を形成し、このアルミナウィスカ層の表面にウォ
ッシュコート層を形成し、さらに、このウォッシュコー
ト層に金属触媒を含浸して形成されている。
FIG. 5 shows this type of metal catalyst carrier. As shown in FIG. 6, this metal catalyst carrier is made by stacking a corrugated metal plate 11 containing or vapor-deposited aluminum and a flat plate 13. These are wound multiple times and crushed to form core part 1.
After forming 7, an alumina whisker layer is formed on the corrugated plate 11 and the flat plate 13, a wash coat layer is formed on the surface of this alumina whisker layer, and further, this wash coat layer is impregnated with a metal catalyst. ing.

すなわち、第7図は、このような金属触媒担体の波板1
1および平板13の詳細を示すもので、アルミニウム°
を含むフェライト系ステンレスからなる基材18(波板
11および平板13)の表面に、いわゆる耐スポーリン
グ性を向上するため、アルミニウムの拡散によりアルミ
ナウィスカ層l9が形成されている。また、このアルミ
ナウィスカ層19の表面には、ウォッシュコート層21
が形成され、このウォッシュコート層21には、金属触
媒23が含浸されている。
That is, FIG. 7 shows a corrugated plate 1 of such a metal catalyst carrier.
1 and the details of the flat plate 13, made of aluminum °
In order to improve so-called spalling resistance, an alumina whisker layer 19 is formed on the surface of the base material 18 (corrugated plate 11 and flat plate 13) made of ferritic stainless steel containing aluminum by diffusion of aluminum. Further, a wash coat layer 21 is provided on the surface of this alumina whisker layer 19.
is formed, and this washcoat layer 21 is impregnated with a metal catalyst 23.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、このような従来の金属触媒担体では、金
属製の波板11と平板13とを重ね、これ等を多重に巻
回しコア部17を形成しているため、排気ガスの流通に
より、第8図に示すように、金属触媒担体の排気ガス流
出側が中央部から突出する、いわゆるフィルムアウト現
象が発生するという問題があった。
However, in such a conventional metal catalyst carrier, the corrugated metal plate 11 and the flat plate 13 are stacked and wound in multiple layers to form the core part 17. As shown in the figure, there was a problem in that the exhaust gas outflow side of the metal catalyst carrier protruded from the center, a so-called film-out phenomenon.

また、このような従来の金属触媒担体では、波板11お
よび平板13にウォッシュコート層21を確実に形成す
るために、ウオツシュコ−1・層21の形成前に予め、
波Fillおよび平板13にアルミナウィスカ層19を
形成する必要があるという問題があった。
In addition, in such a conventional metal catalyst carrier, in order to reliably form the washcoat layer 21 on the corrugated plate 11 and the flat plate 13, before forming the washcoat layer 21,
There was a problem in that it was necessary to form an alumina whisker layer 19 on the wave fill and the flat plate 13.

本発明者は、かかる問題を解決するため、鋭意研究した
結果、波板11および平板13に、微小なスリットを多
数形成することにより、アルミナウィスカ層19を形成
しなくても、波板11および平板13に充分な量のウォ
ッシュコート層21を形成することができることを見出
した。
In order to solve this problem, the present inventor conducted extensive research and found that by forming a large number of minute slits in the corrugated plate 11 and the flat plate 13, the corrugated plate 11 and the flat plate 13 can be formed without forming the alumina whisker layer 19. It has been found that a sufficient amount of washcoat layer 21 can be formed on flat plate 13.

本発明は、かかる知見に基づいてなされたもので、フィ
ルムアウト現象を防止することができるとともにウィス
カ層の形成を不要にすることのできる金属触媒担体の製
造方法を提供することを目的とする。
The present invention was made based on this knowledge, and an object of the present invention is to provide a method for manufacturing a metal catalyst carrier that can prevent the film-out phenomenon and eliminate the need for forming a whisker layer.

