...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Adhesion >Threaded fasteners with applied medium or high strength threadlockers: effect of different tightening procedures on the tribological response
【24h】

Threaded fasteners with applied medium or high strength threadlockers: effect of different tightening procedures on the tribological response

机译：带有施加的介质或高强度螺纹锁锁器的螺纹紧固件：不同紧固程序对摩擦反应的影响

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

Threaded joints are widely used in the automotive industry, where threadlockers can be applied to prevent self-loosening and to possibly achieve a friction drop upon tightening. This study deals with this topic, investigating threadlocker tribological response before polymerization takes place. These lubricating properties are usually not considered in adhesive datasheets, but can be highly beneficial from the point of view of the achievable preload, thus preventing self-loosening. The topic was tackled experimentally, running an extensive campaign that involved a medium and a strong threadlocker (LOCTITE 243 and LOCTITE 270, respectively), used for tightening zinc-plated and black-oxidized screws. The testing procedure was inspired by a protocol being used by most manufacturers in the automotive field: in particular, the impacts of pre-tightening speed and of the time interval between pre-tightening and final tightening were investigated. The retrieved results indicate a lubricating effect of the medium threadlocker with achievable friction coefficients in the order of 0.11. Moreover, for both the threadlockers, a generally decreasing trend for the thread friction upon tightening for increasing time interval before tightening was observed. This is a particularly original outcome that could have remarkable implications for optimizing the assembly tasks of large sets of bolts.
机译：螺纹接头广泛用于汽车行业，其中螺纹锁锁器可用于防止自松，并且在收紧时可能达到摩擦下降。本研究涉及本主题，在聚合前调查Threadlocker摩擦学响应。这些润滑性质通常不考虑在粘合剂数据表中，但可以从可实现的预载的角度来看，从而防止自放松。该主题是通过实验解决的，运行广泛的广告系列，涉及介质和强大的螺纹锁定器（Loctite 243和Loctite 270），用于拧紧镀锌和黑色氧化螺钉。研究了大多数制造商在汽车领域使用的协议启发了测试程序：特别地，研究了预紧缩速度和预紧固和最终紧固之间的时间间隔的影响。所检索结果表示介质螺纹锁相器的润滑效果，其达到的摩擦系数为0.11。此外，对于螺纹锁器，观察到在收紧之前，在收紧时间间隔时，通常会降低螺纹摩擦的趋势。这是一个特别原始的结果，可以对优化大套螺栓的装配任务具有显着影响。

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