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Nozzles are widely used in machinery, petroleum, chemical, automotive , shipbuilding , metallurgy and other industries , for a variety of surface hardening , surface coating , surface cleaning , surface modification and jet cutting machinery and equipment on one of the key components , also mainly wear wearing parts . Sandblasted , the ceramic nozzles application more widely , the main failure mode of erosive wear . Through the study of ceramic nozzles erosion wear, is of great significance to effectively control and reduce the loss caused by the erosive wear , to improve the life of the nozzles . From sandblasting process production reality, through the movement of abrasive , abrasive collision nozzles according to the definition and classification of collision , identified belong to the low-speed collision . Depending on the specific structure of the spray gun and nozzles , the establishment of the single-particle erosion wear model and the theoretical analysis of the nozzles material force , combined with the study of the material wear resistance and erosion mechanism , the use of finite element analysis software to simulate the movement of the abrasive particles inside the nozzles , by analyzing the collision behavior of the inner wall of the abrasive particles and the nozzles , nozzles stress analysis, and the full study of the impact of various factors on the erosion wear . The use of finite element software as a research tool , the finite element simulation of specific structures and materials nozzles . And SiC abrasive erosion the B4C ceramic target plate example, the combination of brittle material erosion characteristics to verify the effectiveness of such finite element model . The erosion angle on the erosion wear rate , the analysis model of the local stress , energy distribution , reproduction erosive wear of ceramic materials from the point of view of the energy of the system . Using the finite element method simulation experiments , different nozzles and abrasive applications as a model , by modified adjusted finite element model and material parameters , a variety of factors erosive wear , with the help of simulation data , to improve spray the sand mouth life to provide guidance . The innovation of this paper is that : the finite element method , from the abrasive collisions and nozzles stress analysis angle nozzles erosion wear process , the use of simulation data , calculate erosion wear rate , study the nozzles materials parameters and abrasive parameters erosive wear .
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