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51. 发明专利

JPS61405B2 失效
公开(公告)号：JPS61405B2
公开(公告)日：1986-01-08
申请号：JP11492681
申请日：1981-07-22
申请人： NIPPON STEEL CORP
发明人： KASE MASAJI , UMETSU YOSHINORI , KUME SHOICHI , TAKAMURA TETSUJI , TOKI MASAHIRO
IPC分类号： C21C1/04

52. 发明专利

JPS588987A DEVICE FOR TREATING SLAG FOR METALLURGY 失效
公开(公告)号：JPS588987A
公开(公告)日：1983-01-19
申请号：JP10520781
申请日：1981-07-06
申请人： NIPPON STEEL CORP
发明人： NARASAKI SEIJI , NAKAMOTO KATSUMI , TOKI MASAHIRO
IPC分类号： C21C5/28 , C21B3/06 , C21B3/08 , F27D15/00 , F27D17/00

53. 发明专利

JP2002178108A METHOD FOR CONTINUOUSLY CASTING STEEL 失效
公开(公告)号：JP2002178108A
公开(公告)日：2002-06-25
申请号：JP2000373946
申请日：2000-12-08
申请人： NIPPON STEEL CORP
发明人： KAJITANI TOSHIYUKI , YAMADA WATARU , TOKI MASAHIRO , HIGANO YASUHISA
IPC分类号： B22D11/00 , B22D11/04 , B22D11/10 , B22D11/115
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method controlling the fluidity in a mold in accurately by fining an equi-axed crystal grain diameter and reducing entrapment of powder. SOLUTION: In the continuous casting method performed by dipping a nozzle 2 and applying an electromagnetic stirring 4 in the mold 1 for billet having

54. 发明专利

JP2002153955A METHOD FOR CONTINUOUSLY CASTING BILLET 失效
公开(公告)号：JP2002153955A
公开(公告)日：2002-05-28
申请号：JP2000355264
申请日：2000-11-22
申请人： NIPPON STEEL CORP
发明人： TANAKA SHIGENORI , UCHIMURA MITSUO , TOKI MASAHIRO , TOMINO SHINICHIRO
IPC分类号： B22D11/128
摘要： PROBLEM TO BE SOLVED: To make a continuous casting facility as simple as possible while improving internal crack when segregation is improved by performing light rolling reduction. SOLUTION: (1) In a method for continuously casting a billet, two or more pairs of rolls for light rolling reduction are used and the roll interval is controlled to >=L1 in the (1) equation. L1=10×(VC×100/60)...(1) wherein, L1: the roll interval in the minimum light rolling reduction (mm), VC: casting speed of the billet (m/min). (2) The above (1) equation is satisfied and the roll interval in the light rolling reduction is controlled to >=L2 in the continuous casting method of the billet L2=20×(VC×100/60)...(2) Wherein, L2: the roll interval in the maximum light rolling reduction (mm).

55. 发明专利

JP2001290799A STABILITY EVALUATION SYSTEM, CONTROL SYSTEM, STABILITY EVALUATING METHOD, CONTROL METHOD, AND RECORDING MEDIUM 失效
公开(公告)号：JP2001290799A
公开(公告)日：2001-10-19
申请号：JP2000108262
申请日：2000-04-10
申请人： NIPPON STEEL CORP
发明人： HIRAYAMA TAKASHI , FUJISAKI KEISUKE , AKAGI TOSHIO , ISE JUNJI , TOKI MASAHIRO , KIMURA YOSHIAKI
IPC分类号： H05H1/32 , B23K10/00 , G06F17/18
摘要： PROBLEM TO BE SOLVED: To appropriately evaluate the stability of an output state from a device. SOLUTION: Digital result data obtained by digitalizing a signal for controlling the arc of a plasma torch 7, which is momently supplied from a power source part 6, is extracted by an arithmetic processing part 3. The value of a fractal dimension D is calculated from extracted digital result data. A judgment part 4 compares the calculated value of the fractal dimension D with a threshold which is previously set. It is judged whether the arc of the plasma torch 7 is stable or unstable. Thus, the stability of the arc of the plasma torch 7 is directly judged from result data and the stability of the arc of the plasma torch 7 can appropriately be evaluated.

