JPH0734864A - Metal carrier and manufacture thereof - Google Patents
Metal carrier and manufacture thereofInfo
- Publication number
- JPH0734864A JPH0734864A JP5183688A JP18368893A JPH0734864A JP H0734864 A JPH0734864 A JP H0734864A JP 5183688 A JP5183688 A JP 5183688A JP 18368893 A JP18368893 A JP 18368893A JP H0734864 A JPH0734864 A JP H0734864A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- aluminum
- outer cylinder
- peripheral surface
- corrugated plate
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車エンジン等から
排出される排気ガスを浄化するのに使用されるメタル担
体およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal carrier used for purifying exhaust gas discharged from an automobile engine or the like and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】排気ガス浄化用のメタル担体として、耐
熱金属からなる平板と波板とを交互に積層し、あるいは
重ねた後巻回したハニカム体を外筒に収納したものが種
々開発され、既に一部実用化されている。そして、前記
平板と波板間、およびハニカム体外周面と外筒内表面と
の接合手段としてロウ剤によるものが一般的であるが、
最近では例えば特開平１−１７６４５４号公報や特開平
２−１８０６４４号公報に開示されるように、アルミニ
ウムを浸透させることによって拡散接合するアルミニウ
ム浸透法（カロライジング処理とも称される）を利用す
る方法も提案されている。2. Description of the Related Art Various metal carriers for purifying exhaust gas have been developed, in which flat plates made of heat-resistant metal and corrugated plates are alternately laminated or stacked and then wound and a honeycomb body is housed in an outer cylinder. It has already been partially put into practical use. And, as a bonding means between the flat plate and the corrugated plate and between the outer peripheral surface of the honeycomb body and the inner surface of the outer cylinder, a brazing agent is generally used,
Recently, as disclosed in JP-A-1-176454 and JP-A-2-180644, for example, a method using an aluminum infiltration method (also referred to as a calorizing treatment) in which aluminum is diffusion-bonded by infiltrating aluminum Is also proposed.
【０００３】このアルミニウム浸透法は、金属表面に高
温での優れた酸化防止機能を発揮するアルミニウムを浸
透拡散させるもので高温度の条件下で用いられるメタル
担体には極めて適した処理法として注目されつつある。
ところが、従来のメタル担体はハニカム体の外周面が平
板で構成されており外筒内表面とほぼ密着した状態とな
っているため、アルミニウムがハニカム体と外筒との間
に入り込むことが困難で接合に十分な量のアルミニウム
を供給することができなかった。この結果、ハニカム体
と外筒との接合不良を発生させるとともに生産効率を著
しく低下させるという問題点があった。This aluminum permeation method is a method of permeating and diffusing aluminum exhibiting an excellent antioxidation function at high temperature on a metal surface, and is noticed as a treatment method extremely suitable for a metal carrier used under high temperature conditions. It's starting.
However, in the conventional metal carrier, since the outer peripheral surface of the honeycomb body is formed of a flat plate and is in close contact with the inner surface of the outer cylinder, it is difficult for aluminum to enter between the honeycomb body and the outer cylinder. It was not possible to supply a sufficient amount of aluminum for joining. As a result, there is a problem in that a defective joining of the honeycomb body and the outer cylinder occurs and the production efficiency is significantly reduced.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
従来の問題点を解決して、ハニカム体内部は勿論のこと
ハニカム体外周面と外筒内表面との間にも十分な量のア
ルミニウムを供給することができ、表面にアルミニウム
の拡散層が形成されて優れた耐酸化性を有するととも
に、ハニカム体と外筒とが強固に接合されて優れた品質
を有し、また生産性にも優れて高い歩留り率で製造する
ことができるメタル担体およびその製造方法を提供する
