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1. 发明专利

JP2002263802A CONTROL METHOD FOR PUSHING DOWN SIDE WEIR IN TWIN-DRUM TYPE CONTINUOUS CASTING 失效
公开(公告)号：JP2002263802A
公开(公告)日：2002-09-17
申请号：JP2001072454
申请日：2001-03-14
申请人： NIPPON STEEL CORP
发明人： ARAI TAKASHI , TSUKAMOTO RYUTA
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To provide a control method for pushing down a side weir, in which linear grooves are prevented from being generated and gown on a refractory of the side weir along the outer periphery of a cooling drum, in a twin-drum type continuous casting. SOLUTION: In the twin-drum type continuous casting, in which molten steel is poured into a molten steel pool part formed of a pair of cooling drums having parallel axes and rotated in the mutually reverse direction and the side weirs, and while cooling and solidifying the molten steel on the peripheral surfaces of the cooling drums, a thin cast slab is continuously cast, the reaction acted to the side weir is detected and the pushing-down to the side weir is controlled based on the variation of this reaction. The variation of the reaction is a climb gradient and the climb gradient is calculated by performing a moving- average arrangement to this reaction.

2. 发明专利

JP2005111523A Method and instrument for detecting hot-line in twin-roll type strip continuous casting apparatus 审中-公开
标题翻译：用于检测双辊型连续铸造装置中的热线的方法和仪器
公开(公告)号：JP2005111523A
公开(公告)日：2005-04-28
申请号：JP2003349395
申请日：2003-10-08
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SORAO KENJI , HOSHINO TAKEO , TSUKAMOTO RYUTA , SHODA SHUNJI , IZU TADAHIRO
IPC分类号： B22D11/06 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a detecting method and its instrument with which in a twin-roll type strip continuous casting apparatus for producing a thin-plate-like cast strip, the defective shape of the cast strip with a hot-line can surely be detected.
SOLUTION: In the twin-roll type continuous casting facility for producing the thin-plate-like cast strip, the generation of the hot-line can quickly and surely be detected by judging whether or not the increasing rate of rolling speed and increasing term during operating exist in a hot-line generating range on a map for mapping relation of the increasing rate of rolling speed and the increasing term, or by judging whether or not an inequality using the increasing rate of the rolling speed and the increasing term during operating as the variable, is satisfied.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种检测方法及其仪器，在用于生产薄板状铸造带的双辊型条带连续铸造设备中，具有热轧钢板的缺陷形状，线可以肯定地被检测到。解决方案：在用于制造薄板状铸造带的双辊式连续铸造设备中，通过判断轧制速度和轧制速度的增加速度是否可以快速可靠地检测热线的产生操作中的增加项存在于地图上的热线生成范围中，用于绘制轧制速度的增长率与增加项的映射关系，或者通过判断使用轧制速度的增加率和增加项的不等式在作为变量的操作期间，满足。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003039108A Method for controlling meandering of thin strip cast slab 审中-公开
标题翻译：用于控制薄条坯的测量方法
公开(公告)号：JP2003039108A
公开(公告)日：2003-02-12
申请号：JP2001224789
申请日：2001-07-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： INOUE SHUICHI , SHODA SHUNJI , TSUKAMOTO RYUTA
IPC分类号： B22D11/06 , B21B37/00 , B21B37/58 , B21B37/68 , B21C51/00 , B22D11/12 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling meandering of a thin strip cast slab when the thin strip cast slab manufactured by a bi-drum type continuous casting machine is rolled by a hot-rolling mill and is coiled. SOLUTION: In the method for controlling meandering of the thin strip cast slab manufactured by the bi-drum type continuous casting mill, a meandering amount of the thin strip cast slab is detected in at least two places of the inlet side of the hot-rolling mill and based on the difference of the meandering amount, a bilateral gap difference in the hot rolling mill is adjusted to correct the meandering of the thin strip cast slab. Preferably detection of the meandering amount is performed in at least two places sandwiching the pinch roll (the nearest is preferred) in the inlet side of the hot rolling mill. And, by detecting the speed of the pinch roll, and based on the difference between the detection speed and meandering amount, a bilateral drafting amount of the pinch roll and/or a bilateral gap difference of the hot rolling mill are/is preferably adjusted.
摘要翻译：要解决的问题：提供一种当通过双辊式连续铸造机制造的薄带铸坯由热轧机轧制并卷绕时，控制薄带钢板坯的弯曲的方法。解决方案：在双辊式连续铸造机制造的薄带铸坯的曲折控制方法中，在热轧入口侧的至少两个位置检测出弯曲量的薄带钢板坯根据蜿蜒数量的差异，调整热轧机的双边间隙，以校正薄带钢板的曲折。优选地，在热轧机的入口侧的夹送辊（最优选）中至少两个位置进行蜿蜒量的检测。并且，通过检测夹送辊的速度，并且基于检测速度和曲折量之间的差异，优选地调整夹送辊的双边牵伸量和/或热轧机的双边间隙差。

