WO2005056183A1 - Exhaust gas purifying metal carrier-use laminate, production method for exhaust gas purifying metal carrier, exhaust gas purifying metal carrier and exhaust gas purifying filter - Google Patents

Exhaust gas purifying metal carrier-use laminate, production method for exhaust gas purifying metal carrier, exhaust gas purifying metal carrier and exhaust gas purifying filter Download PDF

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Publication number
WO2005056183A1
WO2005056183A1 PCT/JP2004/016402 JP2004016402W WO2005056183A1 WO 2005056183 A1 WO2005056183 A1 WO 2005056183A1 JP 2004016402 W JP2004016402 W JP 2004016402W WO 2005056183 A1 WO2005056183 A1 WO 2005056183A1
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WIPO (PCT)
Prior art keywords
exhaust gas
gas purifying
metal carrier
cylindrical
laminate
Prior art date
Application number
PCT/JP2004/016402
Other languages
French (fr)
Japanese (ja)
Inventor
Keiichi Shimizu
Yoshihide Tsuyama
Original Assignee
Toyo Kohan Co., Ltd.
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Publication date
Application filed by Toyo Kohan Co., Ltd. filed Critical Toyo Kohan Co., Ltd.
Priority to JP2005516068A priority Critical patent/JP3857299B2/en
Publication of WO2005056183A1 publication Critical patent/WO2005056183A1/en

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Classifications

    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F01N2330/04—Methods of manufacturing
    • 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
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • Laminate for exhaust gas purification metal carrier method for producing exhaust gas purification metal carrier, exhaust gas purification metal carrier and exhaust gas purification filter
  • the present invention relates to a stack for an exhaust gas purifying metal carrier used in an apparatus for purifying exhaust gas exhausted from the power of an internal combustion engine such as an automobile engine, a method for producing an exhaust gas purifying metal carrier, and a method thereof.
  • the present invention relates to an exhaust gas purification metal carrier and an exhaust gas purification filter produced using the same.
  • An exhaust gas purification device for an internal combustion engine such as an automobile engine or a generator has a cylindrical casing made of the same metal steel in a cylindrical casing made of a metal steel such as a heat-resistant stainless steel plate.
  • a metal carrier fitted with a cam body is used.
  • a conventional metal carrier having such a structure generally has a spiral shape in a state where a flat thin plate made of a strip-shaped metal thin plate and a corrugated thin plate laminated on the flat thin plate are stacked.
  • the her-cam body thus manufactured is inserted into a cylindrical metal casing, and then the contact portion between the flat and corrugated plate of the hollow body having the mesh cross section, and the nonicam body and the casing are joined. It is manufactured by joining by methods such as brazing, welding, and diffusion bonding.
  • an exhaust gas purification device having a purification function can be obtained by coating various catalysts.
  • Non-Patent Document 1 shows one mode in which a corrugated plate and a flat plate are joined using a laser.
  • the technique of Non-Patent Document 1 is to spot weld the contact point between a flat plate and a corrugated plate by controlling the irradiation condition timing of the laser.
  • there is a problem in terms of economy because the system is complicated and the joining speed is slow, so that productivity is poor.
  • Non-Patent Document 1 Japan Society for Automotive Engineers Academic Lecture Preprint No.102-98
  • the present invention aims to provide a component for an exhaust gas purification device comprising a hollow body having a mesh-like cross section and a method for producing the component as an inexpensive and easy method.
  • a method of manufacturing a laminate for an exhaust gas purifying metal carrier includes a laser from the outside of a laminate in a pair of laminates in which strip corrugated plates made of metal foil and strip flat plates made of metal foil are alternately stacked. A step of irradiating the band-shaped corrugated plate and the strip-shaped flat plate by irradiating with a single light. The step of bonding and the step of bonding to the laminate are repeated.
  • the method for producing an exhaust gas purifying metal carrier according to claim 2 is characterized in that a cylindrical shape is formed by winding a pair of laminates in which strip-like corrugated plates made of metal foil and strip-like flat plates made of metal foil are alternately stacked.
  • a laser beam is irradiated from the outer surface of the laminate to the center of the cylindrical laminate to melt the portion of the metal foil irradiated with the laser beam, and the inside of the strip plate and the inner strip corrugated plate 2—characterized by joining or opening several layers.
  • the metal foil is preferably a heat-resistant stainless steel foil having a thickness of 30 to 150 m. Further, it is desirable that the laser light irradiation is performed continuously. Furthermore, it is desirable to irradiate one or more laser beams on one surface.
  • the exhaust gas purifying metal carrier according to claim 6 is manufactured by using the method for manufacturing an exhaust gas purifying metal carrier according to any one of the above items.
  • An exhaust gas purifying filter according to claim 7 is formed by loading the exhaust gas purifying metal carrier according to claim 6 in a cylindrical case, joining the cylindrical casing, and further covering the purifying catalyst.
  • An exhaust gas purifying filter according to claim 8 is formed by joining the exhaust gas purifying metal support according to claim 6 and a cylindrical cylindrical body only at one end in the axial direction, and further covering the purifying catalyst. It is characterized by.
