Abrasive wheels Using new materials to replace fired ceramic abrasive quartz sand for sand pad

Using new materials to replace fired ceramic abrasive quartz sand for sand cushion, improve the labor environment is an urgent need to resolve the issue. In this paper, resulting in a ceramic abrasive plant root cause silicosis - quartz sand mats were analyzed, through access to a lot of relevant information on the physical and chemical properties of certain materials were tested, and test fired ceramic abrasive mounted.  abrasive grinding  efforts, finally found a promising replace quartz sand mat new material. The main research work and test results of an overview of the relevant aspects of the quartz crystal structure of theoretical knowledge. It can be seen, the quartz crystal having a complex multi-resistance. Quartz sand in ceramic  polycrystalline diamond  and cooling process, due to changes in polycrystalline quartz occur when inevitably accompanied by changes in the volume, the resulting stresses and cracks, making their strength reduced from large particles into small particles even powder.

Diamond blade Semi-fixed abrasive grains with large particles and rigid "trap" effect, the machined surface can be prevented from being scratched large particles

In order to alleviate this contradiction, ultra-precision Research Center, Zhejiang University of  polycrystalline diamond  a semi-fixed abrasive grinding processing technology, which is a new type of abrasive, has good processing properties, can effectively solve the problem of the machined surface damage, both processing efficiency and processing quality, efficient precision machining, semi-fixed abrasive synthetic diamond  fixing the abrasive machining abrasive machining and were free to integrate the advantages. In addition, semi-fixed abrasive grinding of large particles have a hard "trap" effect, to prevent large particles of the machined surface is scratched, the paper mainly semi-fixed abrasive grinding "trap" effect of doing in-depth discussion. In the article the use of discrete element modeling semi-fixed abrasive grinding "trap" effect, in the simulation process, both sides of the wall instead of using discrete element generated conical large particles, due to the semi-fixed combination of abrasive grit overall agent is weak, the simulation process into large particles can be abrasive in slowly.