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1. 发明专利

JPH057918A DEVICE AND METHOD FOR ELIMINATING FOREIGN MATTER ON SURFACE OF STRIP 失效
公开(公告)号：JPH057918A
公开(公告)日：1993-01-19
申请号：JP16059291
申请日：1991-07-01
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： YANAI KAZUHIRO , OBARA SHINICHI , IKEDA KAZUO , SHODA SHUNJI , KOYAMA KENICHI , NORIKURA TAKASHI , TABATA SHUICHI , SAKANAKA TAKAO
IPC分类号： B08B1/02 , B08B5/04 , B21B45/02
摘要： PURPOSE:To manufacture a strip whose surface quality is excellent by eliminating a foreign matter on the surface of a strip. CONSTITUTION:A ventilative duct 10 is provided on suction ports 4, 5, an elastic body 8 is provided on the tip parts of these suction ports 4, 5, and also, this suction port is moved in the direction of the strip S plate width and the suction port covers the range of the inside of both ends of plate width, by which the sealing property of the strip S and the suction port is improved and a foreign matter on the surface of the strip is eliminated efficiently.

2. 发明专利

JPH05317A DEVICE FOR REMOVING FOREIGN MATTER ON STRIP SURFACE 失效
公开(公告)号：JPH05317A
公开(公告)日：1993-01-08
申请号：JP15053691
申请日：1991-06-21
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： YANAI KAZUHIRO , OBARA SHINICHI , IKEDA KAZUO , SHODA SHUNJI , KOYAMA KENICHI , NORIKURA TAKASHI , TABATA SHUICHI , SAKANAKA TAKAO
IPC分类号： B08B1/02 , B21B45/02
摘要： PURPOSE:To manufacture a strip having a superior surface quality by providing supporting bases which are movable in the direction orthogonally crossed with the advancing direction of the strip on both sides of press base frame by which belts are pressed towards a pass line. CONSTITUTION:On each upper and lower side partitioned by the pass line A-A, a pair of left and right reels 15, 16, and a belt 20 which is stretched between this pair of left and right reels, and the press base frame 4 by which the belt is pressed towards the pass line are provided. The supporting bases 5 are provided movably to the direction orthogonally crossed with the advancing direction of the strip on both sides of the press base frames 4. The belts 20 are made of a permeable material, plural sucking ports are provided in the direction orthogonally crossed with the advancing direction of the strip on the press base frames 4 and the supporting bases 5, and the sucking ports are connected to discharge ducts 11. Consequently, the uneven wear and damage to the belts are prevented, and the deterioration of the strip quality which is due to the foreign matters sticking to the strip again after once removed is prevented by sucking the foreign matters by a vacuum suction.

3. 发明专利

JPH04266409A ROLL POLISHING DEVICE AND ITS ARRANGING METHOD 失效
公开(公告)号：JPH04266409A
公开(公告)日：1992-09-22
申请号：JP2618691
申请日：1991-02-20
申请人： HITACHI LTD , NIPPON STEEL CORP
发明人： NORIKURA TAKASHI , KOYAMA KENICHI , SAKANAKA TAKAO , TABATA SHUICHI , IKEDA KAZUO , SHODA SHUNJI , YANAI KAZUHIRO , OBARA SHINICHI , MURAOKA KAZUO
IPC分类号： B21B28/04
摘要： PURPOSE:To offer a roll polishing device which is suitable to rolling manufacture a metallic band plate excellent in surface quality in rolling technique of metallic band plate. CONSTITUTION:A net-like polishing belt 20 is pressed against a roll 2 with a spongy elastic body 19 with a lot of spaces, foreign matters are stripped off with the belt 20 and held with the elastic body 19. The belt 20 is wound with reels 21, 22 and can be easily replaced with a newer belt 20 by unwinding. And, the elastic body 19 is freely attachable and detachable and can be easily replaced.

