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11. 发明专利

JPS5497516A PRODUCTION OF LOW PHOSPHORUS STEEL BY DOUBLE SLAG BLOW SMELTING 失效
公开(公告)号：JPS5497516A
公开(公告)日：1979-08-01
申请号：JP467178
申请日：1978-01-18
申请人： SUMITOMO METAL IND
发明人： TOZAKI YASUYUKI , OKAMOTO SETSUO , HAMANA TAKATOSHI
IPC分类号： C21C5/28 , C21C5/32
摘要： PURPOSE:In converter double-slag blow-smelting of steel, particularly in the primary blow-smelting, the process is carried out by using hard blow in the former half period and soft blow in the later half blow. The soft blow is applied with additional short-time hard blow thereby assuredly providing low phosphorus steel. CONSTITUTION:For oxidation-smelting, oxygen is jetted from the lance 3 mounted above the molten steel 2 in the converter 1. In the former half period of the primary blow-smelting, a 5-minute hard blow of oxygen jet is performed so that the molten metal surface is depressed by the depth L and that the ratio L/L0 should be 0.29 to 0.32, where L0 indicates the depth of molten steel 2. Then, in the latter half period, a 5-minute soft blow is carried out so that L/L0 will be 0.10 to 0.22, with the process including one or more of short-time hard blow of about 0.3 L/L0. The process oxidizes phosphorus present in the molten steel causing phophorus to move into the slag which is exhausted. Then, a 10-minute secondary smelting process with about 0.24 L/L0 is performed to produce low-phosphorus steel.

12. 发明专利

JPS5274521A PRODUCTIN OF HOT COIL MATERIAL FOR LINE PIPE HAVING HIGH RESISTANCE TO HYDROGEN INDUCED CRACKING 失效
公开(公告)号：JPS5274521A
公开(公告)日：1977-06-22
申请号：JP15020475
申请日：1975-12-18
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , IKEDA AKIO , TERASAKI FUKUNAGA
IPC分类号： C22C38/00 , C21D6/00 , C21D8/02 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48
摘要： PURPOSE:After a steel material comprising specific quantities of C' Si' Mn' P' S' Cu' Al and Fe is subjected to rolling and finial finishing at above 850 deg.C by a hot hot strip mill, it is coiled at above 670 deg.C, whereby the captioned hot coil material whose strength level is equivalent around API standard X42-X70 is produced.

13. 发明专利

JPH108245A HIGH PURITY TITANIUM MATERIAL AND HIGH PURITY TITANIUM TARGET 失效
公开(公告)号：JPH108245A
公开(公告)日：1998-01-13
申请号：JP18549096
申请日：1996-06-25
申请人： SUMITOMO SITIX CORP , SUMITOMO METAL IND
发明人： ONISHI TAKASHI , YOSHIMURA YASUTOKU , OKAMOTO SETSUO , HARADA MUNEO , FUKUI KATSUICHI , OMA TAKAHIKO , MAEDA HISASHI
IPC分类号： C22B34/12 , C23C14/06 , C23C14/34
摘要： PROBLEM TO BE SOLVED: To reduce the specific resistance of Ti silicide formed by a salicide process and to increase the annealing temp. width in which the low specific resistance can be obtd. by regulating the purity of Ti to specified value or above and the content of oxygen to specified value or below. SOLUTION: This high purity Ti material is the one in which the purity of Ti is regulated to >=99.9999%, and the content of oxygen is regulated to

14. 发明专利

JPH0588283B2 失效
公开(公告)号：JPH0588283B2
公开(公告)日：1993-12-21
申请号：JP6032785
申请日：1985-03-25
申请人： SUMITOMO METAL IND
发明人： YOSHIDA SHUJI , TATENO MASAKI , OKAMOTO SETSUO , MATSUO SHIGEYOSHI , KAWAYOSHI YATSUHIRO
IPC分类号： C21C1/02

15. 发明专利

JPH0558045B2 失效
公开(公告)号：JPH0558045B2
公开(公告)日：1993-08-25
申请号：JP27484584
申请日：1984-12-28
申请人： SUMITOMO METAL IND
发明人： SUZUKI SADAYUKI , HAMAMATSU SHIGEKI , SHIRAI YASUTA , OKAMOTO SETSUO
IPC分类号： B21B1/22 , B23K20/04 , C21D8/02 , C21D9/46

