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1. 发明专利

CA1279462C CONTINUOUS CASTING METHOD 未知
公开(公告)号：CA1279462C
公开(公告)日：1991-01-29
申请号：CA515167
申请日：1986-08-01
申请人： NIPPON STEEL CORP
发明人： OGIBAYASHI SHIGEAKI , YAMADA MAMORU , MUKAI TATSUO , TEZUKA MAKOTO , HIRAI MASAZUMI
IPC分类号： B22D11/12 , B22D11/06 , B22D11/00
摘要： A method of the continuous casting of molten metal by continuously withdrawing a strand is disclosed. The method is characterized in that the thickness of the strand is continuously reduced at a rate of 0.5 mm/min to less than 2.5 mm/min in the region between the point of time when the center of the strand has a temperature corresponding to a solid-phase ratio being within the range of 0.1 to 0.3 and the point of time when said temperature has dropped to a level corresponding to the solid-phase ratio at the limit of fluidization, while substantially no reduction in thickness is effected in the region between the point of time when the center of the strand has a temperature corresponding to the solidphase ratio at the limit of fluidization and the point of time when said temperature has dropped to the solidus line.

2. 发明专利

ES2001615A6 METODO PARA COLADA CONTINUA DE METALES 未知
公开(公告)号：ES2001615A6
公开(公告)日：1988-06-01
申请号：ES8601468
申请日：1986-08-01
申请人： NIPPON STEEL CORP
发明人： OGIBAYASHI SHIGEAKI , YAMADA MAMORU , MUKAI TATSUO , TEZUKA MAKOTO , HIRAI MASAZUMI
IPC分类号： B22D11/12 , B22D11/128
摘要： METODO PARA COLADA CONTINUA DE METALES. EN EL METODO DE COLADA EL ESPESOR DE LA BARRA SE REDUCE DE MANERA CONTINUA A LA VELOCIDAD DE 0,5 MM/MIN HASTA MENOR DE 2,2 MM/MIN ENTRE EL MOMENTO EN QUE EL CENTRO DE LA BARRA TIENE UNA TEMPERATURA QUE CORRESPONDE A UNA PROPORCION DE FASE SOLIDA ENTRE 0,1 Y 0,3 Y EL MOMENTO EN QUE DICHA TEMPERATURA HA DESCENDIDO A NIVEL QUE CORRESPONDE A LA PROPORCION DE FASE SOLIDA DE LIMITE DE FLUIDIZACION, SIN REDUCCION SUSTANCIAL EN EL ESPESOR ENTRE EL MOMENTO EN QUE EL CENTRO DE LA BARRA TIENE LA TEMPERATURA QUE CORRESPONDE A LA PROPORCION DE FASE SOLIDA DE LIMITE DE FLUIDIZACION Y EL MOMENTO EN EL QUE DICHA TEMPERATURA HA DESCENDIDO AL LIMITE DE SOLIDO.

3. 发明专利

AU571787B2 CONTINUOUS CASTING METHOD 未知
公开(公告)号：AU571787B2
公开(公告)日：1988-04-21
申请号：AU6079186
申请日：1986-08-01
申请人： NIPPON STEEL CORP
发明人： OGIBAYASHI SHIGEAKI , YAMADA MAMORU , MUKAI TATSUO , TEZUKA MAKOTO , HIRAI MASAZUMI
IPC分类号： B22D11/12 , B22D11/00
摘要： A method of the continuous casting of molten metal by continuously withdrawing a strand is disclosed. The method is characterized in that the thickness of the strand is continuously reduced at a rate of 0.5 mm/min to less than 2.5 mm/min in the region between the point of time when the center of the strand has a temperature corresponding to a solid-phase ratio being within the range of 0.1 to 0.3 and the point of time when said temperature-has dropped to a level corresponding to the solid-phase ratio at the limit of fluidization, while substantially no reduction in thickness is effected in the region between the point of time when the center of the strand has a temperature corresponding to the solid-phase ratio at the limit of fluidization and the point of time when said temperature has dropped to the solidus line.

