bai終緊扭剪型高強(qiáng)螺栓必須用扭剪型電動(dòng)扳du手，因?yàn)榕ぜ粜透邚?qiáng)zhi螺栓的終緊必須要把它的梅花頭打dao斷，只有扭剪型電動(dòng)扳手才能。現(xiàn)在高強(qiáng)螺栓的分類分為大六角高強(qiáng)螺栓和扭剪型高強(qiáng)螺栓，每種高強(qiáng)螺栓的緊固都必須先初緊再終緊。
For the final tightening of high-strength bolts, the twist shear type electric wrench must be used, because the final tightening of the torsional shear high-strength bolt must break its plum head, only the torsional shear type electric wrench can. At present, high strength bolts are classified into large hexagon high strength bolts and torsion shear high strength bolts. Each kind of high strength bolts must be tightened initially and then finally.
高強(qiáng)螺栓的緊固都必須先初緊再終緊，扭剪型高強(qiáng)螺栓的初緊可以選擇沖擊電動(dòng)扳手、定扭矩電動(dòng)扳手或扭剪型電動(dòng)初緊扳手，并且一般達(dá)到終緊扭矩的50-60%就可以了。
High strength bolts must be tightened first and then finally. For the initial tightening of high-strength bolts, impact electric wrench, constant torque electric wrench or torsion shear type electric initial tightening wrench can be selected, and generally reach 50-60% of the final tightening torque.
特殊狀態(tài)下可以允許用扭距扳手按大六角高強(qiáng)螺栓的作業(yè)方法代替，只需達(dá)到相當(dāng)?shù)呐ぞ兀ＷC相應(yīng)軸力即可，梅花頭保留無妨。
Under special conditions, it is allowed to use torque wrench to replace the operation method of large hexagon high strength bolt. It only needs to reach a certain torque and ensure the corresponding axial force, and the plum head can be retained.