〔課題を解決するための手段〕[Means to solve the problem]

本発明に係わる金属触媒担体の製造方法は、金属製の波
板と平板とを重ね、これ等を多重に巻回するとともに、
巻回時に前記波板および平板にレーザビームまたは電子
ビームを照射し、波板と平板とをその当接部において溶
着する一方、波板および平板に多数のスリットを穿設し
、コア部を形成した後、前記波板と平板とにウィスカ層
を形成することなく、直接ウォッシュコート層を形成し
、このウォッシュコート層に金属触媒を含浸するもので
ある。
The method for manufacturing a metal catalyst carrier according to the present invention involves stacking a metal corrugated plate and a flat plate, and winding these in multiple layers.
During winding, the corrugated sheet and the flat sheet are irradiated with a laser beam or an electron beam to weld the corrugated sheet and the flat sheet at their abutting portions, and a large number of slits are bored in the corrugated sheet and the flat sheet to form a core part. After that, a wash coat layer is directly formed on the corrugated plate and the flat plate without forming a whisker layer, and this wash coat layer is impregnated with a metal catalyst.

〔作 用〕[For production]

本発明においては、金属製の波板と平板とを重ね、これ
等を多重に巻回するとともに、巻回時に波板および平板
にレーザビームまたは電子ビームが照射され、波板と平
板とがその当接部において溶着される。そして、この時
に、波板および平板に多数のスリットが穿設され、コア
部が形成され、この後、波板と平板とにウィスカ層が形
成されることなく、直接ウォッシュコート層が形成され
、このウォッシュコート層に金属触媒が含浸される。
In the present invention, a metal corrugated plate and a flat plate are stacked and wound in multiple layers, and the corrugated plate and the flat plate are irradiated with a laser beam or an electron beam during winding, so that the corrugated plate and the flat plate are Welded at the contact area. At this time, a large number of slits are made in the corrugated sheet and the flat sheet to form a core part, and after this, a wash coat layer is directly formed on the corrugated sheet and the flat sheet without forming a whisker layer. This washcoat layer is impregnated with a metal catalyst.

[実施例] 以下、本発明方法の詳細を図面を用いて説明する。[Example] Hereinafter, details of the method of the present invention will be explained using the drawings.

本発明の金属触媒担体の製造方法では、先ず、第1図に
示すように、例えば、耐熱鋼からなる金属製の波板31
と平板33とを重ね、これ等を多重に巻回し、コア部3
5が形成される。
In the method for manufacturing a metal catalyst carrier of the present invention, first, as shown in FIG.
and the flat plate 33 and wind them multiple times to form the core part 3.
5 is formed.

しかして、この実施例では、波板31と平板33との巻
回時に、波板31および平板33にレーザビーム37が
照射され、第2図に示すように、波板31と平板33と
がその当接部において溶着39される。
In this embodiment, when the corrugated sheet 31 and the flat plate 33 are wound, the corrugated sheet 31 and the flat plate 33 are irradiated with the laser beam 37, and as shown in FIG. Welding 39 is performed at the abutting portion.

そして、この時に、レーザビーム37が波板31と平板
33の移動する方向に相対移動され、波板31および平
板33に、例えば、階段状に多数のスリット41が穿設
される。
At this time, the laser beam 37 is relatively moved in the direction in which the corrugated plate 31 and the flat plate 33 move, and a large number of slits 41 are bored in the corrugated plate 31 and the flat plate 33, for example, in a stepwise manner.

この後、巻回の終了したコア部35が、第3図に示すよ
うに、ウォッシュコート液44の収容される容器45内
に浸漬され、波板31と平板33七にウォッシュコート
層が形成され、このウォッシュコート層に金属触媒が含
浸される。
Thereafter, as shown in FIG. 3, the core part 35 that has been wound is immersed in a container 45 containing washcoat liquid 44, and a washcoat layer is formed on the corrugated plate 31 and the flat plate 33. , this washcoat layer is impregnated with a metal catalyst.

第4図は、このようにして製造された金属触媒担体の波
板31および平板33の詳細を示すもので、波板31お
よび平板33の表面には、従来のようにアルミナウィス
カ層を形成することなく、直接ウォッシュコート層43
が形成され、このつオンシュコート層43には、金属触
媒46が含浸されている。ここで、ウォッシュコート層
43は、例えば、γ−A I z O:+からなる。ま
た、金属触媒46には、Pt、Rh等が用いられる。
FIG. 4 shows the details of the corrugated plate 31 and the flat plate 33 of the metal catalyst carrier manufactured in this way.Alumina whisker layers are formed on the surfaces of the corrugated plate 31 and the flat plate 33 as in the conventional method. Wash coat layer 43 directly without
is formed, and this onche coat layer 43 is impregnated with a metal catalyst 46. Here, the wash coat layer 43 is made of, for example, γ-A I z O:+. Moreover, Pt, Rh, etc. are used for the metal catalyst 46.

