JPH07328451A - Metallic carrier excellent in thermal fatigue resistance - Google Patents
Metallic carrier excellent in thermal fatigue resistanceInfo
- Publication number
- JPH07328451A JPH07328451A JP6121109A JP12110994A JPH07328451A JP H07328451 A JPH07328451 A JP H07328451A JP 6121109 A JP6121109 A JP 6121109A JP 12110994 A JP12110994 A JP 12110994A JP H07328451 A JPH07328451 A JP H07328451A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- core body
- honeycomb core
- metal honeycomb
- outer cylinder
- 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.)
- Granted
Links
- 238000000746 purification Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 144
- 238000001816 cooling Methods 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 238000005219 brazing Methods 0.000 description 26
- 239000000463 material Substances 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 12
- 239000011888 foil Substances 0.000 description 10
- 230000035882 stress Effects 0.000 description 9
- 238000005304 joining Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000003232 water-soluble binding agent Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
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メタル
担体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 for carrying an exhaust gas purifying catalyst for automobiles, motorcycles and industrial equipment.
【０００２】[0002]
【従来の技術】自動車の排ガスを浄化する担体として、
耐熱性のステンレス鋼からなるハニカム体のメタル担体
が知られている。これらのメタル担体は排ガスによる冷
熱サイクルを受けると共に、メタル担体の温度勾配によ
る熱応力が作用する。また、メタル担体にはエンジンの
機械的振動及び排ガスの流れによる排ガス抵抗が作用す
るため、セルの変形或いはセルを構成している箔或いは
金属ハニカムコア体と金属外筒間の接合部の破断が生じ
ることがある。従って、これらを防止するため様々な構
造のメタル担体が考案されている。2. Description of the Related Art As a carrier for purifying automobile exhaust gas,
A honeycomb-shaped metal carrier made of heat-resistant stainless steel is known. These metal carriers are subjected to a cooling / heating cycle due to exhaust gas, and thermal stress due to the temperature gradient of the metal carriers acts. In addition, since mechanical vibration of the engine and exhaust gas resistance due to the flow of exhaust gas act on the metal carrier, deformation of cells or breakage of the foil forming the cells or the joint between the metal honeycomb core body and the metal outer cylinder is caused. May occur. Therefore, metal carriers having various structures have been devised to prevent these problems.
【０００３】例えば、特開平４−２９７５０号公報には
金属ハニカムコア体部と金属外筒をメタル担体軸方向に
１〜１５ｍｍのリング状の間隔を隔てて形成された複数
の帯びで接合するメタル担体が示されている。これは、
冷熱サイクル時にメタル担体軸方向に発生する応力を前
記リング状の間隔位置の非接合部分が変形することによ
り歪みを吸収し接合部と非接合部に作用する応力を分散
するためである。しかし、金属外筒と金属ハニカムコア
体間を複数の帯びで接合しても、金属ハニカムコア体の
接合状態により効率良く応力を分散することができない
場合がある。例えば、金属ハニカムコア体部と金属外筒
部の接合境界が金属ハニカムコア体内の接合境界と一致
した場合、熱サイクルにより応力がその箇所に集中して
しまい、その箇所から箔の破断が発生してしまう。For example, in Japanese Patent Laid-Open No. 4-29750, a metal is formed by joining a metal honeycomb core body and a metal outer cylinder with a plurality of bands formed at a ring-shaped interval of 1 to 15 mm in the axial direction of the metal carrier. The carrier is shown. this is,
This is because the stress generated in the axial direction of the metal carrier during the cooling / heating cycle is absorbed by the deformation of the non-bonded portions at the ring-shaped intervals, and the stress acting on the bonded portion and the non-bonded portion is dispersed. However, even if the metal outer tube and the metal honeycomb core body are joined with a plurality of bands, there are cases where the stress cannot be efficiently dispersed due to the joined state of the metal honeycomb core body. For example, if the joint boundary between the metal honeycomb core body and the outer metal cylinder coincides with the joint boundary inside the metal honeycomb core body, stress is concentrated at that location due to the thermal cycle, and the foil breaks from that location. Will end up.
