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1. 发明专利

JP2005230848A Method and apparatus for continuously casting molten metal 有权
标题翻译：连续铸造金属的方法和装置
公开(公告)号：JP2005230848A
公开(公告)日：2005-09-02
申请号：JP2004041859
申请日：2004-02-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TANI MASAHIRO , HARADA HIROSHI , FUJI TAKEHIKO , MIMURA YOSHITO , OKUMURA HIROHIKO
IPC分类号： B22D11/11 , B22D11/10 , B22D11/108
摘要： PROBLEM TO BE SOLVED: To provide a casting method and a casting apparatus with which regarding the method and the apparatus for continuously casting a cast slab from molten metal, a meniscus state on the molten metal is stabilized and the improving effects of lubrication and surface characteristic of the cast slab can stably be improved by limiting a relation of the distance between the inner wall of a mold and the outer wall of a molten metal pouring nozzle and the penetrating depth into the molten metal of an impressed AC magnetic field.
SOLUTION: In the method for continuously casting the metal cast slab, by which AC is energized to a solenoid type electromagnetic coil disposed so as to surround the mold or to the solenoid type electromagnetic coil embedded into the mold wall and the electromagnetic force is impressed to the molten metal in the mold and the casting is performed while changing the meniscus shape, the shortest distance between the inner wall of the mold and the molten metal pouring nozzle, is changed according to the penetrating depth into the molten metal of the electromagnetic force.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于从熔融金属连续铸造铸坯的方法和装置的铸造方法和铸造装置，使熔融金属上的弯液面状态稳定，并且润滑的改善效果通过限制模具的内壁与熔融金属浇注嘴的外壁之间的距离与渗透的AC磁场的熔融金属的穿透深度的关系，能够稳定地提高铸造板的表面特性。解决方案：在连续铸造金属铸造板坯的方法中，通过该方法将AC通电到围绕模具设置的螺线管型电磁线圈或嵌入到模具壁中的螺线管型电磁线圈和电磁力对模具中的熔融金属施加压力，同时改变弯液面形状，模具内壁和熔融金属浇注嘴之间的最短距离根据穿入深度进入熔融金属的渗透深度而进行电磁力。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005230847A Method for continuously casting molten metal 有权
标题翻译：连续铸造金属的方法
公开(公告)号：JP2005230847A
公开(公告)日：2005-09-02
申请号：JP2004041858
申请日：2004-02-18
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TANI MASAHIRO , FUJI TAKEHIKO , UMETSU KENJI , MIMURA YOSHITO , OKUMURA HIROHIKO
IPC分类号： B22D11/11 , B22D11/10 , B22D11/114 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a casting method, by which regarding the method for continuously casting a cast slab from molten metal, a meniscus state on the molten metal is stabilized and improving effects of lubrication and surface characteristic of the cast slab can stably be obtained by changing the dipping depth of a molten metal pouring nozzle according to the distribution of magnetic flux density to the casting direction in a mold.
SOLUTION: In the method for continuously casting the molten metal, by which AC is energized to a solenoid type electromagnetic coil disposed so as to surround the mold or to the solenoid type electromagnetic coil embedded into the mold wall, and the electromagnetic force is impressed to the molten metal in the mold and the casting is performed while changing the meniscus shape, the position of a spouting hole of the molten metal pouring nozzle is adjusted according to the distribution of the magnetic flux density in the casting direction in the mold.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种铸造方法，通过该方法，关于从熔融金属连续铸造铸坯的方法，使熔融金属上的弯液面状态稳定，并且铸造板坯的润滑和表面特性的改善效果可以通过根据在模具中的磁通密度分布到铸造方向改变熔融金属浇注嘴的浸入深度来稳定地获得。解决方案：在连续铸造熔融金属的方法中，通过AC将电力供给到围绕模具设置的螺线管式电磁线圈或嵌入到模具壁中的螺线管型电磁线圈，并且电磁力对模具中的熔融金属施加压力，并且在改变弯液面形状的同时进行铸造，根据模具中的铸造方向上的磁通密度的分布来调整熔融金属浇注嘴的喷射孔的位置。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2009161845A Method for pretreatment of scrap 审中-公开
