JPH0929105A - Metallic carrier for purifying exhaust gas - Google Patents
Metallic carrier for purifying exhaust gasInfo
- Publication number
- JPH0929105A JPH0929105A JP7180421A JP18042195A JPH0929105A JP H0929105 A JPH0929105 A JP H0929105A JP 7180421 A JP7180421 A JP 7180421A JP 18042195 A JP18042195 A JP 18042195A JP H0929105 A JPH0929105 A JP H0929105A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- flat plate
- outer cylinder
- core body
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 102
- 239000002184 metal Substances 0.000 claims description 102
- 238000005219 brazing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract description 2
- 239000003232 water-soluble binding agent Substances 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 230000004907 flux Effects 0.000 description 10
- 238000005304 joining Methods 0.000 description 10
- 239000011888 foil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000025599 Heat Stress disease Diseases 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車、自動二輪車及び
産業用機器の排ガス浄化用触媒を担持するための排ガス
浄化用メタル担体及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas purifying metal carrier for carrying an exhaust gas purifying catalyst for automobiles, motorcycles and industrial equipment, and a method for producing the same.
【０００２】[0002]
【従来の技術】従来の排ガス浄化用メタル担体は、ハニ
カム構造をしたハニカムコア体を金属外筒内に組み込み
一体とし、ハニカムコア体に自動車等の排ガスを浄化す
る触媒を担持させている。そして、この排ガス浄化用メ
タル担体の製造方法としては、ハニカムコア体の素材で
ある耐熱性の優れたフェライト系ステンレス鋼箔の平板
と、この箔を波状に加工した波板とを重ね合わせ巻回し
た後、あるいは、巻回しながらＮｉろう材を供給してハ
ニカム構造のメタルハニカムコア体を形成する。その
後、このメタルハニカムコア体外周にアモルファス箔ろ
うを巻き付け金属外筒に組み込み、バッチ式の真空熱処
理炉でろう付けを行う方法が今日、最も多く用いられて
いる。しかし、この方法の場合、使用する粉末あるいは
箔ろうは高価であり、また、加熱処理がバッチ式のため
生産性が悪いという問題がありコスト高となってしまう
欠点があった。2. Description of the Related Art In a conventional exhaust gas purifying metal carrier, a honeycomb core body having a honeycomb structure is incorporated and integrated into a metal outer cylinder, and a catalyst for purifying exhaust gas from automobiles is carried on the honeycomb core body. Then, as a method for producing the exhaust gas purifying metal carrier, a flat plate of a ferritic stainless steel foil having excellent heat resistance which is a material of the honeycomb core body, and a corrugated plate obtained by processing the foil in a wavy shape are superposed and wound. After that, or while being wound, a Ni brazing material is supplied to form a metal honeycomb core body having a honeycomb structure. After that, a method in which an amorphous foil brazing material is wound around the outer periphery of the metal honeycomb core body, incorporated into a metal outer cylinder, and then brazing is performed in a batch type vacuum heat treatment furnace is most often used today. However, in the case of this method, the powder or foil wax to be used is expensive, and since the heat treatment is a batch type, there is a problem that productivity is poor and the cost becomes high.