56. 发明专利

JPH11170011A CONTINUOUS CASTING TUNDISH 失效
公开(公告)号：JPH11170011A
公开(公告)日：1999-06-29
申请号：JP34014297
申请日：1997-12-10
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： TOKI MASAHIRO , ITO SATOSHI , SENDA KATSUYA , OGURA KEIJI , KUDO KOICHI
IPC分类号： B22D11/00 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To execute the stable casting by providing a weir along the longitudinal direction of a tundish at the bottom part of the tundish between the molten metal dropping part from a molten metal vessel and a pouring hole line into molds and specifying the range of the weir height to effectively eliminate the large kinetic energy of molten metal stream. SOLUTION: The weir 10 along the longitudinal direction of the continuous casting tundish 1, is arranged. Therefore, the weir 10 can be set without interfering with each pouring hole 5, The height of the weir 10 is set as 150-250 mm. In the case of being

57. 发明专利

JPH11147161A CONTINUOUS CASTING METHOD AND MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH11147161A
公开(公告)日：1999-06-02
申请号：JP24927198
申请日：1998-09-03
申请人： NIPPON STEEL CORP
发明人： SAWADA IKUO , OKAZAWA KENSUKE , SHIGEMATSU KIYOSHI , TOKI MASAHIRO
IPC分类号： B22D11/04 , B22D11/07 , B22D11/10
摘要： PROBLEM TO BE SOLVED: To reduce the bulging, breakout and surface crack of a cast slab and to improve the productivity of continuous casting and the product quality by controlling the thickness of air gap developed between a mold and a cast slab (solidified shell) caused by the solidified shrinkage and the transformation shrinkage in the continuous casting of metal, improving the cooling speed between the mold and the case slab and increasing the solidified shell thickness and the powder supplying speed. SOLUTION: In the mold for continuously casting the metal, (1) on the whole periphery so as to surround the cast slab 3 on the lower bottom surface of the mold 1 or on at least the bottom surface of wide surface of the mold, slit 6 for downward injecting the high pressure fluid is arranged. Or, (2) a recessed part is arranged on the whole periphery or on at least the wide surface so as to surround the cast slab 3 so that the surface of the cast slab 3 and the mold become perfectly non-contact on the inner surface at the lower part of the mold 1, and the slit 6 for injecting the high pressure fluid is arranged on the upper surface or the side surface of the recessed part. Further, or (3) a box is attached to the lower part of the mold 1 so as to be connected with the mold, and the slit 6 for injecting the high pressure fluid, is arranged on the bottom surface of the box or the upper surface or the side surface of the recessed part.

58. 发明专利

JPH1163968A METHOD FOR MEASURING AIR GAP BY THERMAL FLUX DETECTION OF CASTING MOLD, AND THERMAL FLUX DETECTOR AND SENSOR IN THE SAME DEVICE 失效
公开(公告)号：JPH1163968A
公开(公告)日：1999-03-05
申请号：JP24186297
申请日：1997-08-22
申请人： KAWASO DENKI KOGYO , NIPPON STEEL CORP
发明人： ITO SATOSHI , TOKI MASAHIRO , NAKAJIMA JUNJI , OTANI YASUHIKO , IGAWA OSAMU , MORI KEIICHI
IPC分类号： G01K17/08 , B22D11/16 , G01B21/16
摘要： PROBLEM TO BE SOLVED: To obtain a method for measuring an air gap by a thermal flux detection of casting mold, and a thermal flux detector and a sensor in the same device. SOLUTION: A lubricous layer by a lubricant 57 is formed between a mold wall face W of casting mold and a melted steel, and an air gap 59 is naturally formed between the lubricous layer and the mold wall. From thermal flux q detected by a coaxial sensor 35 inserted into a thick direction of the mold wall and represented by expression q=(TH-TL)/R (however, R is thermal resistance of a matter between TH and TL); an internal temperature T1 of a mold wall part W detected at a tip of the coaxial sensor 35; and a solidus temperature TSL of melted steel, a temperature T2 on an interface of the mold wall and an air gap 59 and a temperature T3 on an interface of the lubricous layer and the air gap 59 are acquired. Thermal resistance R2 of the air gap 59 is acquired by expression q=(T3 -T2 )/R2 representing the thermal flux q in a thickness direction of the air gap 59, and a thickness d2 of the air gap is acquired by R2 =d2 /λ (λis thermal conductivity of the air gap).

