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1. 发明专利

JPH06106310A NOZZLE FOR CASTING 失效
公开(公告)号：JPH06106310A
公开(公告)日：1994-04-19
申请号：JP26160292
申请日：1992-09-30
申请人： NIPPON STEEL CORP , KUROSAKI REFRACTORIES CO
发明人： HORI RYUICHI , MIHARA HIRONOBU , MIZUTA HIROAKI , MIWA MASUYUKI
IPC分类号： B22D11/10 , B22D11/16 , B22D41/50 , B22D41/58
摘要： PURPOSE:To reduce the developing rate of pin holes in a cast slab by providing at least one or mare of pressure measuring holes penetrating plural fine holes from the inner wall to the outer wall of a nozzle for casting in the measuring holes. CONSTITUTION:In packing material providing a base material 11 in an immersion nozzle and SUS-made socket metal tool 12 for connecting guiding pressure piping, the pressure measuring hole is arranged. As this material, coating material or heat resistant-mortar is used. A metal hoop 14 fixes the socket metal tool 12. Plural pieces of organic fibers 15 are arranged from the inner wall to the outer wall of the nozzle and eliminated at the time of preheating the immersion nozzle to become the fine pressure measuring holes. The material of a hot sealing material 16 is constituted of Al2O3, SiO2 and water glass. Therefore, by constituting the measuring hole with plural fine holes, the inner pressure in the nozzle can be measured in good precision and the always stable condition, and gas quantity mixed in the mold can be made to be the suitable quantity.

2. 发明专利

JPS5772759A Powder charger for continuous casting 失效
标题翻译：用于连续铸造的粉末充电器
公开(公告)号：JPS5772759A
公开(公告)日：1982-05-07
申请号：JP14812380
申请日：1980-10-24
申请人： Kuroda Precision Ind Ltd , Nippon Steel Corp , Nippon Steel Metal Prod Co Ltd
发明人： MORIMOTO YOSHIROU , EDA YASUYUKI , MIHARA HIRONOBU , KUWANO NOBUTAKA , SUZUKI SHIGERU
IPC分类号： B22D11/10 , B22D11/108 , B22D11/111
CPC分类号： B22D11/108
摘要： PURPOSE:To scatter the powder in a powder storage tank uniformly to the surface of molten steel and charging the same automatically to desired places according to needs by supplying said powder into a charging chute having a movable leading end with a supplying machine and extruding the same with a pusher into a mold. CONSTITUTION:A traveling carriage 2 is driven and is fixed in a prescribed position. At this time, powder for one time is beforehand transferred into a vessel 12 from a storage tank 10 by driving a powder supplying machine 11, and when a chute 4 is moved and set to and at a desired charging place by the operation of a moving motor 5, the slide gate of the vessel 12 is opened to drop the powder onto the chute 4. Thence, a pusher 8 is operated to advance an extrusion plate 9, thereby scattering the powder onto the melt surface. For areas where the consumption of the powder is large, charging times are beforehand set in a program, and automatic powder charging is executed.
摘要翻译：目的：将粉末储存罐均匀地散布到钢水表面，并根据需要将粉末自动装入所需位置，将粉末供给具有可移动前端的装料槽，并将其挤出用推进器进入模具。构成：行驶台车2被驱动并固定在规定位置。此时，通过驱动粉末供给机11，一次通过驱动粉末供给机11将一次的粉末从储罐10转移到容器12中，并且当滑槽4通过移动的操作移动并设置在期望的充电地点马达5，打开容器12的滑动门以将粉末落到滑槽4上。然后，推动器8被操作以推进挤压板9，从而将粉末散布到熔体表面上。对于粉末消耗量大的区域，预先在程序中设定充电时间，并且执行自动粉末充电。

