【摘要】 针对聚氨酯浇注机电磁截止阀存在的问题,提出新的结构设计方案,并对其密封性进行研究。分别以不锈钢球与黄铜、不锈钢球与聚四氟乙烯构成的密封面进行试验,研究密封宽度和密封面的粗糙度对密封性能的影响,并通过实验的方法求出保证密封所需的密封比压力的最佳值。更多还原

【Abstract】 Aiming at the problem of the electromagnetic shut-off valve for polyurethane casting machines,new structural design was put forward,and its seal function was research.The sealing surfaces of brass-stainless steel balls and PTFE-stainless steel ball were respectively tested.The effect of sealing width and sealing face roughness on seal function was analyzed,and the optimal value of sealing pressure was obtained by the experimental method.更多还原