JPH0857673A - Welding method for metallic catalyst carrier - Google Patents
Welding method for metallic catalyst carrierInfo
- Publication number
- JPH0857673A JPH0857673A JP6199513A JP19951394A JPH0857673A JP H0857673 A JPH0857673 A JP H0857673A JP 6199513 A JP6199513 A JP 6199513A JP 19951394 A JP19951394 A JP 19951394A JP H0857673 A JPH0857673 A JP H0857673A
- Authority
- JP
- Japan
- Prior art keywords
- flat plate
- corrugated
- welding
- plate
- catalyst carrier
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000003466 welding Methods 0.000 title claims abstract description 43
- 239000003863 metallic catalyst Substances 0.000 title abstract 4
- 238000010894 electron beam technology Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 51
- 239000002184 metal Substances 0.000 claims description 51
- 239000003054 catalyst Substances 0.000 claims description 40
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 238000005219 brazing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車等の触媒コンバ
ータに用いられるメタル触媒担体に係わり、特に、メタ
ル触媒担体を構成する金属製の波板と平板とを相互に溶
接するためのメタル触媒担体の溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal catalyst carrier used in a catalytic converter for automobiles, etc., and more particularly to a metal catalyst carrier for welding metal corrugated plates and flat plates constituting the metal catalyst carrier to each other. The present invention relates to a method for welding a carrier.
【０００２】[0002]
【従来の技術】一般に、自動車の排気系には、排気ガス
を浄化するため、例えば、金属製の波板と平板とを積層
してなるメタル触媒担体を収容した触媒コンバータが配
置されている。2. Description of the Related Art In general, an automobile exhaust system is provided with a catalytic converter for purifying exhaust gas, which accommodates a metal catalyst carrier formed by laminating a corrugated plate and a flat plate made of metal, for example.
【０００３】図５は、メタル触媒担体の一例を示すもの
で、このメタル触媒担体は、図６に示すように、金属製
の波板１１と平板１３とを交互に重ね、これ等を芯材を
中心にして、円形形状に多重に巻回して仮コア部１５を
形成した後、この仮コア部１５を押し潰すことにより形
成される。FIG. 5 shows an example of a metal catalyst carrier. In this metal catalyst carrier, as shown in FIG. 6, metal corrugated plates 11 and flat plates 13 are alternately stacked, and these are used as core materials. Is formed in a circular shape in a multiple manner to form a temporary core portion 15, and then the temporary core portion 15 is crushed.
【０００４】このようなメタル触媒担体１７は、例え
ば、図７に示すように、排気ガスの流入口１９および流
出口２１の形成される筒状容器２３内に収容されて用い
られる。Such a metal catalyst carrier 17 is used by being housed in a cylindrical container 23 in which an exhaust gas inlet 19 and an outlet 21 are formed, as shown in FIG. 7, for example.
【０００５】しかしながら、このようなメタル触媒担体
１７では、波板１１と平板１３とを巻回したままの状態
にしておくと、メタル触媒担体１７内への排気ガスＧの
流通により、メタル触媒担体１７の中心部に位置する波
板１１および平板１３がメタル触媒担体１７の軸方向に
突出する、いわゆる、フィルムアウト現象が生じるとい
う問題がある。However, in such a metal catalyst carrier 17, if the corrugated plate 11 and the flat plate 13 are left in the wound state, the exhaust gas G flows into the metal catalyst carrier 17 to cause the metal catalyst carrier 17 to flow. There is a problem that a so-called film-out phenomenon occurs in which the corrugated plate 11 and the flat plate 13 located at the center of 17 project in the axial direction of the metal catalyst carrier 17.
【０００６】すなわち、このフィルムアウト現象は、メ
タル触媒担体１７が高温で膨張している状態で、アイド
リング時に低温ガスが流入すると、先ず、中心部が収縮
し、積層された波板１１と平板１３とを相互に引き剥が
す力Ｆ1 が働き、波板１１と平板１３とが相互に引き剥
がされると、中心部分が、ガス圧，振動等の押し出し力
Ｆ2 により押し出されることにより発生する。That is, in the film-out phenomenon, when the low temperature gas flows in during idling with the metal catalyst carrier 17 expanding at a high temperature, first, the central portion contracts, and the corrugated plate 11 and the flat plate 13 that are stacked are stacked. When the corrugated plate 11 and the flat plate 13 are peeled off from each other by the force F 1 for peeling off and from each other, the central portion is pushed out by the pushing force F 2 such as gas pressure and vibration.
