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公开(公告)号：US20110284133A1
公开(公告)日：2011-11-24
申请号：US13116405
申请日：2011-05-26
CPC分类号： C23C8/32 , C21D1/06 , C21D1/18 , C21D9/32 , C21D2211/004 , C21D2221/00 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C23C8/02 , C23C8/22 , C23C8/80
摘要： A carbonitrided part, where a base steel contains, in mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S≦0.05%, and according to need further Mo≦0.50%, with the balance being Fe and impurities, and in the region to a position of effective hardening depth from the surface of a hardened layer of the carbonitrided part, iron nitride particles of ε-Fe3N and/or ζ-Fe2N are dispersed, and retained austenite is decomposed into bainitic ferrite, Fe3C, and α″-Fe16N2 has excellent abrasion strength and high pitting strength, although the base steel is a low-cost one with less content of Mo of an expensive alloy element or without addition of Mo. This carbonitrided part can be produced, for example, by subjecting the base steel part to carburizing in which the base steel part is held in a carburizing atmosphere at 900 to 950° C. and successively to carbonitriding in which the base steel part is held in a carbonitriding atmosphere with a nitrogen potential of 0.2 to 0.6% at 800 to 900° C., subsequently quenching the base steel part, and thereafter tempering the base steel part by heating to a temperature in the range of more than 250° C. to not more than 350° C.
摘要翻译： 碳素氮化部，以质量％计含有C：0.10〜0.35％，Si：0.15〜1.0％，Mn：0.30〜1.0％，Cr：0.40〜2.0％，S＆lt; lE; 0.05％ 需要进一步的Mo＆NE; 0.50％，余量为Fe和杂质，并且在该区域中，从碳氮共渗部分的硬化层的表面到有效硬化深度的位置，Fe 3 N和/或ζ的氮化铁颗粒 -Fe2N分散，残留奥氏体分解为贝氏体铁素体，Fe3C，α“-Fe16N2具有优异的耐磨强度和较高的点蚀强度，虽然基础钢是价格昂贵的合金元素的Mo含量低的低成本 或不添加Mo。该碳氮共渗部分可以例如通过将基体钢部分进行渗碳处理来生产，其中将基体钢部分保持在渗碳气氛中在900〜950℃，然后依次进行碳氮共渗，其中 基础钢部分保持在含氮化的碳氮共渗气氛中 n电位在800〜900℃下为0.2〜0.6％，接着对基体钢部分进行淬火，然后通过加热至250℃以上350℃以下的温度回火钢基部分 C。
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公开(公告)号：US09062364B2
公开(公告)日：2015-06-23
申请号：US13415198
申请日：2012-03-08
IPC分类号： C23C8/32 , C23C8/02 , C21D1/25 , C21D1/74 , C21D7/06 , C21D9/32 , C22C38/02 , C22C38/04 , C22C38/18 , C23C8/22 , C23C8/80
CPC分类号： C23C8/02 , C21D1/25 , C21D1/74 , C21D7/06 , C21D9/32 , C22C38/02 , C22C38/04 , C22C38/18 , C23C8/22 , C23C8/32 , C23C8/80
摘要： A method for producing a carbonitrided member comprising the steps of carburizing a steel part having a composition of, by mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S: 0.05% or less with the balance being Fe and impurities in a carburizing atmosphere of 900 to 950° C. The carburized steel part is carbonitrided in a carbonitriding atmosphere with the temperature of 800 to 900° C. and the nitrogen potential of 0.2 to 0.6%. The carbonitrided steel part is qhenched and then shot peened. The shot peening treatment may be further performed while heating to a temperature not higher than 350° C. or immediately after heating to a temperature not higher than 350° C. After quenching, the shot peening treatment may be further performed after tempering in the temperature range exceeding 250° C. and not higher than 350° C.
