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1. 发明专利

CA1228788A METHOD OF MANUFACTURING GRAIN-ORIENTED SILICON STEEL SHEETS 未知
公开(公告)号：CA1228788A
公开(公告)日：1987-11-03
申请号：CA471716
申请日：1985-01-09
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU YOH , NISHIDE TERUYUKI
IPC分类号： C22C38/00 , C21D1/42 , C21D8/12 , C21D9/00
摘要： A method of manufacturing a grain-oriented silicon steel sheet having excellent magnetic properties is disclosed. In this method, a silicon steel slab containing 2.0-4.5 wt % of Si, 0.020.10 wt % of Mn and 0.005-0.06 wt % in total of at least one of S, Se and Al is subjected to such a heat treatment prior to a hot rolling that the slab is heated to a slab center temperature of 900-1,230.degree.C in a slab heating furnace of a gas firing type and placed in a slab induction heating furnace before the slab center temperature is less than 900.degree.C and then held at a slab center temperature of 1,250-1,380.degree.C for not less than 10 minutes.

2. 发明专利

DE3032466A1 未知
公开(公告)号：DE3032466A1
公开(公告)日：1981-03-19
申请号：DE3032466
申请日：1980-08-28
申请人： KAWASAKI STEEL CO
发明人： NAOI TAKAYUKI , HAMADA KEIICHI , NISHIDE TERUYUKI , SHITOMI MAKOTO , NOGUCHI HIDETAMI
IPC分类号： B21B31/07 , F16C13/02 , F16C35/02 , F16D1/072
摘要： Metal sheets having a low deviation of sheet thickness are produced by rolling a sheet through a finishing rolling mill in which at least a final stand is provided with oil film bearings of a rolling roll, each of which consists of a bushing in a roll chock bearing box and a sleeve tightly fitted to a tapered neck of the roll to form a journal relative to the bushing, and is provided with a key connection fixing the sleeve to the rolling roll in a zone of less than 0.2 times the length of a bearing pressure receiving zone from the end of the tapered fitting zone of the sleeve and the roll neck.

3. 发明专利

JPS62103322A HEATING METHOD FOR GRAIN ORIENTED SILICON STEEL SLAB 失效
公开(公告)号：JPS62103322A
公开(公告)日：1987-05-13
申请号：JP24042085
申请日：1985-10-29
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU HIROSHI , NISHIDE TERUYUKI
IPC分类号： C21D8/12 , C21D9/00
摘要： PURPOSE:To economically obtain a grain oriented silicon steel sheet having excellent magnetic characteristics in the titled heating method by an induction heating furnace by controlling the frequency in induction heating to a specific range thereby heating up the surface layer and central part to a uniform temp. CONSTITUTION:The titled slab contg., by weight, 2.0-4.5% Si, and 0.01-0.15% Mn and contg. 0.005-0.10% >=1 kinds among inhibitors of S, Se and Al is subjected to induction heating to a holding temp. prior to hot rolling. The fre quency in the induction heating is controlled to 50-200Hz to increase the temp. in the central part of the above-mentioned slab to 1,300-1,400 deg.C and to hold the same at said temp. The electric power to be thrown is decreased to

4. 发明专利

JPS6210214A HEATING METHOD FOR GRAIN ORIENTED SILICON STEEL SLAB 失效
公开(公告)号：JPS6210214A
公开(公告)日：1987-01-19
申请号：JP14817985
申请日：1985-07-08
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU HIROSHI , NISHIDE TERUYUKI
IPC分类号： H01F1/16 , C21D8/12 , C21D9/00 , C22C38/00 , C22C38/04
摘要： PURPOSE:To improve the electromagnetic characteristic of a silicon steel sheet in the stage of producing a grain oriented silicon steel sheet by hot rolling and cold rolling of a silicon steel slab by holding the central temp. of the slab in a specific temp. range in an induction heating furnace prior to hot rolling and maintaining the specific relation between said temp. and the surface temp. of the slab. CONSTITUTION:The silicon steel slab contg., by weight %, 0.025-0.080% C, 2.0-4.5% Si, 0.02-0.10% Mn and 0.005-0.10% in total of at least one kind selected from S, Se, Al and B as an inhibitor component is heated up in the induction heating furnace in which a non-oxidizing atmosphere is maintained prior to hot rolling to maintain the relation 50 deg.C>=Ts-Tc>=-100 deg.C between the central temp. Tc of the slab and the surface temp. Ts in a 1,300-1,380 deg.C by the heat conduction from the surface layer toward the central part of the slab. The slab is held in this state for >=10min. The slab is subjected to ordinary hot rolling and cold rolling in succession of above to 0.15-0.5mm final sheet thickness. The grain oriented silicon steel sheet having the excellent magnetic characteristic in the rolling direction is thus produced.

