JPH0323309A - Dull finish metallic foil, its manufacture and exhaust gas catalyst support of automobile - Google Patents
Dull finish metallic foil, its manufacture and exhaust gas catalyst support of automobileInfo
- Publication number
- JPH0323309A JPH0323309A JP1155057A JP15505789A JPH0323309A JP H0323309 A JPH0323309 A JP H0323309A JP 1155057 A JP1155057 A JP 1155057A JP 15505789 A JP15505789 A JP 15505789A JP H0323309 A JPH0323309 A JP H0323309A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- stainless steel
- metallic foil
- dull finish
- heat resisting
- 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
- 239000011888 foil Substances 0.000 title claims abstract description 41
- 239000003054 catalyst Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 230000003746 surface roughness Effects 0.000 claims abstract description 15
- 238000005097 cold rolling Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 37
- 238000004804 winding Methods 0.000 claims description 2
- 238000005219 brazing Methods 0.000 abstract description 18
- 239000010970 precious metal Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 21
- 239000007789 gas Substances 0.000 description 16
- 239000011230 binding agent Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/227—Surface roughening or texturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、一定の表面粗度を有するダル仕上金属箔から
なる自動車の排ガス触媒用金属箔及びその製造方法に関
するものである．
（従来の技術）
近年特に１９７０年頃から自動車排気ガスが公害源とし
て問題視されるようになり、現代自動車排ガス対策は、
エンジンの改良と触媒による排気ガスの浄化によって行
われている。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a metal foil for an automobile exhaust gas catalyst made of a dull-finished metal foil having a certain surface roughness, and a method for manufacturing the same. (Prior art) In recent years, especially around 1970, automobile exhaust gas has become a problem as a source of pollution, and modern automobile exhaust gas countermeasures have been
This is done by improving the engine and purifying exhaust gas using a catalyst.
従来排気ガス浄化用の触媒は、コージエライト等ハニカ
ム状に焼威したセラミックス上にｐｔなとの貴金属触媒
を含浸させたＴ−アルミナ粉を担持する構造のものが主
流を占めている。しかしながら、セラ逅ツクス製のハニ
カムは排気抵抗が高い、機械的な衝撃力に弱い等の欠点
を有しており、これらの欠点を改善するものとして、近
年耐熱性ステンレス調箔からなる金属担体が注目されて
いる．この金属担体は、高温かつ高速の排気ガスに耐え
る耐熱疲労性が要求される．
金属担体としては、一般的には実開昭６２−１８０６２
１号公報に開示されているように５０一前後の耐熱ステ
ンレス平板と波板とを交互に積層したもの、あるいは実
開昭６２−１９４４３６号公報に開示されているように
平板と波板を円筒状に巻き込んでハニカムを形威し、こ
れを耐熱性ステンレス鋼製外筒に装入した構造を有して
いる．
また、ハニカムを構成する金属箔にはＦｅ−Ｃｒ−Ａｊ
系の高耐熱性を有するフエライト系ステンレス鋼が用い
られるのが一般的である．
ハニカムを構成する平板と波板間は例えば実開昭６２−
１９４４３６号公報に開示されているように加熱・冷却
が繰り返され、耐熱疲労性が要求されるため、ハニカム
部は部分的にろう付けにより接合する方法が公知であり
、その構造の１例を第１図に示す．
触媒担体は、第１図に示す通り淳さ５０ｎ前後の耐熱ス
テンレス鋼平板１と波板２とを多重に円筒状に巻き込み
、これを耐熱ステンレス鋼製外筒３に装入した構造を有
している．
一般にハニカムを構戒するステンレス鋼箔は、冷間圧延
ままの状態で使用に供され、その表面は＃６００番程度
に研磨仕上げを行った圧延ロールが使用され表面粗度は
Ｒ ｗａｘで０． ２〜０．３一程度と極めて小さく、
光沢も非常に良好であるのが特徴的である．また自動車
の排ガス触媒用のハニカムに用いられる平板と波板のろ
う付けは、真空又は水素ガス等保護ガス中にて行われる
。ここで、ハニカムを構戒する平板と波板のろう付けに
よる接合箇所には、ろう材を固着させるためのバインダ
ー（結合剤）を平板と波板間に浸透あるいは塗布した後
、５０〜１００ ａｍ径の粒状のろう材を散布固着させ
、その後のろう付け熱処理により、ろう材を溶融させ、
平板と波板の接触部をろう付けにより固定するのがハニ
カムの一般的な製造方法である。Conventionally, catalysts for exhaust gas purification are mainly of a structure in which T-alumina powder impregnated with a precious metal catalyst such as PT is supported on honeycomb-shaped ceramics such as cordierite. However, honeycombs made of ceramics have drawbacks such as high exhaust resistance and weakness in mechanical impact forces.In recent years, metal carriers made of heat-resistant stainless steel foil have been developed to improve these drawbacks. Attention has been paid. This metal carrier is required to have thermal fatigue resistance that can withstand high temperature and high velocity exhaust gas. As a metal carrier, generally used Utility Model Application Publication No. 62-18062
As disclosed in Publication No. 1, heat-resistant stainless steel plates of around 50 mm and corrugated plates are alternately laminated, or as disclosed in Japanese Utility Model Application No. 62-194436, flat plates and corrugated plates are laminated in a cylinder. It has a structure in which it is rolled into a honeycomb shape and placed in a heat-resistant stainless steel outer cylinder. In addition, Fe-Cr-Aj is used as the metal foil constituting the honeycomb.
