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11. 发明专利

JP2006213962A Method for producing steel controlling oxygen concentration in steel 审中-公开
标题翻译：钢铁生产钢管氧化浓度的方法
公开(公告)号：JP2006213962A
公开(公告)日：2006-08-17
申请号：JP2005027532
申请日：2005-02-03
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI
IPC分类号： C21C7/06 , B22D1/00 , C21C7/00 , C21C7/04
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel with which oxygen concentration in molten steel can surely be controlled at low cost without greatly changing the conventional steelmaking process.
SOLUTION: This production method is performed as the followings, by which after adding oxide powder having ≤200μm average grain diameter and containing ≥80 mass% of the total of one or more kinds among MnO
2 , MnO, NbO
2 , FeO and Cr
2 O
3 into the molten steel (containing 0.0001-0.5%C), casting is performed. If the addition of the above powder into the molten steel is performed after applying weak deoxidation by combining with one or more kinds of Si, Mn and Ti, further accurate and stable control can be obtained. It is desirable that the addition of the above powder is performed by carrying the powder with gas and injecting the power from a nozzle into the molten steel.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种钢的生产方法，其中可以以低成本可靠地控制钢水中的氧浓度，而不会大大改变常规的炼钢工艺。解决方案：该制备方法如下进行，其中在添加具有≤200μm平均粒径并且含有≥80质量％的MnO 2 中的一种或多种的氧化物粉末之后，，MnO，NbO 2 ，FeO和Cr 2 3 进入钢水（含有0.0001-0.5％C），进行铸造。如果通过与一种或多种Si，Mn和Ti结合进行弱脱氧之后，将上述粉末添加到钢水中，则可以进一步精确稳定地进行控制。希望添加上述粉末是通过携带气体并从喷嘴将动力注入钢水来进行的。版权所有（C）2006，JPO＆NCIPI

12. 发明专利

JP2005264335A Si killed steel having excellent fatigue strength and its production method 审中-公开
标题翻译：具有优异的疲劳强度的SI杀伤钢及其生产方法
公开(公告)号：JP2005264335A
公开(公告)日：2005-09-29
申请号：JP2005132330
申请日：2005-04-28
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI
IPC分类号： C21C7/00 , C21C7/04 , C21C7/06 , C22C38/00 , C22C38/14 , C22C38/28
CPC分类号： C21C7/0645 , C21C7/0075 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide Si killed steel in which the content of harmful large-sized inclusions is low, and, further, the remaining inclusions are ductile and finely dispersed ones, and which has excellent fatigue strength, and to provide its production method.
SOLUTION: The Si killed steel contains, by mass %, ≤0.003% Al, ≤0.003% Ti, ≤0.0010% Zr and 0.05 to 4.0% Si. Also, as the inclusions in the Si killed steel, by mass %, SiO
2 of ≤45% and 0.5 to 10% the oxide (R
2 O) of alkali metals R (R=Na, K and Li) are contained.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供有害的大型夹杂物的含量低的Si杀死的钢，另外，剩余的夹杂物是延展性和微细的，并且具有优异的疲劳强度，并且提供其生产方式。解决方案：Si杀死的钢以质量％计含有≤0.003％的Al，≤0.003％的Ti，≤0.0010％的Zr和0.05到4.0％的Si。此外，作为Si牺牲钢中的夹杂物，按质量％计，碱金属的氧化物（R SB 2 O 3）的SiO 2 ≤0.45％和0.5〜10％ R（R = Na，K和Li）。版权所有（C）2005，JPO＆NCIPI

13. 发明专利

JP2005059096A Continuous casting method of low-carbon sulfur-based free cutting steel 有权
标题翻译：基于低碳硫自由切割钢的连续铸造方法
公开(公告)号：JP2005059096A
公开(公告)日：2005-03-10
申请号：JP2004199624
申请日：2004-07-06
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KATO TORU , NISHI TAKAYUKI , MATSUI NAOKI , HASEGAWA TATSUYA
IPC分类号： B22D11/00 , C21C7/00 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a method which is capable of continuous casting of low-carbon sulfur-based free cutting steel without causing an internal crack or a surface crack.
SOLUTION: The continuous casting method is used for casting a molten low-carbon sulfur-based free cutting steel which contains 0.05-0.19% C , 1.0% or less Si, 0.4-2.0% Mn, 0.001-0.2% P, 0.2-0.69% S, less than 0.01% Pb, 0.2% or less Al, 0.001 to 0.02% O and 0.001 to 0.02% N, with the balance being Fe and impurities and in which the contents of Mn and S meet relations of [Mn%]×[S%] 5 . Further the above low-carbon sulfur-based free cutting steel may contain one or more elements out of either or both of groups (a) and (b) mentioned below: group (a) consisting of Cu, Ni, Cr, Mo, V and Nb and group (b) consisting of Ti, Se, Te, Bi, Sn, Ca, Mg and rare earth elements.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够连续铸造低碳硫基自由切削钢而不引起内部裂纹或表面裂纹的方法。
解决方案：连续铸造法用于铸造含有0.05-0.19％C，1.0％或更少的Si，0.4-2.0％Mn，0.001-0.2％P的熔融低碳硫基自由切削钢， 0.2-0.69％S，小于0.01％Pb，0.2％或更少的Al，0.001至0.02％的O和0.001至0.02％的N，余量为Fe和杂质，其中Mn和S的含量满足[ Mn％]×[S％] <0.9，[S％] <0.32×[Mn％] 5 。此外，上述低碳硫基自由切削钢可以含有下述（a）和（b）中的一种或两种中的一种或两种以上的组分：由Cu，Ni，Cr，Mo，V组成的组（a）和由Ti，Se，Te，Bi，Sn，Ca，Mg和稀土元素构成的组（b）。版权所有（C）2005，JPO＆NCIPI

