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1. 发明专利

JP2006077267A Facility for injecting powdery material 审中-公开
标题翻译：注射粉末材料的能力
公开(公告)号：JP2006077267A
公开(公告)日：2006-03-23
申请号：JP2004259538
申请日：2004-09-07
申请人： Nippon Steel Corp , Nittetsu Hokkaido Control Systems Corp , ニッテツ北海道制御システム株式会社 , 新日本製鐵株式会社
发明人： NAGATA SEIJI , MATSUMOTO SHUNJI , TSUDA AKIHIRO , HIRAKA NORIYASU , OZAKI MASATOSHI
IPC分类号： C21B7/00 , F27D3/18 , G01F1/74
摘要： PROBLEM TO BE SOLVED: To provide a facility for injecting powdery material provided with a measuring system for flow-rate of the powdery material with which the flow-rate of the powdery material can accurately be measured, even when changing the type of powdery material and developing the stickiness etc., of the powdery material in an electrostatic capacity type powdery material flow-rate meter.
SOLUTION: This facility for injecting the powdery material, is provided with the measuring system for flow-rate of the powdery material for performing the flowing signal treatment to the measured value in the electrostatic capacity type powdery material flow-rate meter. For correcting the measured value by detecting the stickiness of the powdery material in the flow-rate meter, the output signal in the detector at stopping time of the powdery material injection, is watched and in the case of being not less than the preset value, a prescribed correction is performed to the output signal of the detector. For preventing the measuring error caused by the change of the type of the powdery material, the flow-rate of the powdery material is corrected by comparing the flow-rate value obtained with the electrostatic capacity type powdery material flow-rate meter with the change of weighed value of the powdery material in a feed tank. Further, for avoiding the erroneous output of the flow-rate of the powdery material caused by gas component and change of moisture during purging in a divided pipe with a powdery material flow-rate mask treating part 21, the mask treatment of the powdery material flow-rate for a fixed time during stopping and after starting the injection, is performed.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种粉末材料的注入设备，该粉末材料设置有可以精确测量粉末材料的流量的粉末材料的流量测量系统，即使改变粉末材料的类型在静电电容型粉体流量计中粉状材料的粉末状物质和粘性等显现出来。
解决方案：该粉末材料注入设备具有用于对静电电容型粉体流量计中的测量值进行流动信号处理的粉末材料的流量测量系统。为了通过检测流量计中的粉末状物质的粘性来校正测量值，观察粉末材料注入停止时的检测器中的输出信号，并且在不小于预设值的情况下，对检测器的输出信号执行规定的校正。为了防止粉末状物质的变化引起的测量误差，通过将获得的静电电容型粉末流量计的流量值与静电电容型粉末流量计的变化率进行比较来校正粉末状材料的流量在进料罐中称重粉末状物料的重量。此外，为了避免在粉末状物料流量掩模处理部21的分割管道中由气体成分引起的粉末状物质的流量的错误输出和清洗时的湿度变化，粉末状物料流的掩模处理 - 在停止和开始注射之后进行固定时间。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2003302286A Method and device for sequentially measuring molten metal temperature 审中-公开
标题翻译：用于顺序测量金属温度的方法和装置
公开(公告)号：JP2003302286A
公开(公告)日：2003-10-24
申请号：JP2002106385
申请日：2002-04-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SUGIURA MASAHITO , NAKAO RYUJI , KANEKAWA MASARU , NAGATA SEIJI
IPC分类号： G01J5/02 , F27D21/00 , G01J5/00 , G01J5/10
摘要： PROBLEM TO BE SOLVED: To provide a technique for accurately and continuously measuring a molten metal temperature from the upper part of a furnace and measuring a temperature of each part inside the furnace.
SOLUTION: In this temperature measurement method, a radiation temperature of the molten metal 2 is measured via a heat-resistant measurement cylindrical body 4 inserted into the molten metal from the upper side of a melting furnace or a refining furnace and the inside space of the measurement cylinder body. In this process, when a purge gas introduced into the measurement cylinder body is jetted in the molten metal, a substantially closed measurement space part 7 is formed inside the molten metal by a purge gas pressure in the tip part of an observation cylinder body, and a radiation heat temperature of the inside wall of the measurement space is sequentially measured.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种从炉上部准确连续地测量熔融金属温度并测量炉内各部件的温度的技术。解决方案：在该温度测量方法中，通过从熔炉或精炼炉的上侧插入熔融金属的耐热测量圆筒体4测量熔融金属2的辐射温度，测量缸体的空间。在该过程中，当在熔融金属中喷射引入到测量筒体中的吹扫气体时，在观察筒体的顶端部中通过吹扫气体压力在熔融金属内形成基本封闭的测量空间部分7，依次测量测量空间的内壁的辐射热温度。版权所有（C）2004，JPO