Ferritic stainless steel, which has high heat resistance, is generally used. For example, between the flat plate and the corrugated plate that make up the honeycomb,
As disclosed in Japanese Patent No. 194436, since heating and cooling are repeated and thermal fatigue resistance is required, a method is known in which the honeycomb part is partially joined by brazing. It is shown in Figure 1. As shown in Fig. 1, the catalyst carrier has a structure in which a heat-resistant stainless steel flat plate 1 and a corrugated plate 2 with a thickness of about 50 nm are wound into a cylindrical shape multiple times, and this is charged into a heat-resistant stainless steel outer cylinder 3. ing. Generally, stainless steel foil containing honeycomb is used in its cold-rolled state, and its surface is polished to about #600 using rolling rolls with a surface roughness of R wax of 0. It is extremely small, about 2 to 0.31,
It is characterized by its very good gloss. Furthermore, brazing of flat plates and corrugated plates used in honeycombs for automobile exhaust gas catalysts is carried out in vacuum or in a protective gas such as hydrogen gas. Here, at the joint part by brazing between the flat plate and the corrugated plate that holds the honeycomb, a binder (binding agent) for fixing the brazing material is permeated or applied between the flat plate and the corrugated plate, and then 50 to 100 am is applied. granular brazing filler metal is spread and fixed, and then the brazing filler metal is melted through brazing heat treatment,
A common method for manufacturing honeycombs is to fix the contact area between a flat plate and a corrugated plate by brazing.
ここでろう付けを確実に行うためには、バインダーを平
板と波板の接触部に均等かつ連続的に塗布することが重
要なことから、バインダーのぬれ性を向上させるため、
一般に箔材の表面はアセトン等の有機溶剤により、脱脂
洗浄が行われる。しかしながら、塗布するバインダーの
ぬれ性は箔表面の清浄度（汚れの程度）によって微妙に
左右され易く、僅かな圧延油や汚れの存在によっても、
バインダーの付着が不均一になり、ろう材の固着が一定
せず、その後のろう付け熱処理によっても、安定した接
合が得られていないのが現状である．〔発明が解決しよ
うとする課題〕
本発明は、ろう付構造を有する金属ハニカムの欠点であ
る平板と波板のろう接合性を改善し、かつ金属ハニカム
の長所を最大限に発揮させることを目的とするものであ
る．
〔課題を解決するための手段〕
本発明の要旨とするところは、下記のとおりである．
（１）ろう付け構造を有する自動車の排ガス触媒担体に
用いられる耐熱性ステンレス鋼製の金属箔において、表
面粗度Ｒｍａｘが０．７〜２． ０μｍであることを特
徴とするダル仕上金属箔．
（２）ダル仕上ロールを用い、冷間圧延により製造する
ことを特徴とする前項ｌに記載のダル仕上金属箔の製造
方法。In order to perform brazing reliably here, it is important to apply the binder evenly and continuously to the contact area between the flat plate and the corrugated plate, so in order to improve the wettability of the binder,
Generally, the surface of the foil material is degreased and cleaned using an organic solvent such as acetone. However, the wettability of the applied binder tends to be slightly influenced by the cleanliness (degree of dirt) of the foil surface, and even the presence of a small amount of rolling oil or dirt can cause
Currently, the adhesion of the binder becomes uneven, the adhesion of the brazing metal is inconsistent, and even with the subsequent brazing heat treatment, a stable bond cannot be obtained. [Problems to be Solved by the Invention] The purpose of the present invention is to improve the solder bondability between a flat plate and a corrugated plate, which is a drawback of metal honeycombs having a brazed structure, and to maximize the advantages of metal honeycombs. This is what we mean. [Means for Solving the Problems] The gist of the present invention is as follows. (1) A metal foil made of heat-resistant stainless steel used for an automobile exhaust gas catalyst carrier having a brazed structure has a surface roughness Rmax of 0.7 to 2. A dull finish metal foil characterized by a thickness of 0 μm. (2) The method for producing a dull-finished metal foil according to item 1 above, characterized in that the production is performed by cold rolling using a dull-finishing roll.
