Research On Sawing Key Technology Of Granite Ultra-thin Slabs

With the development of construction and decoration industry in the world, application of the stone materials is becoming more and more widely, and the conserving society idea is winning the hearts and minds of the people, all this make stone resources saving and fully utilizing to become the hot topic in stone industry, thinner stone slabs as stone materials has become the tide of history. prominent characteristics such as thin, light and transparent make the ultra-thin stones talent showing itself in the field of stone, but the disadvantages of the ultra-thin stones such as poor surface quality, easy fragmentation in processing, seriously restrict the mass application and production. Based on the thorough analysis on the state of arts of granite ultra-thin slabs sawing and the existing problems, axial vibration characteristics and forces of the the diamond circular saw blades and the fragmentation mechanism for sawing of granite ultra-thin slabs were discussed in this thesis.Market demand, developing direction and processing key technology of granite ultra-thin slabs were discussed, through the analysis of double saw cutting which is the most widely used for sawing ultra-thin stone slabs now, sawing forces and the distribution of sawing stress in the sawing were studied.The broken model of granite ultra-thin slabs was established, proposed the fragmentation mechanism of ultra-thin slabs, The main reasons are drastic change in the force in the slabs caused by transverse vibration and impact of sawblade, and the FEM simulation analysis of the process of cutting by ANSYS was proceeded and the critical thickness in which broken will not occur in certain processing parameters and slab sizes was discussed, then the optimist direction of the key technical was put foreword.Using finite element software ANSYS, the diamond circular saw blades were simulated. Verified the dynamic performance in certain machining parameters, the axial vibration characteristics and vibration discipline were studied.By ANSYS/LS-DYNA module, dynamic model of granite ultra-thin slabs cutting wase stablished, researched the effect of the intermittent grinding process on slab broken.The purpose of the paper are studying on the fragmentation mechanism of the granite ultra-thin slabs, there was a breakthrough in theory as well as an important meaning in guide practical production to cut waste and increase economic benefits, the results were consistent with the actual processing.