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国外文献 > 1.轴承 > 1. 基础理论与机制 > 摩擦与润滑

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标 题： 'Severe' wear challenge to 'as-cast' and 'double heat-treated' large-diameter metal-on-metal hip bearings
对“铸态”和“双热处理”大直径金属对金属髋关节轴承进行“严重”磨损挑战
作 者： J. G. Bowsher
J. Nevelos
P. A. Williams
J. C. Shelton
关键词： Metal-on-metal bearings  [金属对金属轴承]
Total hip replacement  [ 全髋关节置换术]
Heat treatment  [ 热处理]
Metallurgy  [ 冶金学]
Lubrication  [ 润滑]
Hip joint simulator  [ 髋关节模拟器]
Jogging  [ 慢跑]
出版年： 2006
期刊名： Proceedings of the Institution of Mechanical Engineers
机械工程师学会会刊
年卷期： 2006, vol.220, no.H2
摘 要： The wear generation of double-heat-treated and as-cast large-diameter metal-on-metal (MOM) hip bearings was investigated using standard- and 'severe'-gait simulations. The test hypothesis was that double heat treatment would change MOM hip wear compared with the as-cast condition. Two groups of high-carbon MOM bearings of 40 mm diameter were manufactured and subjected to either hot isostatic pressing (HIP) and solution annealing (SA) or no heat treatment (as cast). The results showed no statistical difference between the two groups under both running-in and steady state conditions. Even under the most 'severe'-gait simulation published to date, the mean volumetric wear rates were 2.9 and 3.9 mm{sup}3 per 10{sup}6 cycles for the HIP-SA and as-cast bearings respectively, showing a ten-fold increase in wear compared with walking. These differences were not statistically different; therefore our hypothesis was negated. Changes in alloy microstructure do not appear to influence the wear behaviour of high-carbon cast MOM articulations with similar chemical compositions. This is in sharp contrast with the published significance of bearing diameter and radial clearance on the wear of MOM hip bearings.

通过标准步态和“严苛”步态模拟，对双热处理和铸态大直径金属对金属（MOM）髋关节轴承的磨损情况进行了研究。研究假设为：与铸态条件相比，双热处理会改变MOM髋关节的磨损情况。制造了两组直径为40 mm的高碳MOM轴承，分别进行热等静压（HIP）和固溶退火（SA）处理，或未进行热处理（铸态）。结果表明，在运行初期和稳态条件下，两组之间的差异无统计学意义。即使在迄今为止发布的最“严苛”步态模拟下，HIP-SA轴承和铸态轴承的平均体积磨损率分别为每10⁶次循环2.9 mm³和3.9 mm³，相较于行走状态，磨损量增加了十倍。这些差异在统计上并无显著性。因此，我们的假设被否定。合金微观结构的变化似乎不会影响化学成分相似的高碳铸铁MOM关节的磨损行为。这与已发表的研究结果形成鲜明对比，即轴承直径和径向间隙对MOM髋关节轴承磨损具有显著影响。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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