ことを目的として完成されたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art by providing a sufficient amount not only inside the honeycomb body but also between the outer peripheral surface of the honeycomb body and the inner surface of the outer cylinder. Aluminum can be supplied, an aluminum diffusion layer is formed on the surface to have excellent oxidation resistance, and the honeycomb body and the outer cylinder are firmly joined to each other to have excellent quality and also to improve productivity. The present invention has been completed for the purpose of providing a metal carrier which can be manufactured with excellent yield and a manufacturing method thereof.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、耐熱金属からなる平板と波板と
を交互に積層し、あるいは重ねた後巻回したハニカム体
を外筒に収納したメタル担体において、前記ハニカム体
の外周面を波板で構成するとともに該外周面に位置する
波板と外筒との接触部分をアルミニウムの浸透により拡
散接合したことを特徴とするメタル担体を第１の発明と
し、耐熱金属からなる平板と波板とを交互に積層し、あ
るいは重ねた後巻回して外周面が波板で構成されたハニ
カム体を成形し、次いで該ハニカム体を外筒内に挿入し
て一体化した後アルミニウム粉末浴内で加熱し、ハニカ
ム体をアルミニウム拡散処理すると同時に外周面に位置
する波板と外筒との接触部分にもアルミニウムを浸透さ
せ両者を拡散接合することを特徴とするメタル担体の製
造方法を第２の発明とするものである。SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has a structure in which flat plates made of a heat-resistant metal and corrugated plates are alternately laminated, or a honeycomb body wound after being superposed is used as an outer cylinder. In the metal carrier housed in, the outer peripheral surface of the honeycomb body is formed of a corrugated plate, and the contact portion between the corrugated plate located on the outer peripheral surface and the outer cylinder is diffusion-bonded by permeation of aluminum. As a first invention, flat plates made of heat-resistant metal and corrugated plates are alternately laminated, or stacked and wound to form a honeycomb body having an outer peripheral surface composed of corrugated plates, and then the honeycomb body is removed from the outside. After being inserted into the cylinder and integrated, it is heated in an aluminum powder bath to subject the honeycomb body to aluminum diffusion treatment, and at the same time aluminum is also permeated into the contact portion between the corrugated plate located on the outer peripheral surface and the outer cylinder, and both are diffusion bonded. The manufacturing method of the metal carrier according to claim Rukoto is to the second invention.
【０００６】次に、本発明を図面を参照しつつ詳細に説
明する。図中、１は耐熱金属からなる平板1aと波板1bと
を交互に重ねた後巻回して所定寸法に成形されたハニカ
ム体、２は該ハニカム体１を収納した金属製の外筒であ
り、前記ハニカム体１は図２に示されるように、その外
周面を波板1bで覆うよう構成されている。なお、従来の
ハニカム体は外周面が平板1aで覆われたものが普通であ
り、本発明においてはこのような外周面が波板1bで構成
されたハニカム体とした点に特徴を有するものである。
そして、本発明においてはアルミニウム拡散処理により
ハニカム体１の内部は勿論のこと、ハニカム体１の外周
面および外筒２も同様にアルミニウムの浸透による拡散
層が形成されている。Next, the present invention will be described in detail with reference to the drawings. In the figure, 1 is a honeycomb body in which flat plates 1a and corrugated plates 1b made of a heat-resistant metal are alternately stacked and then wound to have a predetermined size, and 2 is a metal outer cylinder accommodating the honeycomb body 1. As shown in FIG. 2, the honeycomb body 1 is configured to cover the outer peripheral surface thereof with a corrugated plate 1b. Incidentally, the conventional honeycomb body is usually one whose outer peripheral surface is covered with a flat plate 1a, and the present invention is characterized in that such an outer peripheral surface is a honeycomb body constituted by a corrugated plate 1b. is there.
In the present invention, not only the inside of the honeycomb body 1 but also the outer peripheral surface of the honeycomb body 1 and the outer cylinder 2 are similarly formed with a diffusion layer by permeation of aluminum by the aluminum diffusion treatment.
