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1. 发明专利

JPH02179343A METHOD FOR CONTINUOUSLY CASTING STRIP 失效
公开(公告)号：JPH02179343A
公开(公告)日：1990-07-12
申请号：JP32924488
申请日：1988-12-28
申请人： NISSHIN STEEL CO LTD , HITACHI LTD
发明人： YAMAUCHI TAKASHI , HASEGAWA MORIHIRO , MORIKAWA HIROSHI , KIMURA TOMOAKI , NISHINO TADASHI
IPC分类号： B21B1/46 , B22D11/06 , B22D11/12
摘要： PURPOSE:To prevent generation of surface crack and surface pattern in a cold- rolled product by specifying surface roughness on circular surfaces of one pair of rolls in contact with molten metal and flattening the rough surface transferred on surface of a strip with hot rolling roll. CONSTITUTION:The circular surfaces of one pair of the cooling rolls 1a, 1b mutually rotating to reverse direction in contact with the molten metal are made to the rough surfaces having 4-50mum in the range of surface roughness Ra. The strip 4 passed through gap between a pair of the rolls 1a, 1b is continuously passed through the light rolling reduction hot-rolling rolls 5a, 5b during keeping this to the hot temp. and the rough surface transferred on the strip surface is flattened with these rolls 5a, 5b. By this method, the generation of surface crack and surface pattern in the cold-rolled product caused by uneven cooling at the time of developing the solidified shell are prevented and the good quality strip can be produced at high yield.

2. 发明专利

JPH04351250A METHOD FOR CONTINUOUSLY CASTING STRIP 失效
公开(公告)号：JPH04351250A
公开(公告)日：1992-12-07
申请号：JP15094891
申请日：1991-05-28
申请人： NISSHIN STEEL CO LTD , HITACHI LTD
发明人： MORIKAWA HIROSHI , HASEGAWA MORIHIRO , YAMAUCHI TAKASHI , KIMURA TOMOAKI , NISHINO TADASHI , HIRANO SATOSHI
IPC分类号： B22D11/06 , B22D11/16
摘要： PURPOSE:To prevent the development of the pattern caused by uneven cooling by measuring surface temp. distribution in a strip continuously coming out in the parallel direction to roll axis and controlling revolution speed of rolls so as to be in the setting range. CONSTITUTION:Molten metal in pouring basin 2 is cooled with a pair of the rolls 1a, 1b to continuously cast the strip 3. The surface temp. of strip 3 is detected with a camera 8 and converted into the digital signal of the temp. with a signal-trestment part 9. This digital signal is received by a control circuit 21 and compared with the setting value and the control circuit instructs a speed controller 22 so as to make slow revolution to a motor 18 in the case it is higher and to make quick revolution to the motor 18 in the case it is lower. Just after starting the casting, the pressing load of the rolls 1a, 1b is measured with load cells 14, 17 and the motor 18 is controlled so that the pressing load becomes the prescribed value or lower, and after becoming the stationry condition, this is switched to the control keeping the surface temp. of strip 3. The strip 3 without having uneven cooling pattern can be produced.

3. 发明专利

JPH01215442A TWIN ROLL TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01215442A
公开(公告)日：1989-08-29
申请号：JP4280588
申请日：1988-02-25
申请人： NISSHIN STEEL CO LTD , HITACHI LTD
发明人： MORIKAWA HIROSHI , HASEGAWA MORIHIRO , YABUKI TAKASHI
IPC分类号： B22D11/06
摘要： PURPOSE:To instantaneously change roll gap in accordance with plate thickness and to continuously produce the thin plate having the constant thickness by inserting elastic means energizing a first chock at the fixed roll side between the first chock and a second chock. CONSTITUTION:The elastic means 17 is inserted in a cylinder chamber 16 and energizing force of the elastic means 17 is received with a piston 18 and one side of ends of the piston 18 is connected with bottom of the first chock 13. With the laps of time since starting of the pouring, the contacting length of molten metal with the roll is lengthened and cast plate thickness is thickened. Corresponding to this thickness, the thin plate 6 itself compresses to the elastic means 17 and the first chock 13 is retreated. At the time of steady casting, the chock 13 is parallel shifted toward the facing direction to the second chock 14 by the aimed thin plate thickness and the bottom face 28 of the first chock 13 body on the recessed bottom face 29 of the second chock 14 is maintained under abutting condition.