  • the exhaust gas purifying filter according to claim 9 is the exhaust gas purifying metal carrier according to claim 6 is loaded into the cylindrical cylinder, and then the one end of the cylindrical cylinder is reduced in diameter.
  • the exhaust gas purifying metal carrier and the cylindrical cylinder are joined only to the end, and the purifier catalyst is further coated.
  • An exhaust gas purifying filter according to claim 10 is the exhaust gas purifying metal carrier according to claim 6, wherein the exhaust gas purifying metal carrier is loaded into a cylindrical cylindrical body, the both ends of the cylindrical cylindrical body are reduced in diameter, and the purification catalyst is further reduced. It is characterized by being coated.
  • An exhaust gas purifying filter according to claim 11 is characterized in that the laminate manufactured by the method for manufacturing a laminate for exhaust gas purification metal carrier according to claim 1 is fitted into a rectangular case. To do.
  • FIG. 1 is a schematic view of a production method of the present invention.
  • Fig. 2 is a view showing one embodiment before the strip corrugated plate and the strip flat plate of the present invention are cut off.
  • 1 is a metal carrier
  • 2 is a strip corrugated plate
  • 3 is a strip plate
  • 4 is a laser
  • 5 is a frame
  • 6 is a receiving roll
  • 8 is a spring
  • 9 is a belt.
  • 11 represents a pinch roller
  • 13 represents a torque motor.
  • the exhaust gas purifying metal carrier 1 of the present invention is mainly used as a carrier or a filter in an apparatus for purifying exhaust gas discharged from an internal combustion engine such as an automobile engine.
  • the basic configuration is used by inserting a cylindrical shape into a cylindrical cylindrical body having a metal plate force as described in the prior art.
  • the exhaust gas purifying filter 1 of the present invention includes the exhaust gas purifying metal carrier 1 produced by the above-described manufacturing method, fitted into a cylindrical cylinder, joined to the cylindrical cylinder, and then purified. It is configured to be coated with a catalyst.
  • the belt-like corrugated sheet 2 that is also fed with tension by the spring 8 and the sheet-like flat plate 3 that is also fed with the metal foil passing through the pinch roller 11 are received by the receiving rule.
  • laser 4 is irradiated from the outer surface of the cylindrical laminate toward the center of the cylindrical laminate, and the metal foil irradiated with laser 4 is irradiated. While melting the above part, two or several layers of the strip plate and the strip corrugated plate in the inner layer are joined or opened.
  • the rotation speed can be controlled by a speed control motor. Winding is rolled up in a cylindrical shape according to the size of the exhaust gas purification metal carrier 1, and the unwound portion and the cylindrical portion are cut off in the corrugated sheet 2 and the strip-shaped flat plate 3. To do.
  • the belt-like corrugated plate 2 and the strip-like flat plate 3 were wound by rotating the belt 9 with a torque motor 13.
  • the arrows on the belt-like flat plate, the belt-like corrugated plate, the pinch roller, the metal carrier and the belt indicate the rotational direction or the traveling direction.
  • the corrugated plate 2 and the strip 3 are bonded to each other where the strip 2 and the strip 3 are in contact with each other. Further, the portions where the strip corrugated plate 2 and the strip flat plate 3 are separated from each other are opened. Thus, during laser irradiation, bonding or opening can be performed simultaneously due to the difference in the distance between the strip corrugated plate 2 and the strip flat plate 3.
  • the strip corrugated plate 2 and the strip flat plate 3 are preferably heat-resistant stainless steel copper foil having a thickness of 30 to 150 m. If it is less than 30 / z m, it will be deformed by heat when it is heated to a high temperature during use, and will not function as the exhaust gas purifying metal carrier 1.
  • the laser light irradiation be performed discontinuously.
  • the irradiation be performed at an interval of 20 to 200 mm from the objective lens. If it is less than 20 mm, the distance is too short and the optical system such as the lens is easily damaged by the heat from laser irradiation or reflected laser light.
  • the irradiation position (focal position) becomes unstable due to vibrations, etc., and the bonding becomes difficult to stabilize.
  • laser 4 It is desirable to irradiate laser 4 simultaneously with one or more. This is appropriately selected depending on the size of the exhaust gas purifying metal carrier 1. In addition, by increasing the laser output, laser transmission is not performed at all, and intermittent laser irradiation is performed every cycle. It may be welded.
  • the exhaust gas purifying metal carrier 1 manufactured as described above is loaded into a cylindrical cylinder, joined to the cylindrical cylinder by laser welding, and further coated with a purification catalyst.
  • the exhaust gas purifying metal carrier 1 joins the end of a cylindrical tube. Further, the exhaust gas purifying metal carrier 1 may be loaded into a cylindrical cylinder and the diameter of one side of the cylindrical cylinder may be reduced as necessary. Further, when the heat load force S of the exhaust gas filter is small, the exhaust gas purification metal carrier and the cylindrical cylinder play a role without being separated by reducing the diameter of both ends of the cylindrical cylinder. By joining only one side, the stress acting on the joint is greatly reduced.
  • Figure 2 shows the case where four layers are wound up simultaneously. Force bonding is possible and efficient.
