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1. 发明申请

US20120060979A1 CARBURIZED STEEL PART HAVING EXCELLENT LOW CYCLE BENDING FATIGUE STRENGTH 审中-公开
标题翻译：具有优异的低周期弯曲疲劳强度的加固钢部件
公开(公告)号：US20120060979A1
公开(公告)日：2012-03-15
申请号：US13139000
申请日：2010-11-11
申请人： Shuji Kozawa , Manabu Kubota , Osamu Kada , Motohiro Nishikawa , Takashi Tanaka , Norimasa Tsunekage
发明人： Shuji Kozawa , Manabu Kubota , Osamu Kada , Motohiro Nishikawa , Takashi Tanaka , Norimasa Tsunekage
IPC分类号： C22C38/02 , C22C38/06 , C22C38/08 , C22C38/14 , C22C38/12 , C22C38/16 , C22C38/04 , C22C38/38
CPC分类号： C21D1/68 , C21D1/06 , C21D9/32 , C21D2211/004 , C21D2211/008 , C22C38/002 , C23C8/22
摘要： A carburized steel part having excellent low cycle bending fatigue strength which is comprised of a steel material which contains, by mass %, C: 0.1 to 0.6%, Si: 0.01 to 1.5%, Mn: 0.3 to 2.0, P: 0.02% or less, S: 0.001 to 0.15%, N: 0.001 to 0.03%, Al: 0.001 to 0.06%, and O: 0.005% or less and has a balance of substantially iron and unavoidable impurities and which is carburized and quenched, and then tempered, which steel part has a surface hardness of HV550 to HV800 and a core hardness of HV400 to HV500.
摘要翻译：一种具有优异的低循环弯曲疲劳强度的渗碳钢部件，其由以质量％计含有C：0.1〜0.6％，Si：0.01〜1.5％，Mn：0.3〜2.0，P：0.02％的钢材构成， S：0.001〜0.15％，N：0.001〜0.03％，Al：0.001〜0.06％，O：0.005％以下，余量基本上为铁和不可避免的杂质，经渗碳淬火，然后回火该钢部分的表面硬度为HV550〜HV800，核心硬度为HV400〜HV500。

2. 发明授权

US06270596B1 Process for producing high strength shaft 失效
标题翻译：高强度轴的生产工艺
公开(公告)号：US06270596B1
公开(公告)日：2001-08-07
申请号：US09418829
申请日：1999-10-15
申请人： Makoto Iguchi , Motohiro Nishikawa , Masayoshi Saga
发明人： Makoto Iguchi , Motohiro Nishikawa , Masayoshi Saga
IPC分类号： C22C3800
CPC分类号： C22C38/32 , C21D1/10 , C21D8/00 , C21D9/28 , C22C38/22 , C22C38/28 , Y02P10/253
摘要： Disclosed is a process for producing a shaft having improved strength without sacrificing machinability and cold workability. The process for producing a high strength shaft comprises the steps of: rolling or forging an alloy at a heating temperature of Ac3 to 105° C. with a reduction in area of not less than 30%, the alloy comprising by weight carbon: 0.47 to 0.55%, silicon: 0.03 to 0.15%, manganese: 0.20 to 0.50%, molybdenum: 0.08 to 0.30%, sulfur: 0.005 to 0.035%, boron: 0.0005 to 0.005%, titanium: 0.05 to 0.20%, nitrogen: not more than 0.01%, aluminum: 0.005 to 0.05%, and manganese+molybdenum: 0.45 to 0.70% with the balance consisting of iron and unavoidable impurities, thereby producing a steel product having a hardness after rolling or forging of 85 to 97 HRB; and induction hardening the steel product to obtain a shaft, as shown in FIG. 1, having a hardening depth ratio (distance from the surface to a position of 500 HV/radius of component) of not less than 0.25 and an austenitic grain size number as specified in JIS G 0551 of not less than 7.
摘要翻译：公开了一种在不牺牲机械加工性和冷加工性的情况下提高强度的轴的制造方法。制造高强度轴的方法包括以下步骤：在Ac 3〜105℃的加热温度下将合金轧制或锻造，面积减少为30％以上，所述合金的重量比为0.47〜 0.55％，硅：0.03〜0.15％，锰：0.20〜0.50％，钼：0.08〜0.30％，硫：0.005〜0.035％，硼：0.0005〜0.005％，钛：0.05〜0.20％ 0.01％，铝：0.005〜0.05％，锰+钼：0.45〜0.70％，余量由铁和不可避免的杂质构成，制成轧制或锻造后的硬度为85〜97HRC的钢制品; 并对钢制品进行感应淬火以获得轴，如图1所示。如图1所示，具有不小于0.25的硬化深度比（从表面到500 HV /成分半径的距离）不小于7的奥氏体晶粒尺寸数。