【０００７】このように構成されたものにおいては、前
記ハニカム体１の外周面と外筒２の内周面の接触部分、
即ち波板1bの山部と外筒内周面の接触部がアルミニウム
の浸透によって拡散接合されているのであるが、従来の
ハニカム体と異なりハニカム体外周面と外筒内周面との
間には波板1bが介在して十分な隙間が確保されているた
め、この隙間内に十分な量のアルミニウムが供給される
こととなり、該アルミニウムの浸透によってハニカム体
１と外筒２とが強固に拡散接合されたものとなる。In the structure thus constructed, the contact portion between the outer peripheral surface of the honeycomb body 1 and the inner peripheral surface of the outer cylinder 2,
That is, the contact portion between the crests of the corrugated plate 1b and the inner peripheral surface of the outer cylinder is diffusion-bonded by permeation of aluminum, but unlike the conventional honeycomb body, it is between the outer peripheral surface of the honeycomb body and the inner peripheral surface of the outer cylinder. Since the corrugated plate 1b is interposed and a sufficient gap is secured, a sufficient amount of aluminum is supplied into this gap, and the permeation of the aluminum strengthens the honeycomb body 1 and the outer cylinder 2. It will be diffusion bonded.
【０００８】次に、メタル担体の製造方法について説明
すると、先ず図３に示されるように常法に従い平板1aと
波板1bとを交互に重ねた後巻回して所定寸法に成形され
たハニカム体１を成形する。この時、ハニカム体１の外
周面には波板1bが覆っているよう構成する。Next, a method for manufacturing a metal carrier will be described. First, as shown in FIG. 3, a flat plate 1a and a corrugated plate 1b are alternately stacked according to a conventional method and then wound to form a honeycomb body having a predetermined size. Mold 1. At this time, the corrugated plate 1b is configured to cover the outer peripheral surface of the honeycomb body 1.
【０００９】次に、得られたハニカム体１を外筒２内に
挿入して一体化する。一体化する手段としては、例えば
図４に示されるようにテーパ筒状の内壁を有するダイス
３と、該ダイス３内をシリンダ４の作動により進退動す
るセグメント５からなる縮径装置により行うことができ
る。即ち、前記セグメント５は円周方向に僅かな隙間を
隔てて軸方向に多数分割されており、該セグメント５の
内部にハニカム体１と外筒２をセットしたうえセグメン
ト５をダイス３内に引き込み縮径することにより、所定
寸法のものとする。また図５に示されるように、絞り環
６により外筒２をハニカム体１に沿わせつつ縮径し所定
寸法のものとすること等もできる。Next, the obtained honeycomb body 1 is inserted into the outer cylinder 2 and integrated. As a means for integration, for example, as shown in FIG. 4, a diameter reducing device composed of a die 3 having a tapered cylindrical inner wall and a segment 5 that moves back and forth in the die 3 by the operation of the cylinder 4 can be used. it can. That is, the segment 5 is divided into a large number in the axial direction with a slight gap in the circumferential direction, and the honeycomb body 1 and the outer cylinder 2 are set inside the segment 5 and the segment 5 is drawn into the die 3. By reducing the diameter, it has a predetermined size. Further, as shown in FIG. 5, it is also possible to reduce the diameter of the outer cylinder 2 along the honeycomb body 1 by the throttle ring 6 to obtain a predetermined size.
【００１０】次いで、得られたメタル担体を密閉された
浴槽７のアルミニウム粉末、フェロアルミニウム粉末、
Fe−Al合金粉末あるいはそれらの配合物からなる浴内に
埋入し８００〜１０００℃で十数時間加熱する。これに
より、ハニカム体１をアルミニウム拡散処理して表面に
耐酸化性に優れたアルミニウムの層を形成すると同時
に、波板1bと外筒２との接触部分にもアルミニウムを浸
透させ両者を拡散接合しハニカム体１と外筒２とが強固
に接合されたメタル担体を得る。なお、アルミニウム拡
散処理の条件については処理すべき担体の大きさやアル
ミニウム粉末等の配合比などに応じて、任意に設定すれ
ばよい。Next, the obtained metal carrier is filled with aluminum powder in a bath 7, ferroaluminum powder,
It is embedded in a bath composed of Fe-Al alloy powder or a mixture thereof and heated at 800 to 1000 ° C. for ten hours or more. As a result, the honeycomb body 1 is subjected to aluminum diffusion treatment to form an aluminum layer having excellent oxidation resistance on the surface, and at the same time aluminum is permeated into the contact portion between the corrugated plate 1b and the outer cylinder 2 to perform diffusion bonding of both. A metal carrier in which the honeycomb body 1 and the outer cylinder 2 are firmly joined is obtained. The conditions for the aluminum diffusion treatment may be arbitrarily set according to the size of the carrier to be treated, the compounding ratio of aluminum powder and the like.
