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    • 3. 发明公开
    • METHOD FOR DETERMINING BOLTING TORQUE
    • EP4063819A1
    • 2022-09-28
    • EP21864651.1
    • 2021-09-01
    • LG Energy Solution, Ltd.
    • CHO, Jun BeomPARK, Heung KunKANG, Choon KwonSON, Min Su
    • G01L3/14G01L5/24G01B5/24F16B31/02
    • Disclosed is a bolting torque determination method which includes a preparation process of preparing samples of an object and samples of a bolt which are to be bolted, a sample fracture torque acquisition process of measuring and acquiring a sample fracture torque at which at least one of the samples of the object and the bolt is fractured when the samples of the object and the bolt are bolted, an effective fastening torque zone determination process of determining an effective fastening torque zone, in which fastening is performed without fracture, on the basis of the sample fracture torque, an experimental torque selection process of selecting a plurality of experimental torques within the effective fastening torque zone, a bolt fastening angle measurement process of performing test fastening on the samples according to each of the plurality of selected experimental torques and measuring bolt fastening angles, and a bolting torque determination process of determining a bolting torque, which is to be used for bolting of the object and the bolt among the plurality of experimental torques, on the basis of the plurality of measured bolt fastening angles. In the bolting fastening angle measurement process, a rotation angle of each of the sample bolts is measured from a predetermined reference point of time to a point of time when the test fastening is finished. The bolting torque determination method may accurately determine the bolting torque to enhance bolting quality.