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1. 发明专利

JPH03118946A BRUSHING DEVICE FOR CONTINUOUS CASTING DRUM 失效
公开(公告)号：JPH03118946A
公开(公告)日：1991-05-21
申请号：JP25528389
申请日：1989-10-02
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： TANNO HITOSHI , YAMAGAMI YASUHIRO , HAYASHI KANJI , WAKIYAMA YOICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To uniformize thickness of stuck material on drum surface and to continuously cast a steel strip having high quality by inclining rotating axis of a brush for removing the stuck material on the drum surface to rotating axis of the drum at the time of continuously casting the steel slab having strip shape from molten steel with twin drum type using the cooling drums having hourglass shape in cold state. CONSTITUTION:Two cooling drums 1, 2 are rotated mutually to reverse direction, and molten steel is poured into gap between both drums and the continuously cast strip from between both drums is pulled out. In this case, surface of pouring basin part 3 at center of the drums 1, 2 is bulged to outside as shown with the chain line 7 caused by heating of the molten steel, and interval between both drums 1, 2 is made to small at the center part and thickness of the continuously cast strip is made to uneven in the width direction. As the stuck material on the drum is formed to the same shape, shape of the drum 1, 2 at cold-state is formed as the hourglass having the concave shape at the center part and at the same time, the rotating axis of columnar rotating brushing roll 5, 6 for removing the stuck material is inclined to the rotating axis of drum, and by making this angle adjustable, the stuck material face on the drum surface is flattened and the thickness of continuously cast strip is uniformized in the width direction.

2. 发明专利

JPH03118945A TWIN ROLL TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH03118945A
公开(公告)日：1991-05-21
申请号：JP25528289
申请日：1989-10-02
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： OMATSU YASUHIKO , TANNO HITOSHI , SHIMAO TERUO , ITO HIROO , SASAKI KUNIMASA , WAKIYAMA YOICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To improve wear resistance on end face of roll and also to improve sealing property in pouring basin part by arranging a ceramic material at parts of side weir in contact with the rolls and coating both end faces of the roll with tungsten carbide series wear resistant material. CONSTITUTION:Sectorial shaped side weirs 4, 5 are arranged at both sides of one pair of rolls 2, 3 so as to come into contact with the end faces 2a, 2b, 3a, 3b of each roll 2, 3 to demarcate the pouring basin part. The rolls 2, 3 are rotated to the arrow mark (a), (b) directions, respectively and the molten metal 6 is filled into the pouring basin part to send out a cast strip 8 from gap 7 between the rolls 2, 3. Then, at least at the position of the side weir 4, 5 in sliding contact with the end faces 2a, 2b, 3a, 3b of rolls, the ceramic material 9 (Si3N4, SiC, etc.) is set as V-shape and the circumference thereof is surrounded with refractory 10. Further, at the end faces 2a, 2b, 3a, 3b of the rolls, the base material 11 of roll is coated with the wear resistant material 1 of tungsten carbide series through Ni series alloy 12.

3. 发明专利

JPH02299749A METHOD FOR LUBRICATING END PART OF TWIN DRUM TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH02299749A
公开(公告)日：1990-12-12
申请号：JP12106189
申请日：1989-05-15
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： YAMAGAMI YASUHIRO , TAKEMOTO OSAMU , TANNO HITOSHI , SHIMAO TERUO , YAMANE ATSUMU , SASAKI KUNIMASA
IPC分类号： B22D11/06
摘要： PURPOSE:To improve service life of a drum and a side weir by pulverizing granular body supplied onto sliding faces between the cooling drums and the side weir with this sliding during operation in a twin drum type continuous casting machine and lubricating the sliding faces. CONSTITUTION:At the time of operating by forming pouring basin part 3 which is partitioned by pushing the side weirs 2a and 2b to both sides of one pair of the rotating cooling drums 1a and 1b in the twin drum type continuous casting machine, lubricant supplying tanks 5 are arranged to the side weirs 2a and 2b to supply the lubricant onto the sliding face 2-3 through a lubricant supplying passage 2-5 and groove 2-6. By this method, friction force caused by sliding between the drum and the side weir is reduced and the service life can be improved.

