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公开(公告)号：EP2762587A1
公开(公告)日：2014-08-06
申请号：EP12835952.8
申请日：2012-09-27
发明人： HONJO, Minoru , UWAI, Kiyoshi , MITAO, Shinji
CPC分类号： C21D8/005 , B22D7/00 , C21D1/26 , C21D7/13 , C21D9/0081 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , F16C33/121
摘要： A method is provided with which a bearing steel, even when obtained from an ingot, is made to have a segregation part reduced in the degree of segregation and maximum inclusion diameter. The ingot contains 0.56-0.70 mass% C, 0.15-0.50 mass%, excluding 0.50 mass%, Si, 0.60-1.50 mass% Mn, 0.50-1.10 mass% Cr, 0.05-0.5 mass% Mo, up to 0.025 mass% P, up to 0.025 mass% S, 0.005-0.500 mass% Al, up to 0.0015 mass% O, and 0.0030-0.015 mass% N, with the remainder comprising Fe and incidental impurities. The ingot has a degree of segregation of 2.8 or less and a predicted value of the maximum diameter of inclusions present in 30,000 mm 2 of the ingot, as calculated by extreme value statistics, of 60 µm or less.
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公开(公告)号：EP2762587B1
公开(公告)日：2016-07-13
申请号：EP12835952.8
申请日：2012-09-27
发明人： HONJO, Minoru , UWAI, Kiyoshi , MITAO, Shinji
CPC分类号： C21D8/005 , B22D7/00 , C21D1/26 , C21D7/13 , C21D9/0081 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , F16C33/121
摘要： A method is provided with which a bearing steel, even when obtained from an ingot, is made to have a segregation part reduced in the degree of segregation and maximum inclusion diameter. The ingot contains 0.56-0.70 mass% C, 0.15-0.50 mass%, excluding 0.50 mass%, Si, 0.60-1.50 mass% Mn, 0.50-1.10 mass% Cr, 0.05-0.5 mass% Mo, up to 0.025 mass% P, up to 0.025 mass% S, 0.005-0.500 mass% Al, up to 0.0015 mass% O, and 0.0030-0.015 mass% N, with the remainder comprising Fe and incidental impurities. The ingot has a degree of segregation of 2.8 or less and a predicted value of the maximum diameter of inclusions present in 30,000 mm 2 of the ingot, as calculated by extreme value statistics, of 60 µm or less.
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公开(公告)号：EP3045556A1
公开(公告)日：2016-07-20
申请号：EP14844852.5
申请日：2014-09-11
发明人： HONJO, Minoru , UWAI, Kiyoshi , ENDO, Shigeru , YAMASHITA, Katsutoshi , TSURU, Koei , FUJIE, Keiichi , TANGE, Akira
CPC分类号： C22C38/60 , C21D1/18 , C21D1/25 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/06 , C21D8/065 , C21D9/02 , C21D9/525 , C22C38/00 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , F16F1/02 , F16F1/021
摘要： Provided is high strength steel for springs that, compared to conventional high strength steel for springs, has excellent decarburization resistance and scale exfoliation property, by optimization of the added amounts of C, Si, Mn, and Cr as well as of Sb and Sn. The steel for springs contains C: more than 0.45 mass% and less than 0.65 mass%, Si: 0.15 mass% or more and 0.70 mass% or less, Mn: 0.10 mass% or more and 1.00 mass% or less, Cr: 0.20 mass% or more and 1.50 mass% or less, P: 0.025 mass% or less, S: 0.025 mass% or less, O: 0.0015 mass% or less, Sb: 0.010 mass% or more and less than 0.030 mass%, and Sn: 0.010 mass% or more and 0.030 mass% or less, under predetermined conditions.