【０００７】そこで、従来、このようなメタル触媒担体
では、波板１１と平板１３とを相互に接合することが行
われている。このような接合方法としては、例えば、特
開平４−２９７５０号公報に開示されるように、波板１
１と平板１３とをろう付けにより接合する方法、例え
ば、特開平１−１７６４５４号公報に開示されるよう
に、波板１１と平板１３とを拡散接合により接合する方
法、例えば、特公平４−３５２７１号公報に開示される
ように、担体の端面をレーザービーム溶接する方法、例
えば、特開平３−１１４５４６号公報に開示されるよう
に、箔材中のアルミニウムを高温酸化させ、アルミナを
生成する方法、例えば、特開平４−２７４４３号公報に
開示されるように、ジュール熱を利用して波板１１と平
板１３とを電気溶接する方法、例えば、特公昭６０−２
７８０７号公報に開示されるように、担体に串を通して
波板１１と平板１３とを機械的に連結する方法等が知ら
れている。Therefore, conventionally, in such a metal catalyst carrier, the corrugated plate 11 and the flat plate 13 are joined to each other. As such a joining method, for example, as disclosed in JP-A-4-29750, the corrugated sheet 1
1 and the flat plate 13 are joined by brazing, for example, a method of joining the corrugated plate 11 and the flat plate 13 by diffusion joining as disclosed in JP-A-1-176454, for example, Japanese Patent Publication No. As disclosed in JP-A-35271, a method of laser-beam welding the end face of a carrier, for example, as disclosed in JP-A-3-114546, aluminum in a foil material is oxidized at high temperature to form alumina. A method, for example, a method of electrically welding the corrugated plate 11 and the flat plate 13 using Joule heat, as disclosed in Japanese Patent Laid-Open No. 4-27443, for example, Japanese Patent Publication No. 60-2.
As disclosed in Japanese Patent No. 7807, there is known a method of mechanically connecting the corrugated plate 11 and the flat plate 13 by passing a skewer through a carrier.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、例え
ば、特開平４−２９７５０号公報に開示される方法で
は、波板１１と平板１３とをろう付けするために、高価
な真空電気炉が必要になり、また、高温雰囲気を維持す
るために多大なエネルギーが必要になり、さらに、高価
なろう材が必要になるという問題があった。However, for example, in the method disclosed in Japanese Patent Laid-Open No. 4-29750, an expensive vacuum electric furnace is required to braze the corrugated plate 11 and the flat plate 13. Also, there is a problem that a large amount of energy is required to maintain the high temperature atmosphere, and an expensive brazing material is required.
【０００９】また、例えば、特開平１−１７６４５４号
公報に開示される拡散接合方法では、強固な接合強度を
得ることができないという問題があった。さらに、例え
ば、特公平４−３５２７１号公報に開示される担体の端
面をレーザービーム溶接する方法では、端面のみをレー
ザービーム溶接しているため、確実な接合強度を得るこ
とができないという問題があった。Further, for example, the diffusion bonding method disclosed in Japanese Patent Laid-Open No. 1-176454 has a problem that a strong bonding strength cannot be obtained. Further, for example, in the method of laser beam welding the end faces of the carrier disclosed in Japanese Patent Publication No. 4-35271, only the end faces are laser beam welded, so that there is a problem that a reliable joining strength cannot be obtained. It was
【００１０】また、例えば、特開平３−１１４５４６号
公報に開示されるアルミナを生成する方法では、強固な
接合強度を得ることができないという問題があった。さ
らに、例えば、特開平４−２７４４３号公報に開示され
るように、ジュール熱を利用して波板１１と平板１３と
を電気溶接する方法では、波板１１と平板１３とを丁寧
に溶接する必要があるため、多大な溶接時間が必要にな
るという問題があった。Further, for example, the method of producing alumina disclosed in Japanese Patent Laid-Open No. 3-114546 has a problem that a strong bonding strength cannot be obtained. Furthermore, for example, in the method of electrically welding the corrugated sheet 11 and the flat plate 13 using Joule heat as disclosed in JP-A-4-27443, the corrugated sheet 11 and the flat plate 13 are carefully welded. Therefore, there is a problem that a great amount of welding time is required.
【００１１】また、例えば、特公昭６０−２７８０７号
公報に開示されるように、担体に串を通して波板１１と
平板１３とを機械的に連結する方法では、串と接触する
箔材が損傷したり、串により通気抵抗が増大するという
問題があった。Further, for example, as disclosed in Japanese Patent Publication No. Sho 60-27807, in the method of mechanically connecting the corrugated plate 11 and the flat plate 13 by passing the skewer through the carrier, the foil material contacting the skewer is damaged. There was a problem that the ventilation resistance increased due to the skewers.
