高效长寿命花岗石专用锯片的研制

由于花岗石中有大量的难加工的组分，所以提高锯片性能的关键是锯片耐磨，同时保持锋利性。本文分析了国外锯片，又实验对比了13种胎体成分，选用冲击韧性好的高品级金刚石，粗、细粒度金刚石混用，且粗、中粗的最佳含量是80％；WC基结合剂中W骨架材料使胎体形成W-Cu-Ni高致密固溶体。耐磨相YG8或WC含量增加5％，金刚石浓度增加4％，可以显著提高锯片的耐磨性。

HIGH-EFFICIENCY AND LONGEVAL DIAMOND SAW BLADE FOR CUTTING GRANITE

Granite is difficult to cut, the key to improve the performance of the saw blades is to keep them abrasion-resistant and sharp . In this paper composition analysis is made on the saw blades from home and abroad and found that choosing diamond of high TTI ( value Thermal Toughness Index) and using mixed grains (coarse and mid-coarse grains to 80%) can keep the saw blade sharp. The result from experiments on thirteen types of matrix showed that W can make the W-Cu-Ni solid solution with high density form in the matrix. Increasing the content of YG8 or WC by 5 % and the concentration of diamond by 4 % can raise the abrasion resistance of the saw blade.