【０００３】ろう材を使用せず接合するか、あるいは使
用しても極力少ない方法として、特開平５−１３１１４
７号公報に記載された方法がある。この公報に記載され
たメタル担体の製造方法は、拡散接合を促進する超微粉
体を含有する液状塗布材を、波板の拡散接合すべき個所
に塗布し平板と巻回した後、外筒に組み込みこれを非酸
化性雰囲気で加熱処理し、ハニカムコア体、ハニカムコ
ア体／金属外筒間を拡散接合する方法である。この方法
において非酸化性雰囲気としてＡｒ，Ｎ2を用いた場
合、平板及び波板表面に拡散接合を促進する超微粉体を
含有する液状塗布材を塗布しても、平板及び波板表面に
存在する酸化皮膜のため拡散が十分に行われず、強固な
接合強度を得ることはできない。As a method of joining without using a brazing filler metal, or using the brazing filler metal as little as possible, Japanese Patent Laid-Open No. 5-13114
There is a method described in Japanese Patent Publication No. The method of manufacturing a metal carrier described in this publication is such that a liquid coating material containing ultrafine powder that promotes diffusion bonding is applied to a portion of a corrugated plate to be diffusion bonded and wound around a flat plate, and then an outer cylinder. It is a method in which the honeycomb core body and the honeycomb core body / metal outer cylinder are diffusion-bonded by incorporating them into a heat treatment in a non-oxidizing atmosphere. When Ar and N 2 are used as the non-oxidizing atmosphere in this method, even if a liquid coating material containing ultrafine powder that promotes diffusion bonding is applied to the surfaces of the flat plate and the corrugated plate, Due to the existing oxide film, the diffusion is not sufficiently performed, and a strong joint strength cannot be obtained.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明者ら
は、上記の欠点を改良すべく種々検討した結果、平板に
凸状部を設け、かつ拡散接合材としてＡｌのフッ化物を
使用することによって耐酸化性及び十分な接合強度を持
つメタル担体を安価に製造しうることを見出し、本発明
を完成したもので、本発明の目的は、耐酸化性を有し、
十分な強度を持つ新規なメタル担体を提供するものであ
る。Therefore, as a result of various investigations to improve the above-mentioned drawbacks, the present inventors have found that a flat plate is provided with a convex portion and Al fluoride is used as a diffusion bonding material. It has been found that a metal carrier having oxidation resistance and sufficient bonding strength can be manufactured at low cost by the present invention, and has completed the present invention. The object of the present invention is to have oxidation resistance.
The present invention provides a novel metal carrier having sufficient strength.
【０００５】[0005]
【課題を解決するための手段】本発明の要旨は、平板の
予め設定した位置に凸状部を設けた平板の表裏に、Ａ１
のフッ化物を塗布して波板と重ね巻回して波板が平板の
凸状部と接するようにし、かつ外周部に平板の凸状部を
有するように形成した金属ハニカム体が、該金属ハニカ
ム体の外径より僅かに小さい径を有する金属外筒内に圧
入されてなり、高温度の熱処理によってろう材なしに平
板の凸状部と波板とが接合され、かつ、金属ハニカム体
外周部の凸状部と金属外筒の内面とが接合されているこ
とを特徴とする排ガス浄化用メタル担体であり、また、
金属外筒の内周面に円周方向に沿って複数個の溝を有す
ることが好ましい。Means for Solving the Problems The gist of the present invention is to provide A1 on the front and back of a flat plate provided with a convex portion at a preset position of the flat plate.
The metal honeycomb body formed by applying the fluoride of the above and overlappingly winding it with the corrugated plate so that the corrugated plate is in contact with the convex portion of the flat plate and having the convex portion of the flat plate on the outer peripheral portion is the metal honeycomb. It is press-fitted into a metal outer cylinder having a diameter slightly smaller than the outer diameter of the body, the convex portion of the flat plate and the corrugated plate are joined together without the brazing filler metal by heat treatment at high temperature, and the outer peripheral portion of the metal honeycomb body is formed. Is a metal carrier for purifying exhaust gas, characterized in that the convex part of the inner surface of the metal outer cylinder is joined,
It is preferable to have a plurality of grooves along the circumferential direction on the inner peripheral surface of the metal outer cylinder.
【０００６】即ち、本願発明においてはメタルハニカム
コア体の平板と波板との接合及びメタルハニカムコア体
と金属外筒との接合は、平板に設けた凸状部においてな
されているので、メタルハニカムコア体の軸方向及び金
属外筒の円周方向に間歇的に接合されているため熱歪み
の緩和が行われ、その結果、耐久性に富み、また、ろう
材を使用しないので、ろう材成分の母材への拡散による
耐酸化性の劣化を防止でき、しかも高価なろう材を使用
しないので製造コストの低減が図られる。That is, in the present invention, since the flat plate of the metal honeycomb core body and the corrugated plate and the metal honeycomb core body and the metal outer cylinder are joined at the convex portion provided on the flat plate, the metal honeycomb Since it is intermittently joined in the axial direction of the core body and in the circumferential direction of the metal outer cylinder, thermal strain is mitigated, and as a result, it has excellent durability, and since no brazing material is used, the brazing material component It is possible to prevent the deterioration of the oxidation resistance due to the diffusion into the base material, and to reduce the manufacturing cost because no expensive brazing material is used.
