• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Asia Pacific Conference on Optics Manufacture; 20070111-13; Hongkong(CN) >A Quasi-Steady-State Thermal Model for Laser-Assisted Cutting of Zirconia Ceramics
【24h】

A Quasi-Steady-State Thermal Model for Laser-Assisted Cutting of Zirconia Ceramics

机译：氧化锆陶瓷激光辅助切割的准稳态热模型

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

This study has developed a thermal model for laser-assisted cutting of zirconia ceramics. Laser-assisted cutting can increase ceramics removal rates by utilizing a localized heat source to elevate the workpiece temperature prior to material removal with traditional cutting tool. At high temperatures the yield strength of ceramics can decrease below the fracture strength, changing the material deformation behavior from brittle to ductile and enabling the use of a single point cutting tool to remove material at rates approaching those of metal cutting. A thermal model has been developed for the workpiece of ceramics cylinder rotating with a constant speed, which was preheated by a laser and cut by cutting tool. Since the cutting tool followed the moving laser with a fixed distance in the axial direction, i.e. the feed rate of the cutting tool was the same as the moving velocity of the laser, this thermal model has been formulated in a cylindrical coordinate system that moved with the laser beam or cutting tool and therefore, this problem was a quasi-steady-state problem. An analytical solution for this thermal model has been obtained. The results calculated by this model agree with the available experimental data. The temperature field is presented during laser-assisted cutting of ceramics. The effects of feed rate and laser power on temperature field are also discussed in this study.
机译：这项研究开发了一种用于激光辅助切割氧化锆陶瓷的热模型。激光辅助切割可以通过利用局部热源在使用传统切割工具进行材料去除之前提高工件温度来提高陶瓷去除率。在高温下，陶瓷的屈服强度可能会降低到断裂强度以下，从而将材料的变形行为从脆性变为韧性，并能够使用单点切削工具以接近金属切削的速率去除材料。已经开发出了一个热模型，用于以恒定速度旋转的陶瓷圆柱体工件，并通过激光对其进行预热并通过切削工具进行切削。由于切削工具沿轴向移动的激光在轴向上具有固定的距离，即切削工具的进给速度与激光的移动速度相同，因此该热模型已被公式化为一个圆柱坐标系，该坐标系随因此，这个问题是准稳态问题。已获得此热模型的解析解。该模型计算的结果与可用的实验数据一致。在陶瓷激光切割过程中会显示温度场。这项研究还讨论了进给速度和激光功率对温度场的影响。

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