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21. 发明专利

JPH0724735A NOZZLE ASSEMBLY FOR ABRASIVE WATER JET 失效
公开(公告)号：JPH0724735A
公开(公告)日：1995-01-27
申请号：JP17177193
申请日：1993-07-12
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： DAITOKU KAZUMI , INAOKA KAZUMA , SHIMOKASA TOMOHARU , NOGAMI FUJIYA , MATSUMURA HIROYUKI , IKEMOTO KIWA , TSUJITA CHIKAFUMI , TANAKA HIDENAO
IPC分类号： B24C5/04
摘要： PURPOSE:To reduce fluid friction and improve grinding efficiency by forming the main inner face part on the outlet of a mixing and accelerating conduit, which mixes abrasive material in a high velocity jet stream and accelerates it to form a grinding fluid jet stream, to be enlarged gradually toward the outlet. CONSTITUTION:The divergent part 8 is formed by enlarging the inner dia. on the inner wall face of a mixing and accelerating conduit 4 straightly toward the outlet 7 after contracted once at the inlet 6. Such a divergent form smoothes the transmission of momentum in an abrasive material accelerating process. Also, the acceleration and diffusion of a jet stream are performed at the same time. The minimum dia. on the inlet of the mixing and accelerating conduit 4 is 1.1 times the dia. of a high velocity jet stream and at least 1.1 times the maximum dia. of grinding grains. The main part tending from the minimum dia. portion to the outlet 7 has the inner dia. gradually enlarged up to twice in area and the length set 20-100 times the dia. of the inlet 6.

22. 发明专利

JPH06346143A METHOD FOR COOLING CONTINUOUS CAST SLAB OF FERRITIC STAINLESS STEEL 失效
公开(公告)号：JPH06346143A
公开(公告)日：1994-12-20
申请号：JP14203693
申请日：1993-06-14
申请人： NIPPON STEEL CORP
发明人： UCHINO TSUNEO , DAITOKU KAZUMI , NOGAMI FUJIYA
IPC分类号： C21D6/00 , C22C38/00 , C22C38/18
摘要： PURPOSE:To provide a method for cooling continuous cast slag of a ferritic stainless steel, by which the development of season crack can effectively be prevented using a comparatively simple equipment. CONSTITUTION:On the process of cooling the ferritic stainless steel continuously cast to the room temp., the cooling rate is kept to >=40 deg.C/hr while temporarily heating the edge parts of the cast slab to the temp. of the mid parts of the wide surfaces or higher in the temp. range of >=300 deg.C of the wide surfaces of the cast slab, or holding the temps. at the narrow surfaces and the edge parts of the wide surfaces of the cast slab so that the temp. at the edge parts of the cast slab becomes the temp. at the central part of the surface or higher. By this method, the development of tensile stress at the central part of the cast slab causing the season crack is eliminated.

23. 发明专利

JPH05309456A 失效
公开(公告)号：JPH05309456A
公开(公告)日：1993-11-22
申请号：JP11739392
申请日：1992-05-11
申请人： NIPPON STEEL CORP
发明人： DAITOKU KAZUMI , SHIMOKASA TOMOHARU , NOGAMI FUJIYA
IPC分类号： B08B5/02 , B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D43/00 , F27D3/15
摘要： PURPOSE:To efficiently remove slags, etc., in a hot condition by blowing off a residual material in a tundish with a suction hole arranged at a bottom thereof, high pressure gas blowing hole and ejector, thereby executing fine granulating treatment. CONSTITUTION:By blowing the high pressure gas from the high pressure gas blowing hole 8 into the suction hole 6 for sucking the residual material in the tundish matched with the nozzle hole 5 in the fitting part 2 of an immersion nozzle at the bottom of the tundish 1 and the ejector 4 having a duct 12 for introducing the residual material in the tundish sucked from the suction hole 6, the residual material in the tundish sucked from the suction hole 6 is blown off in the duct 12 and made to be the fine grains to execute the treatment. In this way, the removal of the residual material in the tundish 1 in the hot condition is available and heating at the time of reusing is eliminated and the heat efficiency is improved.