【００１２】本発明は、上記のような問題を解決すべく
なされたもので、波板と平板とを容易かつ強固に溶接す
ることができるメタル触媒担体の溶接方法を提供するこ
とを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for welding a metal catalyst carrier, which can easily and firmly weld a corrugated plate and a flat plate. .
【００１３】[0013]
【課題を解決するための手段】請求項１のメタル触媒担
体の溶接方法は、金属製の波板と平板とを交互に積層し
てなる担体素子の前記波板と平板とを溶接するメタル触
媒担体の溶接方法において、前記担体素子の外側からレ
ーザービームを照射し、前記波板および平板に直交する
方向に前記レーザービームを貫通させ、前記波板と平板
とを相互に溶接するものである。A method of welding a metal catalyst carrier according to claim 1 is a metal catalyst for welding a corrugated plate and a flat plate of a carrier element in which corrugated plates and flat plates made of metal are alternately laminated. In the method of welding a carrier, a laser beam is irradiated from the outside of the carrier element, the laser beam is penetrated in a direction orthogonal to the corrugated plate and the flat plate, and the corrugated plate and the flat plate are welded to each other.
【００１４】請求項２のメタル触媒担体の溶接方法は、
金属製の波板と平板とを交互に積層してなる担体素子の
前記波板と平板とを溶接するメタル触媒担体の溶接方法
において、前記担体素子の前記波板および平板に直交す
る方向に貫通孔を形成した後、前記貫通孔にレーザービ
ームまたは電子ビームを照射し、前記波板と平板とを相
互に溶接するものである。The method for welding a metal catalyst carrier according to claim 2 is
In a method of welding a metal catalyst carrier, wherein a corrugated plate and a flat plate made of metal are alternately laminated, the corrugated plate and the flat plate are welded to each other. After forming the hole, the through hole is irradiated with a laser beam or an electron beam to weld the corrugated plate and the flat plate to each other.
【００１５】請求項３のメタル触媒担体の溶接方法は、
請求項１または請求項２において、前記担体素子は、前
記波板と平板とを重ね、これ等を多重に巻回してなるも
のである。The method of welding a metal catalyst carrier according to claim 3 is
In Claim 1 or Claim 2, the carrier element is formed by stacking the corrugated plate and the flat plate and winding them in multiple layers.
【００１６】[0016]
【作用】請求項１のメタル触媒担体の溶接方法では、担
体素子の外側からレーザービームを照射し、波板および
平板に直交する方向にレーザービームを貫通させると、
レーザービームの熱エネルギーにより貫通部の縁部の波
板と平板とが溶融し相互に溶接される。In the method for welding a metal catalyst carrier according to claim 1, when the laser beam is irradiated from the outside of the carrier element and the laser beam penetrates in a direction orthogonal to the corrugated plate and the flat plate,
Due to the thermal energy of the laser beam, the corrugated plate and the flat plate at the edge of the penetration portion are melted and welded to each other.
【００１７】請求項２のメタル触媒担体の溶接方法で
は、担体素子の波板および平板に直交する方向に形成さ
れる貫通孔に、レーザービームまたは電子ビームを照射
すると、貫通孔の縁部の波板と平板とが溶融し相互に溶
接される。In the method of welding a metal catalyst carrier according to a second aspect of the present invention, when the laser beam or the electron beam is irradiated to the through hole formed in the direction orthogonal to the corrugated plate and the flat plate of the carrier element, the wave at the edge of the through hole is generated. The plate and the flat plate are melted and welded to each other.
【００１８】請求項３のメタル触媒担体の溶接方法で
は、波板と平板とを重ねこれ等を多重に巻回した担体素
子の波板と平板とが確実に溶接されるため、波板と平板
との接合が破壊され、波板と平板とが担体素子の軸方向
に突出することがなくなる。In the method for welding a metal catalyst carrier of claim 3, since the corrugated plate and the flat plate of the carrier element in which the corrugated plate and the flat plate are superposed and wound in a multiple manner are reliably welded, the corrugated plate and the flat plate are welded. The joint between the corrugated plate and the flat plate is not broken, and the corrugated plate and the flat plate do not project in the axial direction of the carrier element.