4. 发明专利

JPH03118944A BRUSHING DEVICE FOR STRIP CONTINUOUS CASTING MACHINE WITH SHIFTING MOLD 失效
公开(公告)号：JPH03118944A
公开(公告)日：1991-05-21
申请号：JP25376589
申请日：1989-09-30
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： OMATSU YASUHIKO , TANNO HITOSHI , SASAKI KUNIMASA , YAMAMOTO KEIICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To efficiently produce a cast strip without any defect of crack, etc., by bringing brushing rolls into contact with cooling drums for shifting molds while rotating under the specific condition and leveling stuck material layers on surfaces of the cooling drums to uniform thicknesses. CONSTITUTION:Pouring basin part 5 is formed with one pair of the cooling drums 1, 2 and one pair of side weirs 3, 4, and molten steel is poured to cast the cast steel strip 6. Then, the brushing roll 7, 8 rotated at 500-2000rpm rotating velocity with motor 25 is slidingly brought into contact with the surface of cooling drum 1, 2 with compressive spring 16, 17 at the back thereof and pushed with uniform force of 0.05-0.2kg/mm in the axis direction. Further, the brushing roll 7, 8 have such construction that the brush belt 19 having 150-250mm outer diameter and flocked hard steel wires 18 of 0.05-0.3mm wire diameter formed as wave form is wound spirally on a flange 20, and fixed with spot weldings 21 in places. By this method, the molten metal oxide, etc., stuck on the cooling drum 1, 2 is uniformly leveled and the cast strip 6 having uniform thickness of about 1-10mm is produced without any defect.

5. 发明专利

JPH0299243A METHOD AND APPARATUS FOR CONTINUOUSLY CASTING CAST STRIP 失效
公开(公告)号：JPH0299243A
公开(公告)日：1990-04-11
申请号：JP25068588
申请日：1988-10-03
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： MIZUCHI ISAO , KASAMA AKIO , TANNO HITOSHI , SASAKI KUNIMASA , YAMAMOTO KEIICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To always maintain peripheral surface of cooling drum to clean condi tion and to produce a cast strip having excellent quality by selectively brushing the peripheral surface part of the cooling drum sticking a large quantity of foreign materials. CONSTITUTION:Brushing rolls 11a, 11b are arranged on running carriages 13a, 13b through arms 12a, 12b. These running carriages 13a, 13b receive signal from optical detectors 14a, 14b for detecting sticking condition related to the axial direction of the foreign materials stuck to the peripheral surfaces of the cooling drums 1a, 1b to advance/retreat frames 15a, 15b to the axial direc tion of the cooling drums 1a, 1b. Then, the peripheral surface part of the cooling drum sticking much foreign materials is selectively sliding-scraped to execute removal of the foreign materials. In such a way, as the place having much foreign material stick quantity is concentratedly brushed, the removal of the foreign materials is efficiently executed. Then, as the other peripheral part is not brushed, the wear of the peripheral surfaces of the cooling drums 1a, 1b can be restrained.

6. 发明专利

JPH01133649A TWIN DRUM TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH01133649A
公开(公告)日：1989-05-25
申请号：JP29446487
申请日：1987-11-20
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： TAKEMOTO OSAMU , TANNO HITOSHI , ITANI HIKOTARO , YAMANE ATSUMU
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the development of defect in a metal strip by continuously supplying and pushing a sand belt on peripheral faces of cooling drums at reverse sides to pouring basin and if necessary, arranging heat insulating material spraying device. CONSTITUTION:Pushing rolls 12 are arranged on the peripheral faces of cooling drums 1a, 1b at reverse sides to the pouring basin 3 to push the sand belt 11 on the peripheral faces of the drums by the prescribed faces with cylinders 14. If necessary, nozzles 15 are arranged on the peripheral faces of the drums and the heat insulating material is uniformly sprayed on the peripheral faces to the axial direction of the drums 1a, 1b from plural nozzle holes. By continuously supplying the sand belt 11 with pulleys 13a, 13b, the peripheral face of the drum is uniformly cleaned and after that, as the heat insulating material is uniformly sprayed to width direction, heat conductive capacity of the cooling drums 1a, 1b is uniformized, and the solidified shell is uniformly developed. Therefore, the development of the defect, such as longitudinal crack, waving, in the metal strip 7 is prevented.

7. 发明专利

JPS63207453A CONTINUOUS CASTING APPARATUS FOR METAL SHEET 失效
公开(公告)号：JPS63207453A
公开(公告)日：1988-08-26
申请号：JP3879387
申请日：1987-02-20
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： KASAMA AKIO , TANNO HITOSHI , SASAKI KUNIMASA , ITANI HIKOTARO
IPC分类号： B22D11/06
摘要： PURPOSE:To improve yield of product caused by expanding a gap by removing casting flash, by arranging side weirs on pair of cooling drums to form a space for storing molten metal and arranging the casting flash removing device at circumferential faces or side faces of the cooling drums abutting on the side weir. CONSTITUTION:Rotating brushes 6a, 6b are abutted on the side faces of the cooling drum 1a, 1b, at which the casting flash is developed, as the casting flash removing device. The casting flash developed between the side weir 2a, 2b and the cooling drum 1a, 1b side face is started from the gap and reached to the position arranging the rotating brush 6a, 6b by rotation of the cooling drum 1a, 1b. And, by the rotating brush 6a, 6b sliding in contact with the cooling drum 1a, 1b, the casting flash is removed from the side face of the cooling drum 1a, 1b and the cooling drum 1a, 1b having sound surface is rotatinglymoved again toward the molten metal pool 4.

