ISSN   1004-0595

CN  62-1095/O4

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郑光明, 程祥, 杨先海, 徐汝锋, 赵军. Al2O3/TiCN涂层刀具的滑动磨损性能及切削性能研究[J]. 摩擦学学报, 2018, 38(3): 356-363. DOI: 10.16078/j.tribology.2018.03.014
引用本文: 郑光明, 程祥, 杨先海, 徐汝锋, 赵军. Al2O3/TiCN涂层刀具的滑动磨损性能及切削性能研究[J]. 摩擦学学报, 2018, 38(3): 356-363. DOI: 10.16078/j.tribology.2018.03.014
ZHENG Guangming, CHENG Xiang, YANG Xianhai, XU Rufeng, ZHAO Jun. Sliding Wear Performance and Cutting Performance of the Al2O3/TiCN Coated Tool[J]. TRIBOLOGY, 2018, 38(3): 356-363. DOI: 10.16078/j.tribology.2018.03.014
Citation: ZHENG Guangming, CHENG Xiang, YANG Xianhai, XU Rufeng, ZHAO Jun. Sliding Wear Performance and Cutting Performance of the Al2O3/TiCN Coated Tool[J]. TRIBOLOGY, 2018, 38(3): 356-363. DOI: 10.16078/j.tribology.2018.03.014

Al2O3/TiCN涂层刀具的滑动磨损性能及切削性能研究

Sliding Wear Performance and Cutting Performance of the Al2O3/TiCN Coated Tool

  • 摘要: 进行了滑动摩擦磨损和高速干切削试验,研究了Al2O3/TiCN涂层硬质合金刀具材料的磨损机理. 结果表明:摩擦系数随着滑动速度的增加而减小,在FN=10 N时,摩擦系数最大. 随着载荷和滑动速度的增加,磨损率有减小的趋势. 受摩擦力和摩擦热的作用,在涂层刀具材料表面形成鱼鳞状的粘结层,随着速度和载荷增加,粘结的金属材料增多. 在刀具前刀面靠近刀尖处形成了耐磨氧化物,提高刀具抗磨损性能,但在后刀面易形成少量的铁氧化物,加剧刀具磨损. 其中,在刀具材料磨损表面形成的次生粘结层或氧化薄膜(如TiO2、SiO2),起到了润滑、减摩的作用,有利于刀具材料耐磨性能的提高. 本文中的研究成果可望在指导高强度钢类材料的高效、高质量加工中发挥积极地作用.

     

    Abstract: The wear mechanisms of the Al2O3/TiCN coating carbide cutting tool were investigated by sliding friction and high-speed turning experiments. The experimental environment was in air with dry conditions. The results indicate that the friction coefficient decreased with the increase of sliding speed, and the highest friction coefficient was obtained at FN=10 N. As the load and sliding speed increased, the wear rate tended to decrease. During the dry sliding wear process, a scale-like adhesion layer was presented on the coated tool surface, which was contributed by the high friction force and friction heat. Moreover, the amount of the adhesion metal material increased with the sliding speed and load. During the high-speed dry turning process, the wear-resistant oxides formed near the tool nose on the rake face, which improved the tool wear resistance. However, on the flank face, it was easy to form a small amount of iron oxide which deteriorated the tool wear. On the tool surface, the secondary adhesion layer or oxide film (e.g. TiO2, SiO2) was lubricious, which was in favor of improving the wear resistance of the coated tool. The results were expected to play an active role in guiding the high-efficiency and high quality machining of high-strength steel materials.

     

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