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41. 发明专利

JPH0513721B2 失效
公开(公告)号：JPH0513721B2
公开(公告)日：1993-02-23
申请号：JP20386888
申请日：1988-08-18
申请人： NIPPON STEEL CORP
发明人： KUTOGI YUKIHARU , USUI YOSHIFUMI , KURASHIGE YUTAKA , KAKO TAKUZO , YAMADA MAMORU , TANAKA KAZUAKI
IPC分类号： B21B1/26 , B21B1/38 , B21B1/46 , B22D11/20

42. 发明专利

JP2001152980A CATALYST CARRIER AND GAS REFORMING METHOD USING CATALYST CARRIER 失效
公开(公告)号：JP2001152980A
公开(公告)日：2001-06-05
申请号：JP33397399
申请日：1999-11-25
申请人： NIPPON STEEL CORP
发明人： KASUYA MASAYUKI , OKAZAKI YUICHI , KAKO TAKUZO , OKOCHI TOSHIHIRO , SAKABA NORIO
IPC分类号： B01D53/86 , B01J35/04 , C01B3/32 , F01N3/28 , F02M27/02
摘要： PROBLEM TO BE SOLVED: To provide a catalyst carrier improving the efficiency of the catalyst reaction without increasing the pressure loss in the catalyst carrier nor raising the cost and provide a gas reforming method using the catalyst carrier. SOLUTION: This catalyst carrier is characterized to have a honeycomb body having a lot of cells carrying the catalysts, a vibration application device 4 vibrating the honeycomb body 2, and a rotation driving device 5 rotating the honeycomb body. This gas reforming method is characterized to use the catalyst carrier 1 having the honeycomb body 2 with a lot of cells carrying the catalysts, vibrate the honeycomb body 2 in inducing the catalyst reaction, or rotate the honeycomb body 2.

43. 发明专利

JP2000279763A METAL CARRIER COMPOSED OF THIN METALLIC FOIL FOR CLEANING EXHAUST GAS OF AUTOMOBILE AND ITS PRODUCTION 失效
公开(公告)号：JP2000279763A
公开(公告)日：2000-10-10
申请号：JP8698799
申请日：1999-03-29
申请人： NIPPON STEEL CORP
发明人： OKAZAKI YUICHI , KASUYA MASAYUKI , KAKO TAKUZO , YAMANAKA MIKIO
IPC分类号： B01D53/86 , B01J35/04 , B01J37/02 , B21D47/00 , C22C38/00 , C22C38/06 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To improve the erosion resistance and oxidation resistance of a metallic carrier formed of corrugated foil and flat foil consisting of thin metallic foil and to allow the carrier to exhibit excellent durability. SOLUTION: The brazing part 3 of =70% of the entire brazing part 3, by which the strength of the brazing part 3 is maintained and in addition, the form as the honeycomb may be maintained even if the brazing part 3 is melted by an accidental fire.

44. 发明专利

JP2000051711A CATALYST CARRIER FOR PURIFICATION OF EXHAUST GAS AND ITS PRODUCTION 失效
公开(公告)号：JP2000051711A
公开(公告)日：2000-02-22
申请号：JP22409898
申请日：1998-08-07
申请人： NIPPON STEEL CORP
发明人： KASUYA MASAYUKI , OKAZAKI YUICHI , KAKO TAKUZO
IPC分类号： F01N3/28 , B01D53/86 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To improve the rectifying effect of a catalyst carrier by constituting a honeycomb body as a precarrier disposed on the upstream side of an exhaust gas flow from heat-resistance alloy flat foils and wavy foils in a wound state in such a manner that the face of the body where the exhaust gas enters is convex while the face where the gas outgoes is concave. SOLUTION: In the catalyst converter for purification of the exhaust gas from an internal combustion engine, a conical part 18 and a part 11 which a reduced diameter are disposed in the front and on the back of a main carrier 3 which mainly purifies the exhaust gas, and the top end of each part is connected to the passage of the exhaust gas. A precarrier 15 is disposed in the conical part 18 to rectify the exhaust gas flow entering the main carrier 3. The precarrier 15 is a honeycomb body 1 produced by winding heat-resistant alloy flat foils and wave foils and joining all or a part of contact part between the flat foils and the wavy foils. The honeycomb body 1 is formed in such a manner that the face where the exhaust gas enters 13 is convex, while the face where the exhaust gas outgoes 14 is concave, and that the thickness of the honeycomb body 1 is 4 to 40 mm in any part.

45. 发明专利

JPH11190516A HEAT INSULATING WALL OF HIGH TEMPERATURE HEAT TREATMENT FURNACE AND INSTALLATION METHOD THEREOF 失效
公开(公告)号：JPH11190516A
公开(公告)日：1999-07-13
申请号：JP35965797
申请日：1997-12-26
申请人： NIPPON STEEL CORP
发明人： KAKO TAKUZO , SAKAI TERUMI
IPC分类号： F23M5/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive heat insulating wall of a high temperature heat treatment furnace which withstands a prolonged use in a high temperature heat treatment furnace, especially a vacuum high temperature heat treating furnace and an installation method. SOLUTION: In a heat insulating wall of a high temperature heat treatment furnace having a casing 1 made of metal and an heat insulating material 2 covering the inside thereof, a stud rod 5 is arranged to be fixed on the metal casing 1, the surface inside the furnace of the heat insulating material is covered with a plurality of carbon sheets 3 and both of the carbon sheets are overlapped at a joint between the carbon sheets. Moreover, a reinforcing carbon sheet 4 is arranged at an upper part of the overlapped part. A head part of the stud rod 5 is arranged on the surface of the overlapped part. A carbon sheet fixing device is arranged at the head part of the stud rod to fix the carbon sheets.