标题翻译： SCRAP预处理方法
公开(公告)号：JP2009161845A
公开(公告)日：2009-07-23
申请号：JP2008003171
申请日：2008-01-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： WATANABE KUNIHIKO , OTANI YASUHIKO , YAMADA WATARU , MIMURA YOSHITO , SAITO KAZUAKI
IPC分类号： C22B1/00 , B09B3/00 , B09B5/00 , F27D13/00 , F27D17/00
CPC分类号： Y02P10/214 , Y02P10/234 , Y02P10/265 , Y02P10/283
摘要： PROBLEM TO BE SOLVED: To provide a method for pretreatment of low grade scrap by which, when using low grade scrap containing organic matters in the scrap as a main charging raw material for a steelmaking furnace, flame initiation at steelmaking furnace charging can be prevented and the organic matters contained in the scrap can be reused as a resource and treatment can be carried out inexpensively. SOLUTION: This invention relates to a method for pretreating, before charging, the scrap to be charged into a steelmaking furnace and characterized in that the scrap is heated using superheated steam to melt or pyrolyze the organic matter contained in the scrap. It is preferable that the temperature of the superheated steam is 300 to 800°C. A melt or pyrolysis gas, resulting from the melting or pyrolysis of the organic matter, is separated from the scrap. It is preferable that the superheated steam is produced by using steam generated from dust collecting equipment for exhaust gas from a steelmaking furnace and further heating it. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种低品位废料的预处理方法，其中当使用废料中含有机物的低品位废料作为炼钢炉的主要装料原料时，炼钢炉装料时的火焰起始废弃物中所含的有机物质可以作为资源再利用，能够廉价地进行处理。解决方案：本发明涉及一种用于在装料之前将要装入炼钢炉中的废料进行预处理的方法，其特征在于，使用过热蒸汽加热废料以熔化或热解包含在废料中的有机物。过热蒸汽的温度优选为300〜800℃。由有机物的熔化或热解产生的熔融或裂解气体与废料分离。过热蒸汽优选通过使用来自炼钢炉的废气的集尘装置产生的蒸汽进一步加热。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JPH05200506A PLUGGING STRUCTURE IN NOZZLE FOR POURING MOLTEN METAL 失效
公开(公告)号：JPH05200506A
公开(公告)日：1993-08-10
申请号：JP3127792
申请日：1992-01-23
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： NISHIHARA RYOJI , KIMURA TAKESHI , MIMURA YOSHITO , NISHI TAKASHI , EGAMI JUN
IPC分类号： B22D11/10 , B22D41/46
摘要： PURPOSE:To provide a plugging structure in a nozzle for pouring molten metal, in which the generation of non-metallic inclusions in molten steel is reduced and the immediate opening performance of the nozzle hole can be kept. CONSTITUTION:In the plugging structure in the nozzle, in which particles mainly containing SiO2 are used as an upper layer plugging material, by using the plugging structure in the nozzle for pouring the molten metal composed of particles containing 60-100% Al2O3 and >=0.3mm grain size as a lower layer plugging material, the development of the non-metallic inclusions in the molten steel is reduced and the immediate opening performance of the nozzle hole can be improved. By using the Al2O3 particles having >=0.3mm grain size, the Al2O3 particle itself is difficult to become the inclusion and further, the inclusion by reaction with Al in the molten steel is not generated. Further, as Al2O3 particle is difficult to sinter and is difficult to react with the slag component, the excellent immediate opening performance of the nozzle hole is obtd.