4. 发明专利

JP2000280049A TWIN DRUM TYPE CONTINUOUS CASTING METHOD AND DEVICE 失效
公开(公告)号：JP2000280049A
公开(公告)日：2000-10-10
申请号：JP2000015245
申请日：2000-01-25
申请人： NIPPON STEEL CORP
发明人： ODA TAKASHI , IZU TADAHIRO , TSUKAMOTO RYUTA
IPC分类号： B22D11/06 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To prevent a molten metal ooze out and a bulging at a billet end part due to an insufficient solidification while manufacturing the thin billet of homogenous quality in a width direction by uniformalizing a solidification condition in the width direction of the thin billet at a twin drum type continuous casting for manufacturing a thin billet. SOLUTION: A width direction temperature distribution signal of a thin billet S measured by a thermometer 7 is taken into a temperature deviation judging device 9. A sweeping position is specified from a temperature deviation between an average value of the measured temperature in a billet width direction and each of billet width portion and, the indication is transmitted to a control device 11. The device 11 shifts the sweeping device 4 in a drum shaft direction for sweeping an oxidized film on the drum peripheral surface with a rotation brush 45 so as to uniformalize a solidification state by uniformalizing thermal resistance of a drum interface in the drum axial direction.

5. 发明专利

JP2000237847A METHOD AND DEVICE FOR CONTROLLING HEATING TEMPERATURE OF SIDE WEIR 失效
公开(公告)号：JP2000237847A
公开(公告)日：2000-09-05
申请号：JP3970099
申请日：1999-02-18
申请人： NIPPON STEEL CORP
发明人： IZU TADAHIRO , TSUKAMOTO RYUTA
IPC分类号： B22D11/06 , B22D11/04 , B22D11/055
摘要： PROBLEM TO BE SOLVED: To minimize the development of hot band and to produce a sound thin cast slab by optimizing the temp. of a side weir in a twin roll type continuous casting. SOLUTION: In the twin roll type continuous casting for producing the thin cast slab, a side weir temp. control method in which the side weir is divided into vertically two pieces and heated while making the temp. difference between the upper part 2 of the side weir 1 and the lower part 3 of the side weir 1 at the initial stage of the casting, is adopted. Further, the temp. at the lower part 3 of the side weir is higher than the temp. at the upper part 2 of the side weir, and desirably, by heating it at the temp. higher by 100-300 deg.C the solidified shell thickness at the lower part 3 of the side weir is made thin and the heat band caused by penetration of molten metal is restrained.

6. 发明专利

JP2001212654A BRUSH PUSHING METHOD IN TWIN DRUM TYPE CONTINUOUS STRIP CASTING 失效
公开(公告)号：JP2001212654A
公开(公告)日：2001-08-07
申请号：JP2000025491
申请日：2000-02-02
申请人： NIPPON STEEL CORP
发明人： ARAI TAKASHI , TSUKAMOTO RYUTA
IPC分类号： B22D11/06 , B22D43/00
摘要： PROBLEM TO BE SOLVED: To provide a cleaning method for the surrounding surface of cooling drums in twin drum type continuous strip-like casting, which prevents defects on the cast surface, and makes the cooling drum and the rolling brush have longer life by controlling the damage of the drum surface and the rolling brush, when contaminants adhered to the cooling drum surface are removed. SOLUTION: This rolling brush pushing method in the twin drum type continuous strip casting is characterized in that the rolling brush is continuously or step by step pushed onto the surrounding surface of the cooling drum in 0.4-0.6 times pushing speed to the brush roll diameter reducing speed measured. And the brush pushing speed V is defined by formula (1) V=(k/2)*(r/r0)*(d/d0): (1) Hence, k: normal brush diameter reducing speed, r0: normal brush rotation number, r: measured brush rotation number, d0: normal brush diameter, and d: measured brush diameter.

7. 发明专利

JP2000326057A INSTRUMENT AND METHOD FOR DETECTING LOOP STATE OF CAST SLAB UNDER TWIN ROLLS, AND DEVICE AND METHOD FOR CONTROLLING MEANDERING OF THE CAST SLAB 失效
公开(公告)号：JP2000326057A
公开(公告)日：2000-11-28
申请号：JP14192799
申请日：1999-05-21
申请人： NIPPON STEEL CORP
发明人： KUBOYAMA YOICHI , TSUKAMOTO RYUTA
IPC分类号： B22D11/06 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To stably detect the loop amount under cooling rolls by detecting in a non-contacting state the loop-state of a strip-like cast slab fed out from the cooling rolls. SOLUTION: In a method for detecting the loop state of the cast slab under twin rolls in twin roll type continuous casting equipment, the cast slab 2 below the cooling rolls 1 is picked up with an image pickup device to generate an image pickup signal S1. A prescribed image processing is applied to the generated image pickup signal S1, and the lower end position of the cast slab 2 is detected. Thereby, the loop state of the cast slab 2 can be detected stably without producing meandering of the cast slab due to catching or point contact with the cast slab 2.