5. 发明专利

JPS5630008A ROLLING METHOD FOR HOT STRIP 失效
公开(公告)号：JPS5630008A
公开(公告)日：1981-03-26
申请号：JP10427079
申请日：1979-08-16
申请人： KAWASAKI STEEL CO
发明人： KONDOU TOORU , JIRU MAKOTO , NAOI TAKAYUKI , UEKI SHIGERU , HAMADA KEIICHI , NISHIDE TERUYUKI
IPC分类号： B21B1/26
摘要： PURPOSE:To restrict the increase of the amount of the crop even if the breadthways rolling reduction is greatly increased, and to contrive the improvement of the yield, by forming the forefront and the tail ends of the slab into the tapered shape in respect of the breadthways rolling reduction, at the titled rolling method by the vertical and the horizontal rolls. CONSTITUTION:At the titled rolling method in which the slab is subjected to the breadthways edging pass by the vertical roll and to the flat rolling pass in the direction of the thickness by the horizontal roll, the plane shapes of the slab's forefront and tail ends are both formed into the tapered shape in respect of the breadthways rolling reduction. That is, the taper forming depths in the direction of the breadth at the forefront and tail ends, respectively m1T and m1B, are made smaller than the taper forming lengths in the longitudinal direction at the forefront and tail ends, respectively l1T and l1B; then the taper forming lengths l1T and l1B respectively at the forefront and tail ends are restricted together so as to satisfy the formula I in which DELTAW is for the breadthways rolling reduction, and basides, the taper forming depths in the direction of the breadth respectively at the forefront and tail ends, m1T and m1B, are restricted to satisfy the formula II. Meanwhile, above stated taper forming depths in the direction of the breadth may be made larger than the taper forming length in the longitudinal direction in forming the taper shape in respect of the breadthways rolling reduction.

6. 发明专利

JPS5544590A PRODUCTION OF HIGH TENSILE THIN STEEL PLATE OF SUPERIOR COLD WORKABILITY 失效
公开(公告)号：JPS5544590A
公开(公告)日：1980-03-28
申请号：JP11902178
申请日：1978-09-26
申请人： KAWASAKI STEEL CO
发明人： MORITA MASAHIKO , ITOU ISAO , TOUNO TAKEO , NISHIDE TERUYUKI , SAITOU YOSHIHIRO
IPC分类号： B21B3/00 , B21B3/02 , C21D8/00 , C21D8/02 , C21D9/46 , C21D9/52 , C22C38/00 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
摘要： PURPOSE:To obtain the captioned steel plate inexpensively with good efficiency by rolling the steel of the specified composition under specified draft while controlling and cooling the same at above the specified mean cooling rate from above the specified temperature then quenching the same thereby forming martensite phase thence coiling the steel plate. CONSTITUTION:The steel of C; 0.05-0.25%, Mn; 0.1-2%, Si; 1% or under and the rest Fe in weight % is rolled so that the total draft becomes 20-90% while it is being controlled and cooled so that the mean cooling rate or higher of the separately mentioned formula II is reached from the temperature of the separately mentioned formula I or higher. Next, this thin steel plate is quenched immediately upon ending of the rolling to let martensite phase be formed, after which it is taken up to a coil. In the formulas, Tsc( deg.C); the critical value of the control cooling start temperature of the foregoing steel plate. alphac; the critical value of the mean cooling rate. R; the total draft at the control cooling.

7. 发明专利

JPS5542740A SCALE GRINDING CONTROL METHOD OF HOT ROLLING STEEL BAND 失效
公开(公告)号：JPS5542740A
公开(公告)日：1980-03-26
申请号：JP11484478
申请日：1978-09-19
申请人： KAWASAKI STEEL CO
发明人： ITAYA SUSUMU , NISHIDE TERUYUKI , KAIHARA RIICHI
IPC分类号： B24B27/04 , B24B7/12 , B24B27/00
摘要： PURPOSE:To prevent the generation of insufficient acid cleaning such as overpick or underpick by controlling the grinding current to be supplied to the grinding device in accordance with the correlation function of the necessary grinding rate and the grinding current. CONSTITUTION:When the kind of the steel grade and the winding temperature are given to the function generator 11 by the on-line computer 10, the grinding rate is indicated by the recurrence formula of the winding temperature and the grinding rate of the specified steel memorized at the function generator 11, and the output signal is given to the operator 12. The grinding rate converted into the value per bath at the operator 12 is applied to the function generator 13 to be converted into the grinding current, and the output signal is sent to the current control device 14. The current control device 14 on-off controls the backup roll pressing down motor 9 on the basis of the input signal to conicide the grinding current consumed at the grinding motor 8 with the target value determined by the output signal from the function generator 13.

