Why screw off the plum blossom head of torsional shear high-strength bolt?

扭剪型高强螺栓，采用电动力矩扳手来进行安装。只有当力矩达到要求后，高强螺栓的梅花头才会被拧掉，这样可以保证所使用的螺栓达到的预紧力从而保证性能。

Torsional shear type high-strength bolts are installed by electric torque wrench. Only when the torque meets the requirements, the plum blossom head of the high-strength bolt will be screwed off, so as to ensure the pre tightening force of the bolt used and ensure the performance.

所以在工程中可以通过检查梅花头是否还在还判断高强螺栓是否起到作用，而扭剪型高强螺栓都是一次性也是因为这个原因。

Therefore, in the project, it can be judged whether the high-strength bolts play a role by checking whether the plum blossom head is still in use. This is also the reason why the torsional shear high-strength bolts are disposable.

扭剪扳手主要用于扭剪型高强度螺栓的拧紧。 其目的是中断扭剪型高强度螺栓。 工作时，将扳手的头部与螺栓的头部对齐，然后拉动开关以开始工作。 几秒钟后，拧紧螺栓头，然后拉出扳手并拉动扳机以弹出螺栓头，这意味着工作结束。

Torsional shear wrench is mainly used for tightening torsional shear high-strength bolts. The purpose is to interrupt the torsional shear type high-strength bolt. When working, align the head of the wrench with the head of the bolt, and then pull the switch to start working. After a few seconds, tighten the bolt head, then pull out the wrench and pull the trigger to eject the bolt head, which means that the work is over.

扭剪扳手主要用于紧固钢结构工程中的扭剪型高强度螺栓。 扭剪螺栓分为六个标准螺栓M16-20-22-24-27-30。扭剪扳手的应用：扭剪式高强度螺栓的初始拧紧可以使用冲击电动扳手或固定扭矩扳手，而拧紧则使用扭剪扳手，因此扭剪扳手专门用于扭剪的拧紧型高强度螺栓。

Torsional shear wrench is mainly used to fasten torsional shear high-strength bolts in steel structure engineering. Torsional shear bolts are divided into six national standard bolts m16-20-22-24-27-30. Application of torsional shear wrench: impact electric wrench or fixed torque wrench can be used for initial tightening of torsional shear high-strength bolts, while torsional shear wrench is used for tightening. Therefore, torsional shear wrench is specially used for tightening high-strength bolts.

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