（３）耐熱性ステンレス鋼製の金属済の平板と波板とを
多重に円筒状に巻き込み、耐熱ステンレス鋼製外筒に挿
入してなり、ろう付け構造を有する自動車の排ガス触媒
担体において、該平板と波板は表面粗度Ｒｍａｘが０．
７〜２． Ｏ ｎであるダル仕上金属箔であることを特
徴とする自動車の排ガス触媒担体．
以下に本発明を詳細に説明する。(3) In an automobile exhaust gas catalyst carrier having a brazed structure, which is made by winding multiple heat-resistant stainless steel metal flat plates and corrugated plates into a cylindrical shape and inserting them into a heat-resistant stainless steel outer cylinder, The surface roughness Rmax of flat plates and corrugated plates is 0.
7-2. An exhaust gas catalyst carrier for an automobile, characterized in that it is a metal foil with a dull finish. The present invention will be explained in detail below.
本発明は金属ハニカムを構成する金属箔をダル仕上げに
調製したものを用いることを特徴としており、ＪＩＳ（
Ｂ ０６０１−１９７０ ）に規格化されている表面粗
度（Ｒｍａｘ ）は０．７〜２．０ｐｍ，好ましくは１
．０〜１．５ｎである。かかる金属箔の製造法としては
、たとえば＃８０〜＃１２０番程度の研磨仕上げを行っ
た圧延ロールを用いて冷間圧延を行うことにより、表面
粗度ＲｍａｘＯ．７〜２．０μ膿のダル仕上金属箔が得
られる。また本発明は上記金属箔をハニカムを形成する
箔材として用いて製造した自動車の排ガス触媒担体でも
ある。なお本発明でいう金属箔とはＦｅ Ｃｒ ｌ
’Ｊ系を主体とする高温のエンジン排気ガスに対して充
分に耐熱性を有するものである。The present invention is characterized in that the metal foil constituting the metal honeycomb is prepared with a dull finish, and is based on JIS (
The surface roughness (Rmax) standardized to B 0601-1970 is 0.7 to 2.0 pm, preferably 1
．． It is 0 to 1.5n. As a manufacturing method for such metal foil, for example, cold rolling is performed using a mill roll that has been polished to a number of about #80 to #120, so that the surface roughness RmaxO. A dull finish metal foil with a thickness of 7 to 2.0 μm is obtained. The present invention also provides an exhaust gas catalyst carrier for an automobile manufactured using the above metal foil as a foil material forming a honeycomb. Note that the metal foil referred to in the present invention is Fe Cr l
It has sufficient heat resistance against high-temperature engine exhaust gas mainly composed of 'J series.
〔作 用］
本発明のハニカムを構戒する金属箔は表面粗度が通常の
圧延箔の粗度Ｒｍａｘ０．２〜０． ３ ｎに比べてＲ
ｍａｘ０．７〜２．Ｏｎと粗くダル仕上げであるため、
ろう材を固着させるバインダーのぬれ性が向上し、ハニ
カムを構戊する平板と波板の接触部へバインダーを均一
効果的に付着させることができるため、ろう材の固着性
が向上し、ろう付熱処理後のろう付性がきわめて良好と
なる。[Function] The metal foil forming the honeycomb of the present invention has a surface roughness Rmax of 0.2 to 0.0 that of normal rolled foil. 3 R compared to n
max0.7~2. Because it has a rough and dull finish,
The wettability of the binder that fixes the brazing filler metal is improved, and the binder can be applied uniformly and effectively to the contact area between the flat plate and the corrugated plate that make up the honeycomb, which improves the adhesion of the brazing filler metal and improves brazing. Brazing properties after heat treatment are extremely good.
