聚晶金刚石复合片硬质合金层电解磨削变形规律的研究

Deformation analysis of carbide layer of PCD blanks in electrical chemical grinding process

研究了聚晶金刚石复合片硬质合金层电解磨削主要工艺参数对其变形量的影响规律,并在理论上分析了影响复合片变形的主要因素。结果表明,在电解磨削过程中,随着复合片总厚度的减小和电流密度的增大,复合片变形量逐渐增大;当电解液浓度增大到一定数值时,复合片变形不再增大。理论分析表明,复合片的上下表面温差和总厚度是影响变形的两大因素。

In this paper, the effect of electrical chemical grinding（ECG） process on the deformation of polycrystalline diamond blanks was studied. The main factors were theoretically analyzed. The results show that the deformation increases with the decrease of the blank overall thickness and the increase of the current density. When the electrolyte concentration rises to a certain value, the deformation amount does not raise. The temperature difference between upper surface and under surface and the blank overall thickness are the primary factors affecting the deformation amount.