• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>CERAMICS INTERNATIONAL >Applicability of DLC and WC/C low friction coatings on Al2O3/TiCN mixed ceramic cutting tools for dry machining of hardened 52100 steel
【24h】

Applicability of DLC and WC/C low friction coatings on Al2O3/TiCN mixed ceramic cutting tools for dry machining of hardened 52100 steel

机译：DLC和WC / C低摩擦涂层对硬化52100钢的干加工的DLC和WC / C低摩擦涂层的适用性

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

The present work examines the applicability of DLC and WC/C low friction coatings on Al2O3 /TiCN based mixed ceramic cutting tools for the dry and hard turning of AISI 52100 steel (62 HRC). The characterization of coated tools reveals that the coatings retain very low values of surface roughness, whereas the DLC coating exhibits much higher microhardness when compared to the WC/C coating. On the other hand, the WC/C coating exhibit a coarse surface morphology virtually due to the tungsten doping. Later, continuous turning tests were executed with the help of coated and uncoated cutting tools under dry cutting conditions, and their performance was investigated in terms of machining forces, cutting temperature and tool wear. Coating delamination by flaking and peeling is quite prominent in the case of both the coatings; however, it is less severe for the WC/C coated tool. The coatings help to reduce machining forces, cutting temperatures and tool wear, but the performance of coated tools converge towards uncoated tool as the cutting speed, and feed rate is increased. Both the coatings prevent the development of cracks near the cutting edge with WC/C coating exhibiting superior wear behavior basically due to its multilayered structure and better thermal stability. Moreover, the tested low friction coatings don't serve as thermal barriers and only the lubrication generated due to graphitization at the chip-tool interface is mostly responsible for the improved machining performance.
机译：本作工作研究了DLC和WC / C低摩擦涂层对AISI 52100钢（62HRC）的干燥和硬转动的混合陶瓷切削工具的适用性。涂层工具的表征揭示涂层保持表面粗糙度非常低，而DLC涂层与WC / C涂层相比，DLC涂层表现出更高的微硬度。另一方面，由于钨掺杂，WC / C涂层几乎具有粗糙表面形态。后来，在干切削条件下的涂层和未涂层​​切削工具的帮助下执行连续转动试验，并在加工力，切削温度和工具磨损方面进行了调查。通过剥落和剥离的涂层分层在涂层的情况下非常突出;然而，WC / C涂层工具不太严重。涂料有助于降低加工力，切割温度和刀具磨损，但涂层工具的性能随着切割速度而朝向未涂层工具的性能，进给速率增加。两种涂层都防止了在切削刃附近的裂缝的开发，WC / C涂层由于其多层的结构和更好的热稳定性而显示出优异的磨损行为。此外，测试的低摩擦涂层不用作热屏障，并且仅在芯片工具界面处的石墨化由于石墨化产生的润滑主要负责改进的加工性能。

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