• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>STP 1465; Symposium on Bearing Steel Technology-Advances and State of the Art in Bearing Steel Quality Assurance; 20050517-19; Reno,NV(US) >New Development in Through Hardened Bearing Steel Grades for Use in Contaminated Lubrication
【24h】

New Development in Through Hardened Bearing Steel Grades for Use in Contaminated Lubrication

机译：用于污染润滑的全硬化轴承钢等级的新发展

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bearing steel quality has been improved over the past decades by reducing the level and the size of nonmetallic inclusions. Therefore, fatigue lifetime of bearings is mainly governed by surface damage, such as debris denting due to foreign particles. Numerous studies have been performed to find out new steel grades or heat treatments to cope with such severe in-service conditions. Most of these studies argued that the level of retained austenite is the main parameter which governs fatigue lifetime. The present study relates to the effect of heat treatment and alloying elements on the fatigue lifetime of bearing steel in contaminated lubrication at room temperature. Several through hardened steel grades have been tested with different methodologies in order to investigate their behavior in case of: (1) Debris denting, (2) Resistance to Tempering, and (3) High loading conditions. An experimental procedure developed by FAG to simulate particle indentation on bearing has been used to study the behavior of each grade. On the other side, torsion tests at room and high temperature have been used to determine the evolution of fatigue limit. At last, flat washer testing at 4200 MPa is used to determine fatigue lifetime in high loading conditions. Results of fatigue tests are presented in this paper and analyzed in terms of tempering resistance and level of retained austenite.
机译：在过去的几十年中，通过减少非金属夹杂物的含量和尺寸，改善了轴承钢的质量。因此，轴承的疲劳寿命主要取决于表面损伤，例如异物导致的碎屑沉淀。已经进行了大量研究以发现新的钢种或热处理以应对这种严峻的使用条件。这些研究大多数认为，残余奥氏体含量是控制疲劳寿命的主要参数。本研究涉及在室温下受污染的润滑中，热处理和合金元素对轴承钢疲劳寿命的影响。为了研究在以下情况下的性能，已对几种淬硬钢种进行了测试，以便：（1）碎屑凹陷，（2）耐回火性和（3）高负荷条件。由FAG开发的模拟轴承上的压痕的实验程序已用于研究每个等级的行为。另一方面，室温和高温下的扭转试验已被用来确定疲劳极限的演变。最后，使用4200 MPa的平垫圈测试来确定高负载条件下的疲劳寿命。本文介绍了疲劳测试结果，并根据回火强度和残余奥氏体含量进行了分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号