16. 发明专利

JPH0332601B2 失效
公开(公告)号：JPH0332601B2
公开(公告)日：1991-05-14
申请号：JP4973685
申请日：1985-03-13
申请人： SUMITOMO METAL IND
发明人： YOSHIDA SHUJI , TATENO MASAKI , OKAMOTO SETSUO , MATSUO SHIGEYOSHI , YAMAMOTO TAKAIKU
IPC分类号： C04B5/06 , B01J20/02 , C21C1/04 , F27D15/00

17. 发明专利

JPS6246910A METHOD AND APPARATUS FOR RECOVERING GRAPHITE 失效
公开(公告)号：JPS6246910A
公开(公告)日：1987-02-28
申请号：JP18559785
申请日：1985-08-23
申请人： SUMITOMO METAL IND
发明人： TATENO MASAKI , MATSUO SHIGEYOSHI , YOSHIDA SHUJI , OKAMOTO SETSUO
IPC分类号： C01B31/04
摘要： PURPOSE:To efficiently recover free graphite by a simple method by sucking away the graphite content on the surface of a molten metal by the negative pressure generated from the high-velocity gaseous flow of an inert gas and putting the periphery of a suction part in an inert gaseous atmosphere. CONSTITUTION:Gaseous N2 4a is ejected from a nozzle 4 to a conduit 5 and slag 3 contg. the free graphite existing on the surface of the molten iron 2 in a molten iron pan 1 is sucked through an aperture of a suction pipe 6 communicating with the conduit 5 by the negative pressure generated by the ejection of the gas. An approximately toric header pipeline 7a to which the gaseous N2 is supplied from a pipe 7 is provided to the outside periphery of the suction pipe 6 and the gaseous N2 7b is injected approximately horizontally with the liquid surface of the molten iron from the slits bored to the lower part of the pipeline 7a over the entire, periphery thereof. The periphery of the aperture of the suction pipe 6 is thereby placed in the gaseous N2 atmosphere. The suction of the air arising from the suction of the slag is thus prevented and the recovery of the free graphite in the sucked slag is made possible without burning the same.

18. 发明专利

JPS6234663A CASTING METHOD FOR LH UNIDIRECTIONALLY SOLIDIFIED STEEL INGOT 失效
公开(公告)号：JPS6234663A
公开(公告)日：1987-02-14
申请号：JP17366985
申请日：1985-08-06
申请人： SUMITOMO METAL IND
发明人： KIGUCHI HIROSHI , YOSHIHARA KAKUJI , NAKANO NOBURU , OKAMOTO SETSUO
IPC分类号： B22D27/04 , B22D27/06
摘要： PURPOSE:To obtain a LH unidirectionally solidified steel ingot having a high columnar crystal range and defectless internal quality for a thick steel plate by throwing a molten steel coating material to form a slag layer in the initial period of casting then throwing a slow burning type exothermic heat insulating material in continuation until the casting ends and further throwing a strong exothermic heat insulating material since the end period of casting. CONSTITUTION:The steel ingot of a low height having

19. 发明专利

JPS61165587A SLAG SUCTION DEVICE 失效
公开(公告)号：JPS61165587A
公开(公告)日：1986-07-26
申请号：JP461385
申请日：1985-01-14
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , MATSUO SHIGEYOSHI , TATENO MASAKI , TAKEISHI YOSHIAKI , SHOJI YASUO
IPC分类号： B22D43/00 , B22D37/00 , F27D3/15

20. 发明专利

JPS61144243A MANUFACTURE OF CLAD STEEL INGOT 失效
公开(公告)号：JPS61144243A
公开(公告)日：1986-07-01
申请号：JP26583984
申请日：1984-12-17
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , YOSHIHARA KAKUJI , SUZUKI SADAYUKI
IPC分类号： B22D7/02 , B22D19/16
摘要： PURPOSE:To improve a blooming yield by providing a projecting fin at lateral ends of a clad metal and determining the thickness, width, and length to be a specified size, respectively. CONSTITUTION:The projecting fin 7 is provided at both the lateral ends 2a of the clad metal 2 hung in a mold 3 previously. The thickness of the fins 7 is thinner than that of the clad metal 2 and the length of the fins 7 is equal to the full length of the ends 2a. The fins 7 are welded to the clad metal 2. The lateral size of the fins 7 is to be a size making a sufficient clearance between the fin and a facing inside surface of the mold 3. Propagation of cracks in the lateral direction is prevented by buffer action of the fins 7 when a clad ingot casted by this method is rolled by a blooming mill, so that the blooming yield is increased.

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