14. 发明专利

JP2004292929A Steel for machine structural use 有权
公开(公告)号：JP2004292929A
公开(公告)日：2004-10-21
申请号：JP2003089959
申请日：2003-03-28
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI , KATO TORU , TAIRA HIROAKI , WATARI KOJI , MATSUI NAOKI , MATSUMOTO HITOSHI
IPC分类号： C22C38/00 , C22C38/06 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide inexpensive steel for machine structural use which does not substantially comprise Pb and has excellent machinability, and in which the anisotropy of mechanical properties is reduced.
SOLUTION: The steel for machine structural use has a chemical composition comprising 0.1 to 0.6% C, 0.03 to 2.0% Si, 0.2 to 2.0% Mn, 0.03 to 0.20% S, ≤0.1% P, 0.001 to 0.02% N, 0.0003 to 0.005% Al, 0.0001 to 0.01% Ca, 0.0005 to 0.005% O, and 0.0001 to 0.01% Te, and the balance Fe with impurities, and in which the content of Mg in the impurities is controlled to ≤0.001%, and comprises MnS-based inclusions including 0.1 to 0.6 atomic% Te and having a shape in which the width W is ≥2μm, and also, the ratio between the length L and the width W, L/W is ≤5 in the longitudinally vertical section. The steel can further comprise one or more kinds of metals selected from Ti, Cr, V, Mo, Nb, Cu, and Ni or/and one or more kinds of metals selected from Bi and REMs (rare earth metals).
COPYRIGHT: (C)2005,JPO&NCIPI

15. 发明专利

JP2010285677A Steel for induction hardening 有权
标题翻译：用于感应硬化的钢
公开(公告)号：JP2010285677A
公开(公告)日：2010-12-24
申请号：JP2009142393
申请日：2009-06-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MATSUNAGA KAZUNORI , MATSUMOTO HITOSHI , WATARI KOJI , NISHI TAKAYUKI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel for induction hardening which can suppress the generation of fatigue crack with impurities as a starting point, and is suitable for use as the stock for a component used in an environment subjected to repeated stress such as a crankshaft.
SOLUTION: The steel for induction hardening has a composition comprising, by mass, 0.35 to 0.45% C, 0.20 to 0.60% Si, 0.60 to 1.50% Mn, ≤0.030% P, 0.040 to 0.070% S, 0.10 to 0.40% Cr,
摘要翻译：解决的问题：提供一种能够抑制以杂质为起点的疲劳裂纹产生的感应淬火用钢，适用于在重复应力的环境中使用的部件的原料，例如作为曲轴。解决方案：用于感应淬火的钢具有质量分数为0.35-0.45％的Si，0.20-0.60％的Si，0.60到1.50％的Mn，≤0.030％的P，0.040到0.070的S，0.10到0.40 ％Cr，<0.010％Al，0.020〜0.100％Ti，≤0.0100％N，0.0005〜0.0030％B，0.0001〜0.0004％Ca和≤0.0030％O，进一步满足Ca / Al为0.015〜0.20，余量为Fe 杂质。版权所有（C）2011，JPO＆INPIT

