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101. 发明专利

JP2007231302A Soft-nitrided stock for crankshaft having excellent strength and bending straightening property and its production method 审中-公开
标题翻译：具有优异强度和弯曲强度特性的起重机的软质硝酸盐及其生产方法
公开(公告)号：JP2007231302A
公开(公告)日：2007-09-13
申请号：JP2006050566
申请日：2006-02-27
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： KIMURA KAZUYOSHI , SUWA SATORU , MURAKAMI ATSUSHI
IPC分类号： C22C38/00 , C21D1/06 , C21D1/28 , C21D8/00 , C21D9/30 , C22C38/60 , C23C8/32
摘要： PROBLEM TO BE SOLVED: To provide a soft-nitrided stock for a crankshaft, maintaining excellent strength and further having excellent bending straightening properties upon bending straightening following soft nitriding treatment.
SOLUTION: The soft-nitrided stock for a crankshaft has a composition comprising, by mass, 0.35 to 0.55% C, 0.05 to 0.5% Si, 0.6 to 1.2% Mn, 0.01 to 0.5% Cu, 0.01 to 0.5% Ni, 0.05 to 0.6% Cr, 0.01 to 0.40% V, 0.04 to 0.1% S, 0.001 to 0.01% s-Al, 0.0005 to 0.02% Ca and 0.001 to 0.04% N, and the balance Fe with inevitable impurities, and further has a structure of ferrite+pearlite in which the respective components are regulated in such a manner that, when the content of V capable of being solid-soluted into γ upon normalizing heating is defined as [V] and a carbon equivalent is defined as C[eq.], the following relationship, C[eq.]=C+0.07Si+0.16Mn+0.19Cu+0.17Ni+0.2Cr+[V], satisfies 0.58 to 0.89%.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于曲轴的软氮化的原料，保持优异的强度，并且在软氮化处理后的弯曲矫直时进一步具有优异的弯曲矫直性能。＆lt; P＆gt;解决方案：曲轴的软质氮化物料具有质量分数为0.35〜0.55％的Si，0.05〜0.5％的Si，0.6〜1.2％的Mn，0.01〜0.5％的Cu，0.01〜0.5％的Ni ，0.05〜0.6％的Cr，0.01〜0.40％的V，0.04〜0.1％的S，0.001〜0.01％的s-Al，0.0005〜0.02％的Ca和0.001〜0.04％的N，余量为Fe与不可避免的杂质，铁素体+珠光体的结构，其中各组分被调节为使得当在加热标准化时固溶在γ中的V的含量被定义为[V]，碳当量定义为C [ 等式]，以下关系式C [eq。] = C + 0.07Si + 0.16Mn + 0.19Cu + 0.17Ni + 0.2Cr + [V]满足0.58〜0.89％。版权所有（C）2007，JPO＆INPIT

102. 发明专利

JP2007217783A High-strength low-alloy steel boiler tube for which heat-treatment is simplified and method of manufacturing the same 有权
标题翻译：用于热处理的高强度低合金钢锅炉管及其制造方法
公开(公告)号：JP2007217783A
公开(公告)日：2007-08-30
申请号：JP2006043054
申请日：2006-02-20
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MURAKI TARO , ASAHI HITOSHI
IPC分类号： C22C38/00 , C21D1/28 , C21D9/08 , C22C38/22 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-strength low-alloy steel boiler tube for which heat-treatment is simplified and which is excellent in long-term creep rupture property and high-temperature strength property when used in a high-temperature/high-pressure environment, and a method of manufacturing the same. SOLUTION: The high-strength low-alloy steel boiler tube for which heat-treatment is simplified comprises, by mass, 0.03-0.15% C, 0.10-0.80% Si, 0.10-1.50% Mn, ≤0.030% P, ≤0.010% S, ≤0.020% O, 0.001-0.01% N, ≤0.01% Al, 0.30-0.80% Cr, ≥0.01% but COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种热处理简化的高强度低合金钢锅炉管，并且当用于高温时，具有优异的长期蠕变断裂性和高温强度特性，温度/高压环境及其制造方法。解决方案：简化热处理的高强度低合金钢锅炉管质量为0.03-0.15％C，0.10-0.80％Si，0.10-1.50％Mn，≤0.030％P， ≤0.010％S，≤0.020％O，0.001-0.01％N，≤0.01％Al，0.30-0.80％Cr，≥0.01％但Mo为基本成分为0.50％，余量为Fe和不可避免的杂质，优选为铁素体分数为10-90％的金属结构，在正常化后不进一步处理。版权所有（C）2007，JPO＆INPIT

103. 发明专利

JP3514182B2 Low Cr ferritic heat-resistant steel and manufacturing method thereof having excellent high-temperature strength and toughness 有权
公开(公告)号：JP3514182B2
公开(公告)日：2004-03-31
申请号：JP24421899
申请日：1999-08-31
申请人：住友金属工業株式会社
发明人：佳織宮田
IPC分类号： C21D8/00 , C21D1/28 , C21D6/00 , C21D6/02 , C21D8/02 , C22C38/00 , C22C38/22 , C22C38/26 , C22C38/32
CPC分类号： C21D1/28 , C21D6/002 , C21D6/02 , C21D8/0226 , C21D2211/002 , C21D2211/004 , C21D2211/008 , C22C38/001 , C22C38/22 , C22C38/26 , C22C38/32

104. 发明专利

JP2002302715A METHOD FOR MANUFACTURING STEEL PRODUCT 失效
公开(公告)号：JP2002302715A
公开(公告)日：2002-10-18
申请号：JP2001108798
申请日：2001-04-06
申请人： HONDA MOTOR CO LTD
发明人： ISHII KAZUO , OKADA YOSHINARI
IPC分类号： C21D1/06 , C21D1/28 , C21D1/74 , C21D6/00 , C21D6/02 , C21D7/02 , C21D8/00 , C22C38/00 , C22C38/14 , C23C8/02 , C23C8/26
摘要： PROBLEM TO BE SOLVED: To provide uniform residual stress by a rapid treatment and to provide a steel product having high fatigue strength. SOLUTION: Maraging steel is subjected to cold plastic working to prescribed size and then subjected to solution treatment at 750-800 deg.C for >=60 min and aging treatment, followed by nitriding treatment if necessary. The ratio of the concentration of solid-solution Ti in the vicinity of the surface after the above solution treatment to the average concentration of solid-solution Ti is made to >=0.9.