4. 发明专利

JP2003305547A Twin drum type continuous casting method and its apparatus 有权
标题翻译：双鼓式连续铸造方法及其设备
公开(公告)号：JP2003305547A
公开(公告)日：2003-10-28
申请号：JP2002106612
申请日：2002-04-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKEUCHI TOMOHIDE , YAMADA MAMORU , TANAGA TAKESHI , SHODA SHUNJI , IZU TADAHIRO , KOBAYASHI HIDEAKI
IPC分类号： B22D11/06 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To prevent formation of burrs at the both end parts of a cast slab and the ooze of molten steel from the lower ends of a pair of side weirs in conducting the continuous casting method of a twin drum type, where a thin cast strip is cast with the pair of side weirs being shifted upwards as pressed against both end-faces of a pair of drums.
SOLUTION: The formation of burrs is detected by measuring, with a plate- thickness gauge, the increase margins of plate-thickness at the width end-parts of a thin cast strip S discharged from the gap of drums 1, 1. The ooze of molten steel from the width end-part of the cast slab is detected by measuring the extension margin of width of the cast slab with a plate-width gauge 5 or by measuring the rise margins of temperature of the width end-parts of the cast slab. When the burrs are formed, the ascending speed of the side weirs 2 is increased and/or the pressing speed of the weirs 2 is decreased by a controller 7. When the molten steel oozes, the ascending speed of the weirs 2 is decreased and/or the pressing speed of the weirs 2 is increased.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止铸造板坯的两端部产生毛刺和从一对侧堰的下端出来的钢液的渗出，进行双滚筒式连续铸造，其中铸造的薄钢带被铸造，一对侧堰向上移动，压在一对鼓的两个端面上。
解决方案：通过使用板厚度计测量从鼓1,1的间隙排出的薄铸造带S的宽度端部处的板厚的增加边缘来检测毛刺的形成。通过用板宽度测量仪5测量铸坯宽度的延伸裕度，或通过测量宽度端部的温度上升幅度来检测来自铸坯宽度端部的钢水渗出铸造板。当形成毛刺时，侧堰2的上升速度增加和/或堰2的按压速度由控制器7降低。当钢水渗出时，堰2的上升速度减小和/ 或者堰2的按压速度增加。版权所有（C）2004，JPO

5. 发明专利

JPH11290930A METHOD FOR ABSORBING LEAKAGE CURRENT OF INDUCTION HEATING DEVICE FOR STRIP EDGE AND INDUCTION HEATING DEVICE FOR STRIP EDGE 失效
公开(公告)号：JPH11290930A
公开(公告)日：1999-10-26
申请号：JP10655398
申请日：1998-04-16
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： SHODA SHUNJI , NOHARA YOSHIKATSU , MIYAKE KATSUYOSHI , TSURUSAKI KAZUYA , ASAHARA YUJI
IPC分类号： H05B6/10 , B21B15/00 , B21B45/00 , C21D1/42 , C21D9/60
摘要： PROBLEM TO BE SOLVED: To make it possible to stably heat by interrupting the leakage current of an eddy current to a metallic roll while preventing a spark from generating when heating the strip edge by the induction heating device using a C-type inductor. SOLUTION: The method for absorbing the leakage current of the heating treatment device for the strip edge and absorbing devices 6a and 6b for the leakage current, are provided as follows; that is, in the induction heating device for the strip edge, using the C-type inductor, on metallic rolls 7 supporting the strip on the inlet and outlet of the inductor, a pair of short-circuit rolls 8a and 8b connected through conductors are arranged, and by bringing the short-circuit rolls 8a and 8b into press contact with tip parts on both sides of the strip to be subjected to induction heating, the leakage current of the eddy current being made to flow through the strip, is bypassed.

6. 发明专利

JPH0929395A MANUFACTURE OF STAINLESS STEEL STRIP BY CONTINUOUS CASTING HOT ROLLING AND HEAT TREATMENT FURNACE THEREFOR 失效
公开(公告)号：JPH0929395A
公开(公告)日：1997-02-04
申请号：JP18998895
申请日：1995-07-26
申请人： NIPPON STEEL CORP
发明人： NOHARA YOSHIKATSU , SHODA SHUNJI
IPC分类号： B21B3/02 , B21B20060101 , B21B1/46 , B21B45/00 , B22D20060101 , B22D11/06 , B22D11/12 , B22D11/124 , B22D11/20 , C21D20060101 , C21D8/02 , C21D9/46 , C21D9/56 , C22C20060101
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for a stainless steel strip by the continuous casting and hot rolling capable of manufacturing the stainless steel strip capable of refining the re-crystallized grain size and excellent in the surface quality and the inner structure at a low cost when the casting thickness is changed in flying during the continuous casting, and to provide a heat treatment furnace to implement the method. SOLUTION: When the casting slab thickness is reduced in flying the casting arc angle is reduced, and the casting speed is reduced, and the heat treatment length of a heat treatment furnace 7 and the cooling length of a cooling zone are reduced, and the opening between the drums is reduced to achieve the continuous casting, and the heat treatment length and the cooling length are increased to the prescribed length. When the casting slab thickness is increased in flying, the opening between the drums is increased while the heat treatment length of the heat treatment furnace 7 and the cooling length of the cooling zone are reduced with the normal casting arc angle, and the casting speed is reduced to achieve the continuous casting, and the heat treatment length of the heat treatment furnace 7 and the cooling length of the cooling zone are increased to the prescribed values.