【０００７】次に本発明について詳細に説明する。本発
明において使用する平板には、平板の全幅にわたって、
４〜５個所程度平板の幅方向に平行に凸状部を設け、こ
の凸状部が波板の頂部と接合する。従って、本発明では
従来のように平板と波板とがハニカムコア体の軸方向全
面にわたって接合するのではなく、平板の凸状部におい
てのみ波板と接合している。従って、両者の接合は分割
接合となり、熱歪みの緩和に有効であり、その結果、熱
サイクルに対して耐久性を有する。また、平板と波板と
を重ねて巻回してハニカムコア体のコア部を形成する
際、最外周に平板がくるように巻回する。従って、メタ
ルハニカムコア体の外周には凸状部が存在する。他方、
金属外筒は、前記メタルハニカムコア体の外径より僅か
に小さい内径を有し、又その円周方向には複数個の溝を
設けることが好ましい。Next, the present invention will be described in detail. The flat plate used in the present invention, over the entire width of the flat plate,
About 4 to 5 places are provided with convex portions parallel to the width direction of the flat plate, and the convex portions are joined to the top of the corrugated plate. Therefore, in the present invention, the flat plate and the corrugated plate are not bonded to each other over the entire surface in the axial direction of the honeycomb core body as in the conventional case, but are bonded to the corrugated plate only at the convex portion of the flat plate. Therefore, the joining of the two becomes a split joining, which is effective in alleviating the thermal strain and, as a result, has durability against the thermal cycle. Moreover, when the flat plate and the corrugated plate are overlapped and wound to form the core portion of the honeycomb core body, the flat plate and the corrugated plate are wound so that the flat plate comes to the outermost periphery. Therefore, the convex portion exists on the outer periphery of the metal honeycomb core body. On the other hand,
It is preferable that the metal outer cylinder has an inner diameter slightly smaller than the outer diameter of the metal honeycomb core body, and that a plurality of grooves are provided in the circumferential direction.
【０００８】このようにして得られたメタルハニカムコ
ア体を前記金属外筒内に圧入し、メタルハニカムコア体
と金属外筒の内面とを密着させることによりメタル担体
とする。メタルハニカムコア体を前記金属外筒内に圧入
する際は、金属外筒の内径より僅かに大きい外径を有す
るメタルハニカムコア体を圧縮して、その外径を縮径し
て金属外筒内に挿入し、しかる後、加熱処理することに
よってメタルハニカムコア体が復元し両者は密着する。
或いは、メタルハニカムコア体を構成する金属箔の熱膨
張率を金属外筒を構成する金属の熱膨張率より大とし、
熱処理時の熱膨張差を用いて密着させたりする。例え
ば、コア部を構成する金属箔として２０Ｃｒ−５Ａｌを
使用し、金属外筒を構成する金属としてフェライト系ス
テンレス鋼を使用した場合、前者の熱膨張率は約１５×
１０~6ｌ／℃であり、後者は約１１×１０~6ｌ／℃であ
るので、加熱時外筒部とコア部とは極めて良好に密着す
る。このように、メタルハニカムコア体と金属外筒とを
密着させることによってメタル担体の接合強度を向上さ
せる。The metal honeycomb core body thus obtained is press-fitted into the metal outer cylinder, and the metal honeycomb core body and the inner surface of the metal outer cylinder are brought into close contact with each other to form a metal carrier. When press-fitting the metal honeycomb core body into the metal outer cylinder, the metal honeycomb core body having an outer diameter slightly larger than the inner diameter of the metal outer cylinder is compressed, and the outer diameter is reduced so that the metal outer cylinder After that, the metal honeycomb core body is restored by heating it, and both are adhered.
Alternatively, the coefficient of thermal expansion of the metal foil forming the metal honeycomb core body is made larger than the coefficient of thermal expansion of the metal forming the metal outer cylinder,
They are brought into close contact with each other by using the difference in thermal expansion during heat treatment. For example, when 20Cr-5Al is used as the metal foil forming the core portion and ferritic stainless steel is used as the metal forming the metal outer cylinder, the former coefficient of thermal expansion is about 15 ×.