【０００４】また、特開平４−１４８０１６号公報には
金属ハニカムコア体の軸方向長さの５％〜２０％の長さ
で平箔と波箔が軸方向に接合された領域を１か所有し、
かつ、前記金属ハニカムコア体の最外層から内側へ５層
以内で軸方向に接合された外層強化層を有し、さらに前
記外層強化領域の軸方向範囲内において金属外筒と金属
ハニカムコア体とが接合されているメタル担体が示され
ている。この場合は、金属外筒と金属ハニカムコア体を
軸方向の一箇所で接合し、金属外筒と金属ハニカムコア
体の軸方向の熱歪みを緩和している。しかし、金属外筒
と金属ハニカムコア体の接合が１か所だけであるためエ
ンジンの機械的振動或は自動車走行時の振動がこの接合
部に集中し、箔に破断が生じる可能性がある。In Japanese Patent Laid-Open No. 4-148016, there is one area where the flat foil and the corrugated foil are axially joined to each other with a length of 5% to 20% of the axial length of the metal honeycomb core body. Then
And an outer layer strengthening layer axially joined within 5 layers from the outermost layer to the inner side of the metal honeycomb core body, and further includes a metal outer cylinder and a metal honeycomb core body in the axial range of the outer layer strengthening region. There is shown a metal carrier to which are joined. In this case, the metal outer cylinder and the metal honeycomb core body are joined at one location in the axial direction to reduce the thermal strain in the axial direction of the metal outer cylinder and the metal honeycomb core body. However, since the metal outer tube and the metal honeycomb core body are bonded to each other only at one place, mechanical vibration of the engine or vibration during running of the vehicle is concentrated on this bonding portion, and the foil may be broken.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記のよう
な加熱、冷却の苛酷な熱サイクル及び激しい機械的振動
を受けた場合でも破損しないような耐久性に優れた構造
のメタル担体を提供するものである。DISCLOSURE OF THE INVENTION The present invention provides a metal carrier having a structure having excellent durability so as not to be damaged even when subjected to the severe heat cycle of heating and cooling and severe mechanical vibration as described above. To do.
【０００６】[0006]
【課題を解決するための手段】本発明の要旨は、平板と
波板を巻回して形成した金属ハニカムコア体と、該金属
ハニカムコア体の外周を囲む金属外筒とを接合してなる
排ガス浄化用メタル担体において、金属ハニカムコア体
最外周の平板と波板との接合部と、金属ハニカムコア体
最外周と金属外筒内壁との接合部を重複させないことを
特徴とする排ガス浄化用メタル担体である。そして、こ
れらの接合部は、金属ハニカムコア体の軸方向及び周方
向に間欠に設けることが好ましい。The gist of the present invention is an exhaust gas formed by joining a metal honeycomb core body formed by winding a flat plate and a corrugated plate, and a metal outer cylinder surrounding the outer periphery of the metal honeycomb core body. In the purification metal carrier, an exhaust gas purifying metal characterized in that the joint between the outermost flat plate and the corrugated plate of the metal honeycomb core body and the joint between the outermost periphery of the metal honeycomb core body and the inner wall of the metal outer cylinder do not overlap. It is a carrier. It is preferable that these joints are provided intermittently in the axial direction and the circumferential direction of the metal honeycomb core body.
【０００７】[0007]
【作用】以下に、本発明の作用について詳しく述べる。
メタル担体が実車に搭載された場合、冷熱サイクルを受
けると共に金属ハニカムコア中心部、金属ハニカムコア
体外周部及び金属外筒に温度分布が発生する。また、現
在の金属ハニカムコア体の多くはその平板及び波板に耐
酸化性に優れた２０Ｃｒ−５Ａｌ材が使用され、外筒に
はフェライト系のステンレス鋼が使用されているため、
金属ハニカムコア体と金属外筒の熱膨張の違いから金属
ハニカムコア体と金属外筒間には以下に述べるような応
力が作用する。The function of the present invention will be described in detail below.
When the metal carrier is mounted on an actual vehicle, the metal carrier is subjected to a cooling / heating cycle, and a temperature distribution occurs in the central portion of the metal honeycomb core, the outer peripheral portion of the metal honeycomb core body, and the metal outer cylinder. In addition, since many of the current metal honeycomb core bodies use 20Cr-5Al material having excellent oxidation resistance for the flat plate and corrugated plate, and the ferritic stainless steel is used for the outer cylinder,
Due to the difference in thermal expansion between the metal honeycomb core body and the metal outer cylinder, the following stress acts between the metal honeycomb core body and the metal outer cylinder.