【００１９】[0019]
【実施例】以下、本発明の詳細を図面を用いて説明す
る。図１は、本発明のメタル触媒担体の溶接方法の第１
の実施例を示しており、図において、符号３１は、金属
製の波板３３と平板３５とを交互に積層してなる担体素
子を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 shows a first method of welding a metal catalyst carrier according to the present invention.
In the figure, reference numeral 31 denotes a carrier element in which corrugated plates 33 and flat plates 35 made of metal are alternately laminated.
【００２０】この担体素子３１は、波板３３と平板３５
とを重ね、これ等を多重に巻回した後、レーストラック
状に押し潰して形成されている。この実施例では、担体
素子３１の軸長方向寸法は１１８mm、長径寸法は１５４
mm、短径寸法は８８mmである。This carrier element 31 comprises a corrugated plate 33 and a flat plate 35.
Are stacked and wound in multiple layers, and then crushed into a race track shape. In this embodiment, the carrier element 31 has an axial length dimension of 118 mm and a major axis dimension of 154.
mm, the minor axis dimension is 88 mm.
【００２１】そして、この実施例では、担体素子３１の
外周には、略全面にわたって、レーザービーム３６が照
射されるレーザースポットＰが、４×４×２の３２個所
設定されている。In this embodiment, 32 laser spots P of 4 × 4 × 2 are set on the outer periphery of the carrier element 31 so as to be irradiated with the laser beam 36 over substantially the entire surface.
【００２２】そして、この担体素子３１に対する波板３
３と平板３５との溶接は、担体素子３１の外側から、各
レーザースポットＰに、レーザービーム３６を照射し、
波板３３および平板３５に直交する方向にレーザービー
ム３６を貫通させることにより行われる。Then, the corrugated plate 3 for this carrier element 31 is used.
3 and the flat plate 35 are welded by irradiating each laser spot P with a laser beam 36 from the outside of the carrier element 31.
It is performed by penetrating a laser beam 36 in a direction orthogonal to the corrugated plate 33 and the flat plate 35.
【００２３】従って、担体素子３１の平坦部３１ａのレ
ーザースポットＰにおいては、平坦部３１ａに対して垂
直な方向からレーザービーム３６が照射され、円弧部３
１ｂにおいては、円弧部３１ｂの中心に向かう方向にレ
ーザービーム３６が照射される。Therefore, at the laser spot P on the flat portion 31a of the carrier element 31, the laser beam 36 is irradiated from the direction perpendicular to the flat portion 31a, and the arc portion 3 is formed.
In 1b, the laser beam 36 is irradiated in the direction toward the center of the arc portion 31b.
【００２４】なお、レーザービーム３６の照射は、各レ
ーザースポットＰ毎に行っても良く、また、複数のレー
ザースポットＰに対して同時に行っても良い。そして、
担体素子３１のレーザースポットＰにレーザービーム３
６を照射し、波板３３および平板３５に直交する方向に
レーザービーム３６を貫通させることにより、図２に示
すように、レーザービーム３６の熱エネルギーにより貫
通部３７が形成され、この貫通部３７の縁部の波板３３
と平板３５とが溶融し、溶融部３９が形成され相互に溶
接される。The irradiation of the laser beam 36 may be carried out for each laser spot P, or may be carried out for a plurality of laser spots P at the same time. And
The laser beam 3 is applied to the laser spot P of the carrier element 31.
6, the laser beam 36 is penetrated in the direction orthogonal to the corrugated plate 33 and the flat plate 35 to form a penetrating portion 37 by the thermal energy of the laser beam 36, as shown in FIG. Edge corrugated sheet 33
And the flat plate 35 are melted to form a melted portion 39 and are welded to each other.
【００２５】しかして、この実施例のメタル触媒担体の
溶接方法では、担体素子３１の外側からレーザービーム
３６を照射し、波板３３および平板３５に直交する方向
にレーザービーム３６を貫通させると、レーザービーム
３６の熱エネルギーにより貫通部３７の縁部の波板３３
と平板３５とが溶融し相互に溶接されるため、波板３３
と平板３５とを容易かつ強固に溶接することができる。However, in the method of welding the metal catalyst carrier of this embodiment, when the laser beam 36 is irradiated from the outside of the carrier element 31 and the laser beam 36 penetrates in the direction orthogonal to the corrugated plate 33 and the flat plate 35, Due to the thermal energy of the laser beam 36, the corrugated plate 33 at the edge of the penetrating portion 37
And the flat plate 35 are melted and welded to each other.
The flat plate 35 and the flat plate 35 can be welded easily and firmly.
