| 纳米硬质合金刀具切削Al/SiCp复合材料实验 |
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| 引用本文： | 郐吉才,张飞虎.纳米硬质合金刀具切削Al/SiCp复合材料实验[J].光学精密工程,2010,18(2):406-411. |
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| 作者姓名： | 郐吉才 张飞虎 |
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| 作者单位： | 河南理工大学机械与动力工程学院;哈尔滨工业大学机电学院; |
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| 基金项目： | 河南理工大学博士基金资助项目 |
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| 摘 要： | SiC颗粒具有较高的硬度，使Al/SiCp复合材料在切削时刀具磨损剧烈。纳米硬质合金具有较高的硬度、韧性及良好的抗磨损能力。制备了纳米硬质合金刀具WC-7Co，对Al/SiCp复合材料进行了切削实验，研究了纳米硬质合金刀具磨损机理和Al/SiCp复合材料的切屑去除机理，以及刀尖处后刀面磨损值。研究认为，纳米硬质合金刀具磨损的机理为SiC颗粒的微切削作用引起的磨料磨损，及SiC颗粒对刀尖刃口的高频、断续冲击引起的微崩刃及微破损，Al/SiCp复合材料的切削实质是断续切削；Al/SiCp复合材料去除机理为切屑的崩碎去除；纳米硬质合金后刀面磨损值较普通硬质合金小30%~50%。
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| 关 键 词： | 纳米硬质合金 Al/SiCp复合材料 磨损机理 断续切削 |
| 收稿时间： | 2009-09-05 |
| 修稿时间： | 2009-11-05 |
Experimental study on cutting performance of Al/SiCp composite with nano cemented carbide tool |
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| KUAI Ji-Cai.Experimental study on cutting performance of Al/SiCp composite with nano cemented carbide tool[J].Optics and Precision Engineering,2010,18(2):406-411. |
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| Authors: | KUAI Ji-Cai |
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| Affiliation: | 1. School of Mechanical and Power Engineering;Henan Polytechnic University;Jiaozuo 454000;China;2. College of Mechanical Engineering;Harbin Institute of Technology;Harbin 150001;China |
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| Abstract: | The tool can be worn seriously when Al/SiCp composite is machined due to the SiC particles with a higher hardness. Based on the new nano-cemented carbide characterized by his high hardness,toughness,flexural strength and higher wear resisting property,a WC-7Co nano cemented carbide tool was prepared,and the cutting experiment was carried out.The wear mechanism of nano cemented carbide tool and chip removal mechanism were studied. Results show that the wear mechanism of nano cemented carbide tool is an abras... |
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| Keywords: | nano cemented carbide Al/SiCp matrix composite wear mechanism interrupted cutting |
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