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蒸汽锤活塞与汽缸壁之间的密封装置普遍采用铸铁活塞环。其活塞环不仅加工困难,而且在使用中对气缸壁的磨损较快。目前,对于活塞行程小、运动速度不大、锤重为0.9～3吨、汽缸直径为350～530毫米的蒸汽锤活塞环,可采用MC型(ΓOCT7338-77)中硬度耐油橡胶板制成的橡胶密封环代替。橡胶密封环安装在活塞环槽内,留有边间隙,如图a所示。活塞顶部钻
Cast iron piston rings are commonly used as seals between steam hammer pistons and cylinder walls. Its piston rings are not only difficult to machine, but also wear faster on the cylinder walls during use. At present, the piston stroke is small, the speed is not big, hammer weight of 0.9 to 3 tons, the cylinder diameter of 350 to 530 mm steam hammer piston ring can be MC type (ΓOCT7338-77) made of medium hardness oil rubber plate Rubber seal instead. Rubber seal ring installed in the piston ring groove, leaving the side clearance, as shown in Figure a. Piston top drill