Tungsten carbide has been extensively utilized in the manufacturing field due to its exceptional properties. However, traditional methods such as grinding or electric discharge machining often result in a low material removal rate and inevitable surface defects, making tungsten carbide one of the most challenging materials to machine. Milling has emerged as a promising alternative for machining tungsten carbide. However, the milling of tungsten carbide has not been widely applied in the industry due to a lack of comprehensive understanding regarding the milling performance of different tungsten carbides under various conditions. In this paper, a polycrystalline diamond (PCD) tool was used in the milling of tungsten carbides to investigate the effects of tool grain size, workpiece Co content, and WC grain size on tool wear and machining surface quality. It was found that PCD tools with larger grain sizes exhibited higher wear resistance. Additionally, excessive Co content in the workpiece and large WC grain size increased tool wear and degraded the quality of the machined surface. The primary types of tool wear observed in the milling of WC-Co included adhesive wear, abrasive wear, phase change wear, and oxidation wear.

中文翻译：

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PCD刀具铣削硬质合金时晶粒尺寸和钴含量对加工性能的影响


碳化钨因其优异的性能而被广泛应用于制造领域。然而，磨削或放电加工等传统方法通常会导致材料去除率低和不可避免的表面缺陷，使碳化钨成为最具挑战性的加工材料之一。铣削已成为加工碳化钨的一种有前景的替代方案。然而，由于对不同碳化钨在各种条件下的铣削性能缺乏全面的了解，碳化钨的铣削尚未在行业中广泛应用。本文采用聚晶金刚石（PCD）刀具铣削碳化钨，研究刀具晶粒尺寸、工件Co含量和WC晶粒尺寸对刀具磨损和加工表面质量的影响。结果发现，晶粒尺寸较大的 PCD 刀具表现出较高的耐磨性。此外，工件中过量的钴含量和大的碳化钨晶粒尺寸会增加刀具磨损并降低加工表面的质量。 WC-Co铣削中观察到的刀具磨损的主要类型包括粘着磨损、磨料磨损、相变磨损和氧化磨损。