3. 发明专利

JPH05123874A WELDING POINT DETECTING METHOD FOR RESISTANCE SEAM WELDING 失效
公开(公告)号：JPH05123874A
公开(公告)日：1993-05-21
申请号：JP28855291
申请日：1991-11-05
申请人： NIPPON STEEL CORP
发明人： MATSUI KIYOSHI , NAGATA SEIJI , SUEHISA MASAYUKI
IPC分类号： B23K13/00 , B23K13/08 , G01B11/00 , G06T1/00
摘要： PURPOSE:To automatically measure the position of a welding point with high accuracy by photographing a still picture in the vicinity of the welding point by a camera set up above the welding point and carrying out picture processing to obtain the welding point position. CONSTITUTION:The still picture photographed by the camera set up above the welding point is fetched in an electronic computer system and subjected to digital picture processing to obtain the welding point position. As the picture processing method, the part darker than a specified density level is converted to eliminate noises of the picture, then, filtering processing is carried out to detect a horizontal line, gradation emphasis processing and binarization processing are carried out to obtain a binary picture and the welding point position is obtained. Consequently, the welding point position important in controlling a welding state of a resistance welded tube manufacturing line can be automatically measured with high accuracy.

4. 发明专利

JPH1085931A DEVICE FOR CUTTING STAINLESS STEEL CAST BILLET 失效
公开(公告)号：JPH1085931A
公开(公告)日：1998-04-07
申请号：JP24620796
申请日：1996-09-18
申请人： NIPPON STEEL CORP
发明人： FUJII TSUTOMU , TSUJIMURA YOSHIMI , NAGATA SEIJI
IPC分类号： G01N27/22 , B22D11/126 , B22D11/16 , B23K7/08
摘要： PROBLEM TO BE SOLVED: To prevent a generation of a cutting detect, in cutting a cast billet in a continuous casting of stainless steel, by accurately detecting a flow rate of iron powder for cutting, adequately operating a feeding equipment for backup iron powder if a flow rate is lowered, and thereby controlling a flow rate in a proper range. SOLUTION: In a continuous casting equipment for stainless steel, the flow rate of iron powder to be used for cutting of a cast billet is measured by a capacitance type iron powder detector 7 attached above a piping 5a for feeding iron powder, and also the flow rate of a gas for transporting the iron powder is measured by its flowmeter, thereby detecting in advance the generation of defects in the flow rate of the iron powder and, in the case of an insufficient flow rate, supplying the iron powder from a backup equipment 15, so that defects are prevented from generating in cutting the cast billet.

5. 发明专利

JP2003145257A METHOD FOR JUDGING COMPLETION IN POURING OF MOLTEN STEEL AND JUDGING INSTRUMENT THEREFOR 审中-公开
公开(公告)号：JP2003145257A
公开(公告)日：2003-05-20
申请号：JP2001344255
申请日：2001-11-09
申请人： SHINKAWA DENKI KK , NIPPON STEEL CORP
发明人： IKUNO ITSUO , KURAMOTO YUJI , YAMAMOTO YASUNORI , MASUOKA MITSURU , KAWAMOTO KATSUHIKO , KOBAYASHI KEIJI , NAGATA SEIJI
IPC分类号： B22D11/16 , B22D11/10 , B22D11/18
摘要： PROBLEM TO BE SOLVED: To provide a method and an instrument for automatically inexpensively, and surely judging completion in pouring of molten steel into a tundish from a ladle, in a continuous casting in which the molten steel in the ladle is poured into an intermediate pan through a pouring hole in the ladle and further, cast into a mold from the intermediate pan. SOLUTION: In the method for judging the completion in the pouring of the molten steel 6 into the intermediate pan 2 from the ladle 1 in the continuous casting in which the molten steel 6 in the ladle 1 is poured into the intermediate pan 2 through the pouring hole 3 in the ladle, and further, cast into the mold 12 from the intermediate pan 2, the variation of the changing amount with time in the ladle weight 34 or the intermediate pan weight 18 is detected to judge the completion in the pouring of the molten steel. When the changing amount 20 with time of the ladle weight in a section 30 (or an absolute value of a difference between the changing amount and an average changing amount 24 with time) becomes not more than a critical changing amount 22 (or a critical changing ratio 21 with time) in the continuation of not less than the number of times 23, it is judged as the completion.

