JPH06106075A - Honeycomb body for purification of exhaust gas - Google Patents
Honeycomb body for purification of exhaust gasInfo
- Publication number
- JPH06106075A JPH06106075A JP4276746A JP27674692A JPH06106075A JP H06106075 A JPH06106075 A JP H06106075A JP 4276746 A JP4276746 A JP 4276746A JP 27674692 A JP27674692 A JP 27674692A JP H06106075 A JPH06106075 A JP H06106075A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb body
- welding
- exhaust gas
- gas purifying
- joint portion
- 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
- 238000000746 purification Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 55
- 238000005219 brazing Methods 0.000 claims abstract description 46
- 238000003466 welding Methods 0.000 claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 7
- 238000005304 joining Methods 0.000 claims description 21
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract 3
- 150000002739 metals Chemical class 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 67
- 238000000034 method Methods 0.000 description 11
- 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
- 239000000470 constituent Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229910052721 tungsten Inorganic materials 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
- 239000010953 base metal Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- -1 more specifically Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/02—Honeycomb structures
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】一般に自動車の排気ガスの浄化手
段として排気系統の途中に介装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触媒を
担持するためのメタル製ハニカム体に関する。BACKGROUND OF THE INVENTION In general, an exhaust gas purifying device which is interposed in the middle of an exhaust system as a means for purifying exhaust gas of an automobile, and particularly a metal honeycomb for supporting an exhaust gas purifying catalyst which is a main component thereof. Regarding the body
【０００２】更に詳しくは、本発明は、ハニカム体の固
着手段として溶接による接合手段とろう材による接合手
段を併用して適用した耐振性、耐熱強度に優れるととも
に、経済的なメタル製ハニカム体に関するものである。More specifically, the present invention relates to a honeycomb body made of metal, which is excellent in vibration resistance and heat resistance and is applied by using a joining means by welding and a joining means by a brazing material together as a means for fixing a honeycomb body, and which is economical. It is a thing.
【０００３】[0003]
【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
性でかつ薄肉金属板製の波板状帯材を単独で、あるいは
平板状帯材と波板状帯材を相互に当接するように折畳み
あるいは重積してハニカム状の構造としたもの（以下、
ハニカム体という。）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、Ｓ字状タイプ、放射状タイプ、Ｘラップ状タイプ
など種々のハニカム体が得られる。2. Description of the Related Art Conventionally, a metal carrier for supporting an exhaust gas purifying catalyst of this kind (for example, a catalyst using Pt, Rh, Pd, etc.) has a large amount of the catalyst carried 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-supported matrix as much as possible. , Etc., the heat-resistant corrugated strip made of thin metal plate is singly or folded or stacked so that the flat strip and the corrugated strip are in contact with each other. The structure of
It is called a honeycomb body. ) Is well known. It should be noted that various honeycomb bodies such as a laminated type, a wound type, an S-shaped type, a radial type, and an X-wrapped type can be obtained depending on the method of forming the honeycomb body.
【０００４】前記したメタル製ハニカム体は、例えば、
0.1 mm以下（好ましくは50μ以下）の耐熱性の薄肉鋼板
からなる平板状帯材と、前記薄肉鋼板を波形状に成形し
た波板状帯材とを、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）をもつハニカム
体とされる。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に
収納されるとともに相互に接合固着され、耐振構造の排
気ガス浄化装置とされる。The metal honeycomb body described above is, for example,
A flat plate-shaped strip 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 plate-shaped strip formed by corrugating the thin steel plate are overlapped so as to have abutting portions. The honeycomb body is stacked and spirally wound in a bundle to form a honeycomb body having a large number of mesh-like vent holes (cells) for exhaust gas passages in the axial direction. Then, the wound and laminated honeycomb bodies are housed in a cylindrical metal case having both ends opened as needed and are bonded and fixed to each other to form an exhaust gas purifying device having a vibration resistant structure.
