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1. 发明专利

JPH07324618A EXHAUST EMISSION CONTROL CATALYST DEVICE OF ENGINE 失效
公开(公告)号：JPH07324618A
公开(公告)日：1995-12-12
申请号：JP14112194
申请日：1994-05-30
申请人： NIPPON STEEL CORP , MAZDA MOTOR
发明人： ISHIKAWA YASUSHI , OTA HITOSHI , NAKAGAWA TOSHIKAZU , SUGIURA HIROAKI , SHIMIZU HIROSHI , MIYAURA SHINOBU
IPC分类号： F01N13/10 , B01J35/04 , F01N3/28 , F01N7/10
摘要： PURPOSE:To prevent the fatigue failure of the metal catalyst directly attached to an exhaust manifold. CONSTITUTION:A metal catalyst 6 comprises a carrier 8 whose flat plate and contact points of a corrugated plate of which brazed in the range (s) of the upper section in an exhaust air flowing direction and several turns on the peripheral edge side, and the upper end of a cylindrical catalyst case 10 surrounding the carrier 8 of this metal catalyst 6 is connected to the outlet port of an exhaust manifold 4, and the lower end of the catalyst case 10 is connected to an outlet cone 17. Glass wool 14 is arranged in the outer peripheral face of the catalyst case 10 in the upper section of the metal catalyst 6 to be held by a guide 19, and the guide 19 is supported by an insulator 12. This metal catalyst 6 is directly attached to the exhaust manifold of the front side bank which is exposed to running wind. The glass wool 14 may be provided only on the side which is exposed to running wind and which is exposed to the exhaust gas offset.

2. 发明专利

JPH09173774A METHOD FOR REMOVING FORMALDEHYDE PRODUCED IN ROOM 失效
公开(公告)号：JPH09173774A
公开(公告)日：1997-07-08
申请号：JP34903995
申请日：1995-12-21
申请人： NIPPON STEEL CORP , SEIKI KINZOKU KAKO KK
发明人： NODA TAMIO , NAKAGAWA TOSHIKAZU , SUGITA HIROHIKO
IPC分类号： B01D53/72 , B01D53/04 , B01J20/10
摘要： PROBLEM TO BE SOLVED: To economically and safely remove formaldehyde by using an adsorbent which is formed by depositing a reaction product of phosphoric acid, ammonium sulfate, or the like with hydrazine on a carrier consisting essentially of a porous mineral whose surface layer comprises silica. SOLUTION: In this method, a carrier consisting essentially of a porous mineral whose surface layer comprises silica, such as silica gel or activated clay is used. A reaction product of phosphoric acid, ammonium sulfate or a mixed aq. solution of these compounds with hydrazine is deposited on the carrier to form an adsorbent having air purification capacity. This adsorbent is used for economically and safely removing formaldehyde which is harmful to the human body and is produced in rooms of a newly-constructed house or from new furniture, etc.

3. 发明专利

JPH0861053A DURABLE DIFFUSION CONNECTION METAL CARRIER 失效
公开(公告)号：JPH0861053A
公开(公告)日：1996-03-05
申请号：JP19318194
申请日：1994-08-17
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , OTANI TADAYUKI , NAKAGAWA TOSHIKAZU
IPC分类号： F01N3/28 , B01J32/00 , B01J35/04
摘要： PURPOSE: To obtain a metal carrier excellent in its durability at low cost by connecting the outer surface of an intermediate body arranged between a honeycomb body and an outer cylinder to the outer cylinder and connecting its inner surface to the honeycomb body at positions shifted in an axial direction respectively and also placing the honeycomb body in diffusion connection. CONSTITUTION: In a metal carrier 1, a honeycomb body 4 formed by winding or piling a flat foil 2 and a wave foil 3 is stored in an outer cylinder 6 through an intermediate body 5. In order to ensure diffusion connection much more, the material of the intermediate body 5 is lessened than Cr amount and/or Al amount of the flat foil 2 and the wave foil 3. The plate thickness of the intermediate body 5 is made thiner than that of the outer cylinder 6 and thicker than those of the flat foil 2 and the wave foil 3 from a strength view point. The durability of the flat foil 2 and the wave foil 3 of the honeycomb body 4 is improved since the honeycomb body 4 can be deformed freely in a radial direction and its heat stress may become small when at least one layer of non-connection layer 7 is installed on a side where they are connected to the intermediate body 5. The intermediate body 5 is connected to the outer cylinder 6 by brazing at A part stretching out of the honeycomb body 4.