4. 发明专利

JPH05345189A 失效
公开(公告)号：JPH05345189A
公开(公告)日：1993-12-27
申请号：JP17765592
申请日：1992-06-12
申请人： NIPPON STEEL CORP
发明人： FUJIMOTO CHIAKI , SUZUKI KENICHI , WATANABE KOJI , KOIKE TOSHIO , SENOO KENGO , MUKAI TATSUO
IPC分类号： C02F1/58 , C02F1/72
摘要： PURPOSE:To provide a method for treatment wherein a waste water contg. an org. halogen compd. is efficiently decomposed. CONSTITUTION:Fenton's reaction is suppressed and decomposition reaction of an org. halogen compd. is efficiently performed by adding hydrogen peroxide water into an org. halogen compd.-contg. waste water in the presence of a water soluble complex of a transition metal such as iron and manganese. Therefore, as a metal ion in the water soln. is stabilized, it becomes possible to feed stably a metal ion related with Fenton's reaction and in addition, it becomes possible to recycle the valence number of the metal ion and treatment of the org. halogen compd.-contg. waste water can efficiently be performed.

5. 发明专利

JPS62275556A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS62275556A
公开(公告)日：1987-11-30
申请号：JP13627686
申请日：1986-06-13
申请人： NIPPON STEEL CORP
发明人： OGIBAYASHI SHIGEAKI , YAMADA MAMORU , MUKAI TATSUO , TEFUN MAKOTO , HIRAI MASAZUMI
IPC分类号： B22D11/128 , B22D11/12 , B22D11/20
摘要： PURPOSE:To prevent segregation of impurities in a cast slab by executing the rolling reduction to the cast slab at the range of temp. in the center part of cast slab, corresponding to the temp. from the specific solidus ratio to the fluidized limit solidus ratio by the specific rolling reduction rate and avoiding the rolling reduction to the cast slab at the range of temp. from the fluidized limit solidus ratio to the solidus line temp. CONSTITUTION:The cast slab is positively to execute the rolling reduction at the range of temp. in the center part thereof, that is, at the time of reaching to temp. corresponding to the temp. from 0.1-0.3 solidus ratio to the fluidized limit solidus ratio. In the temp. range, the cast slab is continuously reduced as rolling at the ratio of >=0.5mm/min and

6. 发明专利

JPS5791823A DIRECT MANUFACTURE OF THIN PLATE 失效
公开(公告)号：JPS5791823A
公开(公告)日：1982-06-08
申请号：JP16658880
申请日：1980-11-28
申请人： NIPPON STEEL CORP
发明人： TAKECHI HIROSHI , KATOU HIROSHI , MUKAI TATSUO
IPC分类号： B21C37/02 , B22D13/00
摘要： PURPOSE:To directly manufacture at a single stroke a thin plate whose mechanical property has been improved remarkably, by spirally cutting open a thin steel pipe which has been cast centrifugally, and unbending and setting it. CONSTITUTION:Molten steel is charged into a centrifugal casting mold, and a steel pipe having about 5-20mm. thickness is cast. Subsequently, this steel pipe is cut open spirally so as to have prescribed width, and after it has been unbent for setting, it is wound. Subsequently, this wound steel plate is pickled, and after that, is cold-rolled, annealed, and a thin plate is obtained. According to said method, the rolling process is eliminated or saved, and the thin plate is obtained in a short time by a hot flow production.

7. 发明专利

JPH07313872A DEODORANT HAVING AIR CLEANING POWER 失效
公开(公告)号：JPH07313872A
公开(公告)日：1995-12-05
申请号：JP13675094
申请日：1994-05-27
申请人： NIPPON STEEL CORP
发明人： NODA TAMIO , MUKAI TATSUO
IPC分类号： A61L9/01 , B01D53/38 , B01D53/81 , B01J20/10 , B01J20/28
摘要： PURPOSE:To obtain a deodorant which can be effectively utilized after adsorption is carried out up to the adsorption capacity as an adsorbent for cleaning air by removing acetaldehyde and nitrogen-contg. malodorous components such as ammonia and trimethylamine. CONSTITUTION:Double salt of phosphoric acid and hydrazine is carried on a porous mineral with a surface layer of silica such as silica gel, activated clay or chain-shaped magnesium silicate to obtain the objective deodorant having air cleaning power. This deodorant has high acetaldehyde removing performance and high ammonia removing performance and is excellent in suitability to recycling because it is used as fertilizer after function as an adsorbent is lost.

