Steel composition for bearings and method of producing the same
    1.
    发明授权
    Steel composition for bearings and method of producing the same 失效
    轴承用钢组成及其制造方法

    公开(公告)号:US5733388A

    公开(公告)日:1998-03-31

    申请号:US621938

    申请日:1996-03-25

    IPC分类号: C22C38/22 C21D9/40

    CPC分类号: C22C38/22 Y10S148/906

    摘要: Bearing steel materials that are superior in cold workability, machinability, hardenability and rolling contact fatigue life are provided. During the processing of steel materials, the generation of large carbides, that detrimentally affect the rolling contact fatigue life of the steel, is inhibited, thereby obviating the necessity of a heat treatment for dissolving the carbides. The present steel material contains the following alloy elements in percentage by mass: 0.55% to 0.82% of carbon; 0.05% to 0.20% of silicon; 0.50% or less of manganese; 0.90% to 1.30% of chromium; 0.05% to 0.30% of molybdenum; and the remaining percentage substantially of iron. After the spheroidizing annealing of the steel material, the total cross-sectional area rate of carbide is 25% or less.

    摘要翻译: 提供了在冷加工性,机加工性,淬透性和滚动接触疲劳寿命方面优异的轴承钢材料。 在钢材加工过程中,抑制了对钢的滚动疲劳寿命有不利影响的大碳化物的产生,从而消除了碳化物溶解热处理的必要性。 本钢材以质量%计含有以下合金元素:0.55〜0.82% 0.05%〜0.20%的硅; 0.50%以下的锰; 0.90〜1.30%的铬; 0.05〜0.30%的钼; 其余的百分比基本上是铁。 在钢材的球化退火之后,碳化物的总横截面积率为25%以下。

    Bearing component
    2.
    发明授权
    Bearing component 失效
    轴承部件

    公开(公告)号:US5908515A

    公开(公告)日:1999-06-01

    申请号:US666304

    申请日:1996-09-06

    摘要: A bearing component for use in anti-friction bearings as a bearing ring or rolling member is made from a steel comprising 0.6 to 0.8 wt. % of C, 0.05 to 0.25 wt. % of Si, 0.2 to 0.9 wt. % of Mn, 0.4 to 1.2 wt. % of Cr, one or both of 0.10 to 0.30 wt. % of Mo and 0.03 to 0.10 wt. % of V, and the balance Fe and inevitable impurities. The steel as hardened and tempered contains carbide having a maximum particle size of up to 1.5 .mu.m, and the amount of the carbide is 2 to 7% in area ratio. The steel therefore has improved cold workability, providing bearing components of a prolonged rolling fatigue life at a reduced cost.

    摘要翻译: PCT No.PCT / JP94 / 02149 Sec。 371日期1996年9月6日 102(e)日期1996年9月6日PCT 1994年12月20日PCT PCT。 公开号WO95 / 18239 日期1995年7月6日作为轴承圈或滚动体的抗摩擦轴承用轴承部件由含有0.6〜0.8重量% %的C,0.05〜0.25wt。 Si%,0.2〜0.9wt。 Mn的%,0.4〜1.2wt。 Cr的百分比,0.10〜0.30重量%中的一个或两个。 %的Mo和0.03〜0.10wt。 V%,余量为Fe和不可避免的杂质。 硬化和回火的钢含有最大粒度达1.5μm的碳化物,碳化物的面积比为2〜7%。 因此,钢具有改善的冷加工性,从而以降低的成本提供延长的滚动疲劳寿命的轴承部件。

    Bearing material
    5.
    发明授权
    Bearing material 失效
    轴承材料

    公开(公告)号:US5960250A

    公开(公告)日:1999-09-28

    申请号:US930183

    申请日:1997-10-20

    摘要: Bearing materials used for rolling bearings, such as roller bearings and ball bearings, and in particular, a bearing material having an extended rolling contact fatigue life.A bearing material having an extended rolling contact fatigue life comprises: 0.95 to 1.10 mass % of C, 0.15 to 0.70 mass % of Si, 1.15 mass % or less of Mn, 0.90 to 1.60 mass % of Cr and 0.025 mass % or less of P, and further 0.025 mass % or less of S and 0.0012 mass % or less of O as elements forming nonmetal inclusions, and the balance being Fe and incidental impurities, and the bearing material further contains 0.020 mass % or less of AlN, or the number of nonmetal sulfide inclusions each having a thickness of 1 .mu.m or more is 1,200 or less in an observation area of 320 mm.sup.2 for further extending the rolling contact fatigue life.

    摘要翻译: PCT No.PCT / JP97 / 00549 Sec。 371日期:1997年10月20日 102(e)日期1997年10月20日PCT 1997年2月26日PCT PCT。 公开号WO97 / 32050 PCT 日期1997年9月4日用于滚动轴承的滚动材料,例如滚子轴承和滚珠轴承,特别是具有延长的滚动接触疲劳寿命的轴承材料。 具有延长的滚动接触疲劳寿命的轴承材料包括:C:0.95〜1.10质量%,Si:0.15〜0.70质量%,Mn 1.15质量%以下,Cr:0.90〜1.60质量%,Cr:0.025质量% P,进一步含有0.025质量%以下的S和0.0012质量%以下的作为形成非金属夹杂物的元素,余量为Fe和附带杂质,轴承材料还含有0.020质量%以下的AlN,或 为了进一步延长滚动疲劳寿命,在320mm 2的观察区域中,具有1μm以上的厚度的非金属硫化物夹杂物的数量为1,200以下。