8. 发明专利

JPS53118260A PLATEETHICKNESS CONTROLLING METHOD FOR ROLLING MILL 失效
公开(公告)号：JPS53118260A
公开(公告)日：1978-10-16
申请号：JP3221077
申请日：1977-03-25
申请人： KAWASAKI STEEL CO , HITACHI LTD
发明人： NISHIDE TERUYUKI , YOSHIDA HIROSHI , MOROOKA YASUO , MITSUNAKA TOSHIO
IPC分类号： B21B37/18
摘要： PURPOSE:To imrpove accuracy in plate thickness to a remarkable extent and reduce off-gauge rate, by deriving a condition for minimizing the integration value of square of deviation in plate thickness at the outlet side of a rolling mill, and controlling the rolling force by the use of deviation in plate thickness at the outlet side and its differentiation signal onthe basis of said condition.

9. 发明专利

JPH01285783A WALL STRUCTURE OF HEAT TREATMENT FURNACE 失效
公开(公告)号：JPH01285783A
公开(公告)日：1989-11-16
申请号：JP11456088
申请日：1988-05-13
申请人： KAWASAKI STEEL CO
发明人： IWATANI AKIYUKI , NAOI TAKAYUKI , NISHIDE TERUYUKI , KIMURA MITSUZO
IPC分类号： F27D1/00 , C21D1/00 , C21D1/74 , C21D9/00 , C21D9/56
摘要： PURPOSE:To prevent the condensation in and heat loss from a heat treatment furnace which uses an ambient gas containing hydrogen having a high dew point by disposing a heat insulating material outside the iron shield of the furnace body and a heat insulating material inside the iron shield which does not experience an increase of thermal transfer rate by the action of the ambient gas. CONSTITUTION:The heat insulating material 6 disposed outside the iron shield 1 is there to maintain the temperature of the iron shield 1 above the dew point. The heat insulating material 2 inside the iron shield 1 is of a type of heat insulating material which controls the heat transmission by convection and does not experience an increase of thermal transfer rate by the action of the ambient gas containing hydrogen, and is reinforced by an inner reinforcement board 3 and a lining board 4. Such a heat insulating material has an average thermal transfer rate of less than 0.1kcal/mh deg.C even at a furnace temperature of, for instance, 800 deg.C. The average thermal transfer rate can be controlled also by employing a combination with other reinforcement heat insulating materials, which helps to reduce the overall thickness of the furnace wall. By this constitution, both the condensation and heat loss can be prevented at the same time, and the construction cost can also be reduced.

10. 发明专利

JPH01113120A UNWINDING METHOD FOR ANNEALED STEEL SHEET COIL 失效
公开(公告)号：JPH01113120A
公开(公告)日：1989-05-01
申请号：JP26982687
申请日：1987-10-26
申请人： KAWASAKI STEEL CO
发明人： NARUSE YUTAKA , NAOI TAKAYUKI , IWATANI AKIYUKI , NISHIDE TERUYUKI , YOSHIDA SHIGERU
IPC分类号： B21C47/26 , B21C47/18
摘要： PURPOSE:To remove the annealing release medium of both sides of a steel sheet at the same time and to prevent machine trouble from occurring by applying the annealing release medium to feed the steel sheet out of the lower side of an annealed steel sheet coil, spraying water on a feed opening bringing a rotating roll type brush in contact with the steel sheet and unwinding the steel sheet. CONSTITUTION:Since in unwinding a steel sheet coil 2, the steel sheet 20 is fed out of the lower side of the steel sheet coil 2 and water is sprayed from a heater 3 onto the feed opening of the steel sheet 2a, water is collected on the feed opening of the steel sheet 2a. Accordingly, by decreasing the amount of sprayed water, the annealing release medium can be surely prevented from scattering. Further, since the roll type brush 7 is rotated in contact with the feed opening of the steel sheet 2a to unwind the steel sheet 2a, the annealing release medium on both sides of the steel sheet can be removed at the same time as far as machines such as a guide, a shear, a welder, etc., are not affected and machinery troubles can be prevented from occurring.

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