【０００８】即ち、金属ハニカムコア体の温度は金属外
筒の温度より高く、且つ、金属ハニカムコア体の熱膨張
率は外筒の熱膨張率より大であるため、加熱時、金属ハ
ニカムコア体は、金属ハニカムコア体の半径方向に、熱
膨張により金属外筒に押しつけられ、金属ハニカムコア
体のセルに変形が生じる。この状態から金属ハニカムコ
ア体が冷却された場合、加熱時にセルが変形した分だけ
金属ハニカムコア体の径が減少するので、金属ハニカム
コア体の平板と波板との接合部と外筒内壁と金属ハニカ
ムコア体最外周部との接合部が重複している場合はこの
部分に引張応力が作用するため破断が生じる。この破断
を防止するためには、金属ハニカムコア体最外周の平板
と波板との接合部と金属ハニカムコア体最外周部と金属
外筒内壁の接合部を重複させず、一旦金属ハニカムコア
体と金属外筒の半径方向の縁を切ることにより防止する
ことができる。That is, since the temperature of the metal honeycomb core body is higher than the temperature of the metal outer cylinder and the coefficient of thermal expansion of the metal honeycomb core body is higher than that of the outer cylinder, the metal honeycomb core body is heated during heating. Is pressed against the metal outer cylinder in the radial direction of the metal honeycomb core body by thermal expansion, and the cells of the metal honeycomb core body are deformed. When the metal honeycomb core body is cooled from this state, the diameter of the metal honeycomb core body is reduced by the amount of deformation of the cells during heating, so that the joint between the flat plate and the corrugated plate of the metal honeycomb core body and the outer cylinder inner wall When the joint portion with the outermost peripheral portion of the metal honeycomb core body overlaps, tensile stress acts on this portion, causing fracture. In order to prevent this breakage, the joint between the outermost flat plate of the metal honeycomb core body and the corrugated plate and the joint between the outermost periphery of the metal honeycomb core body and the inner wall of the metal outer cylinder do not overlap, and once the metal honeycomb core body It can be prevented by cutting the radial edge of the metal outer cylinder.
【０００９】一方、軸方向には金属ハニカムコア体が外
筒に比べ温度が高いため金属ハニカムコア体は金属外筒
よりも金属ハニカムコア体軸方向に伸びようとする。従
って、金属ハニカムコア体と金属外筒とが２ケ所で接合
されている場合、その接合部には剪断応力が作用する。
また、接合間隔が長いほど伸びが大きくなるため接合部
にかかる剪断応力は大きくなり、接合部に破断が生じて
しまう。これを防止するためには金属ハニカムコア体軸
方向の中央部１か所で接合することにより、金属ハニカ
ムコア体軸方向の熱歪みを緩和することができる。しか
し、接合か所が１か所ではエンジンあるいは走行時の振
動が１か所に集中してしまうため接合部で破断してしま
う可能性がある。また、金属ハニカムコア体の周方向を
連続した帯びで接合した場合、周方向の熱歪みを緩和す
ることが出来ず、接合部と非接合部間に剪断応力が作用
し破断が生じてしまう。従って、接合強度の点及び軸方
向及び周方向の熱歪みを緩和するためには複数箇所でか
つ間欠に接合する事が好ましい。On the other hand, since the temperature of the metal honeycomb core body is higher in the axial direction than that of the outer cylinder, the metal honeycomb core body tends to extend in the axial direction of the metal honeycomb core body rather than the metal outer cylinder. Therefore, when the metal honeycomb core body and the metal outer cylinder are joined at two places, shear stress acts on the joined portion.
Further, the longer the joining interval is, the larger the elongation is, so that the shear stress applied to the joining portion is increased and the joining portion is broken. In order to prevent this, the thermal distortion in the axial direction of the metal honeycomb core body can be relaxed by bonding at one central portion in the axial direction of the metal honeycomb core body. However, if there is only one joining point, vibration during the engine or running is concentrated in one place, and there is a possibility of breaking at the joining point. Further, when the metal honeycomb core bodies are joined in a continuous band in the circumferential direction, the thermal strain in the circumferential direction cannot be relaxed, and shear stress acts between the joined portion and the non-joined portion to cause fracture. Therefore, in order to reduce the bonding strength and to reduce the thermal strain in the axial direction and the circumferential direction, it is preferable that the bonding is performed at a plurality of points and intermittently.