Since it is 10 to 6 l / ° C., and the latter is about 11 × 10 to 6 l / ° C., the outer cylinder part and the core part are extremely well adhered upon heating. In this way, the metal honeycomb core body and the metal outer cylinder are brought into close contact with each other to improve the bonding strength of the metal carrier.
【０００９】金属外筒とメタルハニカムコア体との接合
に際しては、外筒部の内面に予めフラックスを塗布す
る。従来の方法ではメタルハニカムコア体を圧入する
際、外筒部の内面に塗布したフラックスは圧入させるメ
タルハニカムコア体によって押し出されるため、外筒と
ハニカムコア体間には十分にフラックスが供給されな
い。本発明ではメタルハニカムコア体の最外周部には平
板の凸状部が存在するので平らな部分のフラックスは外
筒部の内面に残り、この残ったフラックスが熱処理時に
溶融して毛細管現象によりメタルハニカムコア体と金属
外筒の接着部に入り込み接合される。また、このメタル
ハニカムコア体と金属外筒部との接合も分割接合のため
好ましい。When joining the metal outer cylinder and the metal honeycomb core body, the flux is applied to the inner surface of the outer cylinder in advance. In the conventional method, when the metal honeycomb core body is press-fitted, the flux applied to the inner surface of the outer cylinder is pushed out by the metal honeycomb core body to be press-fitted, so that the flux is not sufficiently supplied between the outer cylinder and the honeycomb core body. In the present invention, since the convex portion of the flat plate exists in the outermost peripheral portion of the metal honeycomb core body, the flux of the flat portion remains on the inner surface of the outer tubular portion, and the remaining flux is melted during the heat treatment to cause the metal phenomenon by the capillary phenomenon. The honeycomb core body and the metallic outer cylinder are inserted into and bonded to each other. Further, the joining of the metal honeycomb core body and the metal outer tubular portion is also preferable because of the split joining.
【００１０】フェライト系ステンレス鋼表面には強固な
酸化皮膜が形成されているため、ハニカムコア体及びハ
ニカムコア体と金属外筒の接合を行う場合、この酸化物
を除去しなければ良好な接合を得ることができない。本
発明で使用するフラックス、即ち、Ａ１のフッ化物は、
フェライト系ステンレス鋼表面に形成されるＡ１の酸化
物、或いはＣｒの酸化物に有効に作用し、高温で酸化物
を除去する。また、加熱時、前記フラックスは液状化し
接合部を覆うため、炉内の残存酸素による接合部の再酸
化を防止することができるため、良好な接合部を得るこ
とができる。Since a strong oxide film is formed on the surface of the ferritic stainless steel, when the honeycomb core body and the honeycomb core body and the metal outer cylinder are joined, good joining is required unless the oxide is removed. Can't get The flux used in the present invention, that is, the fluoride of A1, is
It effectively acts on the oxide of A1 or the oxide of Cr formed on the surface of ferritic stainless steel, and removes the oxide at high temperature. In addition, since the flux is liquefied and covers the joint portion during heating, re-oxidation of the joint portion due to residual oxygen in the furnace can be prevented, so that a good joint portion can be obtained.
【００１１】金属外筒内にメタルハニカムコア体を圧入
して組み込んだメタル担体に熱処理を施して両者を接合
する。熱処理に使用する装置としてはカ−ボン炉を使用
することが好ましい。カ−ボン炉は、炉内の残存酸素と
カ−ボンが反応して一酸化炭素ＣＯとなり、酸素濃度を
非常に低下させる作用を有する。その結果、再酸化させ
ることが少なく、また、酸素量を低く抑えることができ
るので残存酸素によるフラックスの消費量が少なくなる
ため、フラックス塗布量を少なくできる。熱処理に際し
ては連続炉を使用することが好ましい。熱処理温度とし
ては使用するフラックスの種類によって異なるが、通常
１０００℃以上である。The metal carrier having the metal honeycomb core body press-fitted into the metal outer cylinder is heat-treated to bond the two together. A carbon furnace is preferably used as an apparatus used for the heat treatment. In the carbon furnace, the residual oxygen in the furnace reacts with the carbon to form carbon monoxide CO, which has the effect of significantly reducing the oxygen concentration. As a result, reoxidation is less likely to occur, and the amount of oxygen can be suppressed to a low level, so that the amount of flux consumed by residual oxygen is reduced, so the amount of flux applied can be reduced. It is preferable to use a continuous furnace for the heat treatment. The heat treatment temperature varies depending on the type of flux used, but is usually 1000 ° C. or higher.
