JP3274233B2 - Honeycomb body - Google Patents
Honeycomb bodyInfo
- Publication number
- JP3274233B2 JP3274233B2 JP14127293A JP14127293A JP3274233B2 JP 3274233 B2 JP3274233 B2 JP 3274233B2 JP 14127293 A JP14127293 A JP 14127293A JP 14127293 A JP14127293 A JP 14127293A JP 3274233 B2 JP3274233 B2 JP 3274233B2
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- brazing
- strip
- joint
- face
- 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.)
- Expired - Fee Related
Links
- 238000005219 brazing Methods 0.000 claims description 67
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 description 59
- 238000000034 method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 239000011230 binding agent Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一般に自動車の排気ガ
ス浄化手段として排気系統の途中に介装されて使用され
る排気ガス浄化装置、特にその主要な構成要素である排
気ガス浄化用触媒を担持するための金属製のハニカム体
（以下、単にハニカム体という。）に関する。更に詳し
くは、本発明は、特殊なろう接合手段を適用して製作さ
れた耐久性に優れるハニカム体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas purifying apparatus which is generally used as an exhaust gas purifying means of an automobile and is provided in the middle of an exhaust system, and particularly to an exhaust gas purifying catalyst which is a main component thereof. The present invention relates to a metal honeycomb body for carrying (hereinafter, simply referred to as a honeycomb body). More specifically, the present invention relates to a highly durable honeycomb body manufactured by applying a special brazing means.
【０００２】[0002]
【従来の技術】従来、この種の排気ガス浄化用触媒（例
えばＰt ，Ｒh ，Ｐd などを使用した触媒）を担持させ
るための金属製担持母体は、単位体積当りの触媒の担持
量を大きくすること（単位体積当りの排気ガスと浄化用
触媒との有効接触面積を極力大きくすること）、背圧
（排気抵抗）を小さくすること、更には金属担持母体の
自重を可能な限り軽量化すること、などを考慮し、耐熱
性でかつ薄肉金属製の平板状帯材と波板状帯材を相互に
当接するように重積してハニカム状の構造体としたハニ
カム体が良く知られている。なお、ハニカム体を成形す
る方法の相違により積層タイプ、巻回タイプ、放射状タ
イプ、Ｓ字状タイプ、巴状タイプ、あるいはＸラップ
（卍状）タイプなど種々のハニカム体が得られる。2. Description of the Related Art Conventionally, a metal supporting base for supporting this kind of exhaust gas purifying catalyst (for example, a catalyst using Pt, Rh, Pd, etc.) increases the amount of the supported catalyst per unit volume. (To maximize the effective contact area between the exhaust gas and the purifying catalyst per unit volume), to reduce the back pressure (exhaust resistance), and to reduce the weight of the metal carrier as much as possible. In consideration of the above, a honeycomb body having a honeycomb-shaped structure formed by stacking a heat-resistant and thin metal flat plate and a corrugated band so as to abut each other is well known. . Depending on the method of forming the honeycomb body, various types of honeycomb bodies such as a laminated type, a wound type, a radial type, an S-shaped type, a Tomoe type, and an X-wrap (swastika) type can be obtained.
【０００３】前記したハニカム体は、例えば、図１に示
されるように0.1mm 以下（好ましくは50μm 以下）の耐
熱性の薄肉鋼板からなる平板状帯材（１）と、前記薄肉
鋼板に波形を成形した波板状帯材（２）とを、相互に当
接部を有するように重積し、これを一括渦巻き状に巻回
して軸方向に排気ガス通路のための多数の網目状通気孔
路（セル）（３）をもつ巻回タイプのハニカム体（Ｈ）
とされる。そして、この巻回積層されたハニカム体は、
必要に応じて両端が開口した筒状の金属製ケース（４）
に収納されるとともに相互に接合固着され、耐振構造の
メタル担体（ＭＳ、メタルサポート）とされる。As shown in FIG. 1, for example, the above-mentioned honeycomb body has a flat strip material (1) made of a heat-resistant thin steel plate having a thickness of 0.1 mm or less (preferably 50 μm or less), and a corrugated sheet formed on the thin steel plate. The formed corrugated sheet material (2) is piled up so as to have an abutting portion with each other, and is wound in a spiral to form a large number of mesh-shaped ventilation holes for exhaust gas passages in the axial direction. Wound type honeycomb body (H) having road (cell) (3)
It is said. And the honeycomb body wound and laminated,
Cylindrical metal case with both ends open as needed (4)
And a metal carrier (MS, metal support) having an anti-vibration structure.