【００１０】本発明において、金属ハニカムコア体の平
板と波板との接合は、波板の頂部に粉末状のろう材とバ
インダ−を混合したスラリ−状の接合材を塗布し、平板
と共に巻回してハニカム状を構成する。金属ハニカムコ
ア体の最外周部と、金属外筒の内壁との接合に際して
は、金属ハニカムコア体を構成する波板に塗布したスラ
リ−状接合材が未だ流動性を維持し、金属外筒の内壁に
塗布したスラリ−状の接合材が流動性をもたなくなった
時に金属ハニカムコア体と金属外筒とを接合することが
望ましい。以下に、実施例をもって本発明を具体的に示
す。In the present invention, the flat plate of the metal honeycomb core body and the corrugated plate are joined together by applying a slurry-like joining material, which is a mixture of a powdery brazing material and a binder, to the top of the corrugated plate and winding it together with the flat plate. Turn to form a honeycomb. At the time of joining the outermost peripheral portion of the metal honeycomb core body and the inner wall of the metal outer cylinder, the slurry-like joining material applied to the corrugated plate constituting the metal honeycomb core body still maintains fluidity, It is desirable to join the metal honeycomb core body and the metal outer cylinder when the slurry-like joining material applied to the inner wall loses fluidity. The present invention will be specifically described below with reference to examples.
【００１１】[0011]
実施例１ 厚さ５０μｍのフェライト系ステンレス鋼製平板を波状
に曲折して形成された波板の表裏に、５０μｍアンダ−
の粉末状のろう材と水溶性のバインダ−を混合したスラ
リ−をハニカム体端面から、表面は各々１５ｍｍ、裏面
は２５ｍｍの位置に塗布し、平板と重ねて巻き込み金属
ハニカムコア体を作製した。次に厚さ１．５ｍｍの金属
外筒内面に粉末状ろう材とバインダ−を混合したスラリ
−を金属ハニカムコア体軸方向に、金属ハニカムコア体
端面及び端面から２０ｍｍの位置に、それぞれ１０ｍ
ｍ、かつ周方向に８分割した位置に８ｍｍ塗布し、さら
に金属ハニカムコア体中央部に巾１５ｍｍで、かつ周方
向に８分割した位置に８ｍｍ塗布し、金属ハニカムコア
体軸方向及び周方向にろう材を間欠に塗布し乾燥させた
後、前記金属ハニカムコア体を金属外筒に圧入した。そ
の後、ろう付け（１２００℃、２０分間加熱、１０~5Ｔ
ｏｒｒ）を行いメタル担体を作製した。このメタル担体
のろう付け構造を図１に示す。図１において３’は波板
の表面のろう材、３’’は波板の裏面のろう材、
３’’’は金属外筒と金属ハニカムコア体間のろう材を
表す。このメタル担体に触媒を担持し、冷熱サイクルと
振動試験を組み合わせた耐久試験（冷熱サイクル条件：
１０００℃×１２ｍｉｎ→強制空冷×３ｍｉｎ、排ガス
量１０ｍ3／ｍｉｎ、振動条件：周波数２０〜５００Ｈ
ｚ、加速度３０Ｇスイ−プ時間５ｍｉｎ（サイン））を
行った。本発明のメタル担体は３００時間試験後、波板
と平板で構成される金属ハニカムコア体のセルに僅かに
変形が生じたが箔の破断は観察されなかった。Example 1 A corrugated plate formed by bending a 50 μm thick ferritic stainless steel flat plate into a wavy shape has a 50 μm underlayer.