【００１２】次に本発明に係るメタル担体を図をもって
示す。図２ａは本発明で使用する平板，図２ｂは本発明
で使用する波板のそれぞれの斜視図である。本発明では
平板１には全幅にわたり凸状部２を有する。波板３は通
常の頂部４と底部５を有する波形の金属箔である。この
平板１と波板３を重ね巻回してハニカム構造のメタルハ
ニカムコア体６を構成する（図５）。そして、前記メタ
ルハニカムコア体６が金属外筒７に組み込み、図４に示
すようにメタル担体９を構成する。メタル担体９の一部
断面斜視図を図１に示す。Next, the metal carrier according to the present invention is shown in the drawings. 2a is a perspective view of a flat plate used in the present invention, and FIG. 2b is a perspective view of a corrugated plate used in the present invention. In the present invention, the flat plate 1 has the convex portion 2 over the entire width. The corrugated sheet 3 is a corrugated metal foil having a usual top 4 and bottom 5. The flat plate 1 and the corrugated plate 3 are wound in an overlapping manner to form a metal honeycomb core body 6 having a honeycomb structure (FIG. 5). Then, the metal honeycomb core body 6 is incorporated into the metal outer cylinder 7 to form a metal carrier 9 as shown in FIG. A partial cross-sectional perspective view of the metal carrier 9 is shown in FIG.
【００１３】次に実施例を以って具体的に本発明を説明
する。 実施例１厚さ５０μｍの高Ａ１含有フェライト系ステン
レス鋼板よりなる平板（熱膨張率：１５×１０~6 １／
℃）に巾３ｍｍ、高さ０．２ｍｍの凸状部を、平板の端
から、凸状部の中心が６ｍｍ、１４ｍｍになる位置に設
ける。該平板の表裏にＡ１のフッ化物（Ｋ3ＡｌＦ6）と
水溶性のバインダ−を混合したスラリ−を塗布し、厚さ
５０μｍのフェライト系ステンレス鋼板を波状に曲折し
て形成された波板と重ね巻回し、外周部に凸状部を有す
る外径６１ｍｍのハニカム体を作製した。次に、内面に
複数個の溝を有する厚さ１．５ｍｍ、内径６０ｍｍのフ
ェライト系ステンレス鋼板製（熱膨張率：１１×１０~6
１／℃）の金属外筒に、前記ハニカムコア体の外径を
１．２〜１．５ｍｍ程度縮径し、圧入した。その後、加
熱室がカーボンでできた連続雰囲気炉を用いＡｒ雰囲気
中で温度１２５０℃で１００ｍｉｎ（加熱炉通過時間）
熱処理を行いメタル担体を作製した。この方法で作製し
たメタル担体の状態を図３に示す。図３において１０は
波板の表面の接合部、１１は波板の裏面の接合部を表
し、１２はハニカムコア体と金属外筒の接合部を示す。
外筒のみを支持したメタル担体を、室温で直径２０ｍ
ｍ、５０ｍｍのポンチでハニカムコア体を押し抜き、そ
の時の強度で評価する押し抜き試験で、本発明のメタル
担体と同じ構造のろう付け法で作製したメタル担体の押
し抜き強度を比較した結果を表１に示す。表１から明ら
かなように本発明メタル担体の、押し抜き強度はろう付
け法で作製したメタル担体より高い値を示した。本発明
メタル担体に触媒を担持し、熱サイクル試験（１０００
℃×３０ｍｉｎ→空冷×１０ｍｉｎ）を行った結果、３
００時間試験後、セル変形及び箔の破断は観察されなか
った。また、振動に対する耐久性を試験するため、振動
周波数２０〜５００Ｈｚ、加速度３０Ｇで２０時間試験
した結果、本発明のメタル担体にはハニカムコア体のず
れ、接合部の破断等の不具合は認められなかった。Next, the present invention will be specifically described with reference to examples. Example 1 A flat plate made of a ferritic stainless steel sheet having a high A1 content and a thickness of 50 μm (coefficient of thermal expansion: 15 × 10 to 61 /
(° C), a convex portion having a width of 3 mm and a height of 0.2 mm is provided at a position where the center of the convex portion is 6 mm or 14 mm from the end of the flat plate. A corrugated plate formed by applying a slurry obtained by mixing a fluoride of A1 (K 3 AlF 6 ) and a water-soluble binder on the front and back of the flat plate and bending a ferritic stainless steel plate having a thickness of 50 μm into a wavy shape. The honeycomb body was wound in layers and formed into a honeycomb body having an outer diameter of 61 mm and having a convex portion on the outer peripheral portion. Next, a ferritic stainless steel plate having a plurality of grooves on the inner surface and a thickness of 1.5 mm and an inner diameter of 60 mm (coefficient of thermal expansion: 11 × 10 to 6