4. 发明专利

JPH035048A APPARATUS FOR CONTINUOUSLY CASTING METAL STRIP 失效
公开(公告)号：JPH035048A
公开(公告)日：1991-01-10
申请号：JP13962989
申请日：1989-06-01
申请人： NISSHIN STEEL CO LTD , HITACHI LTD
发明人： MORIKAWA HIROSHI , HASEGAWA MORIHIRO , KIMURA TOMOAKI , NISHINO TADASHI
IPC分类号： B22D11/06
摘要： PURPOSE:To regulate flow of molten metal flowing toward gaps between bottom part of long side dams and circular faces of rolls with electromagnetic force by conducting high frequency current to coils set at outer part of both long side dams in a twin roll bype continuous casting machine arranged with the long side dams under non-contacting condition. CONSTITUTION:The coils 9a, 9b are set as long extending toward the same direction as the long side dams 4a, 4b at near gap S of outer part of the long side dams 4a, 4b, and by conducting the high frequency current to these, AC magnetic field is acted to the molten metal in pouring basin. At the same time of generating the AC magnetic field H in the molten metal, on the surface layer part of the solidified shell 18 of the shells 8a 8b formed at the circular surfaces of the rolls, eddy current having reverse phase to the coil current is conducted. By the relative action between the eddy current conducted on this solidified shell surface and the magnetic field A, the electromagnetic force is worked. Therefore, by suitably adjusting the intensity of the electromagnetic force, this is almost equalized with the static pressure of the molten metal penetrated into the gap S or by making this a little higher than the static pres sure thereof, the molten metal flow flowing into the gap S can be controlled.

5. 发明专利

JP2013208641A Continuous casting method 有权
标题翻译：连续铸造方法
公开(公告)号：JP2013208641A
公开(公告)日：2013-10-10
申请号：JP2012080141
申请日：2012-03-30
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： HONDA HIROKI , MORIKAWA HIROSHI
IPC分类号： B22D11/106 , B22D11/00 , B22D11/10 , B22D11/108
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method which suppresses an increase in a nitrogen content and reduces surface defects in casting a metal piece.SOLUTION: A continuous casting device 100 for casting a stainless steel piece 3c includes a long nozzle 2 extending in a tundish 101 and arranged on a ladle 1 in order to inject stainless molten steel 3 in the ladle 1 into the tundish 101. Furthermore, nitrogen gas 4 as seal gas is supplied in a periphery of the stainless molten steel 3 in the tundish 101. As an injection port 2a of the long nozzle 2 is immersed in the stainless molten steel 3 in the tundish 101, the stainless molten steel 3 is injected in the tundish 101 through the long nozzle 2, and the stainless molten steel 3 in the tundish 101 is injected in a mold 105 to continuously cast the stainless steel piece 3c.
摘要翻译：要解决的问题：提供一种连续铸造方法，其抑制氮含量的增加并减少铸造金属片时的表面缺陷。解决方案：用于铸造不锈钢片3c的连续铸造装置100包括长喷嘴2，中间包101并且设置在钢包1上，以将钢水包1中的不锈钢3注入到中间包101中。此外，作为密封气体的氮气4被供给到中间包101中的不锈钢3的周边。当长喷嘴2的喷射口2a浸没在中间包101中的不锈钢3中时，不锈钢3通过长喷嘴2注入中间包101中，中间包101中的不锈钢3 注入到模具105中以连续铸造不锈钢片3c。