しかして、本発明の金属触媒担体の製造方法では、金属
製の波板31と平板33とを重ね、これ等を多重に巻回
するとともに、巻回時に波板31および平板33にレー
ザビーム37を照射するようにしたので、波板31と平
板33とがその当接部において溶着され、これによりフ
ィルムアウト現象を確実に防止することが可能となる。
Therefore, in the method for manufacturing a metal catalyst carrier of the present invention, the metal corrugated plate 31 and the flat plate 33 are stacked and wound in multiple layers, and the laser beam 37 is applied to the corrugated plate 31 and the flat plate 33 during winding. Since the corrugated plate 31 and the flat plate 33 are irradiated with each other, the corrugated plate 31 and the flat plate 33 are welded at their abutting portions, thereby making it possible to reliably prevent the film-out phenomenon.

また、レーザビーム37の照射により、波板31および
平板33に多数のスリット41を穿設するようにしたの
で、波板31と平板33とにスリット41の形成された
コア部35をウオッシュコ−)/Fi、44に浸漬する
と、スリット41の作用により、ウォッシュコート液4
4がスリット41の廻りに確実に付着し、これを中心に
してウォッシュコート液44が広がり、波板31および
平板33に充分な量のウォッシュコート層43を形成す
ることが可能となる。
Further, since a large number of slits 41 are formed in the corrugated plate 31 and the flat plate 33 by irradiation with the laser beam 37, the core portion 35 in which the slits 41 are formed in the corrugated plate 31 and the flat plate 33 is )/Fi, 44, the action of the slit 41 causes the washcoat liquid 4 to
4 reliably adheres around the slits 41, and the washcoat liquid 44 spreads around the slits 41, making it possible to form a sufficient amount of the washcoat layer 43 on the corrugated plate 31 and the flat plate 33.

さらに、本発明方法では、波板31および平板33にア
ルミナウィスカ層を形成する必要がなくなるため、高価
なアルミニウム含有板材、あるいはアルミニウム蒸着板
材等を使用する必要がなくなり、安価な金属触媒担体を
提供することが可能になる。
Furthermore, in the method of the present invention, it is not necessary to form an alumina whisker layer on the corrugated plate 31 and the flat plate 33, so there is no need to use expensive aluminum-containing plate materials or aluminum vapor-deposited plate materials, and an inexpensive metal catalyst carrier can be provided. It becomes possible to do so.

なお、以上述べた実施例では、波板31および平板33
にレーザビーム37によりスリット41を形成した例に
ついて説明したが、本発明は、かかる実施例に限定され
るものではなく、例えば、電子ビームによりスリットを
形成するようにしても良いことは勿論である。
In addition, in the embodiment described above, the corrugated plate 31 and the flat plate 33
Although the example in which the slit 41 was formed by the laser beam 37 was described in , the present invention is not limited to this example, and it goes without saying that the slit may be formed by, for example, an electron beam. .

