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    Steel bar or wire rod for cold forging and method of producing the same
    2.
    发明授权
    Steel bar or wire rod for cold forging and method of producing the same 有权
    用于冷锻的钢筋或线材及其制造方法

    公开(公告)号：US06866724B2

    公开(公告)日：2005-03-15

    申请号：US10168650

    申请日：2000-12-22

    申请人： Tatsuro Ochi ,  Hideo Kanisawa ,  Ken-ichiro Naito

    发明人： Tatsuro Ochi ,  Hideo Kanisawa ,  Ken-ichiro Naito

    IPC分类号： C21D8/06 ,  C21D1/32 ,  C21D9/52 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/60 ,  C22C38/02

    CPC分类号： C21D9/525 ,  C21D1/32 ,  C21D8/06 ,  C21D2211/002 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22

    摘要： A bar or wire product for use in cold forging, characterized in that it comprises a steel having the chemical composition, in mass %: C: 0.1 to 0.6%, Si: 0.01 to 0.5%, Mn: 0.2 to 1.7%, S: 0.001 to 0.15%, Al: 0.015 to 0.05%, N: 0.003 to 0.025%, P: 0.035% or less, O: 0.003% or less and balance: Fe and inevitable impurities, and it has, in the region from the surface thereof to the depth of the radius thereof×0.15, a structure wherein ferrite accounts for 10 area % or less and the balance is substantially one or more of martensite, bainite and pearlite, and the average hardness in the region from the depth of the radius thereof×0.5 to the center thereof is less than that of the surface layer thereof by 20 or more of HV; and a method for producing the bar or wire product. The bar or wire product is excellent in the ductility after spheroidizing and thus allows the prevention of occurrence of cracks in a steel product during cold forging, which has conventionally been a problem in manufacturing structural parts for a machine by cold forging.

    摘要翻译： 一种用于冷锻的棒材或线材制品，其特征在于它包括质量％：C：0.1至0.6％，Si：0.01至0.5％，Mn：0.2至1.7％的化学成分的钢，S： 0.001〜0.15％，Al：0.015〜0.05％，N：0.003〜0.025％，P：0.035％以下，O：0.003％以下，余量：Fe和不可避免的杂质， 其半径为x0.15的深度，其中铁素体占10面积％以下，余量基本上为马氏体，贝氏体和珠光体的一种以上，从半径方向的区域的平均硬度 其中心部分的中心部分的表面层的厚度小于HV的20以上; 以及用于制造棒材或线材制品的方法。 棒材或线材制品在球化后的延展性优异，因此能够防止在冷锻期间的钢制品中产生裂纹，这在制造冷锻机械的结构部件时一直存在问题。

    Non-tempered steel for mechanical structure
    3.
    发明授权
    Non-tempered steel for mechanical structure 失效
    用于机械结构的非回火钢

    公开(公告)号：US6036790A

    公开(公告)日：2000-03-14

    申请号：US230403

    申请日：1999-01-25

    申请人： Hiromasa Takada ,  Tetsuro Hashiguchi ,  Hideo Kanisawa

    发明人： Hiromasa Takada ,  Tetsuro Hashiguchi ,  Hideo Kanisawa

    IPC分类号： C22C38/00 ,  C22C38/12 ,  C22C38/14 ,  C22C38/28 ,  C22C38/60

    CPC分类号： C22C38/12 ,  C22C38/60

    摘要： The medium carbon, microalloyed forging steel for machine structural use has a small deformation upon fracture in a hot-rolled, hot-forged, or any other hot-worked state, has an inexpensive ferrite-pearlitic microstructure and consists of C: 0.3 to 0.6 wt %, Si: 0.1 to 2.0 wt %, Mn: 0.1 wt % or more and less than 0.4 wt %, P: 0.01 to 0.1 wt %, S: 0.01 to 0.2 wt %, V: more than 0.15 wt % and up to 0.4 wt %, and the balance: Fe and unavoidable impurities, in which the unavoidable impurities include less than 0.005 wt % N. The microalloyed forging steel for machine structural use may further contain Al: 0.005 to 0.05 wt %, one or both of Ti: 0.005 to 0.05 wt % and Nb: 0.05 to 0.2 wt %, and/or one or both of Cr: 0.1 to 0.5 wt % and Mo: 0.1 to 0.5 wt %.