5. 发明专利

JPH02155552A METHOD FOR CONTROLLING CUTTING LENGTH IN CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPH02155552A
公开(公告)日：1990-06-14
申请号：JP30867488
申请日：1988-12-06
申请人： NIPPON STEEL CORP
发明人： MIMURA YOSHITO , MIHARA HIRONOBU , TAKAHASHI TAKAHARU
IPC分类号： B22D11/16
摘要： PURPOSE:To enable the optimum combination of cast slabs by executing wt. correction with the actual measured size to decide cutting position, executing correction of assumption and combination of the actual measured wt. of the strand with the predicted size and deciding the cutting cast slab at the next time. CONSTITUTION:A wt. correction arithmetic part 22 calculates casting thickness by using surface temp. from a thermometer 31, cast slab width from a width meter 24 and casting velocity from pinch roll group 14 and inputs to execute the wt. correction calculation. The arithmetic part 22 inputs the cast slab length to the the next cutting object from a processing part 23, but in this method, the solidified calculation model is built in, and by using the above casting thickness, actual pressure and surface temp., the cross section of the cast slab, further, the cast slab length are calculated to obtain the corrected position to be cut. This result is transmitted to a cutting machine control device 16 through the cutting length deciding position 21 and cutting machine 15 is worked at this position. The processing part 23 inputs the cast slab group taken out from the strand, and the assumption of the actual measured wt. of the strand with the actual measured size, the correction of combination of the cast slab taken from each strand and decision of the cutting cast slab at the next time are executed.

6. 发明专利

JPS57193273A CONTROL METHOD FOR BRAKING FORCE IN CONTINUOUS COMPRESSION CASTING 失效
公开(公告)号：JPS57193273A
公开(公告)日：1982-11-27
申请号：JP7751081
申请日：1981-05-22
申请人： NIPPON STEEL CORP
发明人： MIMURA YOSHITO , MAOKA HIROO , SHIMOMURA KENSUKE , ARITA HIDEMICHI , MIURA SHIGERU
IPC分类号： B22D11/20 , B22D11/128
摘要： PURPOSE:To maintain desired compressive forces while preventing the generation of slips by controlling the braking forces of respective braking rolls in accordance with the upper limit of the total braking force calculated in accordance with the actual values when slips are generated during casting. CONSTITUTION:An ingot 1 drawn out from the mold 2 of a curved type continuous casting machine by driving rolls 3 is compressed by receiving the braking forces in the direction reverse from the drawing direction by braking rolls 4. The ratios of the driving forces or braking forces of the rolls and the reaction of the rolls when slips are generated are determined with each roll during drawing of the ingot, and the max. permissible values of the driving or braking forces of said rolls are calculated from the product of said ratios and the max. permissible pressures of the rolls upon the ingot. Further, the smaller value of the calculated value of the force obtained by subtracting the total resistance force of ingot drawing from the sum of the total of the max. permissible braking force of the respective rolls and the thrust by the own weight of the ingot or the total of the max. permissible braking forces of the above-mentioned respective braking rolls is used as the upper limit value for the total braking force to up applied upon the ingot.

7. 发明专利

JP2001181725A METHOD FOR MODIFYING SLAG IN REFINING OF MOLTEN STAINLESS STEEL 失效
公开(公告)号：JP2001181725A
公开(公告)日：2001-07-03
申请号：JP36925499
申请日：1999-12-27
申请人： NIPPON STEEL CORP
发明人： SHINKAI AKIO , KUWATORI HIDEHIRO , MIMURA YOSHITO , MIYAMOTO KENICHIRO
IPC分类号： C22B7/04 , C21C5/36 , C21C7/00 , C21C7/04 , C21C7/068
摘要： PROBLEM TO BE SOLVED: To provide a modifying method for slag in the refining of molten stainless steel, in which chromium oxide contained in the slag developed when performing the decarburize-refining of the molten stainless steel, is efficiently reduced and recovered into the molten stainless steel, and the powdering caused by the reduction and the expansion of the chromium contained in the slag is improved and the slag can be used as a resource. SOLUTION: In the modifying method for the slag at the refining of the molten stainless steel by using a refining furnace 10, the ratio of Al2O3 concentration to the basicity of the slag is regulated to >=10.