The outer diameter of the honeycomb core body was reduced by about 1.2 to 1.5 mm and press-fitted into a metal outer cylinder of 1 / ° C.). Then, using a continuous atmosphere furnace whose heating chamber is made of carbon, in an Ar atmosphere at a temperature of 1250 ° C. for 100 minutes (heating furnace passage time)
It heat-processed and produced the metal carrier. The state of the metal carrier prepared by this method is shown in FIG. In FIG. 3, reference numeral 10 denotes a joint portion on the front surface of the corrugated sheet, 11 denotes a joint portion on the rear surface of the corrugated sheet, and 12 denotes a joint portion between the honeycomb core body and the metal outer cylinder.
A metal carrier that supports only the outer cylinder has a diameter of 20 m at room temperature.
In a punching test in which a honeycomb core body is punched out with a punch of m and 50 mm, and the strength at that time is evaluated, the result of comparing the punching strength of a metal carrier produced by the brazing method of the same structure as the metal carrier of the present invention is shown. It shows in Table 1. As is clear from Table 1, the punching strength of the metal carrier of the present invention was higher than that of the metal carrier produced by the brazing method. A catalyst was loaded on the metal carrier of the present invention, and a thermal cycle test (1000
As a result of performing (° C. × 30 min → air cooling × 10 min), 3
After the 00 hour test, cell deformation and foil breakage were not observed. Further, in order to test the durability against vibration, as a result of performing a test for 20 hours at a vibration frequency of 20 to 500 Hz and an acceleration of 30 G, no defects such as displacement of the honeycomb core body and breakage of the joint were found in the metal carrier of the present invention. It was
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】以上述べたように、本発明においては、
ろう材を使用することなくＡｌのフッ化物を使用したの
で、ろう材を使用した場合のようなろう材の母材への拡
散に基づく酸化劣化がないので耐酸化性に優れ、また、
平板と波板との接合及びメタルハニカムコア体と金属外
筒との接合は分割接合のため熱歪みの緩和がなされ、そ
の結果、耐熱疲労性に優れたメタル担体である。そし
て、本発明の製造方法においては高価なろう材を使用し
ないので、安価に製造することができる。As described above, in the present invention,
Since the fluoride of Al is used without using the brazing material, there is no oxidative deterioration due to the diffusion of the brazing material into the base material as in the case of using the brazing material, so that it has excellent oxidation resistance.
The joining of the flat plate and the corrugated sheet and the joining of the metal honeycomb core body and the metal outer cylinder are split joining, so that thermal strain is relaxed, and as a result, the metal carrier has excellent heat fatigue resistance. Since the brazing material which is expensive is not used in the manufacturing method of the present invention, it can be manufactured at low cost.
【図１】本発明にかかるメタル担体の一部断面斜視図で
ある。FIG. 1 is a partial cross-sectional perspective view of a metal carrier according to the present invention.
【図２】本発明で使用する金属箔の斜視図で、ａは平
板、ｂは波板である。FIG. 2 is a perspective view of a metal foil used in the present invention, in which a is a flat plate and b is a corrugated plate.
