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活塞式压缩机质量的重要标志之一是气阀的质量。气阀诸零件中阀片、阀弹簧系高应力簇件,尤其是阀簧的使用期长短影响着机器故障停机率的大小。阀簧长期连续在较高频率下承受小能量冲击,在较高温度下腐蚀性气体介质中使用。阀簧的失效,绝大多数表现为较高的应力松弛速率及蠕变失效。在宏观上表现为弹簧力的明显衰弱以至断裂。我们观测按传统工艺制造的阀簧装机运转几十小时或几百小时,多数阀簧的自由高度（机下测量）缩短值竟达10～20％。对于这些弹簧（压缩机转速为375r/min; 介质为氮氢气;破裂前工作周次
Piston compressor quality is one of the important signs of the quality of the valve. Valves in the valve parts, valve springs Department of high-stress cluster, in particular, the length of the valve spring affect the machine downtime rate of the size of the failure. Long-term continuous valve spring to withstand small energy shocks at higher frequencies, the use of corrosive gas medium at higher temperatures. Valve spring failure, the vast majority of the performance of the higher stress relaxation rate and creep failure. In the macroscopic performance of the apparent weakness of the spring force as well as fracture. We observe traditional valve spring manufacturing process installed tens of hours or hundreds of hours, most of the free spring valve height (measured under the machine) as short as 10 to 20%. For these springs (compressor speed 375r / min; media for nitrogen and hydrogen; working week before rupture