8. 发明专利

JP2001234226A METHOD FOR TREATING REFINING SLAG FOR MOLTEN STAINLESS STEEL 失效
公开(公告)号：JP2001234226A
公开(公告)日：2001-08-28
申请号：JP2000047289
申请日：2000-02-24
申请人： NIPPON STEEL CORP
发明人： SHINKAI AKIO , KUWATORI HIDEHIRO , MIMURA YOSHITO , MIYAMOTO KENICHIRO
IPC分类号： C21C5/28 , C21C5/52 , C21C7/00
摘要： PROBLEM TO BE SOLVED: To provide a method for treating refining slag of molten stainless steel which is capable of reducing the amount of the chromium included in the slag, improving the expandability of the slag and executing resource recover by recovering the chromium in the molten iron by efficiently reducing the chromium oxide in the slag formed during the decarburization refining of the molten stainless steel. SOLUTION: After the molten iron 11 is charged into the vessel 13 in which the slag 12 and 12a formed by the decarburization refining of the molten stainless steel are received, an aluminum-containing material is added to the slag 12 and 12a and the slag 12 and 12a are heated under stirring, by which the chromium oxide in the slag 12 and 12a is reduced and the chromium is recovered into the molten iron 11.

9. 发明专利

JP2000102847A MOLTEN CHROME STEEL CASTING METHOD 失效
公开(公告)号：JP2000102847A
公开(公告)日：2000-04-11
申请号：JP28891098
申请日：1998-09-25
申请人： NIPPON STEEL CORP
发明人： FUKUNAGA SHINICHI , NISHIHARA RYOJI , TANAKA KAZUHISA , MIMURA YOSHITO , MOROHOSHI TAKASHI , KOSHO KOICHI
IPC分类号： B22D11/128 , B22D11/10 , B22D11/115 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a molten chrome steel casting method wherein the molten chrome steel can be manufactured with a simple manufacturing process at low cost by eliminating such imperfections as center porosity and sag of a billet. SOLUTION: In a molten chrome steel casting method for manufacturing a bloom size billet, a molten chrome metal 11 containing Cr at 10-20 wt.% is injected in a mold 14 and passed through plural billet supporting segments 16a-16k, 17a-17k installed at down stream side of the mold 14 for supporting a billet 15 wherein a solid shell is formed, and further through a pressurizing belt 21 installed at down stream side thereof. The molten metal 11 in the mold 14 and/or unsolidified molten metal passing through the supporting segments 16b-16k, 17b-17k, with exception of the highest part supporting segments 16a, 17a to be exchanged at a mold exchanging time, are solidified by electromagnet agitation in a manner that equiaxed grain ratio of the billet 15 is made in a range of 10-80% when it is solidified. The billet 15 is lightly pressurized with the pressurizing belt 21.

10. 发明专利

JPS6483354A DEVICE FOR DETECTING TEMPERATURE DISTRIBUTION OF CAST BILLET 失效
公开(公告)号：JPS6483354A
公开(公告)日：1989-03-29
申请号：JP24133487
申请日：1987-09-25
申请人： NIPPON STEEL CORP
发明人： YAMAZAKI KUNIYOSHI , KATAOKA SEISUKE , MIMURA YOSHITO
IPC分类号： B22D11/16 , G01K7/00 , G01K13/00
摘要： PURPOSE:To increase an estimated accuracy and to smooth the control in cooling by directly knowing the three dimensional distribution of the boundary between the liquid phase and solid phase of a cast billet with nondestruction at real time. CONSTITUTION:A host computor 9 gives casting conditions data to a casting control computor 10, which performs a molten steel pouring control, the cooling control of a mold 2, the drawing speed control of a cast billet 3, the cooling control of a cooling zone 4, the cooling control of an air, water spray polling zone 5, the cutting control of the cast billet 3, etc., based on the state data from each part of up to the air, water spray cooling zone 5 from a tundish 1 and up to the cutting device thereafter. A solidification thickness profile computor 12 calculates a temp. variation arithmetic parameter by requesting the data held by the computor 10 at the specified period based on sampling period data, giving it to a temp. distribution computor 13 and operating the temp. transition of each section at a short time partition. The temp. distribution computor 13 calculates the temp. transition of one section 15 point simultaneously in parallel. A profile processing computer 14 executes a three dimensional display on one color display.

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