4. 发明专利

JPH07323233A CATALYST CARRIER FOR PURIFYING EXHAUST GAS AND PRODUCTION THEREOF 失效
公开(公告)号：JPH07323233A
公开(公告)日：1995-12-12
申请号：JP11647794
申请日：1994-05-30
申请人： NIPPON STEEL CORP , NIPPON KARORAIZU KOGYO KK
发明人： YAMANAKA MIKIO , TSUKAHARA YASUO , NAKAGAWA TOSHIKAZU , OTA HITOSHI , YAMAZAKI TAKANAO , YOSHIKAWA RIHEI , MURATA HIRONOBU
IPC分类号： B01D53/86 , B01J23/89 , B01J35/04
摘要： PURPOSE:To provide a carrier for directly depositing a catalyst on the surface of a metallic honeycomb without applying wash coating. CONSTITUTION:The catalyst carrier for purifying exhaust gas is produced by burying the honeycomb made of an iron based alloy foil in an Al dispersing agent or an Al-Cr composite dispersing agent containing gamma-alumina or gamma-alumina and alpha-alumina as a base (>=30% from the surface of a metallic honeycomb structural body), heat treating at 700-950 deg.C 4-20hr in an oxidizing atmosphere to execute the composite cementation of Al or Al-Cr and the joining of a corrugated plate/a flat plate and to obtain a porous honeycomb surface and after that, directly depositing a noble metal catalyst on the surface of the metallic honeycomb after removing the dispersing agent. The metallic carrier low in back pressure is obtained by directly depositing the catalyst on the metallic honeycomb.

5. 发明专利

JPH0716476A PRODUCTION OF METALLIC CARRIER 失效
公开(公告)号：JPH0716476A
公开(公告)日：1995-01-20
申请号：JP16352193
申请日：1993-07-01
申请人： NIPPON STEEL CORP
发明人： OTA HITOSHI , YASHIRO MASAO , NAKAGAWA TOSHIKAZU , ISHIKAWA YASUSHI
IPC分类号： B01D53/86 , B01J32/00 , B01J35/04 , F01N3/28
摘要： PURPOSE:To efficiently produce a high quality metallic carrier excellent in durability by applying a joining inhibitor to the prescribed positions of the inside of an outer tube or the prescribed positions of the outside of a honeycomb body, housing the honeycomb body in the outer tube and carrying out brazing so that unjoined parts are formed at the prescribed positions between the honeycomb body and the outer tube. CONSTITUTION:Flat sheets 1a and corrugated sheets 1b each made of a heat resistant metal are alternately laminated or a flat sheet 1a and a corrugated sheet 1b are superposed and wound. The resulting honeycomb body 1 is housed in an outer tube 2 to obtain a metallic carrier. At this time, a joining inhibitor is applied to the prescribed positions of the inside of the outer tube 2 or the prescribed positions of the outside of the honeycomb body 1, the honeycomb body 1 is housed in the outer tube 2 and brazing is carried out with a brazing filler metal 3 so that unjoined parts are formed at the prescribed positions between the honeycomb body 1 and the outer tube 2. The outside of the honeycomb body 1 is prevented from sticking to the inside of the outer tube 2 by a diffusion joining reaction, joining can be carried out only at the prescribed positions and the objective high quality metallic carrier excellent in durability is efficiently produced.