【００２６】すなわち、レーザービーム３６を施された
波板３３と平板３５との接触部分では、高靱性を有する
金属接合がなされ、メタル触媒担体として使用中に要求
されるガス流れに沿った力と、この力に直角な方向の箔
を引き剥がす方向の力に対して充分な強度を得ることが
できるため、フィルムアウト現象を確実に防止すること
ができる。That is, a metal joint having high toughness is formed at a contact portion between the corrugated plate 33 to which the laser beam 36 is applied and the flat plate 35, and a force along the gas flow required during use as a metal catalyst carrier is obtained. Since sufficient strength can be obtained against the force in the direction of peeling the foil in the direction perpendicular to this force, the film-out phenomenon can be reliably prevented.
【００２７】例えば、従来の酸化接合方法では、アルミ
ニウム酸化物に靱性がないため、箔を引き剥がす直角方
向の力に弱く、担体素子の軸長方向のズレ力である押し
出し力が大きいにもかかわらず、フィルムアウト現象が
生じていたが、本発明では、これを解消することができ
る。For example, in the conventional oxidation bonding method, since aluminum oxide has no toughness, it is weak against the force in the perpendicular direction for peeling the foil, and the pushing force which is the displacement force in the axial direction of the carrier element is large. However, the film-out phenomenon occurred, but in the present invention, this can be solved.
【００２８】そして、上述したメタル触媒担体の溶接方
法では、ろう付け，拡散接合，酸化物拡散等のための熱
処理が不要になり、また、製造工程が簡略化されるた
め、製造コストを低減することができる。In the above-mentioned method for welding the metal catalyst carrier, the heat treatment for brazing, diffusion bonding, oxide diffusion, etc. is not necessary, and the manufacturing process is simplified, so that the manufacturing cost is reduced. be able to.
【００２９】さらに、従来は、熱処理により、例えば、
酸化物拡散接合では、鋼中のアルミニウムが消費され、
また、ろう付け，拡散接合では、金属粒成長や金属粒界
への炭化物析出等により材料の劣化が生じていたが、本
発明方法では、熱処理が不要になるため、材料の劣化を
防止することができる。Further, conventionally, by heat treatment, for example,
Oxide diffusion bonding consumes aluminum in steel,
In brazing and diffusion bonding, the material was deteriorated due to metal grain growth and carbide precipitation on the metal grain boundaries. However, in the method of the present invention, the heat treatment is not required, and therefore the deterioration of the material should be prevented. You can
【００３０】図３は、本発明のメタル触媒担体の溶接方
法の第２の実施例を示しており、図において、符号３９
は、波板３３と平板３５とを重ね、これ等を多重に巻回
した円柱状の担体素子を示している。FIG. 3 shows a second embodiment of the method for welding a metal catalyst carrier according to the present invention.
Shows a columnar carrier element in which a corrugated plate 33 and a flat plate 35 are stacked and wound in multiple layers.
【００３１】この実施例では、担体素子３９の軸長方向
寸法は１１８mm、外径寸法は９８mmである。そして、こ
の実施例では、担体素子３９の外周には、略全面にわた
って、貫通孔４１が、３×４の１２個所形成されてい
る。In this embodiment, the carrier element 39 has an axial length dimension of 118 mm and an outer diameter dimension of 98 mm. In this embodiment, 3 × 4 12 through holes 41 are formed on the outer periphery of the carrier element 39 over substantially the entire surface.
【００３２】この貫通孔４１は、波板３３および平板３
５に直交する方向、すなわち、担体素子３９の中心に向
けて形成されている。貫通孔４１は、例えば、放電加
工，機械加工等により形成される。This through hole 41 is provided with a corrugated plate 33 and a flat plate 3.
5 is formed in a direction orthogonal to 5, that is, toward the center of the carrier element 39. The through hole 41 is formed by, for example, electric discharge machining, machining, or the like.
【００３３】そして、この担体素子３９に対する波板３
３と平板３５との溶接は、担体素子３９の外側から、各
貫通孔４１に向けて電子ビーム４３を照射することによ
り行われる。Then, the corrugated plate 3 for this carrier element 39 is used.
3 and the flat plate 35 are welded by irradiating the through holes 41 with the electron beam 43 from the outside of the carrier element 39.
【００３４】このように、貫通孔４１に向けて電子ビー
ム４３を照射することにより、図４に示すように、電子
ビーム４３の熱エネルギーにより貫通孔４１の縁部の波
板３３と平板３５とが溶融し、溶融部４５が形成され相
互に溶接される。By irradiating the electron beam 43 toward the through hole 41 in this manner, as shown in FIG. 4, the corrugated plate 33 and the flat plate 35 at the edge of the through hole 41 are generated by the thermal energy of the electron beam 43. Are melted to form a fusion zone 45 and are welded to each other.