【０００５】周知のように、この種の排気ガス浄化装置
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メタル製ハ
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における1000℃〜常温の
加熱冷却のサイクル下での耐久性）、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）の耐熱鋼を厚さ数十μの箔に圧延
したものが使用されている。また、前記耐熱鋼に耐高温
酸化性を改善するために少量の希土類元素成分（ＲＥ
Ｍ）を添加したものも使用されている。As is well known, this type of exhaust gas purifying apparatus is used under the severe thermal environment conditions of an exhaust gas system, and therefore, the metal honeycomb body, which is a main component thereof, has a high temperature. Corrosion resistance (gas corrosion resistance, corrosion resistance in exhaust gas system around 1000 ℃), cold and heat resistance (durability under heating and cooling cycle of 1000 ℃ to room temperature in cycle of stopping and starting internal combustion engine), It is preferable that the foil material is made of heat-resistant steel having excellent physical properties such as high-temperature oxidation resistance (durability against abnormal oxidation at high temperatures). As a material for manufacturing this type of honeycomb body, a material obtained by rolling Fe—Cr—Al-based (20Cr-5Al-based) heat-resistant steel into a foil having a thickness of several tens of μ is used. In addition, in order to improve the high temperature oxidation resistance of the heat resistant steel, a small amount of a rare earth element component (RE
M) added is also used.
【０００６】また、排気ガス浄化装置は厳しい振動付加
のもとで使用される関係上、その主要な構成要素である
メタル製ハニカム体は、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。Since the exhaust gas purifying apparatus is used under severe vibration, the metal honeycomb body, which is a main component of the exhaust gas purifying apparatus, has a contact portion between the strips constituting the honeycomb body. Some or all of them are fixed by welding, brazing material, etc., and have a vibration resistant structure.
【０００７】前記した、メタル製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
-13462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、前記したようにハニカム体の構
成部材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欠点を有する
ものである。Many techniques have been proposed as the above-mentioned welding technique for metal honeycomb bodies and fixing technique using brazing material. For example, as joining means by welding, Japanese Patent Laid-Open No.
-13462, Japanese Utility Model Laid-Open No. 62-156112, and Japanese Patent Laid-Open No. 63-36843 propose laser beam welding, electron beam welding, plasma beam welding, and the like. However, in these various welding means, since the constituent members of the honeycomb body are heat-resistant as described above, there is a drawback that a high temperature is applied to the weld and the weld becomes brittle in the cast structure. is there.
【０００８】一方、ろう材による接合手段としては、特
開昭56-437号や特公昭63-44466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。し
かしながら、この種のろう材としては例えばＮｉ系の高
温ろう材を使用しなければならず、極めて高価であると
いう欠点を有するものである。On the other hand, as a joining method using a brazing filler metal, Japanese Patent Laid-Open No. 56-437 and Japanese Patent Publication No. 63-44466 consider the deterioration of the base metal and the relaxation and absorption of the thermal stress of the honeycomb body by the brazing filler metal. On the other hand, a method has been proposed in which a brazing material is applied to a part or all of the abutting portions of the strips forming the honeycomb body. However, as a brazing material of this kind, for example, a Ni-based high-temperature brazing material must be used, which has a drawback of being extremely expensive.
【０００９】前記したように、排気ガス浄化装置の主要
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、耐久性に優れる
とともに経済的なハニカム体を提供するという点では十
分なものではない。ハニカム体には、前記した厳しい熱
的環境条件下において、極めて大きな熱による変形力が
印加されるため（ハニカム体の半径方向及び軸方向）、
更にこれに振動条件が加わるため、ハニカム体の耐久性
の改善は大きな問題である。As described above, in the honeycomb body, which is a main constituent element of the exhaust gas purifying apparatus, efforts are made from the viewpoint of material and vibration-proof structure in order to improve and improve durability (vibration resistance, heat resistance strength, etc.). Although it has been paid, it is not sufficient in terms of providing a honeycomb body which is excellent in durability and economical. Under the severe thermal environment conditions described above, an extremely large amount of heat-induced deformation force is applied to the honeycomb body (radial and axial directions of the honeycomb body).