16. 发明专利

JP2010248536A Method for manufacturing high manganese content metal 审中-公开
标题翻译：制造高锰含量金属的方法
公开(公告)号：JP2010248536A
公开(公告)日：2010-11-04
申请号：JP2009096090
申请日：2009-04-10
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI , TAMURA TEPPEI
IPC分类号： C21C7/00 , C21C7/068 , C21C7/10
摘要： PROBLEM TO BE SOLVED: To manufacture a high Mn content metal containing ≥10 mass% Mn by decarburizing and denitrogenizing the high Mn-containing molten metal composed by mass% of ≥10% Mn, ≥0.1% C, ≥0.001% N and the balance Fe with impurities.
SOLUTION: In the case of using a reduced pressure refining facility, in which a ladle holding the molten metal is accomodated into a vessel and the pressure is reduced together with the vessel, and the molten metal is refined in the ladle, and in the case of using a circulating type degassing facility having a vacuum vessel and an immersion tube, in the ladle a refractory containing ≥20 mass% MgO is used and oxygen gas is supplied under condition of 6,000-16,000 Pa atmospheric pressure in the vacuum vessel and 1,500-1,650°C temperature of high Mn content molten metal to apply the decarburization and the denitrogenization. The high Mn-contained molten metal can further contain by mass% of one or more elements selected in the group composed of ≤1% Si, ≤0.5% P, ≤0.5% S, ≤20% Cr, ≤1% Cu, and ≤10% Ni in stead of a part of Mn and Fe.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题为了通过对质量％≥10％Mn，≥0.1％C，≥0.001％的质量％组成的高含Mn熔融金属进行脱碳和脱氮来制造含有≥10质量％Mn的高Mn含量的金属， N和余量为Fe与杂质。解决方案：在使用减压精炼设备的情况下，其中将容纳熔融金属的钢包容纳到容器中并且压力与容器一起减少，并且熔融金属在钢包中精炼，并且在使用具有真空容器和浸入管的循环型脱气设备的情况下，在钢包中使用含有≥20质量％MgO的耐火材料，并且在真空容器中在6,000-16,000Pa大气压条件下供给氧气高锰含量熔融金属的温度为1500-1,650℃，进行脱碳脱氮。高Mn含量的熔融金属还可以以质量％计含有选自由1％Si，≤0.5％P，≤0.5％S，≤20％Cr，≤1％Cu组成的组中的一种或多种元素，以及 ≤10％Ni代替一部分Mn和Fe。版权所有（C）2011，JPO＆INPIT

17. 发明专利

JP2010047823A Method for producing clean steel by ladle-refining method 有权
标题翻译：通过精制方法生产清洁钢的方法
公开(公告)号：JP2010047823A
公开(公告)日：2010-03-04
申请号：JP2008215608
申请日：2008-08-25
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIROOKA RYOSUKE , NISHI TAKAYUKI , SUGIMOTO AKIHIRO
IPC分类号： C21C7/076 , C21C7/00 , C21C7/06 , C22C38/00 , C22C38/50
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a clean steel, such as a bearing steel having ≤0.0030% Ti and ≤0.0010% T.O by using a ladle-refining facility having pressure-reducing function while using flux containing no fluorine as the refining agent.
SOLUTION: After tapping off the molten steel from a converter or an electric furnace, the molten steel and slag are stirred and refined by using Ar or N
2 gas under reducing pressure in the ladle, and the flux containing the fluorine, is not used as refining agent, and the slag composition after ladle-refining, is made, by mass, to be ≤1.0% TiO
2 and 0.05-1.00% as the total of Na
2 O and K
2 O under condition of 30-60% CaO, 3.0-15% MgO, 10-30% Al
2 O
3 and 2.0-10.0 (%CaO/%SiO
2 ).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种清洁钢的制造方法，例如使用具有减压功能的钢包精炼设备，具有≤0.0030％Ti和≤0.0010％TO的轴承钢，同时使用不含氟作为精制剂。解决方案：在从转炉或电炉中取出钢水后，在钢包中通过使用Ar或N 2 SBB气体在减压下搅拌和精炼钢水和炉渣，含氟的助熔剂不用作澄清剂，钢包精炼后的炉渣组成按质量计为≤1.0％TiO 2 和0.05-1.00％在30-60％的CaO，3.0-15％的MgO，10-30％的Al 2 O的条件下， O 3 和2.0-10.0（％CaO /％SiO 2 ）。版权所有（C）2010，JPO＆INPIT