6. 发明专利

JPH06210185A FORMATION OF METALLIC CARRIER 失效
公开(公告)号：JPH06210185A
公开(公告)日：1994-08-02
申请号：JP523593
申请日：1993-01-14
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , NAKAGAWA TOSHIKAZU , TOSHIMA SADAO
IPC分类号： B01J35/04 , B23K31/02 , B32B3/12
摘要： PURPOSE:To increase the surface pressure of contact of flat foil with corrugated foil and to attain satisfactory interfacial joining such as diffusion joining by pressing rolls or sliding plates against a honeycomb body from an outside in radial directions and carrying out winding while producing prestrain in the corrugated foil. CONSTITUTION:When flat foil 2 and corrugated foil 3 obtd. by corrugating flat foil are wound around a shaft to form a honeycomb body 4, winding is carried out while pressing rolls 7 or sliding plates 9 against a formed honeycomb body 4 from the outside. The resulting honeycomb body 4 is heated in a nonoxidizing atmosphere optionally after insertion into an outer tube 5 to join the interior of the honeycomb body 4 or to further join the honeycomb body 4 to the outer tube 5. Inter-facial joining between the flat foil 4 and the corrugated foil 3 of the honeycomb body 4, e.g. diffusion joining is satisfactorily attained and the objective metallic carrier 1 having durability can be produced.

7. 发明专利

JPH06106071A PRODUCTION OF METALLIC CARRIER 失效
公开(公告)号：JPH06106071A
公开(公告)日：1994-04-19
申请号：JP26039092
申请日：1992-09-29
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA YASUSHI , NAKAGAWA TOSHIKAZU , TOSHIMA SADAO
IPC分类号： B01J35/04 , B01D53/86 , B23K20/00 , F01N3/28
摘要： PURPOSE:To provide the process for production of the metallic carrier suitable for diffusion joining by making combination use of winding of flat foil while imparting back tension thereto at the time of forming a honeycomb body and further forming the foil to such a corrugated foil shape as to increase contact areas. CONSTITUTION:This process for production of the metallic carrier 6 consists in spirally winding the corrugated foil 3 in superposition while imparting 1 to 5kg/cm back tension to the flat foil 2 in a honeycomb body forming line, housing the laminated and formed honeycomb body 1 in a metallic outside cylinder 5 to form a metallic carrier 6 and reducing the diameter of the metallic carrier, then diffusion joining the contact parts between the flat foil 2 and the corrugated foil 3 of the honeycomb body 1.

8. 发明专利

JPH02261550A HIGH HEAT-RESISTANT METALLIC CARRIER FOR AUTOMOBILE CATALYST AND ITS PRODUCTION 失效
公开(公告)号：JPH02261550A
公开(公告)日：1990-10-24
申请号：JP8451989
申请日：1989-04-03
申请人： NIPPON STEEL CORP , TOYOTA MOTOR CORP , NIPPON KINZOKU CO LTD
发明人： YAMANAKA MIKIO , TANAKA TAKASHI , SADANO YUTAKA , NAKAGAWA TOSHIKAZU , SUGIURA TATSUO , SHIBATA SHINJI , AOYANAGI HIKARI , NISHIZAWA YOSHIO , KASAHARA AKIHIKO
IPC分类号： B01J35/04 , F01N3/28
摘要： PURPOSE:To enhance the brazing strength and to improve the resistance to thermal fatigue by forming a catalyst carrier with the unnecessary brazing material deposition rate from the center axis of the roll of a metallic honeycomb body to more than the half of the way to the outermost periphery specified. CONSTITUTION:Flat metallic foil (flat foil) and corrugated metallic foil (corrugated foil) are alternately wound and brazed to each other to form the metallic honeycomb body, and the metallic carrier for automobile catalyst is formed by the honeycomb body and a metallic outer cylinder for encasing the honeycomb body. In this metallic carrier, the brazing material deposition rate (unnecessary brazing material deposition rate) on the foil part of the honeycomb body other than the joint between the flat foil and corrugated foil at the brazing part from the center axis in the roll of the honeycomb body to more than the half of the way to the outermost periphery is controlled to