摘要翻译： 碳氮共渗构件的制造方法，其特征在于，将以质量％计含有C：0.10〜0.35％，Si：0.15〜1.0％，Mn：0.30〜1.0％，Cr：0.40〜2.0 ％，S：0.05％以下，余量为渗碳气氛中的Fe和杂质为900〜950℃。渗碳钢部分在碳氮共渗气氛中碳氮共混，温度为800〜900℃，氮势 为0.2〜0.6％。 将碳氮共渗钢部分进行复层，然后喷丸硬化。 可以在加热至不高于350℃的温度或加热至不高于350℃的温度之后进一步进行喷丸硬化处理。淬火后，可以在温度回火之后进一步进行喷丸硬化处理 范围超过250℃，不高于350℃
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公开(公告)号：US09771643B2
公开(公告)日：2017-09-26
申请号：US14245229
申请日：2014-04-04
申请人： Akihito Ninomiya , Yoshinari Okada , Takahiro Miyazaki , Yasushi Matsumura , Shinichiro Kato , Tetsuya Shimomura
发明人： Akihito Ninomiya , Yoshinari Okada , Takahiro Miyazaki , Yasushi Matsumura , Shinichiro Kato , Tetsuya Shimomura , Katsuya Yamaguchi
摘要： The invention provides a carburized part which has excellent medium-cycle fatigue strength in particular subjected to surface-hardening treatment by carburization. The invention provides a carburized part including a carburized layer formed by performing carburizing treatment to a steel, the steel including, in terms of % by mass: 0.15% to 0.25% of C, 0.15% or less of Si, 0.4% to 1.1% of Mn, 0.8% to 1.4% of Cr, 0.25% to 0.55% of Mo, 0.015% or less of P, and 0.035% or less of S, with the remainder being Fe and unavoidable impurities, and the steel satisfying the following relation; 0.10≦[Mo]/(10[Si]+[Mn]+[Cr])≦0.40, in which [M] represents a content of element M in terms of % by mass.
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公开(公告)号：US06802915B2
公开(公告)日：2004-10-12
申请号：US10418173
申请日：2003-04-18
申请人： Yoshinari Okada , Haruo Fukuda
发明人： Yoshinari Okada , Haruo Fukuda
IPC分类号： C21D800
CPC分类号： F16G5/16
摘要： A pushing block for the CVT belt has a hyper-eutectoid structure overall and exhibiting a structure in which spheroidal cementite having an area percentage of 0.4% or more are dispersed in a matrix of a martensite.
摘要翻译： 用于CVT带的推动块总体上具有超共析结构，并且具有将面积百分比为0.4％以上的球状渗碳体分散在马氏体的基体中的结构。
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公开(公告)号：US06739995B2
公开(公告)日：2004-05-25
申请号：US10074254
申请日：2002-02-14
申请人： Yoshinari Okada , Haruo Fukuda
发明人： Yoshinari Okada , Haruo Fukuda
IPC分类号： F16G122
CPC分类号： F16G5/16
摘要： A pushing block for the CVT belt has a hyper-eutectoid structure overall and exhibiting a structure in which spheroidal cementite having an area percentage of 0.4% or more are dispersed in a matrix of a martensite.
摘要翻译： 用于CVT带的推动块总体上具有超共析结构，并且具有将面积百分比为0.4％以上的球状渗碳体分散在马氏体的基体中的结构。
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公开(公告)号：US06858099B2
公开(公告)日：2005-02-22
申请号：US10297198
申请日：2002-04-04
申请人： Kazuo Ishii , Yoshinari Okada
发明人： Kazuo Ishii , Yoshinari Okada
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 , C22F8/26
CPC分类号： C22C38/004 , C21D6/001 , C21D6/02 , C21D7/02 , C21D8/005 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/105 , C22C38/12 , C22C38/14 , C23C8/02
摘要： A method for producing a steel material having a high fatigue strength and given a uniform residual stress by a rapid treatment. A marageing steel is subjected to a cold plastic working to have a predetermined dimension, to a solution treatment for 60 minutes or more at a temperature of 750 to 800° C., and to an aging.
摘要翻译： 一种具有高疲劳强度并通过快速处理赋予均匀残余应力的钢材的制造方法。 将磨碎的钢经受冷塑性加工以具有预定尺寸，在750〜800℃的温度下进行60分钟以上的固溶处理，并进行老化。
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