我国第二汽车厂从西德引进的机械压力机中,重要零、部件的联接采用了胀套联接。为满足引进设备中胀套备件的需要,第二重机厂对这项技术进行了研制。试制产品通过静、动载荷,以及工艺性等一系列试验表明,其性能已基本达到国外同类产品的水平。本文简要介绍胀套的工作原理、特点,以及在一些锻压设备中应用的实例。 China’s second automobile plant imported from West Germany mechanical presses, the important zero, the parts used in connection expansion joints. To meet the needs of the introduction of equipment expansion kit, the second machine factory on the development of this technology. Trial products through static and dynamic load, as well as technology and a series of tests show that its performance has basically reached the level of similar foreign products. This article gives a brief introduction to the working principle and features of expansion sets, as well as some examples of application in some forging equipment.