9. 发明专利

JPH08112532A METALLIC SUBSTRATE FOR EXHAUST GAS PURIFICATION CATALYST AND ITS PRODUCTION 失效
公开(公告)号：JPH08112532A
公开(公告)日：1996-05-07
申请号：JP27431394
申请日：1994-10-14
申请人： NIPPON STEEL CORP , NIPPON KARORAIZU KOGYO KK
发明人： YAMANAKA MIKIO , NAKAGAWA TOSHIKAZU , OTA HITOSHI , YOSHIKAWA RIHEI , ISHIKURA KATSUHIKO , MURATA HIRONOBU
IPC分类号： B01D53/86 , B01J23/86 , B01J35/04 , B23K20/00
摘要： PURPOSE: To impart heat resistance to an iron or iron-based alloy honeycomb and to carry out high reliability joining between the corrugated foil and flat foil of the honeycomb while avoiding the remarkable deterioration of the material by joining the contact points of the foils and the contact points of the honeycomb and a jacket with diffusion layers enriched with Cr and Al. CONSTITUTION: When a metallic honeycomb 1 is subjected to cementation treatment so as to impart heat resistance and bonding strength, cementation treatment is carried out using a Cr-based diffusing agent whose Cr content is higher than the Al content. By this treatment, high reliability joining is carried out and satisfactory heat resistance is imparted in spite of such a relatively low extent of cementation as not to cause the remarkable deterioration of the material. When a diffusing agent contg. >=2 times (wt.) as much Cr as Al is used, the activity of Al is moderately controlled and the adhesion and cementation of Cr and Al are carried out at narrow-gap parts around the contact points of the corrugated foil 3 and the flat foil 2 of the honeycomb 1 as well as at the other part. As a result, joining is carried out with diffusion layers enriched with Cr at >=2wt.% concn. and Cr+Al at 12-30wt.% concn.

10. 发明专利

JPH0880442A METALLIC HONEYCOMB BODY FOR PURIFYING WASTE GAS AND PRODUCTION THEREOF 失效
公开(公告)号：JPH0880442A
公开(公告)日：1996-03-26
申请号：JP21900494
申请日：1994-09-13
申请人： NIPPON STEEL CORP , NIPPON KARORAIZU KOGYO KK
发明人： OTA HITOSHI , YAMANAKA MIKIO , ISHIKAWA YASUSHI , NAKAGAWA TOSHIKAZU , MURATA HIRONOBU , YOSHIKAWA RIHEI , TAKEDA TSUYOSHI
IPC分类号： F01N3/28 , B01D53/86 , B01J35/04
摘要： PURPOSE: To form a product in a high yield and embody an excellent productiv ity by forming a honeycomb body with a conventional steel, etc., and constitut ing an outer periphery layer of the honeycomb body with plural winding of a plane plate, and moreover, forming a aluminum.iron alloy layer, etc., on the surface of the plane plate 1a and a corrugated plate of the honeycomb body. CONSTITUTION: Firstly the plane plate 1a and the corrugated plate 1b are lapped in a conventional method, then wrapped to form the honeycomb body 1 in a specific dimension. Then, a powdery mixture, for example, mixing powdery alumina and powdery ammonium chloride to at least one kind among powdery Fe-Al alloy, powdery Fe-Cr-Al alloy and powdery Fe-REM is filled in the honeycomb body 1 as a diffusing agent. Then, the honeycomb body is charged in a powder tank 4 in which this powdery mixture is filled to fill the outer periphery of the honeycomb body with this powdery mixture 3, then heated in Ar atmosphere. A heat resistant Fe-Al alloy layer is formed on the surface of each plate constituting the honeycomb body by subjecting the honeycomb body 1 to a power penetrating treatment like this.

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