专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000033466A METHOD FOR PREDICTING BREAKOUT IN CONTINUOUS CASTING 失效
公开(公告)号：JP2000033466A
公开(公告)日：2000-02-02
申请号：JP20078898
申请日：1998-07-15
申请人： SUMITOMO METAL IND
发明人： OKA MASAHIKO , HANAZAKI KAZUHARU , MURAKAMI TOSHIHIKO
IPC分类号： G01L5/00 , B22D11/16 , G01K13/04
摘要： PROBLEM TO BE SOLVED: To improve the reliability of decision and to accurately predict breakout by detecting the state which exceeds the setting value of friction force between a mold and a cast slab and temp. variating quantity at each point of a mold, and the state which becomes higher temp. at the lower side than the temp. at the upper side in the vertical direction of the mold, and predicting the breakout based on the abnormal combination to each state. SOLUTION: In a breakout deciding device 7, the measured values of thermocouples 8 at total (2 nm) positions at the front and the back points disposed on the lattice points of (m) points in the long side direction and (n) points in the vertical direction in the copper plate of the mold 1 and a load cell 9 for measuring the friction force (f) between the mold 1 and the cast slab 3, are inputted at each T0 sec in the sampling frequency. A speed command is outputted to a speed control device 10 in the mold from the breakout deciding device 7 based on the measured results of the mold temps. and the friction forces (f) to adjust the drawing speed with pinch rolls speed, i.e., the casting speed.

2. 发明专利

JPH11170021A DETECTION OF UNSTEADY BULGING IN CONTINUOUS CASTING AND METHOD FOR CONTROLLING MOLTEN METAL SURFACE 失效
公开(公告)号：JPH11170021A
公开(公告)日：1999-06-29
申请号：JP33888697
申请日：1997-12-09
申请人： SUMITOMO METAL IND
发明人： OKA MASAHIKO , HANAZAKI KAZUHARU
IPC分类号： B22D11/16 , B22D11/18 , B22D11/22
摘要： PROBLEM TO BE SOLVED: To avoid the deterioration of quality of a cast slab caused by enclosing of powder and the trouble of breakout, etc., by judging as unsteady bulging when the periodicity of current value of a pinch roll motor coincides with the periodicity of composite value of a molten metal surface level value and a molten metal surface control signal value. SOLUTION: The molten steel 1 is supplied into a mold 2 through a nozzle 6. The molten steel supplying quantity is adjusted with the shifting amount of a hydraulic cylinder 7 for adjusting the opening degree of a stopper 5. The molten steel surface level is controlled with a first controller 14 according to the deviation between the measured value L of a molten steel surface level meter 16 and the setting value X. A secondary controller 15 detects the unsteady bulging with the measured value L of the molten steel surface level and a current signal of the pinch roll motor 10 to execute the restraining treatment of variation of the molten steel surface. Then, it is judged as the unsteady bulging when the periodicity of the current value of the pinch roll motor 16 coincides with the periodicity of either one or both composite values of the molten steel surface level value and the molten steel surface control signal value.

3. 发明专利

JPH09253818A METHOD FOR CONTROLLING MOLTEN METAL SURFACE LEVEL IN CONTINUOUS CASTER 失效
公开(公告)号：JPH09253818A
公开(公告)日：1997-09-30
申请号：JP7033096
申请日：1996-03-26
申请人： SUMITOMO METAL IND , SUMITOMO HEAVY INDUSTRIES
发明人： HANAZAKI KAZUHARU , OKA MASAHIKO , KAGAWA TOMOAKI
IPC分类号： B22D11/16 , B22D11/128 , B22D11/18 , G05D9/12
摘要： PROBLEM TO BE SOLVED: To effectively restrain the variation of molten metal surface level developed in the inner part of a mold according to the movement of rolling reduction or release from the rolling reduction in an unsolidified part rolling reduction device, keep the control accuracy and the responsiveness over the whole operation containing the above movement to good condition and improve the yield of a product. SOLUTION: A level control part for controlling the molten metal surface level in the inner part of the mold M is provided with a PID arithmetic part 10 for calculating the opening objective value U0 of a sliding nozzle 7 by the PID operation based on the deviation between the objective level Lr and the measured value Lt of the molten metal surface level in the inner part of the mold M and a disturbance estimating part 11 for calculating a correcting value ΔU by giving the moving actual value (x) of the sliding nozzle 7 and the measured value Lt of the molten metal surface level. The disturbance estimating part 11 is estimated as a control model constituted with the variation of the molten metal surface level according to the movement of the unsolidified part rolling reduction device containing a delay time until the movement of the sliding gate 7 develops according to the variation and the characteristic variation of a level sensor 3a accompanied with the change of shut-off frequency of oscillation filter 3b.

