本文推荐一个测量范围,使盲孔法测量焊接球罐残余应力时,残余应力释放系数可以直接地从理论计算,不必进行实验标定。附加的机械应变、打磨应变及局部的塑性应变可以从实测值中分离出,并利用相关曲线加以扣除,使测量方法简化,精度上符合工程实践要求,残余应力的分布较好地与真实情况吻合。 In this paper, we recommend a measuring range, so that when measuring the residual stress of the welded spherical tank by the blind hole method, the residual stress release coefficient can be directly calculated from the theory without the need of experimental calibration. Additional mechanical strain, sanding strain and local plastic strain can be separated from the measured values ​​and deducted by using the correlation curve, which simplifies the measurement method and meets the engineering practice requirements in terms of accuracy. The distribution of residual stress is in good agreement with the actual situation .