6. 发明专利

JP2003145256A METHOD FOR JUDGING MINIMUM OPENING DEGREE OF POURING HOLE IN LADLE AND JUDGING INSTRUMENT THEREFOR 审中-公开
公开(公告)号：JP2003145256A
公开(公告)日：2003-05-20
申请号：JP2001344256
申请日：2001-11-09
申请人： SHINKAWA DENKI KK , NIPPON STEEL CORP
发明人： KURAMOTO YUJI , MASUOKA MITSURU , YAMAMOTO YASUNORI , IKUNO ITSUO , KAWAMOTO KATSUHIKO , KOBAYASHI KEIJI , NAGATA SEIJI
IPC分类号： B22D11/103 , B22D11/10 , B22D11/16 , B22D11/18
摘要： PROBLEM TO BE SOLVED: To provide a method for judging a minimum opening degree of a pouring hole in a ladle and a judging instrument therefor for stably judging the minimum opening degree of the pouring hole without exposing the poured stream to the atmosphere and without needing the observation by an operator, in a continuous casting in which molten steel in the ladle 1 is poured into an intermediate pan 2 (tundish) through the pouring hole 3 in the ladle and further, cast into a mold 12 from the intermediate pan 2. SOLUTION: In the method for judging the minimum opening degree of the pouring hole in the ladle and the judging instrument therefor, the opening degree of the pouring hole is judged to be the minimum opening degree 20 when the change with time of the intermediate pan weight 18 satisfies a preset lightening condition of the intermediate pan weight by gradually reducing the opening degree of the pouring hole 3 in the ladle while performing the pouring of the molten steel into the intermediate pan 2 from the ladle 1 and the casting of the molten steel into the mold 12 from the intermediate pan 2. As the intermediate pan weight 18, a weight obtained by removing a high frequency component from the actually measured value of the intermediate pan weight, is used.

7. 发明专利

JP2001323315A METHOD FOR DECARBURIZING-REFINING CHROMIUM CONTAINED MOLTEN STEEL 失效
公开(公告)号：JP2001323315A
公开(公告)日：2001-11-22
申请号：JP2000142189
申请日：2000-05-15
申请人： NIPPON STEEL CORP
发明人： NAKAO RYUJI , TANAKA TOMOAKI , KINOSHITA YOSUKE , NAGATA SEIJI
IPC分类号： C21C7/068 , C21C7/00 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To efficiently perform the decarburization by reducing oxidizing loss of chromium in the decarburizing-refining of a chromium contained steel. SOLUTION: Molten steel temperature is continuously measured from the stating time of the decarburization and oxygen efficiency for decarburizing is continuously obtained from the measured molten steel temperature to perform the refining according to the oxygen efficiency for decarburizing. Further, the control of refining condition is performed so that ΔT in the following equation becomes >=30 deg.C. ΔT=(T+273.15)-(-13800/(-8.765 log ([%C] PCO/[%Cr]))). Wherein, T is the measured molten steel temperature, [%C] is [C] concentration (mass %) in the molten steel before measuring the temperature, PCO is partial pressure (atm) of CO gas in the atmosphere and [%Cr] is [Cr] concentration (mass %) in the molten steel before measuring the temperature.

8. 发明专利

JPS6082777A ELECTRIC RESISTIVE GRAPHITE CRUCIBLE 失效
公开(公告)号：JPS6082777A
公开(公告)日：1985-05-10
申请号：JP18932583
申请日：1983-10-12
申请人： NIPPON STEEL CORP
发明人： NAGATA SEIJI , TANABE YOSHIYUKI , FUJIKAWA AKIRA
IPC分类号： F27B14/06

9. 发明专利

JPS6158751B2 失效
公开(公告)号：JPS6158751B2
公开(公告)日：1986-12-12
申请号：JP18932583
申请日：1983-10-12
申请人： NIPPON STEEL CORP
发明人： NAGATA SEIJI , TANABE YOSHUKI , FUJIKAWA AKIRA
IPC分类号： F27B14/06

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