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41. 发明专利

JPH02236064A SEALING MATERIAL FOR HIGH TEMPERATURE CONNECTING PART 失效
公开(公告)号：JPH02236064A
公开(公告)日：1990-09-18
申请号：JP5556989
申请日：1989-03-08
申请人： SUMITOMO METAL IND
发明人： KAWAMOTO MASAYUKI , YAMADA TSUNEO , KAJIWARA KOJI , KASAI NOBUFUMI , NAKAI TAKESHI
IPC分类号： F16J15/14 , C01B35/10 , C04B22/08 , C04B28/00 , C04B35/10 , C21C7/10
摘要： PURPOSE:To compound a composition having excellent gastightness at high temperature and physical property corresponding to the working temperature mixing with cheap salt by using a material which is mainly composed of B2O3 and in melting condition at usual temperature of a connecting part. CONSTITUTION:A material which is mainly composed of B2O3 and in melting condition at usual temperature of a connecting part is used as a sealing material for high temperature connecting part. For improving gastightness of a connecting part, the sealing material must be in melting condition at the usual temperature of a device. Consequently, composition of the sealing material is selected so as to have a melting point under the usual temperature of the connecting part and a boiling point or a decomposition point over the temperature. When the connecting part is horizontal, the construction is so that the sealing material is fitted in the groove provided on the underside of the connecting part and upperside projection is soaked in the material. Further, even at vertical connecting part, the sealing material is sufficiently held in the clearance due to its viscosity, by applying appropriate pressure P from both sides.

42. 发明专利

JPH02137655A METHOD FOR MEASURING FLUCTUATION IN MOLTEN STEEL SURFACE AND METHOD FOR CONTROLLING SUCH FLUCTUATION 失效
公开(公告)号：JPH02137655A
公开(公告)日：1990-05-25
申请号：JP28821888
申请日：1988-11-15
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , NAKAI TAKESHI , NISHIYAMA SHINJI , SAKASHITA TSUTOMU
IPC分类号： B22D11/16 , B22D11/18
摘要： PURPOSE:To adequately maintain a casting speed by continuously measuring the molten steel surface level by means of a pair of sensors which are disposed to the right and left on the short sides of an immersion nozzle and move back and forth in the long side direction of a casting mold and determining the molten steel surface profile. CONSTITUTION:A molten steel 3 is discharged from a tundish through the immersion nozzle 2 from discharge ports 2a, 2b a shown with arrows. The molten steel 3 turns around partly upward and the molten steel surface 4 fluctuates largely. Powder 5 charged for the purpose of lubricating the casting mold on the molten steel surface 4 is introduced in a large amt. into the molten steel and flaws are generated on surface of an ingot 6 when the difference in the molten steel fluctuation on the right and left of the immersion nozzle is generated by sticking of Al2O3, base metal, etc., to the discharge ports. The sensors 10a, 10b on both sides of the immersion nozzle are scanned back and forth in the long side direction of the casting mold and the quantity of the fluctuation in the molten steel surface is detected in order to measure the fluctuation in the molten steel surface. The detected signals are amplified by amplifiers 11a, 11b and are inputted to a profile computing part 12 by which the difference in the molten steel surface fluctuation is calculated. A speed command is emitted from the computing part 12 to a motor 13 to change the casting speed in accordance with the detected difference. The intrusion of the powder, etc., into the molten steel is prevented in this way and the good-quality ingot is obtd.

