...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Procedia CIRP >Effect of cryogenic cooling and tool wear on surface integrity of turned Ti-6Al-4V
【24h】

Effect of cryogenic cooling and tool wear on surface integrity of turned Ti-6Al-4V

机译：低温冷却和工具磨损对车削的Ti-6Al-4V表面完整性的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this work is to investigate the influence of flank wear and cutting fluid (emulsion vs. liquid nitrogen) on surface integrity in turning of titanium alloy Ti-6Al-4V. Longitudinal turning tests with pre-worn uncoated cemented carbide inserts are performed, after which the surface and subsurface layer of machined workpieces is studied. Results for residual stresses on the surface as well as in depth profiles, obtained by X-ray diffraction, are also presented. Scanning electron microscopy (SEM) is used to investigate the microstructure of the workpieces. The same tool holder was used for both cooling conditions, with the same nozzle configuration. The flow rate of liquid nitrogen was therefore limited and as a result, tool wear development was observed to be faster for cryogenic cooling than emulsion-based flood cooling. However, the results show limited differences in terms of achievable residual stresses when comparing cryogenic and conventional cooling at similar levels of tool wear. Despite an increase in tool wear rate, the cryogenic cooling conditions thus provide similar surface integrity results as emulsion cooling. The results suggest that the consumption of the cryogenic coolant can be reduced or optimized without a significant impact on surface quality.
机译：这项工作的目的是研究钛合金Ti-6Al-4V车削时的后刀面磨损和切削液（乳化液对液态氮）对表面完整性的影响。使用预磨损的未涂层硬质合金刀片进行纵向车削测试，然后研究机加工工件的表面和亚表层。还介绍了通过X射线衍射获得的表面以及深度轮廓上的残余应力的结果。扫描电子显微镜（SEM）用于研究工件的微观结构。两种冷却条件使用相同的刀架，喷嘴配置相同。因此，液氮的流速受到限制，结果发现，低温冷却的刀具磨损发展要快于乳液基的溢流冷却。但是，当比较在类似磨损水平下的低温冷却和常规冷却时，结果显示在可实现的残余应力方面有限的差异。尽管增加了工具磨损率，但低温冷却条件仍提供了与乳液冷却类似的表面完整性结果。结果表明，在不显着影响表面质量的情况下，可以减少或优化低温冷却剂的消耗。

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