    摘要翻译： PCT No.PCT / JP98 / 02306 Sec。 371日期1999年1月25日 102（e）日期1999年1月25日PCT提交1998年5月26日PCT公布。 出版物WO98 / 54372 日期1998年12月3日机械结构用中碳微合金锻造钢在热轧，热锻或其他热加工状态下的断裂变形小，具有廉价的铁素体 - 珠光体组织，由 C：0.3〜0.6重量％，Si：0.1〜2.0重量％，Mn：0.1重量％以上且小于0.4重量％，P：0.01〜0.1重量％，S：0.01〜0.2重量％，V： 0.15重量％以上0.4重量％以下，余量为不可避免的杂质含有小于0.005重量％N的Fe和不可避免的杂质。机械结构用微合金化锻钢可以进一步含有Al：0.005〜0.05重量％ ，Ti：0.005〜0.05重量％，Nb：0.05〜0.2重量％，Cr：0.1〜0.5重量％，Mo：0.1〜0.5重量％的一个或两个。

    Carburized and quenched member and method for production thereof
    5.
    发明申请
    Carburized and quenched member and method for production thereof 审中-公开
    渗碳淬火件及其制造方法

    公开(公告)号：US20050173026A1

    公开(公告)日：2005-08-11

    申请号：US10473716

    申请日：2002-12-25

    申请人： Takao Taniguchi ,  Kazumasa Tsukamoto ,  Kouji Ohbayashi ,  Tomoki Hanyuda ,  Yutaka Kurebayashi ,  Hideo Kanisawa ,  Seiji Itoh

    发明人： Takao Taniguchi ,  Kazumasa Tsukamoto ,  Kouji Ohbayashi ,  Tomoki Hanyuda ,  Yutaka Kurebayashi ,  Hideo Kanisawa ,  Seiji Itoh

    IPC分类号： C23C8/22 ,  C23C8/80

    CPC分类号： C23C8/22 ,  C23C8/80

    摘要： A carburizing and hardening method enhances strength while sufficiently reducing hardening strain, without increasing the production cost, and a carburized and hardened member produced thereby. The raw material is an alloy steel which contains Fe as a main component, 0.10 to 0.50 wt. % C and 0.50 to 1.50 wt. % Si and having a hardenability J, based on an end quenching test, in a range of 35 to 50 (at 12.5 mm). After the raw material is formed into the desired shape, a carburized layer is formed by carburizing in an oxidation inhibiting atmosphere. After the carburizing, quenching is performed with cooling, uninterrupted by temperature rise, from a pearlite transformation point (A1 point) to a martensite transformation start point (Ms point), and with a severity of quenching H in a range of 0.01 to 0.08 (cm−1).

    摘要翻译： 渗碳硬化方法提高强度，同时充分降低硬化应变，而不增加生产成本，并且由此生产的渗碳硬化构件。 原料是含有Fe作为主要成分的合金钢，0.10〜0.50重量％ ％C和0.50〜1.50wt。 ％Si，并且基于终止淬火试验具有淬透性J，在35〜50（12.5mm）的范围内。 在原料形成所需形状之后，通过在氧化抑制气氛中渗碳形成渗碳层。 渗碳后，从珠光体相变点（A1点）到马氏体相变开始点（Ms点）的冷却不间断地进行淬火淬火，淬火强度H在0.01〜0.08的范围内（ cm -1）。

    Outer race for constant velocity joint, having improved anti-flaking properties and shaft strength, and process for producing the same
    6.
    发明授权
    Outer race for constant velocity joint, having improved anti-flaking properties and shaft strength, and process for producing the same 失效
    用于等速万向节的外圈，具有改进的抗剥落性能和轴强度，以及用于制造它的方法