3. 发明授权

US06123785A Product and process for producing constant velocity joint having improved cold workability and strength 失效
标题翻译：具有提高冷加工性和强度的等速万向节接头的产品和工艺
公开(公告)号：US06123785A
公开(公告)日：2000-09-26
申请号：US418577
申请日：1999-10-15
申请人： Makoto Iguchi , Motohiro Nishikawa , Masayoshi Saga
发明人： Makoto Iguchi , Motohiro Nishikawa , Masayoshi Saga
IPC分类号： C21D1/10 , C21D1/32 , C21D9/00 , C22C38/22 , C22C38/28 , C22C38/32 , C21D8/00 , C22C38/50
CPC分类号： C22C38/32 , C21D1/32 , C21D9/0068 , C22C38/22 , C22C38/28 , C21D1/10 , Y02P10/253 , Y10S148/906
摘要： The process for producing a constant velocity joint having improved cold workability, rolling fatigue life, and torsional strength comprises the steps of: rolling or forging an alloy at a heating temperature of Ac.sub.3 to 1000.degree. C. with a reduction in area of not less than 30%, said alloy comprising by weight carbon: 0.52 to 0.60%, silicon: 0.03 to 0.15%, manganese: 0.10 to 0.40%, chromium: 0.05 to 0.30%, molybdenum: 0.10 to 0.30%, sulfur: 0.003 to 0.020%, boron: 0.0005 to 0.005%, titanium: 0.02 to 0.05%, nitrogen: not more than 0.01%, aluminum: 0.005 to 0.05%, and manganese+chromium+molybdenum: 0.35 to 0.80% with the balance consisting of iron and unavoidable impurities; spheroidizing the rolled or forged alloy in such a manner that, after heating to Ac.sub.1 to 770.degree. C., slow cooling is performed from 730.degree. C. to 700.degree. C. at a rate of not more than 15.degree. C./hr, thereby producing a steel product having a hardness of 68 to 78 HRB after spheroidizing; and induction hardening the steel product to obtain a constant velocity joint having a surface hardness of not less than 60 HRC.
摘要翻译：用于制造具有改善的冷加工性，滚动疲劳寿命和扭转强度的等速万向节的方法包括以下步骤：在Ac 3〜1000℃的加热温度下轧制或锻造合金，面积减小不小于 30％，所述合金的重量为：0.52〜0.60％，硅：0.03〜0.15％，锰：0.10〜0.40％，铬：0.05〜0.30％，钼：0.10〜0.30％，硫：0.003〜0.020％硼：0.0005〜0.005％，钛：0.02〜0.05％，氮：不大于0.01％，铝：0.005〜0.05％，锰+铬+钼：0.35〜0.80％，余量由铁和不可避免的杂质构成; 对轧制或锻造合金进行球化，使得在加热至Ac1至770℃后，以不超过15℃/小时的速度从730℃至700℃进行缓慢冷却，从而制造球化后硬度为68〜78HRC的钢产品; 并对钢制品进行感应淬火，得到表面硬度不低于60HRC的等速万向节。

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