Piston ring
    10.
    发明公开
    Piston ring 有权
    活塞环

    公开(公告)号:EP2551560A1

    公开(公告)日:2013-01-30

    申请号:EP12006986.9

    申请日:2009-02-25

    IPC分类号: F16J9/26 C22C38/00

    摘要: A piston ring (R) includes: a refined steel including: carbon C in a range of 0.20 % mass to 0.90 % mass, silicon Si in a range of 0.10 % mass to less than 0.60 % mass, manganese Mn in a range of 0.20 % mass to 1.50 % mass, chromium Cr in a range of 0.30 % mass to 2.00 % mass, and iron Fe as balance and unavoidable impurity. A parameter A calculated from the following expression (1) based on contents of the Si, Mn and Cr is 9.0 or less: parameter A = 8.8 Si + 1.6 Mn + 1.7 Cr --- expression (1). A parameter B calculated from the following expression (2) based on contents of the C, Si, Mn and Cr is 10.8 or more: parameter B = 36 C + 4.2 Si + 3.8 Mn + 4.5 Cr --- expression (2), wherein the piston ring (R) has a hardness of 26 HRC or more after a refining including a quench hardening and a tempering, and the piston ring (R) has a thermal conductivity of 36 W/m·K or more after the refining including the quench hardening and the tempering.

    摘要翻译: 活塞环(R)包括精炼钢,该精炼钢包括:0.20质量%至0.90质量%范围内的碳C,0.10质量%至小于0.60质量%范围内的硅Si,0.20范围内的锰Mn 质量%至1.50%质量,0.30%质量至2.00%质量范围内的铬Cr以及余量的铁Fe和不可避免的杂质。 根据Si,Mn和Cr的含量由以下表达式(1)计算的参数A为9.0或更小:参数A = 8.8Si + 1.6Mn + 1.7Cr ......表达式(1)。 根据C,Si,Mn和Cr的含量由以下表达式(2)计算的参数B为10.8或更大:参数B = 36C + 4.2Si + 3.8Mn + 4.5Cr ......表达式(2), 其特征在于,所述活塞环(R)在包含淬火和回火的精炼后的硬度为26HRC以上,所述精炼后的所述活塞环(R)的导热率为36W / m·K以上 淬火和回火。