【０００４】周知のように、この種の排気ガス浄化装置
の主要な構成要素であるメタル担体（ＭＳ）は、排気ガ
ス系統という厳しい熱的環境条件のもとで使用される関
係上、その主要な構成要素であるハニカム体は、高温耐
蝕性（耐ガス腐食性、1000℃前後の排気ガス系における
耐蝕性）、耐冷熱耐久性（内燃機関の停止及び始動とい
うサイクルでの耐久性）、耐高温酸化性（高温下での異
常酸化に対する耐久性）などの諸物性に優れた耐熱鋼の
箔材で製作されることが好ましい。この種のハニカム体
製造用の材料としては、Ｆe −Ｃr −Ａl 系（20Ｃr −
5Ａl 系など）の耐熱鋼を厚さ数十μm の箔に圧延した
ものが使用されている。また、前記耐熱鋼の耐高温酸化
性を改善するために、少量の希土類元素成分（ＲＥＭ）
を添加したものも使用されている。As is well known, a metal carrier (MS), which is a main component of this type of exhaust gas purifying apparatus, is used mainly under severe thermal environmental conditions such as an exhaust gas system, so that its main component is a metal carrier (MS). Honeycomb body, which is an important component, has high temperature corrosion resistance (gas corrosion resistance, corrosion resistance in exhaust gas system around 1000 ° C), cold heat resistance (durability in the cycle of stopping and starting the internal combustion engine), It is preferable to be made of a heat-resistant steel foil material excellent in various physical properties such as high-temperature oxidation property (durability against abnormal oxidation under high temperature). As a material for manufacturing this kind of honeycomb body, an Fe-Cr-Al system (20Cr-
5Al heat-resistant steel rolled into foil with a thickness of several tens of μm is used. In order to improve the high temperature oxidation resistance of the heat resistant steel, a small amount of rare earth element (REM) is used.
The addition of is also used.
【０００５】また、メタル担体（ＭＳ）は厳しい振動付
加のもとで使用される関係上、その主要な構成要素であ
るハニカム体は、該ハニカム体を構成する帯材同士の当
接部の一部あるいは全部が溶接やろう材等により固着さ
れ耐振構造のものとされる。In addition, since the metal carrier (MS) is used under severe vibrations, the main component of the honeycomb body is a honeycomb body, which is one of the abutting portions of the strips constituting the honeycomb body. A part or the whole is fixed by welding, brazing material or the like, and has a vibration-proof structure.
【０００６】前記した、ハニカム体の溶接やろう材によ
る固着技術としては、多くのものが提案されている。例
えば、溶接による接合手段としては、特開昭５４−１３
４６２号、実開昭６２−１５６１１２号、特開昭６３−
３６８４３号などにレーザビーム溶接、電子ビーム溶
接、プラズマビーム溶接などが提案されている。しかし
ながら、これら各種の溶接手段においては、高価な溶接
材器の使用、溶接作業の煩雑さ、低生産性などの欠点、
更には前記したようにハニカム体の構成部分が耐熱性の
ものであることから、溶接部には高温が印加され溶接部
が鋳造組織でもろくなる等の欠点を有するものである。[0006] Many techniques have been proposed as the above-mentioned techniques for fixing the honeycomb body by welding or brazing. For example, as a joining means by welding, JP-A-54-13
No. 462, Japanese Utility Model Application Laid-Open No. Sho 62-156112,
No. 36843 proposes laser beam welding, electron beam welding, plasma beam welding and the like. However, in these various welding means, disadvantages such as the use of expensive welding equipment, the complexity of welding work, and low productivity,
Further, as described above, since the constituent parts of the honeycomb body are heat-resistant, there is a disadvantage that a high temperature is applied to the welded portion and the welded portion becomes brittle in a cast structure.