  • a metal carrier having a good shape can be obtained by applying a constant pressure from the upper surface of the plate, irradiating one to several laser beams, and joining them. Basically, it is not necessary to braze, but it is possible to go to a part of the end face as needed.
  • a known catalyst can be used. For example, a catalyst in which a catalyst such as platinum or noradium is supported on a support layer made of active alumina can be used.
  • the exhaust gas purification filter manufactured according to the present invention showed sufficient purification performance with no problem with respect to pressure loss.
  • the joining method that does not require expensive brazing which is a conventional joining method, is extremely simple, and is economical at high speed and high productivity.
  • the general Ni brazing material is not used as the brazing material, so it is desirable in terms of the environment. Since the joint is close to a point joint, the shape where the thermal stress of the joint is low even when exposed to high temperatures is extremely difficult to collapse.
  • the metal foil since the metal foil has through-holes, the exhaust gas flow path becomes longer and the purification performance is improved. Therefore, if the same purification performance is used, the length of the filter can be shortened and the weight can be reduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processing Of Solid Wastes (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Filtering Materials (AREA)

Abstract

A production method for an exhaust gas purifying metal carrier excellent in productivity, an exhaust gas purifying metal carrier and an exhaust gas purifying device. The production method for an exhaust gas purifying metal carrier (1) comprises the steps of applying a laser beam from the outer surface of the cylindrical laminates toward the center of the laminates while at least one pair of laminates of alternately overlapping metal-foil band-like corrugated sheets (2) and metal-foil band-like flat sheets (3) are taken up in a cylindrical shape, and fusing portions of metal foil irradiated with a laser beam to bond two-several layers of band-like flat sheet and inner-layer band-like corrugated sheet together or make holes in them.

Description

明 細 書  Specification
排気ガス浄化メタル担体用積層物、排気ガス浄化メタル担体の製造方法 、排気ガス浄化メタル担体および排気ガス浄化フィルター  Laminate for exhaust gas purification metal carrier, method for producing exhaust gas purification metal carrier, exhaust gas purification metal carrier and exhaust gas purification filter
技術分野  Technical field
[0001] 本発明は、自動車のエンジン等の内燃機関力 排出される排ガスを浄ィ匕する装置 に用いる排気ガス浄化メタル担体用積層物、排気ガス浄化メタル担体の製造方法、 その方法を使用してなる排気ガス浄化メタル担体およびそれを用いて製造した排気 ガス浄ィ匕フィルターに関する。  [0001] The present invention relates to a stack for an exhaust gas purifying metal carrier used in an apparatus for purifying exhaust gas exhausted from the power of an internal combustion engine such as an automobile engine, a method for producing an exhaust gas purifying metal carrier, and a method thereof. The present invention relates to an exhaust gas purification metal carrier and an exhaust gas purification filter produced using the same.
背景技術  Background art
[0002] 自動車のエンジンや発電機等の内燃機関の排ガス浄ィ匕装置には、耐熱性のステン レス鋼板等の金属鋼からなる円筒状のケーシング内に、同金属鋼材からなる円柱状 のハ-カム体を嵌入したメタル担体が使用されて 、る。  [0002] An exhaust gas purification device for an internal combustion engine such as an automobile engine or a generator has a cylindrical casing made of the same metal steel in a cylindrical casing made of a metal steel such as a heat-resistant stainless steel plate. -A metal carrier fitted with a cam body is used.
[0003] このような構成の従来のメタル担体は、一般的には、帯状の金属薄板からなる平薄 板と、この平薄板に波付け加工した波薄板とを重ねた状態で渦巻き状に卷取って製 造したハ-カム体を、円筒状の金属ケーシングに嵌入し、その後、前記網目状断面 を有する有空体の平薄板と波薄板との接触部、およびノヽニカム体とケーシングとを蝌 付け、溶接、拡散接合などの方法により接合して製造されている。更に、各種の触媒 をコートして、浄化機能を有する排ガス浄ィ匕装置とされる。  [0003] A conventional metal carrier having such a structure generally has a spiral shape in a state where a flat thin plate made of a strip-shaped metal thin plate and a corrugated thin plate laminated on the flat thin plate are stacked. The her-cam body thus manufactured is inserted into a cylindrical metal casing, and then the contact portion between the flat and corrugated plate of the hollow body having the mesh cross section, and the nonicam body and the casing are joined. It is manufactured by joining by methods such as brazing, welding, and diffusion bonding. Furthermore, an exhaust gas purification device having a purification function can be obtained by coating various catalysts.
従来、蠟材を用いない方法として、非特許文献 1にはレーザーを用い、波板と平板 を接合する 1態様が示されている。非特許文献 1の技術は、平板と波板の接点をレー ザ一の照射条件タイミングを制御しスポット的に溶接するものである。しかし、システム が複雑で、接合速度も遅ぐ生産性が悪いため、経済性の点で問題がある。  Conventionally, as a method not using a brazing material, Non-Patent Document 1 shows one mode in which a corrugated plate and a flat plate are joined using a laser. The technique of Non-Patent Document 1 is to spot weld the contact point between a flat plate and a corrugated plate by controlling the irradiation condition timing of the laser. However, there is a problem in terms of economy because the system is complicated and the joining speed is slow, so that productivity is poor.