24. 发明专利

JPH03285741A CERAMIC MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH03285741A
公开(公告)日：1991-12-16
申请号：JP8353090
申请日：1990-03-30
申请人： NIPPON STEEL CORP
发明人： NOGAMI FUJIYA , DAITOKU KAZUMI , HAMAGUCHI CHIYOKATSU , SHIMOGASA TOMOHARU
IPC分类号： B22D11/04 , B22D11/059 , B32B7/12
摘要： PURPOSE:To enable high velocity casting and to extend the service life of a mold itself by mingling metallic powder or metallic fiber into organic adhesive and lining plural ceramic chips to a copper plate. CONSTITUTION:In the mold for continuous casting, the adhesive is the organic adhesive and the copper plate 3 for mold and ceramics 1 are stuck with the organic adhesive 2 adding the metallic powder or the metallic fiber. By this method, heat conductivity is improved and temp. inclination is made to gentle and the temp. in stuck layer is made to be in the permissible temp. range, and the stuck strength is maintained and heat conducting characteristic is improved.

25. 发明专利

JP2009221509A Method for starting gas-exhaustion in vacuum-degassing apparatus 有权
标题翻译：在真空脱水装置中启动气体排放的方法
公开(公告)号：JP2009221509A
公开(公告)日：2009-10-01
申请号：JP2008065477
申请日：2008-03-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOSHIDA KAZUMICHI , IHARA TETSUJIRO , NOGAMI FUJIYA
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a method for starting a gas-exhaustion in a vacuum-degassing apparatus by which air can surely be prevented from flowing into the vacuum-degassing vessel when using a pre-exhaustion of gas for shorteninga period of time for pressure reducing the inside of the vacuum-degassing vessel to a predfetermined pressure.
SOLUTION: The vacuum-degassing apparatus 10 includes; the vacuum-degassing vessel 14 disposed at the upper part of a ladle 13 and dipped into molten steel at 200-500 mm in the ladle part 14a; a vacuum-exhaust gas device for sucking the air in the vacuum-degassing vessel 14; exhaust gas pipings 16, 20 and a pressure-equalized piping 18 for connecting the vacuum-degassing vessel 14 and the vacuum exhaust gas device; an exhaust gas main valve 17 arranged in the pressure-equalized piping 18 and the exhaust gas pipings 16, 20; an pressure-equalized valve 19 arranged in the pressure-equalized piping 18; and an elevating/lowering device 11 for elevating/lowering the ladle 13. After reducing the pressure in the exhaust gas piping 20 under the state of closing the exhaust gas main valve 17 and the pressure-equalized valve 19, the pressure-equalized valve 19 is opened and the pressure-reducing degree of ≥0.04 MPa in the vacuum-degassing vessel 14 is reduced. In this case, the ladle 13 is elevated at the time point for opening the pressure-equalized valve 19 or at the time point before opening the valve.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种在真空脱气装置中启动气体排出的方法，当使用预气化的短路时段时，可以确保防止空气流入真空脱气容器的时间用于将真空脱气容器的内部压力降低到预定压力。真空脱气装置10包括：设置在钢包13的上部并在钢包部14a中以200-500mm浸入钢水中的真空脱气容器14; 用于吸入真空脱气容器14中的空气的真空排气装置; 废气管道16,20和用于连接真空脱气容器14和真空排气装置的均压管道18; 布置在均压管道18和废气管道16,20中的废气主阀17; 布置在压力平衡管道18中的压力平衡阀19; 以及用于升降钢包13的升降装置11.在关闭排气主阀17和压力平衡阀19的状态下减压排气管路20的压力后，均压阀19 真空脱气容器14中的压力降低程度≥0.04MPa。在这种情况下，在打开压力平衡阀19的时间点或打开阀门之前的时间点，钢包13升高。版权所有（C）2010，JPO＆INPIT