また、本発明におけるダル仕上箔は、種々の検討を行っ
た結果、ダル仕上箔を得る手段としては、圧延後の箔表
面を研磨することによっても製造可能であるが、箔はそ
の形状等から研磨は非常に困難であり、コストアップに
なること、また、その他酸溶液等による腐食も考えられ
るが、箔表面を一定の粗度を有するように効果的に仕上
げることも、研磨による方法と同様困難かつコストアッ
プになり、粗ロール圧延による方法、例えば＃８０番〜
＃１２０番研磨仕上げ程度の圧延ロールによって圧延す
ることによって、表面粗度Ｒｍａｘ０．７〜２． ０
＃Ｉｌを有するダル仕上箔を得るのが最も効果的である
．
本発明において、箔の表面粗度の下限をＲｍａｘＯ．１
ｎ，上限をＲｍａｘ ２．Ｏｎと定めたのは、ステンレ
ス鋼箔へバインダーを塗布し、ぬれ性に及ぼす表面粗度
の影響を検討した結果を第２図に示すごとく、表面粗度
Ｒｍａｘ Ｏ．２〜０．６μ履ではぬれ性が著しく劣る
のに対して、Ｒｍａｘ０．７一以上では、ぬれ性ランク
が２〜３ランク向上し良好となる。またＲｍａｘ２．Ｏ
ｎを超えても、ぬれ性は良好であるがそれほど変化はな
く、箔の最適な表面粗度としては、Ｒｍａｘ Ｏ．７〜
２．０４、好ましくは１． ０ 〜１． ５μである．
また、本発明のダル仕上箔によれば、ｐｔ等の貴金属触
媒を担持させる上でもその密着性が向上し有利となる．
しかして本発明に従った金属箔よりなるメタルハニカム
においては、良好な耐熱疲労性を有することから、エン
ジンに近接して、触媒担体を設置することが可能であり
、触媒効果の早期立上げが可能である等のメタルハニカ
ムの利点を最大限に発揮させることができる．
以下、本発明の実施例を示す．
〔実施例〕
Ｆｅ Ｃｒ Ａｊ系の耐熱性フエライトステンレス
鋼から成る板厚５０−の各種ダル仕上箔を用いてＡニカ
ムを形成し、第１図に示す態様の金属担体を作成し、排
気１２ ０ ０ ０ ｃｃのエンジンに搭載し、ベンチ
テストを実施した。８００゜Ｃ以上１分、１５０゜Ｃ以
下１分の合計１サイクル１５分の冷熱試験を行い、本発
明と従来法の比較を行った結果を第１表に示す。比較例
のものは、いずれも冷熱５００サイクルで、排気ガス出
側に８〜１５閣のズレ発生がみられた。また冷熱ｌ００
０サイクル行ったものには７−ｕ，０．の一部剥離もみ
られた。In addition, as a result of various studies, the dull finish foil of the present invention can be produced by polishing the surface of the foil after rolling, but the foil can be produced depending on its shape etc. Polishing is extremely difficult, increases costs, and may cause corrosion due to acid solutions, etc., but it is also possible to effectively finish the foil surface to a certain level of roughness, similar to the polishing method. This method is difficult and increases the cost, and the method using rough roll rolling, for example #80 and above, is difficult.
By rolling with #120 polishing rolls, the surface roughness Rmax is 0.7 to 2. 0
It is most effective to obtain a dull finish foil with #Il. In the present invention, the lower limit of the surface roughness of the foil is set to RmaxO. 1
n, the upper limit is Rmax2. The reason why On was determined was that the surface roughness Rmax O. When the Rmax is 0.7 μm or more, the wettability is extremely poor, whereas the wettability is improved by 2 to 3 ranks and becomes good. Also Rmax2. O
Even if it exceeds Rmax, the wettability is good but does not change much. 7~
2.04, preferably 1. 0 to 1. It is 5μ. Further, the dull finish foil of the present invention is advantageous in supporting noble metal catalysts such as PT because of its improved adhesion.