4. 发明专利

JPH09122864A METHOD FOR STARTING AUTOMATIC CASTING IN CONTINUOUS CASTING 失效
公开(公告)号：JPH09122864A
公开(公告)日：1997-05-13
申请号：JP30508495
申请日：1995-10-30
申请人： SUMITOMO METAL IND
发明人： OKA MASAHIKO , HANAZAKI KAZUHARU
IPC分类号： B22D11/16 , B22D11/08 , B22D11/18 , G05D9/12
摘要： PROBLEM TO BE SOLVED: To restrain the variation of molten metal surface in a mold in starting casting and the rising speed of molten metal surface in the case of being quick speed at the initial stage. SOLUTION: At the time of shifting from the start of the casting to the stationary condition of the molten steel surface level in a mold, the molten steel surface is controlled so as to obtain the same rising speed of the molten steel surface level in the mold as the casting speed at the time of starting pinch rolls beforehand before starting the pinch rolls. After compensating the starting delay of the pinch rolls, the influence on the molten steel surface level caused by the start of the pinch rolls, is restrained, and the stable shift to the molten steel surface level in the stationary condition is obtd. Since the deviation from a balance point of the sliding nozzle opening degree caused by developing the starting delay of the pinch rolls is prevented, the variation of the molten steel surface in the mold at the time of starting the casting can be restrained. Even in the case of being the quick speed at the initial stage, since the rising speed of the molten steel surface in the mold can be restrained, the molten steel surface control in the mold can easily and accurately be executed.

5. 发明专利

JPH06234051A INSTRUMENT FOR MEASURING VARIATION OF MOLTEN METAL SURFACE LEVEL IN CONTINUOUS CASTING MOLD 失效
公开(公告)号：JPH06234051A
公开(公告)日：1994-08-23
申请号：JP2303493
申请日：1993-02-10
申请人： SUMITOMO METAL IND
发明人： HANAZAKI KAZUHARU
IPC分类号： B22D11/16 , G01F23/28
摘要： PURPOSE:To improve yield by measuring molten metal surface level in a mold for continuous casting and also, detecting two dimensional wave motion on the molten metal surface level. CONSTITUTION:By using an optical mechanisms 5, 6 constituted of an optical sources 5a, 6a, polygonal mirrors 5b, 6b and motors 5c, 6c, grid-like light is projected on the surface of powder 10 in the mold 1. Then, the light reflected on the surface of powder 10 is received with a camera 7, and based on this image data, amplitude and frequency in the variation of the surface level of powder 10 are calculated. The thickness of powder 10 is subtracted from the obtd. wave motion on the surface of powder 10, and two dimensional surface wave motion of the molten steel 2 is detected.

6. 发明专利

JPH0539516A FURNACE FOR PRODUCTING MOLTEN IRON AND METHOD THEREFOR 失效
公开(公告)号：JPH0539516A
公开(公告)日：1993-02-19
申请号：JP19533491
申请日：1991-08-05
申请人： SUMITOMO METAL IND
发明人： YAMAMOTO TAKAIKU , ISHIDA HIROAKI , UJISAWA MASARU , HANAZAKI KAZUHARU
IPC分类号： C21B11/02 , F27D21/00
摘要： PURPOSE:To execute operational control by directly measuring molten iron surface, temp., components, etc., during operation of a cylindrical furnace for producing pig iron using scrap and iron ore as iron source. CONSTITUTION:In the cylindrical furnace having an opening part for exhausting gas and charging raw material at upper part, a primary tuyere at lower part of furnace wall, a secondary tuyere at upper furnace wall and an iron tapping hole and a bottom blowing tuyere at furnace bottom or lower furnace wall, and a measuring hole 13 is arranged at furnace wall below the primary tuyere. Various kinds of measuring instruments are inserted from this measuring hole, and based on this measuring data, the operational control is executed. By this method, the iron tapping corresponding to the aimed production can be executed, and the temp. and components of molten iron can be precisely adjusted.

7. 发明专利

JPH04262842A METHOD FOR MEASURING MOLTEN METAL LEVEL IN MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH04262842A
公开(公告)日：1992-09-18
申请号：JP15248991
申请日：1991-05-27
申请人： SUMITOMO METAL IND
发明人： FUJIWARA KOJI , SAKAMOTO TAKAHIDE , HANAZAKI KAZUHARU
IPC分类号： B22D11/16 , G01F23/26
摘要： PURPOSE:To accurately detect molten metal level in a mold for continuous casting regardless of the mold size and whether the width changes or not. CONSTITUTION:A transmitting coil 10 and a receiving coil 11 are burried as inserting the suitable level L of molten metal 2 in the mold 1, and the transmitting coil 10 is excited with low frequency exciting current outputted by oscillating circuit 12. Induction current induced to the receiving coil 11 with energy in magnetic field generated at this time, is grasped and phase difference between this and the above exciting current, is detected with a phase difference detector 14. The energy in the magnetic field reaching to the receiving coil 11 is influenced with length of propagation in the molten metal 2, i.e., height of the molten metal level, and phase lag and lowering of intensity are developed to induction current induced in the receiving coil 11. By using the phase difference outputted from the phase difference detector 14, the preset level of molten metal 2 is calculated with an arithmetic part 15.

