| 金属陶瓷刀具切削铸铁的磨损机理研究 |
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| 引用本文： | 石增敏,郑勇,袁泉,刘文俊.金属陶瓷刀具切削铸铁的磨损机理研究[J].硬质合金,2007,24(1):47-51. |
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| 作者姓名： | 石增敏 郑勇 袁泉 刘文俊 |
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| 作者单位： | 1. 三峡大学机械与材料学院,湖北宜昌,443002
2. 华中科技大学,塑性成形模拟及模具技术国家重点实验室,湖北武汉,470074;南京航空航天大学材料科学与技术学院,江苏南京,210016 |
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| 基金项目： | 国家自然科学基金;国家重点实验室基金;三峡大学校科研和教改项目 |
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| 摘 要： | 利用真空烧结工艺制备了纳米复合Ti(C,N)基金属陶瓷刀片。进行铸铁的单因素切削试验,并利用SEM、EPMA对金属陶瓷刀具的磨损失效机理进行了详细的研究。结果表明:纳米复合Ti(C,N)基金属陶瓷刀片只适宜小切削用量下铸铁的切削加工,切削铸铁时主要以磨损的形式失效,其主要的磨损失效机理是冲击磨损和崩碎切屑的研磨。
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| 关 键 词： | 金属陶瓷刀具 切削 磨损机理 |
| 修稿时间： | 2006-07-12 |
Wear Mechanism of Ceramic Tools in Cutting Cast Iron |
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| Shi Zengmin,Zheng Yong,Yuan Quan,Liu Wenjun.Wear Mechanism of Ceramic Tools in Cutting Cast Iron[J].Cemented Carbide,2007,24(1):47-51. |
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| Authors: | Shi Zengmin Zheng Yong Yuan Quan Liu Wenjun |
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| Affiliation: | 1.College of Mechanical and Material Engineering, China Three Gorges University, Yichang Hubei 443002; 2. Sate Key Laboratory of Die and Mould Technology, Huazhong University of Science and Technology, Wuhan Hubei 430074; 3. College of Materials Sciences and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing Jiangsu 210016 |
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| Abstract: | Nano composite Ti(C,N)-based ceramic tools were prepared by vacuum sintering and tested in cutting cast iron at various combinations of cutting speed (Vc),feed rate (f),and depth of cut (ap). The wear mechanism was investigated in detail using scanning electron microscopy (SEM) and electron-probe microanalysis (EPMA). It was found that,the newly fabricated nano composite Ti(C,N)-based ceramic insert was suitable to cast iron at a combination of low cutting speed,feed rate,and depth of cut. For nano composite Ti(C,N)-based ceramic tools,the wear mechanism was predominantly controlled by the flank wear under all cutting condition,and impact wear and fragmental chips lapping were the main source of tools failure. |
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| Keywords: | ceramic tool cutting wear mechanism |
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