【０００７】一方、ハニカム体の製造技術において、ろ
う材による固着手段は前記した溶接による欠点をもたな
いため優れたものである。この種のろう材による接合手
段としては、特開昭５６−４３７３号や特公昭６３−４
４４６６号などに、ろう材による母材の劣化やハニカム
体の熱応力の緩和、吸収を考慮しつつハニカム体を構成
する帯材同士の当接部の一部あるいは全部にろう材を適
用する方法が提案されている。On the other hand, in the honeycomb body manufacturing technique, the fixing means using a brazing material is excellent because it does not have the above-mentioned disadvantages caused by welding. Japanese Patent Application Laid-Open No. Sho 56-4373 and Japanese Patent Publication No. Sho 63-4
No. 4466, etc., a method in which the brazing material is applied to a part or all of the contact portions between the strips constituting the honeycomb body while taking into consideration the deterioration of the base material due to the brazing material and the relaxation and absorption of the thermal stress of the honeycomb body. Has been proposed.
【０００８】前記したように、メタル担体（ＭＳ）の主
要な構成要素であるハニカム体において、耐久性（耐振
性、耐熱強度など）を向上、改善するために材料面や耐
振構造の面から努力が払われているが、十分なものでは
ない。特に、ハニカム体においては、前記した厳しい熱
的環境条件下において、極めて大きな熱変形力がハニカ
ム体の各部に印加され（ハニカム体の半径方向と軸方向
の両者）、これに振動条件が加わるため、その耐久性の
改善は大きな問題である。As described above, in the honeycomb body, which is a main component of the metal carrier (MS), efforts are made in terms of materials and vibration-resistant structure to improve and improve the durability (vibration resistance, heat resistance strength, etc.). Is paid, but not enough. In particular, in the honeycomb body, under the severe thermal environment conditions described above, an extremely large thermal deformation force is applied to each part of the honeycomb body (both in the radial direction and the axial direction of the honeycomb body), and vibration conditions are added thereto. Improving its durability is a major problem.
【０００９】[0009]
【発明が解決しようとする問題点】本発明は、前記した
ようにハニカム体の耐久性を向上させようとするもので
ある。特に、本発明者らは、ハニカム体の端面部に観察
される該ハニカム体の構成部材である平板状帯材及び／
又は波板状帯材の破損現象について注目している。DISCLOSURE OF THE INVENTION The present invention aims to improve the durability of a honeycomb body as described above. In particular, the present inventors have disclosed a flat band material and / or a component member of the honeycomb body observed on the end face of the honeycomb body.
Or, attention is paid to the damage phenomenon of the corrugated strip.
【００１０】ハニカム体の端面部において観察される帯
材の破損に対する改善策は、従来技術では配慮されてお
らず、この点、本発明者らは先に二〜三の提案を行なっ
た。例えば、（イ）ハニカム体の端面部を、平板状帯材
と波板状帯材の両者で面一とするのでなく、いずれか一
方の帯材を他方より突出させるように構成する（特願平
４−１３１３６５号）、あるいは、（ロ）ハニカム体の
端面部にみられる平板状帯材及び／又は波板状帯材の亀
裂及びその成長の主因が、帯材端部のミクロ構造に由来
するものであり、これを解消するために帯材のエッジ端
部をエネルギー加工して不規則構造を持たないようにす
る（特願平４−２７３５４２号）、などの提案を行っ
た。In the prior art, no measures have been taken to improve the breakage of the strip observed at the end face of the honeycomb body. In this regard, the present inventors have previously made a few proposals. For example, (a) the end face portion of the honeycomb body is configured not to be flush with both the flat band material and the corrugated band material, but to be configured so that either one of the band materials protrudes from the other. The cracks of the flat and / or corrugated strips observed at the end face of the honeycomb body and the main factor of the growth are derived from the microstructure at the end of the strip. In order to solve this problem, it has been proposed that the edge of the strip is subjected to energy processing so as not to have an irregular structure (Japanese Patent Application No. 4-273542).
【００１１】本発明は、前記したハニカム体の端面部に
おける帯材の破損対策という課題を、ろう接合手段の改
良により解消しようとするものである。本発明は、ハニ
カム体の端面部において、ハニカム体を構成する平板状
帯材と波板状帯材との当接部がろう接合されない領域
（非ろう接合部）を設けた場合、前記した欠点が効果的
に解消されるという知見にベースを置くものであり、本
発明により耐久性に優れたハニカム体が提供される。An object of the present invention is to solve the above-mentioned problem of measures against breakage of a strip at the end face of a honeycomb body by improving brazing means. The present invention provides the above-described drawbacks when the end face of the honeycomb body is provided with a region where the contact portion between the flat band member and the corrugated band member constituting the honeycomb body is not brazed (non-brazed portion). Is effectively eliminated, and the present invention provides a honeycomb body having excellent durability.