摘要翻译： 通过优化C，Si，Mn和Cr以及Sb和Sn的添加量，与传统的用于弹簧的高强度钢相比，提供了用于弹簧的高强度钢具有优异的抗脱碳性和氧化皮剥离性。 弹簧用钢含有C：超过0.45质量％且小于0.65质量％，Si：0.15质量％以上且0.70质量％以下，Mn：0.10质量％以上且1.00质量％以下，Cr：0.20 质量％以上且1.50质量％以下，P：0.025质量％以下，S：0.025质量％以下，O：0.0015质量％以下，Sb：0.010质量％以上且小于0.030质量％， Sn：规定条件下为0.010质量％以上且0.030质量％以下。
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4.发明公开
公开(公告)号：EP2647733A1
公开(公告)日：2013-10-09
申请号：EP11844108.8
申请日：2011-11-29
发明人： HIRAI, Yasumasa , UWAI, Kiyoshi
CPC分类号： C22C38/60 , C21D1/32 , C21D6/002 , C21D9/40 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/58 , F16C33/62
摘要： Provided is bearing steel excellent in workability after spheroidizing-annealing and in hydrogen fatigue resistance property after quenching and tempering. The bearing steel has a chemical composition containing, by mass%: 0.85 % to 1.10 % C; 0.30 % to 0.80 % Si; 0.90 % to 2.00 % Mn; 0.025 % or less P; 0.02 % or less S; 0.05 % or less Al; 1.8 % to 2.5 % Cr; 0.15 % to 0.4 % Mo; 0.0080 % or less N; and 0.0020 % or less O, which further contains more than 0.0015 % to 0.0050 % or less Sb, with the balance being Fe and incidental impurities, to thereby effectively suppress the generation of WEA even in environment where hydrogen penetrates into the steel, so as to improve the rolling contact fatigue life and also the workability such as cuttability and forgeability of the material.
摘要翻译： 提供球化退火之后和在氢耐疲劳特性淬火回火后为轴承钢加工性优异。 轴承钢的化学组成含有，以质量％计：0.85％〜1.10％C; 0.30％〜0.80％与Si; 0.90％至2：00％的Mn; 0.025％或更少的P; 0.02％或更少的S; 0.05％或以下的Al; 1.8％至2.5％的Cr; 0.15％〜0.4％与Mo; 0.0080％或更少的N; 和0.0020％或更低的O，其中，还含有大于0.0015％至0.0050％或更少的Sb，其余是Fe和不可避免的杂质，从而有效地抑制风力涡轮机的发电，即使在环境中的氢侵入钢，从而 以改善滚动疲劳寿命，并因此加工性：如可切割性和锻造该材料的能力。
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公开(公告)号：EP2816128B1
公开(公告)日：2019-02-06
申请号：EP13748467.1
申请日：2013-02-15
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6.发明授权
公开(公告)号：EP2647734B1
公开(公告)日：2015-05-27
申请号：EP11845154.1
申请日：2011-11-24
发明人： HIRAI, Yasumasa , UWAI, Kiyoshi
IPC分类号： C22C38/00 , C22C38/02 , C22C38/06 , C22C38/04 , C22C38/22 , C21D1/32 , C21D9/40 , C21D8/00 , C21D9/18 , C21D1/18 , F16C33/62 , F16C33/30
CPC分类号： C22C38/44 , C21D1/18 , C21D1/32 , C21D8/005 , C21D9/40 , C22C1/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/50 , C22C38/54 , C22C38/58 , F16C33/30 , F16C33/62 , F16C2204/66 , F16C2204/70
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7.发明公开
公开(公告)号：EP2647734A1
公开(公告)日：2013-10-09
申请号：EP11845154.1
申请日：2011-11-24
发明人： HIRAI, Yasumasa , UWAI, Kiyoshi
CPC分类号： C22C38/44 , C21D1/18 , C21D1/32 , C21D8/005 , C21D9/40 , C22C1/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/50 , C22C38/54 , C22C38/58 , F16C33/30 , F16C33/62 , F16C2204/66 , F16C2204/70
摘要： Provided is bearing steel excellent in post spheroidizing-annealing workability and in post quenching-tempering hydrogen fatigue resistance property. The bearing steel has a chemical composition containing, by mass%: 0.85 % to 1.10 % C; 0.30 % to 0.80 % Si; 0.90 % to 2.00 % Mn; 0.025 % or less P; 0.02 % or less S; 0.05 % or less Al; 1.8 % to 2.5 % Cr; 0.15 % to 0.4 % Mo; 0.0080 % or less N; 0.0020 % or less O; and the balance being Fe and incidental impurities, to thereby effectively suppress the generation of WEA even in environment where hydrogen penetrates into the steel, so as to improve the rolling contact fatigue life and also the workability such as cuttability and forgeability of the material.
