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1. 发明专利

JPS6215311B2 失效
公开(公告)号：JPS6215311B2
公开(公告)日：1987-04-07
申请号：JP2147077
申请日：1977-03-02
申请人： NIPPON KOKAN KK , SHINAGAWA SHIRORENGA KK
发明人： SHIMADA NOBURO , MYAMOTO AKIRA , KOBAYASHI MOTONOBU , KURIBAYASHI AKIO , TOYODA KOJI , KIMURA MORIHIRO , KYODA HIROSHI , HOSHINO SHUNSUKE , WATANABE JIRO
IPC分类号： B22D41/02 , F27D1/00

2. 发明专利

JPS6347323A DETECTION OF SLAG LEVEL 失效
公开(公告)号：JPS6347323A
公开(公告)日：1988-02-29
申请号：JP19028886
申请日：1986-08-13
申请人： NIPPON KOKAN KK
发明人： KURIBAYASHI AKIO , HIRANO MINORU , MIYAHARA HIROAKI , ISHIKAWA HIROAKI
IPC分类号： C21C5/46
摘要： PURPOSE:To enable quick and exact quantitative detection of a slag level by providing plural magnetic field generating coils are receiving coils horizontally and stepwise so as to face each other to the wall of a converter and measuring continuously the current values of the magnetic fields generated in the converter. CONSTITUTION:The magnetic field generating coils 4a-4c parted from each other at prescribed spacings are embedded horizontally in multiple stages to one side of the wall 1a of the converter 1 above the surface of a molten steel 2. The receiving coils 6a-6c are embedded horizontally in multiple stages to the other side of the wall 1a so as to face the coils 4a-4c. ACs are supplied from respective power sources 5a-5c to the magnetic field generating coils 4a-4c constituted in the above-mentioned manner to generate the magnetic fields A, B, C. The magnetic fields A, B, C are continuously measured by the receiving coils 6a-6c opposite to said coils and are displayed on ammeters 8a-8c via amplifiers 7a-7c. The current values of the magnetic fields C, B, A change successively when the foaming of the slag 3 in the converter 1 progresses. The slag level in the converter 1 is thus exactly detected and slopping is prevented.

3. 发明专利

JPS5779045A Mold for continuous casting of enlargeable ingot width during casting 失效
标题翻译：在铸造期间可连续铸造可充分铸锭宽度的模具
公开(公告)号：JPS5779045A
公开(公告)日：1982-05-18
申请号：JP15220180
申请日：1980-10-31
申请人： Nippon Kokan Kk
发明人： KURIBAYASHI AKIO , YAMAGAMI JIYUN , NAKASHIMA HIROHISA , OGURA YASUTSUGU
IPC分类号： B22D11/04 , B22D11/05
CPC分类号： B22D11/05
摘要： PURPOSE:To eliminate pressing of the inside surface of a bottom end to an ingot with respect to the retreat of the top end of short side and to facilitate enlarging operation for ingot width by providing a taper to the inside surface of the short side downward from the means connecting point on the bottom end side of the ingot width enlarging means at the top and bottom ends of a short side cooling member. CONSTITUTION:In enlarging ingor width, a short side cooling member 3' is retreated by operating only the driving means for tilting and parallel moving of an upper end side while keeping the connection point (b') on the lower end side fixed. At this time, the member 3' turns around the connection point (b') on the bottom end side, and the ingot is cast by virtually elminating pressing of the bottom end part of the inside surface of the member 3' to the outside surface of the ingot on account of a taper (t). The similar effect is also obtained by curving the inside surface of the member in such a way that the ingot width widens gradually toward the direction lower than the connection point (b') of the member 3'.
摘要翻译：目的：为了消除底端的内表面相对于短边顶端的后退的压迫，并且通过向短边的内表面提供锥形以便于宽度的扩大操作在短边冷却构件的顶端和底端处的锭宽度扩大装置的底端侧的装置连接点。构成：通过仅使用于上端侧的倾斜和平行移动的驱动装置，在使下端侧的连接点（b'）保持固定的同时，通过仅使驱动装置进一步缩小进给宽度来缩短短边冷却部件3'。此时，构件3'围绕底端侧的连接点（b'）转动，并且通过将构件3'的内表面的底端部实际上急剧地按压到外表面而铸造铸锭因为锥度（t）。通过使构件的内表面以使构件宽度朝向比构件3'的连接点（b'）的连接点（b'）低的方向逐渐变宽的方式获得同样的效果。