6. 发明专利

JP2012077385A Electric resistor material 有权
标题翻译：电阻材料
公开(公告)号：JP2012077385A
公开(公告)日：2012-04-19
申请号：JP2011256334
申请日：2011-11-24
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： MORIKAWA HIROSHI , BABAZONO KATSUNORI , FUJII TAKAHIRO , YAMAUCHI TAKASHI
IPC分类号： C22C38/00 , C22C38/58 , H01C1/01
摘要： PROBLEM TO BE SOLVED: To provide an electric resistor material of high electric resistivity reduced in temperature dependency of the electric resistivity, and capable of restraining a noise caused by a magnetic field generated when a current flows.SOLUTION: This electric resistor material contains 0.1% or less of C, 5% or less of Si, 6% or less of Mn, 9-32% of Cr, 6-25% of Ni, 0.2% or less of N, 0-3% of Mo, 0-4% of Cu, 0-5% of Al, 0-0.4% of Ti, 0-0.4% of Nb, and 0-0.005% of B, and is regulated to bring an A value defined by Expression (1) into 78 or more, and to bring a B value defined by Expression (2) into 14 or more (wherein, A=0.008×(%Cr)-0.43×(%Cr)+8.03×(%Cr)+6.8×(%Si)+10.9×(%Al)+0.56×(%Mo)+0.92×(%Ni) (1), and B=(%Ni)+(%Cu)+0.6×(%Mn)+9.69×(%C+%N)+0.18×(%Cr)-0.11×(%Si)(2)).
摘要翻译：要解决的问题：提供一种电阻率降低的电阻率降低的电阻材料，并且能够抑制由电流产生的磁场引起的噪声。解决方案：该电阻材料含有0.1％以下的Si，5％以下的Si，6％以下的Mn，9〜32％的Cr，6〜25％的Ni，0.2％以下的 N，0-3％的Mo，0-4％的Cu，0-5％的Al，0-0.4％的Ti，0-0.4％的Nb和0-0.005％的B，并被调节为带来由式（1）定义为78以上的A值，将由式（2）定义的B值设为14以上（其中，A = 0.008×（％Cr） 3 -0.43×（％Cr） 2 + 8.03×（％Cr）+ 6.8×（％Si）+ 10.9×（％Al）+0.56×（％ Mo）+ 0.92×（％Ni）（1），B =（％Ni）+（％Cu）+ 0.6×（Mn）+ 9.69×（％C +％N）+ 0.18×（％Cr）-0.11 ×（％Si） 2 （2））。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2010121162A Method for manufacturing nickel-saving type hot-rolled austenitic stainless steel sheet, slab and hot-rolled steel sheet 有权
标题翻译：制备镍保护型热轧不锈钢不锈钢板，板材和热轧钢板的方法
公开(公告)号：JP2010121162A
公开(公告)日：2010-06-03
申请号：JP2008295205
申请日：2008-11-19
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： ISOZAKI SEIICHI , SUETSUGU TERUHIKO , SUZUKI SATOSHI , MORIKAWA HIROSHI
IPC分类号： C21D8/02 , B21B3/02 , C21D9/46 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To suppress occurrence of edge-cracking in a hot-rolled Ni-saving type austenitic stainless steel with reduced Mn content. SOLUTION: The method for manufacturing the hot-rolled Ni-saving type austenitic stainless steel sheet comprises: a slab composed, by mass, of >0.05% C, satisfying a formula: 0.10%≤C+0.5N≤0.25%, and ≤4% Si, 0.5 to 16 to 19% Cr, >0.05% N in the above formula, 0.8-3.5% Cu and the balance Fe with inevitable impurities, is held in the temperature range of the austenitic-single phase at 1100-1250°C; the slab is made to have structural-state having ≤4% δ-ferritic phase area ratio in the range within 100 μm from the slab edge part and ≤30 μm average value of the upper class 20% in the δ-ferritic phase long diameter; and hot-rolling is applied to the slab. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了抑制Mn含量降低的热轧Ni-型奥氏体不锈钢中发生边缘裂纹。解决方案：制造热轧Ni-型奥氏体不锈钢板的方法包括：质量大于0.05％C的板坯，满足公式：0.10％≤C+0.5N≤0.25％，≤4％的Si，0.5〜3％的Mn，≤0.06％的P，≤0.005％的S，0.5〜5的Ni，16〜19％的Cr，> 0.05以上的N，0.8〜3.5 ％Cu和余量为Fe的不可避免的杂质在1100-1250℃保持在奥氏体单相的温度范围内; 使板坯的结构状态具有≤4％的δ-铁素体相面积比在距板坯边缘部分的100μm以内的范围内，并且δ-铁素体相长度的≤30μm的上层平均值为20％以上 ; 并对板坯进行热轧。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2007321182A Automobile member having high collision absorbing performance 审中-公开
标题翻译：具有高冲击吸收性能的汽车部件
公开(公告)号：JP2007321182A
公开(公告)日：2007-12-13
申请号：JP2006151007
申请日：2006-05-31
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： ISOZAKI SEIICHI , SUZUKI SATOSHI , MORIKAWA HIROSHI
IPC分类号： C22C38/00 , B23K11/00 , B23K11/11 , B23K103/04 , C21D9/46 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide an automobile member having excellent collision absorbing performance by using a stainless steel sheet having high strength as the stock, and controlling the shape of a nugget formed by spot welding.
SOLUTION: The automobile member is assembled by subjecting a stainless steel sheet containing, by mass, ≤0.15% C, ≤1.0% Si, ≤2.0% Mn, 6.0 to 11.0% Ni, 16.0 to 22.0% Cr and ≤0.20% N to spot welding. The nugget formed by the spot welding has a thickness D
