Evaluation of PCD tool performance during machining of carbon/phenolic ablative composites
Evaluation of PCD tool performance during machining of carbon/phenolic ablative composites
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DOI：
10.1016/s0924-0136(00)00549-5
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发表时间：
2000-08
影响因子：
6.3
通讯作者：
P. Sreejith;R. Krishnamurthy;S. K. Malhotra;K. Narayanasamy
中科院分区：
文献类型：
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作者：
P. Sreejith;R. Krishnamurthy;S. K. Malhotra;K. Narayanasamy
聚合物复合材料的机械加工是一个仍然充满开放性问题的领域，与金属切削相比，与机械加工和热方面的评估有关。由于复合材料的特殊性，精确分析仍然缺乏进展。在这项调查中，面对车削试验进行碳/酚醛烧蚀复合材料使用多晶金刚石工具。比切削压力和加工温度的观察揭示了存在一个临界加工速度。已经确定了有效加工复合材料的加工温度范围，超过该范围，工具劣化以及由此的特定切削压力显著增加。该研究还能够确定可以进行稳定加工的刀具材料的有效硬度。
Machining of polymeric composite materials is an area still full of open questions, pertaining to the assessment of machining and thermal aspects compared to metal cutting. Due to the particular nature of composite materials, precise analysis still lacks progress. In this investigation, face-turning trials were performed on carbon/phenolic ablative composites using polycrystalline diamond tools. Observations on specific cutting pressure and machining temperature revealed the existence of a critical velocity of machining. A range of machining temperature has been identified for effective machining of the composite material, beyond which tool deterioration and thereby the specific cutting pressure increases considerably. The study also enabled the determination of the effective hardness of the tool material at which steady machining can be performed.