4. 发明专利

JPS56122650A CONTINUOUS MULTICASTING METHOD FOR STEEL 失效
公开(公告)号：JPS56122650A
公开(公告)日：1981-09-26
申请号：JP2758680
申请日：1980-03-05
申请人： NIPPON KOKAN KK
发明人： KURIBAYASHI AKIO
IPC分类号： B22D11/10
摘要： PURPOSE:To prevent the degradation of the quality of continuously cast ingots and the clogging of a tundish nozzle by adding the molten steel left in a ladle into the next and subsequent ladles and stirring the same by an inert gas then pouring this molten steel into the tundish in pouring the molten steel in the plural ladles successively into the same tundish at the continuous casting of steel. CONSTITUTION:Molten steel is poured successively and continuously from plural ladles into the tundish used with a continuous casting device. In this case, the pouring is stopped by leaving 3-20% the molten metal in the pouring ladle to prevent molten slag from entering the tundish. The residual molten steel is added into the next and subsequent ladles, and an inert gas is blown thereto to stir the molten steel, whereby Al2O3 formed at the pouring of the residual molten steel is slagged and the molten steel is cleaned; at the same time, the oxides formed are removed by adding Al. Staining of the continuously cast ingot with the Al2O3 which is a nonmetallic inclusion and the clogging of the tundish nozzle by the Al2O3 is prevented.

5. 发明专利

JPS56122648A CONTINUOUS MULTICASTING METHOD FOR STEEL 失效
公开(公告)号：JPS56122648A
公开(公告)日：1981-09-26
申请号：JP2758480
申请日：1980-03-05
申请人： NIPPON KOKAN KK
发明人： KURIBAYASHI AKIO
IPC分类号： B22D11/10
摘要： PURPOSE:To prevent the degradation of the quality of continuously cast ingots and the clogging of a tundish nozzle by adding the molten metal left in the ladle to the 3rd ladle after one in pouring the molten metal in the plural ladles successively to the same tundish at the continuous casting of steel. CONSTITUTION:Molten steel is poured successively and continuously from plural ladles into the tundish used in a continuous casting device. At this time, the pouring is stopped by leaving 3-20% the molten steel in the first ladle to prevent molten slag from entering the tundish. Since adding the residual molten steel in the next ladle requires a hoisting device for hoisting the same further upward, said steel is added into the 3rd ladle to eliminate the need for extra hoisting device. The molten steel in the 3rd ladle added with the residual molten steel is subjected to bubbling treatment and Al addition, whereby the Al2O3 produced at the adding of the residual molten steel is slagged, cleaned and component-controlled, thus the degradation of the quality of the continuously cast ingots and the clogging of the tundish nozzle by Al2O3 are prevented.

6. 发明专利

JPS5222522A CONTINUOUS CASTING METHOD OF BILLETS WITH CIRCULAR CROSS SECTION 失效
公开(公告)号：JPS5222522A
公开(公告)日：1977-02-19
申请号：JP9865675
申请日：1975-08-15
申请人： NIPPON KOKAN KK
发明人： SATOU HIDEKI , ISHIDA TOSHIAKI , KOTANINO TAKAYUKI , KURIBAYASHI AKIO , NAKAJIMA HIROHISA
IPC分类号： B22D11/10 , B22D11/103

7. 发明专利

JPH0479744B2 失效
公开(公告)号：JPH0479744B2
公开(公告)日：1992-12-16
申请号：JP19336783
申请日：1983-10-18
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , MYAHARA SHINOBU , TERADA OSAMU , HANMYO MASAYUKI , UCHIDA SHIGETAKA , WADA TSUTOMU , KOMATSU YOSHIMI , OBATA TATSUO , KITAGAWA TOORU , KURIBAYASHI AKIO , MIZUKAMI HIDEAKI
IPC分类号： B22D11/16 , B22D11/04 , B22D11/041 , B22D11/053