8. 发明专利

JP2000237848A METHOD FOR CONTROLLING ROLLING REDUCTION OF ROLLS IN TWIN ROLL TYPE CONTINUOUS CASTING 失效
公开(公告)号：JP2000237848A
公开(公告)日：2000-09-05
申请号：JP3984599
申请日：1999-02-18
申请人： NIPPON STEEL CORP
发明人： IZU TADAHIRO , TSUKAMOTO RYUTA , ISAKI HIROSHI
IPC分类号： B22D11/06 , B22D11/04 , B22D11/05 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To prevent the development of tear-off and breakout caused by a hot-band of a cast strip by sensing the development of the hot band from the variation of reaction of rolls or gap of the rolls, fastening the roll gap just after passing the roll reaction through the max. value, keeping the suitable roll reduction and executing the casting. SOLUTION: Signal of the roll reaction with a reaction detector 1 is compared with the reaction target value with a reaction control device 2 and a hydraulic servo valve 3 is controlled with the signal according to a difference and a rolling reduction position is controlled so that the roll reaction becomes the target reaction with a hydraulic cylinder 4. Further, a signal of the roll position with a positional detector 5 is compared with the drum gap target value through a rolling reduction control unit 6 and the drum position is controlled so as to become the target gap by controlling a motor M through a roll speed control unit 7 with the signal according to the difference to obtain the cast strip having a prescribed strip thickness.

9. 发明专利

JPH1062077A METHOD FOR PREVENTING LOCAL MELTING LOSS OF FURNACE WALL REFRACTORY MATERIAL OF ARC FURNACE 失效
公开(公告)号：JPH1062077A
公开(公告)日：1998-03-06
申请号：JP22158496
申请日：1996-08-22
申请人： NIPPON STEEL CORP
发明人： TSUKAMOTO RYUTA , HOSOI YOSHIRO , YANO HIROSHI , TAKANO HIRONORI
IPC分类号： H05B7/144 , F27B3/08 , F27D11/08 , F27D21/00 , H05B7/148
摘要： PROBLEM TO BE SOLVED: To equalize the quantity of fusing damage of a hot spot refractory material by simultaneously adjusting phase currents of three phase based on a correction factor obtained by calculation from the equivalent circuit of an arc furnace. SOLUTION: In a three-phase AC arc furnace 3, the remaining thickness of each hot spot refractory material is actually measured every time only one phase current is adjusted, and the fusing damage speed of the refractory material is obtained based on the number of times of melting. Arc resistance in the equivalent circuit of the AC arc furnace 3 is arbitrarily applied so that each phase current is inversely calculated according to a prescribed procedure and the fusing damage factor of the refractory material as a parameter most correlative to the refractory material fusing damage speed of each phase is obtained. After the special furnace of the AC arc furnace 3 is repaired upon high power operation, a phase current correction factor is obtained from the relation between the refractory material fusing damage factor and the refractory material fusing damage speed for each of the three phases, and the phase currents of three phase are simultaneously set based on this value. As a result, the quantity of three phase refractory material fusing damage is substantially equalized. Thus, since a phase current balance is adjusted suitably for an actual operation, a local refractory material fusing damage is efficiently suppressed, and the life of the furnace can be thus effectively extended.

10. 发明专利

JP2005111522A Method for controlling rolling-reduction of rolls in twin-roll type strip continuous casting apparatus 审中-公开
标题翻译：用于控制双辊型连续铸造装置中滚子的滚压减少的方法
公开(公告)号：JP2005111522A
公开(公告)日：2005-04-28
申请号：JP2003349394
申请日：2003-10-08
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SORAO KENJI , HOSHINO TAKEO , TSUKAMOTO RYUTA , SHODA SHUNJI , IZU TADAHIRO
IPC分类号： B22D11/06
摘要： PROBLEM TO BE SOLVED: To prevent the defective shape and the defective quality of a cast strip with a hot-line, in a twin-roll type strip continuous casting apparatus. SOLUTION: In the twin-roll type continuous casting facility for producing the thin-plate-like cast strip, the generation of the hot-line, is automatically sensed from the variation in temperature at the central part in the width direction of the cast strip just below the rolls. When the hot-line is generated, a roll reaction target value is automatically increased by a fixed value, and when the hot-line is completed, the reaction target value is automatically lowered to the original reaction target value and in this way, the defective shape and the defective quality of the cast strip with the hot-line can be prevented. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在双辊型连续铸造设备中，为了防止热轧线的铸造带材的缺陷形状和质量不良。解决方案：在用于生产薄板状铸造带的双辊式连续铸造设备中，热线的生成由在宽度方向中央部的温度变化自动检测在轧辊下方的铸钢带。当产生热线时，辊反应目标值自动增加固定值，并且当热线完成时，反应目标值自动降低到原始反应目标值，并且以这种方式，缺陷可以防止带有热线的铸造带材的形状和缺陷质量。版权所有（C）2005，JPO＆NCIPI

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