Torsional shear type high-strength bolts must be installed with an 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 that the bolt used reaches the necessary preload, so as to ensure the performance. Therefore, in the project, we can judge whether the high-strength bolts play a role by checking whether the plum blossom head is still in use, and it is also for this reason that the torsional shear high-strength bolts are disposable

1、初拧扳手，可用77779193永利首页网址也可用手动带响扳手。但无论用哪种扳手施工前都必须进行标定，以便控制初拧扭距值。手动扳手作为终拧工具时，必须每班进行标定，并做好标定记录。

1. The initial tightening wrench can be an electric wrench or a manual ring wrench. However, no matter which wrench is used, it must be calibrated before construction in order to control the initial torque value. When the manual wrench is used as the final tightening tool, it must be calibrated every shift and the calibration record must be made.

2、终柠板手：扭剪型高强螺栓是一种自标量型螺栓，因此终拧只须把高强螺栓尾部螺栓头拧掉即可，扳手不用标定。

2. Final lemon wrench: the torsion shear high-strength bolt is a self scalar bolt, so the final tightening only needs to screw off the bolt head at the tail of the high-strength bolt, and the wrench does not need to be calibrated.

3、终拧紧固时应注意，待梅花头全部套入套筒后，才能按下77779193永利首页网址开关，若内套筒只套入梅花头尺寸的1/3～1/2长度时按下77779193永利首页网址开关，将会造成梅花头打滑，并且影响套筒的使用寿命。

3. During final tightening, it should be noted that the electric wrench switch can only be pressed after all the ring heads are sleeved into the sleeve. If the inner sleeve is sleeved into only 1 / 3 ~ 1 / 2 of the length of the ring head, pressing the electric wrench switch will cause the ring head to slip and affect the service life of the sleeve.

4、紧固时，终拧77779193永利首页网址应和构件摩擦面保持垂直，扳手倾斜是很容易导致螺栓尾部梅花头打滑，并易卡壳。

4. When tightening, the final tightening electric wrench shall be perpendicular to the friction surface of the component. The inclination of the wrench is easy to cause the plum blossom head at the tail of the bolt to slip and jam.

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The above is the relevant content introduced by the torsion shear wrench manufacturer. I hope it can help you. For more wonderful content, you can call directly for consultation!