8. 发明专利

JPS6233048A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS6233048A
公开(公告)日：1987-02-13
申请号：JP17131485
申请日：1985-08-03
申请人： NIPPON STEEL CORP
发明人： OGIBAYASHI SHIGEAKI , YAMADA MAMORU , MUKAI TATSUO , TEFUN MAKOTO
IPC分类号： B22D11/128 , B22D11/12 , B22D11/20
摘要： PURPOSE:To prevent the segregation of an ingot and to provide uniform quality thereto by continuously rolling down an unsolidified billet under casting and changing the rolling reduction per unit time thereof according to each temp. region. CONSTITUTION:The unsolidified ingot under casting is continuously rolled down to solidify the ingot. The rolling reduction per unit time is controlled to 0.5-2.0 mm/min in the temp. region (stage I) from the point of the time when the central part of the ingot attains the liquidus line temp. up to the point of the time corresponding to the solid phase rate at the flow limit and thereafter the rolling reduction is controlled to 0 or

9. 发明专利

JPS5897477A CONTINUOUS CENTRIFUGAL CASTING METHOD FOR METALLIC IRON PIPE 失效
公开(公告)号：JPS5897477A
公开(公告)日：1983-06-09
申请号：JP19652281
申请日：1981-12-07
申请人： NIPPON STEEL CORP
发明人： MUKAI TATSUO , KATOU HIROSHI , FUKUDA MASAHIRO , UCHIMURA MITSUO
IPC分类号： B22D13/10 , B22C3/00 , B22D11/14
摘要： PURPOSE:To eliminate the need for the time for preparation of coating, etc., the time for discharging of iron pipes after casting, etc. by the prior art and to improve the production of metallic iron pipes considerably in the stage of charging molten iron continuously into a centrifugal casting mold and producing continuous metallic iron pipes by using lead as a lubricant. CONSTITUTION:Molten lead is charged 10 as a lubricant 5 into a mold 2 under idling, and is supplied over the entire inside wall surface of the mold 2. While the excess is kept overflowing slightly at about 1-2mm. height from the restricting part 6 on the outlet side of the mold 2, the outside diameter of an iron pipe 8 is regulated. While the molten steel charged 1 into the mold 2 under rotation in this state is pressed to the inside wall of the mold by centrifugal forces, the iron pipe 8 cooled by a cooler 7 is formed, and is drawn in the drawing direction on the right to the outside of the mold 2 by drawing rolls 9,.... During this casting, he molten lead is allowed to overflow at a proper rate at al times from the part 6 and the outside diameter of the pipe 8 to be cast is made by a means for measuring the height in the upper end part of the pipe 8. The overflowing lead is once received in a molten state in a cylindrical receiving vessel 11 for lead and is again circulated to a nozzle 10.

10. 发明专利

JPS57145914A FOAMING SUPPRESSING METHOD IN MOLTEN IRON RECEIVING VESSEL 失效
公开(公告)号：JPS57145914A
公开(公告)日：1982-09-09
申请号：JP3054381
申请日：1981-03-05
申请人： NIPPON STEEL CORP
发明人： KASE MASAJI , KUME SHIYOUICHI , MUKAI TATSUO , TOKI MASAHIRO , OKUDA KOUSUKE
IPC分类号： C21C5/28 , C21C1/04
摘要： PURPOSE:To perform receiving of molten pig iron while suppressing foaming perfectly by determining the storage height of the molten pig iron and the thickness of a slag layer from the amt. of the molten pig iron received in a vessel and the amt. of addition of a desiliconizing agent and moving a gas blowing nozzle in follow up to the ascending of the slag layer. CONSTITUTION:The amt. of the molten pig iron received in a molten pig iron receiving vessel is measured continuously, and the height of the molten pig iron is determined from the relations between the amt. of the molten pig iron received and the storage height of the molten metal which are prepared beforehand. On the other hand, the thickness of the slag layer floating on the upper part of the molten pig iron is determined theoretically from the amt. of addition of the desiliconizing agent. With respect to the slag layer ascending in accordance with the ascending of the storage height of the molten pig iron, the nozzle under blowing of gas is moved upward in follow up to the desired positions in the vertical direction. Thereby, a desired amt. of the molten pig iron is received safely under the perfect suppression of foaming in the floating slag.

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