59. 发明专利

JPH10166123A METHOD FOR HEAT-CONDUCTING AND PROMOTING CONTINUOUS CASTING MOLD AND DEVICE THEREFOR 失效
公开(公告)号：JPH10166123A
公开(公告)日：1998-06-23
申请号：JP32313996
申请日：1996-12-03
申请人： NIPPON STEEL CORP
发明人： TOKI MASAHIRO , ITO SATOSHI , OTANI YASUHIKO
IPC分类号： B22D11/128 , B22D11/04 , B22D11/10 , B22D11/108 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To promote the heat-conduction at the middle and the lower parts of a mold and to improve the casting speed and the productivity by controlling a powder flow-down space just below the mold flowing down the molten powder flowed down to the lower part of the mold so that heat-flow flux becomes the max. SOLUTION: A gate 10 which can change the flow-down space of the molten powder flowed down to the lower part of the mold, is arranged and heat flow flux meters 11 for measuring the heat conductive condition in the mold are arranged at the middle and the lower parts of the mold, and the opening degree of the gate is controlled so that the heat conductive quantities at the middle and the lower parts of the mold always become the max. Powder stuck layer 12 conventionally formed at the lower end of the mold is formed to above the gate by setting the gate 10 and this size is changed according to the opening degree of the gate 10. Therefore, the flow-down space 13 of the powder is controlled by changing the opening degree of the gate 10 and the size of an air gap 14 developed at the middle and the lower parts of the mold is changed by filling the powder molten layer 15. By this method, the heat conduction at the middle and the lower parts of the mold can be improved.

60. 发明专利

JPH05126474A METHOD AND DEVICE FOR MEASURING VOLUME OF SUCKED AIR BY SINTERING MACHINE 失效
公开(公告)号：JPH05126474A
公开(公告)日：1993-05-21
申请号：JP31740991
申请日：1991-11-06
申请人： NIPPON STEEL CORP
发明人： NAKAYAMA MASAAKI , KOBAYASHI MASANORI , TAKAHASHI TAKASHI , TOKI MASAHIRO , HARADA AKIRA , TAKAHASHI TOSHIHIRO
IPC分类号： C22B1/20 , F27B21/14 , G01F1/00
摘要： PURPOSE:To measure the distribution of the volume of sucked air in a sintering head with a low cost by a method wherein an air box, equipped with an air volume meter, is installed on a sintering head at the starting position of measurement of the volume of sucked air and the volume of sucked air is measured while moving the head to an ore discharging unit, then, the air box is lifted and recovered after finishing the measurement to return it to the starting position of measurement of the amount of sucked air. CONSTITUTION:An air box 16, equipped with an air volume meter 25, is set on a sintering head 2 by a hook 23 on a self-propelling truck 17 positioned at the starting position A of measurement of the amount of sucked air. Then, the measurement of the volume of sucked air of the sintering head is started. The measurement of air volume is effected while running the self-propelling truck 17 toward the measuring position B of sucked air. When the truck has arrived at the finishing position B of measurement of air volume and a limit switch is operated, the air box 16 is released from the hook 23 to recover it and the self-propelling truck 17 is run reversely to the air volume measuring position A to stop and wait by the operation of the limit switch. Thereafter, measuring cycle is repeated to continue the measurement of the amount of sucked air in the sintering head.

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