The slurry prepared by mixing the powdery brazing filler metal and the water-soluble binder was applied from the end face of the honeycomb body at a position of 15 mm on the front side and 25 mm on the back side, and was stacked on a flat plate to produce a metal honeycomb core body. Next, a slurry in which a powdery brazing material and a binder were mixed on the inner surface of the metal outer cylinder having a thickness of 1.5 mm was placed in the axial direction of the metal honeycomb core body at an end surface of the metal honeycomb core body and at a position of 20 mm from the end surface, respectively, for 10 m.
m, and 8 mm is applied at 8 divided positions in the circumferential direction. Further, a width of 15 mm is applied to the central portion of the metal honeycomb core body, and 8 mm is applied at 8 divided positions in the circumferential direction. After the brazing material was intermittently applied and dried, the metal honeycomb core body was pressed into the metal outer cylinder. After that, brazing (heating at 1200 ° C. for 20 minutes, 10 to 5 T
orr) was performed to produce a metal carrier. The brazing structure of this metal carrier is shown in FIG. In FIG. 1, 3'is a brazing material on the surface of the corrugated sheet, 3 '' is a brazing material on the back surface of the corrugated sheet,
3 ″ ′ represents a brazing material between the metal outer cylinder and the metal honeycomb core body. A catalyst was loaded on this metal carrier, and a durability test (cooling cycle condition:
1000 ° C x 12 min → forced air cooling x 3 min, exhaust gas amount 10 m 3 / min, vibration condition: frequency 20 to 500 H
z, acceleration 30 G sweep time 5 min (sign) was performed. After the 300 hour test, the metal carrier of the present invention was slightly deformed in the cells of the metal honeycomb core body composed of the corrugated plate and the flat plate, but the fracture of the foil was not observed.
【００１２】実施例２ 厚さ５０μｍのフェライト系ステンレス鋼製平板を波状
に曲折して形成された波板の表裏に、５０μｍアンダ−
の粉末状のろう材と水溶性のバインダ−を混合したスラ
リ−を金属ハニカムコア体端面から表面は２５ｍｍ、５
５ｍｍ、８５ｍｍ、裏面は１０ｍｍ、４０ｍｍ、７０ｍ
ｍの位置に塗布し、平板と重ねて巻き込み金属ハニカム
コア体を作製した。次に厚さ１．５ｍｍの金属外筒内面
に粉末状ろう材とバインダ−を混合したスラリ−を金属
ハニカムコア体軸方向に、金属ハニカムコア体端面及び
端面から１５ｍｍ、３０ｍｍ、４５ｍｍ、６０ｍｍ、７
５ｍｍ、９０ｍｍの位置に５ｍｍ、かつ周方向に８分割
した位置に８ｍｍ塗布し、金属ハニカムコア体軸方向及
び周方向にろう材を間欠に塗布し乾燥させた後、前記金
属ハニカムコア体を金属外筒に圧入した。その後、ろう
付け（１２００℃、２０分間加熱、１０~5Ｔｏｒｒ）を
行いメタル担体を作製した。このメタル担体のろう付け
構造を図２に示す。このメタル担体に触媒を担持し、冷
熱サイクルと振動試験を組み合わせた耐久試験（冷熱サ
イクル条件：１０００℃×１２ｍｉｎ→強制空冷×３ｍ
ｉｎ、排ガス量１０ｍ3／ｍｉｎ、振動条件：周波数２
０〜５００Ｈｚ、加速度３０Ｇスイ−プ時間５ｍｉｎ
（サイン））を行った。本発明のメタル担体は３００時
間試験後、波板と平板で構成される金属ハニカムコア体
のセルに僅かに変形が生じたが箔の破断は観察されなか
った。Example 2 A 50 μm underlayer is formed on the front and back of a corrugated plate formed by bending a 50 μm thick ferritic stainless steel flat plate into a wavy shape.
From the end surface of the metal honeycomb core body to the surface of 25 mm, a slurry prepared by mixing the powdery brazing filler metal and the water-soluble binder was prepared.
5mm, 85mm, back side 10mm, 40mm, 70m
It was applied at the position of m and was overlapped with a flat plate to produce a rolled metal honeycomb core body. Next, a slurry in which a powdery brazing material and a binder were mixed on the inner surface of the metal outer cylinder having a thickness of 1.5 mm was arranged in the axial direction of the metal honeycomb core body, and the end surface of the metal honeycomb core body and 15 mm, 30 mm, 45 mm, 60 mm from the end surface, 7
After applying 5 mm at 5 mm and 90 mm positions and 8 mm at 8 divided positions in the circumferential direction, intermittently applying a brazing material in the axial direction and the circumferential direction of the metal honeycomb core body, and drying it, the metal honeycomb core body is made of metal. Pressed into the outer cylinder. Then, brazing (heating at 1200 ° C. for 20 minutes, 10 to 5 Torr) was performed to produce a metal carrier. The brazing structure of this metal carrier is shown in FIG. A durability test in which a catalyst is loaded on this metal carrier and a thermal cycle and vibration test are combined (cooling cycle condition: 1000 ° C × 12 min → forced air cooling × 3 m
in, exhaust gas amount 10 m 3 / min, vibration condition: frequency 2
0-500Hz, acceleration 30G sweep time 5min
(Sign)). After the 300 hour test, the metal carrier of the present invention was slightly deformed in the cells of the metal honeycomb core body composed of the corrugated plate and the flat plate, but the fracture of the foil was not observed.