26. 发明专利

JP2009221508A Method for preventing corrosion of exhaust gas cooler 有权
标题翻译：防止排气冷却器腐蚀的方法
公开(公告)号：JP2009221508A
公开(公告)日：2009-10-01
申请号：JP2008065476
申请日：2008-03-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOSHIDA KAZUMICHI , WADA TOSHIYUKI , NOGAMI FUJIYA
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing the corrosion of an exhaust gas cooler by which the corrosion of an exhaust gas cooler part is prevented by reducing NOx concentration incorporated in the exhaust gas at the preheating time with a simple structure, thereby reducing the maintenance cost of the exhaust gas cooler and extending the service life.
SOLUTION: An exhaust gas duct 12 is constituted of; a first horizontal part 12a whose one end is connected to the upper part of a vacuum-degassing vessel 10; an inclining part 12b whose one end is connected to another end of the first horizontal part 12a and which inclines in slanting lower part; and a second horizontal part 12c whose one end is connected to another end of the inclining part 12b and whose another end is connected to the exhaust gas cooler 11. A connection part between the first horizontal part 12a and the inclining part 12b is made to be a first bending part P1 having the bending angle α1 to the horizontal surface, and the connecting part of the inclining part 12b and the second horizontal part 12c, is made into a second bending part P2 having the bending angle α2 to the horizontal surface. Level difference D of the bending, is made to be ≥1.0 and
摘要翻译：要解决的问题：提供一种防止排气冷却器的腐蚀的方法，通过以简单的结构在预热时间减少在排气中结合的NOx浓度来防止排气冷却器部分的腐蚀从而降低排气冷却器的维护成本并延长使用寿命。排气管12由以下构成：第一水平部分12a，其一端连接到真空脱气容器10的上部; 倾斜部分12b的一端连接到第一水平部分12a的另一端并倾斜在下部; 以及第二水平部分12c，其一端连接到倾斜部分12b的另一端，并且另一端连接到排气冷却器11.第一水平部分12a和倾斜部分12b之间的连接部分被制成将具有水平面的弯曲角度α1的第一弯曲部分P1和倾斜部分12b和第二水平部分12c的连接部分制成具有与水平面的弯曲角度α2的第二弯曲部分P2。弯曲的水平差D成为第一水平部12a的内径的≥1.0和<4.0倍，弯曲角α1，α2被定义为<45°。版权所有（C）2010，JPO＆INPIT

27. 发明专利

JP2008255401A Apparatus and method for protecting gas cooler for vacuum degassing tank 审中-公开
标题翻译：用于保护真空灭菌罐的气体冷却器的装置和方法
公开(公告)号：JP2008255401A
公开(公告)日：2008-10-23
申请号：JP2007097587
申请日：2007-04-03
申请人： Nippon Steel Corp , Nippon Steel Engineering Co Ltd , Nittetsu Plant Designing Corp , 新日本製鐵株式会社 , 新日鉄エンジニアリング株式会社 , 日鐵プラント設計株式会社
发明人： FUJII KAZUYOSHI , NOGAMI FUJIYA , WADA TOSHIYUKI , TAGAWA KENICHIRO , ITO KIYOHARU , UCHIDA MASAHIRO
IPC分类号： C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a vacuum degassing unit having a pre-heating apparatus, which is capable of favorably discharging drain built up in the lower part of a dust catcher, even when pre-heating operation of a vacuum degassing tanks is carried out over a long period of time.
SOLUTION: A first discharge pipe 11 is connected to a cylindrical part 4b at the lower part of the dust catcher, and a second discharge pipe 13 is connected to the first discharge pipe 11 via an elbow 12. The elbow 12 has nozzles 21 and 22 for discharging air through valves 15 and 16, respectively. The discharge of air through nozzles 21 and 22 purges the sites that are easily occluded and secures discharge passage for slurry-form drain. This enables smooth discharge of the drain and continuous preheating operation, even when a pre-heating exhaust gas from the vacuum degassing tank is allowed to enter into a gas cooler and produce the drain.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有预热装置的真空脱气装置，其能够有利地排出积聚在除尘器下部的排水，即使在真空脱气罐的预热操作是在很长一段时间内进行的。解决方案：第一排出管11连接到吸尘器下部的圆筒部分4b，第二排出管13经由弯头12连接到第一排出管11.弯头12具有喷嘴 21和22分别用于通过阀15和16排出空气。通过喷嘴21和22排出的空气清除容易堵塞的位置并固定用于淤浆形式排放的排放通道。即使当来自真空脱气罐的预热废气被允许进入气体冷却器并产生排水管时，也能够平稳地排放排水和连续的预热操作。版权所有（C）2009，JPO＆INPIT