However, since the metal honeycomb made of metal foil according to the present invention has good thermal fatigue resistance, it is possible to install the catalyst carrier close to the engine, and the catalyst effect can be started up quickly. It is possible to maximize the advantages of metal honeycomb. Examples of the present invention are shown below. [Example] A nicomb was formed using various dull finish foils made of heat-resistant ferrite stainless steel of the Fe Cr Aj type with a thickness of 50 mm, a metal carrier of the embodiment shown in Fig. 1 was created, and the exhaust gas was 120 mm. It was installed in a 0.0 cc engine and a bench test was conducted. Table 1 shows the results of a comparison between the present invention and the conventional method by conducting a thermal test for a total of 15 minutes per cycle of 1 minute above 800°C and 1 minute below 150°C. In all of the comparative examples, a deviation of 8 to 15 degrees was observed on the exhaust gas outlet side after 500 cycles of cooling and heating. Also cold l00
7-u, 0.0 for those that performed 0 cycles. Some peeling was also observed.
一方本発明のダル仕上箔をハニカム形成材として用いた
金属担体においては、冷熱１０００サイクル後も一部を
除いてＴ ｋｌｚＯｓの剥離もなく、構造上の異常も
認められなかった．
〔発明の効果〕
以上述べたごとく本発明は自動車排気ガス触媒金属担体
を製造する方法において、表面をダル仕上げに調整を行
った箔材をハニカム形成材として用いることにより、ろ
う付け性が良好となると共にｐｔ等の貴金属触媒の密着
性も向上し、急速な加熱冷却にも耐える耐熱疲労性を有
する金属担体を提供することを可能にしたものである．On the other hand, in the metal carrier using the dull finish foil of the present invention as a honeycomb forming material, no peeling of TklzOs was observed except for some parts, and no structural abnormality was observed even after 1000 cycles of cooling and heating. [Effects of the Invention] As described above, the present invention provides a method for producing a metal carrier for an automobile exhaust gas catalyst, which achieves good brazing properties by using a foil material whose surface has been adjusted to a dull finish as a honeycomb forming material. At the same time, the adhesion of noble metal catalysts such as PT is improved, making it possible to provide a metal carrier with thermal fatigue resistance that can withstand rapid heating and cooling.
第１図は本発明を適用した金属担体の一例を示す断面図
、（ａ）は箔を巻回した状態を示し、（ｂ）はろう付け
部分を説明する図である．
第２図は、箔の表面粗度がバインダーのぬれ性に及ぼす
影響を示す図である．
１・・・平板、２・・・波板、３・・・外筒、４，５・
・・ハニカム部のろう付け部、６・・・ハニカム部のろ
う付けがされていない部分．
第１図
（０−）FIG. 1 is a sectional view showing an example of a metal carrier to which the present invention is applied, (a) shows a state in which foil is wound, and (b) is a diagram illustrating a brazed part. Figure 2 is a diagram showing the influence of the surface roughness of the foil on the wettability of the binder. 1... Flat plate, 2... Corrugated plate, 3... Outer cylinder, 4, 5...
... Brazed portion of the honeycomb portion, 6... portion of the honeycomb portion that is not brazed. Figure 1 (0-)
Claims (3)
用いられる耐熱性ステンレス鋼製の金属箔において、表
面粗度Ｒｍａｘが０．７〜２．０μｍであることを特徴
とするダル仕上金属箔。(1) A metal foil made of heat-resistant stainless steel that is used as an exhaust gas catalyst carrier for automobiles and has a brazed structure, and is characterized by having a surface roughness Rmax of 0.7 to 2.0 μm.
ことを特徴とする請求項１に記載のダル仕上金属箔の製
造方法。(2) The method for producing a dull finish metal foil according to claim 1, characterized in that the production is performed by cold rolling using a dull finish roll.