【００１３】比較例１ 厚さ５０μｍのフェライト系ステンレス鋼製平板を波状
に曲折して形成された波板と平板を重ねて巻き込み金属
ハニカムコア体を作製し、この金属ハニカムコア体の各
々の端面に厚さ２０μｍ巾１０ｍｍの箔ろうを巻き付
け、厚さ１．５ｍｍの金属外筒に圧入した。次に、金属
ハニカムコア端面から１０ｍｍ、ディッピングにより粉
末状のろう材とバインダ−を混合したスラリ−を塗布し
た。その後、ろう付け（１２００℃、２０分間加熱、１
０~5Ｔｏｒｒ）を行いメタル担体を作製した。このメタ
ル担体のろう付け構造を図３に示す。このメタル担体に
触媒を担持し、冷熱サイクルと振動試験を組み合わせた
耐久試験（冷熱サイクル条件：１０００℃×１２ｍｉｎ
→強制空冷×３ｍｉｎ、排ガス量１０ｍ3／ｍｉｎ、振
動条件：周波数２０〜５００Ｈｚ、加速度３０Ｇスイ−
プ時間５ｍｉｎ（サイン））を行った結果、試験１００
時間で金属ハニカムコア体最外周部の箔に、周の約６０
％に破断が発生した。また、同時にテレスコ−プが発生
した。Comparative Example 1 A corrugated plate formed by bending a ferritic stainless steel flat plate having a thickness of 50 μm into a wavy shape and the flat plate are overlapped to produce a metal honeycomb core body, and each end face of the metal honeycomb core body is manufactured. A foil brazing material having a thickness of 20 μm and a width of 10 mm was wound around and was press-fitted into a metal outer cylinder having a thickness of 1.5 mm. Then, 10 mm from the end face of the metal honeycomb core, a slurry in which a powdery brazing material and a binder were mixed by dipping was applied. After that, brazing (1200 ° C, heating for 20 minutes, 1
To prepare a metal carrier performs a 0 ~ 5 Torr). The brazing structure of this metal carrier is shown in FIG. A durability test in which a catalyst is supported on this metal carrier and a thermal cycle and a vibration test are combined (cooling cycle condition: 1000 ° C. × 12 min
→ Forced air cooling × 3 min, exhaust gas amount 10 m 3 / min, vibration condition: frequency 20 to 500 Hz, acceleration 30 G sweep
As a result of performing the test for 5 minutes (sign), the test 100
About 60 times the circumference of the outermost foil of the metal honeycomb core body
% Fracture occurred. At the same time, telescoping occurred.