105. 发明专利

JP2002020832A HIGH TENSILE STRENGTH STEEL EXCELLENT IN HIGH TEMPERATURE STRENGTH AND ITS PRODUCTION METHOD 失效
公开(公告)号：JP2002020832A
公开(公告)日：2002-01-23
申请号：JP2000201951
申请日：2000-07-04
申请人： NIPPON STEEL CORP
发明人： WATABE YOSHIYUKI , TERADA YOSHIO , CHIJIIWA RIKIO
IPC分类号： C21D8/02 , C21D1/18 , C21D1/28 , C21D6/00 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide high tensile strength steel excellent in high temperature strength and also good in weldability and toughness and to provide its production method. SOLUTION: This steel contains, as components, C, Si, Mn, Mo, Al, Nb, V and Ti, and the balance iron and, if required, contains Cu, Ni, Cr, Mg, Ca and rare earth metals. In its production method, after reheating at 1,000 to 1,250 deg.C, the cumulative draft at =30%, rolling is finished at >=750 deg.C, after that, air cooling or accelerated cooling from >=700 to Ac1 to

106. 发明专利

JP2001140015A Cr-Mo STEEL AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2001140015A
公开(公告)日：2001-05-22
申请号：JP32411899
申请日：1999-11-15
申请人： SUMITOMO METAL IND
发明人： BEPPU KENICHI , ITO HIROSHI , KONDO KUNIO
IPC分类号： C21D6/00 , C21D1/28 , C22C38/00 , C22C38/28
摘要： PROBLEM TO BE SOLVED: To provide a Cr-Mo steel composed of fine crystal grain, in which the growth of course crystal grain is surely restrained with an easy temperature control and a simple means, and its manufacturing method. SOLUTION: As the composition of the Cr-Mo steel, one or more kinds selected from group composed of 0.05-0.50% V, 0.05-0.50% Nb and 0.005-0.50% Ti, are blended and also, previous to the application of a normalizing, after holding the temperature of 650 deg.C to Ac3 point and cooling, the normalizing is applied. As an alternative way, previous to the application of the normalizing, after holding the temperature of 650 deg.C to Ac3 point, the normalizing is applied without executing the cooling.

107. 发明专利

JP2984163B2 失效
公开(公告)号：JP2984163B2
公开(公告)日：1999-11-29
申请号：JP6733593
申请日：1993-03-04
申请人： SHINNIPPON SEITETSU KK , NIPPON CHUTANKO KK
发明人： NIINUMA SHINICHI , TAKAHASHI TAKASHI , YAMAUCHI ISAO , IKENOSAKO MASAAKI
IPC分类号： C21B3/10 , C21C5/46 , C21D1/28 , C21D9/00

108. 实用新型

JPH063351Y2 失效
公开(公告)号：JPH063351Y2
公开(公告)日：1994-01-26
申请号：JP1037987
申请日：1987-01-27
IPC分类号： C21D1/00 , C21D1/28 , F27B9/24

109. 发明专利

JPH0124204B2 失效
公开(公告)号：JPH0124204B2
公开(公告)日：1989-05-10
申请号：JP26520084
申请日：1984-12-18
申请人： CATERPILLAR MITSUBISHI LTD
发明人： KAWAMURA JUZO , OOTSUBO TOSHIO
IPC分类号： C22C38/00 , C21D1/28 , C21D6/00 , C22C38/24

110. 发明专利

JPS6431923A HEAT TREATMENT FOR PREVENTING CARBURIZING OF LEAD STEEL 失效
公开(公告)号：JPS6431923A
公开(公告)日：1989-02-02
申请号：JP18829787
申请日：1987-07-28
申请人： DAIDO STEEL CO LTD
发明人： MARUNO YOSHIKAZU , MORI KENZO , OKANO KIMITAKA
IPC分类号： C21D6/00 , C21D1/28
摘要： PURPOSE:To effectively obviate a carburizing phenomenon in a surface-layer part and to prevent the occurrence of cracks, etc., at the time of drawing, etc., by previously carrying out preheat treatment at a temp. lower than the normalizing temp. at the time of subjecting a lead steel to normalizing. CONSTITUTION:First, a Pb-containing lead steel is previously subjected to heat treatment at a temp. lower than the normalizing temp. and then to normal normalizing treatment. By this method, an increase in C content in a surface-layer part is not observed, that is, a carburizing phenomenon in the surface-layer part is obviated, and accordingly, the occurrence of cracks, etc., is prevented even when this steel is subjected to drawing, etc. In the lead steel as mentioned above, a decarburizing phenomenon is produced, in part, in the surface-layer part when this steel is previously subjected, prior to normalizing treatment, to pretreatment at a lower temp., preferably at a temp. of the A3 line or Acm line or below, and, when the above steel is then subjected to normalizing treatment, that is, the treatment at a temp. higher, in general, than the A3 line or Acm line, a carburizing phenomenon is produced in the surface-layer part, and as a result, the C content after normalizing treatment is estimated to be unchanged both in the surface-layer part and in the inner part because this carburizing is compensated with the above decarburizing.

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