Wojciechowski Szymon, Talar Rafał, Zawadzki Paweł, Legutko Stanisław, Maruda Radosław, Prakash Chander
Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland.
Faculty of Mechanical Engineering, University of Zielona Gora, 4 Prof. Z. Szafrana street, 65-516 Zielona Gora, Poland.
Materials (Basel). 2020 May 28;13(11):2467. doi: 10.3390/ma13112467.
The WCCo/PCD (Diamond Dispersed Cemented Carbide-DDCC) manufactured with the use of PPS (pulse plasma sintering) are modern materials intended for cutting tools with the benefits of tungsten carbides and polycrystalline diamonds. Nevertheless, the cutting performance of DDCC materials are currently not recognized. Thus this study proposes the evaluation of technological effects of a precise groove turning process of hard-to-cut AlSi13MgCuNi alloy with DDCC tools. The conducted studies involved the measurements of machined surface topographies after grooving with different cutting parameters. In addition, the tool life and wear tests of DDCC inserts were conducted during grooving process and the obtained results were compiled with values reached during machining with cemented carbide tools. It was also proved that grooving of AlSi13MgCuNi alloy with DDCC inserts enables 5 times longer tool life and almost 3-fold increase of cutting path compared to values obtained during grooving with H3 and H10 cemented carbide inserts. Ultimately, the feed value of = 0.15 mm/rev and cutting speed in a range of 800 m/min ≤ ≤ 1000 m/min during grooving with DDCC inserts can be defined as an optimal machining parameters, enabling the maximization of tool life and improvement in surface quality.
采用脉冲等离子烧结(PPS)制造的WCCo/PCD(金刚石弥散硬质合金-DDCC)是用于切削刀具的现代材料,兼具硬质合金和聚晶金刚石的优点。然而,目前DDCC材料的切削性能尚未得到认可。因此,本研究提出对使用DDCC刀具对难切削的AlSi13MgCuNi合金进行精密切槽加工的工艺效果进行评估。所进行的研究包括测量在不同切削参数下切槽后的加工表面形貌。此外,在切槽过程中对DDCC刀片进行了刀具寿命和磨损测试,并将所得结果与使用硬质合金刀具加工时达到的值进行了汇总。还证明,与使用H3和H10硬质合金刀片切槽时获得的值相比,使用DDCC刀片对AlSi13MgCuNi合金进行切槽可使刀具寿命延长5倍,切削路径增加近3倍。最终,在使用DDCC刀片切槽时,进给量f = 0.15 mm/rev和切削速度在800 m/min≤vc≤1000 m/min范围内可定义为最佳加工参数,可实现刀具寿命最大化并提高表面质量。