期刊
CHINESE JOURNAL OF AERONAUTICS
卷 27, 期 4, 页码 1022-1029出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cja.2014.03.015
关键词
Alumina bubbles; Bending strength; Cubic boron nitride (CBN); Porosity; Specific force; Specific grinding energy
资金
- Natural Science Foundation of China [51235004]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) of China
- Fundamental Research Funds for the Central Universities: Funding for Outstanding Doctoral Dissertation of China [BCXJ10-08]
- Funding for Jiangsu Innovation Program for Graduate Education of China [CX10B-090Z-05]
- Foundation of Graduate Innovation Center at NUAA of China [kfjj130120]
For high-efficiency grinding of difficult-to-cut materials such as titanium and nickel alloys, a high porosity is expected and also a sufficient mechanical strength to satisfy the function. However, the porosity increase is a disadvantage to the mechanical strength. As a promising pore forming agent, alumina bubbles are firstly induced into the abrasive layer to fabricate porous cubic boron nitride (CBN) wheels. When the wheel porosity reaches 45%, the bending strength is still high up to 50 MPa with modified orderly pore distribution. A porous CBN wheel was fabricated with a total porosity around 30%. The grinding performance of the porous composite-bonded CBN wheel was evaluated in terms of specific force, specific grinding energy, and grinding temperature, which were better than those of the vitrified one under the same grinding conditions. Compared to the vitrified CBN wheel, clear straight cutting grooves and less chip adhesion are observed on the ground surface and there is also no extensive loading on the wheel surface after grinding. (C) 2014 Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据