7. 发明专利

JPH0919748A METHOD FOR PREVENTING MEANDERING OF CAST STRIP 失效
公开(公告)号：JPH0919748A
公开(公告)日：1997-01-21
申请号：JP19406095
申请日：1995-07-07
申请人： NIPPON STEEL CORP
发明人： ARAI TAKASHI , YAMADA MAMORU , SHODA SHUNJI , KIRIHARA MASASHI
IPC分类号： B22D11/12 , B21B1/22 , B21B1/46 , B21B37/68 , B21B39/08 , B21B39/14 , B22D11/06 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To prevent the meandering of a cast strip by adjusting tension of the cast strip at the front of a rolling mill to suitable range, at the time of feeding the cast strip continuously cast by using cooling rolls to the rolling mill. SOLUTION: A positional detector 9 is arranged so as to approach a roll driving cylinder 8 connected with the shafts of the cooling rolls 1, and a signal of the roll gap with the positional detector 9 is inputted into an arithmetic control unit 10 as the cast strip thickness. In the arithmetic control unit 10, a line tension of the cast strip S is operated and air pressure supplied to a brake device 7 is operated by using the calculated line tension. The air pressure supplied to an air cylinder of the brake device 7 is adjusted by adjusting a pressure control valve 11 with a control signal of the calculated air pressure to adjust the brake force of the brake device 7. In this way, the tension of the cast strip S in the front of the rolling mill 5 is adjusted in the range of 0.3-1.5kgf/mm .

8. 发明专利

JPH05331699A METHOD FOR DESCALING FROM FERRITIC STAINLESS ANNEALED STEEL STRIP 失效
公开(公告)号：JPH05331699A
公开(公告)日：1993-12-14
申请号：JP10708892
申请日：1992-04-24
申请人： NIPPON STEEL CORP
发明人： OIKAWA YUSUKE , NAKADA SHIOO , MATSUHASHI AKIRA , NAGASHIMA SHOJI , TANAGA TAKESHI , SHODA SHUNJI , KUNIOKA SHINYA
IPC分类号： C25F1/06
摘要： PURPOSE:To provide means solving the problem of the conventional technique requiring much time for neutral salt electrolytic descaling for a ferritic stainless annealed steel strip contg. one or more kinds among Nb, Ti and Mo, executing perfect descaling in an extremely short time and reducing the investment cost. CONSTITUTION:A steel strip is subjected to electrolysis in a neutral salt soln. of pH 0 to 3 having a pickling degree higher than that in the conventional method, is thereafter immeresed in a soln. of nitric-hydrofluoric acid and is pickled. In this way, the ferritic stainless annealed steel strip contg. one or more kinds among Nb, Ti and Mo can be subjected to continuous descaling at a high speed by using the stages of neutral salt electrolysis and immersing and pickling in nitric-hydrofluoric acid and without using additional stages.

9. 发明专利

JPH05247700A 失效
公开(公告)号：JPH05247700A
公开(公告)日：1993-09-24
申请号：JP4736392
申请日：1992-03-04
申请人： NIPPON STEEL CORP
发明人： MATSUHASHI AKIRA , ITO TORU , NAKADA SHIOO , OIKAWA YUSUKE , NAGASHIMA SHOJI , SHODA SHUNJI , KUNIOKA SHINYA
IPC分类号： C25F1/06
摘要： PURPOSE:To execute descaling in a short time and to obtain a lustrous surface by subjecting a stainless annealed steel strip to electrolytic treatment under prescribed conditions with an aq. soln. of sodium sulfate as an electrolyte and thereafter immersing it in a mixed soln. of nitric acid and hydrofluoric acid. CONSTITUTION:An electrolyte contg. 50 to 250g/l sodium sulfate and whose pH is regulated to zero to 3 by sulfuric acid is held to 70 to 90 deg.C. By using this electrolyte, a stainless annealed steel strip is subjected to electrolytic treatment at a current density of its passivation current density or above while a brush roll is applied to the surface. In succession to this electrolytic treatment, the steel strip is furthermore immersed in a mixed soln. of nitric acid and hydrofluoric acid and is treated.

10. 发明专利

JP2004141940A Method of manufacturing austenitic stainless steel and thin strip cast slab 有权
公开(公告)号：JP2004141940A
公开(公告)日：2004-05-20
申请号：JP2002310624
申请日：2002-10-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： ISHIMARU EIICHIRO , SHODA SHUNJI , INOUE SHUICHI , ISAKI HIROSHI , IZU TADAHIRO
IPC分类号： B22D11/00 , B22D11/06 , C21D8/02 , C22C38/00 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To manufacture austenitic stainless steel to which magnetization is imparted as a new property without impairing mechanical characteristics or surface properties.
SOLUTION: In the synchronous continuous casting process of austenitic stainless steel, atmospheric temperature directly under a drum and/or a pressing force between cooling drums are controlled so that the slab temperature directly under the drum becomes 1,250°C or higher, thereby making the amount of δ ferrite to be not less than 2% and below 15% and making the total of the regions where Cr segregation is above 0.9 and below 1.10 to be less than 88%.
COPYRIGHT: (C)2004,JPO

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