【００１１】[0011]
【実施例】一般低炭素鋼よりなる巾１１０mm、厚み６０
μm の箔からなる閉板と波板とを交互に重ねた後巻回し
て外周面が波板で構成されたハニカム体を成形し、同じ
く低炭素鋼よりなる厚み１．５mm、直径１０１mm、長さ
１１０mmの外筒内に前記ハニカム体を挿入後、縮径して
直径１００mm、長さ１１０mmの形状とした。次いで、こ
れをFe−Al合金粉末浴内に埋入して８５０℃で２０時間
加熱しアルミニウム拡散処理を施した。得られたメタル
担体は、全周にわたってハニカム体と外筒とが強固に接
合されており接合不良のない高品質のものであった。ま
た、ハニカム体と外筒との接合部分における円周方向の
断面を切りアルミニウム濃度を測定した結果、図６に示
されるように両者の接触部分にも１０％以上の十分なア
ルミニウムが浸透していることが判明した。なお、外周
面が平板で構成された従来タイプのハニカム体を用いた
メタル担体について同様の測定をした結果、図７に示さ
れるとおりハニカム体と外筒との接合部分にほとんどア
ルミニウムの浸透が見られず、また両者間の接合不良も
発生するものであり、従来例に比べて本発明の優れた効
果が確認できた。[Example] A width of 110 mm and a thickness of 60 made of general low carbon steel
Alternately laminated closed plates and corrugated plates made of foil with a thickness of μm were wound and formed into a honeycomb body whose outer peripheral surface was composed of corrugated plates. The honeycomb body was also made of low carbon steel and had a thickness of 1.5 mm, a diameter of 101 mm, and a long length. After the honeycomb body was inserted into an outer cylinder having a length of 110 mm, the diameter was reduced to form a shape having a diameter of 100 mm and a length of 110 mm. Then, this was embedded in an Fe-Al alloy powder bath and heated at 850 ° C. for 20 hours for aluminum diffusion treatment. The obtained metal carrier was of high quality in which the honeycomb body and the outer cylinder were firmly bonded over the entire circumference and there was no bonding failure. In addition, as a result of cutting the cross section in the circumferential direction at the joint portion between the honeycomb body and the outer cylinder and measuring the aluminum concentration, as shown in FIG. It turned out that As a result of performing the same measurement on a metal carrier using a conventional type honeycomb body having a flat outer peripheral surface, almost no penetration of aluminum was observed in the joint portion between the honeycomb body and the outer cylinder as shown in FIG. In addition, the bonding failure between the two occurred, and the excellent effect of the present invention was confirmed as compared with the conventional example.
【００１２】[0012]
【発明の効果】以上の説明からも明らかなように、第１
の発明はハニカム体内部は勿論のことハニカム体外周面
と外筒内表面との間にも十分な量のアルミニウムが供給
されて表面に高濃度のアルミニウム拡散層が形成され優
れた耐酸化性を有するとともに、ハニカム体と外筒とが
強固に接合されて接合不良のない優れた品質を有するも
のである。また、第２の発明は上記のようなメタル担体
を高い歩留り率で効率よく製造することができるもので
ある。よって本発明は従来の問題点を一掃したメタル担
体およびその製造方法として、産業の発展に寄与すると
ころは極めて大である。As is apparent from the above description, the first
In the invention of, the sufficient amount of aluminum is supplied not only inside the honeycomb body but also between the outer peripheral surface of the honeycomb body and the inner surface of the outer cylinder, and a high-concentration aluminum diffusion layer is formed on the surface to provide excellent oxidation resistance. In addition to that, the honeycomb body and the outer cylinder are firmly bonded to each other and have excellent quality without defective bonding. The second aspect of the invention is capable of efficiently producing the metal carrier as described above with a high yield rate. Therefore, the present invention, as a metal carrier and a method for manufacturing the same that eliminates the conventional problems, has a great contribution to the industrial development.