【００１２】[0012]
【問題点を解決するための手段】本発明を概説すれば、
本発明は、薄肉金属板製の平板状帯材と波板状帯材を相
互に当接するように重積して製作され、かつ前記平板状
帯材と波板状帯材の所望の当接部がろう接合されて成る
排気ガス浄化用触媒を担持するためのハニカム体におい
て、前記ハニカム体が、少なくとも一方の端面部に、端
面から１ｍｍ以上、５ｍｍ以内の非ろう接合部を有する
もので構成されたものである、ことを特徴とするハニカ
ム体に関するものである。SUMMARY OF THE INVENTION In summary of the present invention,
The present invention is manufactured by stacking a flat metal strip made of a thin metal plate and a corrugated metal strip so as to abut each other, and a desired abutment between the flat metal strip and the corrugated metal strip. A honeycomb body for supporting an exhaust gas purifying catalyst having a brazed portion joined thereto, wherein the honeycomb body has a non-brazed joint portion of at least one end face portion of 1 mm or more and 5 mm or less from the end face. The present invention relates to a honeycomb body characterized in that it has been made.
【００１３】以下、本発明の技術的構成及び実施態様を
図面を参照して詳しく説明する。なお、本発明は図示の
ものに限定されないことはいうまでもないことである。
前記したように、本発明は、ハニカム体の端面部におい
て観察される平板状帯材及び／又は波板上帯材の破損、
亀裂とそれらの成長などに注目して、ハニカム体の耐久
性を改善しようとするものである。本発明者らは、前記
ハニカム体における耐久性の低下原因は、従来のろう接
合手段にあると考えている。即ち、ハニカム体の構成部
材である平板状帯材と波板上帯材との当接部、特にハニ
カム体の端面部及びその近傍部位の当接部は、従来のろ
う接合法においては全てがろう接合されるという態様で
行なわれている。Hereinafter, the technical structure and embodiments of the present invention will be described in detail with reference to the drawings. It goes without saying that the present invention is not limited to the illustrated one.
As described above, the present invention provides a flat band material and / or a corrugated upper band material which are observed at an end face of a honeycomb body,
It is intended to improve the durability of the honeycomb body by focusing on cracks and their growth. The present inventors believe that the cause of the decrease in the durability of the honeycomb body is the conventional brazing means. That is, the contact portion between the flat band material and the corrugated upper band material, which are the constituent members of the honeycomb body, particularly, the contact portions at the end face portion of the honeycomb body and the vicinity thereof are all formed by the conventional brazing method. It is performed in a mode of being brazed.
【００１４】前記した従来のろう接合法においては、次
のようにしてハニカム体の端面部及びその近傍部位の耐
久性が低下する。 （ｉ）ろう接合時に、ろう材の金属成形が帯材中に熱拡
散し金属間化合物を作り脆化するため、また熱膨脹率が
部分的に変化するため、端部の耐久性低下の原因を作り
出す。 （ii）ハニカム体の使用中に、大きな熱変形力がハニカ
ム体の端部に集中、重積するため、端部の帯材の破損、
亀裂とその成長が増大される。 （iii ）更にハニカム体の使用中に、激しい振動が印加
されるため、前記破損、 亀裂とのその成長が加速
される。In the above-mentioned conventional brazing method, the durability of the end face of the honeycomb body and the vicinity thereof is reduced as follows. (I) During brazing, the metal forming of the brazing material is thermally diffused into the band material to form an intermetallic compound, which causes embrittlement, and the coefficient of thermal expansion partially changes, which causes the end portion to have reduced durability. produce. (Ii) During the use of the honeycomb body, a large thermal deformation force is concentrated and piled up on the end of the honeycomb body, so that the strip of the end is damaged,
Cracks and their growth are increased. (Iii) Further, during the use of the honeycomb body, violent vibration is applied, so that the growth of the breakage and cracks is accelerated.
【００１５】前記したことから、ハニカム体の耐久性、
特に端面部における耐久性を向上させるためには、ハニ
カム体を構成する平板状帯材と波板上帯材との端面部近
傍における当接部のろう接合法の改善を図らなければな
らない。このため、本発明は、ハニカム体に適用するろ
う接合手段として、ハニカム体の少なくとも一方の端面
部に、端部から所望幅の非ろう接合部を設けるという技
術的構成を採用するものである。[0015] From the above, the durability of the honeycomb body,
In particular, in order to improve the durability at the end face, it is necessary to improve the brazing method of the contact portion near the end face between the flat band material and the upper corrugated sheet material constituting the honeycomb body. For this reason, the present invention employs a technical structure in which a non-brazing joint having a desired width from the end is provided on at least one end face of the honeycomb body as the brazing joint applied to the honeycomb body.
