Wear patterns and wear mechanisms of cutting tools used during the manufacturing of chopped carbon fiber
Wear patterns and wear mechanisms of cutting tools used during the manufacturing of chopped carbon fiber
复制标题
短切碳纤维制造过程中使用的切削刀具的磨损模式和磨损机制
DOI：
10.1016/j.ijmachtools.2015.06.008
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发表时间：
2015-10
影响因子：
14
通讯作者：
Xie Yingxi
中科院分区：
文献类型：
--
作者：
Shen Zhongfu;Lu Longsheng;Sun Jiawei;Yang Feng;Tang Yong;Xie Yingxi
短切碳纤维是制备短切碳纤维增强塑料（SCFRP）的有效方法。由于碳纤维的高磨损性，在此过程中观察到切削刀具的剧烈磨损。需要研究磨损模式和磨损机制以减少刀具磨损并延长刀具寿命。本文研究了切削过程中磨损形貌的形成和转变。在21 k次切削后，切碎率小于95%;因此，从最初的21 k次切削中收集工具试样和数据。总的来说，磨损在一个切削位置处沿着工具边缘沿着形成新月形。这种磨损模式是由于纤维中长丝的不均匀分布引起的不均匀磨损体积，这形成了短切碳纤维的椭圆形轮廓。椭圆形轮廓导致更多的新月形磨损，这导致更不均匀的长丝分布，导致高磨损率。观察到短切碳纤维端部的锥形结构和刀具边缘的微划痕。从而验证了切削过程中的磨粒磨损机理。刀具轮廓上的磨损模式是切削刃倒圆（CER）和前刀面磨损的组合。介绍了由8 k切削划分的两个磨损阶段：CER磨损阶段（前）和前刀面磨损阶段（后）。在CER磨损阶段，磨损率基本稳定在32 μm/2k切削量，磨损模式为CER递增至20 μm。前角大约稳定在79°。在前刀面磨损阶段，磨损率开始增加，磨损模式从CER磨损过渡到大量前刀面磨损，其中CER减小并向后刀面倾斜，前角迅速减小。最后CER减小到4 μm，前角减小到14°。磨损模式包括在该阶段中出现在刀具前刀面上的凹槽，这与传统车刀前刀面上的凹坑磨损相似，因为刀具内部的硬度较低。基于三体磨粒磨损理论，建立了相应的磨损模型，并对磨损机理进行了分析。
Chopping carbon fiber is an efficient way to manufacture short carbon fiber reinforced plastic (SCFRP). Drastic wear of cutting tools during this process has been observed because of the highly abrasive nature of carbon fiber. Wear patterns and wear mechanisms need to be investigated to reduce tool wear and prolong tool life. This paper presents the formation and transition of wear patterns during the chopping process. The chopped rate is less than 95% after 21k cuts; thus, tool specimens and data are collected from the initial 21k cuts. Overall, the wear forms a crescent shape along the tool edge at one cutting position. This wear pattern is due to an uneven wear volume caused by the uneven distribution of filaments in the fibers, which forms an oval profile of the chopped carbon fiber. The oval profile results in more crescent shaped wear, which causes a more uneven filaments distribution, leading to a high wear rate. Conical structures at the ends of the chopped carbon fiber and micro scratches on the tool edge are observed. Thus, the abrasive wear mechanism during chopping is verified. The wear pattern on the tool profile is a combination of cutting edge rounding (CER) and rake face wear. Two wear stages divided by 8k cuts are introduced: the CER wear stage (before) and rake face wear stage (after). In the CER wear stage, the wear rate is basically stable at 32 μm/2k cuts and the wear pattern is an increasing CER up to 20 μm. The rake angle is approximately stable at 79°. In the rake face wear stage, the wear rate begins to increase and the wear pattern transitions from the CER wear to massive rake face wear in which the CER decreases and leans towards the flank face and the rake angle rapidly decreases. The CER decreases to 4 μm, and the rake angle decreases to 14° at the end. The wear pattern includes a groove that appears on the tool rake face in this stage, which is similar to crater wear on the rake face of a traditional turning tool because of the low hardness of the tool interior. Moreover, analytical models based on 3-body abrasive wear theory are developed to explain these wear patterns and wear mechanisms.
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影响因子：
5
作者：
Xin Wang;P. Kwon;C. Sturtevant;Dave Kim;Jeff Lantrip
通讯作者：
Xin Wang;P. Kwon;C. Sturtevant;Dave Kim;Jeff Lantrip
影响因子：
5
作者：
S. Rawat;H. Attia
通讯作者：
S. Rawat;H. Attia
DOI：
10.1299/jsme1958.27.1237
发表时间：
1984-06
期刊：
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子：
--
作者：
K. Sakuma;Yoshimichi Yokoo;M. Seto
通讯作者：
K. Sakuma;Yoshimichi Yokoo;M. Seto
影响因子：
6.3
作者：
M. Rahman;S. Ramakrishna;J. Prakash;D.C.G Tan
通讯作者：
M. Rahman;S. Ramakrishna;J. Prakash;D.C.G Tan
影响因子：
9.1
作者：
Fu, SY;Lauke, B
通讯作者：
Lauke, B