46. 发明专利

JPH07256442A PRODUCTION OF METALLIC CARRIER FOR EXHAUST GAS PURIFYING CATALYST 失效
公开(公告)号：JPH07256442A
公开(公告)日：1995-10-09
申请号：JP5042894
申请日：1994-03-22
申请人： NIPPON STEEL CORP
发明人： UCHIUMI TORU , OTA HITOSHI , KAKO TAKUZO , NAKAJIMA IKUJI
IPC分类号： B23K1/00 , B01J35/04 , B23K3/06 , B32B3/12
摘要： PURPOSE:To reduce the production cost of a metallic carrier by inserting a honeycomb body which is alternately wound and superposed with corrugated foil and flat foil on each other and has the corrugated foil on its outermost periphery into a metallic outside cylinder and joining the inside of this honeycomb body and the outside cylinder by a binder. CONSTITUTION:The cylindrical honeycomb body 1 is produced by superposing and spirally winding the corrugated foil 3 having the peak parts of waveforms exhibiting a pseudo sinusoidal waveform and the flat foil 3. The outer periphery of such honeycomb body is composed of the corrugated foil 2. Such honeycomb body is press fitted into the outside cylinder 4. The peak parts of the waveforms of the corrugated foil 2 are formed to a shape having a curvature of radius R=0.2 to 0.6m. Namely, the press fitting of the honeycomb body 1 at a wide press fitting margin is possible at the time of press fitting the honeycomb body into the outside cylinder 4 if the radius of curvature R is in this range. Next, the ends of the honeycomb body 1 are made flush and are brought into contact with sponge impregnated with a binder liquid to simultaneously supply the binders necessary for joining the outside cylinder 4 and the honeycomb body 1 and joining the honeycomb body 1 itself. Powder solder is sprayed by a solder spraying device to the outside cylinder 4 and the honeycomb body 1 which are then subjected to vacuum brazing treatment.

47. 发明专利

JPH0255606A MANUFACTURE OF VERY THICK STEEL PLATE OF EXCELLENT INTERNAL QUALITY 失效
公开(公告)号：JPH0255606A
公开(公告)日：1990-02-26
申请号：JP20386888
申请日：1988-08-18
申请人： NIPPON STEEL CORP
发明人： KUTOGI KOUJI , USUI YOSHIFUMI , KURASHIGE YUTAKA , KAKO TAKUZO , YAMADA MAMORU , TANAKA KAZUAKI
IPC分类号： B21B1/26 , B21B1/38 , B21B1/46 , B22D11/20
摘要： PURPOSE:To obtain a very thick steel plate of excellent internal quality by drafting a part between a liquid phase line crater top and a solid phase line crater top of a billet by a drafting amount in a specific amount range in constant drawing stages and performing plural rolling passes at speeds in a specific rolling speed range in finish rolling stages. CONSTITUTION:A billet is subjected to width spread rolling in rough rolling stages and then is rolled to have a product thickness in finish rolling stages. In constant drawing stages, a part between a liquid phase line crater top and a solid phase line crater top is continuously rolled by a drafting amount in the range of 0.5-2.0mm/min. In finish rolling stages, plural rolling passes are performed at a speed in the range of 200-350mm/sec. Further, the stock is drafted by a rolling shape ratio of >=0.5 in the billet thickness direction. An equivalent diameter of a center porosity d0 and a billet thickness h0 before rolling are changed to a diameter dk and a billet thickness hk after K passes to show a pressure welding degree by plastic deformation of the stock. Hence, UST defects in the steel plate are effectively reduced and even a very thick steel plate is easily manufactured from a continuously cast billet.

48. 发明专利

JPH0255605A MANUFACTURE OF VERY THICK STEEL PLATE OF EXCELLENT INTERNAL QUALITY 失效
公开(公告)号：JPH0255605A
公开(公告)日：1990-02-26
申请号：JP20386988
申请日：1988-08-18
申请人： NIPPON STEEL CORP
发明人： KUTOGI KOUJI , USUI YOSHIFUMI , KURASHIGE YUTAKA , KAKO TAKUZO
IPC分类号： B21B1/26 , B21B1/38 , B21B1/46
摘要： PURPOSE:To effectively reduce UST defects by performing plural rolling passes by setting finish rolling speeds in a specific speed range and drafting a stock in the casting thickness direction by a shape ratio not less than a specific value for all the rolling passes. CONSTITUTION:A billet is subjected to width spread rolling in rough rolling stages and then is rolled to have a product thickness in finish rolling stages. In finish rolling stages, plural rolling passes are performed at a rolling speed in 200-350mm/sec and the billet is drafted in the thickness direction by a rolling shape ratio M (roll projected contact length/average sheet thickness between roll gap) of >=0.5 for all the passes. An equivalent diameter of a center porosity and a billet thickness before rolling are denoted by d0 and h0, respectively; the d0 is changed to an equivalent diameter dk after K passes and delta shows a pressure welding progressing degree by plastic deformation of the stock. Progressing degrees are proportional to drafting capability of a rolling roll and plastic deformation progresses with a contacting time of a rolled stock with a roll, so that low speed rolling is effective in this method. Hence, UST defects in the steel are sheet effectively reduced by a combination of the low speed rolling with large drafting rolling and a very thick steel plate are easily manufactured.

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