【００１６】図１〜図３は、本発明のろう接合手段を適
用して製作された巻回タイプのハニカム体を説明するも
のである。図１は、本発明のハニカム体の一部を透視し
た斜視図である。図２は図１のハニカム体の一部を省略
した断面図である。図３は、ハニカム体の端面部を拡大
した斜視図である。図示されるように、平板状帯材
（１）と波板上帯材（２）からなる巻回タイプのハニカ
ム体（Ｈ）は、（ｉ）両端面に幅（ＷN ）の非ろう接合
部（ＮＢＡ）を設ける、（ii）前記非ろう接合部（ＮＢ
Ａ）に隣接して幅（ＷB ）のろう接合部（ＢＡ）を設け
る、という態様で製作されるものである。FIGS. 1 to 3 illustrate a wound type honeycomb body produced by applying the brazing means of the present invention. FIG. 1 is a perspective view in which a part of the honeycomb body of the present invention is seen through. FIG. 2 is a cross-sectional view in which a part of the honeycomb body of FIG. 1 is omitted. FIG. 3 is an enlarged perspective view of an end face portion of the honeycomb body. As shown in the figure, a wound type honeycomb body (H) composed of a flat strip (1) and a corrugated upper strip (2) has (i) a non-brazing joint having a width (W N ) at both end faces. (Ii) the non-brazing joint (NB)
It is manufactured in such a manner that a brazing joint (BA) having a width (W B ) is provided adjacent to A).
【００１７】本発明において、前記非ろう接合部（ＮＢ
Ａ）の幅（ＷN ）は、所望の幅のものに設定されるが、
少なくとも１mm以上の幅であることが好ましい。また、
波板状帯材の波のピッチ幅に注目すれば、少なくとも１
ピッチ分の幅を有することが好ましい。本発明におい
て、前記ろう接合部（ＢＡ）の幅（ＷB ） は、ハニカ
ム体の半径方向及び／又は軸方向の熱変形力の吸収、緩
和特性を考慮して、適宜に設定すればよい。なお、図１
〜図３の態様のものにおいては、両端部の近傍部位にろ
う接合部（ＢＡ）を設けているが、該ろう接合部（Ｂ
Ａ）を一つの端面部の近傍部位にのみ設けてもよいこと
はいうまでもないことである。その他、前記した所定幅
（ＷN ）の非ろう接合部（ＮＢＡ）を設けるという条件
が維持されていれば、従来既知の種々の態様でろう接合
部（ＢＡ）を設けてよいことはいうまでもないことであ
る。In the present invention, the non-brazing joint (NB)
The width (W N ) of A) is set to a desired width.
The width is preferably at least 1 mm or more. Also,
Focusing on the pitch of the waves of the corrugated strip, at least 1
It is preferable to have a width corresponding to the pitch. In the present invention, the width (W B ) of the brazed joint (BA) may be appropriately set in consideration of the absorption and relaxation characteristics of the honeycomb body in the radial and / or axial directions. FIG.
3, the brazing joint (BA) is provided in the vicinity of both ends, but the brazing joint (B)
It goes without saying that A) may be provided only in the vicinity of one end face. In addition, as long as the condition of providing the non-brazing joint (NBA) having the predetermined width (W N ) is maintained, it is needless to say that the brazing joint (BA) may be provided in various conventionally known modes. There is no such thing.