摘要翻译： 提供为轴承钢具有优异的球化后退火加工性和在淬火后的回火氢耐疲劳特性。 轴承钢的化学组成含有，以质量％计：0.85％〜1.10％C; 0.30％〜0.80％与Si; 0.90％至2：00％的Mn; 0.025％或更少的P; 0.02％或更少的S; 0.05％或以下的Al; 1.8％至2.5％的Cr; 0.15％〜0.4％与Mo; 0.0080％或更少的N; 0.0020％以下O; 和余量为Fe和不可避免的杂质，从而有效地抑制风力涡轮机的发电，即使在环境中的氢侵入钢，从而改善滚动疲劳寿命，并因此加工性：如可切割性和锻造该材料的能力。
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8.发明授权
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9.发明公开STEEL FOR NITROCARBURIZING AND NITRO CARBURIZED COMPONENT, AND METHODS FOR PRODUCING SAID STEEL FOR NITRO CARBURIZING AND SAID NITROCARBURIZED COMPONENT 审中-公开钢和生产该钢碳氮共渗氮碳共渗碳氮共渗部件及其方法和上述构成氮碳共渗
公开(公告)号：EP2878695A1
公开(公告)日：2015-06-03
申请号：EP13823507.2
申请日：2013-07-22
发明人： OMORI, Yasuhiro , UWAI, Kiyoshi , MITAO, Shinji , IWAMOTO, Takashi , ANDO, Keisuke , TOMITA, Kunikazu
CPC分类号： C23C8/32 , C21D1/06 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/005 , C21D8/06 , C21D8/065 , C21D9/32 , C21D2211/002 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C22C38/60 , C23C8/04
摘要： The present invention provides a steel for nitrocarburizing having excellent mechanical workability before nitrocarburizing, and showing excellent fatigue properties after nitrocarburizing, which is suitable for applying in mechanical structural components for automobiles etc. prepared by adjusting the composition so that it contains in mass%, C: 0.01 % or more and less than 0.10 %, Si: 1.0 % or less, Mn: 0.5 % to 3.0 %, P: 0.02 % or less, S: 0.06 % or less, Cr: 0.3 % to 3.0 %, Mo: 0.005 % to 0.4 %, V: 0.02 % to 0.5 %, Nb: 0.003 % to 0.15 %, Al: 0.005 % to 0.2 %, and Sb: 0.0005 % to 0.02 %, and the balance including Fe and incidental impurities, and setting the area ratio of bainite phase to the whole microstructure to more than 50 %.
摘要翻译： 本发明提供了用于具有软氮化前优异的机械加工性，并示出软氮化后优良的疲劳特性软氮化的钢，所有这些都在用于汽车等通过调整该组合物制备的机械结构部件施加是合适的，这样做是含有以质量％计，C ：0.01％以上且小于12：10％以下，Si：1.0％以下，Mn：0.5％〜3.0％，P：0.02％以下，S：0.06％以下，Cr：0.3％〜3.0％以下，Mo： 0.005％至0.4％，V：0.02％〜0.5％以下，Nb：0.003％至0.15％以下，Al：0.005％至0.2％，及Sb：0.0005％〜设定12：02％，其余包括Fe及不可避免的杂质，并且 贝氏体相的整个显微组织的面积率超过50％。
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公开(公告)号：EP2816130A1
公开(公告)日：2014-12-24
申请号：EP13749053.8
申请日：2013-02-14
发明人： HONJO, Minoru , UWAI, Kiyoshi , MITAO, Shinji
CPC分类号： C22C38/60 , C21D6/008 , C21D8/06 , C21D9/02 , C22C38/002 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , F16F1/021
摘要： The present invention provides a high strength spring steel that suppresses ferrite decarburization in a surface layer of a predetermined wire rod manufactured by hot rolling therefrom and possesses excellent decarburization resistance, as compared to conventional high strength spring steel, by optimizing the amount of C, Si, Mn, Cr, Mo and Sb to be added.
The spring steel contains, under a certain relationship: 0.35 mass% ≤ C ≤ 0.45 mass%; 1.75 mass% ≤ Si ≤ 2.40 mass%; 0.1 mass% ≤ Mn ≤ 1.0 mass%; 0.01 mass% ≤ Cr摘要翻译： 本发明提供一种高强度弹簧钢，该高强度弹簧钢与现有的高强度弹簧钢相比，能够抑制通过热轧而制造的规定的线材的表层的铁素体脱碳，并且与以往的高强度弹簧钢相比具有优异的耐脱碳性， ，添加Mn，Cr，Mo和Sb。 弹簧钢在一定的关系下含有0.35质量％≤C≤0.45质量％ 1.75质量％≤Si≤2.4质量％; 0.1质量％≤Mn≤1.0质量％; 0.01质量％≤Cr<0.50质量％; 0.01质量％≤Mo≤1.00质量％; P≤0.025质量％; S≤0.025质量％; 和O≤0.0015质量％; 以及选自0.035质量％≤Sb≤0.12质量％和0.035质量％≤Nn≤0.20质量％中的至少一种。
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