Further, since vibration conditions are added to this, improvement of durability of the honeycomb body is a big problem.
【００１０】[0010]
【発明が解決しようとする問題点】本発明者らは、前記
した従来技術の問題、限界に鑑み耐熱強度、耐振性に優
れるとともに経済的なハニカム体を提供する方策につい
て鋭意検討を加えた。その結果、ハニカム体を構成する
波板状帯材あるいは波板状帯材と平板状帯材の当接部に
おいて、ハニカム体に印加される熱変形力の緩和、吸収
を考慮して所望の部位の当接部に溶接による接合手段と
ろう材による接合手段を併用して適用したところ、耐久
性に優れるとともに経済的なハニカム体が得られること
を見い出し、本発明を完成するに至った。DISCLOSURE OF INVENTION Problems to be Solved by the Invention In view of the above-mentioned problems and limitations of the prior art, the present inventors have earnestly studied a method for providing an economical honeycomb body having excellent heat resistance and vibration resistance. As a result, at the contact portion between the corrugated strip material or the corrugated strip material and the flat strip material forming the honeycomb body, a desired portion is considered in consideration of relaxation and absorption of the thermal deformation force applied to the honeycomb body. When the welding means and the brazing material joining means are applied together to the abutting part of No. 2, it was found that a honeycomb body having excellent durability and economical can be obtained, and the present invention has been completed.
【００１１】[0011]
【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、薄肉金属板製の波板状帯材の単独、あるいは
該波板状帯材と薄肉金属板製の平板状帯材を相互に当接
するように重積して製作した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、前記ハニカム体を構成
する前記波板状帯材同士の当接部、または前記波板状帯
材と平板状帯材の当接部の所望部位が、(i) 溶接による
接合部位、及び、(ii)少なくとも前記溶接による接合部
位の周囲のろう材による接合部位、とから成るものであ
ることを特徴とする排気ガス浄化用ハニカム体に関する
ものである。The present invention will be summarized as follows.
DISCLOSURE OF THE INVENTION The present invention is directed to exhaust gas purification, which is produced by using a corrugated strip made of a thin metal plate alone or by stacking the corrugated strip and a flat strip made of a thin metal plate so as to be in contact with each other. In a honeycomb body for carrying a catalyst for use, a contact portion between the corrugated strip members forming the honeycomb body, or a desired portion of the contact portion between the corrugated strip member and the flat strip member, The present invention relates to an exhaust gas purifying honeycomb body, comprising: (i) a welded portion, and (ii) at least a welded portion around the welded portion.
【００１２】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。The technical construction and embodiments of the present invention will be described in detail below with reference to the drawings. Needless to say, the present invention is not limited to the illustrated one.
【００１３】本発明の代表的なハニカム体(A) の全体構
造は、図５〜図６に示される平板状帯材(1) と波板状帯
材(2) とから成る巻回タイプのものと、積層タイプのも
のである。本発明のハニカム体(A) は、必要に応じて図
示されるように金属製ケーシング(4) 内に填装され、固
着されるものである。即ち、ケーシング(4) 内に収納さ
れた後、常法に従ってハニカム体(A) の外周面とケーシ
ング(4) の内周面の所望部位が溶接、ろう接合などによ
り固着される。なお帯材(1,2) の巻回あるいは積層成形
により、網目状の排気ガス通気孔路（セル）(3) が自動
的に形成される。The overall structure of a typical honeycomb body (A) of the present invention is of a winding type composed of a flat strip (1) and a corrugated strip (2) shown in FIGS. One is a laminated type. The honeycomb body (A) of the present invention is, if necessary, filled and fixed in a metal casing (4) as illustrated. That is, after being housed in the casing (4), the outer peripheral surface of the honeycomb body (A) and a desired portion of the inner peripheral surface of the casing (4) are fixed to each other by welding, brazing or the like according to a conventional method. The mesh-like exhaust gas vent passages (cells) (3) are automatically formed by winding or laminating the strips (1, 2).