    公开(公告)号：US06602358B1

    公开(公告)日：2003-08-05

    申请号：US09442490

    申请日：1999-11-18

    申请人： Tatsuro Ochi ,  Hideo Kanisawa ,  Kenichiro Naito ,  Joji Tamura ,  Masayoshi Saga

    发明人： Tatsuro Ochi ,  Hideo Kanisawa ,  Kenichiro Naito ,  Joji Tamura ,  Masayoshi Saga

    IPC分类号： C22C3814

    CPC分类号： F16D3/2237 ,  C21D1/10 ,  C21D9/0068 ,  C21D9/40 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60 ,  F16D2250/00 ,  F16D2300/10 ,  Y02P10/253

    摘要： Disclosed are an outer race for a constant velocity joint, having improved anti-flaking properties and shaft strength, and a process for producing the same. The outer race for a constant velocity joint includes a cup and a serration and comprises by weight carbon: 0.45 to 0.59%, silicon: 0.15 to 0.4%, manganese: 0.15 to 0.45%, sulfur: 0.005 to 0.15%, molybdenum: 0.1 to 0.35%, boron: 0.0005 to 0.005%, aluminum: 0.015 to 0.05%, and titanium: 0.015 to 0.03%, the proportion of the effective case depth in track grooves of the cup being 0.25 to 0.45 in terms of the ratio of the effective case depth t to the wall thickness of the cup w, t/w, the proportion of the effective case depth of the involute serration in its end being 0.20 to 0.50 in terms of the ratio of the effective case depth t to the radius r, t/r. The involute serration in its end preferably has a former austenite grain size of not less than 8 in terms of the grain size number specified in JIS (Japanese Industrial Standards).

    摘要翻译： 公开了一种用于等速万向节的外圈，具有改进的抗剥离性能和轴强度，以及制造该等离子体的方法。 用于等速万向节的外圈包括一个杯子和一个锯齿，并且包括重量百分比：0.45至0.59％，硅：0.15至0.4％，锰：0.15至0.45％，硫：0.005至0.15％，钼：0.1至 0.35％，硼：0.0005〜0.005％，铝：0.015〜0.05％，钛：0.015〜0.03％，杯的轨道槽的有效壳深度的比例为0.25〜0.45 表壳深度t相对于杯的壁厚w t / w，渐开线锯齿的有效壳体深度的比例在有效壳深度t与半径r之比为0.20至0.50时， t / r。 其渐开线锯齿末优选以JIS（日本工业标准）规定的粒径数以前的奥氏体晶粒尺寸不小于8。

    High strength drive shaft and process for producing the same
    7.
    发明授权
    High strength drive shaft and process for producing the same 失效
    高强度驱动轴及其制造方法

    公开(公告)号：US06383311B1

    公开(公告)日：2002-05-07

    申请号：US09442506

    申请日：1999-11-18

    申请人： Tatsuro Ochi ,  Hideo Kanisawa ,  Kenichiro Naito ,  Joji Tamura ,  Masayoshi Saga

    发明人： Tatsuro Ochi ,  Hideo Kanisawa ,  Kenichiro Naito ,  Joji Tamura ,  Masayoshi Saga

    IPC分类号： C22C3814

    CPC分类号： C21D9/28 ,  C21D1/10 ,  C22C38/22 ,  C22C38/28 ,  C22C38/60 ,  Y02P10/253

    摘要： Disclosed are a high strength drive shaft and a process for producing the same. The high strength drive shaft comprises as a steel material, by weight, carbon: 0.48 to 0.58%, silicon: 0.01 to 0.15%, manganese: 0.35 to 0.75%, sulfur: 0.005 to 0.15%, molybdenum: 0.1 to 0.35%, boron 0.0005 to 0.005%, aluminum: 0.015 to 0.05%, and titanium: 0.02 to 0.08%, the proportion of the effective case depth of an involute serration in its end of the drive shaft being 0.3 to 0.7 in terms of the ratio of the effective case depth t to the radius r, t/r. The involute serration in its end preferably has a former austenite grain size of not less than 8 in terms of the grain size number specified in JIS (Japanese Industrial Standards). A steel comprising the above constituents and having a hardness of 85 to 95 HRB is machined and form rolled into a shaft, and the shaft is induction hardened and then tempered at 120 to 200° C. to produce the high strength drive shaft.

