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Case Depth and Static Capacity of Surface Induction-Hardened Rings

机译:表面感应强化环的表面深度和静容量

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Large-size slewing bearings are usually surface hardened by means of induction heating. The load-carrying capacity of the bearing is dependent on, among others, the depth of the hardened layer, i.e., case depth (CD). It is of crucial importance for bearing manufacturers to ensure that sufficient CD is produced to meet the required bearing capacity for the applications. Compared to through-hardened bearings, the calculation method for the load-carrying capacity of surface-hardened bearings, especially the induction-hardened bearings, is not well established. This paper reports on a new calculation method for the static capacity of induction-hardened rings. The method is based on consideration of both the plastic indentation on the raceway and the damage tolerance in the subsurface region. The models for evaluating plastic indentation and subsurface damage have been validated with the standing contact fatigue testing.
机译:大型回转支承通常通过感应加热进行表面硬化。轴承的承载能力尤其取决于硬化层的深度,即表面深度(CD)。对于轴承制造商而言,至关重要的是要确保生产足够的CD以满足应用所需的承载能力。与全硬化轴承相比,表面硬化轴承,特别是感应淬火轴承的承载能力的计算方法还不完善。本文介绍了一种新的感应淬火环静力计算方法。该方法是基于考虑到滚道上的塑性压痕和地下区域的损伤容限。用于评估塑料压痕和表面损伤的模型已通过静置接触疲劳测试得到验证。

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