多重に円筒状に巻き込み、耐熱ステンレス鋼製外筒に挿
入してなり、ろう付け構造を有する自動車の排ガス触媒
担体において、該平板と波板は表面粗度Ｒｍａｘが０．
７〜２．０μｍであるダル仕上金属箔であることを特徴
とする自動車の排ガス触媒担体。(3) An automobile exhaust gas catalyst carrier having a brazed structure, which is made by winding heat-resistant stainless steel metal foil flat plates and corrugated plates in multiple layers into a cylindrical shape and inserting them into a heat-resistant stainless steel outer cylinder. The surface roughness Rmax of flat plates and corrugated plates is 0.
An automobile exhaust gas catalyst carrier characterized in that it is a dull finish metal foil having a thickness of 7 to 2.0 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1155057A JP2857767B2 (en) | 1989-06-17 | 1989-06-17 | Rough-finished metal foil and automotive exhaust catalyst support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1155057A JP2857767B2 (en) | 1989-06-17 | 1989-06-17 | Rough-finished metal foil and automotive exhaust catalyst support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0323309A true JPH0323309A (en) | 1991-01-31 |
| JP2857767B2 JP2857767B2 (en) | 1999-02-17 |
Family
ID=15597729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1155057A Expired - Lifetime JP2857767B2 (en) | 1989-06-17 | 1989-06-17 | Rough-finished metal foil and automotive exhaust catalyst support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2857767B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0988892A1 (en) * | 1998-03-16 | 2000-03-29 | Nippon Steel Corporation | Diffusion joining metal carrier and method of manufacturing it |
| WO2001053669A1 (en) * | 2000-01-20 | 2001-07-26 | Nippon Steel Corporation | Coarse surface-finished metallic foil with good corrugating workability and catalytic support for purification of exhaust gas |
| JP2009165979A (en) * | 2008-01-17 | 2009-07-30 | Jfe Steel Corp | CATALYST CARRIER OF EXHAUST GAS TREATMENT APPARATUS AND IRON-CHROMIUM-ALUMINUM (Fe-Cr-Al) TYPE ALLOY FOIL |
| DE102008022519A1 (en) * | 2008-05-07 | 2009-11-12 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb bodies of metallic foils and process for its production |
| US8048823B2 (en) * | 2007-09-07 | 2011-11-01 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Metallic foil for producing honeycomb bodies, honeycomb body produced therefrom and method of producing a honeycomb body using a foil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6159775B2 (en) | 2014-10-31 | 2017-07-05 | 新日鐵住金ステンレス株式会社 | Ferritic stainless steel with excellent resistance to exhaust gas condensate corrosion and brazing, and method for producing the same |
-
1989
- 1989-06-17 JP JP1155057A patent/JP2857767B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0988892A1 (en) * | 1998-03-16 | 2000-03-29 | Nippon Steel Corporation | Diffusion joining metal carrier and method of manufacturing it |
| EP0988892A4 (en) * | 1998-03-16 | 2009-06-03 | Nippon Steel Corp | Diffusion joining metal carrier and method of manufacturing it |
| WO2001053669A1 (en) * | 2000-01-20 | 2001-07-26 | Nippon Steel Corporation | Coarse surface-finished metallic foil with good corrugating workability and catalytic support for purification of exhaust gas |
| EP1251250A1 (en) * | 2000-01-20 | 2002-10-23 | Nippon Steel Corporation | Coarse surface-finished metallic foil with good corrugating workability and catalytic support for purification of exhaust gas |
| EP1251250A4 (en) * | 2000-01-20 | 2003-04-02 | Nippon Steel Corp | Coarse surface-finished metallic foil with good corrugating workability and catalytic support for purification of exhaust gas |
| US6699587B2 (en) | 2000-01-20 | 2004-03-02 | Nippon Steel Corporation | Rough surface finished metallic foil with good corrugation workability and catalyst support for exhaust gas purification |
| US8048823B2 (en) * | 2007-09-07 | 2011-11-01 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Metallic foil for producing honeycomb bodies, honeycomb body produced therefrom and method of producing a honeycomb body using a foil |
| JP2009165979A (en) * | 2008-01-17 | 2009-07-30 | Jfe Steel Corp | CATALYST CARRIER OF EXHAUST GAS TREATMENT APPARATUS AND IRON-CHROMIUM-ALUMINUM (Fe-Cr-Al) TYPE ALLOY FOIL |
| DE102008022519A1 (en) * | 2008-05-07 | 2009-11-12 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Honeycomb bodies of metallic foils and process for its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2857767B2 (en) | 1999-02-17 |
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