【図３】本発明にかかる実施例１のメタル担体の一部断
面斜視図である。FIG. 3 is a partial cross-sectional perspective view of the metal carrier according to the first embodiment of the present invention.
【図４】本発明にかかるメタル担体の斜視図である。FIG. 4 is a perspective view of a metal carrier according to the present invention.
【図５】本発明にかかるメタルハニカムコア体の斜視図
である。FIG. 5 is a perspective view of a metal honeycomb core body according to the present invention.
１ 平板 ２ 平板の凸状部 ３ 平板の波板 ４ 波板の頂部 ５ 波板の底部 ６ メタル
ハニカムコア体 ７ 金属外筒 ８ 金属外筒の溝 ９ メタル
担体 １０ 波板の表面の接合部 １１ 波板の裏面の接
合部 １２ 金属外筒とメタルハニカムコア体の接合部DESCRIPTION OF SYMBOLS 1 flat plate 2 convex part of flat plate 3 corrugated plate of flat plate 4 top part of corrugated plate 5 bottom part of corrugated plate 6 metal honeycomb core body 7 metal outer cylinder 8 groove of metal outer cylinder 9 metal carrier 10 joint part of surface of corrugated plate 11 Bonding part on back surface of corrugated plate 12 Bonding part between metal outer cylinder and metal honeycomb core body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青木 幸夫 神奈川県川崎市川崎区小島町４−２ 日本 冶金工業株式会社研究開発本部商品開発部 内 (72)発明者 高橋 進 神奈川県横浜市保土ケ谷区藤塚236−50 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Aoki 4-2 Kojima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Nippon Metallurgical Industry Co., Ltd. Product Development Department, Research & Development Division (72) Susumu Takahashi Hodogaya-ku, Yokohama-shi, Kanagawa Fujitsuka 236-50
Claims (2)
た平板の表裏に、Ａ１のフッ化物を塗布して波板と重ね
巻回して波板が平板の凸状部と接するようにし、かつ外
周部に平板の凸状部を有するように形成した金属ハニカ
ム体が、該金属ハニカム体の外径より僅かに小さい径を
有する金属外筒内に圧入されてなり、高温度の熱処理に
よってろう材なしに平板の凸状部と波板とが接合され、
かつ、金属ハニカム体外周部の凸状部と金属外筒の内面
とが接合されていることを特徴とする排ガス浄化用メタ
ル担体。1. A flat plate provided with a convex portion at a preset position on a flat plate is coated with a fluoride of A1 and wound over the corrugated plate so that the corrugated plate is in contact with the convex part of the flat plate. , And the metal honeycomb body formed to have a flat convex portion on the outer peripheral portion is press-fitted into a metal outer cylinder having a diameter slightly smaller than the outer diameter of the metal honeycomb body, and is subjected to a high temperature heat treatment. The convex portion of the flat plate and the corrugated plate are joined without the brazing material,
An exhaust gas purifying metal carrier, wherein the convex portion of the outer peripheral portion of the metal honeycomb body and the inner surface of the metal outer cylinder are joined together.
数個の溝を有することを特徴とする請求項１記載の排ガ
ス浄化用メタル担体。2. The exhaust gas purifying metal carrier according to claim 1, wherein the metal outer cylinder has a plurality of grooves along the circumferential direction on the inner peripheral surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180421A JPH0929105A (en) | 1995-07-17 | 1995-07-17 | Metallic carrier for purifying exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180421A JPH0929105A (en) | 1995-07-17 | 1995-07-17 | Metallic carrier for purifying exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0929105A true JPH0929105A (en) | 1997-02-04 |
Family
ID=16082975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7180421A Pending JPH0929105A (en) | 1995-07-17 | 1995-07-17 | Metallic carrier for purifying exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0929105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012524659A (en) * | 2009-04-24 | 2012-10-18 | エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング | Sheet metal layer with diffusion preventing structure and metal honeycomb body including at least one such sheet metal layer |
-
1995
- 1995-07-17 JP JP7180421A patent/JPH0929105A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012524659A (en) * | 2009-04-24 | 2012-10-18 | エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング | Sheet metal layer with diffusion preventing structure and metal honeycomb body including at least one such sheet metal layer |
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