摘要
对超细Fe基预合金粉对切割花岗岩锯片锋利度的影响进行了研究，分析了预合金粉在胎体中的作用。研究发现加入适量的Co可以防止锯片在切割高硬度花岗岩时产生的“烧刀”现象。同时，在Fe、Cu、Ni和Sn混合粉组成的胎体中，选择较细粒度50／60的金刚石可以适当提高锯片的切割效率。
This article is aimed at studying the effect of superfine iron-base prealloy powder on the sharpness of saw blades for cutting granite, and analyzes the application of prealloy powder in the matrix. Experimental results showed that the appropriate amount of cobalt may prevent ＂burning segments＂ when the saw blades are cutting the hard granite . Meanwhile, the cutting efficiency of the saw segment could be improved by adding 50/60 mesh diamonds to the matrix with iron,copper,nickle and tin.