【００１８】本発明において、ろう材として当業界にお
いて既知のものを採用すればよく、特段の制約を受ける
ものではない。例えば、Ｎi 、Ａl 、Ｃr 、Ｆe のいず
れか、またはこれら成分を組合わせたものを主成分とす
るろう材を用いればよい。また、前記成分にＹ、Ｌa 、
Ｃe 、Ｔi 、Ｚr などを加えて、耐高温酸化性などを向
上させたろう材を用いてもよい。更にろう材の溶融温度
を変えるためにＳi などを添加してもよい。なお、本発
明において、ハニカム体を構成する帯材（１、２）とし
てＡl 成分を添加したものを使用する場合、Ｎi 系のろ
う材を使用すると母材中のＡl とＮi が容易に合金化反
応を起し、耐高温酸化性を付与するＡｌ2 Ｏ3 の形成量
が減少してしまうことになる。この意味から、Ｎi を含
まない、例えばＡl 系のろう材が好ましく、このような
ろう材は、低い温度で十分な強度のろう接合が出来、か
つハニカム体の耐高温酸化性を向上させることが出来
る。前記したように、本発明において非ろう接合部にろ
う材が存在しないことが重要であって、該非ろう接合部
の帯材（１，２）の当接部が熱拡散により拡散接合され
ること自体は問題ではない。In the present invention, what is known in the art may be used as the brazing material, and there is no particular limitation. For example, a brazing material mainly containing Ni, Al, Cr, or Fe or a combination of these components may be used. Further, Y, La,
A brazing material having improved high-temperature oxidation resistance may be used by adding Ce, Ti, Zr, or the like. Further, Si or the like may be added to change the melting temperature of the brazing material. In the present invention, when the Al (Ni) -based brazing material is used as the band material (1, 2) constituting the honeycomb body, the use of Ni-based brazing material facilitates the alloying of Al and Ni in the base material. A reaction occurs, and the amount of Al 2 O 3 that imparts high-temperature oxidation resistance is reduced. In this sense, for example, an Al-based brazing material that does not contain Ni is preferable. Such a brazing material is capable of performing brazing with sufficient strength at a low temperature and improving the high-temperature oxidation resistance of the honeycomb body. I can do it. As described above, in the present invention, it is important that the brazing material does not exist in the non-brazing joint, and the contact portions of the strips (1, 2) of the non-brazing joint are diffusion-bonded by thermal diffusion. It doesn't matter.
【００１９】以下、ハニカム体（Ｈ）の端面部におい
て、前記した所定幅（ＷN ）の非ろう接合部（ＮＢＡ）
ならびに所定幅（ＷB ）のろう接合部（ＢＡ）を設ける
ための平板状帯材（１）に注目して説明する。なお、本
発明において、前記非ろう接合部（ＮＢＡ）を設ける態
様は平板状帯材（１）に限定されず、波板状帯材（２）
に適用されてもよいことはいうまでもないことである。
更にまた、本発明において、所定幅（ＷB ）のろう接合
部（ＢＡ）を設ける態様に特に制限を受けないことはい
うまでもないことである。例えば、波板状帯材（２）の
波形の頂部にのみろう材を適用してろう接合する方法な
どが採用される。Hereinafter, a non-brazing joint (NBA) having a predetermined width (W N ) at the end face of the honeycomb body (H).
The following description focuses on the flat band material (1) for providing the brazed joint (BA) having a predetermined width (W B ). In the present invention, the mode in which the non-brazing joint (NBA) is provided is not limited to the flat strip (1), but the corrugated strip (2).
Needless to say, it may be applied to
Furthermore, in the present invention, it goes without saying that there is no particular limitation on the mode in which the brazing joint (BA) having a predetermined width (W B ) is provided. For example, a method in which a brazing material is applied only to the top of the corrugation of the corrugated sheet material (2) and brazing is performed is employed.
【００２０】図４は、所定幅（ＷN ）の非ろう接合部
（ＮＢＡ）ならびに所定幅（ＷB ）のろう接合部（Ｂ
Ａ）を設けるための平板状帯材（１）に適用される第一
実施態様を説明する図である。即ち、図４の態様は、平
板状帯材（１）（一部が省略されて図示されている。）
に、その端部から非ろう接合部（ＮＢＡ）を形成するた
めの幅（ＷN ）を残して後工程で散布される粉末状ろう
材用のバインダー（接着剤）により所定幅（ＷB ）のバ
インダー被膜部（５）を形成するものである。前記平板
状帯材（１）には、Ｎi 系などの高温ろう材が散布さ
れ、波板状帯材（２）と共に例えば巻回形成されて巻回
タイプのハニカム体（Ｈ）とされ、真空炉などで加熱処
理されてろう接合される。このとき、前記バインダー被
膜部（５）がろう接合部（ＢＡ）になることはいうまで
もないことである。なお、本発明において、前記した態
様の変形例として、バインダーと粉末状ろう材を混合し
たろう材のペーストによりバインダー被膜部（５）とし
てもよいことはいうまでもないことである。FIG. 4 shows a non-brazing joint (NBA) having a predetermined width (W N ) and a brazing joint ( B ) having a predetermined width (W B ).
