烧结制度对陶瓷结合剂金刚石砂轮性能的影响

doi:10.16552/j.cnki.issn1001-1625.2025.0111

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (8): 2988-2995.DOI: 10.16552/j.cnki.issn1001-1625.2025.0111

烧结制度对陶瓷结合剂金刚石砂轮性能的影响

阮佳豪¹, 张雷^1,2, 李宇佳³

1.宁波大学机械工程与力学学院,宁波 315211;
2.中国机械总院集团宁波智能机床研究院有限公司,宁波 315700;
3.宁波中机松兰刀具科技有限公司,宁波 315700

收稿日期:2025-01-27 修订日期:2025-04-20 出版日期:2025-08-15 发布日期:2025-08-22
通信作者: 张雷,博士,正高级工程师。E-mail:zhanglei86529029@sina.com.cn
作者简介:阮佳豪(1999—),男,硕士研究生。主要从事精密磨削砂轮成型工艺的研究。E-mail:2211090159@nbu.edu.cn
基金资助:
浙江省“尖兵”“领雁”研发攻关计划(2024C01086);宁波市重点研发计划(2023Z039)

Effect of Sintering Schedule on Performance of Ceramic Bond Diamond Grinding Wheel

RUAN Jiahao¹, ZHANG Lei^1,2, LI Yujia³

1. Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China;
2. Ningbo Intelligent Machine Tool Research Institute Co., Ltd. of China National Machinery Institute Group, Ningbo 315700, China;
3. Ningbo Songlan Cutting Tools Technology Co., Ltd., Ningbo 315700, China

Received:2025-01-27 Revised:2025-04-20 Published:2025-08-15 Online:2025-08-22

摘要/Abstract

摘要： 为满足精密加工对陶瓷结合剂金刚石砂轮的性能需求,本文通过改变烧结温度和保温时间,研究烧结制度对砂轮性能的影响。使用扫描电子显微镜、X射线衍射仪、洛氏硬度计、阿基米德排水法、三点弯曲法等方式对砂轮试样进行表征,确定最佳的烧结温度和保温时间。结果表明,在烧结温度(670~750 ℃)和保温时间(60~180 min)的实验参数范围内,随着烧结制度的变化,砂轮试样的物相组成未发生改变,仍然为金刚石和Li_xAl_xSi_3-xO₆。烧结温度对砂轮性能的影响强于保温时间,最佳的烧结温度为710 ℃,此时砂轮试样的抗折强度为106.92 MPa,洛氏硬度为90.6 HRB,试样体积收缩率达到10.48%,气孔率为9.36%。最佳的保温时间范围为90~150 min,此时砂轮试样的气孔率和体积收缩率均保持在10%左右,试样的抗折强度约为107 MPa,洛氏硬度约为90.5 HRB。

关键词: 金刚石砂轮, 陶瓷结合剂, 烧结温度, 保温时间, 显微形貌, 力学性能

Abstract: To meet the performance requirements of ceramic bond diamond grinding wheels for precision machining, this study investigated the effect of sintering schedule (sintering temperature and holding time) on the grinding wheel properties by altering these parameters. Grinding wheel samples were characterized using scanning electron microscope, X-ray diffractometer, Rockwell hardness testing, Archimedes' drainage method, and three-point bending tests to determine the optimal sintering temperature and holding time. The results show that within the experimental parameter ranges of sintering temperature (670~750 ℃) and holding time (60~180 min), the phase composition of the grinding wheel samples remains unchanged, consisting of diamond and Li_xAl_xSi_3-xO₆. The sintering temperature has a more significant effect on the grinding wheel performance than the holding time. The optimal sintering temperature is 710 ℃, at which the grinding wheel sample exhibits a bending strength of 106.92 MPa, Rockwell hardness of 90.6 HRB, volume shrinkage rate of 10.48%, and porosity of 9.36%. The optimal holding time range is 90~150 min, during which the porosity and volume shrinkage rate of the grinding wheel samples remain at approximately 10%, the bending strength is around 107 MPa, and the Rockwell hardness is approximately 90.5 HRB.

Key words: diamond grinding wheel, ceramic bond, sintering temperature, holding time, micromorphology, mechanical property

中图分类号:

TG74

阮佳豪, 张雷, 李宇佳. 烧结制度对陶瓷结合剂金刚石砂轮性能的影响[J]. 硅酸盐通报, 2025, 44(8): 2988-2995.

RUAN Jiahao, ZHANG Lei, LI Yujia. Effect of Sintering Schedule on Performance of Ceramic Bond Diamond Grinding Wheel[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(8): 2988-2995.

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烧结制度对陶瓷结合剂金刚石砂轮性能的影响

Effect of Sintering Schedule on Performance of Ceramic Bond Diamond Grinding Wheel

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