【００３５】この実施例では、この後、貫通孔４１の入
口がアーク溶接あるいはトーチ溶接により塞がれる。こ
の実施例では、担体素子３９の波板３３および平板３５
に直交する方向に形成される貫通孔４１に、電子ビーム
４３を照射すると、貫通孔４１の縁部の波板３３と平板
３５とが溶融し相互に溶接されるため、波板３３と平板
３５とを容易かつ強固に溶接することができる。In this embodiment, thereafter, the entrance of the through hole 41 is closed by arc welding or torch welding. In this embodiment, the corrugated plate 33 and the flat plate 35 of the carrier element 39 are used.
When the electron beam 43 is applied to the through-hole 41 formed in the direction orthogonal to, the corrugated plate 33 and the flat plate 35 at the edge of the through-hole 41 are melted and welded to each other. And can be welded easily and firmly.
【００３６】次に示す表１は、本発明のメタル触媒担体
の溶接方法により接合された担体素子と、従来の担体素
子のフィルムアウト性を比較して示しており、本発明の
メタル触媒担体の溶接方法により接合された担体素子で
は、フィルムアウトが殆ど発生していないのがわかる。Table 1 below shows a comparison of the film-out properties of a carrier element joined by the method for welding a metal catalyst carrier of the present invention and a conventional carrier element. It can be seen that film out hardly occurs in the carrier element joined by the welding method.
【００３７】[0037]
【表１】 [Table 1]
【００３８】なお、担体素子を形成する波板３３および
平板３５には、２０％Ｃｒ−５％Ａｌフェライトステン
レスからなる肉厚５０μｍの箔材が使用された。また、
担体素子のセル密度は、６２０×１０００個／ｍ2 であ
る。For the corrugated plate 33 and the flat plate 35 forming the carrier element, a foil material made of 20% Cr-5% Al ferrite stainless steel and having a thickness of 50 μm was used. Also,
The cell density of the carrier element is 620 × 1000 cells / m 2 .
【００３９】さらに、ヒートサイクルテストは、４００
０ccのＶ型８気筒エンジンを用い、触媒コンバータの出
口温度を５分間で９００℃まで昇温し、次に、大気を吸
い込みながら５分間で２００℃まで冷却するサイクルを
５００サイクル行うことによりなされた。Further, the heat cycle test is 400
This was done by using a 0cc V-type 8-cylinder engine, raising the outlet temperature of the catalytic converter to 900 ° C. in 5 minutes, and then performing 500 cycles of cooling to 200 ° C. in 5 minutes while drawing in the air. .
【００４０】また、表１において、端面レーザー溶接と
は、担体素子の端面にレーザービームを照射し、端面の
波板３３と平板３５とを簡単に溶接したもので、波板３
３と平板３５とを軽く接合する効果はあるが、波板３３
と平板３５との実質的な接合強度には、大きな影響を有
していない。In Table 1, the end face laser welding means that the end face of the carrier element is irradiated with a laser beam and the corrugated plate 33 and the flat plate 35 on the end face are simply welded.
3 has an effect of lightly joining the flat plate 35, but the corrugated plate 33
It does not have a great influence on the substantial bonding strength between the flat plate 35 and the flat plate 35.
【００４１】さらに、比較例２および３の担体素子は、
１１００℃の空気雰囲気中において２時間熱処理し、波
板３３と平板３５とを酸化物接合したものである。な
お、以上述べた実施例では、波板３３と平板３５とを巻
回してなる担体素子３１，３９に本発明を適用した例に
ついて述べたが、本発明は、かかる実施例に限定される
ものではなく、波板３３と平板３５とを単に積層してな
る担体素子等にも同様に適用できる。Furthermore, the carrier elements of Comparative Examples 2 and 3 are
The corrugated plate 33 and the flat plate 35 are oxide-bonded by heat treatment for 2 hours in an air atmosphere at 1100 ° C. It should be noted that, in the above-described embodiments, an example in which the present invention is applied to the carrier elements 31 and 39 formed by winding the corrugated plate 33 and the flat plate 35 is described, but the present invention is not limited to such embodiments. Instead, the same can be applied to a carrier element or the like in which the corrugated plate 33 and the flat plate 35 are simply laminated.