8. 发明专利

JPH02104449A DEVICE FOR CONTROLLING ROLL SHAPE FOR TWIN ROLL TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH02104449A
公开(公告)日：1990-04-17
申请号：JP25495188
申请日：1988-10-12
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： OGAWA SHIGERU , TANNO HITOSHI , SASAKI KUNIMASA , HIRATA KATSUMI
IPC分类号： B22D11/06
摘要： PURPOSE:To make uniform strip thickness in width direction of a cast strip continuously cast and to maintain the sheet shape to good by adjusting thermal expansion at both end parts of water cooled rolls and uniformly controlling the strip thickness over the whole width of interval between the water cooled rolls during casting. CONSTITUTION:Difference of the sheet thickness between center part and both parts of the sheet steel W, is detected with a sheet shape detector 4 to transmit a signal to a current controller 5. The controller 5 controls heater block 3 of the water cooled roll 1 in accordance with the signal from the detector 4 and both parts of the water cooled roll 1 are heated and expanded, to maintain the shape thereof and the interval over the whole width of both rolls 1 is made to equal. As the sheet shape of the cast strip is varied at every moments during casting, always the shape is detected with the detector 4 to transmit to the controller 5. The controller 5 adjusts calorific power of the block 3 in the roll 1 by this value, and the thermal expansion rate of both end parts of the roll 1 is adjusted to control the shape and the sheet shape of the cast strip is maintained to good.

9. 发明专利

JPH01166863A METHOD AND DEVICE FOR CONTROLLING ROLLING REDUCTION IN TWIN DRUM TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01166863A
公开(公告)日：1989-06-30
申请号：JP32371087
申请日：1987-12-23
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： TANNO HITOSHI , ONODERA YUJI , TERADO SADAMU , HATTORI HIDENORI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the development of wedge in a cast slab by detecting and adding pressing forces at both end parts of one side of drum and parallel-shifting both ends of the other side drum with an oil hydraulic cylinder so that sum-up of the pressing forces at both end sides of the one side of drum becomes the prescribed value based on the signal. CONSTITUTION:By giving a pressing control device 18 a positioning demand S, servo valves 15a, 15b are driven through a positioning control devices 14a, 14b to control position of the drum 1 with the oil hydraulic cylinders 12a, 12b. The positions of the drums are detected with positioning detectors 13a, 13b, and feed-backed to the positioning control devices 14a, 14b to parallel control the drums 1, 1 with the cylinders 12a, 12b. At the time of giving the pressing control device 18 the pressing aimed value P, suitable operation (PI operation) is executed to difference with the pressing feedback P* inputted from load detectors 16a, 16b of the other side drum through an adder 17 to output the positioning demand S. By this method, two pieces of the drums are held to parallel and the pressing force to the cast slab is controlled to the prescribed value and seal between the drum and side weir is made to good and the product having uniform quality is obtd.

10. 发明专利

JPS6483341A CONTINUOUS CASTING APPARATUS FOR CAST THIN SLAB 失效
公开(公告)号：JPS6483341A
公开(公告)日：1989-03-29
申请号：JP24048087
申请日：1987-09-24
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： KASAMA AKIO , TANNO HITOSHI , SASAKI KUNIMASA , HIRATA KATSUMI
IPC分类号： B22D11/06
摘要： PURPOSE:To stably produce a continuously cast thin slab having excellent surface characteristic by uniformly cleaning surface of drums for cooling with brush rolls reciprocatively shifting toward the axial direction at the time of driving the twin type continuous casting machine. CONSTITUTION:At the time of pouring molten metal of molten steel, etc., into pouring basin part 7 and producing the continuously cast thin slab 8 by reversely rotating mutually both drums 5 to the arrow mark directions in the twin drum type continuous casting apparatus having two cooling drums 5, the brush rolls 1 are pushed against both cooling drums 5 with springs 4. In the brush roll 1, wires 13 of steel wire, etc., are planted on a flange 12 inserting a shaft 11 alternately as rough and dense and one end of the flange 12 is supported with bearing part 15 through the spring 14 and the other end of the flange 12 is connected with the air cylinder 16 for reciprocatively shifting. By reciprocatively shifting the flange 12 on the surface of the cooling drum 5 toward the axial direction by driving the air cylinder 16 to uniformly clean the surface, the continuously cast thin slab 8 drawn after cooling by both rolls 5 is stably obtd. as the one always having uniform thickness without any defect such as cracks.

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