【００１４】本発明において、ハニカム体(A) の構造
は、図５〜図６のものに限定されず、このほかに下記に
示すものなどがある。 (i) ハニカム体(A) を平板状帯材(1) と波板状帯材(2)
により構成するのでなく、波板状帯材(2) 単独で構成し
た巻回または積層タイプのハニカム体とする。この場
合、波板状帯材(2) の波形は、帯材(2) 同士が隣接して
当接するときに、一方の層の山部（または谷部）が他方
の層の谷部（または山部）に落ち込まないように形成さ
れていなければならない。具体的には、波形をハニカム
体の軸方向に対し所定の角度をもつように形成すればよ
い。 (ii)前記帯材(1,2) を相互に当接させて浄化エレメント
と成し、該浄化エレメントの所望の数を固定軸を起点と
して外延させて放射状タイプのハニカムとする。 (iii)前記帯材(1,2) を相互に当接させて浄化エレメン
トと成し、該浄化エレメントを所望の段数に階層状に重
積し、上下最外層に設定した二つの固定点を逆方向に押
圧成形して各浄化エレメントの横断面形状がＳ字状タイ
プのハニカムとする。 (iv)前記帯材(1,2) を重積し、所望の相隣接した層を有
する浄化エレメントと成し、該浄化エレメントの少なく
とも２以上を保有具により各浄化エレメントの一端部を
相互に隣接させるように保持するとともに、これを該保
持具を中心にして同一方向に巻回してＸ−ラップのハニ
カムとする。In the present invention, the structure of the honeycomb body (A) is not limited to those shown in FIGS. 5 to 6, and the following structures are also available. (i) The honeycomb body (A) is composed of a flat strip (1) and a corrugated strip (2).
A corrugated plate material (2) is not used to constitute the above, but is a wound or laminated type honeycomb body. In this case, the corrugation of the corrugated strip (2) is such that when the strips (2) abut each other, the peaks (or valleys) of one layer (or valleys) of the other layer (or It must be formed so as not to fall into the mountain area. Specifically, the corrugations may be formed with a predetermined angle with respect to the axial direction of the honeycomb body. (ii) The strips (1, 2) are brought into contact with each other to form a purification element, and a desired number of the purification elements are extended outward from the fixed shaft as a starting point to form a radial type honeycomb. (iii) The strips (1, 2) are brought into contact with each other to form a purification element, the purification elements are stacked in layers in a desired number of stages, and two fixing points set in the upper and lower outermost layers are provided. By pressing in the opposite direction, a honeycomb having an S-shaped cross-sectional shape of each purification element is formed. (iv) The strips (1, 2) are stacked to form a purification element having desired adjacent layers, and at least two or more of the purification elements are mutually held at one end of each purification element by a holding tool. The honeycombs are held so as to be adjacent to each other, and are wound in the same direction around the holder to form an X-wrap honeycomb.
【００１５】本発明のハニカム体(A) において、最大の
特徴とする点は、ハニカム体で構成する帯材(1,2) の当
接部の所望部位が、溶接による接合部位(W) と少なくと
も前記溶接による接合部位(W) の周囲に存在するろう材
による接合部位(B) とにより構成されるという点であ
る。別言すれば、帯材(1,2) の当接部の所望部位に、溶
接による接合手段とろう材による接合手段を併用して適
用するという点である。前記本発明の技術的構成が図１
〜図２に示されている。The greatest feature of the honeycomb body (A) of the present invention is that the desired portion of the abutting portion of the strips (1, 2) made of the honeycomb body is the joint portion (W) by welding. The point is that it is composed of at least the joint portion (W) formed by the welding and the joint portion (B) formed by the brazing material existing around the joint portion (W). In other words, the joining means by welding and the joining means by brazing material are used together at a desired portion of the contact portion of the strips (1, 2). The technical configuration of the present invention is shown in FIG.
~ Shown in FIG.
