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    STEEL FOR CARBONITRIDED BEARING
    1.
    发明公开
    STEEL FOR CARBONITRIDED BEARING 有权
    用于碳氮化合物轴承的钢

    公开(公告)号：EP3176276A1

    公开(公告)日：2017-06-07

    申请号：EP15826735.1

    申请日：2015-07-29

    申请人： Nippon Steel & Sumitomo Metal Corporation ,  JTEKT Corporation

    发明人： NEISHI, Yutaka ,  SUZUKI, Takahisa ,  KOYAMA, Tatsuya ,  YAMASAKI, Shingo ,  KANETANI, Kohei ,  SADA, Takashi

    IPC分类号： C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/24 ,  C22C38/54 ,  C23C8/32 ,  C23C8/80 ,  F16C33/62

    摘要： Provided is a steel for carbonitrided bearing which excels in hardenability and also excels in toughness, wear resistance, and surface-originated flaking life after quenching and tempering. A steel for carbonitrided bearing of the present embodiment has a chemical composition containing, in mass%, C: 0.22 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). 1.20 0.4 Cr + 0.4 Mo + 4.5 V 2.60 2.7 C + 0.4 Si + Mn + 0.8 Cr + Mo + V > 2.20

    摘要翻译： 本发明提供一种淬透性优异，并且淬火回火后的韧性，耐磨损性，表面起源剥落寿命优异的碳氮共渗轴承用钢。 本实施方式的碳氮共渗轴承用钢的成分组成以质量％计含有C：0.22〜0.45％，Si：0.50％以下，Mn：0.40〜1.50％，P：0.015％以下，S ：不大于0.005％，Cr：0.30〜2.0％，Mo：0.10〜0.35％，V：0.20〜0.40％，Al：0.005〜0.10％，N：0.030％以下，O：0.0015 ％，余量为Fe和杂质，满足式（1）和（2）。 1.20 <0.4Cr + 0.4Mo + 4.5V <2.60 2.7C + 0.4Si + Mn + 0.8Cr + Mo + V> 2.20

    HIGH-CARBON STEEL WIRE HAVING EXCELLENT DRAWABILITY AND FATIGUE PROPERTIES AFTER DRAWING
    8.
    发明公开
    HIGH-CARBON STEEL WIRE HAVING EXCELLENT DRAWABILITY AND FATIGUE PROPERTIES AFTER DRAWING 审中-公开
    含碳量高及卓越的特性与拉疲劳性能的钢丝后捞出

    公开(公告)号：EP2682489A1

    公开(公告)日：2014-01-08

    申请号：EP12751796.9

    申请日：2012-02-28

    申请人： Nippon Steel & Sumitomo Metal Corporation

    发明人： HASEGAWA, Hajime ,  YAMADA, Wataru ,  KIYOSE, Akihito ,  KUDOU, Kouichi ,  YAMASAKI, Shingo

    IPC分类号： C22C38/00 ,  C21C7/04 ,  C21C7/06 ,  C22C38/06 ,  C22C38/54

    CPC分类号： C22C38/34 ,  B21C1/003 ,  C21C7/06 ,  C22C1/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

    摘要： High performance high carbon wire with refined inclusions after wire rolling, extremely low wire breakage rates at the time of drawing even in tough applications, and excellent in fatigue characteristics after wire drawing, characterized by having a predetermined composition of ingredients and in that the number ratio of inclusions satisfying (%SiO 2 )=40 to 95%, (%can)=0.5 to 30%, (%Al 2 O 3 )=0.5 to 30%, (%MgO)=0.5 to 20%, and (%MnO)=0.5 to 10% and further satisfying (%Na)=0.2 to 7% and (%F)=0.17 to 8% (below, referred to as "inclusions covered due to composition") in the oxide-based nonmetallic inclusions of a short axis of 0.5 µm or more, a long axis of 1.0 µm or more, and a circle equivalent diameter (area converted to diameter) of 1 µm or more which are seen in the L direction cross-section of the wire (below, referred to as "inclusions covered due to size"), that is, the number of inclusions covered due to composition/number of inclusions covered due to size×100, is 80% or more.

    摘要翻译： 高性能高碳金属丝与线材轧制后精制夹杂物，极低的断线率在即使在恶劣的应用绘制的时间，并且具有优异的拉丝后的疲劳特性，通过具有成分的预定组成并在其特点做的数量比 满足（％SiO 2）的夹杂物= 40〜95％，（％能）= 0.5〜30％，（％的Al 2 O 3）= 0.5〜30％，（％的MgO）= 0.5〜20％，和（％ 的MnO）= 0.5〜10％，进一步满足（％的Na）= 0.2〜7％和（％F）= 0:17至8％（下面，通过以被称为在所述基于氧化物的非金属夹杂物 “涵盖由于组合物的夹杂物”） 为0.5微米或更大，1.0微米或更大的长轴线，和当量圆直径的短轴（面积转化为直径）为1微米或更哪个是出现在线材的L方向的横截面（以下 通过向称为“覆盖由于尺寸夹杂物”）所做的是，覆盖由于覆盖由于尺寸×100夹杂物的组成/数夹杂物的数量为80％或米 矿石。