18. 发明专利

JP2007270178A Method for manufacturing extra-low sulfur steel 审中-公开
标题翻译：制造超低硫钢的方法
公开(公告)号：JP2007270178A
公开(公告)日：2007-10-18
申请号：JP2006094194
申请日：2006-03-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NUMATA MITSUHIRO , NISHI TAKAYUKI , HIGUCHI YOSHIHIKO
IPC分类号： C21C7/064 , C21C7/00 , C21C7/10 , C22C38/00 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing an extra-low sulfur steel, which can desulfurize molten steel better than a conventional method, by top-blowing a CaO-based desulfurization agent into the molten steel in a reduced pressure while using no fluorite and adding little Al to the molten steel.
SOLUTION: The molten steel includes 0.5% or less C, 0.01-2.0% Si, 0.2-2.0% Mn, 0.005% or less S and 0.01-0.5% Al. The method for manufacturing the extra-low sulfur steel by desulfurizing the molten steel through blowing a CaO-based flux containing no CaF
2 onto the surface under the reduced pressure includes controlling a feeding rate of the CaO-based flux V (kg/min/t) in terms of a pure CaO content can satisfy a relationship expressed by the following expression (1); 0.35×ln[Al]+1.9≥V≥0.32×ln[Al]+1.55, wherein [Al](%) is an Al content in the molten steel.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：为了提供一种制造超低硫钢的方法，其可以比常规方法更好地脱硫钢水，通过将CaO类脱硫剂以减压的方式向钢水中喷吹而不使用萤石并在钢水中加入少量Al。钢水含有0.5％以下的C，0.01〜2.0％的Si，0.2〜2.0％的Mn，0.005％以下的S和0.01-0.5％的Al。通过将不含CaF 2的CaO系焊剂在减压下吹入而使钢水脱硫来制造超低硫钢的方法包括控制CaO系的进料速度以纯CaO含量换算的熔剂V（kg / min / t）可以满足由下式（1）表示的关系： 0.35×ln [Al] +1.9≥V≥0.32×ln [Al] +1.55，其中[Al]（％）是钢水中的Al含量。版权所有（C）2008，JPO＆INPIT

19. 发明专利

JP2006299421A Method for producing v-containing steel 有权
标题翻译：生产含钒钢的方法
公开(公告)号：JP2006299421A
公开(公告)日：2006-11-02
申请号：JP2006172975
申请日：2006-06-22
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI , NUMATA MITSUHIRO
IPC分类号： C21C7/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel containing V, in which a cheap oxide can be used with the high yield of ≥85% without depending on an expensive ferroalloy in the case of melting the steel containing V.
SOLUTION: As the temperature condition at the adding time of Al and V oxide, respective temperatures of the temperature before adding, the temperature after adding and the temperature after secondary-refining, are the temperature higher 50-200°C than the liquidus temperature of the above molten steel and the ratio [V]/[Al] of [V] concentration in the molten steel to [Al] concentration of the molten steel, is 0.2-20.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种含有V的钢的方法，其中可以以高达≥85％的高产率使用便宜的氧化物，而不依赖于昂贵的铁合金在熔化含V的钢的情况下。解决方案：作为Al和V氧化物添加时的温度条件，加入前的温度，加入后的温度和二次精炼后的温度各自的温度比50-200℃高上述钢水的液相线温度以及钢水中的[V]浓度与[V]浓度的比[V] / [Al]相对于钢水的[Al]浓度为0.2〜20。版权所有（C）2007，JPO＆INPIT

20. 发明专利

JP2006028575A Method for producing high sulfur-containing steel 有权
标题翻译：生产高含硫钢的方法
公开(公告)号：JP2006028575A
公开(公告)日：2006-02-02
申请号：JP2004208335
申请日：2004-07-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHI TAKAYUKI , MATSUI NAOKI , OKAYAMA ATSUSHI , KATO TORU , HASEGAWA TATSUYA , AIZAWA MASAYUKI
IPC分类号： C21C7/00 , C21C7/072 , C21C7/076 , C22C38/00 , C22C38/60
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a high sulfur-containing steel containing no lead at the high stable sulfur content and at low cost, and a method for producing the high sulfur-containing steel containing Te at high yield. SOLUTION: (1) The producing method for high sulfur-containing steel is performed, in which this steel contains 0.01-0.15% C, ≤0.03% Si, 0.9-2.0% Mn, 0.40-0.70% S, 0.01-0.2% P, 0.003-0.03% N and 0.008-0.020% O, and Mn content in the molten steel at the slag refining in a ladle is controlled to ≤1.5% and MnO content in the slag is controlled to 25-40%, and in the above refining, a stirring index of the molten steel is adjusted to 10-100 (J/kg of molten steel). (2) In the above steel, further, Te is contained at 0.001-0.07% and after adding Te, the stirring index of the molten steel is adjusted to ≥10 (J/kg of molten steel). COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：提供一种高稳定硫含量且低成本地生产不含铅的高含硫钢的方法，以及高产量含有Te的高含硫钢的方法。解决方案：（1）进行高含硫钢的制造方法，其中该钢含有0.01-0.15％C，≤0.03％Si，0.9-2.0％Mn，0.40-0.70％S，0.01- 0.2％P，0.003-0.03％N和0.008-0.020％O，钢包中渣精炼时钢水中的Mn含量控制在≤1.5％，渣中的MnO含量控制在25-40％在上述精炼中，将钢水的搅拌指数调整为10〜100（J / kg钢水）。（2）另外，在上述钢中，Te含量为0.001-0.07％，加入Te后，将钢水的搅拌指数调整为≥10（钢水的J / kg）。版权所有（C）2006，JPO＆NCIPI

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