钢砂的锯切过程试验研究

Experimental Study of Steel Grits during the Process of Sawing

对国内外钢砂锯切花岗岩试验的结果说明:钢砂在锯切过程中承受小能量多次冲击接触应力。商用铸造钢砂内存在一些宏观、微观裂纹,其失效的过程为破碎—犁削—破碎;非铸造钢砂失效过程为犁削—破碎模型。

Various types of steel grits, domestic and imported, used for sawing the granites are studied experimentally. The steel grits are shown to bear a stress of low-energy and repeated impacting contact during the process of sawing. There exist in commercial cast steel grits some macro and micro cracks. The failure of which follows the mode of crash-scratch-crash; while that of non cast steel grits follows the mode of scratch-crah.