【００１４】比較例２ 厚さ５０μｍのフェライト系ステンレス鋼製平板を波状
に曲折して形成された波板と平板を重ねて巻き込み金属
ハニカムコア体を作製した。この金属ハニカムコア体の
端面から１０ｍｍディッピングにより粉末状のろう材と
バインダ−を混合したスラリ−を塗布し、その後、ろう
付け（１２００℃、２０分間加熱、１０~5Ｔｏｒｒ）を
行い金属ハニカムコア体を作製した。次に、厚さ２０μ
ｍ、巾１５ｍｍの箔ろうをハニカム体中央部に巻きつ
け、厚さ１．５ｍｍの金属外筒に圧入し、再びろう付け
を行いメタル担体を作製した。このメタル担体のろう付
け構造を図４に示す。このメタル担体に触媒を担持し、
冷熱サイクルと振動試験を組み合わせた耐久試験（冷熱
サイクル条件：１０００℃×１２ｍｉｎ→強制空冷×３
ｍｉｎ、排ガス量１０ｍ3／ｍｉｎ、振動条件：周波数
２０〜５００Ｈｚ、加速度３０Ｇスイ−プ時間５ｍｉｎ
（サイン））を行った結果、試験８０時間で金属ハニカ
ムコア体と金属外筒間のろう付け部が破断したため、金
属ハニカムコア体が金属ハニカムコア体軸方向にズレが
発生した。Comparative Example 2 A metal honeycomb core body was produced by stacking a corrugated plate formed by bending a 50 μm thick ferritic stainless steel flat plate into a wavy shape and the flat plate. A slurry obtained by mixing a powdery brazing material and a binder is applied by 10 mm dipping from the end face of the metal honeycomb core body, and then brazing (heating at 1200 ° C. for 20 minutes, 10 to 5 Torr) is performed. The body was made. Next, thickness 20μ
A foil braze having a width of m and a width of 15 mm was wound around the center of the honeycomb body, press-fitted into a metal outer cylinder having a thickness of 1.5 mm, and brazed again to produce a metal carrier. The brazing structure of this metal carrier is shown in FIG. A catalyst is supported on this metal carrier,
Endurance test combining cooling and heating cycle and vibration test (cooling and heating cycle condition: 1000 ° C × 12 min → forced air cooling × 3
min, exhaust gas amount 10 m 3 / min, vibration condition: frequency 20 to 500 Hz, acceleration 30 G sweep time 5 min
As a result of performing (sign)), the brazed portion between the metal honeycomb core body and the metal outer cylinder was broken after 80 hours of the test, and thus the metal honeycomb core body was displaced in the axial direction of the metal honeycomb core body.
【００１５】[0015]
【発明の効果】本発明によるハニカム構造を採用するこ
とによって、耐久性に優れた自動車、自動二輪車及び産
業用機器の排ガス浄化用メタル担体を実現することがで
きた。By adopting the honeycomb structure according to the present invention, it is possible to realize a metal carrier for purifying exhaust gas for automobiles, motorcycles and industrial equipment, which is excellent in durability.
【図１】本発明の実施例１のメタル担体のろう付け状態
を示す断面斜視図FIG. 1 is a sectional perspective view showing a brazing state of a metal carrier according to a first embodiment of the present invention.
【図２】本発明の実施例２のメタル担体のろう付け状態
を示す断面斜視図FIG. 2 is a sectional perspective view showing a brazing state of a metal carrier according to a second embodiment of the present invention.
【図３】本発明の比較例１のメタル担体のろう付け状態
を示す断面斜視図FIG. 3 is a sectional perspective view showing a brazing state of a metal carrier of Comparative Example 1 of the present invention.
【図４】本発明の比較例２のメタル担体のろう付け状態
を示す断面斜視図FIG. 4 is a sectional perspective view showing a brazing state of a metal carrier of Comparative Example 2 of the present invention.
１ 波板 ２ 平板 ３ ろう材 ４ 金属外筒 1 Corrugated plate 2 Flat plate 3 Brazing material 4 Metal 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 Ｆ０１Ｎ 3/28 ＺＡＢ ３０１ Ｕ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location F01N 3/28 ZAB 301 U
Claims (2)
カムコア体と、該金属ハニカムコア体の外周を囲む金属
外筒とを接合してなる排ガス浄化用メタル担体におい
て、金属ハニカムコア体最外周の平板と波板との接合部
と、金属ハニカムコア体最外周と金属外筒内壁との接合
部を重複させないことを特徴とする排ガス浄化用メタル
担体。1. An exhaust gas purifying metal carrier comprising a metal honeycomb core body formed by winding a flat plate and a corrugated plate, and a metal outer cylinder surrounding the outer periphery of the metal honeycomb core body. A metal carrier for exhaust gas purification, characterized in that the joint between the outermost flat plate and the corrugated plate and the joint between the outermost periphery of the metal honeycomb core body and the inner wall of the metal outer cylinder do not overlap.
