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Yangzhou Huayu Pipe Fitting Co.,Ltd. is a professional manufacturer of pipe fittings. It mainly manufactures steel pipe fittings, flanges and modular prefabrication with an annual capacity of more than 40,000 tons.
Yangzhou Huayu Pipe Fitting Co.,Ltd. is a professional manufacturer of pipe fittings. It mainly manufactures steel pipe fittings, flanges and modular prefabrication with an annual capacity of more than 40,000 tons.
Yangzhou Huayu Pipe Fitting Co.,Ltd. is a professional manufacturer of pipe fittings. It mainly manufactures steel pipe fittings, flanges and modular prefabrication with an annual capacity of more than 40,000 tons.
影响法兰密封的因素是多方面的。主要有：螺栓预紧力；密封面型式；垫片性能；法兰刚度；操作条件。
螺栓预紧力
螺栓预紧力是影响密封的一个重要因素。预紧力必须使垫片压紧并实现初始密封条件。同时，预紧力也不能过大，否则将会使垫片被压坏或挤出。
由于预紧力是通过法兰密封面传递给垫片的，要达到良好的密封，必须使预紧力均匀地作用于垫片。因此，当密封所需要的预紧力一定时，采取增加螺栓个数、减小螺栓直径的办法对密封是有利的。
密封面
法兰联接的密封性能与密封面型式有直接关系，所以要合理选择密封面的形状。法兰密封面型式的选择，主要考虑压力、温度、介质。
垫片是构成密封的重要元件，适当的垫片变形和回弹能力是形成密封的必要条件。
常用的垫片可分为非金属、金属、非金属与金属混合制的垫片。
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