It is a figure explaining the 1st embodiment applied to flat strip material (1) for providing A). That is, in the embodiment of FIG. 4, the flat band material (1) (partially omitted is shown).
Then, a predetermined width (W B ) is formed by a binder (adhesive) for a powdery brazing material sprayed in a subsequent step, leaving a width (W N ) for forming a non-brazing joint (NBA) from the end. To form a binder coating (5). A high-temperature brazing material such as a Ni-based material is sprayed on the flat strip material (1), and is wound, for example, together with the corrugated strip material (2) to form a wound honeycomb body (H). It is heat-treated in a furnace or the like and brazed. At this time, it goes without saying that the binder coating (5) becomes the brazing joint (BA). In the present invention, as a modified example of the above-described embodiment, it goes without saying that the binder coating portion (5) may be made of a paste of a brazing material in which a binder and a powdery brazing material are mixed.
【００２１】図５は、所定幅（ＷN ）の非ろう接合部
（ＮＢＡ）ならびに所定幅（ＷB ）のろう接合部（Ｂ
Ａ）を設けるための平板状帯材（１）に適用される第二
実施態様を説明する図である。図５の態様は、図４と比
較して相違する点は、バインダー被膜部（５）のかわり
にろう材箔部（６）を設けている点である。この場合、
後工程でろう材を適用する工程が省略されることはいう
までもない。FIG. 5 shows a non-brazing joint (NBA) having a predetermined width (W N ) and a brazing joint ( B ) having a predetermined width (W B ).
It is a figure explaining the 2nd embodiment applied to tabular strip (1) for providing A). 5 is different from FIG. 4 in that a brazing material foil (6) is provided instead of the binder coating (5). in this case,
It goes without saying that the step of applying the brazing material in the subsequent step is omitted.
【００２２】図６は、所定幅（ＷN ）の非ろう接合部
（ＮＢＡ）ならびに所定幅（ＷB ）のろう接合部（Ｂ
Ａ）を設けるための平板状帯材（１）に適用される第三
実施態様を説明する図である。図６の態様は、平板状帯
材（１）に、その端部から非ろう接合部（ＮＢＡ）を形
成するための幅（ＷN ）の部分に、後工程における粉末
ろう材の水分散液浴での浸漬処理時に、ろう材が付着し
ないように揆水性被膜部（７）を設けている点である。
前記ろう材の付着防止剤としては、セラミック塗料など
を使用すればよい。FIG. 6 shows a non-brazing joint (NBA) having a predetermined width (W N ) and a brazing joint ( B ) having a predetermined width (W B ).
It is a figure explaining the 3rd embodiment applied to flat strip material (1) for providing A). The embodiment of FIG. 6 shows an aqueous dispersion of a powdered brazing material in a post-process on a flat strip material (1) having a width (W N ) for forming a non-brazing joint (NBA) from its end. The point is that the water repellent coating (7) is provided so that the brazing material does not adhere during the bath immersion treatment.
Ceramic paint or the like may be used as the anti-adhesion agent for the brazing material.
【００２３】[0023]
【発明の効果】本発明の薄肉金属板製の平板状帯材と波
板状帯材を相互に当接するように重積して製作され、か
つ該両帯材の所望の当接部がろう接合されてなるハニカ
ム体は、少なくともその一方の端面部及びその近傍部位
に所望幅の非ろう接合部を有するものである。本発明の
前記非ろう接合部において、ろう材成分の熱拡散と該成
分と帯材成分との金属間化合物の生成が阻止されるた
め、該部位の帯材の脆化が防止されると共に、ハニカム
体の使用中に該端面部（非ろう接合部）に集中、集積す
る熱変形力を効果的に吸収、緩和することができる。従
って、本発明により耐久性の優れたハニカム体が提供さ
れる。The flat and corrugated strips made of a thin metal sheet according to the present invention are manufactured by stacking them so as to be in contact with each other, and the desired contact portions of the two strips are soldered. The joined honeycomb body has a non-brazing joint having a desired width at least at one end surface and a portion in the vicinity thereof. In the non-brazing joint of the present invention, since thermal diffusion of the brazing filler metal component and generation of an intermetallic compound between the component and the band component are prevented, embrittlement of the band material at the site is prevented, During use of the honeycomb body, it is possible to effectively absorb and alleviate the thermal deformation force concentrated and accumulated on the end face portion (non-brazing joint portion). Therefore, the present invention provides a honeycomb body having excellent durability.
