• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (15): 105-120.doi: 10.3901/JME.2022.15.105

• 特邀专栏:先进磨粒加工技术 • 上一篇    下一篇

扫码分享

面向绿色高效磨削的振荡热管砂轮磨削温度与强化传热分析

钱宁, 徐九华, 傅玉灿, 姜帆, 张靖周   

  1. 南京航空航天大学机电学院 南京 210016
  • 收稿日期:2021-09-25 修回日期:2022-04-08 发布日期:2022-10-13
  • 通讯作者: 徐九华(通信作者),男,1964年出生,博士,教授,博士研究生导师。主要研究方向为高效精密加工技术。E-mail:jhxu@nuaa.edu.cn
  • 作者简介:钱宁,男,1993年出生,博士,助理研究员,博士后。主要研究方向为高效精密加工技术。E-mail:n.qian@nuaa.edu.cn
  • 基金资助:
    中国博士后科学基金面上(2021M701696)、国家自然科学基金重大研究计划(92060203)和南京航空航天大学大型仪器设备共享基金资助项目。

Investigation on Grinding Temperature and Heat Transfer Performance of Oscillating Grinding Wheel for High-efficient Green Grinding

QIAN Ning, XU Jiuhua, FU Yucan, JIANG Fan, ZHANG Jingzhou   

  1. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
  • Received:2021-09-25 Revised:2022-04-08 Published:2022-10-13

摘要: 高温合金由于其导热性差、比强度高,在磨削过程中弧区易产生并积聚大量磨削热,导致磨削烧伤。传统的冷却液浇注技术乃至高压水射流冷却技术都难以确保其磨削过程的冷却效果。基于绿色制造和清洁生产的发展理念,提出了一种振荡热管砂轮,其核心思想是借助振荡热管内部工质的相变及循环运动,及时、高效、稳定地疏导磨削弧区的热量,实现高温合金的干磨削。针对高温合金绿色加工的传热需求,设计并制作了振荡热管砂轮,开展了振荡热管砂轮的传热仿真分析和干磨削高温合金试验研究。研究结果表明,相比于传统砂轮,振荡热管砂轮的传热能力提高了88.4%~96.6%,可将58%~79%的磨削热通过砂轮及时疏导出去,从而将磨削温度降低了约40%,并始终控制在600℃以内。正是由于其高效的热疏导能力,振荡热管砂轮的磨削效率相比于传统砂轮提高了约2.4倍。振荡热管砂轮通过改变弧区热分配机制,有效控制了磨削烧伤,实现了高温合金的绿色高效磨削加工。

关键词: 磨削温度, 强化传热, 高温合金, 振荡热管砂轮, 绿色磨削

Abstract: Due to the low thermal conductivity and high specific strength of superalloy, it is easy to generate and accumulate a large amount of heat in the contact zone during the grinding process, which results in high grinding temperature and burn-out.Traditional flood-cooling technology and even high-pressure water jet technology are difficult to ensure the cooling effect of the grinding process.Based on the development concept of green manufacturing and clean production, an oscillating heat pipe grinding wheel is proposed.Its core idea is to use the phase change and cyclic movement of the working fluid of the oscillating heat pipe to timely, efficiently and stably dissipate the heat of the grinding zone to achieve dry grinding of superalloys.According to the heat transfer requirements of green grinding superalloys, the oscillating heat pipe grinding wheel is designed and manufactured.The heat transfer simulation and the experimental research on dry grinding of superalloys by oscillating heat pipe grinding wheel are carried out.Resultsshow that, compared with the grinding wheel without oscillating heat pipe, the heat transport capacity of the oscillating heat pipe grinding wheel is increased by 88.4%-96.6%, and 58%-79% of the grinding heat can be dissipated through the grinding wheel in time, thereby the grinding temperature is reduced by about 40%, and is controlled within 600℃.Because of its high heat transfer performance, the material removal rate of the oscillating heat pipe grinding wheel is increased by about 2.4 times compared with the grinding wheel without oscillating heat pipe.The oscillating heat pipe grinding wheel effectively controls the grinding burn by changing the heat partition behavior of the grinding zone, and realizes the high-efficient green grinding of superalloys.

Key words: grinding temperature, enhanced heat transfer, nickel-based superalloy, oscillating heat pipe grinding wheel, green grinding

中图分类号: