螺栓连接静态力矩控制范围的确定方法

Determination Method of Static Torque Control Range of Bolted Connection

静态力矩是控制螺栓拧紧质量的有效方法,通过经验公式或统计分析可以把不便测量的动态力矩转化为可测量可复验的静态力矩。在介绍螺栓连接分类和动、静态力矩定义的基础上,给出了确定螺栓连接静态力矩控制范围的两种方法:经验公式法和统计分析法。经验公式法考虑了连接性质、测量偏差和测量误差的影响,用于初步确定静态力矩。统计分析法基于测量数据和SPC确定静态力矩,更加符合实际情况。

Static torque is an effective method to control the tightening quality of bolts.Through empirical formula or statistical analysis,the dynamic torque that is inconvenient to measure can be transformed into the static torque that can be measured and retested.On the basis of introducing the classification of bolted connections and the definition of dynamic and static torque,two methods to determine the control range of static torque of bolted connections are given:empirical formula method and statistical analysis method.The empirical formula method considers the influence of connection properties,measurement deviation and measurement error,and is used to preliminarily determine the static torque.The statistical analysis method determines the static torque based on the measured data and SPC,which is more in line with the actual situation.