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壁厚0.12毫米,直径9.5毫米的1Cr18Ni9Ti不锈钢管的波纹管,是压气机零级叶片调节器重要的温度敏感元件。钎焊组装时,管内充满了无腐蚀作用的温度敏感介质异戊醇液体。工作时,波纹管道管内液体空气流速的变化发生热胀冷缩,借以调节零级叶片的方向角,保证向压气机供气。工作状态的波纹管既要承受温度变化,也要承受发动机运转时产生的振动,这两个机械复合交变应力的作用。在长期台架试验和使用过程中,波纹管多次出现开裂,异戊醇外漏,导
Wall thickness 0.12 mm, diameter 9.5 mm bellows 1Cr18Ni9Ti stainless steel tube, the compressor is a zero-level blade regulator important temperature-sensitive components. Brazed assembly, the tube is full of non-corrosive temperature-sensitive medium isoamyl alcohol liquid. Work, the bellows pipe liquid air flow rate changes in the thermal expansion and contraction, in order to adjust the zero-order blade of the direction of the angle, to ensure the supply of gas to the compressor. The working state of the bellows must withstand the temperature changes, but also to withstand the vibration generated when the engine is running, the role of these two mechanical composite alternating stress. In the long-term bench test and use of the process, the bellows repeatedly cracking, isoamyl alcohol leakage, guide