43. 发明专利

JPH01122644A NOZZLE FOR CASTING 失效
公开(公告)号：JPH01122644A
公开(公告)日：1989-05-15
申请号：JP27913287
申请日：1987-11-06
申请人： TOSHIBA CERAMICS CO , SUMITOMO METAL IND
发明人： KAWAI KAZUHIDE , MORI HIROYUKI , OOYA SATOSHI , SUGITA KIYONARI , KAWASAKI MORIO , KASAI NOBUFUMI
IPC分类号： B22D11/10 , B22D41/54
摘要： PURPOSE:To prevent clogging of a nozzle caused by precipitation and deposit of Al2O3 in molten steel by constituting the inner wall part of the nozzle for casting the molten steel with the specific composition of CaO-SiO2 series refractory material. CONSTITUTION:At the time of casting the molten aluminum killed steel by using the nozzle 1 for casting, the nozzle body 3 is made of Al2O3-C refractory material having high refractoriness, and the inner wall part 2 in the nozzle is constituted of the refractory material having CaO and SiO2 as main component and 0.18-1.86 CaO/SiO2 ratio and also containing Al2O3 of 10wt.% of the total contents of CaO and SiO2. In this case, even if Si is substituted for a part of SiO2, Si is oxidized to SiO2 and has the same effect as SiO2. The Al2O3 precipitated from the molten steel is reacted with the above CaO-SiO2 refractory material to form the compound having low melting point, and as it is flowed out from the nozzle, it is prevented that nozzle can not come to use caused by deposit and clogging Al2O3 in the inner wall part of the nozzle.

44. 发明专利

JPS6483351A MANUFACTURE OF LANCE FOR TANDISH BUBBLING 失效
公开(公告)号：JPS6483351A
公开(公告)日：1989-03-29
申请号：JP23816487
申请日：1987-09-22
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , KAWASAKI MORIO
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B28B23/00
摘要： PURPOSE:To omit the manufacturing process, to execute the mass production, and to reduce the cost by packing a part between an outer frame and a cover with a monolithic refractory and calculating it, and attaching as one body a pipe for supplying inert gas in which the outside periphery of a mandrel has been covered with a refractory, to a manufactured lance body. CONSTITUTION:A monolithic refractory 13 is cast into a bottom part of an outer frame 11, and on the refractory 13, an inflammable core 14 is placed. On the upper face of this outer frame 11, a cover 12 for forming hiving a through-hole 15' for providing porous nozzle and a through-hole 16' for installing mandrel is placed, and between the cover 12 and the core 14, a porous nozzle 15 is positioned and provided, and also, a mandrel 16 is installed so as to pass through the cover 12 from the upper face of the core 14. Subsequently, from an inflow port of the cover 12, a monolithic refractory 13' is cast in, and calcined in a furnace. In this case, the core 14 is burnt and a space which becomes an accumulator 17 is formed, and a lance body 19 is obtained. To this lance body 19, a pipe 21 for supplying inert gas whose outside periphery has been covered with a refractory 20 is attached.

45. 发明专利

JPS63241110A PRODUCTION OF BLOCK FOR BUBBLING MOLTEN METAL 失效
公开(公告)号：JPS63241110A
公开(公告)日：1988-10-06
申请号：JP7571787
申请日：1987-03-27
申请人： SUMITOMO METAL IND , TOSHIBA CERAMICS CO
发明人： NAKAJIMA TAKAHARU , KAWASAKI MORIO , KASAI NOBUFUMI , SUGINO TAKAO , HIGASHIYAMA KOJI , YAMAMOTO HIDEHARU
IPC分类号： C21C7/072 , F27D3/16
摘要： PURPOSE:To easily produce the titled block having fine holes at fixed pitch by setting a cylindrical body placing an upper frame at the prescribed position of upper part in outer frame on bottom base, stretching fine wires between the upper frame and the bottom base at the prescribed pitch, filling up monolithic refractory between the outer frame and the bottom base and executing the heat treatment. CONSTITUTION:The outer frame 2 is positioned on the bottom base 1 and the cylindrical body 3 for forming accumulating chamber is held in the outer frame 2 at position having the prescribed interval from the bottom base 1 and the upper frame 4 is positioned on upper face of the cylindrical body 3. Next, the fine wires 5 (combustible material of cellulose, etc., having >=about 1mm diameter) are stretched between the upper frame 4 and the bottom base 1, at about 5-10mm pitch, and the monolithic refractory 6 is filled up between the outer frame 2 and the bottom base 1. Under this condition, it is heated by a drying furnace at about 300-600 deg.C for about 3-4hr and the fine wire 5 is burnt, to form fine holes 7 having

