In this paper, the wear characteristics of diamond segments adopted to multi-blade combination circular saw with different diameters were compared and investigated in the process of granite through an experiment. Load model with a diameter as the variable of combination saw was established based on the maximum undeformed chip thickness of a single particle. Combined with the load model, scanning electron microscope, laser microscope and vernier calipers were used to comprehensively analyze the wear characteristics of segment form the aspects of the wear morphology of diamond and metal matrix, the particle protrusion height, and the abrasion loss of segment. The results indicated that load nonuniformity of diamond generated by diameters change of saw blade was the main reason for segment wear discrepancy of large and small diameter saw blade when rocks were sawed by combination saw, and abrasion loss of segment adopted to small diameter saw blade was significantly higher than that of large-diameter saw blade. Diameter variation of saw blade in combination saw caused the different wear mechanism of diamond in segment, pulled-out and macro-fractured crystals were dominant in small-diameter saw blade, then the proportion of whole particles increased in segment used to the saw blade of large diameter. Particle protrusion height was related to the diameter in the combination saw. The high protrusion height of particles existed in the large-diameter saw blade.

本文比较了不同直径的多刃组合圆锯所采用的金刚石片的磨损特性，并通过实验对其进行了研究。基于单个颗粒的最大未变形切屑厚度，建立了直径为组合锯变量的载荷模型。结合载荷模型，利用扫描电子显微镜，激光显微镜和游标卡尺，从金刚石和金属基体的磨损形态，颗粒突出高度和片段的磨损量等方面综合分析了片段的磨损特性。结果表明，锯片直径变化产生的金刚石载荷不均匀性是组合锯锯切岩石时大，小直径锯片节段磨损不均的主要原因，小直径锯片节段的磨损量较大。大大高于大直径锯片。组合锯中锯片直径的变化引起了段中金刚石的不同磨损机理，小直径锯片中拉出和宏观断裂的晶体占主导，然后段中整个颗粒的比例增加到锯片中。大直径。颗粒突出高度与组合锯中的直径有关。大直径锯片中存在高的颗粒突出高度。小直径锯片的磨耗明显高于大直径锯片。组合锯中锯片直径的变化引起了段中金刚石的不同磨损机理，小直径锯片中拉出和宏观断裂的晶体占主导，然后段中整个颗粒的比例增加到锯片中。大直径。颗粒突出高度与组合锯中的直径有关。大直径锯片中存在高的颗粒突出高度。小直径锯片的磨耗明显高于大直径锯片。组合锯中锯片直径的变化引起了段中金刚石的不同磨损机理，小直径锯片中拉出和宏观断裂的晶体占主导，然后段中整个颗粒的比例增加到锯片中。大直径。颗粒突出高度与组合锯中的直径有关。大直径锯片中存在高的颗粒突出高度。在小直径的锯片中，拉出的和宏观断裂的晶体占主导地位，然后在大直径的锯片中，整个颗粒的比例在分段中增加了。颗粒突出高度与组合锯中的直径有关。大直径锯片中存在高的颗粒突出高度。在小直径的锯片中，拉出的和宏观断裂的晶体占主导地位，然后在大直径的锯片中，整个颗粒的比例在分段中增加了。颗粒突出高度与组合锯中的直径有关。大直径锯片中存在高的颗粒突出高度。