【００１６】図１は、図５の巻回タイプのハニカム体
(A) の１部拡大図である。図２は、図１の点線指示部分
を更に拡大した図である。図示されるように、本発明の
ハニカム体(A) を構成する平板状帯材(1) と波板状帯材
(2) の当接部において、所望部位の当接部が接合固着さ
れる場合、各接合部位はほぼ中央部に溶接による接合部
位(W) （Ｗ＝Ｗ1 ，Ｗ2 ，…………Ｗn ）、及び該溶接
による接合部位(W) の周囲にろう材による接合部位(B)
（Ｂ＝Ｂ1，Ｂ1 ´，Ｂ2 ，Ｂ2 ´…………Ｂn ，Ｂn
´）を有するように接合される。なお、図１〜図２にお
いて、平板状帯材(1) と波板状帯材(2) の当接部は、点
接触のものが図示されている。しかしながら、本発明に
おいて、両帯材(1,2) の当接の態様は面接触であっても
よいことはいうまでもないことである。また、図１〜図
２にも図示されているが、一般にろう材による接合部位
の面積は、溶接による接合部位の面積より大きいもので
ある。FIG. 1 is a winding type honeycomb body of FIG.
It is a 1st part enlarged view of (A). FIG. 2 is an enlarged view of a portion indicated by a dotted line in FIG. As shown in the drawing, the flat plate-shaped strip (1) and the corrugated plate-shaped strip that constitute the honeycomb body (A) of the present invention
In the contact portion of (2), when the contact portion of the desired portion is bonded and fixed, each joint portion is welded to the substantially central portion (W) (W = W 1 , W 2 , ... W n ), and a welded part (B) around the welded part (W) around the welding
(B = B 1 , B 1 ′, B 2 , B 2 ′ ………… B n , B n
′) Are joined together. 1 to 2, the abutting portions of the flat strip (1) and the corrugated strip (2) are shown as point contacts. However, it goes without saying that in the present invention, the manner of contact between the two strips (1, 2) may be surface contact. In addition, as shown in FIGS. 1 and 2, generally, the area of the joining portion by the brazing material is larger than the area of the joining portion by welding.
【００１７】本発明において、ハニカム体(A) を構成す
る平板状帯材(1) と波板状帯材(2)の当接部において、
どの部位に溶接による接合部位(W) とろう材による接合
部位(B) を設置するかは自由である。しかしながら、こ
の種のハニカム体(A) においては、ハニカム体(A) の軸
方向に大きな熱応力に基づく変形力が印加されるため、
該変形力を緩和、吸収するために図３〜図４に示される
部位が好ましい。In the present invention, at the contact portion between the flat strip (1) and the corrugated strip (2) constituting the honeycomb body (A),
It is possible to freely decide where the welding joint (W) and the brazing joint (B) should be installed. However, in this type of honeycomb body (A), since a deformation force based on a large thermal stress is applied in the axial direction of the honeycomb body (A),
The portions shown in FIGS. 3 to 4 are preferable for relaxing and absorbing the deforming force.
【００１８】図３は、巻回タイプのハニカム体(A) の一
方の端部とその近傍部位における帯体(1,2) の当接部
（図の斜線部）において、溶接による接合部位(W) とろ
う材による接合部位(B) が存在することを示すものであ
る。また、図４は、巻回タイプのハニカム体(A) の両方
の端部とその近傍部位における帯体(1,2) の当接部（図
の斜線部）において、溶接による接合部位(W) とろう材
による接合部位(B) が存在することを示すものである。
前記した図３〜図４の態様により、溶接時の母材の劣化
を補償しながら、かつ少ない量の高温ろう材のもとで耐
久性に優れたハニカム体(A) を製作することができる。
なお、本発明において、前記図３〜図４に示されるもの
の変形例として、図中の斜線部以外の部位をろう材によ
る接合部としてもよいことはいうまでもないことであ
る。FIG. 3 shows that at one end of the wound type honeycomb body (A) and the contact portion (hatched portion in the figure) of the strips (1, 2) in the vicinity thereof, the joint portion by welding ( This indicates that there is a joint (B) between W) and the brazing material. In addition, FIG. 4 shows that at both end portions of the wound type honeycomb body (A) and the abutting portions (hatched portions in the figure) of the strip bodies (1, 2) in the vicinity thereof, the joint portion (W ) And the brazing filler metal joint (B) is present.