[0004] 本出願に関する先行技術文献情報として次のものがある。  [0004] Prior art document information relating to the present application includes the following.
非特許文献 1 :社団法人自動車技術会 学術講演会前刷り No.102-98  Non-Patent Document 1: Japan Society for Automotive Engineers Academic Lecture Preprint No.102-98
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] し力しながら、従来の蠟材を用いて真空熱処理し接合する製造方法においては、 高価な蝌材および真空熱処理炉を必要とすること、蝌材塗布ならびに熱処理炉での 接合など工程数が多ぐ生産性が悪いことなどにより低コスト化は限界があった。 [0005] In a manufacturing method in which the heat treatment is performed by vacuum heat treatment using a conventional brazing material, Cost reduction was limited due to the need for expensive brazing materials and vacuum heat treatment furnaces, the number of processes such as coating of brazing materials and bonding in heat treatment furnaces, and poor productivity.
[0006] また、蝌材により接合したメタル担体では、実走行でメタル担体が高温にさらされた 場合、その接合強度が十分でないことから、熱応力により接合部が分離し、排気圧力 によりタケノコ状 (一方方向に突出した形状）に変形する欠陥が生じることがあり、問 題視されている。  [0006] Further, in the metal carrier joined by the brazing material, when the metal carrier is exposed to high temperature in actual running, the joining strength is not sufficient. Defects that deform in one direction (shape protruding in one direction) may occur and are regarded as problems.
[0007] そこで、本発明は、網目状断面を有する有空体からなる排ガス浄化装置用部品並 びにその製造方法を安価且つ容易なものとして提供す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  [0007] In view of the above, the present invention aims to provide a component for an exhaust gas purification device comprising a hollow body having a mesh-like cross section and a method for producing the component as an inexpensive and easy method. Means
[0008] 排気ガス浄化メタル担体用積層物の製造方法は、金属箔からなる帯状波板および 金属箔からなる帯状平板を交互に重ねた 1対以上の積層物に、積層物の外からレー ザ一光を照射して前記帯状波板と前記帯状平板を接合する工程、っ ヽでその上面 に帯状平板と帯状波板を交互に 1枚以上積層した後、レーザー光を照射し、積層物 に接合する工程、前記積層物に接合する工程を繰り返すことを特徴とする。  [0008] A method of manufacturing a laminate for an exhaust gas purifying metal carrier includes a laser from the outside of a laminate in a pair of laminates in which strip corrugated plates made of metal foil and strip flat plates made of metal foil are alternately stacked. A step of irradiating the band-shaped corrugated plate and the strip-shaped flat plate by irradiating with a single light. The step of bonding and the step of bonding to the laminate are repeated.
請求項 2記載の排気ガス浄化メタル担体の製造方法は、金属箔からなる帯状波板 および金属箔カ なる帯状平板を交互に重ねた 1対以上の積層物を円筒状に巻き 込みながら、円筒状の積層物の外表面から円筒状の積層物の中心方向にレーザー 光を照射して、レーザー光の照射された金属箔の箇所を溶解し、帯状平板とその内 層にある帯状波板の内 2—数層を接合するかあるいは開口してなることを特徴とする 。この場合、前記金属箔が厚み 30— 150 mの耐熱ステンレス鋼箔であることが望 ましい。また、前記レーザー光の照射が非連続的で行われることが望ましい。さらに、 一つの面にレーザー光は 1条あるいは複数条照射することが望まし 、。  The method for producing an exhaust gas purifying metal carrier according to claim 2 is characterized in that a cylindrical shape is formed by winding a pair of laminates in which strip-like corrugated plates made of metal foil and strip-like flat plates made of metal foil are alternately stacked. A laser beam is irradiated from the outer surface of the laminate to the center of the cylindrical laminate to melt the portion of the metal foil irradiated with the laser beam, and the inside of the strip plate and the inner strip corrugated plate 2—characterized by joining or opening several layers. In this case, the metal foil is preferably a heat-resistant stainless steel foil having a thickness of 30 to 150 m. Further, it is desirable that the laser light irradiation is performed continuously. Furthermore, it is desirable to irradiate one or more laser beams on one surface.
[0009] 請求項 6の排気ガス浄化メタル担体は、前記のいずれカゝ 1項の排気ガス浄化メタル 担体の製造方法を用いて製造することを特徴とする。  [0009] The exhaust gas purifying metal carrier according to claim 6 is manufactured by using the method for manufacturing an exhaust gas purifying metal carrier according to any one of the above items.
請求項 7の排気ガス浄ィ匕フィルタ一は、請求項 6記載の排気ガス浄化メタル担体を 、円筒状ケースに装填、円筒状筒体と接合し、更に浄ィ匕触媒を被覆してなることを特 徴とする。 請求項 8記載の排気ガス浄ィ匕フィルタ一は、請求項 6記載の排気ガス浄化メタル担 体と円筒状筒体とを軸方向の片側端部のみにおいて接合し、更に浄ィ匕触媒を被覆 してなることを特徴とする。 An exhaust gas purifying filter according to claim 7 is formed by loading the exhaust gas purifying metal carrier according to claim 6 in a cylindrical case, joining the cylindrical casing, and further covering the purifying catalyst. Features. An exhaust gas purifying filter according to claim 8 is formed by joining the exhaust gas purifying metal support according to claim 6 and a cylindrical cylindrical body only at one end in the axial direction, and further covering the purifying catalyst. It is characterized by.