【図１】 本発明のハニカム体（Ｈ）を使用したメタル
担体（ＭＳ）の一部を透視した斜視図である。FIG. 1 is a perspective view in which a part of a metal carrier (MS) using a honeycomb body (H) of the present invention is seen through.
【図２】 図１のメタル担体（ＭＳ）の一部を省略した
断面図である。FIG. 2 is a cross-sectional view of the metal carrier (MS) of FIG. 1 with a part thereof omitted.
【図３】 図１のハニカム体（Ｈ）の一部拡大斜視図で
ある。FIG. 3 is a partially enlarged perspective view of the honeycomb body (H) of FIG.
【図４】 第一実施態様の平板状帯材（１）の構成を説
明するための図である。FIG. 4 is a view for explaining a configuration of a flat band material (1) of the first embodiment.
【図５】 第二実施態様の平板状帯材（１）の構成を説
明するための図である。FIG. 5 is a view for explaining a configuration of a flat band material (1) of a second embodiment.
【図６】 第三実施態様の平板状帯材（１）の構成を説
明するための図である。FIG. 6 is a view for explaining a configuration of a flat band material (1) according to a third embodiment.
ＭＳ……メタル担体 Ｈ………ハニカム体 １………平板状帯材 ２………波板状帯材 ３………網目状通気孔路（セル） ４………ケーシング ５………バインダー被膜部 ６………ろう材箔部 ７………撥水性被膜部 MS: Metal carrier H: Honeycomb body 1: Flat band material 2: Corrugated band material 3: Mesh-shaped ventilation channel (cell) 4: Casing 5: Binder Coating part 6: brazing material foil part 7: water-repellent coating part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 21/00 - 37/36 B01D 53/86 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) B01J 21/00-37/36 B01D 53/86
Claims (4)
を相互に当接するように重積して製作され、かつ前記平
板状帯材と波板状帯材の所望の当接部がろう接合されて
成る排気ガス浄化用触媒を担持するためのハニカム体に
おいて、前記ハニカム体が、少なくとも一方の端面部
に、端面から１ｍｍ以上、５ｍｍ以内の非ろう接合部を
有するもので構成されたものである、ことを特徴とする
ハニカム体。1. A flat metal strip made of a thin metal plate and a corrugated strip are stacked so as to be in contact with each other, and a desired contact between the flat strip and the corrugated strip is produced. In a honeycomb body for supporting an exhaust gas purifying catalyst in which a contact portion is brazed, the honeycomb body has a non-brazing joint portion of at least one end face portion of 1 mm or more and 5 mm or less from the end face. A honeycomb body , which is constituted.
一ピッチ幅を有するものである請求項１に記載のハニカ
ム体。2. The honeycomb body according to claim 1, wherein the width of the non-brazing joint has one pitch width of the wave of the corrugated strip.
接合部が、ハニカム体の端面から５０ｍｍ以内の部位に
配設されたものである請求項１に記載のハニカム体。3. A would have been disposed adjacent to the non-braze joints joint, from the end face of the honeycomb body to a site within 50mm
The honeycomb body according to claim 1 in which is disposed.
である請求項３に記載のハニカム体。4. The honeycomb body according to claim 3 , wherein the width of the brazing joint is within 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14127293A JP3274233B2 (en) | 1993-05-21 | 1993-05-21 | Honeycomb body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14127293A JP3274233B2 (en) | 1993-05-21 | 1993-05-21 | Honeycomb body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06327982A JPH06327982A (en) | 1994-11-29 |
| JP3274233B2 true JP3274233B2 (en) | 2002-04-15 |
Family
ID=15288037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14127293A Expired - Fee Related JP3274233B2 (en) | 1993-05-21 | 1993-05-21 | Honeycomb body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3274233B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4977326B2 (en) * | 2005-02-21 | 2012-07-18 | 本田技研工業株式会社 | Silencer |
| DE102005045492A1 (en) * | 2005-09-23 | 2007-03-29 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb body for exhaust gas treatment of internal combustion engines of truck or bus, comprises two opposite faces comprising a housing and channels forming metallic layer |
-
1993
- 1993-05-21 JP JP14127293A patent/JP3274233B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06327982A (en) | 1994-11-29 |
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