8. 发明专利

JPH04251307A METHOD FOR CONTROLLING MOLTEN METAL LEVEL OF CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH04251307A
公开(公告)日：1992-09-07
申请号：JP1271791
申请日：1991-01-08
申请人： SUMITOMO METAL IND
发明人： HANAZAKI KAZUHARU
IPC分类号： B22D11/18 , G05B13/02 , G05D9/12
摘要： PURPOSE:To stably control the molten metal level of a continuous casting machine against various kinds of disturbances with a small-capacity computer by independently setting the computing period and gain of the proportional element, integral element, and differentiating element of an aero arithmetic circuit. CONSTITUTION:Molten metal level difference data found by subtracting the detected result of a molten metal level from the aimed value of the molten metal level are respectively supplied to a proportion arithmetic section 82, integration arithmetic section 83, and differentiation arithmetic section 84. The section 82 performs proportion operation against the difference in molten metal level by using a proportion control gain given from a PI learning section 85 and the section 83 performs integration operation against the difference by using a integration control gain and integration control period given from the section 85. The section 84 performs differentiation operation against the difference by using a differentiation control gain and differentiation control period given from a D-learning section 86. The operated results of these sections are given to an adder and the aperture of a sliding nozzle 2 which supplies a molten metal into a mold 4 is adjusted by means of a control output signal.

9. 发明专利

JPH04251306A METHOD FOR CONTROLLING POSITION OF HYDRAULIC CYLINDER 失效
公开(公告)号：JPH04251306A
公开(公告)日：1992-09-07
申请号：JP1271991
申请日：1991-01-08
申请人： SUMITOMO METAL IND
发明人： HANAZAKI KAZUHARU , MURAKAMI TOSHIHIKO
IPC分类号： F15B9/08 , G05B13/02 , G05D3/12
摘要： PURPOSE:To highly precisely control the position of a hydraulic cylinder with a simple device. CONSTITUTION:This method for controlling the position of a hydraulic cylinder 1 which controls the stroke of the cylinder 1 to an aimed value in such a way that a stroke detecting section 7 detects the actual stroke of the cylinder 1 and a control section 6 intermittently supplies hydraulic oil to the cylinder 1 so as to eliminate the difference between the actual stroke of the cylinder 1 detected by the section 7 and the aimed value by giving drive signals to the driving sections of the 1st and 2nd solenoid valves 51 and 52 for individually and periodically turning on and off the valves 51 and 52 changes the duty ratio between the drive signals of the valves 51 and 52 in accordance with the difference. In addition, the control section 6 learns the relation between the turning on/off periods of the drive signals of the valves 51 and 52 and the stroke changing speed on the basis of the information regarding the turning on/off periods of the valves 51 and 52 and regarding the stroke detected by the section 7 and controls the turning on/off periods on the basis of the learnt relation.

10. 发明专利

JPH0480313A PRODUCTION OF MOLTEN IRON 失效
公开(公告)号：JPH0480313A
公开(公告)日：1992-03-13
申请号：JP19450190
申请日：1990-07-23
申请人： SUMITOMO METAL IND
发明人： UJISAWA MASARU , ISHIDA HIROAKI , HANAZAKI KAZUHARU
IPC分类号： C21B11/02 , F27B3/28
摘要： PURPOSE:To control blasting stop time and charging coke quantity at the next time by calculating material balance and heat balance in a furnace, calculating producing quantity of molten iron in the furnace and consumption of bed coke in the furnace in time series and predicting completing time of melting and proper quantity of the bed coke in the furnace. CONSTITUTION:Informations related to charging material, blasting, exhaust gas and radiated heat from furnace body are collected by using various kinds of attaching equipments. The above operational measured data are sampled at each prescribed timing to make data file in the time series and sequential material balance is calculated and various kinds of reactions and reaction quantity in the cylindrical type furnace are sequentially and accurately quantified from the coke quantity, fuel quantity consumed with consumption of assist gas and flow rate of each component in the exhaust gas. By using a heat balance model, produced heat quantity of molten iron is sequentially calculated, and the produced molten iron quantity in the furnace and coke quantity consumed with carburizing into the molten iron are calculated in time series. By this method, even in the case of varying the operational condition, production of the molten iron in the furnace can be accurately predicted.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式