3. 发明专利

JPH05212517A METHOD FOR EXECUTING LIGHT ROLLING REDUCTION IN CONTINUOUS CASTING 失效
公开(公告)号：JPH05212517A
公开(公告)日：1993-08-24
申请号：JP5416092
申请日：1992-02-06
申请人： NIPPON STEEL CORP
发明人： GOTODA HIDEAKI , MIHARA HIRONOBU , UCHIMURA MITSUO
IPC分类号： B22D11/128 , B22D11/20
摘要： PURPOSE:To provide a light rolling reduction method in continuous casting for reducing center segregation developed at the center part of thickness in a continuously cast slab. CONSTITUTION:This method is the light rolling reduction method, when the solidified progressing condition changes in a continuous caster by varying the casting speed. In the case the casting speed decreases, the light rolling reduction range is shifted to the upstream side and in the case the casting speed increases, the light rolling reduction range is shifted to the downstream side, and interval of the rolls is controlled so as to keep the rolling reduction speed in the light rolling reduction range at the same speed as before the casting speed decreases or increases. The passing time from meniscus at the rolling reduction starting position is made to be the time at which the solid phase ratio becomes 0.1-0.3 and the passing time from meniscus at the rolling reduction end position is made to be the time at which the solid phase ratio becomes 0.5-0.7 and the rolling reduction quantity DELTARj at each roll position in the rolling reduction range is controlled so that the average rolling reduction speed in the rolling reduction range be comes 0.5-1.2mm/min.

4. 发明专利

JPH02155552A METHOD FOR CONTROLLING CUTTING LENGTH IN CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPH02155552A
公开(公告)日：1990-06-14
申请号：JP30867488
申请日：1988-12-06
申请人： NIPPON STEEL CORP
发明人： MIMURA YOSHITO , MIHARA HIRONOBU , TAKAHASHI TAKAHARU
IPC分类号： B22D11/16
摘要： PURPOSE:To enable the optimum combination of cast slabs by executing wt. correction with the actual measured size to decide cutting position, executing correction of assumption and combination of the actual measured wt. of the strand with the predicted size and deciding the cutting cast slab at the next time. CONSTITUTION:A wt. correction arithmetic part 22 calculates casting thickness by using surface temp. from a thermometer 31, cast slab width from a width meter 24 and casting velocity from pinch roll group 14 and inputs to execute the wt. correction calculation. The arithmetic part 22 inputs the cast slab length to the the next cutting object from a processing part 23, but in this method, the solidified calculation model is built in, and by using the above casting thickness, actual pressure and surface temp., the cross section of the cast slab, further, the cast slab length are calculated to obtain the corrected position to be cut. This result is transmitted to a cutting machine control device 16 through the cutting length deciding position 21 and cutting machine 15 is worked at this position. The processing part 23 inputs the cast slab group taken out from the strand, and the assumption of the actual measured wt. of the strand with the actual measured size, the correction of combination of the cast slab taken from each strand and decision of the cutting cast slab at the next time are executed.

5. 发明专利

JPS5272317A METHOD OF POWDER THROWING ONTO MOLTEN SEEL SURFACE 失效
公开(公告)号：JPS5272317A
公开(公告)日：1977-06-16
申请号：JP14843075
申请日：1975-12-15
申请人： NIPPON STEEL CORP
发明人： MIHARA HIRONOBU
IPC分类号： B22D11/10 , B22D11/108 , C21C7/00
摘要： PURPOSE:Thermocouple is parted from molten steel surface and arrabged so as to bask in radiation of molten steel and the potential difference is changed to out put. thereby, the powder is thrown onto automatically, easily with simple device by the detection of the exposure degree of molten steel surface.