請求項 9記載の排気ガス浄ィ匕フィルタ一は、請求項 6記載の排気ガス浄化メタル担 体を、円筒状筒体に装填後、円筒状筒体の片側端部を縮径し、縮径した端部のみ 排気ガス浄化メタル担体と円筒状筒体を接合し、更に浄ィ匕触媒を被覆してなることを 特徴とする。  The exhaust gas purifying filter according to claim 9 is the exhaust gas purifying metal carrier according to claim 6 is loaded into the cylindrical cylinder, and then the one end of the cylindrical cylinder is reduced in diameter. The exhaust gas purifying metal carrier and the cylindrical cylinder are joined only to the end, and the purifier catalyst is further coated.
請求項 10記載の排気ガス浄ィ匕フィルタ一は、請求項 6記載の排気ガス浄化メタル 担体を、円筒状筒体に装填後、円筒状筒体の両側端部を縮径し、更に浄化触媒を 被覆してなることを特徴とする。  An exhaust gas purifying filter according to claim 10 is the exhaust gas purifying metal carrier according to claim 6, wherein the exhaust gas purifying metal carrier is loaded into a cylindrical cylindrical body, the both ends of the cylindrical cylindrical body are reduced in diameter, and the purification catalyst is further reduced. It is characterized by being coated.
請求項 11記載の排気ガス浄ィ匕フィルタ一は、請求項 1に記載の排気ガス浄化メタ ル担体用積層物の製造方法で製造した積層物を角形ケースに嵌入してなることを特 徴とする。  An exhaust gas purifying filter according to claim 11 is characterized in that the laminate manufactured by the method for manufacturing a laminate for exhaust gas purification metal carrier according to claim 1 is fitted into a rectangular case. To do.
図面の簡単な説明  Brief Description of Drawings
[0010] [図 1]図 1は、本発明の製造方法の概略図である。 FIG. 1 is a schematic view of a production method of the present invention.
[図 2]図 2は、本発明の帯状波板と帯状平板とを卷取前の 1つの実施態様を示す図で ある。 図中の符号については、 1はメタル担体を、 2は帯状波板を、 3は帯状平板を 、 4はレーザーを、 5はフレームを、 6は受けロールを、 8はスプリングを、 9はベルトを、 11はピンチローラーを、 13はトルクモーターをそれぞれ表す。  [Fig. 2] Fig. 2 is a view showing one embodiment before the strip corrugated plate and the strip flat plate of the present invention are cut off. In the figure, 1 is a metal carrier, 2 is a strip corrugated plate, 3 is a strip plate, 4 is a laser, 5 is a frame, 6 is a receiving roll, 8 is a spring, and 9 is a belt. , 11 represents a pinch roller, and 13 represents a torque motor.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0011] 本発明の排気ガス浄化メタル担体 1は、主に、自動車のエンジン等の内燃機関から 排出される排ガスを浄ィ匕するための装置に、担体やフィルタとして用いられるもので ある。その基本的な構成は、従来例において記載したような金属板力もなる円筒状の 円筒状筒体内に円柱形状で嵌入して用いられる。 [0011] The exhaust gas purifying metal carrier 1 of the present invention is mainly used as a carrier or a filter in an apparatus for purifying exhaust gas discharged from an internal combustion engine such as an automobile engine. The basic configuration is used by inserting a cylindrical shape into a cylindrical cylindrical body having a metal plate force as described in the prior art.
[0012] そして、本発明の排気ガス浄ィ匕フィルタ一は、前述の製造方法によって作製された 前記排気ガス浄化メタル担体 1を円筒状筒体内に嵌入し、円筒状筒体に接合後、浄 化触媒を被覆した構成とされて 、る。  [0012] Then, the exhaust gas purifying filter 1 of the present invention includes the exhaust gas purifying metal carrier 1 produced by the above-described manufacturing method, fitted into a cylindrical cylinder, joined to the cylindrical cylinder, and then purified. It is configured to be coated with a catalyst.