向及び周方向に間欠に接合した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 honeycomb core body and the metal outer cylinder are joined intermittently in the axial direction and the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12110994A JP3259081B2 (en) | 1994-06-02 | 1994-06-02 | Metal carrier with excellent thermal fatigue resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12110994A JP3259081B2 (en) | 1994-06-02 | 1994-06-02 | Metal carrier with excellent thermal fatigue resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07328451A true JPH07328451A (en) | 1995-12-19 |
| JP3259081B2 JP3259081B2 (en) | 2002-02-18 |
Family
ID=14803107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12110994A Expired - Fee Related JP3259081B2 (en) | 1994-06-02 | 1994-06-02 | Metal carrier with excellent thermal fatigue resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3259081B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08112536A (en) * | 1994-10-14 | 1996-05-07 | Usui Internatl Ind Co Ltd | Metallic carrier |
| JP2000042421A (en) * | 1998-07-27 | 2000-02-15 | Toyota Motor Corp | Manufacture of catalytic converter |
| US6673466B2 (en) * | 2000-04-14 | 2004-01-06 | Emitec Gesellschaft Fuer Emissionstechnologies Mbh | Housing with a passivation layer, catalyst carrier body with a housing and method for producing a catalyst carrier body with such a housing |
| JP2009508681A (en) * | 2005-09-23 | 2009-03-05 | 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 | Honeycomb body with hard brazing area on end face side |
| JP2019090348A (en) * | 2017-11-13 | 2019-06-13 | 本田技研工業株式会社 | Catalytic converter |
-
1994
- 1994-06-02 JP JP12110994A patent/JP3259081B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08112536A (en) * | 1994-10-14 | 1996-05-07 | Usui Internatl Ind Co Ltd | Metallic carrier |
| JP2000042421A (en) * | 1998-07-27 | 2000-02-15 | Toyota Motor Corp | Manufacture of catalytic converter |
| US6673466B2 (en) * | 2000-04-14 | 2004-01-06 | Emitec Gesellschaft Fuer Emissionstechnologies Mbh | Housing with a passivation layer, catalyst carrier body with a housing and method for producing a catalyst carrier body with such a housing |
| JP2009508681A (en) * | 2005-09-23 | 2009-03-05 | 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 | Honeycomb body with hard brazing area on end face side |
| JP2019090348A (en) * | 2017-11-13 | 2019-06-13 | 本田技研工業株式会社 | Catalytic converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3259081B2 (en) | 2002-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2599612B2 (en) | Metal supporting matrix for supporting exhaust gas purifying catalyst | |
| JPH07328451A (en) | Metallic carrier excellent in thermal fatigue resistance | |
| JP3400919B2 (en) | Method for producing catalyst carrier and exhaust system member | |
| JP2729041B2 (en) | Metal substrate for automotive exhaust gas purification catalyst with excellent thermal fatigue resistance | |
| JP2656617B2 (en) | Metal carrier for automobile exhaust gas purification catalyst | |
| JP3333288B2 (en) | Metal carrier | |
| JPH07100390A (en) | Metallic carrier for exhaust gas purification catalyst | |
| JPH0545298B1 (en) | ||
| JP3482249B2 (en) | Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding property | |
| JP4248194B2 (en) | Metal carrier for exhaust gas purification | |
| JP2504781B2 (en) | Metal honeycomb catalyst converter | |
| JP2895165B2 (en) | Exhaust gas purification catalyst carrier | |
| JP3347485B2 (en) | Durable diffusion bonded metal carrier | |
| JPH10337481A (en) | Metal carrier for catalyst converter and production thereof | |
| JP4024318B2 (en) | High durability metal carrier for exhaust gas purification | |
| JPH08229411A (en) | Metal carrier for exhaust gas purifying catalyst | |
| JP2521839Y2 (en) | Metal carrier | |
| JPH04150948A (en) | Metal carrier supporting exhaust gas purifying catalyst having intermittently bonded honeycomb part and preparation thereof | |
| JPH09170429A (en) | Metal carrier catalytic converter for controlling emission | |
| JPH07174019A (en) | Metallic catalyst converter | |
| JPH0724332A (en) | Metal honeycomb carrier and production thereof | |
| JP2898742B2 (en) | Manufacturing method of metal carrier by diffusion bonding | |
| JP3291777B2 (en) | Honeycomb structure | |
| JPH11303626A (en) | Metal catalyst device for exhaust emission control | |
| JP2585461Y2 (en) | Metal carrier for automobile exhaust gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071214 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081214 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081214 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091214 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101214 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |