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相关的气瓶阀门规定指出,阀门密封面不允许发生塑性变形,但是在进行了4 500多次超负荷的启闭试验后,即使阀瓣密封件产生了严重的塑性变形,气瓶阀仍然密封良好。因此,通过大量的试验,从理论上分析了气瓶阀阀瓣密封材料必然会产生塑性变形,也只有产生了塑性变形才能保证阀门实现气密封。
The relevant cylinder valve regulation states that the valve sealing surfaces are not allowed to deform plastically but after more than 4,500 open and close overload tests, the cylinder valve is still sealed despite severe plastic deformation of the valve seal good. Therefore, through a large number of tests, it is theoretically analyzed that the valve disc sealing material of the cylinder valve will inevitably undergo plastic deformation, and only plastic deformation can be produced to ensure the valve to be gas-tight.