【摘要】 通过测量节块抗弯强度、节块在锯切过程中的耐磨性能以及锯切力比 ,研究了金刚石表面镀覆Ti- Cr合金对节块性能的影响。研究表明 ,相对于不镀覆的金刚石 ,镀覆金刚石使节块的抗弯强度和耐磨性能均有不同程度的提高。但是节块的抗弯强度与耐磨度并无单调对应关系。由于金刚石表面镀覆改善了结合剂对金刚石的把持和金刚石的出露状态 ,切削阻力降低 ,切向力与法向力的比值减小。更多还原

【Abstract】 This paper deals with the effects of Ti-Cr coated diamonds on the performance of diamond impregnated segments through measuring segment bending strength, segment wear performance and force ratio. It is shown that both bending strength and wear performance are increased by the utility of Ti-Cr coated diamonds. However, the wear performance does not change proportionally with the bending strength. The cutting resistance and the ratio of tangential force to normal force are reduced by the use of Ti-Cr coating due to the improved bonding between diamond and matrix and hence the increased protrusion height of diamond grits.更多还原