STEEL FOR NITRIDING AND NITRIDED PART
    1.
    发明申请
    STEEL FOR NITRIDING AND NITRIDED PART 有权
    用于硝化和硝化部分的钢

    公开(公告)号:US20130087250A1

    公开(公告)日:2013-04-11

    申请号:US13702285

    申请日:2011-11-17

    摘要: The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than 0.19%; V: over 0.2% to 1.0%; Mo: 0% to 0.54%; N: 0.001% to 0.01%; P limited to not more than 0.05%; S limited to not less than 0.2%; and a balance including Fe and inevitable impurities, the composition satisfying 2≦[V]/[C]≦10, where [V] is an amount of V by mass % and [C] is an amount of C by mass %, in which the steel for nitriding has a microstructure containing bainite of 50% or more in terms of an area percentage.

    摘要翻译: 本发明提供一种氮化组成的钢,其含有质量%:C:0.10〜0.20% Si:0.01〜0.7% Mn:0.2〜2.0% Cr:0.2〜2.5% Al:0.01%〜小于0.19%; V:超过0.2%至1.0%; Mo:0〜0.54% N:0.001〜0.01% P限制在不超过0.05%; S限制在0.2%以上; 余量包括Fe和不可避免的杂质,组成满足2≦̸ [V] / [C]≦̸ 10,其中[V]为质量%V,[C]为质量% 其中用于氮化的钢具有以面积百分比计含有贝氏体为50%以上的微结构。

    Steel for nitriding and nitrided part
    2.
    发明授权
    Steel for nitriding and nitrided part 有权
    用于氮化和氮化部分的钢

    公开(公告)号:US08876988B2

    公开(公告)日:2014-11-04

    申请号:US13702285

    申请日:2011-11-17

    摘要: The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than 0.19%; V: over 0.2% to 1.0%; Mo: 0% to 0.54%; N: 0.001% to 0.01%; P limited to not more than 0.05%; S limited to not less than 0.2%; and a balance including Fe and inevitable impurities, the composition satisfying 2≦[V]/[C]≦10, where [V] is an amount of V by mass % and [C] is an amount of C by mass %, in which the steel for nitriding has a microstructure containing bainite of 50% or more in terms of an area percentage.

    摘要翻译: 本发明提供一种氮化组成的钢,其含有质量%:C:0.10〜0.20% Si:0.01〜0.7% Mn:0.2〜2.0% Cr:0.2〜2.5% Al:0.01%〜小于0.19%; V:超过0.2%至1.0%; Mo:0〜0.54% N:0.001〜0.01% P限制在不超过0.05%; S限制在0.2%以上; 余量包括Fe和不可避免的杂质,组成满足2≦̸ [V] / [C]≦̸ 10,其中[V]为质量%V,[C]为质量% 其中用于氮化的钢具有以面积百分比计含有贝氏体为50%以上的微结构。

    DRAWN HEAT TREATED STEEL WIRE FOR HIGH STRENGTH SPRING USE AND PRE-DRAWN STEEL WIRE FOR HIGH STRENGTH SPRING USE
    3.
    发明申请
    DRAWN HEAT TREATED STEEL WIRE FOR HIGH STRENGTH SPRING USE AND PRE-DRAWN STEEL WIRE FOR HIGH STRENGTH SPRING USE 审中-公开
    用于高强度弹簧使用的热处理钢丝和用于高强度弹簧使用的预制钢丝

    公开(公告)号:US20120291927A1

    公开(公告)日:2012-11-22

    申请号:US13574175

    申请日:2011-07-05

    摘要: Drawn heat treated steel wire for high strength spring use is provided containing, by mass %, C: 0.67% to less than 0.9%, Si: 2.0 to 3.5%, Mn: 0.5 to 1.2%, Cr: 1.3 to 2.5%, N: 0.003 to 0.007%, and Al: 0.0005% to 0.003%, having Si and Cr satisfying the following formula: 0.3%≦Si−Cr≦1.2%, and having a balance of iron and unavoidable impurities, having as impurities, P: 0.025% or less and S: 0.025% or less, furthermore having a circle equivalent diameter of undissolved spherical carbides of less than 0.2 μm, further having, as a metal structure, at least residual austenite in a volume rate of over 6% to 15%, having a prior austenite grain size number of #10 or more, and having a circle equivalent diameter of undissolved spherical carbides of less than 0.2 μm.

    摘要翻译: 提供了用于高强度弹簧使用的拉丝热处理钢丝,以质量%计含有C:0.67%至小于0.9%,Si:2.0-3.5%,Mn:0.5-1.2%,Cr:1.3-2.5%,N :0.003〜0.007%,Al:0.0005〜0.003%,Si和Cr满足下​​式:0.3%≦̸ Si-Cr≦̸ 1.2%,余量为铁和不可避免的杂质,杂质为P :0.025%以下,S:0.025%以下,还具有小于0.2μm的未溶解球形碳化物的当量圆直径,作为金属结构,至少残留奥氏体的体积率超过6%以上〜 15%,具有#10以上的前奥氏体晶粒数,并且具有小于0.2μm的未溶解球形碳化物的圆当量直径。

    High Strength Spring Steel Wire and High Strength Spring and Methods of Production of the Same
    5.
    发明申请
    High Strength Spring Steel Wire and High Strength Spring and Methods of Production of the Same 审中-公开
    高强度弹簧钢丝和高强度弹簧及其生产方法

    公开(公告)号:US20090020195A1

    公开(公告)日:2009-01-22

    申请号:US12224185

    申请日:2008-01-07

    IPC分类号: C21D9/02 C22C38/00

    摘要: The present invention provides high strength spring and high strength spring steel wire superior in corrosion fatigue characteristics and methods of production of the same, that is, a high strength spring steel wire and high strength spring containing, by mass %, C: 0.35 to 0.50%, Si: 1.00 to 3.00%, and Mn: 0.10 to 2.00%, restricting P to 0.015% or less and S to 0.015% or less, having a balance of Fe and unavoidable impurities, and, when raising the temperature in the range from 50° C. to 600° C. by 0.25° C./s and measuring the differential scanning calories, having the only peak of the exothermic reaction present at 450° C. or more. A method of production of high strength spring characterized by tempering under conditions where the tempering temperature T[K], tempering time t[s], and content Si % [mass %] of Si satisfy the following: 16000≦(T−40×[Si %])×(31.7+log t)≦23000.

    摘要翻译: 本发明提供了一种耐腐蚀疲劳特性优异的高强度弹簧和高强度弹簧钢丝及其制造方法,即高强度弹簧钢丝和高强度弹簧,以质量%计含有C:0.35〜0.50 %,Si:1.00〜3.00%,Mn:0.10〜2.00%,将P限制在0.015%以下,S:0.015%以下,余量为Fe和不可避免的杂质,当将温度升高到 从50℃至600℃,0.25℃/秒,并测量差示扫描卡路里,其中放热反应的唯一峰值为450℃或更高。 一种高强度弹簧的制造方法,其特征在于,在回火温度T [K],回火时间t [s]以及Si的含量Si%[质量%]条件下回火的条件满足以下条件:<?内联式 description =“In-line Formulas”end =“lead”?> 16000 <=(T-40x [Si%])x(31.7 + log t)<= 23000 <?in-line-formula description = 行公式“end =”tail“?>