8. 发明专利

JPS6372811A METHOD FOR PREVENTING SLOPPING 失效
公开(公告)号：JPS6372811A
公开(公告)日：1988-04-02
申请号：JP21774186
申请日：1986-09-16
申请人： NIPPON KOKAN KK
发明人： KURIBAYASHI AKIO , HIRANO MINORU , MIYAHARA HIROAKI , ISHIKAWA HIROAKI
IPC分类号： C21C5/28
摘要： PURPOSE:To prevent occurrence of slopping caused by foaming slag by injecting inert gas into the foaming slag generating in a converter from a lance toward horizontal direction at the time of refining molten iron to molten steel in the converter providing a bottom blowing tuyere and the top blowing lance. CONSTITUTION:The molten iron 12 is charged into the converter 10 having the bottom blowing tuyere and slag making material, such as lime, etc., is added and the pure oxygen is blown from the bottom blowing tuyere and also the lance 16 is hung down in the converter to blow the pure oxygen on the surface of molten iron 12 from a nozzle 22 at the tip thereof, and C in the molten iron 12 is oxidized to refine to the molten steel by decarburization. In this case, the foaming slag 14 generated by the refining reaction is blown up by CO gas generated by the decarburizing reaction, to cause slopping. At the time of inserting the lance 16 by the increasing slag volume caused by foaming the viscous molten slag 14, it is detected by the detector. And, the inert gas 19, such as Ar, etc., is injected against the inner wall of converter from side holes 18 on the outer pipe of lance 16 and the oxygen concentration at this portion is reduced, to form reducing slag and the foaming is eliminated, and as CO is easily vented upward on the slag 14, the occurrence of slopping is prevented.

9. 发明专利

JPS6234460B2 失效
公开(公告)号：JPS6234460B2
公开(公告)日：1987-07-27
申请号：JP17888582
申请日：1982-10-12
申请人： NIPPON KOKAN KK
发明人： TSUCHIDA YUTAKA , KURIBAYASHI AKIO , NAKAJIMA HIROHISA , OZAWA KOICHI , NAKADA MASAYUKI , YANO KOZO
IPC分类号： B22D11/128 , B22D11/00 , B22D11/10 , B22D11/115 , B22D11/12

10. 发明专利

JPS5868456A PRODUCTION OF CLEAN STEEL 失效
公开(公告)号：JPS5868456A
公开(公告)日：1983-04-23
申请号：JP16702081
申请日：1981-10-21
申请人： NIPPON KOKAN KK
发明人： NAKADA MASAYUKI , MURAKAMI KATSUHIKO , YANO KOUZOU , KURIBAYASHI AKIO , OZAWA KOUICHI
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D11/118
摘要： PURPOSE:To obtain clean steel by efficient floatation of slag by blowing an inert gas into a tundish from its bottom surface in the direction intersecting orthogonally with the flow of the molten steel therein and regulating the agitating flow of the molten steel with a weir provided under the surface of the molten steel. CONSTITUTION:An inert gas is blown from a piping 6 through the refractories 5 of good permeability such as porous brick provided on the bottom surface 1a of a tundish 1 into the molten steel 2 flowing in the tundish from the upper stream side to the down stream side in the direction intersecting orthogonally with the flow of the steel 2 at 0.10-0.38 Nl/cm .min flow rate to agitate the steel 2 and to accelerate the floatation of inclusions. In parallel with said blowing, a weir 7 which is dipped in the steel 2 down to the position of 10-50% the depth of the steel 2 from the surface thereof is provided on the lower stream side near the position where said gas is blown in the direction intersecting orthogonaly with the flow of the steel 2 to regulate the agitating flow of the steel 2 generated by blowing of said inert gas and to accelerate the floatation of the inclusions additionally.

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