46. 发明专利

JPS61150751A HEATED MOLD AND METHOD FOR HORIZONTAL AND CONTINUOUS CASTING OF METAL 失效
公开(公告)号：JPS61150751A
公开(公告)日：1986-07-09
申请号：JP27956284
申请日：1984-12-26
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , MARUKAWA YUJO , KAWASAKI MORIO
IPC分类号： B22D11/04 , B22D11/045 , B22D11/128
摘要： PURPOSE:To improve the surface of an ingot by embedding heating means to the top and bottom surfaces or bottom surface near the pouring aperture of a water-cooled mold for continuous casting by drawing in two horizontal directions and oscillating horizontally the mold thereby suppressing the formation of the ununiform solidified shell on the bottom surface of the aperture and controlling the forming position. CONSTITUTION:The low-frequency induction heaters 5 are embedded into the top and bottom surfaces near the pouring aperture 2 of the water-cooled 6 mold 1 for continuous casting by drawing in the two horizontal directions. The mold is oscillated back and forth in the horizontal drawing direction by an oscillator 7. The forming position of the solidified shell is controlled while the ununiform molten metal flow and stagnation near the aperture are prevented and the generation of the ununiform solidified shell is suppressed. Surface defects such as cold shut, double skin and surface crack are thus eliminated. The continuous casting while the bottom surface is cooled with water by consisting the top surface of the mold of a heat insulating material and disposing an endless water-cooled belt in the drawing direction of the mold 1 oscillated on the bottom surface is equally satisfactory.

47. 发明专利

JP2007302908A High tensile strength steel plate and its manufacturing method 审中-公开
标题翻译：高强度钢板及其制造方法
公开(公告)号：JP2007302908A
公开(公告)日：2007-11-22
申请号：JP2006110976
申请日：2006-04-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHIO MASARU , KUMAKURA SEIJI , KASAI NOBUFUMI , SHIRAI YOSHIHISA , YAMANAKA AKIHIRO , HIRASHIRO TADASHI , SETA ICHIRO
IPC分类号： C22C38/00 , B22D11/128 , B22D11/20 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide an extra thick high tensile strength steel plate of ≥60 HT which is free from UST defects due to center porosities and has excellent internal quality, and to provide its manufacturing method. SOLUTION: (1) The steel plate is a 600 MPa grade high tensile strength steel plate of ≥60 mm plate thickness, which is manufactured from a continuously cast slab and characterized in having: a composition composed of, by mass, 0.02 to 0.15% C, 0.01 to 0.5% Si, 1.0 to 1.8% Mn, ≤0.02% P, ≤0.015% S, ≤0.008% N, 0.003 to 0.07% Al and the balance Fe with impurities; a carbon equivalent ranging from 0.3 to 0.5%; and a volume of center porosities ranging from 0.2×10 -4 to 1.0×10 -4 cm 3 /g. This steel plate can further contain one or more elements among Cu, Ni, Cr, Mo, Nb, V, Ti, B, Ca, Mg and REM. (2) The method for manufacturing the 600 MPa grade high tensile strength steel plate of ≥60 mm plate thickness is characterized in that: continuous casting is performed under the condition that, when (p) and (r) represent a rolling reduction at the end stage of solidification in continuous casting and a draft in the rolling of a slab into a plate, respectively, inequality r≥-0.25×p+3.75 is satisfied; and the resultant cast slab is heated to 900 to 1,250°C and rolled, and rolling is finished at ≥750°C finishing temperature. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供≥60HT的超厚的高抗拉强度钢板，由于中心孔隙度而没有UST缺陷并具有优良的内部质量，并提供其制造方法。解决方案：（1）钢板是由连续铸造的板坯制成的板厚为60mm的600MPa级的高抗拉强度钢板，其特征在于，具有以质量计0.02 至0.15％C，0.01〜0.5％Si，1.0〜1.8％Mn，≤0.02％P，≤0.015％S，≤0.008％N，0.003〜0.07％Al，余量为Fe与杂质; 碳当量为0.3至0.5％; 以及从0.2×10 -4 至1.0×10 -4 cm 3 / SP / g的中心孔隙体积。该钢板还可以含有Cu，Ni，Cr，Mo，Nb，V，Ti，B，Ca，Mg和REM中的一种或多种元素。（2）厚度≥60mm的600MPa级高抗拉强度钢板的制造方法的特征在于，在（p）和（r）表示轧制压下量的条件下进行连续铸造分别在连续铸造中凝固的末期阶段和将板坯轧制成板的牵伸力分别满足不等式r≥-0.25×p + 3.75; 将得到的铸坯加热至900〜1250℃并进行轧制，轧制结束于≥750℃的终轧温度。版权所有（C）2008，JPO＆INPIT

