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Development of Cemented Carbide Tool of Reduced Rare Metal Usage

机译:减少稀有金属的硬质合金刀具的开发

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摘要

Hard materials used for cutting tools include cemented carbides (WC-Co) and cermets (TiCN-Co/Ni). Tungsten, the main component of cemented carbides, is subject to supply risks. On the other hand, titanium, the main component of cermets, is at a much lower risk than tungsten. This work evaluates a composite structure of cemented carbide and cermet to reduce tungsten usage while maintaining the performance of the cutting tool. Composite structural materials are generally prone to cracking, deformation and breakage caused by the difference in shrinkage characteristics during sintering; the difference in the coefficient of thermal expansion; and the transfer (migration) of binder phase in the liquid state. We succeeded in producing a composite structural tool that shows cutting performance equivalent to cemented carbide tools in terms of wear and breakage resistance.
机译:用于切削工具的硬质材料包括硬​​质合金(WC-Co)和金属陶瓷(TiCN-Co / Ni)。钨是硬质合金的主要成分,存在供应风险。另一方面,钛是金属陶瓷的主要成分,其风险远低于钨。这项工作评估了硬质合金和金属陶瓷的复合结构,以减少钨的使用,同时保持切削工具的性能。复合结构材料通常由于烧结过程中收缩特性的差异而导致开裂,变形和破裂。热膨胀系数的差异;液态的粘合剂相的转移(迁移)。我们成功生产了一种复合结构工具,在耐磨性和抗断裂性方面显示出与硬质合金工具相同的切削性能。

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