    摘要翻译： 公开了一种高强度驱动轴及其制造方法。 高强度驱动轴包括碳钢，重量比为0.48〜0.58％，硅：0.01〜0.15％，锰：0.35〜0.75％，硫：0.005〜0.15％，钼：0.1〜0.35％，硼 0.0005〜0.005％，铝：0.015〜0.05％，钛：0.02〜0.08％，驱动轴端部的渐开线锯齿的有效壳深度的比例为0.3〜0.7 情况深度t到半径r，t / r。 其渐开线锯齿末优选以JIS（日本工业标准）规定的粒径数以前的奥氏体晶粒尺寸不小于8。 将包含上述成分并且具有85至95HRC的硬度的钢加工并卷成轴，并将该轴进行感应淬火，然后在120至200℃下回火以产生高强度驱动轴。

    Case-hardening steel superior in tooth surface fatigue strength, gear using the same, and method of production of the same
    10.
    发明申请
    Case-hardening steel superior in tooth surface fatigue strength, gear using the same, and method of production of the same 审中-公开
    表面硬化钢具有优异的齿面疲劳强度，使用齿轮的齿轮及其制造方法

    公开(公告)号：US20060137766A1

    公开(公告)日：2006-06-29

    申请号：US11319871

    申请日：2005-12-27

    申请人： Shuji Kozawa ,  Tatsuro Ochi ,  Hideo Kanisawa ,  Tomoko Serikawa ,  Koki Mizuno

    发明人： Shuji Kozawa ,  Tatsuro Ochi ,  Hideo Kanisawa ,  Tomoko Serikawa ,  Koki Mizuno

    IPC分类号： C22C38/22 ,  C22C38/24 ,  C23C8/22 ,  C23C8/32

    CPC分类号： C23C8/22 ,  C23C8/32

    摘要： The present invention provides case-hardening steel superior in tooth surface fatigue strength and a gear using the same used for parts of automobiles, construction machines, industrial machines, etc., that is case-hardening steel superior in tooth surface fatigue strength containing, by wt %, C: 0.1 to 0.3%, Si: 1.0 to 2.0%, Mn: 0.3 to 2.0%, S: 0.005 to 0.05%, Cr: 1.0 to 2.6%, Mo: 0.8 to 4.0%, V: 0.1 to 0.3%, Al: 0.001 to 0.2%, and N: 0.003 to 0.03%, limiting P to 0.03% or less, and having as a balance iron and unavoidable impurities, and satisfies the following expression, 31Si (%)+15Mn (%)+23Cr (%)+26Mo (%)+100V (%) is 100 or more, and a gear comprised of case-hardening steel and having an X-ray diffraction half width at a depth of 50 mm from the surface of the gear of 6.4 degrees or more.

    摘要翻译： 本发明提供了表面疲劳强度优异的表面硬化钢和使用其用于汽车，工程机械，工业机械等部件的齿轮，其是表面硬化钢，其表面疲劳强度优异，包括由 重量％，C：0.1〜0.3％，Si：1.0〜2.0％，Mn：0.3〜2.0％，S：0.005〜0.05％，Cr：1.0〜2.6％，Mo：0.8〜4.0％，V：0.1〜 ％，Al：0.001〜0.2％，N：0.003〜0.03％，将P限制在0.03％以下，余量为铁和不可避免的杂质，满足下式：31Si（％）+ 15Mn（％） + 23Cr（％）+ 26Mo（％）+ 100V（％）为100以上，由外壳硬化钢构成的齿轮与齿轮表面的距离为50mm的X射线衍射半值宽度 为6.4度以上。