48. 发明专利

JPH08132203A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH08132203A
公开(公告)日：1996-05-28
申请号：JP27632194
申请日：1994-11-10
申请人： SUMITOMO METAL IND
发明人： OTA KOZO , YAMANAKA AKIHIRO , TANIZAWA YOSHINORI , KASAI NOBUFUMI
IPC分类号： B22D11/20 , B22D11/128 , B22D11/22 , B22D27/09
摘要： PURPOSE: To prevent the shrinking flow causing a center segregation due to an ideal light reduction by deciding the draft under consideration of solidified state of a cast slab according to casting condition. CONSTITUTION: In a continuous casting method applying the light rolling reduction to the cast slab in the solidified part at the end stage of the continuous cast slab, in the forced cooling condition, i.e., in the case the surface temp. of the cast slab at the inlet side of a rolling reduction zone is lower than 900 deg.C, or in the weak cooling condition, i.e., in the case this surface temp. is >=900 deg.C, the cast slab is rolled with the draft per unit time R' (mm/min) satisfying the following inequalities I or II, respectively. 4.9×10 D -2.2×10 D -2.4×10 D +2.0 D +3.0×10- D -1.7×10- D+0.6...I, 9.9×10 ×D -8.9×10 D -2.2×10 D+2.4 D +3.0×10 D -1.7×10 D+0.7...II. Wherein, D is non-solidified thickness during rolling reduction (mm). The range of the non-solidified thickness (D) is divided into three, and the upper limit and the lower limit in the draft (R') in each division are obtd. and the draft within this range can be adjusted.

49. 发明专利

JPH05318058A DEVICE FOR PREVENTING EROSION OF IMMERSION NOZZLE FOR CONTINUOUS CASTING 失效
公开(公告)号：JPH05318058A
公开(公告)日：1993-12-03
申请号：JP12067392
申请日：1992-05-13
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , SHINOZUKA TASAYUKI
IPC分类号： B22D11/10
摘要： PURPOSE:To eliminate the erosion of an immersion nozzle for continuous casting caused by contact with a molten powder layer on molten metal in a mold at the time of continuously casting the molten metal. CONSTITUTION:A powder shut-off member 3 composed of a material having higher m.p. than the temp. of molten powder layer 12 on the molten steel 10 surface in the mold 9 and arranged so as to be apart from the immersion nozzle 1 for continuous casting at the height contacting with powder layer 4 and the molten powder layer 12 existing on the molten steel 10 surface while surrounding the powder line part 2 of the immersion nozzle 1 for continuous casting and arranged so as to be vertically shiftable is provided.

50. 发明专利

JPH05293614A 失效
公开(公告)号：JPH05293614A
公开(公告)日：1993-11-09
申请号：JP9682492
申请日：1992-04-16
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , MIYAZAKI OSAMU , SHINOZUKA TASAYUKI
IPC分类号： B22D11/10 , B22D11/106 , B22D41/58
摘要： PURPOSE:To improve an inert gas sealing method in a pouring tube and to eliminate metal stickness to the pouring tube and secondary oxidation of molten steel in every case. CONSTITUTION:In the pouring tube 14 in a tundish for continuous casting composed of a refractory arranged at the upper part of the tundish 13 in order to pour the molten steel into the tundish 13 by shutting off the air through a sliding nozzle 12 arranged at the bottom part of a ladle 11, the pouring tube 14 including a gas supplying passage 17 for blowing the inert gas and also a blowing hole composed of a refractory 18 giving a porous refractory or a penetrating hole arranged at the molten steel hitting part in the inner surface of the tundish are provided.

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