【００４２】また、以上述べた第１の実施例では、レー
ストラック状の担体素子３１に本発明を適用した例につ
いて述べたが、本発明は、かかる実施例に限定されるも
のではなく、円柱状の担体素子等にも同様に適用でき
る。Further, in the above-mentioned first embodiment, an example in which the present invention is applied to the racetrack-shaped carrier element 31 has been described, but the present invention is not limited to such an embodiment, and is a circle. The same can be applied to columnar carrier elements and the like.
【００４３】さらに、以上述べた第２の実施例では、貫
通孔４１に電子ビーム４３を照射した例について述べた
が、本発明は、かかる実施例に限定されるものではな
く、レーザービームを照射しても良い。Furthermore, in the above-mentioned second embodiment, an example in which the through-hole 41 is irradiated with the electron beam 43 is described, but the present invention is not limited to this embodiment, and a laser beam is irradiated. You may.
【００４４】また、上述したレーザースポットＰまたは
貫通孔４１の個数は、レーザービーム３６または貫通孔
４１の径を大きくすることにより低減することができ
る。さらに、上述した平板３５は、完全な平面状の板に
限定されるものではなく、例えば、小さな小波を形成し
てあっても良い。The number of the laser spots P or the through holes 41 described above can be reduced by increasing the diameter of the laser beam 36 or the through holes 41. Furthermore, the above-mentioned flat plate 35 is not limited to a completely flat plate, and may have a small wavelet, for example.
【００４５】[0045]
【発明の効果】以上述べたように、請求項１のメタル触
媒担体の溶接方法では、担体素子の外側からレーザービ
ームを照射し、波板および平板に直交する方向にレーザ
ービームを貫通させると、レーザービームの熱エネルギ
ーにより貫通部の縁部の波板と平板とが溶融し相互に溶
接されるため、波板と平板とを容易かつ強固に溶接する
ことができる。As described above, in the method for welding a metal catalyst carrier according to the first aspect of the present invention, when the laser beam is irradiated from the outside of the carrier element and the laser beam penetrates in the direction orthogonal to the corrugated plate and the flat plate, The corrugated plate and the flat plate at the edge of the penetrating portion are melted and welded to each other by the thermal energy of the laser beam, so that the corrugated plate and the flat plate can be easily and firmly welded.
【００４６】請求項２のメタル触媒担体の溶接方法で
は、担体素子の波板および平板に直交する方向に形成さ
れる貫通孔に、レーザービームまたは電子ビームを照射
すると、貫通孔の縁部の波板と平板とが溶融し相互に溶
接されるため、波板と平板とを容易かつ強固に溶接する
ことができる。In the method of welding a metal catalyst carrier according to a second aspect, when a laser beam or an electron beam is applied to a through hole formed in a direction orthogonal to the corrugated plate and the flat plate of the carrier element, the wave at the edge of the through hole is radiated. Since the plate and the flat plate are melted and welded to each other, the corrugated plate and the flat plate can be easily and firmly welded.
【００４７】請求項３のメタル触媒担体の溶接方法で
は、波板と平板とを重ねこれ等を多重に巻回した担体素
子の波板と平板とが確実に溶接されるため、波板と平板
との接合が破壊され、波板と平板とが担体素子の軸方向
に突出することがなくなり、フィルムアウト現象を防止
することができるという利点がある。In the method for welding a metal catalyst carrier according to a third aspect of the present invention, since the corrugated plate and the flat plate of the carrier element in which the corrugated plate and the flat plate are superposed and wound in multiple layers are reliably welded, the corrugated plate and the flat plate are welded. There is an advantage that the bond between the corrugated plate and the flat plate is not broken, the corrugated plate and the flat plate do not project in the axial direction of the carrier element, and the film-out phenomenon can be prevented.
【図１】本発明のメタル触媒担体の溶接方法の第１の実
施例を示す説明図である。FIG. 1 is an explanatory diagram showing a first embodiment of a method for welding a metal catalyst carrier of the present invention.
【図２】図１の方法により溶接された波板と平板とを拡
大して示す説明図である。FIG. 2 is an explanatory view showing, in an enlarged manner, a corrugated plate and a flat plate welded by the method of FIG.
【図３】本発明のメタル触媒担体の溶接方法の第２の実
施例を示す説明図である。FIG. 3 is an explanatory view showing a second embodiment of the method for welding a metal catalyst carrier of the present invention.
【図４】図３の方法により溶接された波板と平板とを拡
大して示す説明図である。4 is an explanatory view showing, in an enlarged manner, a corrugated plate and a flat plate welded by the method of FIG.
