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金属U形波纹管膨胀节作为吸收热膨胀和机械振动的挠性元件,具有制造容易,抗压性能好、补偿量大的特点,已厂泛应用于石油化工、电力、船舶、原子能、宇航等工业部门。目前随着我国压力容器科研、设计和制造水平的提高,膨胀节行业呈现出两大特点,一是膨胀节制造厂家日趋增多,二是进行产品创优。如何提高波纹管挠性元件的质量,这里面还有很多工作需要探索和研究。 JB1121-83《波形膨胀节》标准对膨胀节的焊缝返修次数、波的形状和伤痕等都作了具体规定。由于焊接、制造和其它原因,致使膨
As a flexible element that absorbs thermal expansion and mechanical vibration, metal U-shaped bellows expansion joint has the features of easy manufacture, good compression resistance and large compensation. It has been widely used in petrochemical, power, marine, atomic energy, aerospace and other industries department. At present, with the improvement of the research, design and manufacture of pressure vessels in China, there are two major characteristics in the expansion joint industry. One is the increasing number of expansion joint manufacturers and the other is in product excellence. How to improve the quality of flexible bellows components, there is still much work to explore and research. JB1121-83 “wave expansion joint” standard expansion joints on the number of weld repairs, wave shape and injuries have made specific provisions. Due to welding, manufacturing and other reasons, resulting in swelling