论文部分内容阅读
中低压截止阀的密封面材质一般都为金属材料,其密封效果很差,跑漏现象较多。而非金属材料密封面的密封效果则比较理想,它们都具有良好的韧性和较高的抗拉强度,又有一定的耐热性,而且其摩擦性能也很突出,亦耐油耐酸、耐弱碱和一般溶剂。一般工作温度≤200℃、工作压力≤2.5MPa时,可用聚四氟乙烯;温度>100℃时不宜用尼龙1010;温度<60℃、压力<1.0MPa时,传动胶带也适用。
Medium and low pressure valve sealing surface material are generally metallic materials, the sealing effect is poor, running leakage phenomenon more. The non-metallic sealing surface sealing effect is more ideal, they have good toughness and high tensile strength, but also a certain degree of heat resistance, and its frictional properties are also very prominent, but also oil acid, alkali resistance And general solvents. General working temperature ≤200 ℃, working pressure ≤2.5MPa, available PTFE; Temperature> 100 ℃ should not use nylon 1010; temperature <60 ℃, pressure <1.0MPa, the transmission tape also applies.