3 to 4 described above, it is possible to manufacture a honeycomb body (A) having excellent durability while compensating for deterioration of the base material during welding and using a small amount of high temperature brazing material. .
Needless to say, in the present invention, as a modified example of the one shown in FIGS. 3 to 4, a portion other than the hatched portion in the drawings may be a joint portion made of a brazing material.
【００１９】本発明において、溶接による接合部位(W)
を形成するときに採用する溶接手段及び溶接方法として
は、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。例えば溶接手段として、
スポット溶接、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を採用すればよい。In the present invention, the joint part (W) by welding
As a welding means and a welding method to be used when forming the slab, those known in the art may be used and are not particularly limited. For example, as welding means,
Spot welding, laser beam welding, electron beam welding, plasma beam welding or the like may be adopted.
【００２０】本発明において、ろう材による接合部位
(B) を形成するときに、採用するろう材及びろう接方法
は、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、ろう材として
は、高温ろう材、より具体的にはＮｉ、Ａｌ、Ｃｒ、Ｆ
ｅ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。更に、前記成分に
Ｙ、Ｌａ、Ｃｅ、Ｔｉ、Ｚｒ加えて、耐熱酸化性などを
向上させたろう材を用いてもよい。また、前記したよう
にハニカム体(A) を構成する帯材(1,2) にＡｌ成分を添
加したものにおいては、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、耐熱酸化
性を付与するＡｌ2 Ｏ3 の形成量が減少してしまう。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、この場合、低い温度で十分な強度のろう材が
出来、かつハニカム体の耐熱酸化性を向上させることが
出来る。In the present invention, the joining portion by the brazing material
As the brazing material and brazing method used when forming (B), those known in the art may be adopted, and there is no particular limitation. For example, as the brazing material, a high-temperature brazing material, more specifically, Ni, Al, Cr, F
Any brazing material having a main component of e or a combination of these components may be used. In addition, Y, La, Ce, Ti, and Zr may be added to the above components, and a brazing material having improved thermal oxidation resistance may be used. In addition, as described above, in the case where the Al component is added to the strip material (1, 2) constituting the honeycomb body (A), when a Ni-based brazing material is used, Al and Ni in the base material are easily alloyed. As a result, the amount of Al 2 O 3 that gives rise to thermal oxidation resistance is reduced. From this point of view, a brazing material containing no Ni, for example, an Al-based brazing material is preferable. In this case, a brazing material having sufficient strength can be formed at a low temperature and the thermal oxidation resistance of the honeycomb body can be improved.
【００２１】本発明において、前記ろう材の適用方法と
しては、帯材(1,2) からハニカム体(A) とするときに、
予め帯材(1,2) の所望部位にろう材を適用するか、ある
いはハニカム体(A) としたあとに帯材(1,2) の当接部の
所望部位にろう材を適用しても良い。これらの方法によ
って、ろう材の形態として、ペースト状、粉末状、箔状
など最適のものを選択すけばよい。また、本発明におい
て、前記したろう材は、溶接時の高温により溶融し、図
示のように溶接による接合部位(W) の周囲にフィレット
を形成し、溶接とろう材により強固なハニカム体(A) が
得られることになる。In the present invention, as a method of applying the brazing material, when the strip material (1, 2) is formed into the honeycomb body (A),
Apply the brazing material to the desired part of the strip (1,2) in advance, or apply the brazing material to the desired part of the contact part of the strip (1,2) after forming the honeycomb body (A). Is also good. With these methods, the most suitable brazing material may be selected, such as paste, powder or foil. Further, in the present invention, the above brazing material is melted by the high temperature at the time of welding to form a fillet around the joint portion (W) by welding as shown in the figure, and the honeycomb body (A ) Will be obtained.
