聚晶金刚石(PCD)刀具发展综述

对聚晶金刚石 (PCD)刀具的发展概况、性能特点、应用范围、制造技术、设计原则。

聚晶金刚石加工刀具在中国的研究与发展

详细介绍了聚晶金刚石(PCD)木工刀具在中国的研究发展情况,并对中国木材加工工业的现状、PCD木工刀具的使用特性以及主要的研究方向进行了分析,指出PCD刀具在木工行业有着广阔的应用前景。

PCD刀具加工强化复合地板中磨损行为的断裂力学研究

本文首先利用断裂力学的理论,分析了聚晶金刚石刀具切削过程中的沿晶和解理两种磨损特征及其形成过程。通过采用SYNDITE聚晶金刚石刀具对Al_2O_3颗粒表层强化复合地板的切削加工实验,验证了理论分析的正确性。研究表明聚晶金刚石刀具铣削Al_2O_3表层强化复合地板的过程中,刀具的磨损特征主要由沿晶磨损和解理磨损组成。并且,理论和实验结果表明刀具的磨损特征受到金刚石晶粒尺寸的影响。粗粒度聚晶金刚石易产生解理磨损形貌,细粒度的聚晶金刚石易产生沿晶磨损形貌。同时,研究表明微观裂纹特征对聚晶金刚石刀具的磨损起着重要的作用。

Wear of CVD thick film diamond cutter while machining laminated flooring

The wide application of high pressure laminated (HPL) flooring has an insistent need for cutting tools with an excellent performance and fine cutting quality. Chemical vapor deposition (CVD) thick film diamond is a promising material for the machining of HPL flooring. In the present work, CVD thick film diamond tools were used to mill the wear resistance layer of HPL flooring. Wear volumes of flank face were examined by optical microscopy, and micro wear morphologies were observed by scanning electron microscopy (SEM). The experiments revealed that the predominant wear characteristics of CVD diamond tools were transgranular cleavage wear and intergranular peeling of the CVD diamond. Experimental results also showed that twin characteristic, cavity defect, micro crack and grain size of CVD thick film diamond contributed greatly to the wear process of CVD thick film diamond tools. The effects caused by the factors were also analyzed in detail in the paper.