Segment Wear Characteristics of the Frame Saw for Hard Stone in Reciprocating Sawing Mode

Abstract

The frame saw is not limited by the size of the stone. It can be installed 120 saw blades with a length of 4 m. The thickness of the saw blade is generally less than 3.5 mm, which reduces the generation of waste debris in the stone sawing process. There is no noise and dust pollution in the sawing process, which meets the requirements of high energy, low consumption and environmental protection advocated. However, in the process of sawing hard stone, the flatness of stone surface is poor. The experiment of sawing hard stone with reciprocating frame saw is carried out, and the wear morphology of the saw tooth is analyzed by SEM. The main wear forms of diamond particles are whole crystal, micro-fractured, macro-fractured, flat, and pull out. Among the pulling out diamond grains, the abnormal pulling-out diamond grains are the most, and the depth is more than or close to half of the diameter of the grains. Cracking was found at the interface between diamond grain and matrix. Through the systematic analysis of diamond grain wear, the theoretical basis is provided for the design of new sawing mode.