向道辉,郭振海,冯浩人,姚云龙,刘中云,赵波.微米及纳米金刚石涂层扁钻的制备及其切削性能[J].表面技术,2018,47(8):113-120.
XIANG Dao-hui,GUO Zhen-hai,FENG Hao-ren,YAO Yun-long,LIU Zhong-yun,ZHAO Bo.Fabrication and Cutting Performance of Micro- and Nano-crystalline Diamond Coated Spade Drills[J].Surface Technology,2018,47(8):113-120 |
| 微米及纳米金刚石涂层扁钻的制备及其切削性能 |
| Fabrication and Cutting Performance of Micro- and Nano-crystalline Diamond Coated Spade Drills |
| 投稿时间：2018-03-19 修订日期：2018-08-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.08.017 |
| 中文关键词: 热丝化学气相沉积 MCD 薄膜 NCD 薄膜 扁钻 切削性能 |
| 英文关键词:HFCVD MCD film NCD film spade drill cutting performance |
| 基金项目:国家自然科学基金资助项目（U1604255）；高性能复杂制造国家重点实验室开放基金（Kfkt2017-09）；河南省自然科学基金 （182300410200） |
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| Author | Institution |
| XIANG Dao-hui | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
| GUO Zhen-hai | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
| FENG Hao-ren | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
| YAO Yun-long | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
| LIU Zhong-yun | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
| ZHAO Bo | School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
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| 中文摘要: |
| 目的 研究微米金刚石薄膜（Microcrystalline diamond film，MCD film）和纳米金刚石薄膜 （Nanocrystalline diamond film，NCD film）的微观组织结构和表面质量，以及由两种薄膜涂覆制成的微米金刚石涂层扁钻（MCD coated spade drill）和纳米金刚石涂层扁钻（NCD coated spade drill）在切削碳纤维增强复合材料（Carbon fiber reinforced plastics，CFRP）时的切削性能。方法 采用热丝化学气相沉积法在硬质合金扁钻上分别制备 MCD 薄膜和 NCD 薄膜。使用扫描电子显微镜观察金刚石薄膜的表面和横截面形貌，利用白光干涉表面轮廓仪测量薄膜的表面粗糙度值，使用拉曼光谱仪检测薄膜的结构成分，利用 X 射线衍射仪（XRD）检测薄膜的晶体结构和晶面取向，通过切削实验分析无涂层刀具和微、纳米涂层刀具的切削性能。结果 制成的 MCD 和 NCD 薄膜涂覆均匀，两种薄膜的厚度都为 8 µm，晶面取向均以(111)面和(220) 面为主。MCD 薄膜晶粒棱角分明，平均晶粒尺寸为 2~3 µm，NCD 薄膜的表面更光滑，平均晶粒尺寸为 100 nm。MCD 和 NCD 薄膜测定区域的表面粗糙度值分别为 0.4 µm和 0.24 µm。在相同的切削条件下，无涂层刀具钻削 30 个孔后，刀具已经达到了报废标准，不能继续使用。两种金刚石涂层刀具各钻削 50 个孔后，MCD 和 NCD 涂层刀具后刀面的最大磨损量分别为 0.192 mm 和 0.093 mm，均没有超过磨钝标准 VB=0.2 mm（后刀面磨损带宽度），其中 NCD 涂层刀具的耐磨性最好。结论 MCD 和 NCD 薄膜，尤其是 NCD 薄膜，能够有效地提高硬质合金刀具的耐磨性，延长刀具的使用寿命。 |
| 英文摘要: |
| The work aims to study microstructure and surface quality of microcrystalline diamond film (MCD film) and NCD film (nanocrystalline diamond film), as well as cutting performance of MCD and NCD coated spade drills made from MCD and NCD films in cutting carbon fiber reinforced plastics (CFRP). The method of HFCVD was used to deposit MCD and NCD films on the surface of cemented carbide spade drills. Scanning electron microscope (SEM) was applied to observe surface and cross-sectional morphology of as-deposited diamond films, white-light interferometry was adopted to measure surface roughness of the films, Raman spectroscopy was used to assess structural components of the films, X-ray diffractometer (XRD) was used to characterize crystal structure and crystal orientation of the films, and cutting experiment was performed to investigate cutting performance of uncoated tool as well as as-deposited MCD and NCD coated tool. The two kinds of films were evenly coated with diamond grains on the tool, both films were 8 µm thick, and crystal orientations were mainly in direction (111) and (220). The diamond grains of MCD film displayed pyramid structures with sharp edges and corners, the average grain size was about 2~3 µm. MCD film contained angular grains, and average grain size was 2~3 µm; and NCD film had a smoother surface, and average grain size was about 100 nm. Surface roughness value Ra of the MCD and NCD films in measured areas was 0.4 µm and 0.24 µm, respectively. Under the same cutting conditions, the uncoated tool reached rejection standardand could not be used any more after drilling 30 holes. After drilling 50 holes, MCD and NCD coated tools sustained the maximum abrasion loss of 0.192 mm and 0.093 mm, respectively on the flank, and none of them exceeded dullness standard VB=0.2 mm (width of flank wear land). The NCD coated tool exhibited the best wear resistance.The MCD and NCD films, especially NCD film, can effectively improve wear resistance of carbide cutting tools and extend service lives of the tools. |
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