【００２２】[0022]
【発明の効果】本発明の排気ガス浄化用触媒を担持する
ためのハニカム体は、その構成部材である薄肉金属板製
の波板状帯材の単独、あるいは該波板状帯材と平板状帯
材の当接部の所望部位が、溶接による接合部位と該溶接
による接合部位の周囲のろう材による接合部位を有する
ことを特徴とするものである。即ち、本発明のハニカム
体は、ハニカム体を構成する帯材の当接部の所望部位
に、溶接による接合手段とろう材による接合手段を併用
して適用し、当接部を固着して製造されるものである。
従って、溶接とろう接の併用により強固な接合力が生じ
ることから、接合部位をハニカム体に印加される大きな
熱変形力や振動を考慮しつつ最小の部位に設定すること
ができる。前記した点と関連しつつ、本発明において、
従来の単独の接合手段の適用にみられる欠点、例えば溶
接単独における母材の劣化、ろう接単独におけるコスト
デメリットを解消することができ、耐久性でコストメリ
ットのあるハニカム体を提供することができる。The honeycomb body for carrying the exhaust gas purifying catalyst of the present invention is a constituent member of a corrugated strip material made of a thin metal plate, or a corrugated strip material and a flat plate shape. The desired portion of the abutting portion of the strip material is characterized by having a joint portion by welding and a joint portion by a brazing material around the joint portion by welding. That is, the honeycomb body of the present invention is manufactured by applying the joining means by welding and the joining means by brazing material together to a desired portion of the abutting portion of the strip material constituting the honeycomb body, and fixing the abutting portion. It is what is done.
Therefore, since a strong joining force is generated by the combined use of welding and brazing, the joining portion can be set to the minimum portion in consideration of the large thermal deformation force and vibration applied to the honeycomb body. In connection with the above point, in the present invention,
It is possible to solve the drawbacks found in the application of conventional single joining means, for example, deterioration of the base material in welding alone and cost disadvantages in brazing alone, and it is possible to provide a honeycomb body with durability and cost advantage. .
【図１】 ハニカム体を構成する帯材(1,2) の接合部位
を説明する図である。FIG. 1 is a diagram for explaining a joining portion of band members (1, 2) forming a honeycomb body.
【図２】 図１の点線指示部分の拡大図である。FIG. 2 is an enlarged view of a portion indicated by a dotted line in FIG.
【図３】 ハニカム体に対し、溶接による接合部位(W)
とろう材による接合部位(B) が適用される部位(W/B) の
一態様を説明する図である。[Fig. 3] Welded part (W) to the honeycomb body
It is a figure explaining one mode of the site | part (W / B) to which the joining site | part (B) by a brazing material is applied.
【図４】 ハニカム体に対し、溶接による接合部位(W)
とろう材による接合部位(B) が適用される部位(W/B) の
他の態様を説明する図である。[Fig. 4] Welded part (W) of honeycomb body
It is a figure explaining the other aspect of the site | part (W / B) to which the joining site | part (B) by a brazing material is applied.
【図５】 本発明の巻回タイプのハニカム体の正面図で
ある。FIG. 5 is a front view of a wound type honeycomb body of the present invention.
【図６】 本発明の積層タイプのハニカム体の正面図で
ある。FIG. 6 is a front view of a laminated type honeycomb body of the present invention.