1 ; D
1 =(0.6 to 1.6)×t and a diameter D
2 ; D
2 =(3.0 to 5.5)×t in the relation with the sheet thickness t of the stainless steel sheet. The weld zone has a metal structure comprising an austenitic phase preferably in the ratio of ≥30 vol.%.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过使用具有高强度的不锈钢板作为坯料来提供具有优异的碰撞吸收性能的汽车构件，并且控制通过点焊形成的熔核的形状。解决方案：通过对含有≤0.15％C，≤1.0％Si，≤2.0％Mn，6.0〜11.0％Ni，16.0〜22.0％Cr和≤0.20质量％的不锈钢板进行组装，％N点焊。通过点焊形成的熔核具有厚度D 1 ; D 1 =（0.6〜1.6）×t，直径D 2 ; D 2 =（3.0〜5.5）×t与不锈钢板的板厚t的关系。焊接区域具有包含奥氏体相的金属结构，优选比例为≥30体积％。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2005240062A Hydrophilic stainless steel plate, and method for manufacturing the same 审中-公开
标题翻译：水泥不锈钢板及其制造方法
公开(公告)号：JP2005240062A
公开(公告)日：2005-09-08
申请号：JP2004047518
申请日：2004-02-24
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： FUJII TAKAHIRO , BABAZONO KATSUNORI , KATSUKI JUNICHI , MORIKAWA HIROSHI
IPC分类号： C23C8/18 , C21D1/76 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/48
摘要： PROBLEM TO BE SOLVED: To provide a hydrophilic stainless steel plate having excellent pollution resistance, maintenance-free, and recyclability at low cost.
SOLUTION: A belt-polished stainless steel plate in which the center line mean roughness Ra of profile in the direction orthogonal to the rolling direction exceeds 0.30 μm is subjected to the finish bright annealing under the condition of the temperature and the humidity to satisfy the relationship D ≤ 0.067 × T-107, D ≤ -40, and T ≥ 850, where T (°C) is the temperature and D(°C) is the dew point in the hydrogen-nitrogen mixing gas atmosphere in which the nitrogen ratio is ≤ 15 vol.%, and the stainless steel plate is obtained, in which the film deposited on the surface thereof is formed of oxides mainly consisting of SiO
2 having a composition consisting of, by atom, except C, ≥ 12% Si, ≤ 5% Nb, ≤ 10% N, and the balance Al, Mn, Cr, Fe and O.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有优异的耐污染性，免维护和可回收性的亲水性不锈钢板，成本低廉。＆lt; P＆gt;解决方案：在与轧制方向正交的方向上的中心线平均粗糙度Ra在0.30μm以上的带式抛光不锈钢板在温度和湿度的条件下进行光亮退火，满足D≤0.067×T-107，D≤40和T≥850的关系，其中T（℃）是温度，D（℃）是氢 - 氮混合气体气氛中的露点，其中氮比≤15体积％，得到不锈钢板，其中沉积在其表面上的膜由主要由SiO 2 由SiO 2组成的氧化物形成，其组成由原子，除了C，≥12％Si，≤5％Nb，≤10％N，余量为Al，Mn，Cr，Fe和O.版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004300471A Method for manufacturing martensitic stainless steel superior in corrosion resistance and toughness 有权
公开(公告)号：JP2004300471A
公开(公告)日：2004-10-28
申请号：JP2003092081
申请日：2003-03-28
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： HIROTA RYUJI , SUETSUGU TERUHIKO , MORIKAWA HIROSHI
IPC分类号： C21D6/00 , C22C38/00 , C22C38/18 , C22C38/28
摘要： PROBLEM TO BE SOLVED: To provide a method for inhibiting Cr in a surface layer from being oxidized and nitrided even during quenching-tempering treatment, and thereby stably manufacturing a martensitic stainless steel superior in corrosion resistance and toughness.
SOLUTION: This stainless steel has a composition comprising 0.05-1.20 mass% C, 8.0-18.0 mass% Cr, 1.0 mass% or less Si, 1.0 mass% or less Mn, 0.05-1.0 mass% Ti and/or Nb as needed, and the balance substantially Fe. The manufacturing method comprises quenching a steel sheet having the above composition in a hydrogen and nitrogen atmosphere having the conditions of such a dew point DP (°C) and a temperature T (°C) as to satisfy the following expressions (1) and (2), (wherein expression (1) is 0.0095T-168≤DP≤0.105T-132; and expression (2) is 950≤T≤1200), or in the hydrogen atmosphere having the conditions of such a dew point DP (°C) and a temperature T (°C) as to satisfy the following expressions (2) and (3), (wherein expression (2) is 950≤T≤1200; and expression (3) is DP≤0.105T-132); and then tempering it at a temperature of Ac
1 or lower.
COPYRIGHT: (C)2005,JPO&NCIPI

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