[0013] 次に、本発明の排気ガス浄化メタル担体の実施形態について、図 1を用いて説明 する。図 1に示すように、スプリング 8で張力を付加しながら送られてきた金属箔カもな る帯状波板 2とピンチローラー 11を通ってきた金属箔カもなる帯状平板 3を、受け口 ール 6で押さえつつ、交互に円筒状に重ねて巻き取る際に、円筒状の積層物の外表 面から円筒状の積層物の中心方向にレーザー 4を照射して、レーザー 4の照射され た金属箔の箇所を溶解しながら、帯状平板とその内層にある帯状波板の内 2—数層 を接合するかあるいは開口する。巻き取りは図には図示しないが、スピードコントロー ルモーターにより、回転速度を制御することができる。巻き取りは、排気ガス浄化メタ ル担体 1の大きさに合わせて、円筒状に重ね巻き取り、帯状波板 2と帯状平板 3にお いて、巻き取られてない部分と円筒状部分とを切断する。帯状波板 2と帯状平板 3の 巻き取りは、トルクモーター 13によりベルト 9を回転させることにより行った。図 1にお いて、帯状平板、帯状波板、ピンチローラー、メタル担体及びベルトに記載してある 矢印は回転方向あるいは進行方向を示す。 Next, an embodiment of the exhaust gas purifying metal carrier of the present invention will be described with reference to FIG. To do. As shown in Fig. 1, the belt-like corrugated sheet 2 that is also fed with tension by the spring 8 and the sheet-like flat plate 3 that is also fed with the metal foil passing through the pinch roller 11 are received by the receiving rule. When pressing and holding in step 6 and alternately winding in a cylindrical shape, laser 4 is irradiated from the outer surface of the cylindrical laminate toward the center of the cylindrical laminate, and the metal foil irradiated with laser 4 is irradiated. While melting the above part, two or several layers of the strip plate and the strip corrugated plate in the inner layer are joined or opened. Although the winding is not shown in the figure, the rotation speed can be controlled by a speed control motor. Winding is rolled up in a cylindrical shape according to the size of the exhaust gas purification metal carrier 1, and the unwound portion and the cylindrical portion are cut off in the corrugated sheet 2 and the strip-shaped flat plate 3. To do. The belt-like corrugated plate 2 and the strip-like flat plate 3 were wound by rotating the belt 9 with a torque motor 13. In FIG. 1, the arrows on the belt-like flat plate, the belt-like corrugated plate, the pinch roller, the metal carrier and the belt indicate the rotational direction or the traveling direction.
レーザー 4照射の際、帯状波板 2と帯状平板 3とが接しているか、双方の板が極近 接している箇所は、帯状波板 2と帯状平板 3を接合させる。また、帯状波板 2と帯状平 板 3とが離れている箇所は、双方とも開口させる。このように、レーザー照射の際、帯 状波板 2と帯状平板 3との間隔の違いによって接合あるいは開口を同時に行うことが できる。前記帯状波板 2と帯状平板 3の厚み 30— 150 mの耐熱ステンレス銅箔で あることが望ましい。 30 /z m未満では、使用時、高温に加熱された際、熱により変形 し、排気ガス浄化メタル担体 1として機能しなくなる。一方、 150 mを超えても適用 できるが、高出力のレーザーが必要であり、接合あるいは開口する速度が遅くなり不 経済である。さらに、前記レーザー光の照射が非連続的で行われることが望ましい。 例えば、照射は対物レンズから 20— 200mmの間隔を開けて行うことが望ましい。 20 mm未満では、距離が近すぎて、レーザー照射による熱あるいは反射レーザー光に よりレンズなどの光学系装置が損傷を受けやすい。一方、 200mmを超えると、振動 などにより、照射位置 (焦点位置)が不安定となり、接合が安定しがたくなる。  When the laser 4 is irradiated, the corrugated plate 2 and the strip 3 are bonded to each other where the strip 2 and the strip 3 are in contact with each other. Further, the portions where the strip corrugated plate 2 and the strip flat plate 3 are separated from each other are opened. Thus, during laser irradiation, bonding or opening can be performed simultaneously due to the difference in the distance between the strip corrugated plate 2 and the strip flat plate 3. The strip corrugated plate 2 and the strip flat plate 3 are preferably heat-resistant stainless steel copper foil having a thickness of 30 to 150 m. If it is less than 30 / z m, it will be deformed by heat when it is heated to a high temperature during use, and will not function as the exhaust gas purifying metal carrier 1. On the other hand, it can be applied even if it exceeds 150 m, but a high-power laser is required, and the bonding or opening speed becomes slow, which is uneconomical. Furthermore, it is desirable that the laser light irradiation be performed discontinuously. For example, it is desirable that the irradiation be performed at an interval of 20 to 200 mm from the objective lens. If it is less than 20 mm, the distance is too short and the optical system such as the lens is easily damaged by the heat from laser irradiation or reflected laser light. On the other hand, if it exceeds 200 mm, the irradiation position (focal position) becomes unstable due to vibrations, etc., and the bonding becomes difficult to stabilize.
レーザー 4は 1条あるいは複数条、同時に照射する方が望ましい。これは、排気ガス 浄化メタル担体 1の大きさにより適宜選択する。また、レーザー出力を強くすることに より、レーザー発信を 1周全く行わず、 1周毎に間欠的に、非連続レーザーを照射し 溶接しても良い。 It is desirable to irradiate laser 4 simultaneously with one or more. This is appropriately selected depending on the size of the exhaust gas purifying metal carrier 1. In addition, by increasing the laser output, laser transmission is not performed at all, and intermittent laser irradiation is performed every cycle. It may be welded.
