The machinability of sintered carbons based on the correlation between tool wear rate and physical and mechanical properties
The machinability of sintered carbons based on the correlation between tool wear rate and physical and mechanical properties
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DOI：
10.1016/0043-1648(95)06832-5
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发表时间：
1996-07
期刊：
影响因子：
5
通讯作者：
M. Masuda;Y. Kuroshima;Y. Chujo
中科院分区：
文献类型：
--
作者：
M. Masuda;Y. Kuroshima;Y. Chujo
烧结炭由于其上级物理性能而常用于功能材料。然而，当加工某些种类的碳时，刀具磨损是显著的。本文讨论了基于刀具磨损率的切削加工性。制备了由填料和粘结剂组成的最简单的烧结碳，并使用K10级硬质合金进行了刀具寿命试验。在生产条件下，热处理温度对刀具磨损形态和磨损率有很大影响。随着温度升高，非晶结构不仅转变为石墨结构，而且切屑形成机制也发生变化。因此，前者导致显著的后刀面磨损，后者导致较低的后刀面磨损和合理的弧坑磨损。此外，从多元回归分析来看，后刀面磨损率与烧结炭的导热系数相关，而与烧结炭的力学性能无关。
Sintered carbons are often used for functional materials owing to their superior physical properties. When some kinds of carbon are machined, however, tool wear is remarkable. This paper deals with the machinability based on tool wear rate. The most simple sintered carbons which consist of filler and binder are prepared, and then tool life tests are conducted by using cemented carbide with grade K10. Tool wear pattern and wear rate are strongly affected by the thermal treatment temperature in production conditions. As the temperature rises, an amorphous structure not only transforms into a graphite structure, but also the chip formation mechanism changes. Consequently, the former leads to remarkable flank wear, the latter to low flank wear and reasonable crater wear. In addition, judging from multiple regression analysis, the flank wear rate correlates to the thermal conductivity rather than the mechanical properties of sintered carbons.