【図１】本発明に係るメタル担体の切欠斜視図である。FIG. 1 is a cutaway perspective view of a metal carrier according to the present invention.
【図２】本発明に係るハニカム体の斜視図である。FIG. 2 is a perspective view of a honeycomb body according to the present invention.
【図３】本発明の製造方法の概略を示す工程説明図であ
る。FIG. 3 is a process explanatory view showing the outline of the manufacturing method of the present invention.
【図４】本発明におけるハニカム体と外筒の縮径工程を
示す説明図である。FIG. 4 is an explanatory view showing a step of reducing the diameter of the honeycomb body and the outer cylinder in the present invention.
【図５】本発明におけるその他のハニカム体と外筒の縮
径工程を示す説明図である。[Fig. 5] Fig. 5 is an explanatory view showing a process of reducing the diameter of another honeycomb body and an outer cylinder in the present invention.
【図６】本発明の実施例におけるアルミニウムの濃度分
布を示す説明図である。FIG. 6 is an explanatory diagram showing a concentration distribution of aluminum in the example of the present invention.
【図７】比較例におけるアルミニウムの濃度分布を示す
説明図である。FIG. 7 is an explanatory diagram showing an aluminum concentration distribution in a comparative example.
１ ハニカム体 1a 平板 1b 波板 ２ 外筒 1 Honeycomb body 1a Flat plate 1b Corrugated plate 2 Outer cylinder
───────────────────────────────────────────────────── 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 35/04 ３２１ Ａ 8017−4Ｇ Ｂ２１Ｄ 47/00 Ｃ Ｂ２３Ｋ 20/00 ３１０ Ｌ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B01J 35/04 321 A 8017-4G B21D 47/00 C B23K 20/00 310 L
Claims (2)
積層し、あるいは重ねた後巻回したハニカム体を外筒に
収納したメタル担体において、前記ハニカム体の外周面
を波板で構成するとともに該外周面に位置する波板と外
筒との接触部分をアルミニウムの浸透により拡散接合し
たことを特徴とするメタル担体。1. A metal carrier in which a flat plate made of a heat-resistant metal and a corrugated plate are alternately laminated, or a honeycomb body wound after being superposed is housed in an outer cylinder, and the outer peripheral surface of the honeycomb body is formed of a corrugated plate. In addition, the metal carrier characterized in that the contact portion between the corrugated plate located on the outer peripheral surface and the outer cylinder is diffusion-bonded by permeation of aluminum.
積層し、あるいは重ねた後巻回して外周面が波板で構成
されたハニカム体を成形し、次いで該ハニカム体を外筒
内に挿入して一体化した後アルミニウム粉末浴内で加熱
し、ハニカム体をアルミニウム拡散処理すると同時に外
周面に位置する波板と外筒との接触部分にもアルミニウ
ムを浸透させ両者を拡散接合することを特徴とするメタ
ル担体の製造方法。2. A flat plate made of a heat-resistant metal and a corrugated plate are alternately laminated or stacked and then wound to form a honeycomb body having an outer peripheral surface made of a corrugated plate, and then the honeycomb body is placed in an outer cylinder. After being integrated with the aluminum body, the honeycomb body is heated in an aluminum powder bath to perform aluminum diffusion treatment, and at the same time, aluminum is also permeated into the contact portion between the corrugated plate located on the outer peripheral surface and the outer cylinder to perform diffusion bonding of both. A method for producing a metal carrier, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5183688A JPH0734864A (en) | 1993-07-26 | 1993-07-26 | Metal carrier and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5183688A JPH0734864A (en) | 1993-07-26 | 1993-07-26 | Metal carrier and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0734864A true JPH0734864A (en) | 1995-02-03 |
Family
ID=16140199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5183688A Withdrawn JPH0734864A (en) | 1993-07-26 | 1993-07-26 | Metal carrier and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734864A (en) |
-
1993
- 1993-07-26 JP JP5183688A patent/JPH0734864A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001003 |