6. 发明专利

JPH0550201A LIGHT ROLLING REDUCTION METHOD IN CONTINUOUS CASTING 失效
公开(公告)号：JPH0550201A
公开(公告)日：1993-03-02
申请号：JP23105591
申请日：1991-08-20
申请人： NIPPON STEEL CORP
发明人： GOTODA HIDEAKI , UCHIMURA MITSUO , MIHARA HIRONOBU
IPC分类号： B22D11/128 , B22D11/20
摘要： PURPOSE:To provide light rolling reduction method in the continuous casting to reduce the center segregation being generated at a center part of thickness in a continuously cast slab. CONSTITUTION:In the case casting speed reduces, by controlling a roll interval, the light rolling reduction range is shifted to the upstream side, and in the case the casting speed increases, the light rolling reduction range is shifted to the downstream side, and the rolling reduction speed in the light rolling reduction range is kept to the same of 0.5-1.2mm/min as before reducing or increasing the casting speed. The passing time from meniscus at the position of starting the rolling reduction is made to the time of solid phase ratio is 0.1-0.3, and at the position of ending the rolling reduction is made to the time becoming 0.5-0.7 solid phase ratio.

7. 发明专利

JPS5839025B2 失效
公开(公告)号：JPS5839025B2
公开(公告)日：1983-08-26
申请号：JP11586275
申请日：1975-09-25
申请人： NIPPON STEEL CORP
发明人： OKUMURA HARUHIKO , MIHARA HIRONOBU
IPC分类号： B22D43/00 , B22D37/00 , F27D3/15

8. 发明专利

JPS583756A DUMMY BAR CONTAINING DEVICE IN CONTINUOUS CASTING INSTALLATION 失效
公开(公告)号：JPS583756A
公开(公告)日：1983-01-10
申请号：JP10031781
申请日：1981-06-26
申请人： NIPPON STEEL CORP , HITACHI SHIPBUILDING ENG CO
发明人： MIHARA HIRONOBU , AO YOUJI , KIMURA HIDEO
IPC分类号： B22D11/08
摘要： PURPOSE:To perform casting without stopping by constituting a titled device in such a way that when it is not possible to hoist dummy bars on account of a trouble or the like the dummy bars are contained temporarily. CONSTITUTION:If a hoisting device side fails to operate on account of a trouble or neglection in operation, a suspension hook moves together with a dummy bar 12 as shown by imaginary lines (a), (b), (c) in accordance with the transfer-in of the bar 12. In the position (c), the bar 12 is disconnected from an ingot, and an oscillating flask body moves upward so that the bar 12 is lifted perfectly by an oscillating frame body 17 with the suspension hook held located in the position (d). The bar 12 is removed from a conveying roller table 2 by this in case the hoisting device fails to operate. At this time, the detaining projection of a device 21 for preventing reverse run and dropping of the dummy bar is engaged with a detaining pin for receiving and delivering.

9. 发明专利

JPH0635034B2 失效
公开(公告)号：JPH0635034B2
公开(公告)日：1994-05-11
申请号：JP30867488
申请日：1988-12-06
申请人： NIPPON STEEL CORP
发明人： MIMURA YOSHITO , MIHARA HIRONOBU , TAKAHASHI TAKAHARU
IPC分类号： B22D11/16

10. 发明专利

JPH0699257A INTERNAL GAS PRESSURE CONTROL METHOD FOR NOZZLE FOR CASTING 失效
公开(公告)号：JPH0699257A
公开(公告)日：1994-04-12
申请号：JP25003792
申请日：1992-09-18
申请人： NIPPON STEEL CORP
发明人： HORI RYUICHI , MIHARA HIRONOBU , MIZUTA HIROAKI , OMURA YASUMASA
IPC分类号： B22D11/10 , B22D11/16 , G01L7/00
摘要： PURPOSE:To reduce a pin hole generating rate of cast slab by using the internal gas pressure control method of a nozzle for casting as to continuous casting of steel. CONSTITUTION:When a variation quantity from the steady state value of the nozzle internal pressure inside an immersion nozzle 4 of a tundish for continuous casting exceeds the base value, by reducing an upper nozzle 1 Ar flow quantity, an apparent specific gravity of molten metal is raised, it makes the nozzle internal pressure return to the steady state value, or by increasing an upper nozzle Ar flow quantity, an apparent specific gravity of molten metal is reduced, thus, it executes the control to make the nozzle internal pressure return to the steady state value.

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