以上のように製造した排気ガス浄化メタル担体 1は、円筒状筒体に装填、円筒状筒 体とレーザー溶接により接合し、更に浄ィ匕触媒を被覆する。排気ガス浄化メタル担体 The exhaust gas purifying metal carrier 1 manufactured as described above is loaded into a cylindrical cylinder, joined to the cylindrical cylinder by laser welding, and further coated with a purification catalyst. Exhaust gas purification metal carrier
1は、円筒状筒体の端部を接合する。また、排気ガス浄化メタル担体 1は、円筒状筒 体に装填し、必要に応じ円筒状筒体の片側を縮径してもよい。また、排気ガス浄ィ匕フ ィルターの熱負荷力 S小さい場合は、円筒状筒体の両端部を縮径することにより排気 ガス浄化メタル担体と円筒状筒体は分離することなく役割を果たす。片側だけ接合す ることにより接合部に作用する応力は大幅に低減されることになる。 1 joins the end of a cylindrical tube. Further, the exhaust gas purifying metal carrier 1 may be loaded into a cylindrical cylinder and the diameter of one side of the cylindrical cylinder may be reduced as necessary. Further, when the heat load force S of the exhaust gas filter is small, the exhaust gas purification metal carrier and the cylindrical cylinder play a role without being separated by reducing the diameter of both ends of the cylindrical cylinder. By joining only one side, the stress acting on the joint is greatly reduced.
[0015] なお、本発明は、前述した実施の形態に限定されるものではなぐ必要に応じて種 々の変更が可能である。図 2に同時に 4層を巻き取る場合を示す力 接合は可能で あり、効率的である。また、円筒状以外の態様として、平板、波板を交互に積層し、積 層断面が角形になるよう接合することも可能である。その場合、板の上面から一定圧 で加圧し、一条ー数条レーザー照射し、接合することにより形状の良い、メタル担体 が得られる。基本的には蠟付けはしなくてもよいが、端面の一部に必要に応じて行つ ても差し支えない。また、触媒は公知のものを使用することができ、例えば活性アルミ ナからなる担持層に、白金、ノラジウムなどの触媒を担持させたものを使用することが できる。  Note that the present invention is not limited to the above-described embodiments, and various modifications can be made as necessary. Figure 2 shows the case where four layers are wound up simultaneously. Force bonding is possible and efficient. Moreover, as an aspect other than the cylindrical shape, it is possible to alternately laminate flat plates and corrugated plates and join them so that the cross-section of the stacked layers is square. In that case, a metal carrier having a good shape can be obtained by applying a constant pressure from the upper surface of the plate, irradiating one to several laser beams, and joining them. Basically, it is not necessary to braze, but it is possible to go to a part of the end face as needed. A known catalyst can be used. For example, a catalyst in which a catalyst such as platinum or noradium is supported on a support layer made of active alumina can be used.
[0016] 本発明により製造した排気ガス浄ィ匕フィルタ一は、圧力損失に関しても問題なぐ 十分な浄化性能を示した。  [0016] The exhaust gas purification filter manufactured according to the present invention showed sufficient purification performance with no problem with respect to pressure loss.
産業上の利用可能性  Industrial applicability
[0017] 本発明は、従来の接合方法である高価な蠟付けを行う必要がなぐ接合の仕方が 極めて簡単であり、高速で生産性が高ぐ経済的である。また、ろう材として一般的な Niろう材を使用しな 、ため環境面でも望ま 、。接合が点接合に近 、ため高温にさ らされても接合部の熱応力が低ぐ形状が極めて崩れにくいものである。また、金属 箔が貫通孔を有することから排気ガスの流路が長くなり、浄ィ匕性能が向上する。従つ て同じ浄ィ匕性能であれば、フィルターの長さが短くでき、軽量化しうる特徴も有する。  [0017] According to the present invention, the joining method that does not require expensive brazing, which is a conventional joining method, is extremely simple, and is economical at high speed and high productivity. In addition, the general Ni brazing material is not used as the brazing material, so it is desirable in terms of the environment. Since the joint is close to a point joint, the shape where the thermal stress of the joint is low even when exposed to high temperatures is extremely difficult to collapse. In addition, since the metal foil has through-holes, the exhaust gas flow path becomes longer and the purification performance is improved. Therefore, if the same purification performance is used, the length of the filter can be shortened and the weight can be reduced.

Claims

請求の範囲 The scope of the claims
[1] 金属箔カ なる帯状波板および金属箔カ なる帯状平板を交互に重ねた 1対以上 の積層物に、積層物の外からレーザー光を照射して前記帯状波板と前記帯状平板 を接合する工程、ついでその上面に帯状平板と帯状波板を交互に 1枚以上積層した 後、レーザー光を照射し、積層物に接合する工程、前記積層物に接合する工程を繰 り返すことを特徴とする排気ガス浄化メタル担体用積層物の製造方法  [1] A pair of laminates obtained by alternately laminating strips made of metal foil and strips made of metal foil are irradiated with laser light from the outside of the laminate to form the strips and the strips. A step of joining, and then laminating one or more strips and corrugated plates alternately on the upper surface, and then irradiating with laser light to join the laminate and repeating the step of joining to the laminate. Manufacturing method of laminate for exhaust gas purifying metal carrier
[2] 金属箔カ なる帯状波板および金属箔カ なる帯状平板を交互に重ねた 1対以上 の積層物を円筒状に巻き取りながら、円筒状の積層物の外表面から円筒状の積層 物の中心方向にレーザー光を照射して、レーザー光の照射された金属箔の箇所を 溶解し、帯状平板とその内層にある帯状波板の内 2—数層を接合するかある!/ヽは開 口してなる排気ガス浄化メタル担体の製造方法。  [2] Cylindrical laminate from the outer surface of the cylindrical laminate, winding up one or more pairs of laminated corrugated sheets of metal foil and strips of metal foil that are rolled up in a cylindrical shape Irradiate a laser beam in the center direction of the metal, melt the portion of the metal foil irradiated with the laser beam, and join two or several layers of the strip plate and the strip corrugated plate in its inner layer! A method for producing an exhaust gas purifying metal carrier that is opened.