【図５】従来のメタル触媒担体を示す斜視図である。FIG. 5 is a perspective view showing a conventional metal catalyst carrier.
【図６】波板と平板とを巻回している状態を示す斜視図
である。FIG. 6 is a perspective view showing a state in which a corrugated plate and a flat plate are wound.
【図７】フィルムアウト現象を示す説明図である。FIG. 7 is an explanatory diagram showing a film-out phenomenon.
３１，３９ 担体素子 ３３ 波板 ３５ 平板 ３６ レーザービーム ４１ 貫通孔 ４３ 電子ビーム 31, 39 Carrier element 33 Corrugated plate 35 Flat plate 36 Laser beam 41 Through hole 43 Electron beam
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 32/00 ＺＡＢ 35/04 ３２１ Ａ Ｆ０１Ｎ 3/28 Ｌ // Ｂ２３Ｋ 101:02 Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B01J 32/00 ZAB 35/04 321 A F01N 3/28 L // B23K 101: 02
Claims (3)
を交互に積層してなる担体素子（３１）の前記波板（３
３）と平板（３５）とを溶接するメタル触媒担体の溶接
方法において、 前記担体素子（３１）の外側からレーザービーム（３
６）を照射し、前記波板（３３）および平板（３５）に
直交する方向に前記レーザービーム（３６）を貫通さ
せ、前記波板（３３）と平板（３５）とを相互に溶接す
ることを特徴とするメタル触媒担体の溶接方法。1. A corrugated plate (3) of a carrier element (31) comprising a metal corrugated plate (33) and a flat plate (35) alternately laminated.
3) and a flat plate (35) are welded to each other in the metal catalyst carrier, the laser beam (3
6) to irradiate the laser beam (36) in a direction orthogonal to the corrugated plate (33) and the flat plate (35) to weld the corrugated plate (33) and the flat plate (35) to each other. A method for welding a metal catalyst carrier, the method comprising:
を交互に積層してなる担体素子（３９）の前記波板（３
３）と平板（３５）とを溶接するメタル触媒担体の溶接
方法において、 前記担体素子（３９）の前記波板（３３）および平板
（３５）に直交する方向に貫通孔（４１）を形成した
後、前記貫通孔（４１）にレーザービームまたは電子ビ
ーム（４３）を照射し、前記波板（３３）と平板（３
５）とを相互に溶接することを特徴とするメタル触媒担
体の溶接方法。2. The corrugated plate (3) of a carrier element (39) comprising a metal corrugated plate (33) and a flat plate (35) alternately laminated.
3) In the method for welding a metal catalyst carrier for welding a flat plate (35), a through hole (41) is formed in a direction orthogonal to the corrugated plate (33) and the flat plate (35) of the carrier element (39). Then, the through hole (41) is irradiated with a laser beam or an electron beam (43), and the corrugated plate (33) and the flat plate (3) are irradiated.
5) A method for welding a metal catalyst carrier, which comprises mutually welding and.
媒担体の溶接方法において、 前記担体素子（３１，３９）は、前記波板（３３）と平
板（３５）とを重ね、これ等を多重に巻回してなること
を特徴とするメタル触媒担体の溶接方法。3. The method for welding a metal catalyst carrier according to claim 1, wherein the carrier element (31, 39) has the corrugated plate (33) and the flat plate (35) superposed on each other. A method for welding a metal catalyst carrier, characterized by being wound in multiple layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6199513A JPH0857673A (en) | 1994-08-24 | 1994-08-24 | Welding method for metallic catalyst carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6199513A JPH0857673A (en) | 1994-08-24 | 1994-08-24 | Welding method for metallic catalyst carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0857673A true JPH0857673A (en) | 1996-03-05 |
Family
ID=16409074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6199513A Pending JPH0857673A (en) | 1994-08-24 | 1994-08-24 | Welding method for metallic catalyst carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0857673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761980B2 (en) | 2000-11-15 | 2004-07-13 | Nissan Motor Co., Ltd. | Metallic catalyst carrier |
| JP2008259996A (en) * | 2007-04-13 | 2008-10-30 | Honda Motor Co Ltd | Metal honeycomb carrier |
-
1994
- 1994-08-24 JP JP6199513A patent/JPH0857673A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761980B2 (en) | 2000-11-15 | 2004-07-13 | Nissan Motor Co., Ltd. | Metallic catalyst carrier |
| JP2008259996A (en) * | 2007-04-13 | 2008-10-30 | Honda Motor Co Ltd | Metal honeycomb carrier |
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