28. 发明专利

JPH0971806A METHOD FOR DECIDING WHETHER CONVERTER LANCE IS USABLE OR NOT BY USING ULTRASONIC WAVE 失效
公开(公告)号：JPH0971806A
公开(公告)日：1997-03-18
申请号：JP22677495
申请日：1995-09-04
申请人： NIPPON STEEL CORP
发明人： KAWASAKI TADASHI , NOGAMI FUJIYA , TSUKAHARA TAKESHI , KOBAYASHI MASAHARU
IPC分类号： C21C5/46
摘要： PROBLEM TO BE SOLVED: To obtain a method for exactly deciding the time for judging the time for exchange by exactly beasuring the thicknesses of the residual metal of the tuyere of a converter lance having a taper at a pipe. SOLUTION: This method for deciding whether the converter lance is usable or not by using ultrasonic waves comprises measuring the thicknesses of the tuyere 2 at the front end of the converter lance by using ultrasonic vibrator transducers 1 at least at three points in the depth direction of the tuyere and at four points in its circumferential direction and deciding the converter lance having the thickness of

29. 发明专利

JPH08243923A WORKING LIQUID AND WATER JET WORKING DEVICE USING IT 失效
公开(公告)号：JPH08243923A
公开(公告)日：1996-09-24
申请号：JP4674295
申请日：1995-03-07
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： NOGAMI FUJIYA , DAITOKU KAZUMI , INAOKA KAZUMA , SHIMOKASA TOMOHARU , FURUTA TOMOHIRO , NAGAI HIROYOSHI , IKEMOTO KIWA , KUCHIKI HIROTSUNA , YAMAGUCHI MASAMICHI , KIMURA TAKESHI
IPC分类号： B24C5/02 , B24C7/00 , B24C9/00 , B24C11/00
摘要： PURPOSE: To provide a working liquid whose working capacity is increased and by which abrasion of a jet nozzle can be reduced as much as possible and abrasion of an abrasive can be reduced, and provide an abrasive type water jet work device using this work liquid. CONSTITUTION: A working liquid is a working liquid used in an abrasive type water jet working device constituted so as to work a working object by injecting a high speed fluid jet to which an abrasive is added into the working object from the nozzle tip, and cutting oil is mixed in this working liquid. The water jet working device is an abrasive type water jet working device constituted to as to work the working object by injecting a water jet into the work object under high pressure from the tip of a jet nozzle 1 after the working liquid pressurized by a booster 3 is mixed in the abrasive, and a supply means 12 is added to mix the cutting oil in the work liquid to be supplied to this jet nozzle 1.

30. 发明专利

JPH0885061A METHOD FOR MAINTAINING METALLIC PIECE 失效
公开(公告)号：JPH0885061A
公开(公告)日：1996-04-02
申请号：JP22222594
申请日：1994-09-16
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： SHIMOKASA TOMOHARU , INAOKA KAZUMARO , DAITOKU KAZUMI , KUBOTA TAKUYA , NOGAMI FUJIYA , FURUTA TOMOHIRO , NAGAI HIROYOSHI , IKEMOTO KIWA , KUCHIKI HIROTSUNA , KIMURA TAKESHI
IPC分类号： B24C1/00 , B22D11/12
摘要： PURPOSE: To remove a flaw on the front surface of a casting piece or a steel piece by preventing any flaw such as a scab after the casting piece of a continuous casting line or a steel piece from taking place after the process of rolling under pressure and width shrinkage under pressure. CONSTITUTION: A first grinding range 3 including a flaw on the front surface or in the vicinity of the front surface of a casting piece or a steel piece is so found that the width L1 on the peripheral edge part may become two times or more of the grinding depth D1 of the inward part. When the first grinding range 3 is close to side ends 5, 6 extending along the rolling direction of the casting piece or the steel piece, a second grinding range 13 formed by adding the first grinding range 3 to an additional range 12 up to the side ends 5, 6 is ground by an abrasive water jet as a mixture of abrasive grains with water. Thereby, a flaw such as a scab can be prevented from being generated after rolling under pressure and width shrinkage under pressure.

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