论文部分内容阅读
我厂750kg空气锤经多次大修,气缸孔已鏜大了3～5mm,在某次大修中,发现前后缸磨损严重,椭圆度达0.15mm,锥度0.20mm,缸壁上有严重划伤深痕多条、其中有几条深0.8、宽30～40、长约500mm左右,失去了设备原有精度。如果大修再镗大,不仅改变了设备的设计参数和技术性能,而且每次大修造成工作锤杆、压缩活塞杆、涨圈、下锤套报废换新,这样的修法使大修周期延长、成本高,原有的备件无法使用。为解决气锤修理中此问题,我厂采用了镶套修复法,简单介绍如下。一、选定缸体壁厚和缸套厚度空气锤的锤杆在工作中受强力冲击,750kg空气
750kg air hammer in our factory has been overhauled several times, the cylinder bore has been boring large 3 ~ 5mm, in a major overhaul, found before and after the cylinder wear and tear, ovality of 0.15mm, taper 0.20mm, the cylinder wall has a serious scratch Several marks, of which several deep 0.8, width 30 ~ 40, about 500mm, lost the original precision equipment. If the overhaul and then re-boring large, not only changed the design parameters of the equipment and technical performance, and each overhaul caused by the work hammer, compression piston rod, up ring, under the hammer cover scrapped, such repair method to extend the overhaul cycle, high cost , The original spare parts can not be used. In order to solve this problem in hammer repair, our factory uses the set of repair method, a brief introduction is as follows. First, the selected cylinder wall thickness and thickness of the air hammer hammer hammer at work by the strong impact, 750kg air