In this paper the author describes a way of determining the residual pre - tightening force after adding elastic elements to the connecting bolt at the flange on ball mill ' s shell and therefore a formula is induced 阐迷了球磨机筒体法兰联接螺栓增加弹性元件后其剩余预紧力的确定方法，并导出了相应的计算公式。
Ordinary bolt connecting bolts as a permanent use , when the design requirements or questions about its quality should be carried out when the smallest lag bolts kind complex load testing and the results were consistent with national standard 《 mechanical fasteners , bolts , screws and stud 》 ( gb3098 ) 普通螺栓作为永久性连接螺栓使用时，当设计有要求或对其质量有疑义时，应进行螺栓实物最小拉力载荷复验，其结果符合国家标准《坚固件机械性能、螺栓、螺钉和螺柱》 （ gb3098 ）的规定。