[3] 前記金属箔が厚み 30— 150 μ mの耐熱ステンレス鋼箔である請求項 2に記載の排 気ガス浄化メタル担体の製造方法。 [3] The method for producing an exhaust gas purifying metal carrier according to claim 2, wherein the metal foil is a heat-resistant stainless steel foil having a thickness of 30 to 150 μm.
[4] 前記レーザー光の照射が非連続的で行われることを特徴とする請求項 2乃至 3の いずれか 1項記載の排気ガス浄化メタル担体の製造方法。 4. The method for producing an exhaust gas purifying metal carrier according to any one of claims 2 to 3, wherein the laser light irradiation is performed discontinuously.
[5] 請求項 2乃至 4のいずれか 1項のメタル担体の製造方法において、上下平面の少 なくとも一つの面にレーザー光を 1条あるいは複数条照射することを特徴とする排気 ガス浄化メタル担体の製造方法。 [5] The method for producing a metal carrier according to any one of claims 2 to 4, wherein at least one of the upper and lower planes is irradiated with one or more laser beams. A method for producing a carrier.
[6] 請求項 2乃至 5の 、ずれか 1項の排気ガス浄化メタル担体の製造方法を用いて製 造してなる排気ガス浄化メタル担体。 [6] An exhaust gas purification metal carrier produced by using the method for producing an exhaust gas purification metal carrier according to any one of claims 2 to 5.
[7] 請求項 6記載の排気ガス浄化メタル担体を、円筒状筒体に装填、円筒状筒体と接 合し、更に浄ィ匕触媒を被覆してなることを特徴とする排気ガス浄ィ匕フィルター。 [7] The exhaust gas purifying metal carrier according to claim 6 is loaded into a cylindrical cylinder, joined to the cylindrical cylinder, and further coated with a purification catalyst.匕 Filter.
[8] 請求項 6記載の排気ガス浄化メタル担体と円筒状筒体とを軸方向の片側端部のみ にお ヽて接合し、更に浄ィ匕触媒を被覆してなることを特徴とする排気ガス浄ィ匕フィル ター。 [8] Exhaust gas characterized in that the exhaust gas purifying metal carrier according to claim 6 and the cylindrical tube body are joined to only one end portion in the axial direction and further coated with a purifying catalyst. Gas purification filter.
[9] 請求項 6記載の排気ガス浄化メタル担体を、円筒状筒体に装填後、円筒状筒体の 片側端部を縮径し、縮径した端部のみ排気ガス浄化メタル担体と円筒状筒体を接合 し、更に浄ィ匕触媒を被覆してなることを特徴とする排気ガス浄ィ匕フィルター。 [9] After the exhaust gas purifying metal carrier according to claim 6 is loaded into a cylindrical cylinder, one end of the cylindrical cylinder is reduced in diameter, and the exhaust gas purifying metal carrier and the cylindrical shape are reduced only at the reduced end. An exhaust gas purification filter comprising a cylinder joined and further coated with a purification catalyst.
[10] 請求項 6記載の排気ガス浄化メタル担体を、円筒状筒体に装填後、円筒状筒体の 両側端部を縮径し、更に浄ィ匕触媒を被覆してなることを特徴とする排気ガス浄ィ匕フィ ルター。 [10] The exhaust gas purifying metal carrier according to claim 6, wherein the exhaust gas purifying metal carrier is loaded into a cylindrical cylindrical body, the both end portions of the cylindrical cylindrical body are reduced in diameter, and the purification catalyst is further coated. Exhaust gas purification filter.
[11] 請求項 1に記載の排気ガス浄化メタル担体用積層物の製造方法で製造した積層物 を角形ケースに嵌入してなる排気ガス浄ィ匕フィルター  [11] An exhaust gas purifying filter formed by fitting a laminate produced by the method for producing a laminate for an exhaust gas purifying metal carrier according to claim 1 into a square case
PCT/JP2004/016402 2003-12-12 2004-11-05 Exhaust gas purifying metal carrier-use laminate, production method for exhaust gas purifying metal carrier, exhaust gas purifying metal carrier and exhaust gas purifying filter WO2005056183A1 (en)

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CN1894040A (en) 2007-01-10
CN100444962C (en) 2008-12-24
TW200518836A (en) 2005-06-16
JP3857299B2 (en) 2006-12-13
TWI317302B (en) 2009-11-21
JPWO2005056183A1 (en) 2007-07-05

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