Ａ………………ハニカム体 １………………平板状帯材 ２………………波板状帯材 ３………………排気ガス通気孔路（セル） ４………………ケーシング Ｗ、Ｗ1 ，Ｗ2 ・・・Ｗn ……………溶接による接合部
位 Ｂ、Ｂ1 ，Ｂ1 ´、Ｂ2 ，Ｂ2 ´・・・Ｂn ，Ｂn ´…
……………ろう材による接合部位A ……………… Honeycomb body 1 ……………… Flat plate strip 2 ……………… Corrugated strip strip 3 ……………… Exhaust gas vent hole (cell) 4 …… ………… Casing W, W 1 , W 2・ ・ ・ W n ……………… Welding joints B, B 1 , B 1 ′, B 2 , B 2 ′ ... B n , B n ′ …
…………… Brazed material joint
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２３Ｋ 101:02 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area // B23K 101: 02
Claims (6)
いは該波板状帯材と薄肉金属板製の平板状帯材を相互に
当接するように重積して製作した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、前記ハニカム体を
構成する前記波板状帯材同士の当接部、または前記波板
状帯材と平板状帯材の当接部の所望部位が、 (i) 溶接による接合部位、及び、 (ii)少なくとも前記溶接による接合部位の周囲のろう材
による接合部位、とから成るものであることを特徴とす
る排気ガス浄化用ハニカム体。1. Exhaust gas produced by using a corrugated strip made of a thin metal plate alone or by stacking the corrugated strip and a flat strip made of a thin metal plate so as to be in contact with each other. In the honeycomb body for carrying the purification catalyst, a desired portion of the contact portion between the corrugated strip members forming the honeycomb body, or the contact portion between the corrugated strip member and the flat strip member is An exhaust gas purifying honeycomb body, comprising: (i) a welded portion, and (ii) at least a welded portion around the welded portion.
よる接合部位の面積より大きいものである請求項１に記
載の排気ガス浄化用ハニカム体。2. The exhaust gas purifying honeycomb body according to claim 1, wherein the area of the joining portion by the brazing material is larger than the area of the joining portion by welding.
部位が、一致するものである請求項１に記載の排気ガス
浄化用ハニカム体。3. The exhaust gas purifying honeycomb body according to claim 1, wherein the welded joint portion and the brazing filler metal joint portion coincide with each other.
部位が、ハニカム体の一方の端部及びその近傍部位に存
在するものである請求項１または２に記載の排気ガス浄
化用ハニカム体。4. The exhaust gas purifying honeycomb body according to claim 1, wherein the welded joint portion and the brazing filler metal joint portion are present at one end of the honeycomb body and a portion in the vicinity thereof.
部位が、ハニカム体の両方の端部及びその近傍部位に存
在するものである請求項１または２に記載の排気ガス浄
化用ハニカム体。5. The exhaust gas purifying honeycomb body according to claim 1, wherein the welded joint portion and the brazing filler metal joint portion are present at both end portions of the honeycomb body and in the vicinity thereof.
抵抗溶接、レーザビーム溶接、電子ビーム溶接、プラズ
マビーム溶接の少なくとも１つで形成されたものである
請求項１または２に記載の排気ガス浄化用ハニカム体。6. The joining site by welding is spot welding,
The exhaust gas purifying honeycomb body according to claim 1 or 2, which is formed by at least one of resistance welding, laser beam welding, electron beam welding, and plasma beam welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4276746A JPH06106075A (en) | 1992-09-22 | 1992-09-22 | Honeycomb body for purification of exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4276746A JPH06106075A (en) | 1992-09-22 | 1992-09-22 | Honeycomb body for purification of exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06106075A true JPH06106075A (en) | 1994-04-19 |
Family
ID=17573767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4276746A Pending JPH06106075A (en) | 1992-09-22 | 1992-09-22 | Honeycomb body for purification of exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06106075A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100328601B1 (en) * | 1996-10-17 | 2002-03-15 | 베. 마우스; 베. 디트리히 | Method for producing a soldered metal honeycomb body |
| CN102744538A (en) * | 2012-06-11 | 2012-10-24 | 丁胜康 | Device for removing paste from wave crest for metal honeycomb carrier |
-
1992
- 1992-09-22 JP JP4276746A patent/JPH06106075A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100328601B1 (en) * | 1996-10-17 | 2002-03-15 | 베. 마우스; 베. 디트리히 | Method for producing a soldered metal honeycomb body |
| CN102744538A (en) * | 2012-06-11 | 2012-10-24 | 丁胜康 | Device for removing paste from wave crest for metal honeycomb carrier |
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