〔発明の効果〕〔Effect of the invention〕

以上述べたように、本発明によれば、金属製の波板と平
板とを重ね、これ等を多重に巻回するとともに、巻回時
に波板および平板にレーザビームまたは電子ビームを照
射し、波板と平板とをその当接部において溶着する一方
、波板および平板に多数のスリットを穿設し、コア部を
形成した後、波板と平板とにウィスカ層を形成すること
なく、直接ウォッシュコート層を形成し、このウォッシ
ュコート層に金属触媒を含浸するようにしたので、フィ
ルムアウト現象を確実に防止することができるとともに
ウィスカ層の形成を不要にすることができるという利点
がある。
As described above, according to the present invention, a metal corrugated plate and a flat plate are stacked, and these are wound in multiple layers, and at the time of winding, the corrugated plate and the flat plate are irradiated with a laser beam or an electron beam, While welding the corrugated plate and the flat plate at their abutting parts, welded a large number of slits in the corrugated plate and the flat plate to form a core part, and then welded the corrugated plate and the flat plate directly without forming a whisker layer. Since a washcoat layer is formed and the washcoat layer is impregnated with a metal catalyst, there are advantages in that the film-out phenomenon can be reliably prevented and the formation of a whisker layer can be made unnecessary.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は波板と平板とを巻回している状態を示す斜視図
である。 第2図はスリットの形成されたコア部を示す側面図であ
る。 第3図はコア部をウォッシュコート液に浸漬する状態を
示す説明図である。 第4図は本発明方法で製造された金属触媒担体の詳細を
示す縦断面図である。 第5図は従来の金属触媒担体の一例を示す斜視図である
。 第6図は波板と平板とを巻回している状態を示す斜視図
である。 第7図は第5図の波板と平板との詳細を示す断面図であ
る。 第8図はフィルムアウト現象を説明するための説明図で
ある。 〔主要な部分の符号の説明〕 31・・・波板 33・・・平板 35・・・コア部 37・・・レーザビーム 41・・・スリット 43・・・ウォッシュコート層 46・・・金属触媒。 第1図 \
FIG. 1 is a perspective view showing a state in which a corrugated plate and a flat plate are wound. FIG. 2 is a side view showing a core portion in which slits are formed. FIG. 3 is an explanatory diagram showing a state in which the core portion is immersed in a washcoat liquid. FIG. 4 is a longitudinal sectional view showing details of a metal catalyst carrier manufactured by the method of the present invention. FIG. 5 is a perspective view showing an example of a conventional metal catalyst carrier. FIG. 6 is a perspective view showing a state in which a corrugated plate and a flat plate are wound. FIG. 7 is a sectional view showing details of the corrugated plate and flat plate of FIG. 5. FIG. 8 is an explanatory diagram for explaining the film-out phenomenon. [Explanation of symbols of main parts] 31...Corrugated plate 33...Flat plate 35...Core portion 37...Laser beam 41...Slit 43...Wash coat layer 46...Metal catalyst . Figure 1\

Claims (1)

【特許請求の範囲】[Claims] (1)金属製の波板と平板とを重ね、これ等を多重に巻
回するとともに、巻回時に前記波板および平板にレーザ
ビームまたは電子ビームを照射し、波板と平板とをその
当接部において溶着する一方、波板および平板に多数の
スリットを穿設し、コア部を形成した後、前記波板と平
板とにウィスカ層を形成することなく、直接ウォッシュ
コート層を形成し、このウォッシュコート層に金属触媒
を含浸することを特徴とする金属触媒担体の製造方法。
(1) Layer a metal corrugated plate and a flat plate, wind them multiple times, and irradiate the corrugated plate and flat plate with a laser beam or an electron beam during winding, so that the corrugated plate and flat plate are While welding at the joint, a large number of slits are bored in the corrugated plate and the flat plate to form a core part, and then a wash coat layer is directly formed on the corrugated plate and the flat plate without forming a whisker layer, A method for producing a metal catalyst carrier, which comprises impregnating this washcoat layer with a metal catalyst.
JP63071092A 1988-03-25 1988-03-25 Production of metal catalyst carrier Pending JPH01242152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63071092A JPH01242152A (en) 1988-03-25 1988-03-25 Production of metal catalyst carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63071092A JPH01242152A (en) 1988-03-25 1988-03-25 Production of metal catalyst carrier

Publications (1)

Publication Number Publication Date
JPH01242152A true JPH01242152A (en) 1989-09-27

Family

ID=13450549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63071092A Pending JPH01242152A (en) 1988-03-25 1988-03-25 Production of metal catalyst carrier

Country Status (1)

Country Link
JP (1) JPH01242152A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447697A (en) * 1992-04-24 1995-09-05 Nippondenso Co., Ltd. Metal catalyst carrier
US6080371A (en) * 1997-04-09 2000-06-27 Calsonic Corporation Catalytic converter and honeycomb metallic catalyst bed unit therefor
US6761980B2 (en) * 2000-11-15 2004-07-13 Nissan Motor Co., Ltd. Metallic catalyst carrier
US7030059B2 (en) * 2002-12-11 2006-04-18 Calsonic Kansei Corporation Metal catalyst carrier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447697A (en) * 1992-04-24 1995-09-05 Nippondenso Co., Ltd. Metal catalyst carrier
US6080371A (en) * 1997-04-09 2000-06-27 Calsonic Corporation Catalytic converter and honeycomb metallic catalyst bed unit therefor
US6761980B2 (en) * 2000-11-15 2004-07-13 Nissan Motor Co., Ltd. Metallic catalyst carrier
US7030059B2 (en) * 2002-12-11 2006-04-18 Calsonic Kansei Corporation Metal catalyst carrier

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